1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/editor/libeditor/base/nsEditor.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,5257 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "mozilla/DebugOnly.h" // for DebugOnly
1.10 +
1.11 +#include <stdio.h> // for nullptr, stdout
1.12 +#include <string.h> // for strcmp
1.13 +
1.14 +#include "ChangeAttributeTxn.h" // for ChangeAttributeTxn
1.15 +#include "CreateElementTxn.h" // for CreateElementTxn
1.16 +#include "DeleteNodeTxn.h" // for DeleteNodeTxn
1.17 +#include "DeleteRangeTxn.h" // for DeleteRangeTxn
1.18 +#include "DeleteTextTxn.h" // for DeleteTextTxn
1.19 +#include "EditAggregateTxn.h" // for EditAggregateTxn
1.20 +#include "EditTxn.h" // for EditTxn
1.21 +#include "IMETextTxn.h" // for IMETextTxn
1.22 +#include "InsertElementTxn.h" // for InsertElementTxn
1.23 +#include "InsertTextTxn.h" // for InsertTextTxn
1.24 +#include "JoinElementTxn.h" // for JoinElementTxn
1.25 +#include "PlaceholderTxn.h" // for PlaceholderTxn
1.26 +#include "SplitElementTxn.h" // for SplitElementTxn
1.27 +#include "mozFlushType.h" // for mozFlushType::Flush_Frames
1.28 +#include "mozISpellCheckingEngine.h"
1.29 +#include "mozInlineSpellChecker.h" // for mozInlineSpellChecker
1.30 +#include "mozilla/IMEStateManager.h" // for IMEStateManager
1.31 +#include "mozilla/Preferences.h" // for Preferences
1.32 +#include "mozilla/dom/Selection.h" // for Selection, etc
1.33 +#include "mozilla/Services.h" // for GetObserverService
1.34 +#include "mozilla/TextComposition.h" // for TextComposition
1.35 +#include "mozilla/TextEvents.h"
1.36 +#include "mozilla/dom/Element.h" // for Element, nsINode::AsElement
1.37 +#include "mozilla/mozalloc.h" // for operator new, etc
1.38 +#include "nsAString.h" // for nsAString_internal::Length, etc
1.39 +#include "nsCCUncollectableMarker.h" // for nsCCUncollectableMarker
1.40 +#include "nsCaret.h" // for nsCaret
1.41 +#include "nsCaseTreatment.h"
1.42 +#include "nsCharTraits.h" // for NS_IS_HIGH_SURROGATE, etc
1.43 +#include "nsComponentManagerUtils.h" // for do_CreateInstance
1.44 +#include "nsComputedDOMStyle.h" // for nsComputedDOMStyle
1.45 +#include "nsContentUtils.h" // for nsContentUtils
1.46 +#include "nsDOMString.h" // for DOMStringIsNull
1.47 +#include "nsDebug.h" // for NS_ENSURE_TRUE, etc
1.48 +#include "nsEditProperty.h" // for nsEditProperty, etc
1.49 +#include "nsEditor.h"
1.50 +#include "nsEditorEventListener.h" // for nsEditorEventListener
1.51 +#include "nsEditorUtils.h" // for nsAutoRules, etc
1.52 +#include "nsError.h" // for NS_OK, etc
1.53 +#include "nsFocusManager.h" // for nsFocusManager
1.54 +#include "nsFrameSelection.h" // for nsFrameSelection
1.55 +#include "nsGkAtoms.h" // for nsGkAtoms, nsGkAtoms::dir
1.56 +#include "nsIAbsorbingTransaction.h" // for nsIAbsorbingTransaction
1.57 +#include "nsIAtom.h" // for nsIAtom
1.58 +#include "nsIContent.h" // for nsIContent
1.59 +#include "nsIDOMAttr.h" // for nsIDOMAttr
1.60 +#include "nsIDOMCharacterData.h" // for nsIDOMCharacterData
1.61 +#include "nsIDOMDocument.h" // for nsIDOMDocument
1.62 +#include "nsIDOMElement.h" // for nsIDOMElement
1.63 +#include "nsIDOMEvent.h" // for nsIDOMEvent
1.64 +#include "nsIDOMEventListener.h" // for nsIDOMEventListener
1.65 +#include "nsIDOMEventTarget.h" // for nsIDOMEventTarget
1.66 +#include "nsIDOMHTMLElement.h" // for nsIDOMHTMLElement
1.67 +#include "nsIDOMKeyEvent.h" // for nsIDOMKeyEvent, etc
1.68 +#include "nsIDOMMozNamedAttrMap.h" // for nsIDOMMozNamedAttrMap
1.69 +#include "nsIDOMMouseEvent.h" // for nsIDOMMouseEvent
1.70 +#include "nsIDOMNode.h" // for nsIDOMNode, etc
1.71 +#include "nsIDOMNodeList.h" // for nsIDOMNodeList
1.72 +#include "nsIDOMRange.h" // for nsIDOMRange
1.73 +#include "nsIDOMText.h" // for nsIDOMText
1.74 +#include "nsIDocument.h" // for nsIDocument
1.75 +#include "nsIDocumentStateListener.h" // for nsIDocumentStateListener
1.76 +#include "nsIEditActionListener.h" // for nsIEditActionListener
1.77 +#include "nsIEditorObserver.h" // for nsIEditorObserver
1.78 +#include "nsIEditorSpellCheck.h" // for nsIEditorSpellCheck
1.79 +#include "nsIFrame.h" // for nsIFrame
1.80 +#include "nsIHTMLDocument.h" // for nsIHTMLDocument
1.81 +#include "nsIInlineSpellChecker.h" // for nsIInlineSpellChecker, etc
1.82 +#include "nsNameSpaceManager.h" // for kNameSpaceID_None, etc
1.83 +#include "nsINode.h" // for nsINode, etc
1.84 +#include "nsIObserverService.h" // for nsIObserverService
1.85 +#include "nsIPlaintextEditor.h" // for nsIPlaintextEditor, etc
1.86 +#include "nsIPresShell.h" // for nsIPresShell
1.87 +#include "nsISelection.h" // for nsISelection, etc
1.88 +#include "nsISelectionController.h" // for nsISelectionController, etc
1.89 +#include "nsISelectionDisplay.h" // for nsISelectionDisplay, etc
1.90 +#include "nsISelectionPrivate.h" // for nsISelectionPrivate, etc
1.91 +#include "nsISupportsBase.h" // for nsISupports
1.92 +#include "nsISupportsUtils.h" // for NS_ADDREF, NS_IF_ADDREF
1.93 +#include "nsITransaction.h" // for nsITransaction
1.94 +#include "nsITransactionManager.h"
1.95 +#include "nsIWeakReference.h" // for nsISupportsWeakReference
1.96 +#include "nsIWidget.h" // for nsIWidget, IMEState, etc
1.97 +#include "nsPIDOMWindow.h" // for nsPIDOMWindow
1.98 +#include "nsPresContext.h" // for nsPresContext
1.99 +#include "nsRange.h" // for nsRange
1.100 +#include "nsReadableUtils.h" // for EmptyString, ToNewCString
1.101 +#include "nsString.h" // for nsAutoString, nsString, etc
1.102 +#include "nsStringFwd.h" // for nsAFlatString
1.103 +#include "nsStyleConsts.h" // for NS_STYLE_DIRECTION_RTL, etc
1.104 +#include "nsStyleContext.h" // for nsStyleContext
1.105 +#include "nsStyleSheetTxns.h" // for AddStyleSheetTxn, etc
1.106 +#include "nsStyleStruct.h" // for nsStyleDisplay, nsStyleText, etc
1.107 +#include "nsStyleStructFwd.h" // for nsIFrame::StyleUIReset, etc
1.108 +#include "nsTextEditUtils.h" // for nsTextEditUtils
1.109 +#include "nsTextNode.h" // for nsTextNode
1.110 +#include "nsThreadUtils.h" // for nsRunnable
1.111 +#include "nsTransactionManager.h" // for nsTransactionManager
1.112 +#include "prtime.h" // for PR_Now
1.113 +
1.114 +class nsIOutputStream;
1.115 +class nsIParserService;
1.116 +class nsITransferable;
1.117 +
1.118 +#ifdef DEBUG
1.119 +#include "nsIDOMHTMLDocument.h" // for nsIDOMHTMLDocument
1.120 +#endif
1.121 +
1.122 +using namespace mozilla;
1.123 +using namespace mozilla::dom;
1.124 +using namespace mozilla::widget;
1.125 +
1.126 +// Defined in nsEditorRegistration.cpp
1.127 +extern nsIParserService *sParserService;
1.128 +
1.129 +//---------------------------------------------------------------------------
1.130 +//
1.131 +// nsEditor: base editor class implementation
1.132 +//
1.133 +//---------------------------------------------------------------------------
1.134 +
1.135 +nsEditor::nsEditor()
1.136 +: mPlaceHolderName(nullptr)
1.137 +, mSelState(nullptr)
1.138 +, mPhonetic(nullptr)
1.139 +, mModCount(0)
1.140 +, mFlags(0)
1.141 +, mUpdateCount(0)
1.142 +, mPlaceHolderBatch(0)
1.143 +, mAction(EditAction::none)
1.144 +, mIMETextOffset(0)
1.145 +, mDirection(eNone)
1.146 +, mDocDirtyState(-1)
1.147 +, mSpellcheckCheckboxState(eTriUnset)
1.148 +, mShouldTxnSetSelection(true)
1.149 +, mDidPreDestroy(false)
1.150 +, mDidPostCreate(false)
1.151 +, mDispatchInputEvent(true)
1.152 +{
1.153 +}
1.154 +
1.155 +nsEditor::~nsEditor()
1.156 +{
1.157 + NS_ASSERTION(!mDocWeak || mDidPreDestroy, "Why PreDestroy hasn't been called?");
1.158 +
1.159 + mTxnMgr = nullptr;
1.160 +
1.161 + delete mPhonetic;
1.162 +}
1.163 +
1.164 +NS_IMPL_CYCLE_COLLECTION_CLASS(nsEditor)
1.165 +
1.166 +NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsEditor)
1.167 + NS_IMPL_CYCLE_COLLECTION_UNLINK(mRootElement)
1.168 + NS_IMPL_CYCLE_COLLECTION_UNLINK(mInlineSpellChecker)
1.169 + NS_IMPL_CYCLE_COLLECTION_UNLINK(mTxnMgr)
1.170 + NS_IMPL_CYCLE_COLLECTION_UNLINK(mIMETextNode)
1.171 + NS_IMPL_CYCLE_COLLECTION_UNLINK(mActionListeners)
1.172 + NS_IMPL_CYCLE_COLLECTION_UNLINK(mEditorObservers)
1.173 + NS_IMPL_CYCLE_COLLECTION_UNLINK(mDocStateListeners)
1.174 + NS_IMPL_CYCLE_COLLECTION_UNLINK(mEventTarget)
1.175 + NS_IMPL_CYCLE_COLLECTION_UNLINK(mEventListener)
1.176 +NS_IMPL_CYCLE_COLLECTION_UNLINK_END
1.177 +
1.178 +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsEditor)
1.179 + nsIDocument* currentDoc =
1.180 + tmp->mRootElement ? tmp->mRootElement->GetCurrentDoc() : nullptr;
1.181 + if (currentDoc &&
1.182 + nsCCUncollectableMarker::InGeneration(cb, currentDoc->GetMarkedCCGeneration())) {
1.183 + return NS_SUCCESS_INTERRUPTED_TRAVERSE;
1.184 + }
1.185 + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mRootElement)
1.186 + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mInlineSpellChecker)
1.187 + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mTxnMgr)
1.188 + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mIMETextNode)
1.189 + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mActionListeners)
1.190 + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mEditorObservers)
1.191 + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDocStateListeners)
1.192 + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mEventTarget)
1.193 + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mEventListener)
1.194 +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
1.195 +
1.196 +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsEditor)
1.197 + NS_INTERFACE_MAP_ENTRY(nsIPhonetic)
1.198 + NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
1.199 + NS_INTERFACE_MAP_ENTRY(nsIEditorIMESupport)
1.200 + NS_INTERFACE_MAP_ENTRY(nsIEditor)
1.201 + NS_INTERFACE_MAP_ENTRY(nsIObserver)
1.202 + NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIEditor)
1.203 +NS_INTERFACE_MAP_END
1.204 +
1.205 +NS_IMPL_CYCLE_COLLECTING_ADDREF(nsEditor)
1.206 +NS_IMPL_CYCLE_COLLECTING_RELEASE(nsEditor)
1.207 +
1.208 +
1.209 +NS_IMETHODIMP
1.210 +nsEditor::Init(nsIDOMDocument *aDoc, nsIContent *aRoot,
1.211 + nsISelectionController *aSelCon, uint32_t aFlags,
1.212 + const nsAString& aValue)
1.213 +{
1.214 + NS_PRECONDITION(aDoc, "bad arg");
1.215 + if (!aDoc)
1.216 + return NS_ERROR_NULL_POINTER;
1.217 +
1.218 + // First only set flags, but other stuff shouldn't be initialized now.
1.219 + // Don't move this call after initializing mDocWeak.
1.220 + // SetFlags() can check whether it's called during initialization or not by
1.221 + // them. Note that SetFlags() will be called by PostCreate().
1.222 +#ifdef DEBUG
1.223 + nsresult rv =
1.224 +#endif
1.225 + SetFlags(aFlags);
1.226 + NS_ASSERTION(NS_SUCCEEDED(rv), "SetFlags() failed");
1.227 +
1.228 + mDocWeak = do_GetWeakReference(aDoc); // weak reference to doc
1.229 + // HTML editors currently don't have their own selection controller,
1.230 + // so they'll pass null as aSelCon, and we'll get the selection controller
1.231 + // off of the presshell.
1.232 + nsCOMPtr<nsISelectionController> selCon;
1.233 + if (aSelCon) {
1.234 + mSelConWeak = do_GetWeakReference(aSelCon); // weak reference to selectioncontroller
1.235 + selCon = aSelCon;
1.236 + } else {
1.237 + nsCOMPtr<nsIPresShell> presShell = GetPresShell();
1.238 + selCon = do_QueryInterface(presShell);
1.239 + }
1.240 + NS_ASSERTION(selCon, "Selection controller should be available at this point");
1.241 +
1.242 + //set up root element if we are passed one.
1.243 + if (aRoot)
1.244 + mRootElement = do_QueryInterface(aRoot);
1.245 +
1.246 + mUpdateCount=0;
1.247 +
1.248 + /* initialize IME stuff */
1.249 + mIMETextNode = nullptr;
1.250 + mIMETextOffset = 0;
1.251 + /* Show the caret */
1.252 + selCon->SetCaretReadOnly(false);
1.253 + selCon->SetDisplaySelection(nsISelectionController::SELECTION_ON);
1.254 +
1.255 + selCon->SetSelectionFlags(nsISelectionDisplay::DISPLAY_ALL);//we want to see all the selection reflected to user
1.256 +
1.257 + NS_POSTCONDITION(mDocWeak, "bad state");
1.258 +
1.259 + // Make sure that the editor will be destroyed properly
1.260 + mDidPreDestroy = false;
1.261 + // Make sure that the ediotr will be created properly
1.262 + mDidPostCreate = false;
1.263 +
1.264 + return NS_OK;
1.265 +}
1.266 +
1.267 +
1.268 +NS_IMETHODIMP
1.269 +nsEditor::PostCreate()
1.270 +{
1.271 + // Synchronize some stuff for the flags. SetFlags() will initialize
1.272 + // something by the flag difference. This is first time of that, so, all
1.273 + // initializations must be run. For such reason, we need to invert mFlags
1.274 + // value first.
1.275 + mFlags = ~mFlags;
1.276 + nsresult rv = SetFlags(~mFlags);
1.277 + NS_ENSURE_SUCCESS(rv, rv);
1.278 +
1.279 + // These operations only need to happen on the first PostCreate call
1.280 + if (!mDidPostCreate) {
1.281 + mDidPostCreate = true;
1.282 +
1.283 + // Set up listeners
1.284 + CreateEventListeners();
1.285 + rv = InstallEventListeners();
1.286 + NS_ENSURE_SUCCESS(rv, rv);
1.287 +
1.288 + // nuke the modification count, so the doc appears unmodified
1.289 + // do this before we notify listeners
1.290 + ResetModificationCount();
1.291 +
1.292 + // update the UI with our state
1.293 + NotifyDocumentListeners(eDocumentCreated);
1.294 + NotifyDocumentListeners(eDocumentStateChanged);
1.295 +
1.296 + nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
1.297 + if (obs) {
1.298 + obs->AddObserver(this,
1.299 + SPELLCHECK_DICTIONARY_UPDATE_NOTIFICATION,
1.300 + false);
1.301 + }
1.302 + }
1.303 +
1.304 + // update nsTextStateManager and caret if we have focus
1.305 + nsCOMPtr<nsIContent> focusedContent = GetFocusedContent();
1.306 + if (focusedContent) {
1.307 + nsCOMPtr<nsIDOMEventTarget> target = do_QueryInterface(focusedContent);
1.308 + if (target) {
1.309 + InitializeSelection(target);
1.310 + }
1.311 +
1.312 + // If the text control gets reframed during focus, Focus() would not be
1.313 + // called, so take a chance here to see if we need to spell check the text
1.314 + // control.
1.315 + nsEditorEventListener* listener =
1.316 + reinterpret_cast<nsEditorEventListener*> (mEventListener.get());
1.317 + listener->SpellCheckIfNeeded();
1.318 +
1.319 + IMEState newState;
1.320 + rv = GetPreferredIMEState(&newState);
1.321 + NS_ENSURE_SUCCESS(rv, NS_OK);
1.322 + nsCOMPtr<nsIContent> content = GetFocusedContentForIME();
1.323 + IMEStateManager::UpdateIMEState(newState, content);
1.324 + }
1.325 + return NS_OK;
1.326 +}
1.327 +
1.328 +/* virtual */
1.329 +void
1.330 +nsEditor::CreateEventListeners()
1.331 +{
1.332 + // Don't create the handler twice
1.333 + if (!mEventListener) {
1.334 + mEventListener = new nsEditorEventListener();
1.335 + }
1.336 +}
1.337 +
1.338 +nsresult
1.339 +nsEditor::InstallEventListeners()
1.340 +{
1.341 + NS_ENSURE_TRUE(mDocWeak && mEventListener,
1.342 + NS_ERROR_NOT_INITIALIZED);
1.343 +
1.344 + // Initialize the event target.
1.345 + nsCOMPtr<nsIContent> rootContent = GetRoot();
1.346 + NS_ENSURE_TRUE(rootContent, NS_ERROR_NOT_AVAILABLE);
1.347 + mEventTarget = do_QueryInterface(rootContent->GetParent());
1.348 + NS_ENSURE_TRUE(mEventTarget, NS_ERROR_NOT_AVAILABLE);
1.349 +
1.350 + nsEditorEventListener* listener =
1.351 + reinterpret_cast<nsEditorEventListener*>(mEventListener.get());
1.352 + return listener->Connect(this);
1.353 +}
1.354 +
1.355 +void
1.356 +nsEditor::RemoveEventListeners()
1.357 +{
1.358 + if (!mDocWeak || !mEventListener) {
1.359 + return;
1.360 + }
1.361 + reinterpret_cast<nsEditorEventListener*>(mEventListener.get())->Disconnect();
1.362 + if (mComposition) {
1.363 + mComposition->EndHandlingComposition(this);
1.364 + mComposition = nullptr;
1.365 + }
1.366 + mEventTarget = nullptr;
1.367 +}
1.368 +
1.369 +bool
1.370 +nsEditor::GetDesiredSpellCheckState()
1.371 +{
1.372 + // Check user override on this element
1.373 + if (mSpellcheckCheckboxState != eTriUnset) {
1.374 + return (mSpellcheckCheckboxState == eTriTrue);
1.375 + }
1.376 +
1.377 + // Check user preferences
1.378 + int32_t spellcheckLevel = Preferences::GetInt("layout.spellcheckDefault", 1);
1.379 +
1.380 + if (spellcheckLevel == 0) {
1.381 + return false; // Spellchecking forced off globally
1.382 + }
1.383 +
1.384 + if (!CanEnableSpellCheck()) {
1.385 + return false;
1.386 + }
1.387 +
1.388 + nsCOMPtr<nsIPresShell> presShell = GetPresShell();
1.389 + if (presShell) {
1.390 + nsPresContext* context = presShell->GetPresContext();
1.391 + if (context && !context->IsDynamic()) {
1.392 + return false;
1.393 + }
1.394 + }
1.395 +
1.396 + // Check DOM state
1.397 + nsCOMPtr<nsIContent> content = GetExposedRoot();
1.398 + if (!content) {
1.399 + return false;
1.400 + }
1.401 +
1.402 + nsCOMPtr<nsIDOMHTMLElement> element = do_QueryInterface(content);
1.403 + if (!element) {
1.404 + return false;
1.405 + }
1.406 +
1.407 + if (!IsPlaintextEditor()) {
1.408 + // Some of the page content might be editable and some not, if spellcheck=
1.409 + // is explicitly set anywhere, so if there's anything editable on the page,
1.410 + // return true and let the spellchecker figure it out.
1.411 + nsCOMPtr<nsIHTMLDocument> doc = do_QueryInterface(content->GetCurrentDoc());
1.412 + return doc && doc->IsEditingOn();
1.413 + }
1.414 +
1.415 + bool enable;
1.416 + element->GetSpellcheck(&enable);
1.417 +
1.418 + return enable;
1.419 +}
1.420 +
1.421 +NS_IMETHODIMP
1.422 +nsEditor::PreDestroy(bool aDestroyingFrames)
1.423 +{
1.424 + if (mDidPreDestroy)
1.425 + return NS_OK;
1.426 +
1.427 + nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
1.428 + if (obs) {
1.429 + obs->RemoveObserver(this,
1.430 + SPELLCHECK_DICTIONARY_UPDATE_NOTIFICATION);
1.431 + }
1.432 +
1.433 + // Let spellchecker clean up its observers etc. It is important not to
1.434 + // actually free the spellchecker here, since the spellchecker could have
1.435 + // caused flush notifications, which could have gotten here if a textbox
1.436 + // is being removed. Setting the spellchecker to nullptr could free the
1.437 + // object that is still in use! It will be freed when the editor is
1.438 + // destroyed.
1.439 + if (mInlineSpellChecker)
1.440 + mInlineSpellChecker->Cleanup(aDestroyingFrames);
1.441 +
1.442 + // tell our listeners that the doc is going away
1.443 + NotifyDocumentListeners(eDocumentToBeDestroyed);
1.444 +
1.445 + // Unregister event listeners
1.446 + RemoveEventListeners();
1.447 + mActionListeners.Clear();
1.448 + mEditorObservers.Clear();
1.449 + mDocStateListeners.Clear();
1.450 + mInlineSpellChecker = nullptr;
1.451 + mSpellcheckCheckboxState = eTriUnset;
1.452 + mRootElement = nullptr;
1.453 +
1.454 + mDidPreDestroy = true;
1.455 + return NS_OK;
1.456 +}
1.457 +
1.458 +NS_IMETHODIMP
1.459 +nsEditor::GetFlags(uint32_t *aFlags)
1.460 +{
1.461 + *aFlags = mFlags;
1.462 + return NS_OK;
1.463 +}
1.464 +
1.465 +NS_IMETHODIMP
1.466 +nsEditor::SetFlags(uint32_t aFlags)
1.467 +{
1.468 + if (mFlags == aFlags) {
1.469 + return NS_OK;
1.470 + }
1.471 +
1.472 + bool spellcheckerWasEnabled = CanEnableSpellCheck();
1.473 + mFlags = aFlags;
1.474 +
1.475 + if (!mDocWeak) {
1.476 + // If we're initializing, we shouldn't do anything now.
1.477 + // SetFlags() will be called by PostCreate(),
1.478 + // we should synchronize some stuff for the flags at that time.
1.479 + return NS_OK;
1.480 + }
1.481 +
1.482 + // The flag change may cause the spellchecker state change
1.483 + if (CanEnableSpellCheck() != spellcheckerWasEnabled) {
1.484 + nsresult rv = SyncRealTimeSpell();
1.485 + NS_ENSURE_SUCCESS(rv, rv);
1.486 + }
1.487 +
1.488 + // If this is called from PostCreate(), it will update the IME state if it's
1.489 + // necessary.
1.490 + if (!mDidPostCreate) {
1.491 + return NS_OK;
1.492 + }
1.493 +
1.494 + // Might be changing editable state, so, we need to reset current IME state
1.495 + // if we're focused and the flag change causes IME state change.
1.496 + nsCOMPtr<nsIContent> focusedContent = GetFocusedContent();
1.497 + if (focusedContent) {
1.498 + IMEState newState;
1.499 + nsresult rv = GetPreferredIMEState(&newState);
1.500 + if (NS_SUCCEEDED(rv)) {
1.501 + // NOTE: When the enabled state isn't going to be modified, this method
1.502 + // is going to do nothing.
1.503 + nsCOMPtr<nsIContent> content = GetFocusedContentForIME();
1.504 + IMEStateManager::UpdateIMEState(newState, content);
1.505 + }
1.506 + }
1.507 +
1.508 + return NS_OK;
1.509 +}
1.510 +
1.511 +NS_IMETHODIMP
1.512 +nsEditor::GetIsSelectionEditable(bool *aIsSelectionEditable)
1.513 +{
1.514 + NS_ENSURE_ARG_POINTER(aIsSelectionEditable);
1.515 +
1.516 + // get current selection
1.517 + nsCOMPtr<nsISelection> selection;
1.518 + nsresult res = GetSelection(getter_AddRefs(selection));
1.519 + NS_ENSURE_SUCCESS(res, res);
1.520 + NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
1.521 +
1.522 + // XXX we just check that the anchor node is editable at the moment
1.523 + // we should check that all nodes in the selection are editable
1.524 + nsCOMPtr<nsIDOMNode> anchorNode;
1.525 + selection->GetAnchorNode(getter_AddRefs(anchorNode));
1.526 + *aIsSelectionEditable = anchorNode && IsEditable(anchorNode);
1.527 +
1.528 + return NS_OK;
1.529 +}
1.530 +
1.531 +NS_IMETHODIMP
1.532 +nsEditor::GetIsDocumentEditable(bool *aIsDocumentEditable)
1.533 +{
1.534 + NS_ENSURE_ARG_POINTER(aIsDocumentEditable);
1.535 + nsCOMPtr<nsIDOMDocument> doc = GetDOMDocument();
1.536 + *aIsDocumentEditable = !!doc;
1.537 +
1.538 + return NS_OK;
1.539 +}
1.540 +
1.541 +already_AddRefed<nsIDocument>
1.542 +nsEditor::GetDocument()
1.543 +{
1.544 + NS_PRECONDITION(mDocWeak, "bad state, mDocWeak weak pointer not initialized");
1.545 + nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak);
1.546 + return doc.forget();
1.547 +}
1.548 +
1.549 +already_AddRefed<nsIDOMDocument>
1.550 +nsEditor::GetDOMDocument()
1.551 +{
1.552 + NS_PRECONDITION(mDocWeak, "bad state, mDocWeak weak pointer not initialized");
1.553 + nsCOMPtr<nsIDOMDocument> doc = do_QueryReferent(mDocWeak);
1.554 + return doc.forget();
1.555 +}
1.556 +
1.557 +NS_IMETHODIMP
1.558 +nsEditor::GetDocument(nsIDOMDocument **aDoc)
1.559 +{
1.560 + nsCOMPtr<nsIDOMDocument> doc = GetDOMDocument();
1.561 + doc.forget(aDoc);
1.562 + return *aDoc ? NS_OK : NS_ERROR_NOT_INITIALIZED;
1.563 +}
1.564 +
1.565 +already_AddRefed<nsIPresShell>
1.566 +nsEditor::GetPresShell()
1.567 +{
1.568 + NS_PRECONDITION(mDocWeak, "bad state, null mDocWeak");
1.569 + nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak);
1.570 + NS_ENSURE_TRUE(doc, nullptr);
1.571 + nsCOMPtr<nsIPresShell> ps = doc->GetShell();
1.572 + return ps.forget();
1.573 +}
1.574 +
1.575 +already_AddRefed<nsIWidget>
1.576 +nsEditor::GetWidget()
1.577 +{
1.578 + nsCOMPtr<nsIPresShell> ps = GetPresShell();
1.579 + NS_ENSURE_TRUE(ps, nullptr);
1.580 + nsPresContext* pc = ps->GetPresContext();
1.581 + NS_ENSURE_TRUE(pc, nullptr);
1.582 + nsCOMPtr<nsIWidget> widget = pc->GetRootWidget();
1.583 + NS_ENSURE_TRUE(widget.get(), nullptr);
1.584 + return widget.forget();
1.585 +}
1.586 +
1.587 +/* attribute string contentsMIMEType; */
1.588 +NS_IMETHODIMP
1.589 +nsEditor::GetContentsMIMEType(char * *aContentsMIMEType)
1.590 +{
1.591 + NS_ENSURE_ARG_POINTER(aContentsMIMEType);
1.592 + *aContentsMIMEType = ToNewCString(mContentMIMEType);
1.593 + return NS_OK;
1.594 +}
1.595 +
1.596 +NS_IMETHODIMP
1.597 +nsEditor::SetContentsMIMEType(const char * aContentsMIMEType)
1.598 +{
1.599 + mContentMIMEType.Assign(aContentsMIMEType ? aContentsMIMEType : "");
1.600 + return NS_OK;
1.601 +}
1.602 +
1.603 +NS_IMETHODIMP
1.604 +nsEditor::GetSelectionController(nsISelectionController **aSel)
1.605 +{
1.606 + NS_ENSURE_TRUE(aSel, NS_ERROR_NULL_POINTER);
1.607 + *aSel = nullptr; // init out param
1.608 + nsCOMPtr<nsISelectionController> selCon;
1.609 + if (mSelConWeak) {
1.610 + selCon = do_QueryReferent(mSelConWeak);
1.611 + } else {
1.612 + nsCOMPtr<nsIPresShell> presShell = GetPresShell();
1.613 + selCon = do_QueryInterface(presShell);
1.614 + }
1.615 + NS_ENSURE_TRUE(selCon, NS_ERROR_NOT_INITIALIZED);
1.616 + NS_ADDREF(*aSel = selCon);
1.617 + return NS_OK;
1.618 +}
1.619 +
1.620 +
1.621 +NS_IMETHODIMP
1.622 +nsEditor::DeleteSelection(EDirection aAction, EStripWrappers aStripWrappers)
1.623 +{
1.624 + MOZ_ASSERT(aStripWrappers == eStrip || aStripWrappers == eNoStrip);
1.625 + return DeleteSelectionImpl(aAction, aStripWrappers);
1.626 +}
1.627 +
1.628 +
1.629 +
1.630 +NS_IMETHODIMP
1.631 +nsEditor::GetSelection(nsISelection **aSelection)
1.632 +{
1.633 + NS_ENSURE_TRUE(aSelection, NS_ERROR_NULL_POINTER);
1.634 + *aSelection = nullptr;
1.635 + nsCOMPtr<nsISelectionController> selcon;
1.636 + GetSelectionController(getter_AddRefs(selcon));
1.637 + NS_ENSURE_TRUE(selcon, NS_ERROR_NOT_INITIALIZED);
1.638 + return selcon->GetSelection(nsISelectionController::SELECTION_NORMAL, aSelection); // does an addref
1.639 +}
1.640 +
1.641 +Selection*
1.642 +nsEditor::GetSelection()
1.643 +{
1.644 + nsCOMPtr<nsISelection> sel;
1.645 + nsresult res = GetSelection(getter_AddRefs(sel));
1.646 + NS_ENSURE_SUCCESS(res, nullptr);
1.647 +
1.648 + return static_cast<Selection*>(sel.get());
1.649 +}
1.650 +
1.651 +NS_IMETHODIMP
1.652 +nsEditor::DoTransaction(nsITransaction* aTxn)
1.653 +{
1.654 + if (mPlaceHolderBatch && !mPlaceHolderTxn) {
1.655 + nsCOMPtr<nsIAbsorbingTransaction> plcTxn = new PlaceholderTxn();
1.656 +
1.657 + // save off weak reference to placeholder txn
1.658 + mPlaceHolderTxn = do_GetWeakReference(plcTxn);
1.659 + plcTxn->Init(mPlaceHolderName, mSelState, this);
1.660 + // placeholder txn took ownership of this pointer
1.661 + mSelState = nullptr;
1.662 +
1.663 + // QI to an nsITransaction since that's what DoTransaction() expects
1.664 + nsCOMPtr<nsITransaction> theTxn = do_QueryInterface(plcTxn);
1.665 + // we will recurse, but will not hit this case in the nested call
1.666 + DoTransaction(theTxn);
1.667 +
1.668 + if (mTxnMgr) {
1.669 + nsCOMPtr<nsITransaction> topTxn = mTxnMgr->PeekUndoStack();
1.670 + if (topTxn) {
1.671 + plcTxn = do_QueryInterface(topTxn);
1.672 + if (plcTxn) {
1.673 + // there is a placeholder transaction on top of the undo stack. It
1.674 + // is either the one we just created, or an earlier one that we are
1.675 + // now merging into. From here on out remember this placeholder
1.676 + // instead of the one we just created.
1.677 + mPlaceHolderTxn = do_GetWeakReference(plcTxn);
1.678 + }
1.679 + }
1.680 + }
1.681 + }
1.682 +
1.683 + if (aTxn) {
1.684 + // XXX: Why are we doing selection specific batching stuff here?
1.685 + // XXX: Most entry points into the editor have auto variables that
1.686 + // XXX: should trigger Begin/EndUpdateViewBatch() calls that will make
1.687 + // XXX: these selection batch calls no-ops.
1.688 + // XXX:
1.689 + // XXX: I suspect that this was placed here to avoid multiple
1.690 + // XXX: selection changed notifications from happening until after
1.691 + // XXX: the transaction was done. I suppose that can still happen
1.692 + // XXX: if an embedding application called DoTransaction() directly
1.693 + // XXX: to pump its own transactions through the system, but in that
1.694 + // XXX: case, wouldn't we want to use Begin/EndUpdateViewBatch() or
1.695 + // XXX: its auto equivalent nsAutoUpdateViewBatch to ensure that
1.696 + // XXX: selection listeners have access to accurate frame data?
1.697 + // XXX:
1.698 + // XXX: Note that if we did add Begin/EndUpdateViewBatch() calls
1.699 + // XXX: we will need to make sure that they are disabled during
1.700 + // XXX: the init of the editor for text widgets to avoid layout
1.701 + // XXX: re-entry during initial reflow. - kin
1.702 +
1.703 + // get the selection and start a batch change
1.704 + nsRefPtr<Selection> selection = GetSelection();
1.705 + NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
1.706 +
1.707 + selection->StartBatchChanges();
1.708 +
1.709 + nsresult res;
1.710 + if (mTxnMgr) {
1.711 + res = mTxnMgr->DoTransaction(aTxn);
1.712 + } else {
1.713 + res = aTxn->DoTransaction();
1.714 + }
1.715 + if (NS_SUCCEEDED(res)) {
1.716 + DoAfterDoTransaction(aTxn);
1.717 + }
1.718 +
1.719 + // no need to check res here, don't lose result of operation
1.720 + selection->EndBatchChanges();
1.721 +
1.722 + NS_ENSURE_SUCCESS(res, res);
1.723 + }
1.724 +
1.725 + return NS_OK;
1.726 +}
1.727 +
1.728 +
1.729 +NS_IMETHODIMP
1.730 +nsEditor::EnableUndo(bool aEnable)
1.731 +{
1.732 + if (aEnable) {
1.733 + if (!mTxnMgr) {
1.734 + mTxnMgr = new nsTransactionManager();
1.735 + }
1.736 + mTxnMgr->SetMaxTransactionCount(-1);
1.737 + } else if (mTxnMgr) {
1.738 + // disable the transaction manager if it is enabled
1.739 + mTxnMgr->Clear();
1.740 + mTxnMgr->SetMaxTransactionCount(0);
1.741 + }
1.742 +
1.743 + return NS_OK;
1.744 +}
1.745 +
1.746 +NS_IMETHODIMP
1.747 +nsEditor::GetNumberOfUndoItems(int32_t* aNumItems)
1.748 +{
1.749 + *aNumItems = 0;
1.750 + return mTxnMgr ? mTxnMgr->GetNumberOfUndoItems(aNumItems) : NS_OK;
1.751 +}
1.752 +
1.753 +NS_IMETHODIMP
1.754 +nsEditor::GetNumberOfRedoItems(int32_t* aNumItems)
1.755 +{
1.756 + *aNumItems = 0;
1.757 + return mTxnMgr ? mTxnMgr->GetNumberOfRedoItems(aNumItems) : NS_OK;
1.758 +}
1.759 +
1.760 +NS_IMETHODIMP
1.761 +nsEditor::GetTransactionManager(nsITransactionManager* *aTxnManager)
1.762 +{
1.763 + NS_ENSURE_ARG_POINTER(aTxnManager);
1.764 +
1.765 + *aTxnManager = nullptr;
1.766 + NS_ENSURE_TRUE(mTxnMgr, NS_ERROR_FAILURE);
1.767 +
1.768 + NS_ADDREF(*aTxnManager = mTxnMgr);
1.769 + return NS_OK;
1.770 +}
1.771 +
1.772 +NS_IMETHODIMP
1.773 +nsEditor::SetTransactionManager(nsITransactionManager *aTxnManager)
1.774 +{
1.775 + NS_ENSURE_TRUE(aTxnManager, NS_ERROR_FAILURE);
1.776 +
1.777 + // nsITransactionManager is builtinclass, so this is safe
1.778 + mTxnMgr = static_cast<nsTransactionManager*>(aTxnManager);
1.779 + return NS_OK;
1.780 +}
1.781 +
1.782 +NS_IMETHODIMP
1.783 +nsEditor::Undo(uint32_t aCount)
1.784 +{
1.785 + ForceCompositionEnd();
1.786 +
1.787 + bool hasTxnMgr, hasTransaction = false;
1.788 + CanUndo(&hasTxnMgr, &hasTransaction);
1.789 + NS_ENSURE_TRUE(hasTransaction, NS_OK);
1.790 +
1.791 + nsAutoRules beginRulesSniffing(this, EditAction::undo, nsIEditor::eNone);
1.792 +
1.793 + if (!mTxnMgr) {
1.794 + return NS_OK;
1.795 + }
1.796 +
1.797 + for (uint32_t i = 0; i < aCount; ++i) {
1.798 + nsresult rv = mTxnMgr->UndoTransaction();
1.799 + NS_ENSURE_SUCCESS(rv, rv);
1.800 +
1.801 + DoAfterUndoTransaction();
1.802 + }
1.803 +
1.804 + return NS_OK;
1.805 +}
1.806 +
1.807 +
1.808 +NS_IMETHODIMP nsEditor::CanUndo(bool *aIsEnabled, bool *aCanUndo)
1.809 +{
1.810 + NS_ENSURE_TRUE(aIsEnabled && aCanUndo, NS_ERROR_NULL_POINTER);
1.811 + *aIsEnabled = !!mTxnMgr;
1.812 + if (*aIsEnabled) {
1.813 + int32_t numTxns = 0;
1.814 + mTxnMgr->GetNumberOfUndoItems(&numTxns);
1.815 + *aCanUndo = !!numTxns;
1.816 + } else {
1.817 + *aCanUndo = false;
1.818 + }
1.819 + return NS_OK;
1.820 +}
1.821 +
1.822 +
1.823 +NS_IMETHODIMP
1.824 +nsEditor::Redo(uint32_t aCount)
1.825 +{
1.826 + bool hasTxnMgr, hasTransaction = false;
1.827 + CanRedo(&hasTxnMgr, &hasTransaction);
1.828 + NS_ENSURE_TRUE(hasTransaction, NS_OK);
1.829 +
1.830 + nsAutoRules beginRulesSniffing(this, EditAction::redo, nsIEditor::eNone);
1.831 +
1.832 + if (!mTxnMgr) {
1.833 + return NS_OK;
1.834 + }
1.835 +
1.836 + for (uint32_t i = 0; i < aCount; ++i) {
1.837 + nsresult rv = mTxnMgr->RedoTransaction();
1.838 + NS_ENSURE_SUCCESS(rv, rv);
1.839 +
1.840 + DoAfterRedoTransaction();
1.841 + }
1.842 +
1.843 + return NS_OK;
1.844 +}
1.845 +
1.846 +
1.847 +NS_IMETHODIMP nsEditor::CanRedo(bool *aIsEnabled, bool *aCanRedo)
1.848 +{
1.849 + NS_ENSURE_TRUE(aIsEnabled && aCanRedo, NS_ERROR_NULL_POINTER);
1.850 +
1.851 + *aIsEnabled = !!mTxnMgr;
1.852 + if (*aIsEnabled) {
1.853 + int32_t numTxns = 0;
1.854 + mTxnMgr->GetNumberOfRedoItems(&numTxns);
1.855 + *aCanRedo = !!numTxns;
1.856 + } else {
1.857 + *aCanRedo = false;
1.858 + }
1.859 + return NS_OK;
1.860 +}
1.861 +
1.862 +
1.863 +NS_IMETHODIMP
1.864 +nsEditor::BeginTransaction()
1.865 +{
1.866 + BeginUpdateViewBatch();
1.867 +
1.868 + if (mTxnMgr) {
1.869 + mTxnMgr->BeginBatch(nullptr);
1.870 + }
1.871 +
1.872 + return NS_OK;
1.873 +}
1.874 +
1.875 +NS_IMETHODIMP
1.876 +nsEditor::EndTransaction()
1.877 +{
1.878 + if (mTxnMgr) {
1.879 + mTxnMgr->EndBatch(false);
1.880 + }
1.881 +
1.882 + EndUpdateViewBatch();
1.883 +
1.884 + return NS_OK;
1.885 +}
1.886 +
1.887 +
1.888 +// These two routines are similar to the above, but do not use
1.889 +// the transaction managers batching feature. Instead we use
1.890 +// a placeholder transaction to wrap up any further transaction
1.891 +// while the batch is open. The advantage of this is that
1.892 +// placeholder transactions can later merge, if needed. Merging
1.893 +// is unavailable between transaction manager batches.
1.894 +
1.895 +NS_IMETHODIMP
1.896 +nsEditor::BeginPlaceHolderTransaction(nsIAtom *aName)
1.897 +{
1.898 + NS_PRECONDITION(mPlaceHolderBatch >= 0, "negative placeholder batch count!");
1.899 + if (!mPlaceHolderBatch)
1.900 + {
1.901 + // time to turn on the batch
1.902 + BeginUpdateViewBatch();
1.903 + mPlaceHolderTxn = nullptr;
1.904 + mPlaceHolderName = aName;
1.905 + nsRefPtr<Selection> selection = GetSelection();
1.906 + if (selection) {
1.907 + mSelState = new nsSelectionState();
1.908 + mSelState->SaveSelection(selection);
1.909 + }
1.910 + }
1.911 + mPlaceHolderBatch++;
1.912 +
1.913 + return NS_OK;
1.914 +}
1.915 +
1.916 +NS_IMETHODIMP
1.917 +nsEditor::EndPlaceHolderTransaction()
1.918 +{
1.919 + NS_PRECONDITION(mPlaceHolderBatch > 0, "zero or negative placeholder batch count when ending batch!");
1.920 + if (mPlaceHolderBatch == 1)
1.921 + {
1.922 + nsCOMPtr<nsISelection>selection;
1.923 + GetSelection(getter_AddRefs(selection));
1.924 +
1.925 + nsCOMPtr<nsISelectionPrivate>selPrivate(do_QueryInterface(selection));
1.926 +
1.927 + // By making the assumption that no reflow happens during the calls
1.928 + // to EndUpdateViewBatch and ScrollSelectionIntoView, we are able to
1.929 + // allow the selection to cache a frame offset which is used by the
1.930 + // caret drawing code. We only enable this cache here; at other times,
1.931 + // we have no way to know whether reflow invalidates it
1.932 + // See bugs 35296 and 199412.
1.933 + if (selPrivate) {
1.934 + selPrivate->SetCanCacheFrameOffset(true);
1.935 + }
1.936 +
1.937 + {
1.938 + // Hide the caret here to avoid hiding it twice, once in EndUpdateViewBatch
1.939 + // and once in ScrollSelectionIntoView.
1.940 + nsRefPtr<nsCaret> caret;
1.941 + nsCOMPtr<nsIPresShell> presShell = GetPresShell();
1.942 +
1.943 + if (presShell)
1.944 + caret = presShell->GetCaret();
1.945 +
1.946 + // time to turn off the batch
1.947 + EndUpdateViewBatch();
1.948 + // make sure selection is in view
1.949 +
1.950 + // After ScrollSelectionIntoView(), the pending notifications might be
1.951 + // flushed and PresShell/PresContext/Frames may be dead. See bug 418470.
1.952 + ScrollSelectionIntoView(false);
1.953 + }
1.954 +
1.955 + // cached for frame offset are Not available now
1.956 + if (selPrivate) {
1.957 + selPrivate->SetCanCacheFrameOffset(false);
1.958 + }
1.959 +
1.960 + if (mSelState)
1.961 + {
1.962 + // we saved the selection state, but never got to hand it to placeholder
1.963 + // (else we ould have nulled out this pointer), so destroy it to prevent leaks.
1.964 + delete mSelState;
1.965 + mSelState = nullptr;
1.966 + }
1.967 + if (mPlaceHolderTxn) // we might have never made a placeholder if no action took place
1.968 + {
1.969 + nsCOMPtr<nsIAbsorbingTransaction> plcTxn = do_QueryReferent(mPlaceHolderTxn);
1.970 + if (plcTxn)
1.971 + {
1.972 + plcTxn->EndPlaceHolderBatch();
1.973 + }
1.974 + else
1.975 + {
1.976 + // in the future we will check to make sure undo is off here,
1.977 + // since that is the only known case where the placeholdertxn would disappear on us.
1.978 + // For now just removing the assert.
1.979 + }
1.980 + // notify editor observers of action but if composing, it's done by
1.981 + // text event handler.
1.982 + if (!mComposition) {
1.983 + NotifyEditorObservers();
1.984 + }
1.985 + }
1.986 + }
1.987 + mPlaceHolderBatch--;
1.988 +
1.989 + return NS_OK;
1.990 +}
1.991 +
1.992 +NS_IMETHODIMP
1.993 +nsEditor::ShouldTxnSetSelection(bool *aResult)
1.994 +{
1.995 + NS_ENSURE_TRUE(aResult, NS_ERROR_NULL_POINTER);
1.996 + *aResult = mShouldTxnSetSelection;
1.997 + return NS_OK;
1.998 +}
1.999 +
1.1000 +NS_IMETHODIMP
1.1001 +nsEditor::SetShouldTxnSetSelection(bool aShould)
1.1002 +{
1.1003 + mShouldTxnSetSelection = aShould;
1.1004 + return NS_OK;
1.1005 +}
1.1006 +
1.1007 +NS_IMETHODIMP
1.1008 +nsEditor::GetDocumentIsEmpty(bool *aDocumentIsEmpty)
1.1009 +{
1.1010 + *aDocumentIsEmpty = true;
1.1011 +
1.1012 + dom::Element* root = GetRoot();
1.1013 + NS_ENSURE_TRUE(root, NS_ERROR_NULL_POINTER);
1.1014 +
1.1015 + *aDocumentIsEmpty = !root->HasChildren();
1.1016 + return NS_OK;
1.1017 +}
1.1018 +
1.1019 +
1.1020 +// XXX: the rule system should tell us which node to select all on (ie, the root, or the body)
1.1021 +NS_IMETHODIMP nsEditor::SelectAll()
1.1022 +{
1.1023 + if (!mDocWeak) { return NS_ERROR_NOT_INITIALIZED; }
1.1024 + ForceCompositionEnd();
1.1025 +
1.1026 + nsCOMPtr<nsISelectionController> selCon;
1.1027 + GetSelectionController(getter_AddRefs(selCon));
1.1028 + NS_ENSURE_TRUE(selCon, NS_ERROR_NOT_INITIALIZED);
1.1029 + nsCOMPtr<nsISelection> selection;
1.1030 + nsresult result = selCon->GetSelection(nsISelectionController::SELECTION_NORMAL, getter_AddRefs(selection));
1.1031 + if (NS_SUCCEEDED(result) && selection)
1.1032 + {
1.1033 + result = SelectEntireDocument(selection);
1.1034 + }
1.1035 + return result;
1.1036 +}
1.1037 +
1.1038 +NS_IMETHODIMP nsEditor::BeginningOfDocument()
1.1039 +{
1.1040 + if (!mDocWeak) { return NS_ERROR_NOT_INITIALIZED; }
1.1041 +
1.1042 + // get the selection
1.1043 + nsCOMPtr<nsISelection> selection;
1.1044 + nsresult result = GetSelection(getter_AddRefs(selection));
1.1045 + NS_ENSURE_SUCCESS(result, result);
1.1046 + NS_ENSURE_TRUE(selection, NS_ERROR_NOT_INITIALIZED);
1.1047 +
1.1048 + // get the root element
1.1049 + dom::Element* rootElement = GetRoot();
1.1050 + NS_ENSURE_TRUE(rootElement, NS_ERROR_NULL_POINTER);
1.1051 +
1.1052 + // find first editable thingy
1.1053 + nsCOMPtr<nsINode> firstNode = GetFirstEditableNode(rootElement);
1.1054 + if (!firstNode) {
1.1055 + // just the root node, set selection to inside the root
1.1056 + return selection->CollapseNative(rootElement, 0);
1.1057 + }
1.1058 +
1.1059 + if (firstNode->NodeType() == nsIDOMNode::TEXT_NODE) {
1.1060 + // If firstNode is text, set selection to beginning of the text node.
1.1061 + return selection->CollapseNative(firstNode, 0);
1.1062 + }
1.1063 +
1.1064 + // Otherwise, it's a leaf node and we set the selection just in front of it.
1.1065 + nsCOMPtr<nsIContent> parent = firstNode->GetParent();
1.1066 + if (!parent) {
1.1067 + return NS_ERROR_NULL_POINTER;
1.1068 + }
1.1069 +
1.1070 + int32_t offsetInParent = parent->IndexOf(firstNode);
1.1071 + return selection->CollapseNative(parent, offsetInParent);
1.1072 +}
1.1073 +
1.1074 +NS_IMETHODIMP
1.1075 +nsEditor::EndOfDocument()
1.1076 +{
1.1077 + NS_ENSURE_TRUE(mDocWeak, NS_ERROR_NOT_INITIALIZED);
1.1078 +
1.1079 + // get selection
1.1080 + nsCOMPtr<nsISelection> selection;
1.1081 + nsresult rv = GetSelection(getter_AddRefs(selection));
1.1082 + NS_ENSURE_SUCCESS(rv, rv);
1.1083 + NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
1.1084 +
1.1085 + // get the root element
1.1086 + nsINode* node = GetRoot();
1.1087 + NS_ENSURE_TRUE(node, NS_ERROR_NULL_POINTER);
1.1088 + nsINode* child = node->GetLastChild();
1.1089 +
1.1090 + while (child && IsContainer(child->AsDOMNode())) {
1.1091 + node = child;
1.1092 + child = node->GetLastChild();
1.1093 + }
1.1094 +
1.1095 + uint32_t length = node->Length();
1.1096 + return selection->CollapseNative(node, int32_t(length));
1.1097 +}
1.1098 +
1.1099 +NS_IMETHODIMP
1.1100 +nsEditor::GetDocumentModified(bool *outDocModified)
1.1101 +{
1.1102 + NS_ENSURE_TRUE(outDocModified, NS_ERROR_NULL_POINTER);
1.1103 +
1.1104 + int32_t modCount = 0;
1.1105 + GetModificationCount(&modCount);
1.1106 +
1.1107 + *outDocModified = (modCount != 0);
1.1108 + return NS_OK;
1.1109 +}
1.1110 +
1.1111 +NS_IMETHODIMP
1.1112 +nsEditor::GetDocumentCharacterSet(nsACString &characterSet)
1.1113 +{
1.1114 + nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak);
1.1115 + NS_ENSURE_TRUE(doc, NS_ERROR_UNEXPECTED);
1.1116 +
1.1117 + characterSet = doc->GetDocumentCharacterSet();
1.1118 + return NS_OK;
1.1119 +}
1.1120 +
1.1121 +NS_IMETHODIMP
1.1122 +nsEditor::SetDocumentCharacterSet(const nsACString& characterSet)
1.1123 +{
1.1124 + nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak);
1.1125 + NS_ENSURE_TRUE(doc, NS_ERROR_UNEXPECTED);
1.1126 +
1.1127 + doc->SetDocumentCharacterSet(characterSet);
1.1128 + return NS_OK;
1.1129 +}
1.1130 +
1.1131 +NS_IMETHODIMP
1.1132 +nsEditor::Cut()
1.1133 +{
1.1134 + return NS_ERROR_NOT_IMPLEMENTED;
1.1135 +}
1.1136 +
1.1137 +NS_IMETHODIMP
1.1138 +nsEditor::CanCut(bool *aCanCut)
1.1139 +{
1.1140 + return NS_ERROR_NOT_IMPLEMENTED;
1.1141 +}
1.1142 +
1.1143 +NS_IMETHODIMP
1.1144 +nsEditor::Copy()
1.1145 +{
1.1146 + return NS_ERROR_NOT_IMPLEMENTED;
1.1147 +}
1.1148 +
1.1149 +NS_IMETHODIMP
1.1150 +nsEditor::CanCopy(bool *aCanCut)
1.1151 +{
1.1152 + return NS_ERROR_NOT_IMPLEMENTED;
1.1153 +}
1.1154 +
1.1155 +NS_IMETHODIMP
1.1156 +nsEditor::Paste(int32_t aSelectionType)
1.1157 +{
1.1158 + return NS_ERROR_NOT_IMPLEMENTED;
1.1159 +}
1.1160 +
1.1161 +NS_IMETHODIMP
1.1162 +nsEditor::PasteTransferable(nsITransferable *aTransferable)
1.1163 +{
1.1164 + return NS_ERROR_NOT_IMPLEMENTED;
1.1165 +}
1.1166 +
1.1167 +NS_IMETHODIMP
1.1168 +nsEditor::CanPaste(int32_t aSelectionType, bool *aCanPaste)
1.1169 +{
1.1170 + return NS_ERROR_NOT_IMPLEMENTED;
1.1171 +}
1.1172 +
1.1173 +NS_IMETHODIMP
1.1174 +nsEditor::CanPasteTransferable(nsITransferable *aTransferable, bool *aCanPaste)
1.1175 +{
1.1176 + return NS_ERROR_NOT_IMPLEMENTED;
1.1177 +}
1.1178 +
1.1179 +NS_IMETHODIMP
1.1180 +nsEditor::SetAttribute(nsIDOMElement *aElement, const nsAString & aAttribute, const nsAString & aValue)
1.1181 +{
1.1182 + nsRefPtr<ChangeAttributeTxn> txn;
1.1183 + nsresult result = CreateTxnForSetAttribute(aElement, aAttribute, aValue,
1.1184 + getter_AddRefs(txn));
1.1185 + if (NS_SUCCEEDED(result)) {
1.1186 + result = DoTransaction(txn);
1.1187 + }
1.1188 + return result;
1.1189 +}
1.1190 +
1.1191 +NS_IMETHODIMP
1.1192 +nsEditor::GetAttributeValue(nsIDOMElement *aElement,
1.1193 + const nsAString & aAttribute,
1.1194 + nsAString & aResultValue,
1.1195 + bool *aResultIsSet)
1.1196 +{
1.1197 + NS_ENSURE_TRUE(aResultIsSet, NS_ERROR_NULL_POINTER);
1.1198 + *aResultIsSet = false;
1.1199 + if (!aElement) {
1.1200 + return NS_OK;
1.1201 + }
1.1202 + nsAutoString value;
1.1203 + nsresult rv = aElement->GetAttribute(aAttribute, value);
1.1204 + NS_ENSURE_SUCCESS(rv, rv);
1.1205 + if (!DOMStringIsNull(value)) {
1.1206 + *aResultIsSet = true;
1.1207 + aResultValue = value;
1.1208 + }
1.1209 + return rv;
1.1210 +}
1.1211 +
1.1212 +NS_IMETHODIMP
1.1213 +nsEditor::RemoveAttribute(nsIDOMElement *aElement, const nsAString& aAttribute)
1.1214 +{
1.1215 + nsRefPtr<ChangeAttributeTxn> txn;
1.1216 + nsresult result = CreateTxnForRemoveAttribute(aElement, aAttribute,
1.1217 + getter_AddRefs(txn));
1.1218 + if (NS_SUCCEEDED(result)) {
1.1219 + result = DoTransaction(txn);
1.1220 + }
1.1221 + return result;
1.1222 +}
1.1223 +
1.1224 +
1.1225 +bool
1.1226 +nsEditor::OutputsMozDirty()
1.1227 +{
1.1228 + // Return true for Composer (!eEditorAllowInteraction) or mail
1.1229 + // (eEditorMailMask), but false for webpages.
1.1230 + return !(mFlags & nsIPlaintextEditor::eEditorAllowInteraction) ||
1.1231 + (mFlags & nsIPlaintextEditor::eEditorMailMask);
1.1232 +}
1.1233 +
1.1234 +
1.1235 +NS_IMETHODIMP
1.1236 +nsEditor::MarkNodeDirty(nsIDOMNode* aNode)
1.1237 +{
1.1238 + // Mark the node dirty, but not for webpages (bug 599983)
1.1239 + if (!OutputsMozDirty()) {
1.1240 + return NS_OK;
1.1241 + }
1.1242 + nsCOMPtr<dom::Element> element = do_QueryInterface(aNode);
1.1243 + if (element) {
1.1244 + element->SetAttr(kNameSpaceID_None, nsEditProperty::mozdirty,
1.1245 + EmptyString(), false);
1.1246 + }
1.1247 + return NS_OK;
1.1248 +}
1.1249 +
1.1250 +NS_IMETHODIMP nsEditor::GetInlineSpellChecker(bool autoCreate,
1.1251 + nsIInlineSpellChecker ** aInlineSpellChecker)
1.1252 +{
1.1253 + NS_ENSURE_ARG_POINTER(aInlineSpellChecker);
1.1254 +
1.1255 + if (mDidPreDestroy) {
1.1256 + // Don't allow people to get or create the spell checker once the editor
1.1257 + // is going away.
1.1258 + *aInlineSpellChecker = nullptr;
1.1259 + return autoCreate ? NS_ERROR_NOT_AVAILABLE : NS_OK;
1.1260 + }
1.1261 +
1.1262 + // We don't want to show the spell checking UI if there are no spell check dictionaries available.
1.1263 + bool canSpell = mozInlineSpellChecker::CanEnableInlineSpellChecking();
1.1264 + if (!canSpell) {
1.1265 + *aInlineSpellChecker = nullptr;
1.1266 + return NS_ERROR_FAILURE;
1.1267 + }
1.1268 +
1.1269 + nsresult rv;
1.1270 + if (!mInlineSpellChecker && autoCreate) {
1.1271 + mInlineSpellChecker = do_CreateInstance(MOZ_INLINESPELLCHECKER_CONTRACTID, &rv);
1.1272 + NS_ENSURE_SUCCESS(rv, rv);
1.1273 + }
1.1274 +
1.1275 + if (mInlineSpellChecker) {
1.1276 + rv = mInlineSpellChecker->Init(this);
1.1277 + if (NS_FAILED(rv))
1.1278 + mInlineSpellChecker = nullptr;
1.1279 + NS_ENSURE_SUCCESS(rv, rv);
1.1280 + }
1.1281 +
1.1282 + NS_IF_ADDREF(*aInlineSpellChecker = mInlineSpellChecker);
1.1283 +
1.1284 + return NS_OK;
1.1285 +}
1.1286 +
1.1287 +NS_IMETHODIMP nsEditor::Observe(nsISupports* aSubj, const char *aTopic,
1.1288 + const char16_t *aData)
1.1289 +{
1.1290 + NS_ASSERTION(!strcmp(aTopic,
1.1291 + SPELLCHECK_DICTIONARY_UPDATE_NOTIFICATION),
1.1292 + "Unexpected observer topic");
1.1293 +
1.1294 + // When mozInlineSpellChecker::CanEnableInlineSpellChecking changes
1.1295 + SyncRealTimeSpell();
1.1296 +
1.1297 + // When nsIEditorSpellCheck::GetCurrentDictionary changes
1.1298 + if (mInlineSpellChecker) {
1.1299 + // if the current dictionary is no longer available, find another one
1.1300 + nsCOMPtr<nsIEditorSpellCheck> editorSpellCheck;
1.1301 + mInlineSpellChecker->GetSpellChecker(getter_AddRefs(editorSpellCheck));
1.1302 + if (editorSpellCheck) {
1.1303 + // Note: This might change the current dictionary, which may call
1.1304 + // this observer recursively.
1.1305 + editorSpellCheck->CheckCurrentDictionary();
1.1306 + }
1.1307 +
1.1308 + // update the inline spell checker to reflect the new current dictionary
1.1309 + mInlineSpellChecker->SpellCheckRange(nullptr); // causes recheck
1.1310 + }
1.1311 +
1.1312 + return NS_OK;
1.1313 +}
1.1314 +
1.1315 +NS_IMETHODIMP nsEditor::SyncRealTimeSpell()
1.1316 +{
1.1317 + bool enable = GetDesiredSpellCheckState();
1.1318 +
1.1319 + // Initializes mInlineSpellChecker
1.1320 + nsCOMPtr<nsIInlineSpellChecker> spellChecker;
1.1321 + GetInlineSpellChecker(enable, getter_AddRefs(spellChecker));
1.1322 +
1.1323 + if (mInlineSpellChecker) {
1.1324 + // We might have a mInlineSpellChecker even if there are no dictionaries
1.1325 + // available since we don't destroy the mInlineSpellChecker when the last
1.1326 + // dictionariy is removed, but in that case spellChecker is null
1.1327 + mInlineSpellChecker->SetEnableRealTimeSpell(enable && spellChecker);
1.1328 + }
1.1329 +
1.1330 + return NS_OK;
1.1331 +}
1.1332 +
1.1333 +NS_IMETHODIMP nsEditor::SetSpellcheckUserOverride(bool enable)
1.1334 +{
1.1335 + mSpellcheckCheckboxState = enable ? eTriTrue : eTriFalse;
1.1336 +
1.1337 + return SyncRealTimeSpell();
1.1338 +}
1.1339 +
1.1340 +NS_IMETHODIMP nsEditor::CreateNode(const nsAString& aTag,
1.1341 + nsIDOMNode * aParent,
1.1342 + int32_t aPosition,
1.1343 + nsIDOMNode ** aNewNode)
1.1344 +{
1.1345 + int32_t i;
1.1346 +
1.1347 + nsAutoRules beginRulesSniffing(this, EditAction::createNode, nsIEditor::eNext);
1.1348 +
1.1349 + for (i = 0; i < mActionListeners.Count(); i++)
1.1350 + mActionListeners[i]->WillCreateNode(aTag, aParent, aPosition);
1.1351 +
1.1352 + nsRefPtr<CreateElementTxn> txn;
1.1353 + nsresult result = CreateTxnForCreateElement(aTag, aParent, aPosition,
1.1354 + getter_AddRefs(txn));
1.1355 + if (NS_SUCCEEDED(result))
1.1356 + {
1.1357 + result = DoTransaction(txn);
1.1358 + if (NS_SUCCEEDED(result))
1.1359 + {
1.1360 + result = txn->GetNewNode(aNewNode);
1.1361 + NS_ASSERTION((NS_SUCCEEDED(result)), "GetNewNode can't fail if txn::DoTransaction succeeded.");
1.1362 + }
1.1363 + }
1.1364 +
1.1365 + mRangeUpdater.SelAdjCreateNode(aParent, aPosition);
1.1366 +
1.1367 + for (i = 0; i < mActionListeners.Count(); i++)
1.1368 + mActionListeners[i]->DidCreateNode(aTag, *aNewNode, aParent, aPosition, result);
1.1369 +
1.1370 + return result;
1.1371 +}
1.1372 +
1.1373 +
1.1374 +NS_IMETHODIMP nsEditor::InsertNode(nsIDOMNode * aNode,
1.1375 + nsIDOMNode * aParent,
1.1376 + int32_t aPosition)
1.1377 +{
1.1378 + int32_t i;
1.1379 + nsAutoRules beginRulesSniffing(this, EditAction::insertNode, nsIEditor::eNext);
1.1380 +
1.1381 + for (i = 0; i < mActionListeners.Count(); i++)
1.1382 + mActionListeners[i]->WillInsertNode(aNode, aParent, aPosition);
1.1383 +
1.1384 + nsRefPtr<InsertElementTxn> txn;
1.1385 + nsresult result = CreateTxnForInsertElement(aNode, aParent, aPosition,
1.1386 + getter_AddRefs(txn));
1.1387 + if (NS_SUCCEEDED(result)) {
1.1388 + result = DoTransaction(txn);
1.1389 + }
1.1390 +
1.1391 + mRangeUpdater.SelAdjInsertNode(aParent, aPosition);
1.1392 +
1.1393 + for (i = 0; i < mActionListeners.Count(); i++)
1.1394 + mActionListeners[i]->DidInsertNode(aNode, aParent, aPosition, result);
1.1395 +
1.1396 + return result;
1.1397 +}
1.1398 +
1.1399 +
1.1400 +NS_IMETHODIMP
1.1401 +nsEditor::SplitNode(nsIDOMNode * aNode,
1.1402 + int32_t aOffset,
1.1403 + nsIDOMNode **aNewLeftNode)
1.1404 +{
1.1405 + int32_t i;
1.1406 + nsAutoRules beginRulesSniffing(this, EditAction::splitNode, nsIEditor::eNext);
1.1407 +
1.1408 + for (i = 0; i < mActionListeners.Count(); i++)
1.1409 + mActionListeners[i]->WillSplitNode(aNode, aOffset);
1.1410 +
1.1411 + nsRefPtr<SplitElementTxn> txn;
1.1412 + nsresult result = CreateTxnForSplitNode(aNode, aOffset, getter_AddRefs(txn));
1.1413 + if (NS_SUCCEEDED(result))
1.1414 + {
1.1415 + result = DoTransaction(txn);
1.1416 + if (NS_SUCCEEDED(result))
1.1417 + {
1.1418 + result = txn->GetNewNode(aNewLeftNode);
1.1419 + NS_ASSERTION((NS_SUCCEEDED(result)), "result must succeeded for GetNewNode");
1.1420 + }
1.1421 + }
1.1422 +
1.1423 + mRangeUpdater.SelAdjSplitNode(aNode, aOffset, *aNewLeftNode);
1.1424 +
1.1425 + for (i = 0; i < mActionListeners.Count(); i++)
1.1426 + {
1.1427 + nsIDOMNode *ptr = *aNewLeftNode;
1.1428 + mActionListeners[i]->DidSplitNode(aNode, aOffset, ptr, result);
1.1429 + }
1.1430 +
1.1431 + return result;
1.1432 +}
1.1433 +
1.1434 +
1.1435 +nsresult
1.1436 +nsEditor::JoinNodes(nsINode* aNodeToKeep, nsIContent* aNodeToMove)
1.1437 +{
1.1438 + // We don't really need aNodeToMove's parent to be non-null -- we could just
1.1439 + // skip adjusting any ranges in aNodeToMove's parent if there is none. But
1.1440 + // the current implementation requires it.
1.1441 + MOZ_ASSERT(aNodeToKeep && aNodeToMove && aNodeToMove->GetParentNode());
1.1442 + nsresult res = JoinNodes(aNodeToKeep->AsDOMNode(), aNodeToMove->AsDOMNode(),
1.1443 + aNodeToMove->GetParentNode()->AsDOMNode());
1.1444 + NS_ASSERTION(NS_SUCCEEDED(res), "JoinNodes failed");
1.1445 + NS_ENSURE_SUCCESS(res, res);
1.1446 + return NS_OK;
1.1447 +}
1.1448 +
1.1449 +NS_IMETHODIMP
1.1450 +nsEditor::JoinNodes(nsIDOMNode * aLeftNode,
1.1451 + nsIDOMNode * aRightNode,
1.1452 + nsIDOMNode * aParent)
1.1453 +{
1.1454 + int32_t i;
1.1455 + nsAutoRules beginRulesSniffing(this, EditAction::joinNode, nsIEditor::ePrevious);
1.1456 +
1.1457 + // remember some values; later used for saved selection updating.
1.1458 + // find the offset between the nodes to be joined.
1.1459 + int32_t offset = GetChildOffset(aRightNode, aParent);
1.1460 + // find the number of children of the lefthand node
1.1461 + uint32_t oldLeftNodeLen;
1.1462 + nsresult result = GetLengthOfDOMNode(aLeftNode, oldLeftNodeLen);
1.1463 + NS_ENSURE_SUCCESS(result, result);
1.1464 +
1.1465 + for (i = 0; i < mActionListeners.Count(); i++)
1.1466 + mActionListeners[i]->WillJoinNodes(aLeftNode, aRightNode, aParent);
1.1467 +
1.1468 + nsRefPtr<JoinElementTxn> txn;
1.1469 + result = CreateTxnForJoinNode(aLeftNode, aRightNode, getter_AddRefs(txn));
1.1470 + if (NS_SUCCEEDED(result)) {
1.1471 + result = DoTransaction(txn);
1.1472 + }
1.1473 +
1.1474 + mRangeUpdater.SelAdjJoinNodes(aLeftNode, aRightNode, aParent, offset, (int32_t)oldLeftNodeLen);
1.1475 +
1.1476 + for (i = 0; i < mActionListeners.Count(); i++)
1.1477 + mActionListeners[i]->DidJoinNodes(aLeftNode, aRightNode, aParent, result);
1.1478 +
1.1479 + return result;
1.1480 +}
1.1481 +
1.1482 +
1.1483 +NS_IMETHODIMP
1.1484 +nsEditor::DeleteNode(nsIDOMNode* aNode)
1.1485 +{
1.1486 + nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
1.1487 + NS_ENSURE_STATE(node);
1.1488 + return DeleteNode(node);
1.1489 +}
1.1490 +
1.1491 +nsresult
1.1492 +nsEditor::DeleteNode(nsINode* aNode)
1.1493 +{
1.1494 + nsAutoRules beginRulesSniffing(this, EditAction::createNode, nsIEditor::ePrevious);
1.1495 +
1.1496 + // save node location for selection updating code.
1.1497 + for (int32_t i = 0; i < mActionListeners.Count(); i++) {
1.1498 + mActionListeners[i]->WillDeleteNode(aNode->AsDOMNode());
1.1499 + }
1.1500 +
1.1501 + nsRefPtr<DeleteNodeTxn> txn;
1.1502 + nsresult res = CreateTxnForDeleteNode(aNode, getter_AddRefs(txn));
1.1503 + if (NS_SUCCEEDED(res)) {
1.1504 + res = DoTransaction(txn);
1.1505 + }
1.1506 +
1.1507 + for (int32_t i = 0; i < mActionListeners.Count(); i++) {
1.1508 + mActionListeners[i]->DidDeleteNode(aNode->AsDOMNode(), res);
1.1509 + }
1.1510 +
1.1511 + NS_ENSURE_SUCCESS(res, res);
1.1512 + return NS_OK;
1.1513 +}
1.1514 +
1.1515 +///////////////////////////////////////////////////////////////////////////
1.1516 +// ReplaceContainer: replace inNode with a new node (outNode) which is contructed
1.1517 +// to be of type aNodeType. Put inNodes children into outNode.
1.1518 +// Callers responsibility to make sure inNode's children can
1.1519 +// go in outNode.
1.1520 +nsresult
1.1521 +nsEditor::ReplaceContainer(nsIDOMNode *inNode,
1.1522 + nsCOMPtr<nsIDOMNode> *outNode,
1.1523 + const nsAString &aNodeType,
1.1524 + const nsAString *aAttribute,
1.1525 + const nsAString *aValue,
1.1526 + bool aCloneAttributes)
1.1527 +{
1.1528 + NS_ENSURE_TRUE(inNode && outNode, NS_ERROR_NULL_POINTER);
1.1529 +
1.1530 + nsCOMPtr<nsINode> node = do_QueryInterface(inNode);
1.1531 + NS_ENSURE_STATE(node);
1.1532 +
1.1533 + nsCOMPtr<dom::Element> element;
1.1534 + nsresult rv = ReplaceContainer(node, getter_AddRefs(element), aNodeType,
1.1535 + aAttribute, aValue, aCloneAttributes);
1.1536 + *outNode = element ? element->AsDOMNode() : nullptr;
1.1537 + return rv;
1.1538 +}
1.1539 +
1.1540 +nsresult
1.1541 +nsEditor::ReplaceContainer(nsINode* aNode,
1.1542 + dom::Element** outNode,
1.1543 + const nsAString& aNodeType,
1.1544 + const nsAString* aAttribute,
1.1545 + const nsAString* aValue,
1.1546 + bool aCloneAttributes)
1.1547 +{
1.1548 + MOZ_ASSERT(aNode);
1.1549 + MOZ_ASSERT(outNode);
1.1550 +
1.1551 + *outNode = nullptr;
1.1552 +
1.1553 + nsCOMPtr<nsIContent> parent = aNode->GetParent();
1.1554 + NS_ENSURE_STATE(parent);
1.1555 +
1.1556 + int32_t offset = parent->IndexOf(aNode);
1.1557 +
1.1558 + // create new container
1.1559 + //new call to use instead to get proper HTML element, bug# 39919
1.1560 + nsresult res = CreateHTMLContent(aNodeType, outNode);
1.1561 + NS_ENSURE_SUCCESS(res, res);
1.1562 +
1.1563 + nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(*outNode);
1.1564 +
1.1565 + nsIDOMNode* inNode = aNode->AsDOMNode();
1.1566 +
1.1567 + // set attribute if needed
1.1568 + if (aAttribute && aValue && !aAttribute->IsEmpty()) {
1.1569 + res = elem->SetAttribute(*aAttribute, *aValue);
1.1570 + NS_ENSURE_SUCCESS(res, res);
1.1571 + }
1.1572 + if (aCloneAttributes) {
1.1573 + res = CloneAttributes(elem, inNode);
1.1574 + NS_ENSURE_SUCCESS(res, res);
1.1575 + }
1.1576 +
1.1577 + // notify our internal selection state listener
1.1578 + // (Note: A nsAutoSelectionReset object must be created
1.1579 + // before calling this to initialize mRangeUpdater)
1.1580 + nsAutoReplaceContainerSelNotify selStateNotify(mRangeUpdater, inNode, elem);
1.1581 + {
1.1582 + nsAutoTxnsConserveSelection conserveSelection(this);
1.1583 + while (aNode->HasChildren()) {
1.1584 + nsCOMPtr<nsIDOMNode> child = aNode->GetFirstChild()->AsDOMNode();
1.1585 +
1.1586 + res = DeleteNode(child);
1.1587 + NS_ENSURE_SUCCESS(res, res);
1.1588 +
1.1589 + res = InsertNode(child, elem, -1);
1.1590 + NS_ENSURE_SUCCESS(res, res);
1.1591 + }
1.1592 + }
1.1593 +
1.1594 + // insert new container into tree
1.1595 + res = InsertNode(elem, parent->AsDOMNode(), offset);
1.1596 + NS_ENSURE_SUCCESS(res, res);
1.1597 +
1.1598 + // delete old container
1.1599 + return DeleteNode(inNode);
1.1600 +}
1.1601 +
1.1602 +///////////////////////////////////////////////////////////////////////////
1.1603 +// RemoveContainer: remove inNode, reparenting its children into their
1.1604 +// the parent of inNode
1.1605 +//
1.1606 +nsresult
1.1607 +nsEditor::RemoveContainer(nsIDOMNode* aNode)
1.1608 +{
1.1609 + nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
1.1610 + return RemoveContainer(node);
1.1611 +}
1.1612 +
1.1613 +nsresult
1.1614 +nsEditor::RemoveContainer(nsINode* aNode)
1.1615 +{
1.1616 + NS_ENSURE_TRUE(aNode, NS_ERROR_NULL_POINTER);
1.1617 +
1.1618 + nsCOMPtr<nsINode> parent = aNode->GetParentNode();
1.1619 + NS_ENSURE_STATE(parent);
1.1620 +
1.1621 + int32_t offset = parent->IndexOf(aNode);
1.1622 +
1.1623 + // loop through the child nodes of inNode and promote them
1.1624 + // into inNode's parent.
1.1625 + uint32_t nodeOrigLen = aNode->GetChildCount();
1.1626 +
1.1627 + // notify our internal selection state listener
1.1628 + nsAutoRemoveContainerSelNotify selNotify(mRangeUpdater, aNode, parent, offset, nodeOrigLen);
1.1629 +
1.1630 + while (aNode->HasChildren()) {
1.1631 + nsCOMPtr<nsIContent> child = aNode->GetLastChild();
1.1632 + nsresult rv = DeleteNode(child->AsDOMNode());
1.1633 + NS_ENSURE_SUCCESS(rv, rv);
1.1634 +
1.1635 + rv = InsertNode(child->AsDOMNode(), parent->AsDOMNode(), offset);
1.1636 + NS_ENSURE_SUCCESS(rv, rv);
1.1637 + }
1.1638 +
1.1639 + return DeleteNode(aNode->AsDOMNode());
1.1640 +}
1.1641 +
1.1642 +
1.1643 +///////////////////////////////////////////////////////////////////////////
1.1644 +// InsertContainerAbove: insert a new parent for inNode, returned in outNode,
1.1645 +// which is contructed to be of type aNodeType. outNode becomes
1.1646 +// a child of inNode's earlier parent.
1.1647 +// Callers responsibility to make sure inNode's can be child
1.1648 +// of outNode, and outNode can be child of old parent.
1.1649 +nsresult
1.1650 +nsEditor::InsertContainerAbove( nsIDOMNode *inNode,
1.1651 + nsCOMPtr<nsIDOMNode> *outNode,
1.1652 + const nsAString &aNodeType,
1.1653 + const nsAString *aAttribute,
1.1654 + const nsAString *aValue)
1.1655 +{
1.1656 + NS_ENSURE_TRUE(inNode && outNode, NS_ERROR_NULL_POINTER);
1.1657 +
1.1658 + nsCOMPtr<nsIContent> node = do_QueryInterface(inNode);
1.1659 + NS_ENSURE_STATE(node);
1.1660 +
1.1661 + nsCOMPtr<dom::Element> element;
1.1662 + nsresult rv = InsertContainerAbove(node, getter_AddRefs(element), aNodeType,
1.1663 + aAttribute, aValue);
1.1664 + *outNode = element ? element->AsDOMNode() : nullptr;
1.1665 + return rv;
1.1666 +}
1.1667 +
1.1668 +nsresult
1.1669 +nsEditor::InsertContainerAbove(nsIContent* aNode,
1.1670 + dom::Element** aOutNode,
1.1671 + const nsAString& aNodeType,
1.1672 + const nsAString* aAttribute,
1.1673 + const nsAString* aValue)
1.1674 +{
1.1675 + MOZ_ASSERT(aNode);
1.1676 +
1.1677 + nsCOMPtr<nsIContent> parent = aNode->GetParent();
1.1678 + NS_ENSURE_STATE(parent);
1.1679 + int32_t offset = parent->IndexOf(aNode);
1.1680 +
1.1681 + // create new container
1.1682 + nsCOMPtr<dom::Element> newContent;
1.1683 +
1.1684 + //new call to use instead to get proper HTML element, bug# 39919
1.1685 + nsresult res = CreateHTMLContent(aNodeType, getter_AddRefs(newContent));
1.1686 + NS_ENSURE_SUCCESS(res, res);
1.1687 +
1.1688 + // set attribute if needed
1.1689 + if (aAttribute && aValue && !aAttribute->IsEmpty()) {
1.1690 + nsIDOMNode* elem = newContent->AsDOMNode();
1.1691 + res = static_cast<nsIDOMElement*>(elem)->SetAttribute(*aAttribute, *aValue);
1.1692 + NS_ENSURE_SUCCESS(res, res);
1.1693 + }
1.1694 +
1.1695 + // notify our internal selection state listener
1.1696 + nsAutoInsertContainerSelNotify selNotify(mRangeUpdater);
1.1697 +
1.1698 + // put inNode in new parent, outNode
1.1699 + res = DeleteNode(aNode->AsDOMNode());
1.1700 + NS_ENSURE_SUCCESS(res, res);
1.1701 +
1.1702 + {
1.1703 + nsAutoTxnsConserveSelection conserveSelection(this);
1.1704 + res = InsertNode(aNode->AsDOMNode(), newContent->AsDOMNode(), 0);
1.1705 + NS_ENSURE_SUCCESS(res, res);
1.1706 + }
1.1707 +
1.1708 + // put new parent in doc
1.1709 + res = InsertNode(newContent->AsDOMNode(), parent->AsDOMNode(), offset);
1.1710 + newContent.forget(aOutNode);
1.1711 + return res;
1.1712 +}
1.1713 +
1.1714 +///////////////////////////////////////////////////////////////////////////
1.1715 +// MoveNode: move aNode to {aParent,aOffset}
1.1716 +nsresult
1.1717 +nsEditor::MoveNode(nsIDOMNode* aNode, nsIDOMNode* aParent, int32_t aOffset)
1.1718 +{
1.1719 + nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
1.1720 + NS_ENSURE_STATE(node);
1.1721 +
1.1722 + nsCOMPtr<nsINode> parent = do_QueryInterface(aParent);
1.1723 + NS_ENSURE_STATE(parent);
1.1724 +
1.1725 + return MoveNode(node, parent, aOffset);
1.1726 +}
1.1727 +
1.1728 +nsresult
1.1729 +nsEditor::MoveNode(nsINode* aNode, nsINode* aParent, int32_t aOffset)
1.1730 +{
1.1731 + MOZ_ASSERT(aNode);
1.1732 + MOZ_ASSERT(aParent);
1.1733 + MOZ_ASSERT(aOffset == -1 ||
1.1734 + (0 <= aOffset && SafeCast<uint32_t>(aOffset) <= aParent->Length()));
1.1735 +
1.1736 + int32_t oldOffset;
1.1737 + nsCOMPtr<nsINode> oldParent = GetNodeLocation(aNode, &oldOffset);
1.1738 +
1.1739 + if (aOffset == -1) {
1.1740 + // Magic value meaning "move to end of aParent".
1.1741 + aOffset = SafeCast<int32_t>(aParent->Length());
1.1742 + }
1.1743 +
1.1744 + // Don't do anything if it's already in right place.
1.1745 + if (aParent == oldParent && aOffset == oldOffset) {
1.1746 + return NS_OK;
1.1747 + }
1.1748 +
1.1749 + // Notify our internal selection state listener.
1.1750 + nsAutoMoveNodeSelNotify selNotify(mRangeUpdater, oldParent, oldOffset,
1.1751 + aParent, aOffset);
1.1752 +
1.1753 + // Need to adjust aOffset if we are moving aNode further along in its current
1.1754 + // parent.
1.1755 + if (aParent == oldParent && oldOffset < aOffset) {
1.1756 + // This is because when we delete aNode, it will make the offsets after it
1.1757 + // off by one.
1.1758 + aOffset--;
1.1759 + }
1.1760 +
1.1761 + // Hold a reference so aNode doesn't go away when we remove it (bug 772282).
1.1762 + nsCOMPtr<nsINode> kungFuDeathGrip = aNode;
1.1763 +
1.1764 + nsresult rv = DeleteNode(aNode);
1.1765 + NS_ENSURE_SUCCESS(rv, rv);
1.1766 +
1.1767 + return InsertNode(aNode->AsDOMNode(), aParent->AsDOMNode(), aOffset);
1.1768 +}
1.1769 +
1.1770 +
1.1771 +NS_IMETHODIMP
1.1772 +nsEditor::AddEditorObserver(nsIEditorObserver *aObserver)
1.1773 +{
1.1774 + // we don't keep ownership of the observers. They must
1.1775 + // remove themselves as observers before they are destroyed.
1.1776 +
1.1777 + NS_ENSURE_TRUE(aObserver, NS_ERROR_NULL_POINTER);
1.1778 +
1.1779 + // Make sure the listener isn't already on the list
1.1780 + if (mEditorObservers.IndexOf(aObserver) == -1)
1.1781 + {
1.1782 + if (!mEditorObservers.AppendObject(aObserver))
1.1783 + return NS_ERROR_FAILURE;
1.1784 + }
1.1785 +
1.1786 + return NS_OK;
1.1787 +}
1.1788 +
1.1789 +
1.1790 +NS_IMETHODIMP
1.1791 +nsEditor::RemoveEditorObserver(nsIEditorObserver *aObserver)
1.1792 +{
1.1793 + NS_ENSURE_TRUE(aObserver, NS_ERROR_FAILURE);
1.1794 +
1.1795 + if (!mEditorObservers.RemoveObject(aObserver))
1.1796 + return NS_ERROR_FAILURE;
1.1797 +
1.1798 + return NS_OK;
1.1799 +}
1.1800 +
1.1801 +class EditorInputEventDispatcher : public nsRunnable
1.1802 +{
1.1803 +public:
1.1804 + EditorInputEventDispatcher(nsEditor* aEditor,
1.1805 + nsIContent* aTarget,
1.1806 + bool aIsComposing)
1.1807 + : mEditor(aEditor)
1.1808 + , mTarget(aTarget)
1.1809 + , mIsComposing(aIsComposing)
1.1810 + {
1.1811 + }
1.1812 +
1.1813 + NS_IMETHOD Run()
1.1814 + {
1.1815 + // Note that we don't need to check mDispatchInputEvent here. We need
1.1816 + // to check it only when the editor requests to dispatch the input event.
1.1817 +
1.1818 + if (!mTarget->IsInDoc()) {
1.1819 + return NS_OK;
1.1820 + }
1.1821 +
1.1822 + nsCOMPtr<nsIPresShell> ps = mEditor->GetPresShell();
1.1823 + if (!ps) {
1.1824 + return NS_OK;
1.1825 + }
1.1826 +
1.1827 + nsCOMPtr<nsIWidget> widget = mEditor->GetWidget();
1.1828 + if (!widget) {
1.1829 + return NS_OK;
1.1830 + }
1.1831 +
1.1832 + // Even if the change is caused by untrusted event, we need to dispatch
1.1833 + // trusted input event since it's a fact.
1.1834 + InternalEditorInputEvent inputEvent(true, NS_EDITOR_INPUT, widget);
1.1835 + inputEvent.time = static_cast<uint64_t>(PR_Now() / 1000);
1.1836 + inputEvent.mIsComposing = mIsComposing;
1.1837 + nsEventStatus status = nsEventStatus_eIgnore;
1.1838 + nsresult rv =
1.1839 + ps->HandleEventWithTarget(&inputEvent, nullptr, mTarget, &status);
1.1840 + NS_ENSURE_SUCCESS(rv, NS_OK); // print the warning if error
1.1841 + return NS_OK;
1.1842 + }
1.1843 +
1.1844 +private:
1.1845 + nsRefPtr<nsEditor> mEditor;
1.1846 + nsCOMPtr<nsIContent> mTarget;
1.1847 + bool mIsComposing;
1.1848 +};
1.1849 +
1.1850 +void nsEditor::NotifyEditorObservers(void)
1.1851 +{
1.1852 + for (int32_t i = 0; i < mEditorObservers.Count(); i++) {
1.1853 + mEditorObservers[i]->EditAction();
1.1854 + }
1.1855 +
1.1856 + if (!mDispatchInputEvent) {
1.1857 + return;
1.1858 + }
1.1859 +
1.1860 + FireInputEvent();
1.1861 +}
1.1862 +
1.1863 +void
1.1864 +nsEditor::FireInputEvent()
1.1865 +{
1.1866 + // We don't need to dispatch multiple input events if there is a pending
1.1867 + // input event. However, it may have different event target. If we resolved
1.1868 + // this issue, we need to manage the pending events in an array. But it's
1.1869 + // overwork. We don't need to do it for the very rare case.
1.1870 +
1.1871 + nsCOMPtr<nsIContent> target = GetInputEventTargetContent();
1.1872 + NS_ENSURE_TRUE_VOID(target);
1.1873 +
1.1874 + // NOTE: Don't refer IsIMEComposing() because it returns false even before
1.1875 + // compositionend. However, DOM Level 3 Events defines it should be
1.1876 + // true after compositionstart and before compositionend.
1.1877 + nsContentUtils::AddScriptRunner(
1.1878 + new EditorInputEventDispatcher(this, target, !!GetComposition()));
1.1879 +}
1.1880 +
1.1881 +NS_IMETHODIMP
1.1882 +nsEditor::AddEditActionListener(nsIEditActionListener *aListener)
1.1883 +{
1.1884 + NS_ENSURE_TRUE(aListener, NS_ERROR_NULL_POINTER);
1.1885 +
1.1886 + // Make sure the listener isn't already on the list
1.1887 + if (mActionListeners.IndexOf(aListener) == -1)
1.1888 + {
1.1889 + if (!mActionListeners.AppendObject(aListener))
1.1890 + return NS_ERROR_FAILURE;
1.1891 + }
1.1892 +
1.1893 + return NS_OK;
1.1894 +}
1.1895 +
1.1896 +
1.1897 +NS_IMETHODIMP
1.1898 +nsEditor::RemoveEditActionListener(nsIEditActionListener *aListener)
1.1899 +{
1.1900 + NS_ENSURE_TRUE(aListener, NS_ERROR_FAILURE);
1.1901 +
1.1902 + if (!mActionListeners.RemoveObject(aListener))
1.1903 + return NS_ERROR_FAILURE;
1.1904 +
1.1905 + return NS_OK;
1.1906 +}
1.1907 +
1.1908 +
1.1909 +NS_IMETHODIMP
1.1910 +nsEditor::AddDocumentStateListener(nsIDocumentStateListener *aListener)
1.1911 +{
1.1912 + NS_ENSURE_TRUE(aListener, NS_ERROR_NULL_POINTER);
1.1913 +
1.1914 + if (mDocStateListeners.IndexOf(aListener) == -1)
1.1915 + {
1.1916 + if (!mDocStateListeners.AppendObject(aListener))
1.1917 + return NS_ERROR_FAILURE;
1.1918 + }
1.1919 +
1.1920 + return NS_OK;
1.1921 +}
1.1922 +
1.1923 +
1.1924 +NS_IMETHODIMP
1.1925 +nsEditor::RemoveDocumentStateListener(nsIDocumentStateListener *aListener)
1.1926 +{
1.1927 + NS_ENSURE_TRUE(aListener, NS_ERROR_NULL_POINTER);
1.1928 +
1.1929 + if (!mDocStateListeners.RemoveObject(aListener))
1.1930 + return NS_ERROR_FAILURE;
1.1931 +
1.1932 + return NS_OK;
1.1933 +}
1.1934 +
1.1935 +
1.1936 +NS_IMETHODIMP nsEditor::OutputToString(const nsAString& aFormatType,
1.1937 + uint32_t aFlags,
1.1938 + nsAString& aOutputString)
1.1939 +{
1.1940 + // these should be implemented by derived classes.
1.1941 + return NS_ERROR_NOT_IMPLEMENTED;
1.1942 +}
1.1943 +
1.1944 +NS_IMETHODIMP
1.1945 +nsEditor::OutputToStream(nsIOutputStream* aOutputStream,
1.1946 + const nsAString& aFormatType,
1.1947 + const nsACString& aCharsetOverride,
1.1948 + uint32_t aFlags)
1.1949 +{
1.1950 + // these should be implemented by derived classes.
1.1951 + return NS_ERROR_NOT_IMPLEMENTED;
1.1952 +}
1.1953 +
1.1954 +NS_IMETHODIMP
1.1955 +nsEditor::DumpContentTree()
1.1956 +{
1.1957 +#ifdef DEBUG
1.1958 + if (mRootElement) {
1.1959 + mRootElement->List(stdout);
1.1960 + }
1.1961 +#endif
1.1962 + return NS_OK;
1.1963 +}
1.1964 +
1.1965 +
1.1966 +NS_IMETHODIMP
1.1967 +nsEditor::DebugDumpContent()
1.1968 +{
1.1969 +#ifdef DEBUG
1.1970 + nsCOMPtr<nsIDOMHTMLDocument> doc = do_QueryReferent(mDocWeak);
1.1971 + NS_ENSURE_TRUE(doc, NS_ERROR_NOT_INITIALIZED);
1.1972 +
1.1973 + nsCOMPtr<nsIDOMHTMLElement>bodyElem;
1.1974 + doc->GetBody(getter_AddRefs(bodyElem));
1.1975 + nsCOMPtr<nsIContent> content = do_QueryInterface(bodyElem);
1.1976 + if (content)
1.1977 + content->List();
1.1978 +#endif
1.1979 + return NS_OK;
1.1980 +}
1.1981 +
1.1982 +
1.1983 +NS_IMETHODIMP
1.1984 +nsEditor::DebugUnitTests(int32_t *outNumTests, int32_t *outNumTestsFailed)
1.1985 +{
1.1986 +#ifdef DEBUG
1.1987 + NS_NOTREACHED("This should never get called. Overridden by subclasses");
1.1988 +#endif
1.1989 + return NS_OK;
1.1990 +}
1.1991 +
1.1992 +
1.1993 +bool
1.1994 +nsEditor::ArePreservingSelection()
1.1995 +{
1.1996 + return !(mSavedSel.IsEmpty());
1.1997 +}
1.1998 +
1.1999 +void
1.2000 +nsEditor::PreserveSelectionAcrossActions(Selection* aSel)
1.2001 +{
1.2002 + mSavedSel.SaveSelection(aSel);
1.2003 + mRangeUpdater.RegisterSelectionState(mSavedSel);
1.2004 +}
1.2005 +
1.2006 +nsresult
1.2007 +nsEditor::RestorePreservedSelection(nsISelection *aSel)
1.2008 +{
1.2009 + if (mSavedSel.IsEmpty()) return NS_ERROR_FAILURE;
1.2010 + mSavedSel.RestoreSelection(aSel);
1.2011 + StopPreservingSelection();
1.2012 + return NS_OK;
1.2013 +}
1.2014 +
1.2015 +void
1.2016 +nsEditor::StopPreservingSelection()
1.2017 +{
1.2018 + mRangeUpdater.DropSelectionState(mSavedSel);
1.2019 + mSavedSel.MakeEmpty();
1.2020 +}
1.2021 +
1.2022 +void
1.2023 +nsEditor::EnsureComposition(mozilla::WidgetGUIEvent* aEvent)
1.2024 +{
1.2025 + if (mComposition) {
1.2026 + return;
1.2027 + }
1.2028 + // The compositionstart event must cause creating new TextComposition
1.2029 + // instance at being dispatched by IMEStateManager.
1.2030 + mComposition = IMEStateManager::GetTextCompositionFor(aEvent);
1.2031 + if (!mComposition) {
1.2032 + MOZ_CRASH("IMEStateManager doesn't return proper composition");
1.2033 + }
1.2034 + mComposition->StartHandlingComposition(this);
1.2035 +}
1.2036 +
1.2037 +nsresult
1.2038 +nsEditor::BeginIMEComposition(WidgetCompositionEvent* aCompositionEvent)
1.2039 +{
1.2040 + MOZ_ASSERT(!mComposition, "There is composition already");
1.2041 + EnsureComposition(aCompositionEvent);
1.2042 + if (mPhonetic) {
1.2043 + mPhonetic->Truncate(0);
1.2044 + }
1.2045 + return NS_OK;
1.2046 +}
1.2047 +
1.2048 +void
1.2049 +nsEditor::EndIMEComposition()
1.2050 +{
1.2051 + NS_ENSURE_TRUE_VOID(mComposition); // nothing to do
1.2052 +
1.2053 + // commit the IME transaction..we can get at it via the transaction mgr.
1.2054 + // Note that this means IME won't work without an undo stack!
1.2055 + if (mTxnMgr) {
1.2056 + nsCOMPtr<nsITransaction> txn = mTxnMgr->PeekUndoStack();
1.2057 + nsCOMPtr<nsIAbsorbingTransaction> plcTxn = do_QueryInterface(txn);
1.2058 + if (plcTxn) {
1.2059 + DebugOnly<nsresult> rv = plcTxn->Commit();
1.2060 + NS_ASSERTION(NS_SUCCEEDED(rv),
1.2061 + "nsIAbsorbingTransaction::Commit() failed");
1.2062 + }
1.2063 + }
1.2064 +
1.2065 + /* reset the data we need to construct a transaction */
1.2066 + mIMETextNode = nullptr;
1.2067 + mIMETextOffset = 0;
1.2068 + mComposition->EndHandlingComposition(this);
1.2069 + mComposition = nullptr;
1.2070 +
1.2071 + // notify editor observers of action
1.2072 + NotifyEditorObservers();
1.2073 +}
1.2074 +
1.2075 +
1.2076 +NS_IMETHODIMP
1.2077 +nsEditor::GetPhonetic(nsAString& aPhonetic)
1.2078 +{
1.2079 + if (mPhonetic)
1.2080 + aPhonetic = *mPhonetic;
1.2081 + else
1.2082 + aPhonetic.Truncate(0);
1.2083 +
1.2084 + return NS_OK;
1.2085 +}
1.2086 +
1.2087 +NS_IMETHODIMP
1.2088 +nsEditor::ForceCompositionEnd()
1.2089 +{
1.2090 + nsCOMPtr<nsIPresShell> ps = GetPresShell();
1.2091 + if (!ps) {
1.2092 + return NS_ERROR_NOT_AVAILABLE;
1.2093 + }
1.2094 + nsPresContext* pc = ps->GetPresContext();
1.2095 + if (!pc) {
1.2096 + return NS_ERROR_NOT_AVAILABLE;
1.2097 + }
1.2098 +
1.2099 + if (!mComposition) {
1.2100 + // XXXmnakano see bug 558976, ResetInputState() has two meaning which are
1.2101 + // "commit the composition" and "cursor is moved". This method name is
1.2102 + // "ForceCompositionEnd", so, ResetInputState() should be used only for the
1.2103 + // former here. However, ResetInputState() is also used for the latter here
1.2104 + // because even if we don't have composition, we call ResetInputState() on
1.2105 + // Linux. Currently, nsGtkIMModule can know the timing of the cursor move,
1.2106 + // so, the latter meaning should be gone.
1.2107 + // XXX This may commit a composition in another editor.
1.2108 + return IMEStateManager::NotifyIME(NOTIFY_IME_OF_CURSOR_POS_CHANGED, pc);
1.2109 + }
1.2110 +
1.2111 + return IMEStateManager::NotifyIME(REQUEST_TO_COMMIT_COMPOSITION, pc);
1.2112 +}
1.2113 +
1.2114 +NS_IMETHODIMP
1.2115 +nsEditor::GetPreferredIMEState(IMEState *aState)
1.2116 +{
1.2117 + NS_ENSURE_ARG_POINTER(aState);
1.2118 + aState->mEnabled = IMEState::ENABLED;
1.2119 + aState->mOpen = IMEState::DONT_CHANGE_OPEN_STATE;
1.2120 +
1.2121 + if (IsReadonly() || IsDisabled()) {
1.2122 + aState->mEnabled = IMEState::DISABLED;
1.2123 + return NS_OK;
1.2124 + }
1.2125 +
1.2126 + nsCOMPtr<nsIContent> content = GetRoot();
1.2127 + NS_ENSURE_TRUE(content, NS_ERROR_FAILURE);
1.2128 +
1.2129 + nsIFrame* frame = content->GetPrimaryFrame();
1.2130 + NS_ENSURE_TRUE(frame, NS_ERROR_FAILURE);
1.2131 +
1.2132 + switch (frame->StyleUIReset()->mIMEMode) {
1.2133 + case NS_STYLE_IME_MODE_AUTO:
1.2134 + if (IsPasswordEditor())
1.2135 + aState->mEnabled = IMEState::PASSWORD;
1.2136 + break;
1.2137 + case NS_STYLE_IME_MODE_DISABLED:
1.2138 + // we should use password state for |ime-mode: disabled;|.
1.2139 + aState->mEnabled = IMEState::PASSWORD;
1.2140 + break;
1.2141 + case NS_STYLE_IME_MODE_ACTIVE:
1.2142 + aState->mOpen = IMEState::OPEN;
1.2143 + break;
1.2144 + case NS_STYLE_IME_MODE_INACTIVE:
1.2145 + aState->mOpen = IMEState::CLOSED;
1.2146 + break;
1.2147 + }
1.2148 +
1.2149 + return NS_OK;
1.2150 +}
1.2151 +
1.2152 +NS_IMETHODIMP
1.2153 +nsEditor::GetComposing(bool* aResult)
1.2154 +{
1.2155 + NS_ENSURE_ARG_POINTER(aResult);
1.2156 + *aResult = IsIMEComposing();
1.2157 + return NS_OK;
1.2158 +}
1.2159 +
1.2160 +
1.2161 +/* Non-interface, public methods */
1.2162 +
1.2163 +NS_IMETHODIMP
1.2164 +nsEditor::GetRootElement(nsIDOMElement **aRootElement)
1.2165 +{
1.2166 + NS_ENSURE_ARG_POINTER(aRootElement);
1.2167 + NS_ENSURE_TRUE(mRootElement, NS_ERROR_NOT_AVAILABLE);
1.2168 + nsCOMPtr<nsIDOMElement> rootElement = do_QueryInterface(mRootElement);
1.2169 + rootElement.forget(aRootElement);
1.2170 + return NS_OK;
1.2171 +}
1.2172 +
1.2173 +
1.2174 +/** All editor operations which alter the doc should be prefaced
1.2175 + * with a call to StartOperation, naming the action and direction */
1.2176 +NS_IMETHODIMP
1.2177 +nsEditor::StartOperation(EditAction opID, nsIEditor::EDirection aDirection)
1.2178 +{
1.2179 + mAction = opID;
1.2180 + mDirection = aDirection;
1.2181 + return NS_OK;
1.2182 +}
1.2183 +
1.2184 +
1.2185 +/** All editor operations which alter the doc should be followed
1.2186 + * with a call to EndOperation */
1.2187 +NS_IMETHODIMP
1.2188 +nsEditor::EndOperation()
1.2189 +{
1.2190 + mAction = EditAction::none;
1.2191 + mDirection = eNone;
1.2192 + return NS_OK;
1.2193 +}
1.2194 +
1.2195 +NS_IMETHODIMP
1.2196 +nsEditor::CloneAttribute(const nsAString & aAttribute,
1.2197 + nsIDOMNode *aDestNode, nsIDOMNode *aSourceNode)
1.2198 +{
1.2199 + NS_ENSURE_TRUE(aDestNode && aSourceNode, NS_ERROR_NULL_POINTER);
1.2200 +
1.2201 + nsCOMPtr<nsIDOMElement> destElement = do_QueryInterface(aDestNode);
1.2202 + nsCOMPtr<nsIDOMElement> sourceElement = do_QueryInterface(aSourceNode);
1.2203 + NS_ENSURE_TRUE(destElement && sourceElement, NS_ERROR_NO_INTERFACE);
1.2204 +
1.2205 + nsAutoString attrValue;
1.2206 + bool isAttrSet;
1.2207 + nsresult rv = GetAttributeValue(sourceElement,
1.2208 + aAttribute,
1.2209 + attrValue,
1.2210 + &isAttrSet);
1.2211 + NS_ENSURE_SUCCESS(rv, rv);
1.2212 + if (isAttrSet)
1.2213 + rv = SetAttribute(destElement, aAttribute, attrValue);
1.2214 + else
1.2215 + rv = RemoveAttribute(destElement, aAttribute);
1.2216 +
1.2217 + return rv;
1.2218 +}
1.2219 +
1.2220 +// Objects must be DOM elements
1.2221 +NS_IMETHODIMP
1.2222 +nsEditor::CloneAttributes(nsIDOMNode *aDestNode, nsIDOMNode *aSourceNode)
1.2223 +{
1.2224 + NS_ENSURE_TRUE(aDestNode && aSourceNode, NS_ERROR_NULL_POINTER);
1.2225 +
1.2226 + nsCOMPtr<nsIDOMElement> destElement = do_QueryInterface(aDestNode);
1.2227 + nsCOMPtr<nsIDOMElement> sourceElement = do_QueryInterface(aSourceNode);
1.2228 + NS_ENSURE_TRUE(destElement && sourceElement, NS_ERROR_NO_INTERFACE);
1.2229 +
1.2230 + nsCOMPtr<nsIDOMMozNamedAttrMap> sourceAttributes;
1.2231 + sourceElement->GetAttributes(getter_AddRefs(sourceAttributes));
1.2232 + nsCOMPtr<nsIDOMMozNamedAttrMap> destAttributes;
1.2233 + destElement->GetAttributes(getter_AddRefs(destAttributes));
1.2234 + NS_ENSURE_TRUE(sourceAttributes && destAttributes, NS_ERROR_FAILURE);
1.2235 +
1.2236 + nsAutoEditBatch beginBatching(this);
1.2237 +
1.2238 + // Use transaction system for undo only if destination
1.2239 + // is already in the document
1.2240 + nsCOMPtr<nsIDOMNode> p = aDestNode;
1.2241 + nsCOMPtr<nsIDOMNode> rootNode = do_QueryInterface(GetRoot());
1.2242 + NS_ENSURE_TRUE(rootNode, NS_ERROR_NULL_POINTER);
1.2243 + bool destInBody = true;
1.2244 + while (p && p != rootNode)
1.2245 + {
1.2246 + nsCOMPtr<nsIDOMNode> tmp;
1.2247 + if (NS_FAILED(p->GetParentNode(getter_AddRefs(tmp))) || !tmp)
1.2248 + {
1.2249 + destInBody = false;
1.2250 + break;
1.2251 + }
1.2252 + p = tmp;
1.2253 + }
1.2254 +
1.2255 + uint32_t sourceCount;
1.2256 + sourceAttributes->GetLength(&sourceCount);
1.2257 + uint32_t destCount;
1.2258 + destAttributes->GetLength(&destCount);
1.2259 + nsCOMPtr<nsIDOMAttr> attr;
1.2260 +
1.2261 + // Clear existing attributes
1.2262 + for (uint32_t i = 0; i < destCount; i++) {
1.2263 + // always remove item number 0 (first item in list)
1.2264 + if (NS_SUCCEEDED(destAttributes->Item(0, getter_AddRefs(attr))) && attr) {
1.2265 + nsString str;
1.2266 + if (NS_SUCCEEDED(attr->GetName(str))) {
1.2267 + if (destInBody) {
1.2268 + RemoveAttribute(destElement, str);
1.2269 + } else {
1.2270 + destElement->RemoveAttribute(str);
1.2271 + }
1.2272 + }
1.2273 + }
1.2274 + }
1.2275 +
1.2276 + nsresult result = NS_OK;
1.2277 +
1.2278 + // Set just the attributes that the source element has
1.2279 + for (uint32_t i = 0; i < sourceCount; i++)
1.2280 + {
1.2281 + if (NS_SUCCEEDED(sourceAttributes->Item(i, getter_AddRefs(attr))) && attr) {
1.2282 + nsString sourceAttrName;
1.2283 + if (NS_SUCCEEDED(attr->GetName(sourceAttrName))) {
1.2284 + nsString sourceAttrValue;
1.2285 + /* Presence of an attribute in the named node map indicates that it was
1.2286 + * set on the element even if it has no value.
1.2287 + */
1.2288 + if (NS_SUCCEEDED(attr->GetValue(sourceAttrValue))) {
1.2289 + if (destInBody) {
1.2290 + result = SetAttributeOrEquivalent(destElement, sourceAttrName, sourceAttrValue, false);
1.2291 + } else {
1.2292 + // the element is not inserted in the document yet, we don't want to put a
1.2293 + // transaction on the UndoStack
1.2294 + result = SetAttributeOrEquivalent(destElement, sourceAttrName, sourceAttrValue, true);
1.2295 + }
1.2296 + } else {
1.2297 + // Do we ever get here?
1.2298 +#if DEBUG_cmanske
1.2299 + printf("Attribute in sourceAttribute has empty value in nsEditor::CloneAttributes()\n");
1.2300 +#endif
1.2301 + }
1.2302 + }
1.2303 + }
1.2304 + }
1.2305 + return result;
1.2306 +}
1.2307 +
1.2308 +
1.2309 +NS_IMETHODIMP nsEditor::ScrollSelectionIntoView(bool aScrollToAnchor)
1.2310 +{
1.2311 + nsCOMPtr<nsISelectionController> selCon;
1.2312 + if (NS_SUCCEEDED(GetSelectionController(getter_AddRefs(selCon))) && selCon)
1.2313 + {
1.2314 + int16_t region = nsISelectionController::SELECTION_FOCUS_REGION;
1.2315 +
1.2316 + if (aScrollToAnchor)
1.2317 + region = nsISelectionController::SELECTION_ANCHOR_REGION;
1.2318 +
1.2319 + selCon->ScrollSelectionIntoView(nsISelectionController::SELECTION_NORMAL,
1.2320 + region, nsISelectionController::SCROLL_OVERFLOW_HIDDEN);
1.2321 + }
1.2322 +
1.2323 + return NS_OK;
1.2324 +}
1.2325 +
1.2326 +NS_IMETHODIMP
1.2327 +nsEditor::InsertTextImpl(const nsAString& aStringToInsert,
1.2328 + nsCOMPtr<nsIDOMNode>* aInOutNode,
1.2329 + int32_t* aInOutOffset,
1.2330 + nsIDOMDocument* aDoc)
1.2331 +{
1.2332 + // NOTE: caller *must* have already used nsAutoTxnsConserveSelection
1.2333 + // stack-based class to turn off txn selection updating. Caller also turned
1.2334 + // on rules sniffing if desired.
1.2335 +
1.2336 + NS_ENSURE_TRUE(aInOutNode && *aInOutNode && aInOutOffset && aDoc,
1.2337 + NS_ERROR_NULL_POINTER);
1.2338 + if (!mComposition && aStringToInsert.IsEmpty()) {
1.2339 + return NS_OK;
1.2340 + }
1.2341 +
1.2342 + nsCOMPtr<nsINode> node = do_QueryInterface(*aInOutNode);
1.2343 + NS_ENSURE_STATE(node);
1.2344 + uint32_t offset = static_cast<uint32_t>(*aInOutOffset);
1.2345 +
1.2346 + if (!node->IsNodeOfType(nsINode::eTEXT) && IsPlaintextEditor()) {
1.2347 + nsCOMPtr<nsINode> root = GetRoot();
1.2348 + // In some cases, node is the anonymous DIV, and offset is 0. To avoid
1.2349 + // injecting unneeded text nodes, we first look to see if we have one
1.2350 + // available. In that case, we'll just adjust node and offset accordingly.
1.2351 + if (node == root && offset == 0 && node->HasChildren() &&
1.2352 + node->GetFirstChild()->IsNodeOfType(nsINode::eTEXT)) {
1.2353 + node = node->GetFirstChild();
1.2354 + }
1.2355 + // In some other cases, node is the anonymous DIV, and offset points to the
1.2356 + // terminating mozBR. In that case, we'll adjust aInOutNode and
1.2357 + // aInOutOffset to the preceding text node, if any.
1.2358 + if (node == root && offset > 0 && node->GetChildAt(offset - 1) &&
1.2359 + node->GetChildAt(offset - 1)->IsNodeOfType(nsINode::eTEXT)) {
1.2360 + node = node->GetChildAt(offset - 1);
1.2361 + offset = node->Length();
1.2362 + }
1.2363 + // Sometimes, node is the mozBR element itself. In that case, we'll adjust
1.2364 + // the insertion point to the previous text node, if one exists, or to the
1.2365 + // parent anonymous DIV.
1.2366 + if (nsTextEditUtils::IsMozBR(node) && offset == 0) {
1.2367 + if (node->GetPreviousSibling() &&
1.2368 + node->GetPreviousSibling()->IsNodeOfType(nsINode::eTEXT)) {
1.2369 + node = node->GetPreviousSibling();
1.2370 + offset = node->Length();
1.2371 + } else if (node->GetParentNode() && node->GetParentNode() == root) {
1.2372 + node = node->GetParentNode();
1.2373 + }
1.2374 + }
1.2375 + }
1.2376 +
1.2377 + nsresult res;
1.2378 + if (mComposition) {
1.2379 + if (!node->IsNodeOfType(nsINode::eTEXT)) {
1.2380 + // create a text node
1.2381 + nsCOMPtr<nsIDocument> doc = do_QueryInterface(aDoc);
1.2382 + NS_ENSURE_STATE(doc);
1.2383 + nsRefPtr<nsTextNode> newNode = doc->CreateTextNode(EmptyString());
1.2384 + // then we insert it into the dom tree
1.2385 + res = InsertNode(newNode->AsDOMNode(), node->AsDOMNode(), offset);
1.2386 + NS_ENSURE_SUCCESS(res, res);
1.2387 + node = newNode;
1.2388 + offset = 0;
1.2389 + }
1.2390 + nsCOMPtr<nsIDOMCharacterData> charDataNode = do_QueryInterface(node);
1.2391 + NS_ENSURE_STATE(charDataNode);
1.2392 + res = InsertTextIntoTextNodeImpl(aStringToInsert, charDataNode, offset);
1.2393 + NS_ENSURE_SUCCESS(res, res);
1.2394 + offset += aStringToInsert.Length();
1.2395 + } else {
1.2396 + if (node->IsNodeOfType(nsINode::eTEXT)) {
1.2397 + // we are inserting text into an existing text node.
1.2398 + nsCOMPtr<nsIDOMCharacterData> charDataNode = do_QueryInterface(node);
1.2399 + NS_ENSURE_STATE(charDataNode);
1.2400 + res = InsertTextIntoTextNodeImpl(aStringToInsert, charDataNode, offset);
1.2401 + NS_ENSURE_SUCCESS(res, res);
1.2402 + offset += aStringToInsert.Length();
1.2403 + } else {
1.2404 + // we are inserting text into a non-text node. first we have to create a
1.2405 + // textnode (this also populates it with the text)
1.2406 + nsCOMPtr<nsIDocument> doc = do_QueryInterface(aDoc);
1.2407 + NS_ENSURE_STATE(doc);
1.2408 + nsRefPtr<nsTextNode> newNode = doc->CreateTextNode(aStringToInsert);
1.2409 + // then we insert it into the dom tree
1.2410 + res = InsertNode(newNode->AsDOMNode(), node->AsDOMNode(), offset);
1.2411 + NS_ENSURE_SUCCESS(res, res);
1.2412 + node = newNode;
1.2413 + offset = aStringToInsert.Length();
1.2414 + }
1.2415 + }
1.2416 +
1.2417 + *aInOutNode = node->AsDOMNode();
1.2418 + *aInOutOffset = static_cast<int32_t>(offset);
1.2419 + return NS_OK;
1.2420 +}
1.2421 +
1.2422 +
1.2423 +nsresult nsEditor::InsertTextIntoTextNodeImpl(const nsAString& aStringToInsert,
1.2424 + nsIDOMCharacterData *aTextNode,
1.2425 + int32_t aOffset,
1.2426 + bool aSuppressIME)
1.2427 +{
1.2428 + nsRefPtr<EditTxn> txn;
1.2429 + nsresult result = NS_OK;
1.2430 + bool isIMETransaction = false;
1.2431 + // aSuppressIME is used when editor must insert text, yet this text is not
1.2432 + // part of current ime operation. example: adjusting whitespace around an ime insertion.
1.2433 + if (mComposition && !aSuppressIME) {
1.2434 + if (!mIMETextNode) {
1.2435 + mIMETextNode = aTextNode;
1.2436 + mIMETextOffset = aOffset;
1.2437 + }
1.2438 + // Modify mPhonetic with raw text input clauses.
1.2439 + const TextRangeArray* ranges = mComposition->GetRanges();
1.2440 + for (uint32_t i = 0; i < (ranges ? ranges->Length() : 0); ++i) {
1.2441 + const TextRange& textRange = ranges->ElementAt(i);
1.2442 + if (!textRange.Length() ||
1.2443 + textRange.mRangeType != NS_TEXTRANGE_RAWINPUT) {
1.2444 + continue;
1.2445 + }
1.2446 + if (!mPhonetic) {
1.2447 + mPhonetic = new nsString();
1.2448 + }
1.2449 + nsAutoString stringToInsert(aStringToInsert);
1.2450 + stringToInsert.Mid(*mPhonetic,
1.2451 + textRange.mStartOffset, textRange.Length());
1.2452 + }
1.2453 +
1.2454 + nsRefPtr<IMETextTxn> imeTxn;
1.2455 + result = CreateTxnForIMEText(aStringToInsert, getter_AddRefs(imeTxn));
1.2456 + txn = imeTxn;
1.2457 + isIMETransaction = true;
1.2458 + }
1.2459 + else
1.2460 + {
1.2461 + nsRefPtr<InsertTextTxn> insertTxn;
1.2462 + result = CreateTxnForInsertText(aStringToInsert, aTextNode, aOffset,
1.2463 + getter_AddRefs(insertTxn));
1.2464 + txn = insertTxn;
1.2465 + }
1.2466 + NS_ENSURE_SUCCESS(result, result);
1.2467 +
1.2468 + // let listeners know what's up
1.2469 + int32_t i;
1.2470 + for (i = 0; i < mActionListeners.Count(); i++)
1.2471 + mActionListeners[i]->WillInsertText(aTextNode, aOffset, aStringToInsert);
1.2472 +
1.2473 + // XXX we may not need these view batches anymore. This is handled at a higher level now I believe
1.2474 + BeginUpdateViewBatch();
1.2475 + result = DoTransaction(txn);
1.2476 + EndUpdateViewBatch();
1.2477 +
1.2478 + mRangeUpdater.SelAdjInsertText(aTextNode, aOffset, aStringToInsert);
1.2479 +
1.2480 + // let listeners know what happened
1.2481 + for (i = 0; i < mActionListeners.Count(); i++)
1.2482 + mActionListeners[i]->DidInsertText(aTextNode, aOffset, aStringToInsert, result);
1.2483 +
1.2484 + // Added some cruft here for bug 43366. Layout was crashing because we left an
1.2485 + // empty text node lying around in the document. So I delete empty text nodes
1.2486 + // caused by IME. I have to mark the IME transaction as "fixed", which means
1.2487 + // that furure ime txns won't merge with it. This is because we don't want
1.2488 + // future ime txns trying to put their text into a node that is no longer in
1.2489 + // the document. This does not break undo/redo, because all these txns are
1.2490 + // wrapped in a parent PlaceHolder txn, and placeholder txns are already
1.2491 + // savvy to having multiple ime txns inside them.
1.2492 +
1.2493 + // delete empty ime text node if there is one
1.2494 + if (isIMETransaction && mIMETextNode)
1.2495 + {
1.2496 + uint32_t len;
1.2497 + mIMETextNode->GetLength(&len);
1.2498 + if (!len)
1.2499 + {
1.2500 + DeleteNode(mIMETextNode);
1.2501 + mIMETextNode = nullptr;
1.2502 + static_cast<IMETextTxn*>(txn.get())->MarkFixed(); // mark the ime txn "fixed"
1.2503 + }
1.2504 + }
1.2505 +
1.2506 + return result;
1.2507 +}
1.2508 +
1.2509 +
1.2510 +NS_IMETHODIMP nsEditor::SelectEntireDocument(nsISelection *aSelection)
1.2511 +{
1.2512 + if (!aSelection) { return NS_ERROR_NULL_POINTER; }
1.2513 +
1.2514 + nsCOMPtr<nsIDOMElement> rootElement = do_QueryInterface(GetRoot());
1.2515 + if (!rootElement) { return NS_ERROR_NOT_INITIALIZED; }
1.2516 +
1.2517 + return aSelection->SelectAllChildren(rootElement);
1.2518 +}
1.2519 +
1.2520 +
1.2521 +nsINode*
1.2522 +nsEditor::GetFirstEditableNode(nsINode* aRoot)
1.2523 +{
1.2524 + MOZ_ASSERT(aRoot);
1.2525 +
1.2526 + nsIContent* node = GetLeftmostChild(aRoot);
1.2527 + if (node && !IsEditable(node)) {
1.2528 + node = GetNextNode(node, /* aEditableNode = */ true);
1.2529 + }
1.2530 +
1.2531 + return (node != aRoot) ? node : nullptr;
1.2532 +}
1.2533 +
1.2534 +
1.2535 +NS_IMETHODIMP
1.2536 +nsEditor::NotifyDocumentListeners(TDocumentListenerNotification aNotificationType)
1.2537 +{
1.2538 + int32_t numListeners = mDocStateListeners.Count();
1.2539 + if (!numListeners) // maybe there just aren't any.
1.2540 + return NS_OK;
1.2541 +
1.2542 + nsCOMArray<nsIDocumentStateListener> listeners(mDocStateListeners);
1.2543 + nsresult rv = NS_OK;
1.2544 + int32_t i;
1.2545 +
1.2546 + switch (aNotificationType)
1.2547 + {
1.2548 + case eDocumentCreated:
1.2549 + for (i = 0; i < numListeners;i++)
1.2550 + {
1.2551 + rv = listeners[i]->NotifyDocumentCreated();
1.2552 + if (NS_FAILED(rv))
1.2553 + break;
1.2554 + }
1.2555 + break;
1.2556 +
1.2557 + case eDocumentToBeDestroyed:
1.2558 + for (i = 0; i < numListeners;i++)
1.2559 + {
1.2560 + rv = listeners[i]->NotifyDocumentWillBeDestroyed();
1.2561 + if (NS_FAILED(rv))
1.2562 + break;
1.2563 + }
1.2564 + break;
1.2565 +
1.2566 + case eDocumentStateChanged:
1.2567 + {
1.2568 + bool docIsDirty;
1.2569 + rv = GetDocumentModified(&docIsDirty);
1.2570 + NS_ENSURE_SUCCESS(rv, rv);
1.2571 +
1.2572 + if (static_cast<int8_t>(docIsDirty) == mDocDirtyState)
1.2573 + return NS_OK;
1.2574 +
1.2575 + mDocDirtyState = docIsDirty;
1.2576 +
1.2577 + for (i = 0; i < numListeners;i++)
1.2578 + {
1.2579 + rv = listeners[i]->NotifyDocumentStateChanged(mDocDirtyState);
1.2580 + if (NS_FAILED(rv))
1.2581 + break;
1.2582 + }
1.2583 + }
1.2584 + break;
1.2585 +
1.2586 + default:
1.2587 + NS_NOTREACHED("Unknown notification");
1.2588 + }
1.2589 +
1.2590 + return rv;
1.2591 +}
1.2592 +
1.2593 +
1.2594 +NS_IMETHODIMP nsEditor::CreateTxnForInsertText(const nsAString & aStringToInsert,
1.2595 + nsIDOMCharacterData *aTextNode,
1.2596 + int32_t aOffset,
1.2597 + InsertTextTxn ** aTxn)
1.2598 +{
1.2599 + NS_ENSURE_TRUE(aTextNode && aTxn, NS_ERROR_NULL_POINTER);
1.2600 + nsresult rv;
1.2601 +
1.2602 + nsRefPtr<InsertTextTxn> txn = new InsertTextTxn();
1.2603 + rv = txn->Init(aTextNode, aOffset, aStringToInsert, this);
1.2604 + if (NS_SUCCEEDED(rv))
1.2605 + {
1.2606 + txn.forget(aTxn);
1.2607 + }
1.2608 +
1.2609 + return rv;
1.2610 +}
1.2611 +
1.2612 +
1.2613 +NS_IMETHODIMP nsEditor::DeleteText(nsIDOMCharacterData *aElement,
1.2614 + uint32_t aOffset,
1.2615 + uint32_t aLength)
1.2616 +{
1.2617 + nsRefPtr<DeleteTextTxn> txn;
1.2618 + nsresult result = CreateTxnForDeleteText(aElement, aOffset, aLength,
1.2619 + getter_AddRefs(txn));
1.2620 + nsAutoRules beginRulesSniffing(this, EditAction::deleteText, nsIEditor::ePrevious);
1.2621 + if (NS_SUCCEEDED(result))
1.2622 + {
1.2623 + // let listeners know what's up
1.2624 + int32_t i;
1.2625 + for (i = 0; i < mActionListeners.Count(); i++)
1.2626 + mActionListeners[i]->WillDeleteText(aElement, aOffset, aLength);
1.2627 +
1.2628 + result = DoTransaction(txn);
1.2629 +
1.2630 + // let listeners know what happened
1.2631 + for (i = 0; i < mActionListeners.Count(); i++)
1.2632 + mActionListeners[i]->DidDeleteText(aElement, aOffset, aLength, result);
1.2633 + }
1.2634 + return result;
1.2635 +}
1.2636 +
1.2637 +
1.2638 +nsresult
1.2639 +nsEditor::CreateTxnForDeleteText(nsIDOMCharacterData* aElement,
1.2640 + uint32_t aOffset,
1.2641 + uint32_t aLength,
1.2642 + DeleteTextTxn** aTxn)
1.2643 +{
1.2644 + NS_ENSURE_TRUE(aElement, NS_ERROR_NULL_POINTER);
1.2645 +
1.2646 + nsRefPtr<DeleteTextTxn> txn = new DeleteTextTxn();
1.2647 +
1.2648 + nsresult res = txn->Init(this, aElement, aOffset, aLength, &mRangeUpdater);
1.2649 + NS_ENSURE_SUCCESS(res, res);
1.2650 +
1.2651 + txn.forget(aTxn);
1.2652 + return NS_OK;
1.2653 +}
1.2654 +
1.2655 +
1.2656 +
1.2657 +
1.2658 +NS_IMETHODIMP nsEditor::CreateTxnForSplitNode(nsIDOMNode *aNode,
1.2659 + uint32_t aOffset,
1.2660 + SplitElementTxn **aTxn)
1.2661 +{
1.2662 + NS_ENSURE_TRUE(aNode, NS_ERROR_NULL_POINTER);
1.2663 +
1.2664 + nsRefPtr<SplitElementTxn> txn = new SplitElementTxn();
1.2665 +
1.2666 + nsresult rv = txn->Init(this, aNode, aOffset);
1.2667 + if (NS_SUCCEEDED(rv))
1.2668 + {
1.2669 + txn.forget(aTxn);
1.2670 + }
1.2671 +
1.2672 + return rv;
1.2673 +}
1.2674 +
1.2675 +NS_IMETHODIMP nsEditor::CreateTxnForJoinNode(nsIDOMNode *aLeftNode,
1.2676 + nsIDOMNode *aRightNode,
1.2677 + JoinElementTxn **aTxn)
1.2678 +{
1.2679 + NS_ENSURE_TRUE(aLeftNode && aRightNode, NS_ERROR_NULL_POINTER);
1.2680 +
1.2681 + nsRefPtr<JoinElementTxn> txn = new JoinElementTxn();
1.2682 +
1.2683 + nsresult rv = txn->Init(this, aLeftNode, aRightNode);
1.2684 + if (NS_SUCCEEDED(rv))
1.2685 + {
1.2686 + txn.forget(aTxn);
1.2687 + }
1.2688 +
1.2689 + return rv;
1.2690 +}
1.2691 +
1.2692 +
1.2693 +// END nsEditor core implementation
1.2694 +
1.2695 +
1.2696 +// BEGIN nsEditor public helper methods
1.2697 +
1.2698 +nsresult
1.2699 +nsEditor::SplitNodeImpl(nsIDOMNode * aExistingRightNode,
1.2700 + int32_t aOffset,
1.2701 + nsIDOMNode* aNewLeftNode,
1.2702 + nsIDOMNode* aParent)
1.2703 +{
1.2704 + NS_ASSERTION(((nullptr!=aExistingRightNode) &&
1.2705 + (nullptr!=aNewLeftNode) &&
1.2706 + (nullptr!=aParent)),
1.2707 + "null arg");
1.2708 + nsresult result;
1.2709 + if ((nullptr!=aExistingRightNode) &&
1.2710 + (nullptr!=aNewLeftNode) &&
1.2711 + (nullptr!=aParent))
1.2712 + {
1.2713 + // get selection
1.2714 + nsCOMPtr<nsISelection> selection;
1.2715 + result = GetSelection(getter_AddRefs(selection));
1.2716 + NS_ENSURE_SUCCESS(result, result);
1.2717 + NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
1.2718 +
1.2719 + // remember some selection points
1.2720 + nsCOMPtr<nsIDOMNode> selStartNode, selEndNode;
1.2721 + int32_t selStartOffset, selEndOffset;
1.2722 + result = GetStartNodeAndOffset(selection, getter_AddRefs(selStartNode), &selStartOffset);
1.2723 + if (NS_FAILED(result)) selStartNode = nullptr; // if selection is cleared, remember that
1.2724 + result = GetEndNodeAndOffset(selection, getter_AddRefs(selEndNode), &selEndOffset);
1.2725 + if (NS_FAILED(result)) selStartNode = nullptr; // if selection is cleared, remember that
1.2726 +
1.2727 + nsCOMPtr<nsIDOMNode> resultNode;
1.2728 + result = aParent->InsertBefore(aNewLeftNode, aExistingRightNode, getter_AddRefs(resultNode));
1.2729 + //printf(" after insert\n"); content->List(); // DEBUG
1.2730 + if (NS_SUCCEEDED(result))
1.2731 + {
1.2732 + // split the children between the 2 nodes
1.2733 + // at this point, aExistingRightNode has all the children
1.2734 + // move all the children whose index is < aOffset to aNewLeftNode
1.2735 + if (0<=aOffset) // don't bother unless we're going to move at least one child
1.2736 + {
1.2737 + // if it's a text node, just shuffle around some text
1.2738 + nsCOMPtr<nsIDOMCharacterData> rightNodeAsText( do_QueryInterface(aExistingRightNode) );
1.2739 + nsCOMPtr<nsIDOMCharacterData> leftNodeAsText( do_QueryInterface(aNewLeftNode) );
1.2740 + if (leftNodeAsText && rightNodeAsText)
1.2741 + {
1.2742 + // fix right node
1.2743 + nsAutoString leftText;
1.2744 + rightNodeAsText->SubstringData(0, aOffset, leftText);
1.2745 + rightNodeAsText->DeleteData(0, aOffset);
1.2746 + // fix left node
1.2747 + leftNodeAsText->SetData(leftText);
1.2748 + // moose
1.2749 + }
1.2750 + else
1.2751 + { // otherwise it's an interior node, so shuffle around the children
1.2752 + // go through list backwards so deletes don't interfere with the iteration
1.2753 + nsCOMPtr<nsIDOMNodeList> childNodes;
1.2754 + result = aExistingRightNode->GetChildNodes(getter_AddRefs(childNodes));
1.2755 + if ((NS_SUCCEEDED(result)) && (childNodes))
1.2756 + {
1.2757 + int32_t i=aOffset-1;
1.2758 + for ( ; ((NS_SUCCEEDED(result)) && (0<=i)); i--)
1.2759 + {
1.2760 + nsCOMPtr<nsIDOMNode> childNode;
1.2761 + result = childNodes->Item(i, getter_AddRefs(childNode));
1.2762 + if ((NS_SUCCEEDED(result)) && (childNode))
1.2763 + {
1.2764 + result = aExistingRightNode->RemoveChild(childNode, getter_AddRefs(resultNode));
1.2765 + //printf(" after remove\n"); content->List(); // DEBUG
1.2766 + if (NS_SUCCEEDED(result))
1.2767 + {
1.2768 + nsCOMPtr<nsIDOMNode> firstChild;
1.2769 + aNewLeftNode->GetFirstChild(getter_AddRefs(firstChild));
1.2770 + result = aNewLeftNode->InsertBefore(childNode, firstChild, getter_AddRefs(resultNode));
1.2771 + //printf(" after append\n"); content->List(); // DEBUG
1.2772 + }
1.2773 + }
1.2774 + }
1.2775 + }
1.2776 + }
1.2777 + // handle selection
1.2778 + nsCOMPtr<nsIPresShell> ps = GetPresShell();
1.2779 + if (ps)
1.2780 + ps->FlushPendingNotifications(Flush_Frames);
1.2781 +
1.2782 + if (GetShouldTxnSetSelection())
1.2783 + {
1.2784 + // editor wants us to set selection at split point
1.2785 + selection->Collapse(aNewLeftNode, aOffset);
1.2786 + }
1.2787 + else if (selStartNode)
1.2788 + {
1.2789 + // else adjust the selection if needed. if selStartNode is null, then there was no selection.
1.2790 + // HACK: this is overly simplified - multi-range selections need more work than this
1.2791 + if (selStartNode.get() == aExistingRightNode)
1.2792 + {
1.2793 + if (selStartOffset < aOffset)
1.2794 + {
1.2795 + selStartNode = aNewLeftNode;
1.2796 + }
1.2797 + else
1.2798 + {
1.2799 + selStartOffset -= aOffset;
1.2800 + }
1.2801 + }
1.2802 + if (selEndNode.get() == aExistingRightNode)
1.2803 + {
1.2804 + if (selEndOffset < aOffset)
1.2805 + {
1.2806 + selEndNode = aNewLeftNode;
1.2807 + }
1.2808 + else
1.2809 + {
1.2810 + selEndOffset -= aOffset;
1.2811 + }
1.2812 + }
1.2813 + selection->Collapse(selStartNode,selStartOffset);
1.2814 + selection->Extend(selEndNode,selEndOffset);
1.2815 + }
1.2816 + }
1.2817 + }
1.2818 + }
1.2819 + else
1.2820 + result = NS_ERROR_INVALID_ARG;
1.2821 +
1.2822 + return result;
1.2823 +}
1.2824 +
1.2825 +nsresult
1.2826 +nsEditor::JoinNodesImpl(nsINode* aNodeToKeep,
1.2827 + nsINode* aNodeToJoin,
1.2828 + nsINode* aParent)
1.2829 +{
1.2830 + MOZ_ASSERT(aNodeToKeep);
1.2831 + MOZ_ASSERT(aNodeToJoin);
1.2832 + MOZ_ASSERT(aParent);
1.2833 +
1.2834 + nsRefPtr<Selection> selection = GetSelection();
1.2835 + NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
1.2836 +
1.2837 + // remember some selection points
1.2838 + nsCOMPtr<nsINode> selStartNode;
1.2839 + int32_t selStartOffset;
1.2840 + nsresult result = GetStartNodeAndOffset(selection, getter_AddRefs(selStartNode), &selStartOffset);
1.2841 + if (NS_FAILED(result)) {
1.2842 + selStartNode = nullptr;
1.2843 + }
1.2844 +
1.2845 + nsCOMPtr<nsINode> selEndNode;
1.2846 + int32_t selEndOffset;
1.2847 + result = GetEndNodeAndOffset(selection, getter_AddRefs(selEndNode), &selEndOffset);
1.2848 + // Joe or Kin should comment here on why the following line is not a copy/paste error
1.2849 + if (NS_FAILED(result)) {
1.2850 + selStartNode = nullptr;
1.2851 + }
1.2852 +
1.2853 + uint32_t firstNodeLength = aNodeToJoin->Length();
1.2854 +
1.2855 + int32_t joinOffset;
1.2856 + GetNodeLocation(aNodeToJoin, &joinOffset);
1.2857 + int32_t keepOffset;
1.2858 + nsINode* parent = GetNodeLocation(aNodeToKeep, &keepOffset);
1.2859 +
1.2860 + // if selection endpoint is between the nodes, remember it as being
1.2861 + // in the one that is going away instead. This simplifies later selection
1.2862 + // adjustment logic at end of this method.
1.2863 + if (selStartNode) {
1.2864 + if (selStartNode == parent &&
1.2865 + joinOffset < selStartOffset && selStartOffset <= keepOffset) {
1.2866 + selStartNode = aNodeToJoin;
1.2867 + selStartOffset = firstNodeLength;
1.2868 + }
1.2869 + if (selEndNode == parent &&
1.2870 + joinOffset < selEndOffset && selEndOffset <= keepOffset) {
1.2871 + selEndNode = aNodeToJoin;
1.2872 + selEndOffset = firstNodeLength;
1.2873 + }
1.2874 + }
1.2875 +
1.2876 + // ok, ready to do join now.
1.2877 + // if it's a text node, just shuffle around some text
1.2878 + nsCOMPtr<nsIDOMCharacterData> keepNodeAsText( do_QueryInterface(aNodeToKeep) );
1.2879 + nsCOMPtr<nsIDOMCharacterData> joinNodeAsText( do_QueryInterface(aNodeToJoin) );
1.2880 + if (keepNodeAsText && joinNodeAsText) {
1.2881 + nsAutoString rightText;
1.2882 + nsAutoString leftText;
1.2883 + keepNodeAsText->GetData(rightText);
1.2884 + joinNodeAsText->GetData(leftText);
1.2885 + leftText += rightText;
1.2886 + keepNodeAsText->SetData(leftText);
1.2887 + } else {
1.2888 + // otherwise it's an interior node, so shuffle around the children
1.2889 + nsCOMPtr<nsINodeList> childNodes = aNodeToJoin->ChildNodes();
1.2890 + MOZ_ASSERT(childNodes);
1.2891 +
1.2892 + // remember the first child in aNodeToKeep, we'll insert all the children of aNodeToJoin in front of it
1.2893 + // GetFirstChild returns nullptr firstNode if aNodeToKeep has no children, that's ok.
1.2894 + nsCOMPtr<nsIContent> firstNode = aNodeToKeep->GetFirstChild();
1.2895 +
1.2896 + // have to go through the list backwards to keep deletes from interfering with iteration
1.2897 + for (uint32_t i = childNodes->Length(); i > 0; --i) {
1.2898 + nsCOMPtr<nsIContent> childNode = childNodes->Item(i - 1);
1.2899 + if (childNode) {
1.2900 + // prepend children of aNodeToJoin
1.2901 + ErrorResult err;
1.2902 + aNodeToKeep->InsertBefore(*childNode, firstNode, err);
1.2903 + NS_ENSURE_SUCCESS(err.ErrorCode(), err.ErrorCode());
1.2904 + firstNode = childNode.forget();
1.2905 + }
1.2906 + }
1.2907 + }
1.2908 +
1.2909 + // delete the extra node
1.2910 + ErrorResult err;
1.2911 + aParent->RemoveChild(*aNodeToJoin, err);
1.2912 +
1.2913 + if (GetShouldTxnSetSelection()) {
1.2914 + // editor wants us to set selection at join point
1.2915 + selection->Collapse(aNodeToKeep, SafeCast<int32_t>(firstNodeLength));
1.2916 + } else if (selStartNode) {
1.2917 + // and adjust the selection if needed
1.2918 + // HACK: this is overly simplified - multi-range selections need more work than this
1.2919 + bool bNeedToAdjust = false;
1.2920 +
1.2921 + // check to see if we joined nodes where selection starts
1.2922 + if (selStartNode == aNodeToJoin) {
1.2923 + bNeedToAdjust = true;
1.2924 + selStartNode = aNodeToKeep;
1.2925 + } else if (selStartNode == aNodeToKeep) {
1.2926 + bNeedToAdjust = true;
1.2927 + selStartOffset += firstNodeLength;
1.2928 + }
1.2929 +
1.2930 + // check to see if we joined nodes where selection ends
1.2931 + if (selEndNode == aNodeToJoin) {
1.2932 + bNeedToAdjust = true;
1.2933 + selEndNode = aNodeToKeep;
1.2934 + } else if (selEndNode == aNodeToKeep) {
1.2935 + bNeedToAdjust = true;
1.2936 + selEndOffset += firstNodeLength;
1.2937 + }
1.2938 +
1.2939 + // adjust selection if needed
1.2940 + if (bNeedToAdjust) {
1.2941 + selection->Collapse(selStartNode, selStartOffset);
1.2942 + selection->Extend(selEndNode, selEndOffset);
1.2943 + }
1.2944 + }
1.2945 +
1.2946 + return err.ErrorCode();
1.2947 +}
1.2948 +
1.2949 +
1.2950 +int32_t
1.2951 +nsEditor::GetChildOffset(nsIDOMNode* aChild, nsIDOMNode* aParent)
1.2952 +{
1.2953 + MOZ_ASSERT(aChild && aParent);
1.2954 +
1.2955 + nsCOMPtr<nsINode> parent = do_QueryInterface(aParent);
1.2956 + nsCOMPtr<nsINode> child = do_QueryInterface(aChild);
1.2957 + MOZ_ASSERT(parent && child);
1.2958 +
1.2959 + int32_t idx = parent->IndexOf(child);
1.2960 + MOZ_ASSERT(idx != -1);
1.2961 + return idx;
1.2962 +}
1.2963 +
1.2964 +// static
1.2965 +already_AddRefed<nsIDOMNode>
1.2966 +nsEditor::GetNodeLocation(nsIDOMNode* aChild, int32_t* outOffset)
1.2967 +{
1.2968 + MOZ_ASSERT(aChild && outOffset);
1.2969 + NS_ENSURE_TRUE(aChild && outOffset, nullptr);
1.2970 + *outOffset = -1;
1.2971 +
1.2972 + nsCOMPtr<nsIDOMNode> parent;
1.2973 +
1.2974 + MOZ_ALWAYS_TRUE(NS_SUCCEEDED(
1.2975 + aChild->GetParentNode(getter_AddRefs(parent))));
1.2976 + if (parent) {
1.2977 + *outOffset = GetChildOffset(aChild, parent);
1.2978 + }
1.2979 +
1.2980 + return parent.forget();
1.2981 +}
1.2982 +
1.2983 +nsINode*
1.2984 +nsEditor::GetNodeLocation(nsINode* aChild, int32_t* aOffset)
1.2985 +{
1.2986 + MOZ_ASSERT(aChild);
1.2987 + MOZ_ASSERT(aOffset);
1.2988 +
1.2989 + nsINode* parent = aChild->GetParentNode();
1.2990 + if (parent) {
1.2991 + *aOffset = parent->IndexOf(aChild);
1.2992 + MOZ_ASSERT(*aOffset != -1);
1.2993 + } else {
1.2994 + *aOffset = -1;
1.2995 + }
1.2996 + return parent;
1.2997 +}
1.2998 +
1.2999 +// returns the number of things inside aNode.
1.3000 +// If aNode is text, returns number of characters. If not, returns number of children nodes.
1.3001 +nsresult
1.3002 +nsEditor::GetLengthOfDOMNode(nsIDOMNode *aNode, uint32_t &aCount)
1.3003 +{
1.3004 + aCount = 0;
1.3005 + nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
1.3006 + NS_ENSURE_TRUE(node, NS_ERROR_NULL_POINTER);
1.3007 + aCount = node->Length();
1.3008 + return NS_OK;
1.3009 +}
1.3010 +
1.3011 +
1.3012 +nsresult
1.3013 +nsEditor::GetPriorNode(nsIDOMNode *aParentNode,
1.3014 + int32_t aOffset,
1.3015 + bool aEditableNode,
1.3016 + nsCOMPtr<nsIDOMNode> *aResultNode,
1.3017 + bool bNoBlockCrossing)
1.3018 +{
1.3019 + NS_ENSURE_TRUE(aResultNode, NS_ERROR_NULL_POINTER);
1.3020 + *aResultNode = nullptr;
1.3021 +
1.3022 + nsCOMPtr<nsINode> parentNode = do_QueryInterface(aParentNode);
1.3023 + NS_ENSURE_TRUE(parentNode, NS_ERROR_NULL_POINTER);
1.3024 +
1.3025 + *aResultNode = do_QueryInterface(GetPriorNode(parentNode, aOffset,
1.3026 + aEditableNode,
1.3027 + bNoBlockCrossing));
1.3028 + return NS_OK;
1.3029 +}
1.3030 +
1.3031 +nsIContent*
1.3032 +nsEditor::GetPriorNode(nsINode* aParentNode,
1.3033 + int32_t aOffset,
1.3034 + bool aEditableNode,
1.3035 + bool aNoBlockCrossing)
1.3036 +{
1.3037 + MOZ_ASSERT(aParentNode);
1.3038 +
1.3039 + // If we are at the beginning of the node, or it is a text node, then just
1.3040 + // look before it.
1.3041 + if (!aOffset || aParentNode->NodeType() == nsIDOMNode::TEXT_NODE) {
1.3042 + if (aNoBlockCrossing && IsBlockNode(aParentNode)) {
1.3043 + // If we aren't allowed to cross blocks, don't look before this block.
1.3044 + return nullptr;
1.3045 + }
1.3046 + return GetPriorNode(aParentNode, aEditableNode, aNoBlockCrossing);
1.3047 + }
1.3048 +
1.3049 + // else look before the child at 'aOffset'
1.3050 + if (nsIContent* child = aParentNode->GetChildAt(aOffset)) {
1.3051 + return GetPriorNode(child, aEditableNode, aNoBlockCrossing);
1.3052 + }
1.3053 +
1.3054 + // unless there isn't one, in which case we are at the end of the node
1.3055 + // and want the deep-right child.
1.3056 + nsIContent* resultNode = GetRightmostChild(aParentNode, aNoBlockCrossing);
1.3057 + if (!resultNode || !aEditableNode || IsEditable(resultNode)) {
1.3058 + return resultNode;
1.3059 + }
1.3060 +
1.3061 + // restart the search from the non-editable node we just found
1.3062 + return GetPriorNode(resultNode, aEditableNode, aNoBlockCrossing);
1.3063 +}
1.3064 +
1.3065 +
1.3066 +nsresult
1.3067 +nsEditor::GetNextNode(nsIDOMNode *aParentNode,
1.3068 + int32_t aOffset,
1.3069 + bool aEditableNode,
1.3070 + nsCOMPtr<nsIDOMNode> *aResultNode,
1.3071 + bool bNoBlockCrossing)
1.3072 +{
1.3073 + NS_ENSURE_TRUE(aResultNode, NS_ERROR_NULL_POINTER);
1.3074 + *aResultNode = nullptr;
1.3075 +
1.3076 + nsCOMPtr<nsINode> parentNode = do_QueryInterface(aParentNode);
1.3077 + NS_ENSURE_TRUE(parentNode, NS_ERROR_NULL_POINTER);
1.3078 +
1.3079 + *aResultNode = do_QueryInterface(GetNextNode(parentNode, aOffset,
1.3080 + aEditableNode,
1.3081 + bNoBlockCrossing));
1.3082 + return NS_OK;
1.3083 +}
1.3084 +
1.3085 +nsIContent*
1.3086 +nsEditor::GetNextNode(nsINode* aParentNode,
1.3087 + int32_t aOffset,
1.3088 + bool aEditableNode,
1.3089 + bool aNoBlockCrossing)
1.3090 +{
1.3091 + MOZ_ASSERT(aParentNode);
1.3092 +
1.3093 + // if aParentNode is a text node, use its location instead
1.3094 + if (aParentNode->NodeType() == nsIDOMNode::TEXT_NODE) {
1.3095 + nsINode* parent = aParentNode->GetParentNode();
1.3096 + NS_ENSURE_TRUE(parent, nullptr);
1.3097 + aOffset = parent->IndexOf(aParentNode) + 1; // _after_ the text node
1.3098 + aParentNode = parent;
1.3099 + }
1.3100 +
1.3101 + // look at the child at 'aOffset'
1.3102 + nsIContent* child = aParentNode->GetChildAt(aOffset);
1.3103 + if (child) {
1.3104 + if (aNoBlockCrossing && IsBlockNode(child)) {
1.3105 + return child;
1.3106 + }
1.3107 +
1.3108 + nsIContent* resultNode = GetLeftmostChild(child, aNoBlockCrossing);
1.3109 + if (!resultNode) {
1.3110 + return child;
1.3111 + }
1.3112 +
1.3113 + if (!IsDescendantOfEditorRoot(resultNode)) {
1.3114 + return nullptr;
1.3115 + }
1.3116 +
1.3117 + if (!aEditableNode || IsEditable(resultNode)) {
1.3118 + return resultNode;
1.3119 + }
1.3120 +
1.3121 + // restart the search from the non-editable node we just found
1.3122 + return GetNextNode(resultNode, aEditableNode, aNoBlockCrossing);
1.3123 + }
1.3124 +
1.3125 + // unless there isn't one, in which case we are at the end of the node
1.3126 + // and want the next one.
1.3127 + if (aNoBlockCrossing && IsBlockNode(aParentNode)) {
1.3128 + // don't cross out of parent block
1.3129 + return nullptr;
1.3130 + }
1.3131 +
1.3132 + return GetNextNode(aParentNode, aEditableNode, aNoBlockCrossing);
1.3133 +}
1.3134 +
1.3135 +
1.3136 +nsresult
1.3137 +nsEditor::GetPriorNode(nsIDOMNode *aCurrentNode,
1.3138 + bool aEditableNode,
1.3139 + nsCOMPtr<nsIDOMNode> *aResultNode,
1.3140 + bool bNoBlockCrossing)
1.3141 +{
1.3142 + NS_ENSURE_TRUE(aResultNode, NS_ERROR_NULL_POINTER);
1.3143 +
1.3144 + nsCOMPtr<nsINode> currentNode = do_QueryInterface(aCurrentNode);
1.3145 + NS_ENSURE_TRUE(currentNode, NS_ERROR_NULL_POINTER);
1.3146 +
1.3147 + *aResultNode = do_QueryInterface(GetPriorNode(currentNode, aEditableNode,
1.3148 + bNoBlockCrossing));
1.3149 + return NS_OK;
1.3150 +}
1.3151 +
1.3152 +nsIContent*
1.3153 +nsEditor::GetPriorNode(nsINode* aCurrentNode, bool aEditableNode,
1.3154 + bool aNoBlockCrossing /* = false */)
1.3155 +{
1.3156 + MOZ_ASSERT(aCurrentNode);
1.3157 +
1.3158 + if (!IsDescendantOfEditorRoot(aCurrentNode)) {
1.3159 + return nullptr;
1.3160 + }
1.3161 +
1.3162 + return FindNode(aCurrentNode, false, aEditableNode, aNoBlockCrossing);
1.3163 +}
1.3164 +
1.3165 +nsIContent*
1.3166 +nsEditor::FindNextLeafNode(nsINode *aCurrentNode,
1.3167 + bool aGoForward,
1.3168 + bool bNoBlockCrossing)
1.3169 +{
1.3170 + // called only by GetPriorNode so we don't need to check params.
1.3171 + NS_PRECONDITION(IsDescendantOfEditorRoot(aCurrentNode) &&
1.3172 + !IsEditorRoot(aCurrentNode),
1.3173 + "Bogus arguments");
1.3174 +
1.3175 + nsINode* cur = aCurrentNode;
1.3176 + for (;;) {
1.3177 + // if aCurrentNode has a sibling in the right direction, return
1.3178 + // that sibling's closest child (or itself if it has no children)
1.3179 + nsIContent* sibling =
1.3180 + aGoForward ? cur->GetNextSibling() : cur->GetPreviousSibling();
1.3181 + if (sibling) {
1.3182 + if (bNoBlockCrossing && IsBlockNode(sibling)) {
1.3183 + // don't look inside prevsib, since it is a block
1.3184 + return sibling;
1.3185 + }
1.3186 + nsIContent *leaf =
1.3187 + aGoForward ? GetLeftmostChild(sibling, bNoBlockCrossing) :
1.3188 + GetRightmostChild(sibling, bNoBlockCrossing);
1.3189 + if (!leaf) {
1.3190 + return sibling;
1.3191 + }
1.3192 +
1.3193 + return leaf;
1.3194 + }
1.3195 +
1.3196 + nsINode *parent = cur->GetParentNode();
1.3197 + if (!parent) {
1.3198 + return nullptr;
1.3199 + }
1.3200 +
1.3201 + NS_ASSERTION(IsDescendantOfEditorRoot(parent),
1.3202 + "We started with a proper descendant of root, and should stop "
1.3203 + "if we ever hit the root, so we better have a descendant of "
1.3204 + "root now!");
1.3205 + if (IsEditorRoot(parent) ||
1.3206 + (bNoBlockCrossing && IsBlockNode(parent))) {
1.3207 + return nullptr;
1.3208 + }
1.3209 +
1.3210 + cur = parent;
1.3211 + }
1.3212 +
1.3213 + NS_NOTREACHED("What part of for(;;) do you not understand?");
1.3214 + return nullptr;
1.3215 +}
1.3216 +
1.3217 +nsresult
1.3218 +nsEditor::GetNextNode(nsIDOMNode* aCurrentNode,
1.3219 + bool aEditableNode,
1.3220 + nsCOMPtr<nsIDOMNode> *aResultNode,
1.3221 + bool bNoBlockCrossing)
1.3222 +{
1.3223 + nsCOMPtr<nsINode> currentNode = do_QueryInterface(aCurrentNode);
1.3224 + if (!currentNode || !aResultNode) {
1.3225 + return NS_ERROR_NULL_POINTER;
1.3226 + }
1.3227 +
1.3228 + *aResultNode = do_QueryInterface(GetNextNode(currentNode, aEditableNode,
1.3229 + bNoBlockCrossing));
1.3230 + return NS_OK;
1.3231 +}
1.3232 +
1.3233 +nsIContent*
1.3234 +nsEditor::GetNextNode(nsINode* aCurrentNode,
1.3235 + bool aEditableNode,
1.3236 + bool bNoBlockCrossing)
1.3237 +{
1.3238 + MOZ_ASSERT(aCurrentNode);
1.3239 +
1.3240 + if (!IsDescendantOfEditorRoot(aCurrentNode)) {
1.3241 + return nullptr;
1.3242 + }
1.3243 +
1.3244 + return FindNode(aCurrentNode, true, aEditableNode, bNoBlockCrossing);
1.3245 +}
1.3246 +
1.3247 +nsIContent*
1.3248 +nsEditor::FindNode(nsINode *aCurrentNode,
1.3249 + bool aGoForward,
1.3250 + bool aEditableNode,
1.3251 + bool bNoBlockCrossing)
1.3252 +{
1.3253 + if (IsEditorRoot(aCurrentNode)) {
1.3254 + // Don't allow traversal above the root node! This helps
1.3255 + // prevent us from accidentally editing browser content
1.3256 + // when the editor is in a text widget.
1.3257 +
1.3258 + return nullptr;
1.3259 + }
1.3260 +
1.3261 + nsCOMPtr<nsIContent> candidate =
1.3262 + FindNextLeafNode(aCurrentNode, aGoForward, bNoBlockCrossing);
1.3263 +
1.3264 + if (!candidate) {
1.3265 + return nullptr;
1.3266 + }
1.3267 +
1.3268 + if (!aEditableNode || IsEditable(candidate)) {
1.3269 + return candidate;
1.3270 + }
1.3271 +
1.3272 + return FindNode(candidate, aGoForward, aEditableNode, bNoBlockCrossing);
1.3273 +}
1.3274 +
1.3275 +nsIDOMNode*
1.3276 +nsEditor::GetRightmostChild(nsIDOMNode* aCurrentNode,
1.3277 + bool bNoBlockCrossing)
1.3278 +{
1.3279 + nsCOMPtr<nsINode> currentNode = do_QueryInterface(aCurrentNode);
1.3280 + nsIContent* result = GetRightmostChild(currentNode, bNoBlockCrossing);
1.3281 + return result ? result->AsDOMNode() : nullptr;
1.3282 +}
1.3283 +
1.3284 +nsIContent*
1.3285 +nsEditor::GetRightmostChild(nsINode *aCurrentNode,
1.3286 + bool bNoBlockCrossing)
1.3287 +{
1.3288 + NS_ENSURE_TRUE(aCurrentNode, nullptr);
1.3289 + nsIContent *cur = aCurrentNode->GetLastChild();
1.3290 + if (!cur) {
1.3291 + return nullptr;
1.3292 + }
1.3293 + for (;;) {
1.3294 + if (bNoBlockCrossing && IsBlockNode(cur)) {
1.3295 + return cur;
1.3296 + }
1.3297 + nsIContent* next = cur->GetLastChild();
1.3298 + if (!next) {
1.3299 + return cur;
1.3300 + }
1.3301 + cur = next;
1.3302 + }
1.3303 +
1.3304 + NS_NOTREACHED("What part of for(;;) do you not understand?");
1.3305 + return nullptr;
1.3306 +}
1.3307 +
1.3308 +nsIContent*
1.3309 +nsEditor::GetLeftmostChild(nsINode *aCurrentNode,
1.3310 + bool bNoBlockCrossing)
1.3311 +{
1.3312 + NS_ENSURE_TRUE(aCurrentNode, nullptr);
1.3313 + nsIContent *cur = aCurrentNode->GetFirstChild();
1.3314 + if (!cur) {
1.3315 + return nullptr;
1.3316 + }
1.3317 + for (;;) {
1.3318 + if (bNoBlockCrossing && IsBlockNode(cur)) {
1.3319 + return cur;
1.3320 + }
1.3321 + nsIContent *next = cur->GetFirstChild();
1.3322 + if (!next) {
1.3323 + return cur;
1.3324 + }
1.3325 + cur = next;
1.3326 + }
1.3327 +
1.3328 + NS_NOTREACHED("What part of for(;;) do you not understand?");
1.3329 + return nullptr;
1.3330 +}
1.3331 +
1.3332 +nsIDOMNode*
1.3333 +nsEditor::GetLeftmostChild(nsIDOMNode* aCurrentNode,
1.3334 + bool bNoBlockCrossing)
1.3335 +{
1.3336 + nsCOMPtr<nsINode> currentNode = do_QueryInterface(aCurrentNode);
1.3337 + nsIContent* result = GetLeftmostChild(currentNode, bNoBlockCrossing);
1.3338 + return result ? result->AsDOMNode() : nullptr;
1.3339 +}
1.3340 +
1.3341 +bool
1.3342 +nsEditor::IsBlockNode(nsIDOMNode* aNode)
1.3343 +{
1.3344 + nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
1.3345 + return IsBlockNode(node);
1.3346 +}
1.3347 +
1.3348 +bool
1.3349 +nsEditor::IsBlockNode(nsINode* aNode)
1.3350 +{
1.3351 + // stub to be overridden in nsHTMLEditor.
1.3352 + // screwing around with the class hierarchy here in order
1.3353 + // to not duplicate the code in GetNextNode/GetPrevNode
1.3354 + // across both nsEditor/nsHTMLEditor.
1.3355 + return false;
1.3356 +}
1.3357 +
1.3358 +bool
1.3359 +nsEditor::CanContain(nsIDOMNode* aParent, nsIDOMNode* aChild)
1.3360 +{
1.3361 + nsCOMPtr<nsIContent> parent = do_QueryInterface(aParent);
1.3362 + NS_ENSURE_TRUE(parent, false);
1.3363 +
1.3364 + switch (parent->NodeType()) {
1.3365 + case nsIDOMNode::ELEMENT_NODE:
1.3366 + case nsIDOMNode::DOCUMENT_FRAGMENT_NODE:
1.3367 + return TagCanContain(parent->Tag(), aChild);
1.3368 + }
1.3369 + return false;
1.3370 +}
1.3371 +
1.3372 +bool
1.3373 +nsEditor::CanContainTag(nsIDOMNode* aParent, nsIAtom* aChildTag)
1.3374 +{
1.3375 + nsCOMPtr<nsIContent> parent = do_QueryInterface(aParent);
1.3376 + NS_ENSURE_TRUE(parent, false);
1.3377 +
1.3378 + switch (parent->NodeType()) {
1.3379 + case nsIDOMNode::ELEMENT_NODE:
1.3380 + case nsIDOMNode::DOCUMENT_FRAGMENT_NODE:
1.3381 + return TagCanContainTag(parent->Tag(), aChildTag);
1.3382 + }
1.3383 + return false;
1.3384 +}
1.3385 +
1.3386 +bool
1.3387 +nsEditor::TagCanContain(nsIAtom* aParentTag, nsIDOMNode* aChild)
1.3388 +{
1.3389 + nsCOMPtr<nsIContent> child = do_QueryInterface(aChild);
1.3390 + NS_ENSURE_TRUE(child, false);
1.3391 +
1.3392 + switch (child->NodeType()) {
1.3393 + case nsIDOMNode::TEXT_NODE:
1.3394 + case nsIDOMNode::ELEMENT_NODE:
1.3395 + case nsIDOMNode::DOCUMENT_FRAGMENT_NODE:
1.3396 + return TagCanContainTag(aParentTag, child->Tag());
1.3397 + }
1.3398 + return false;
1.3399 +}
1.3400 +
1.3401 +bool
1.3402 +nsEditor::TagCanContainTag(nsIAtom* aParentTag, nsIAtom* aChildTag)
1.3403 +{
1.3404 + return true;
1.3405 +}
1.3406 +
1.3407 +bool
1.3408 +nsEditor::IsRoot(nsIDOMNode* inNode)
1.3409 +{
1.3410 + NS_ENSURE_TRUE(inNode, false);
1.3411 +
1.3412 + nsCOMPtr<nsIDOMNode> rootNode = do_QueryInterface(GetRoot());
1.3413 +
1.3414 + return inNode == rootNode;
1.3415 +}
1.3416 +
1.3417 +bool
1.3418 +nsEditor::IsRoot(nsINode* inNode)
1.3419 +{
1.3420 + NS_ENSURE_TRUE(inNode, false);
1.3421 +
1.3422 + nsCOMPtr<nsINode> rootNode = GetRoot();
1.3423 +
1.3424 + return inNode == rootNode;
1.3425 +}
1.3426 +
1.3427 +bool
1.3428 +nsEditor::IsEditorRoot(nsINode* aNode)
1.3429 +{
1.3430 + NS_ENSURE_TRUE(aNode, false);
1.3431 + nsCOMPtr<nsINode> rootNode = GetEditorRoot();
1.3432 + return aNode == rootNode;
1.3433 +}
1.3434 +
1.3435 +bool
1.3436 +nsEditor::IsDescendantOfRoot(nsIDOMNode* inNode)
1.3437 +{
1.3438 + nsCOMPtr<nsINode> node = do_QueryInterface(inNode);
1.3439 + return IsDescendantOfRoot(node);
1.3440 +}
1.3441 +
1.3442 +bool
1.3443 +nsEditor::IsDescendantOfRoot(nsINode* inNode)
1.3444 +{
1.3445 + NS_ENSURE_TRUE(inNode, false);
1.3446 + nsCOMPtr<nsIContent> root = GetRoot();
1.3447 + NS_ENSURE_TRUE(root, false);
1.3448 +
1.3449 + return nsContentUtils::ContentIsDescendantOf(inNode, root);
1.3450 +}
1.3451 +
1.3452 +bool
1.3453 +nsEditor::IsDescendantOfEditorRoot(nsIDOMNode* aNode)
1.3454 +{
1.3455 + nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
1.3456 + return IsDescendantOfEditorRoot(node);
1.3457 +}
1.3458 +
1.3459 +bool
1.3460 +nsEditor::IsDescendantOfEditorRoot(nsINode* aNode)
1.3461 +{
1.3462 + NS_ENSURE_TRUE(aNode, false);
1.3463 + nsCOMPtr<nsIContent> root = GetEditorRoot();
1.3464 + NS_ENSURE_TRUE(root, false);
1.3465 +
1.3466 + return nsContentUtils::ContentIsDescendantOf(aNode, root);
1.3467 +}
1.3468 +
1.3469 +bool
1.3470 +nsEditor::IsContainer(nsIDOMNode *aNode)
1.3471 +{
1.3472 + return aNode ? true : false;
1.3473 +}
1.3474 +
1.3475 +static inline bool
1.3476 +IsElementVisible(dom::Element* aElement)
1.3477 +{
1.3478 + if (aElement->GetPrimaryFrame()) {
1.3479 + // It's visible, for our purposes
1.3480 + return true;
1.3481 + }
1.3482 +
1.3483 + nsIContent *cur = aElement;
1.3484 + for (; ;) {
1.3485 + // Walk up the tree looking for the nearest ancestor with a frame.
1.3486 + // The state of the child right below it will determine whether
1.3487 + // we might possibly have a frame or not.
1.3488 + bool haveLazyBitOnChild = cur->HasFlag(NODE_NEEDS_FRAME);
1.3489 + cur = cur->GetFlattenedTreeParent();
1.3490 + if (!cur) {
1.3491 + if (!haveLazyBitOnChild) {
1.3492 + // None of our ancestors have lazy bits set, so we shouldn't
1.3493 + // have a frame
1.3494 + return false;
1.3495 + }
1.3496 +
1.3497 + // The root has a lazy frame construction bit. We need to check
1.3498 + // our style.
1.3499 + break;
1.3500 + }
1.3501 +
1.3502 + if (cur->GetPrimaryFrame()) {
1.3503 + if (!haveLazyBitOnChild) {
1.3504 + // Our ancestor directly under |cur| doesn't have lazy bits;
1.3505 + // that means we won't get a frame
1.3506 + return false;
1.3507 + }
1.3508 +
1.3509 + if (cur->GetPrimaryFrame()->IsLeaf()) {
1.3510 + // Nothing under here will ever get frames
1.3511 + return false;
1.3512 + }
1.3513 +
1.3514 + // Otherwise, we might end up with a frame when that lazy bit is
1.3515 + // processed. Figure out our actual style.
1.3516 + break;
1.3517 + }
1.3518 + }
1.3519 +
1.3520 + // Now it might be that we have no frame because we're in a
1.3521 + // display:none subtree, or it might be that we're just dealing with
1.3522 + // lazy frame construction and it hasn't happened yet. Check which
1.3523 + // one it is.
1.3524 + nsRefPtr<nsStyleContext> styleContext =
1.3525 + nsComputedDOMStyle::GetStyleContextForElementNoFlush(aElement,
1.3526 + nullptr, nullptr);
1.3527 + if (styleContext) {
1.3528 + return styleContext->StyleDisplay()->mDisplay != NS_STYLE_DISPLAY_NONE;
1.3529 + }
1.3530 + return false;
1.3531 +}
1.3532 +
1.3533 +bool
1.3534 +nsEditor::IsEditable(nsIDOMNode *aNode)
1.3535 +{
1.3536 + nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
1.3537 + return IsEditable(content);
1.3538 +}
1.3539 +
1.3540 +bool
1.3541 +nsEditor::IsEditable(nsIContent *aNode)
1.3542 +{
1.3543 + NS_ENSURE_TRUE(aNode, false);
1.3544 +
1.3545 + if (IsMozEditorBogusNode(aNode) || !IsModifiableNode(aNode)) return false;
1.3546 +
1.3547 + // see if it has a frame. If so, we'll edit it.
1.3548 + // special case for textnodes: frame must have width.
1.3549 + if (aNode->IsElement() && !IsElementVisible(aNode->AsElement())) {
1.3550 + // If the element has no frame, it's not editable. Note that we
1.3551 + // need to check IsElement() here, because some of our tests
1.3552 + // rely on frameless textnodes being visible.
1.3553 + return false;
1.3554 + }
1.3555 + switch (aNode->NodeType()) {
1.3556 + case nsIDOMNode::ELEMENT_NODE:
1.3557 + case nsIDOMNode::TEXT_NODE:
1.3558 + return true; // element or text node; not invisible
1.3559 + default:
1.3560 + return false;
1.3561 + }
1.3562 +}
1.3563 +
1.3564 +bool
1.3565 +nsEditor::IsMozEditorBogusNode(nsIContent *element)
1.3566 +{
1.3567 + return element &&
1.3568 + element->AttrValueIs(kNameSpaceID_None, kMOZEditorBogusNodeAttrAtom,
1.3569 + kMOZEditorBogusNodeValue, eCaseMatters);
1.3570 +}
1.3571 +
1.3572 +uint32_t
1.3573 +nsEditor::CountEditableChildren(nsINode* aNode)
1.3574 +{
1.3575 + MOZ_ASSERT(aNode);
1.3576 + uint32_t count = 0;
1.3577 + for (nsIContent* child = aNode->GetFirstChild();
1.3578 + child;
1.3579 + child = child->GetNextSibling()) {
1.3580 + if (IsEditable(child)) {
1.3581 + ++count;
1.3582 + }
1.3583 + }
1.3584 + return count;
1.3585 +}
1.3586 +
1.3587 +//END nsEditor static utility methods
1.3588 +
1.3589 +
1.3590 +NS_IMETHODIMP nsEditor::IncrementModificationCount(int32_t inNumMods)
1.3591 +{
1.3592 + uint32_t oldModCount = mModCount;
1.3593 +
1.3594 + mModCount += inNumMods;
1.3595 +
1.3596 + if ((oldModCount == 0 && mModCount != 0)
1.3597 + || (oldModCount != 0 && mModCount == 0))
1.3598 + NotifyDocumentListeners(eDocumentStateChanged);
1.3599 + return NS_OK;
1.3600 +}
1.3601 +
1.3602 +
1.3603 +NS_IMETHODIMP nsEditor::GetModificationCount(int32_t *outModCount)
1.3604 +{
1.3605 + NS_ENSURE_ARG_POINTER(outModCount);
1.3606 + *outModCount = mModCount;
1.3607 + return NS_OK;
1.3608 +}
1.3609 +
1.3610 +
1.3611 +NS_IMETHODIMP nsEditor::ResetModificationCount()
1.3612 +{
1.3613 + bool doNotify = (mModCount != 0);
1.3614 +
1.3615 + mModCount = 0;
1.3616 +
1.3617 + if (doNotify)
1.3618 + NotifyDocumentListeners(eDocumentStateChanged);
1.3619 + return NS_OK;
1.3620 +}
1.3621 +
1.3622 +//END nsEditor Private methods
1.3623 +
1.3624 +
1.3625 +
1.3626 +///////////////////////////////////////////////////////////////////////////
1.3627 +// GetTag: digs out the atom for the tag of this node
1.3628 +//
1.3629 +nsIAtom *
1.3630 +nsEditor::GetTag(nsIDOMNode *aNode)
1.3631 +{
1.3632 + nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
1.3633 +
1.3634 + if (!content)
1.3635 + {
1.3636 + NS_ASSERTION(aNode, "null node passed to nsEditor::Tag()");
1.3637 +
1.3638 + return nullptr;
1.3639 + }
1.3640 +
1.3641 + return content->Tag();
1.3642 +}
1.3643 +
1.3644 +
1.3645 +///////////////////////////////////////////////////////////////////////////
1.3646 +// GetTagString: digs out string for the tag of this node
1.3647 +//
1.3648 +nsresult
1.3649 +nsEditor::GetTagString(nsIDOMNode *aNode, nsAString& outString)
1.3650 +{
1.3651 + if (!aNode)
1.3652 + {
1.3653 + NS_NOTREACHED("null node passed to nsEditor::GetTag()");
1.3654 + return NS_ERROR_NULL_POINTER;
1.3655 + }
1.3656 +
1.3657 + nsIAtom *atom = GetTag(aNode);
1.3658 + if (!atom)
1.3659 + {
1.3660 + return NS_ERROR_FAILURE;
1.3661 + }
1.3662 +
1.3663 + atom->ToString(outString);
1.3664 + return NS_OK;
1.3665 +}
1.3666 +
1.3667 +
1.3668 +///////////////////////////////////////////////////////////////////////////
1.3669 +// NodesSameType: do these nodes have the same tag?
1.3670 +//
1.3671 +bool
1.3672 +nsEditor::NodesSameType(nsIDOMNode *aNode1, nsIDOMNode *aNode2)
1.3673 +{
1.3674 + if (!aNode1 || !aNode2) {
1.3675 + NS_NOTREACHED("null node passed to nsEditor::NodesSameType()");
1.3676 + return false;
1.3677 + }
1.3678 +
1.3679 + nsCOMPtr<nsIContent> content1 = do_QueryInterface(aNode1);
1.3680 + NS_ENSURE_TRUE(content1, false);
1.3681 +
1.3682 + nsCOMPtr<nsIContent> content2 = do_QueryInterface(aNode2);
1.3683 + NS_ENSURE_TRUE(content2, false);
1.3684 +
1.3685 + return AreNodesSameType(content1, content2);
1.3686 +}
1.3687 +
1.3688 +/* virtual */
1.3689 +bool
1.3690 +nsEditor::AreNodesSameType(nsIContent* aNode1, nsIContent* aNode2)
1.3691 +{
1.3692 + MOZ_ASSERT(aNode1);
1.3693 + MOZ_ASSERT(aNode2);
1.3694 + return aNode1->Tag() == aNode2->Tag();
1.3695 +}
1.3696 +
1.3697 +
1.3698 +///////////////////////////////////////////////////////////////////////////
1.3699 +// IsTextNode: true if node of dom type text
1.3700 +//
1.3701 +bool
1.3702 +nsEditor::IsTextNode(nsIDOMNode *aNode)
1.3703 +{
1.3704 + if (!aNode)
1.3705 + {
1.3706 + NS_NOTREACHED("null node passed to IsTextNode()");
1.3707 + return false;
1.3708 + }
1.3709 +
1.3710 + uint16_t nodeType;
1.3711 + aNode->GetNodeType(&nodeType);
1.3712 + return (nodeType == nsIDOMNode::TEXT_NODE);
1.3713 +}
1.3714 +
1.3715 +bool
1.3716 +nsEditor::IsTextNode(nsINode *aNode)
1.3717 +{
1.3718 + return aNode->NodeType() == nsIDOMNode::TEXT_NODE;
1.3719 +}
1.3720 +
1.3721 +///////////////////////////////////////////////////////////////////////////
1.3722 +// GetChildAt: returns the node at this position index in the parent
1.3723 +//
1.3724 +nsCOMPtr<nsIDOMNode>
1.3725 +nsEditor::GetChildAt(nsIDOMNode *aParent, int32_t aOffset)
1.3726 +{
1.3727 + nsCOMPtr<nsIDOMNode> resultNode;
1.3728 +
1.3729 + nsCOMPtr<nsIContent> parent = do_QueryInterface(aParent);
1.3730 +
1.3731 + NS_ENSURE_TRUE(parent, resultNode);
1.3732 +
1.3733 + resultNode = do_QueryInterface(parent->GetChildAt(aOffset));
1.3734 +
1.3735 + return resultNode;
1.3736 +}
1.3737 +
1.3738 +///////////////////////////////////////////////////////////////////////////
1.3739 +// GetNodeAtRangeOffsetPoint: returns the node at this position in a range,
1.3740 +// assuming that aParentOrNode is the node itself if it's a text node, or
1.3741 +// the node's parent otherwise.
1.3742 +//
1.3743 +nsCOMPtr<nsIDOMNode>
1.3744 +nsEditor::GetNodeAtRangeOffsetPoint(nsIDOMNode* aParentOrNode, int32_t aOffset)
1.3745 +{
1.3746 + if (IsTextNode(aParentOrNode)) {
1.3747 + return aParentOrNode;
1.3748 + }
1.3749 + return GetChildAt(aParentOrNode, aOffset);
1.3750 +}
1.3751 +
1.3752 +
1.3753 +///////////////////////////////////////////////////////////////////////////
1.3754 +// GetStartNodeAndOffset: returns whatever the start parent & offset is of
1.3755 +// the first range in the selection.
1.3756 +nsresult
1.3757 +nsEditor::GetStartNodeAndOffset(nsISelection *aSelection,
1.3758 + nsIDOMNode **outStartNode,
1.3759 + int32_t *outStartOffset)
1.3760 +{
1.3761 + NS_ENSURE_TRUE(outStartNode && outStartOffset && aSelection, NS_ERROR_NULL_POINTER);
1.3762 +
1.3763 + nsCOMPtr<nsINode> startNode;
1.3764 + nsresult rv = GetStartNodeAndOffset(static_cast<Selection*>(aSelection),
1.3765 + getter_AddRefs(startNode),
1.3766 + outStartOffset);
1.3767 + NS_ENSURE_SUCCESS(rv, rv);
1.3768 +
1.3769 + if (startNode) {
1.3770 + NS_ADDREF(*outStartNode = startNode->AsDOMNode());
1.3771 + } else {
1.3772 + *outStartNode = nullptr;
1.3773 + }
1.3774 + return NS_OK;
1.3775 +}
1.3776 +
1.3777 +nsresult
1.3778 +nsEditor::GetStartNodeAndOffset(Selection* aSelection, nsINode** aStartNode,
1.3779 + int32_t* aStartOffset)
1.3780 +{
1.3781 + MOZ_ASSERT(aSelection);
1.3782 + MOZ_ASSERT(aStartNode);
1.3783 + MOZ_ASSERT(aStartOffset);
1.3784 +
1.3785 + *aStartNode = nullptr;
1.3786 + *aStartOffset = 0;
1.3787 +
1.3788 + NS_ENSURE_TRUE(aSelection->GetRangeCount(), NS_ERROR_FAILURE);
1.3789 +
1.3790 + const nsRange* range = aSelection->GetRangeAt(0);
1.3791 + NS_ENSURE_TRUE(range, NS_ERROR_FAILURE);
1.3792 +
1.3793 + NS_ENSURE_TRUE(range->IsPositioned(), NS_ERROR_FAILURE);
1.3794 +
1.3795 + NS_IF_ADDREF(*aStartNode = range->GetStartParent());
1.3796 + *aStartOffset = range->StartOffset();
1.3797 + return NS_OK;
1.3798 +}
1.3799 +
1.3800 +
1.3801 +///////////////////////////////////////////////////////////////////////////
1.3802 +// GetEndNodeAndOffset: returns whatever the end parent & offset is of
1.3803 +// the first range in the selection.
1.3804 +nsresult
1.3805 +nsEditor::GetEndNodeAndOffset(nsISelection *aSelection,
1.3806 + nsIDOMNode **outEndNode,
1.3807 + int32_t *outEndOffset)
1.3808 +{
1.3809 + NS_ENSURE_TRUE(outEndNode && outEndOffset && aSelection, NS_ERROR_NULL_POINTER);
1.3810 +
1.3811 + nsCOMPtr<nsINode> endNode;
1.3812 + nsresult rv = GetEndNodeAndOffset(static_cast<Selection*>(aSelection),
1.3813 + getter_AddRefs(endNode),
1.3814 + outEndOffset);
1.3815 + NS_ENSURE_SUCCESS(rv, rv);
1.3816 +
1.3817 + if (endNode) {
1.3818 + NS_ADDREF(*outEndNode = endNode->AsDOMNode());
1.3819 + } else {
1.3820 + *outEndNode = nullptr;
1.3821 + }
1.3822 + return NS_OK;
1.3823 +}
1.3824 +
1.3825 +nsresult
1.3826 +nsEditor::GetEndNodeAndOffset(Selection* aSelection, nsINode** aEndNode,
1.3827 + int32_t* aEndOffset)
1.3828 +{
1.3829 + MOZ_ASSERT(aSelection);
1.3830 + MOZ_ASSERT(aEndNode);
1.3831 + MOZ_ASSERT(aEndOffset);
1.3832 +
1.3833 + *aEndNode = nullptr;
1.3834 + *aEndOffset = 0;
1.3835 +
1.3836 + NS_ENSURE_TRUE(aSelection->GetRangeCount(), NS_ERROR_FAILURE);
1.3837 +
1.3838 + const nsRange* range = aSelection->GetRangeAt(0);
1.3839 + NS_ENSURE_TRUE(range, NS_ERROR_FAILURE);
1.3840 +
1.3841 + NS_ENSURE_TRUE(range->IsPositioned(), NS_ERROR_FAILURE);
1.3842 +
1.3843 + NS_IF_ADDREF(*aEndNode = range->GetEndParent());
1.3844 + *aEndOffset = range->EndOffset();
1.3845 + return NS_OK;
1.3846 +}
1.3847 +
1.3848 +
1.3849 +///////////////////////////////////////////////////////////////////////////
1.3850 +// IsPreformatted: checks the style info for the node for the preformatted
1.3851 +// text style.
1.3852 +nsresult
1.3853 +nsEditor::IsPreformatted(nsIDOMNode *aNode, bool *aResult)
1.3854 +{
1.3855 + nsCOMPtr<nsIContent> content = do_QueryInterface(aNode);
1.3856 +
1.3857 + NS_ENSURE_TRUE(aResult && content, NS_ERROR_NULL_POINTER);
1.3858 +
1.3859 + nsCOMPtr<nsIPresShell> ps = GetPresShell();
1.3860 + NS_ENSURE_TRUE(ps, NS_ERROR_NOT_INITIALIZED);
1.3861 +
1.3862 + // Look at the node (and its parent if it's not an element), and grab its style context
1.3863 + nsRefPtr<nsStyleContext> elementStyle;
1.3864 + if (!content->IsElement()) {
1.3865 + content = content->GetParent();
1.3866 + }
1.3867 + if (content && content->IsElement()) {
1.3868 + elementStyle = nsComputedDOMStyle::GetStyleContextForElementNoFlush(content->AsElement(),
1.3869 + nullptr,
1.3870 + ps);
1.3871 + }
1.3872 +
1.3873 + if (!elementStyle)
1.3874 + {
1.3875 + // Consider nodes without a style context to be NOT preformatted:
1.3876 + // For instance, this is true of JS tags inside the body (which show
1.3877 + // up as #text nodes but have no style context).
1.3878 + *aResult = false;
1.3879 + return NS_OK;
1.3880 + }
1.3881 +
1.3882 + const nsStyleText* styleText = elementStyle->StyleText();
1.3883 +
1.3884 + *aResult = styleText->WhiteSpaceIsSignificant();
1.3885 + return NS_OK;
1.3886 +}
1.3887 +
1.3888 +
1.3889 +///////////////////////////////////////////////////////////////////////////
1.3890 +// SplitNodeDeep: this splits a node "deeply", splitting children as
1.3891 +// appropriate. The place to split is represented by
1.3892 +// a dom point at {splitPointParent, splitPointOffset}.
1.3893 +// That dom point must be inside aNode, which is the node to
1.3894 +// split. outOffset is set to the offset in the parent of aNode where
1.3895 +// the split terminates - where you would want to insert
1.3896 +// a new element, for instance, if that's why you were splitting
1.3897 +// the node.
1.3898 +//
1.3899 +nsresult
1.3900 +nsEditor::SplitNodeDeep(nsIDOMNode *aNode,
1.3901 + nsIDOMNode *aSplitPointParent,
1.3902 + int32_t aSplitPointOffset,
1.3903 + int32_t *outOffset,
1.3904 + bool aNoEmptyContainers,
1.3905 + nsCOMPtr<nsIDOMNode> *outLeftNode,
1.3906 + nsCOMPtr<nsIDOMNode> *outRightNode)
1.3907 +{
1.3908 + nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
1.3909 + NS_ENSURE_TRUE(node && aSplitPointParent && outOffset, NS_ERROR_NULL_POINTER);
1.3910 + int32_t offset = aSplitPointOffset;
1.3911 +
1.3912 + if (outLeftNode) *outLeftNode = nullptr;
1.3913 + if (outRightNode) *outRightNode = nullptr;
1.3914 +
1.3915 + nsCOMPtr<nsINode> nodeToSplit = do_QueryInterface(aSplitPointParent);
1.3916 + while (nodeToSplit) {
1.3917 + // need to insert rules code call here to do things like
1.3918 + // not split a list if you are after the last <li> or before the first, etc.
1.3919 + // for now we just have some smarts about unneccessarily splitting
1.3920 + // textnodes, which should be universal enough to put straight in
1.3921 + // this nsEditor routine.
1.3922 +
1.3923 + nsCOMPtr<nsIDOMCharacterData> nodeAsText = do_QueryInterface(nodeToSplit);
1.3924 + uint32_t len = nodeToSplit->Length();
1.3925 + bool bDoSplit = false;
1.3926 +
1.3927 + if (!(aNoEmptyContainers || nodeAsText) || (offset && (offset != (int32_t)len)))
1.3928 + {
1.3929 + bDoSplit = true;
1.3930 + nsCOMPtr<nsIDOMNode> tempNode;
1.3931 + nsresult rv = SplitNode(nodeToSplit->AsDOMNode(), offset,
1.3932 + getter_AddRefs(tempNode));
1.3933 + NS_ENSURE_SUCCESS(rv, rv);
1.3934 +
1.3935 + if (outRightNode) {
1.3936 + *outRightNode = nodeToSplit->AsDOMNode();
1.3937 + }
1.3938 + if (outLeftNode) {
1.3939 + *outLeftNode = tempNode;
1.3940 + }
1.3941 + }
1.3942 +
1.3943 + nsINode* parentNode = nodeToSplit->GetParentNode();
1.3944 + NS_ENSURE_TRUE(parentNode, NS_ERROR_FAILURE);
1.3945 +
1.3946 + if (!bDoSplit && offset) {
1.3947 + // must be "end of text node" case, we didn't split it, just move past it
1.3948 + offset = parentNode->IndexOf(nodeToSplit) + 1;
1.3949 + if (outLeftNode) {
1.3950 + *outLeftNode = nodeToSplit->AsDOMNode();
1.3951 + }
1.3952 + } else {
1.3953 + offset = parentNode->IndexOf(nodeToSplit);
1.3954 + if (outRightNode) {
1.3955 + *outRightNode = nodeToSplit->AsDOMNode();
1.3956 + }
1.3957 + }
1.3958 +
1.3959 + if (nodeToSplit == node) {
1.3960 + // we split all the way up to (and including) aNode; we're done
1.3961 + break;
1.3962 + }
1.3963 +
1.3964 + nodeToSplit = parentNode;
1.3965 + }
1.3966 +
1.3967 + if (!nodeToSplit) {
1.3968 + NS_NOTREACHED("null node obtained in nsEditor::SplitNodeDeep()");
1.3969 + return NS_ERROR_FAILURE;
1.3970 + }
1.3971 +
1.3972 + *outOffset = offset;
1.3973 + return NS_OK;
1.3974 +}
1.3975 +
1.3976 +
1.3977 +///////////////////////////////////////////////////////////////////////////
1.3978 +// JoinNodeDeep: this joins two like nodes "deeply", joining children as
1.3979 +// appropriate.
1.3980 +nsresult
1.3981 +nsEditor::JoinNodeDeep(nsIDOMNode *aLeftNode,
1.3982 + nsIDOMNode *aRightNode,
1.3983 + nsCOMPtr<nsIDOMNode> *aOutJoinNode,
1.3984 + int32_t *outOffset)
1.3985 +{
1.3986 + NS_ENSURE_TRUE(aLeftNode && aRightNode && aOutJoinNode && outOffset, NS_ERROR_NULL_POINTER);
1.3987 +
1.3988 + // while the rightmost children and their descendants of the left node
1.3989 + // match the leftmost children and their descendants of the right node
1.3990 + // join them up. Can you say that three times fast?
1.3991 +
1.3992 + nsCOMPtr<nsIDOMNode> leftNodeToJoin = do_QueryInterface(aLeftNode);
1.3993 + nsCOMPtr<nsIDOMNode> rightNodeToJoin = do_QueryInterface(aRightNode);
1.3994 + nsCOMPtr<nsIDOMNode> parentNode,tmp;
1.3995 + nsresult res = NS_OK;
1.3996 +
1.3997 + rightNodeToJoin->GetParentNode(getter_AddRefs(parentNode));
1.3998 +
1.3999 + while (leftNodeToJoin && rightNodeToJoin && parentNode &&
1.4000 + NodesSameType(leftNodeToJoin, rightNodeToJoin))
1.4001 + {
1.4002 + // adjust out params
1.4003 + uint32_t length;
1.4004 + res = GetLengthOfDOMNode(leftNodeToJoin, length);
1.4005 + NS_ENSURE_SUCCESS(res, res);
1.4006 +
1.4007 + *aOutJoinNode = rightNodeToJoin;
1.4008 + *outOffset = length;
1.4009 +
1.4010 + // do the join
1.4011 + res = JoinNodes(leftNodeToJoin, rightNodeToJoin, parentNode);
1.4012 + NS_ENSURE_SUCCESS(res, res);
1.4013 +
1.4014 + if (IsTextNode(parentNode)) // we've joined all the way down to text nodes, we're done!
1.4015 + return NS_OK;
1.4016 +
1.4017 + else
1.4018 + {
1.4019 + // get new left and right nodes, and begin anew
1.4020 + parentNode = rightNodeToJoin;
1.4021 + leftNodeToJoin = GetChildAt(parentNode, length-1);
1.4022 + rightNodeToJoin = GetChildAt(parentNode, length);
1.4023 +
1.4024 + // skip over non-editable nodes
1.4025 + while (leftNodeToJoin && !IsEditable(leftNodeToJoin))
1.4026 + {
1.4027 + leftNodeToJoin->GetPreviousSibling(getter_AddRefs(tmp));
1.4028 + leftNodeToJoin = tmp;
1.4029 + }
1.4030 + if (!leftNodeToJoin) break;
1.4031 +
1.4032 + while (rightNodeToJoin && !IsEditable(rightNodeToJoin))
1.4033 + {
1.4034 + rightNodeToJoin->GetNextSibling(getter_AddRefs(tmp));
1.4035 + rightNodeToJoin = tmp;
1.4036 + }
1.4037 + if (!rightNodeToJoin) break;
1.4038 + }
1.4039 + }
1.4040 +
1.4041 + return res;
1.4042 +}
1.4043 +
1.4044 +void
1.4045 +nsEditor::BeginUpdateViewBatch()
1.4046 +{
1.4047 + NS_PRECONDITION(mUpdateCount >= 0, "bad state");
1.4048 +
1.4049 + if (0 == mUpdateCount)
1.4050 + {
1.4051 + // Turn off selection updates and notifications.
1.4052 +
1.4053 + nsCOMPtr<nsISelection> selection;
1.4054 + GetSelection(getter_AddRefs(selection));
1.4055 +
1.4056 + if (selection)
1.4057 + {
1.4058 + nsCOMPtr<nsISelectionPrivate> selPrivate(do_QueryInterface(selection));
1.4059 + selPrivate->StartBatchChanges();
1.4060 + }
1.4061 + }
1.4062 +
1.4063 + mUpdateCount++;
1.4064 +}
1.4065 +
1.4066 +
1.4067 +nsresult nsEditor::EndUpdateViewBatch()
1.4068 +{
1.4069 + NS_PRECONDITION(mUpdateCount > 0, "bad state");
1.4070 +
1.4071 + if (mUpdateCount <= 0)
1.4072 + {
1.4073 + mUpdateCount = 0;
1.4074 + return NS_ERROR_FAILURE;
1.4075 + }
1.4076 +
1.4077 + mUpdateCount--;
1.4078 +
1.4079 + if (0 == mUpdateCount)
1.4080 + {
1.4081 + // Turn selection updating and notifications back on.
1.4082 +
1.4083 + nsCOMPtr<nsISelection>selection;
1.4084 + GetSelection(getter_AddRefs(selection));
1.4085 +
1.4086 + if (selection) {
1.4087 + nsCOMPtr<nsISelectionPrivate>selPrivate(do_QueryInterface(selection));
1.4088 + selPrivate->EndBatchChanges();
1.4089 + }
1.4090 + }
1.4091 +
1.4092 + return NS_OK;
1.4093 +}
1.4094 +
1.4095 +bool
1.4096 +nsEditor::GetShouldTxnSetSelection()
1.4097 +{
1.4098 + return mShouldTxnSetSelection;
1.4099 +}
1.4100 +
1.4101 +
1.4102 +NS_IMETHODIMP
1.4103 +nsEditor::DeleteSelectionImpl(EDirection aAction,
1.4104 + EStripWrappers aStripWrappers)
1.4105 +{
1.4106 + MOZ_ASSERT(aStripWrappers == eStrip || aStripWrappers == eNoStrip);
1.4107 +
1.4108 + nsCOMPtr<nsISelection>selection;
1.4109 + nsresult res = GetSelection(getter_AddRefs(selection));
1.4110 + NS_ENSURE_SUCCESS(res, res);
1.4111 + nsRefPtr<EditAggregateTxn> txn;
1.4112 + nsCOMPtr<nsINode> deleteNode;
1.4113 + int32_t deleteCharOffset = 0, deleteCharLength = 0;
1.4114 + res = CreateTxnForDeleteSelection(aAction, getter_AddRefs(txn),
1.4115 + getter_AddRefs(deleteNode),
1.4116 + &deleteCharOffset, &deleteCharLength);
1.4117 + nsCOMPtr<nsIDOMCharacterData> deleteCharData(do_QueryInterface(deleteNode));
1.4118 +
1.4119 + if (NS_SUCCEEDED(res))
1.4120 + {
1.4121 + nsAutoRules beginRulesSniffing(this, EditAction::deleteSelection, aAction);
1.4122 + int32_t i;
1.4123 + // Notify nsIEditActionListener::WillDelete[Selection|Text|Node]
1.4124 + if (!deleteNode)
1.4125 + for (i = 0; i < mActionListeners.Count(); i++)
1.4126 + mActionListeners[i]->WillDeleteSelection(selection);
1.4127 + else if (deleteCharData)
1.4128 + for (i = 0; i < mActionListeners.Count(); i++)
1.4129 + mActionListeners[i]->WillDeleteText(deleteCharData, deleteCharOffset, 1);
1.4130 + else
1.4131 + for (i = 0; i < mActionListeners.Count(); i++)
1.4132 + mActionListeners[i]->WillDeleteNode(deleteNode->AsDOMNode());
1.4133 +
1.4134 + // Delete the specified amount
1.4135 + res = DoTransaction(txn);
1.4136 +
1.4137 + // Notify nsIEditActionListener::DidDelete[Selection|Text|Node]
1.4138 + if (!deleteNode)
1.4139 + for (i = 0; i < mActionListeners.Count(); i++)
1.4140 + mActionListeners[i]->DidDeleteSelection(selection);
1.4141 + else if (deleteCharData)
1.4142 + for (i = 0; i < mActionListeners.Count(); i++)
1.4143 + mActionListeners[i]->DidDeleteText(deleteCharData, deleteCharOffset, 1, res);
1.4144 + else
1.4145 + for (i = 0; i < mActionListeners.Count(); i++)
1.4146 + mActionListeners[i]->DidDeleteNode(deleteNode->AsDOMNode(), res);
1.4147 + }
1.4148 +
1.4149 + return res;
1.4150 +}
1.4151 +
1.4152 +// XXX: error handling in this routine needs to be cleaned up!
1.4153 +NS_IMETHODIMP
1.4154 +nsEditor::DeleteSelectionAndCreateNode(const nsAString& aTag,
1.4155 + nsIDOMNode ** aNewNode)
1.4156 +{
1.4157 + nsresult result = DeleteSelectionAndPrepareToCreateNode();
1.4158 + NS_ENSURE_SUCCESS(result, result);
1.4159 +
1.4160 + nsRefPtr<Selection> selection = GetSelection();
1.4161 + NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
1.4162 +
1.4163 + nsCOMPtr<nsINode> node = selection->GetAnchorNode();
1.4164 + uint32_t offset = selection->AnchorOffset();
1.4165 +
1.4166 + nsCOMPtr<nsIDOMNode> newNode;
1.4167 + result = CreateNode(aTag, node->AsDOMNode(), offset,
1.4168 + getter_AddRefs(newNode));
1.4169 + // XXX: ERROR_HANDLING check result, and make sure aNewNode is set correctly
1.4170 + // in success/failure cases
1.4171 + *aNewNode = newNode;
1.4172 + NS_IF_ADDREF(*aNewNode);
1.4173 +
1.4174 + // we want the selection to be just after the new node
1.4175 + return selection->Collapse(node, offset + 1);
1.4176 +}
1.4177 +
1.4178 +
1.4179 +/* Non-interface, protected methods */
1.4180 +
1.4181 +TextComposition*
1.4182 +nsEditor::GetComposition() const
1.4183 +{
1.4184 + return mComposition;
1.4185 +}
1.4186 +
1.4187 +bool
1.4188 +nsEditor::IsIMEComposing() const
1.4189 +{
1.4190 + return mComposition && mComposition->IsComposing();
1.4191 +}
1.4192 +
1.4193 +nsresult
1.4194 +nsEditor::DeleteSelectionAndPrepareToCreateNode()
1.4195 +{
1.4196 + nsresult res;
1.4197 + nsRefPtr<Selection> selection = GetSelection();
1.4198 + NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
1.4199 + MOZ_ASSERT(selection->GetAnchorFocusRange());
1.4200 +
1.4201 + if (!selection->GetAnchorFocusRange()->Collapsed()) {
1.4202 + res = DeleteSelection(nsIEditor::eNone, nsIEditor::eStrip);
1.4203 + NS_ENSURE_SUCCESS(res, res);
1.4204 +
1.4205 + MOZ_ASSERT(selection->GetAnchorFocusRange() &&
1.4206 + selection->GetAnchorFocusRange()->Collapsed(),
1.4207 + "Selection not collapsed after delete");
1.4208 + }
1.4209 +
1.4210 + // If the selection is a chardata node, split it if necessary and compute
1.4211 + // where to put the new node
1.4212 + nsCOMPtr<nsINode> node = selection->GetAnchorNode();
1.4213 + MOZ_ASSERT(node, "Selection has no ranges in it");
1.4214 +
1.4215 + if (node && node->IsNodeOfType(nsINode::eDATA_NODE)) {
1.4216 + NS_ASSERTION(node->GetParentNode(),
1.4217 + "It's impossible to insert into chardata with no parent -- "
1.4218 + "fix the caller");
1.4219 + NS_ENSURE_STATE(node->GetParentNode());
1.4220 +
1.4221 + uint32_t offset = selection->AnchorOffset();
1.4222 +
1.4223 + if (offset == 0) {
1.4224 + res = selection->Collapse(node->GetParentNode(),
1.4225 + node->GetParentNode()->IndexOf(node));
1.4226 + MOZ_ASSERT(NS_SUCCEEDED(res));
1.4227 + NS_ENSURE_SUCCESS(res, res);
1.4228 + } else if (offset == node->Length()) {
1.4229 + res = selection->Collapse(node->GetParentNode(),
1.4230 + node->GetParentNode()->IndexOf(node) + 1);
1.4231 + MOZ_ASSERT(NS_SUCCEEDED(res));
1.4232 + NS_ENSURE_SUCCESS(res, res);
1.4233 + } else {
1.4234 + nsCOMPtr<nsIDOMNode> tmp;
1.4235 + res = SplitNode(node->AsDOMNode(), offset, getter_AddRefs(tmp));
1.4236 + NS_ENSURE_SUCCESS(res, res);
1.4237 + res = selection->Collapse(node->GetParentNode(),
1.4238 + node->GetParentNode()->IndexOf(node));
1.4239 + MOZ_ASSERT(NS_SUCCEEDED(res));
1.4240 + NS_ENSURE_SUCCESS(res, res);
1.4241 + }
1.4242 + }
1.4243 + return NS_OK;
1.4244 +}
1.4245 +
1.4246 +
1.4247 +
1.4248 +void
1.4249 +nsEditor::DoAfterDoTransaction(nsITransaction *aTxn)
1.4250 +{
1.4251 + bool isTransientTransaction;
1.4252 + MOZ_ALWAYS_TRUE(NS_SUCCEEDED(
1.4253 + aTxn->GetIsTransient(&isTransientTransaction)));
1.4254 +
1.4255 + if (!isTransientTransaction)
1.4256 + {
1.4257 + // we need to deal here with the case where the user saved after some
1.4258 + // edits, then undid one or more times. Then, the undo count is -ve,
1.4259 + // but we can't let a do take it back to zero. So we flip it up to
1.4260 + // a +ve number.
1.4261 + int32_t modCount;
1.4262 + GetModificationCount(&modCount);
1.4263 + if (modCount < 0)
1.4264 + modCount = -modCount;
1.4265 +
1.4266 + // don't count transient transactions
1.4267 + MOZ_ALWAYS_TRUE(NS_SUCCEEDED(
1.4268 + IncrementModificationCount(1)));
1.4269 + }
1.4270 +}
1.4271 +
1.4272 +
1.4273 +void
1.4274 +nsEditor::DoAfterUndoTransaction()
1.4275 +{
1.4276 + // all undoable transactions are non-transient
1.4277 + MOZ_ALWAYS_TRUE(NS_SUCCEEDED(
1.4278 + IncrementModificationCount(-1)));
1.4279 +}
1.4280 +
1.4281 +void
1.4282 +nsEditor::DoAfterRedoTransaction()
1.4283 +{
1.4284 + // all redoable transactions are non-transient
1.4285 + MOZ_ALWAYS_TRUE(NS_SUCCEEDED(
1.4286 + IncrementModificationCount(1)));
1.4287 +}
1.4288 +
1.4289 +NS_IMETHODIMP
1.4290 +nsEditor::CreateTxnForSetAttribute(nsIDOMElement *aElement,
1.4291 + const nsAString& aAttribute,
1.4292 + const nsAString& aValue,
1.4293 + ChangeAttributeTxn ** aTxn)
1.4294 +{
1.4295 + NS_ENSURE_TRUE(aElement, NS_ERROR_NULL_POINTER);
1.4296 +
1.4297 + nsRefPtr<ChangeAttributeTxn> txn = new ChangeAttributeTxn();
1.4298 +
1.4299 + nsresult rv = txn->Init(this, aElement, aAttribute, aValue, false);
1.4300 + if (NS_SUCCEEDED(rv))
1.4301 + {
1.4302 + txn.forget(aTxn);
1.4303 + }
1.4304 +
1.4305 + return rv;
1.4306 +}
1.4307 +
1.4308 +
1.4309 +NS_IMETHODIMP
1.4310 +nsEditor::CreateTxnForRemoveAttribute(nsIDOMElement *aElement,
1.4311 + const nsAString& aAttribute,
1.4312 + ChangeAttributeTxn ** aTxn)
1.4313 +{
1.4314 + NS_ENSURE_TRUE(aElement, NS_ERROR_NULL_POINTER);
1.4315 +
1.4316 + nsRefPtr<ChangeAttributeTxn> txn = new ChangeAttributeTxn();
1.4317 +
1.4318 + nsresult rv = txn->Init(this, aElement, aAttribute, EmptyString(), true);
1.4319 + if (NS_SUCCEEDED(rv))
1.4320 + {
1.4321 + txn.forget(aTxn);
1.4322 + }
1.4323 +
1.4324 + return rv;
1.4325 +}
1.4326 +
1.4327 +
1.4328 +NS_IMETHODIMP nsEditor::CreateTxnForCreateElement(const nsAString& aTag,
1.4329 + nsIDOMNode *aParent,
1.4330 + int32_t aPosition,
1.4331 + CreateElementTxn ** aTxn)
1.4332 +{
1.4333 + NS_ENSURE_TRUE(aParent, NS_ERROR_NULL_POINTER);
1.4334 +
1.4335 + nsRefPtr<CreateElementTxn> txn = new CreateElementTxn();
1.4336 +
1.4337 + nsresult rv = txn->Init(this, aTag, aParent, aPosition);
1.4338 + if (NS_SUCCEEDED(rv))
1.4339 + {
1.4340 + txn.forget(aTxn);
1.4341 + }
1.4342 +
1.4343 + return rv;
1.4344 +}
1.4345 +
1.4346 +
1.4347 +NS_IMETHODIMP nsEditor::CreateTxnForInsertElement(nsIDOMNode * aNode,
1.4348 + nsIDOMNode * aParent,
1.4349 + int32_t aPosition,
1.4350 + InsertElementTxn ** aTxn)
1.4351 +{
1.4352 + NS_ENSURE_TRUE(aNode && aParent, NS_ERROR_NULL_POINTER);
1.4353 +
1.4354 + nsRefPtr<InsertElementTxn> txn = new InsertElementTxn();
1.4355 +
1.4356 + nsresult rv = txn->Init(aNode, aParent, aPosition, this);
1.4357 + if (NS_SUCCEEDED(rv))
1.4358 + {
1.4359 + txn.forget(aTxn);
1.4360 + }
1.4361 +
1.4362 + return rv;
1.4363 +}
1.4364 +
1.4365 +nsresult
1.4366 +nsEditor::CreateTxnForDeleteNode(nsINode* aNode, DeleteNodeTxn** aTxn)
1.4367 +{
1.4368 + NS_ENSURE_TRUE(aNode, NS_ERROR_NULL_POINTER);
1.4369 +
1.4370 + nsRefPtr<DeleteNodeTxn> txn = new DeleteNodeTxn();
1.4371 +
1.4372 + nsresult res = txn->Init(this, aNode, &mRangeUpdater);
1.4373 + NS_ENSURE_SUCCESS(res, res);
1.4374 +
1.4375 + txn.forget(aTxn);
1.4376 + return NS_OK;
1.4377 +}
1.4378 +
1.4379 +NS_IMETHODIMP
1.4380 +nsEditor::CreateTxnForIMEText(const nsAString& aStringToInsert,
1.4381 + IMETextTxn ** aTxn)
1.4382 +{
1.4383 + NS_ASSERTION(aTxn, "illegal value- null ptr- aTxn");
1.4384 +
1.4385 + nsRefPtr<IMETextTxn> txn = new IMETextTxn();
1.4386 +
1.4387 + // During handling IME composition, mComposition must have been initialized.
1.4388 + // TODO: We can simplify IMETextTxn::Init() with TextComposition class.
1.4389 + nsresult rv = txn->Init(mIMETextNode, mIMETextOffset,
1.4390 + mComposition->String().Length(),
1.4391 + mComposition->GetRanges(), aStringToInsert, this);
1.4392 + if (NS_SUCCEEDED(rv))
1.4393 + {
1.4394 + txn.forget(aTxn);
1.4395 + }
1.4396 +
1.4397 + return rv;
1.4398 +}
1.4399 +
1.4400 +
1.4401 +NS_IMETHODIMP
1.4402 +nsEditor::CreateTxnForAddStyleSheet(nsCSSStyleSheet* aSheet, AddStyleSheetTxn* *aTxn)
1.4403 +{
1.4404 + nsRefPtr<AddStyleSheetTxn> txn = new AddStyleSheetTxn();
1.4405 +
1.4406 + nsresult rv = txn->Init(this, aSheet);
1.4407 + if (NS_SUCCEEDED(rv))
1.4408 + {
1.4409 + txn.forget(aTxn);
1.4410 + }
1.4411 +
1.4412 + return rv;
1.4413 +}
1.4414 +
1.4415 +
1.4416 +
1.4417 +NS_IMETHODIMP
1.4418 +nsEditor::CreateTxnForRemoveStyleSheet(nsCSSStyleSheet* aSheet, RemoveStyleSheetTxn* *aTxn)
1.4419 +{
1.4420 + nsRefPtr<RemoveStyleSheetTxn> txn = new RemoveStyleSheetTxn();
1.4421 +
1.4422 + nsresult rv = txn->Init(this, aSheet);
1.4423 + if (NS_SUCCEEDED(rv))
1.4424 + {
1.4425 + txn.forget(aTxn);
1.4426 + }
1.4427 +
1.4428 + return rv;
1.4429 +}
1.4430 +
1.4431 +
1.4432 +nsresult
1.4433 +nsEditor::CreateTxnForDeleteSelection(EDirection aAction,
1.4434 + EditAggregateTxn** aTxn,
1.4435 + nsINode** aNode,
1.4436 + int32_t* aOffset,
1.4437 + int32_t* aLength)
1.4438 +{
1.4439 + MOZ_ASSERT(aTxn);
1.4440 + *aTxn = nullptr;
1.4441 +
1.4442 + nsRefPtr<Selection> selection = GetSelection();
1.4443 + NS_ENSURE_STATE(selection);
1.4444 +
1.4445 + // Check whether the selection is collapsed and we should do nothing:
1.4446 + if (selection->Collapsed() && aAction == eNone) {
1.4447 + return NS_OK;
1.4448 + }
1.4449 +
1.4450 + // allocate the out-param transaction
1.4451 + nsRefPtr<EditAggregateTxn> aggTxn = new EditAggregateTxn();
1.4452 +
1.4453 + for (int32_t rangeIdx = 0; rangeIdx < selection->GetRangeCount(); ++rangeIdx) {
1.4454 + nsRefPtr<nsRange> range = selection->GetRangeAt(rangeIdx);
1.4455 + NS_ENSURE_STATE(range);
1.4456 +
1.4457 + // Same with range as with selection; if it is collapsed and action
1.4458 + // is eNone, do nothing.
1.4459 + if (!range->Collapsed()) {
1.4460 + nsRefPtr<DeleteRangeTxn> txn = new DeleteRangeTxn();
1.4461 + txn->Init(this, range, &mRangeUpdater);
1.4462 + aggTxn->AppendChild(txn);
1.4463 + } else if (aAction != eNone) {
1.4464 + // we have an insertion point. delete the thing in front of it or
1.4465 + // behind it, depending on aAction
1.4466 + nsresult res = CreateTxnForDeleteInsertionPoint(range, aAction, aggTxn,
1.4467 + aNode, aOffset, aLength);
1.4468 + NS_ENSURE_SUCCESS(res, res);
1.4469 + }
1.4470 + }
1.4471 +
1.4472 + aggTxn.forget(aTxn);
1.4473 +
1.4474 + return NS_OK;
1.4475 +}
1.4476 +
1.4477 +nsresult
1.4478 +nsEditor::CreateTxnForDeleteCharacter(nsIDOMCharacterData* aData,
1.4479 + uint32_t aOffset,
1.4480 + EDirection aDirection,
1.4481 + DeleteTextTxn** aTxn)
1.4482 +{
1.4483 + NS_ASSERTION(aDirection == eNext || aDirection == ePrevious,
1.4484 + "invalid direction");
1.4485 + nsAutoString data;
1.4486 + aData->GetData(data);
1.4487 + NS_ASSERTION(data.Length(), "Trying to delete from a zero-length node");
1.4488 + NS_ENSURE_STATE(data.Length());
1.4489 +
1.4490 + uint32_t segOffset = aOffset, segLength = 1;
1.4491 + if (aDirection == eNext) {
1.4492 + if (segOffset + 1 < data.Length() &&
1.4493 + NS_IS_HIGH_SURROGATE(data[segOffset]) &&
1.4494 + NS_IS_LOW_SURROGATE(data[segOffset+1])) {
1.4495 + // delete both halves of the surrogate pair
1.4496 + ++segLength;
1.4497 + }
1.4498 + } else if (aOffset > 0) {
1.4499 + --segOffset;
1.4500 + if (segOffset > 0 &&
1.4501 + NS_IS_LOW_SURROGATE(data[segOffset]) &&
1.4502 + NS_IS_HIGH_SURROGATE(data[segOffset-1])) {
1.4503 + ++segLength;
1.4504 + --segOffset;
1.4505 + }
1.4506 + } else {
1.4507 + return NS_ERROR_FAILURE;
1.4508 + }
1.4509 + return CreateTxnForDeleteText(aData, segOffset, segLength, aTxn);
1.4510 +}
1.4511 +
1.4512 +//XXX: currently, this doesn't handle edge conditions because GetNext/GetPrior
1.4513 +//are not implemented
1.4514 +nsresult
1.4515 +nsEditor::CreateTxnForDeleteInsertionPoint(nsRange* aRange,
1.4516 + EDirection aAction,
1.4517 + EditAggregateTxn* aTxn,
1.4518 + nsINode** aNode,
1.4519 + int32_t* aOffset,
1.4520 + int32_t* aLength)
1.4521 +{
1.4522 + MOZ_ASSERT(aAction != eNone);
1.4523 +
1.4524 + nsresult res;
1.4525 +
1.4526 + // get the node and offset of the insertion point
1.4527 + nsCOMPtr<nsINode> node = aRange->GetStartParent();
1.4528 + NS_ENSURE_STATE(node);
1.4529 +
1.4530 + int32_t offset = aRange->StartOffset();
1.4531 +
1.4532 + // determine if the insertion point is at the beginning, middle, or end of
1.4533 + // the node
1.4534 + nsCOMPtr<nsIDOMCharacterData> nodeAsCharData = do_QueryInterface(node);
1.4535 +
1.4536 + uint32_t count = node->Length();
1.4537 +
1.4538 + bool isFirst = (0 == offset);
1.4539 + bool isLast = (count == (uint32_t)offset);
1.4540 +
1.4541 + // XXX: if isFirst && isLast, then we'll need to delete the node
1.4542 + // as well as the 1 child
1.4543 +
1.4544 + // build a transaction for deleting the appropriate data
1.4545 + // XXX: this has to come from rule section
1.4546 + if (aAction == ePrevious && isFirst) {
1.4547 + // we're backspacing from the beginning of the node. Delete the first
1.4548 + // thing to our left
1.4549 + nsCOMPtr<nsIContent> priorNode = GetPriorNode(node, true);
1.4550 + NS_ENSURE_STATE(priorNode);
1.4551 +
1.4552 + // there is a priorNode, so delete its last child (if chardata, delete the
1.4553 + // last char). if it has no children, delete it
1.4554 + nsCOMPtr<nsIDOMCharacterData> priorNodeAsCharData =
1.4555 + do_QueryInterface(priorNode);
1.4556 + if (priorNodeAsCharData) {
1.4557 + uint32_t length = priorNode->Length();
1.4558 + // Bail out for empty chardata XXX: Do we want to do something else?
1.4559 + NS_ENSURE_STATE(length);
1.4560 + nsRefPtr<DeleteTextTxn> txn;
1.4561 + res = CreateTxnForDeleteCharacter(priorNodeAsCharData, length,
1.4562 + ePrevious, getter_AddRefs(txn));
1.4563 + NS_ENSURE_SUCCESS(res, res);
1.4564 +
1.4565 + *aOffset = txn->GetOffset();
1.4566 + *aLength = txn->GetNumCharsToDelete();
1.4567 + aTxn->AppendChild(txn);
1.4568 + } else {
1.4569 + // priorNode is not chardata, so tell its parent to delete it
1.4570 + nsRefPtr<DeleteNodeTxn> txn;
1.4571 + res = CreateTxnForDeleteNode(priorNode, getter_AddRefs(txn));
1.4572 + NS_ENSURE_SUCCESS(res, res);
1.4573 +
1.4574 + aTxn->AppendChild(txn);
1.4575 + }
1.4576 +
1.4577 + NS_ADDREF(*aNode = priorNode);
1.4578 +
1.4579 + return NS_OK;
1.4580 + }
1.4581 +
1.4582 + if (aAction == eNext && isLast) {
1.4583 + // we're deleting from the end of the node. Delete the first thing to our
1.4584 + // right
1.4585 + nsCOMPtr<nsIContent> nextNode = GetNextNode(node, true);
1.4586 + NS_ENSURE_STATE(nextNode);
1.4587 +
1.4588 + // there is a nextNode, so delete its first child (if chardata, delete the
1.4589 + // first char). if it has no children, delete it
1.4590 + nsCOMPtr<nsIDOMCharacterData> nextNodeAsCharData =
1.4591 + do_QueryInterface(nextNode);
1.4592 + if (nextNodeAsCharData) {
1.4593 + uint32_t length = nextNode->Length();
1.4594 + // Bail out for empty chardata XXX: Do we want to do something else?
1.4595 + NS_ENSURE_STATE(length);
1.4596 + nsRefPtr<DeleteTextTxn> txn;
1.4597 + res = CreateTxnForDeleteCharacter(nextNodeAsCharData, 0, eNext,
1.4598 + getter_AddRefs(txn));
1.4599 + NS_ENSURE_SUCCESS(res, res);
1.4600 +
1.4601 + *aOffset = txn->GetOffset();
1.4602 + *aLength = txn->GetNumCharsToDelete();
1.4603 + aTxn->AppendChild(txn);
1.4604 + } else {
1.4605 + // nextNode is not chardata, so tell its parent to delete it
1.4606 + nsRefPtr<DeleteNodeTxn> txn;
1.4607 + res = CreateTxnForDeleteNode(nextNode, getter_AddRefs(txn));
1.4608 + NS_ENSURE_SUCCESS(res, res);
1.4609 + aTxn->AppendChild(txn);
1.4610 + }
1.4611 +
1.4612 + NS_ADDREF(*aNode = nextNode);
1.4613 +
1.4614 + return NS_OK;
1.4615 + }
1.4616 +
1.4617 + if (nodeAsCharData) {
1.4618 + // we have chardata, so delete a char at the proper offset
1.4619 + nsRefPtr<DeleteTextTxn> txn;
1.4620 + res = CreateTxnForDeleteCharacter(nodeAsCharData, offset, aAction,
1.4621 + getter_AddRefs(txn));
1.4622 + NS_ENSURE_SUCCESS(res, res);
1.4623 +
1.4624 + aTxn->AppendChild(txn);
1.4625 + NS_ADDREF(*aNode = node);
1.4626 + *aOffset = txn->GetOffset();
1.4627 + *aLength = txn->GetNumCharsToDelete();
1.4628 + } else {
1.4629 + // we're either deleting a node or chardata, need to dig into the next/prev
1.4630 + // node to find out
1.4631 + nsCOMPtr<nsINode> selectedNode;
1.4632 + if (aAction == ePrevious) {
1.4633 + selectedNode = GetPriorNode(node, offset, true);
1.4634 + } else if (aAction == eNext) {
1.4635 + selectedNode = GetNextNode(node, offset, true);
1.4636 + }
1.4637 +
1.4638 + while (selectedNode &&
1.4639 + selectedNode->IsNodeOfType(nsINode::eDATA_NODE) &&
1.4640 + !selectedNode->Length()) {
1.4641 + // Can't delete an empty chardata node (bug 762183)
1.4642 + if (aAction == ePrevious) {
1.4643 + selectedNode = GetPriorNode(selectedNode, true);
1.4644 + } else if (aAction == eNext) {
1.4645 + selectedNode = GetNextNode(selectedNode, true);
1.4646 + }
1.4647 + }
1.4648 + NS_ENSURE_STATE(selectedNode);
1.4649 +
1.4650 + nsCOMPtr<nsIDOMCharacterData> selectedNodeAsCharData =
1.4651 + do_QueryInterface(selectedNode);
1.4652 + if (selectedNodeAsCharData) {
1.4653 + // we are deleting from a chardata node, so do a character deletion
1.4654 + uint32_t position = 0;
1.4655 + if (aAction == ePrevious) {
1.4656 + position = selectedNode->Length();
1.4657 + }
1.4658 + nsRefPtr<DeleteTextTxn> delTextTxn;
1.4659 + res = CreateTxnForDeleteCharacter(selectedNodeAsCharData, position,
1.4660 + aAction, getter_AddRefs(delTextTxn));
1.4661 + NS_ENSURE_SUCCESS(res, res);
1.4662 + NS_ENSURE_TRUE(delTextTxn, NS_ERROR_NULL_POINTER);
1.4663 +
1.4664 + aTxn->AppendChild(delTextTxn);
1.4665 + *aOffset = delTextTxn->GetOffset();
1.4666 + *aLength = delTextTxn->GetNumCharsToDelete();
1.4667 + } else {
1.4668 + nsRefPtr<DeleteNodeTxn> delElementTxn;
1.4669 + res = CreateTxnForDeleteNode(selectedNode, getter_AddRefs(delElementTxn));
1.4670 + NS_ENSURE_SUCCESS(res, res);
1.4671 + NS_ENSURE_TRUE(delElementTxn, NS_ERROR_NULL_POINTER);
1.4672 +
1.4673 + aTxn->AppendChild(delElementTxn);
1.4674 + }
1.4675 +
1.4676 + NS_ADDREF(*aNode = selectedNode);
1.4677 + }
1.4678 +
1.4679 + return NS_OK;
1.4680 +}
1.4681 +
1.4682 +nsresult
1.4683 +nsEditor::CreateRange(nsIDOMNode *aStartParent, int32_t aStartOffset,
1.4684 + nsIDOMNode *aEndParent, int32_t aEndOffset,
1.4685 + nsIDOMRange **aRange)
1.4686 +{
1.4687 + return nsRange::CreateRange(aStartParent, aStartOffset, aEndParent,
1.4688 + aEndOffset, aRange);
1.4689 +}
1.4690 +
1.4691 +nsresult
1.4692 +nsEditor::AppendNodeToSelectionAsRange(nsIDOMNode *aNode)
1.4693 +{
1.4694 + NS_ENSURE_TRUE(aNode, NS_ERROR_NULL_POINTER);
1.4695 + nsCOMPtr<nsISelection> selection;
1.4696 + nsresult res = GetSelection(getter_AddRefs(selection));
1.4697 + NS_ENSURE_SUCCESS(res, res);
1.4698 + if(!selection) return NS_ERROR_FAILURE;
1.4699 +
1.4700 + nsCOMPtr<nsIDOMNode> parentNode;
1.4701 + res = aNode->GetParentNode(getter_AddRefs(parentNode));
1.4702 + NS_ENSURE_SUCCESS(res, res);
1.4703 + NS_ENSURE_TRUE(parentNode, NS_ERROR_NULL_POINTER);
1.4704 +
1.4705 + int32_t offset = GetChildOffset(aNode, parentNode);
1.4706 +
1.4707 + nsCOMPtr<nsIDOMRange> range;
1.4708 + res = CreateRange(parentNode, offset, parentNode, offset+1, getter_AddRefs(range));
1.4709 + NS_ENSURE_SUCCESS(res, res);
1.4710 + NS_ENSURE_TRUE(range, NS_ERROR_NULL_POINTER);
1.4711 +
1.4712 + return selection->AddRange(range);
1.4713 +}
1.4714 +
1.4715 +nsresult nsEditor::ClearSelection()
1.4716 +{
1.4717 + nsCOMPtr<nsISelection> selection;
1.4718 + nsresult res = nsEditor::GetSelection(getter_AddRefs(selection));
1.4719 + NS_ENSURE_SUCCESS(res, res);
1.4720 + NS_ENSURE_TRUE(selection, NS_ERROR_FAILURE);
1.4721 + return selection->RemoveAllRanges();
1.4722 +}
1.4723 +
1.4724 +nsresult
1.4725 +nsEditor::CreateHTMLContent(const nsAString& aTag, dom::Element** aContent)
1.4726 +{
1.4727 + nsCOMPtr<nsIDocument> doc = GetDocument();
1.4728 + NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
1.4729 +
1.4730 + // XXX Wallpaper over editor bug (editor tries to create elements with an
1.4731 + // empty nodename).
1.4732 + if (aTag.IsEmpty()) {
1.4733 + NS_ERROR("Don't pass an empty tag to nsEditor::CreateHTMLContent, "
1.4734 + "check caller.");
1.4735 + return NS_ERROR_FAILURE;
1.4736 + }
1.4737 +
1.4738 + return doc->CreateElem(aTag, nullptr, kNameSpaceID_XHTML,
1.4739 + reinterpret_cast<nsIContent**>(aContent));
1.4740 +}
1.4741 +
1.4742 +nsresult
1.4743 +nsEditor::SetAttributeOrEquivalent(nsIDOMElement * aElement,
1.4744 + const nsAString & aAttribute,
1.4745 + const nsAString & aValue,
1.4746 + bool aSuppressTransaction)
1.4747 +{
1.4748 + return SetAttribute(aElement, aAttribute, aValue);
1.4749 +}
1.4750 +
1.4751 +nsresult
1.4752 +nsEditor::RemoveAttributeOrEquivalent(nsIDOMElement * aElement,
1.4753 + const nsAString & aAttribute,
1.4754 + bool aSuppressTransaction)
1.4755 +{
1.4756 + return RemoveAttribute(aElement, aAttribute);
1.4757 +}
1.4758 +
1.4759 +nsresult
1.4760 +nsEditor::HandleKeyPressEvent(nsIDOMKeyEvent* aKeyEvent)
1.4761 +{
1.4762 + // NOTE: When you change this method, you should also change:
1.4763 + // * editor/libeditor/text/tests/test_texteditor_keyevent_handling.html
1.4764 + // * editor/libeditor/html/tests/test_htmleditor_keyevent_handling.html
1.4765 + //
1.4766 + // And also when you add new key handling, you need to change the subclass's
1.4767 + // HandleKeyPressEvent()'s switch statement.
1.4768 +
1.4769 + WidgetKeyboardEvent* nativeKeyEvent =
1.4770 + aKeyEvent->GetInternalNSEvent()->AsKeyboardEvent();
1.4771 + NS_ENSURE_TRUE(nativeKeyEvent, NS_ERROR_UNEXPECTED);
1.4772 + NS_ASSERTION(nativeKeyEvent->message == NS_KEY_PRESS,
1.4773 + "HandleKeyPressEvent gets non-keypress event");
1.4774 +
1.4775 + // if we are readonly or disabled, then do nothing.
1.4776 + if (IsReadonly() || IsDisabled()) {
1.4777 + // consume backspace for disabled and readonly textfields, to prevent
1.4778 + // back in history, which could be confusing to users
1.4779 + if (nativeKeyEvent->keyCode == nsIDOMKeyEvent::DOM_VK_BACK_SPACE) {
1.4780 + aKeyEvent->PreventDefault();
1.4781 + }
1.4782 + return NS_OK;
1.4783 + }
1.4784 +
1.4785 + switch (nativeKeyEvent->keyCode) {
1.4786 + case nsIDOMKeyEvent::DOM_VK_META:
1.4787 + case nsIDOMKeyEvent::DOM_VK_WIN:
1.4788 + case nsIDOMKeyEvent::DOM_VK_SHIFT:
1.4789 + case nsIDOMKeyEvent::DOM_VK_CONTROL:
1.4790 + case nsIDOMKeyEvent::DOM_VK_ALT:
1.4791 + aKeyEvent->PreventDefault(); // consumed
1.4792 + return NS_OK;
1.4793 + case nsIDOMKeyEvent::DOM_VK_BACK_SPACE:
1.4794 + if (nativeKeyEvent->IsControl() || nativeKeyEvent->IsAlt() ||
1.4795 + nativeKeyEvent->IsMeta() || nativeKeyEvent->IsOS()) {
1.4796 + return NS_OK;
1.4797 + }
1.4798 + DeleteSelection(nsIEditor::ePrevious, nsIEditor::eStrip);
1.4799 + aKeyEvent->PreventDefault(); // consumed
1.4800 + return NS_OK;
1.4801 + case nsIDOMKeyEvent::DOM_VK_DELETE:
1.4802 + // on certain platforms (such as windows) the shift key
1.4803 + // modifies what delete does (cmd_cut in this case).
1.4804 + // bailing here to allow the keybindings to do the cut.
1.4805 + if (nativeKeyEvent->IsShift() || nativeKeyEvent->IsControl() ||
1.4806 + nativeKeyEvent->IsAlt() || nativeKeyEvent->IsMeta() ||
1.4807 + nativeKeyEvent->IsOS()) {
1.4808 + return NS_OK;
1.4809 + }
1.4810 + DeleteSelection(nsIEditor::eNext, nsIEditor::eStrip);
1.4811 + aKeyEvent->PreventDefault(); // consumed
1.4812 + return NS_OK;
1.4813 + }
1.4814 + return NS_OK;
1.4815 +}
1.4816 +
1.4817 +nsresult
1.4818 +nsEditor::HandleInlineSpellCheck(EditAction action,
1.4819 + nsISelection *aSelection,
1.4820 + nsIDOMNode *previousSelectedNode,
1.4821 + int32_t previousSelectedOffset,
1.4822 + nsIDOMNode *aStartNode,
1.4823 + int32_t aStartOffset,
1.4824 + nsIDOMNode *aEndNode,
1.4825 + int32_t aEndOffset)
1.4826 +{
1.4827 + // Have to cast action here because this method is from an IDL
1.4828 + return mInlineSpellChecker ? mInlineSpellChecker->SpellCheckAfterEditorChange(
1.4829 + (int32_t)action, aSelection,
1.4830 + previousSelectedNode, previousSelectedOffset,
1.4831 + aStartNode, aStartOffset, aEndNode,
1.4832 + aEndOffset)
1.4833 + : NS_OK;
1.4834 +}
1.4835 +
1.4836 +already_AddRefed<nsIContent>
1.4837 +nsEditor::FindSelectionRoot(nsINode *aNode)
1.4838 +{
1.4839 + nsCOMPtr<nsIContent> rootContent = GetRoot();
1.4840 + return rootContent.forget();
1.4841 +}
1.4842 +
1.4843 +nsresult
1.4844 +nsEditor::InitializeSelection(nsIDOMEventTarget* aFocusEventTarget)
1.4845 +{
1.4846 + nsCOMPtr<nsINode> targetNode = do_QueryInterface(aFocusEventTarget);
1.4847 + NS_ENSURE_TRUE(targetNode, NS_ERROR_INVALID_ARG);
1.4848 + nsCOMPtr<nsIContent> selectionRootContent = FindSelectionRoot(targetNode);
1.4849 + if (!selectionRootContent) {
1.4850 + return NS_OK;
1.4851 + }
1.4852 +
1.4853 + bool isTargetDoc =
1.4854 + targetNode->NodeType() == nsIDOMNode::DOCUMENT_NODE &&
1.4855 + targetNode->HasFlag(NODE_IS_EDITABLE);
1.4856 +
1.4857 + nsCOMPtr<nsISelection> selection;
1.4858 + nsresult rv = GetSelection(getter_AddRefs(selection));
1.4859 + NS_ENSURE_SUCCESS(rv, rv);
1.4860 +
1.4861 + nsCOMPtr<nsIPresShell> presShell = GetPresShell();
1.4862 + NS_ENSURE_TRUE(presShell, NS_ERROR_NOT_INITIALIZED);
1.4863 +
1.4864 + nsCOMPtr<nsISelectionController> selCon;
1.4865 + rv = GetSelectionController(getter_AddRefs(selCon));
1.4866 + NS_ENSURE_SUCCESS(rv, rv);
1.4867 +
1.4868 + nsCOMPtr<nsISelectionPrivate> selectionPrivate =
1.4869 + do_QueryInterface(selection);
1.4870 + NS_ENSURE_TRUE(selectionPrivate, NS_ERROR_UNEXPECTED);
1.4871 +
1.4872 + // Init the caret
1.4873 + nsRefPtr<nsCaret> caret = presShell->GetCaret();
1.4874 + NS_ENSURE_TRUE(caret, NS_ERROR_UNEXPECTED);
1.4875 + caret->SetIgnoreUserModify(false);
1.4876 + caret->SetCaretDOMSelection(selection);
1.4877 + selCon->SetCaretReadOnly(IsReadonly());
1.4878 + selCon->SetCaretEnabled(true);
1.4879 +
1.4880 + // Init selection
1.4881 + selCon->SetDisplaySelection(nsISelectionController::SELECTION_ON);
1.4882 + selCon->SetSelectionFlags(nsISelectionDisplay::DISPLAY_ALL);
1.4883 + selCon->RepaintSelection(nsISelectionController::SELECTION_NORMAL);
1.4884 + // If the computed selection root isn't root content, we should set it
1.4885 + // as selection ancestor limit. However, if that is root element, it means
1.4886 + // there is not limitation of the selection, then, we must set nullptr.
1.4887 + // NOTE: If we set a root element to the ancestor limit, some selection
1.4888 + // methods don't work fine.
1.4889 + if (selectionRootContent->GetParent()) {
1.4890 + selectionPrivate->SetAncestorLimiter(selectionRootContent);
1.4891 + } else {
1.4892 + selectionPrivate->SetAncestorLimiter(nullptr);
1.4893 + }
1.4894 +
1.4895 + // XXX What case needs this?
1.4896 + if (isTargetDoc) {
1.4897 + int32_t rangeCount;
1.4898 + selection->GetRangeCount(&rangeCount);
1.4899 + if (rangeCount == 0) {
1.4900 + BeginningOfDocument();
1.4901 + }
1.4902 + }
1.4903 +
1.4904 + return NS_OK;
1.4905 +}
1.4906 +
1.4907 +void
1.4908 +nsEditor::FinalizeSelection()
1.4909 +{
1.4910 + nsCOMPtr<nsISelectionController> selCon;
1.4911 + nsresult rv = GetSelectionController(getter_AddRefs(selCon));
1.4912 + NS_ENSURE_SUCCESS_VOID(rv);
1.4913 +
1.4914 + nsCOMPtr<nsISelection> selection;
1.4915 + rv = selCon->GetSelection(nsISelectionController::SELECTION_NORMAL,
1.4916 + getter_AddRefs(selection));
1.4917 + NS_ENSURE_SUCCESS_VOID(rv);
1.4918 +
1.4919 + nsCOMPtr<nsISelectionPrivate> selectionPrivate = do_QueryInterface(selection);
1.4920 + NS_ENSURE_TRUE_VOID(selectionPrivate);
1.4921 +
1.4922 + selectionPrivate->SetAncestorLimiter(nullptr);
1.4923 +
1.4924 + nsCOMPtr<nsIPresShell> presShell = GetPresShell();
1.4925 + NS_ENSURE_TRUE_VOID(presShell);
1.4926 +
1.4927 + selCon->SetCaretEnabled(false);
1.4928 +
1.4929 + nsFocusManager* fm = nsFocusManager::GetFocusManager();
1.4930 + NS_ENSURE_TRUE_VOID(fm);
1.4931 + fm->UpdateCaretForCaretBrowsingMode();
1.4932 +
1.4933 + if (!HasIndependentSelection()) {
1.4934 + // If this editor doesn't have an independent selection, i.e., it must
1.4935 + // mean that it is an HTML editor, the selection controller is shared with
1.4936 + // presShell. So, even this editor loses focus, other part of the document
1.4937 + // may still have focus.
1.4938 + nsCOMPtr<nsIDocument> doc = GetDocument();
1.4939 + ErrorResult ret;
1.4940 + if (!doc || !doc->HasFocus(ret)) {
1.4941 + // If the document already lost focus, mark the selection as disabled.
1.4942 + selCon->SetDisplaySelection(nsISelectionController::SELECTION_DISABLED);
1.4943 + } else {
1.4944 + // Otherwise, mark selection as normal because outside of a
1.4945 + // contenteditable element should be selected with normal selection
1.4946 + // color after here.
1.4947 + selCon->SetDisplaySelection(nsISelectionController::SELECTION_ON);
1.4948 + }
1.4949 + } else if (IsFormWidget() || IsPasswordEditor() ||
1.4950 + IsReadonly() || IsDisabled() || IsInputFiltered()) {
1.4951 + // In <input> or <textarea>, the independent selection should be hidden
1.4952 + // while this editor doesn't have focus.
1.4953 + selCon->SetDisplaySelection(nsISelectionController::SELECTION_HIDDEN);
1.4954 + } else {
1.4955 + // Otherwise, although we're not sure how this case happens, the
1.4956 + // independent selection should be marked as disabled.
1.4957 + selCon->SetDisplaySelection(nsISelectionController::SELECTION_DISABLED);
1.4958 + }
1.4959 +
1.4960 + selCon->RepaintSelection(nsISelectionController::SELECTION_NORMAL);
1.4961 +}
1.4962 +
1.4963 +dom::Element *
1.4964 +nsEditor::GetRoot()
1.4965 +{
1.4966 + if (!mRootElement)
1.4967 + {
1.4968 + nsCOMPtr<nsIDOMElement> root;
1.4969 +
1.4970 + // Let GetRootElement() do the work
1.4971 + GetRootElement(getter_AddRefs(root));
1.4972 + }
1.4973 +
1.4974 + return mRootElement;
1.4975 +}
1.4976 +
1.4977 +dom::Element*
1.4978 +nsEditor::GetEditorRoot()
1.4979 +{
1.4980 + return GetRoot();
1.4981 +}
1.4982 +
1.4983 +Element*
1.4984 +nsEditor::GetExposedRoot()
1.4985 +{
1.4986 + Element* rootElement = GetRoot();
1.4987 +
1.4988 + // For plaintext editors, we need to ask the input/textarea element directly.
1.4989 + if (rootElement && rootElement->IsRootOfNativeAnonymousSubtree()) {
1.4990 + rootElement = rootElement->GetParent()->AsElement();
1.4991 + }
1.4992 +
1.4993 + return rootElement;
1.4994 +}
1.4995 +
1.4996 +nsresult
1.4997 +nsEditor::DetermineCurrentDirection()
1.4998 +{
1.4999 + // Get the current root direction from its frame
1.5000 + nsIContent* rootElement = GetExposedRoot();
1.5001 +
1.5002 + // If we don't have an explicit direction, determine our direction
1.5003 + // from the content's direction
1.5004 + if (!(mFlags & (nsIPlaintextEditor::eEditorLeftToRight |
1.5005 + nsIPlaintextEditor::eEditorRightToLeft))) {
1.5006 +
1.5007 + nsIFrame* frame = rootElement->GetPrimaryFrame();
1.5008 + NS_ENSURE_TRUE(frame, NS_ERROR_FAILURE);
1.5009 +
1.5010 + // Set the flag here, to enable us to use the same code path below.
1.5011 + // It will be flipped before returning from the function.
1.5012 + if (frame->StyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL) {
1.5013 + mFlags |= nsIPlaintextEditor::eEditorRightToLeft;
1.5014 + } else {
1.5015 + mFlags |= nsIPlaintextEditor::eEditorLeftToRight;
1.5016 + }
1.5017 + }
1.5018 +
1.5019 + return NS_OK;
1.5020 +}
1.5021 +
1.5022 +NS_IMETHODIMP
1.5023 +nsEditor::SwitchTextDirection()
1.5024 +{
1.5025 + // Get the current root direction from its frame
1.5026 + nsIContent* rootElement = GetExposedRoot();
1.5027 +
1.5028 + nsresult rv = DetermineCurrentDirection();
1.5029 + NS_ENSURE_SUCCESS(rv, rv);
1.5030 +
1.5031 + // Apply the opposite direction
1.5032 + if (mFlags & nsIPlaintextEditor::eEditorRightToLeft) {
1.5033 + NS_ASSERTION(!(mFlags & nsIPlaintextEditor::eEditorLeftToRight),
1.5034 + "Unexpected mutually exclusive flag");
1.5035 + mFlags &= ~nsIPlaintextEditor::eEditorRightToLeft;
1.5036 + mFlags |= nsIPlaintextEditor::eEditorLeftToRight;
1.5037 + rv = rootElement->SetAttr(kNameSpaceID_None, nsGkAtoms::dir, NS_LITERAL_STRING("ltr"), true);
1.5038 + } else if (mFlags & nsIPlaintextEditor::eEditorLeftToRight) {
1.5039 + NS_ASSERTION(!(mFlags & nsIPlaintextEditor::eEditorRightToLeft),
1.5040 + "Unexpected mutually exclusive flag");
1.5041 + mFlags |= nsIPlaintextEditor::eEditorRightToLeft;
1.5042 + mFlags &= ~nsIPlaintextEditor::eEditorLeftToRight;
1.5043 + rv = rootElement->SetAttr(kNameSpaceID_None, nsGkAtoms::dir, NS_LITERAL_STRING("rtl"), true);
1.5044 + }
1.5045 +
1.5046 + if (NS_SUCCEEDED(rv)) {
1.5047 + FireInputEvent();
1.5048 + }
1.5049 +
1.5050 + return rv;
1.5051 +}
1.5052 +
1.5053 +void
1.5054 +nsEditor::SwitchTextDirectionTo(uint32_t aDirection)
1.5055 +{
1.5056 + // Get the current root direction from its frame
1.5057 + nsIContent* rootElement = GetExposedRoot();
1.5058 +
1.5059 + nsresult rv = DetermineCurrentDirection();
1.5060 + NS_ENSURE_SUCCESS_VOID(rv);
1.5061 +
1.5062 + // Apply the requested direction
1.5063 + if (aDirection == nsIPlaintextEditor::eEditorLeftToRight &&
1.5064 + (mFlags & nsIPlaintextEditor::eEditorRightToLeft)) {
1.5065 + NS_ASSERTION(!(mFlags & nsIPlaintextEditor::eEditorLeftToRight),
1.5066 + "Unexpected mutually exclusive flag");
1.5067 + mFlags &= ~nsIPlaintextEditor::eEditorRightToLeft;
1.5068 + mFlags |= nsIPlaintextEditor::eEditorLeftToRight;
1.5069 + rv = rootElement->SetAttr(kNameSpaceID_None, nsGkAtoms::dir, NS_LITERAL_STRING("ltr"), true);
1.5070 + } else if (aDirection == nsIPlaintextEditor::eEditorRightToLeft &&
1.5071 + (mFlags & nsIPlaintextEditor::eEditorLeftToRight)) {
1.5072 + NS_ASSERTION(!(mFlags & nsIPlaintextEditor::eEditorRightToLeft),
1.5073 + "Unexpected mutually exclusive flag");
1.5074 + mFlags |= nsIPlaintextEditor::eEditorRightToLeft;
1.5075 + mFlags &= ~nsIPlaintextEditor::eEditorLeftToRight;
1.5076 + rv = rootElement->SetAttr(kNameSpaceID_None, nsGkAtoms::dir, NS_LITERAL_STRING("rtl"), true);
1.5077 + }
1.5078 +
1.5079 + if (NS_SUCCEEDED(rv)) {
1.5080 + FireInputEvent();
1.5081 + }
1.5082 +}
1.5083 +
1.5084 +#if DEBUG_JOE
1.5085 +void
1.5086 +nsEditor::DumpNode(nsIDOMNode *aNode, int32_t indent)
1.5087 +{
1.5088 + int32_t i;
1.5089 + for (i=0; i<indent; i++)
1.5090 + printf(" ");
1.5091 +
1.5092 + nsCOMPtr<nsIDOMElement> element = do_QueryInterface(aNode);
1.5093 + nsCOMPtr<nsIDOMDocumentFragment> docfrag = do_QueryInterface(aNode);
1.5094 +
1.5095 + if (element || docfrag)
1.5096 + {
1.5097 + if (element)
1.5098 + {
1.5099 + nsAutoString tag;
1.5100 + element->GetTagName(tag);
1.5101 + printf("<%s>\n", NS_LossyConvertUTF16toASCII(tag).get());
1.5102 + }
1.5103 + else
1.5104 + {
1.5105 + printf("<document fragment>\n");
1.5106 + }
1.5107 + nsCOMPtr<nsIDOMNodeList> childList;
1.5108 + aNode->GetChildNodes(getter_AddRefs(childList));
1.5109 + NS_ENSURE_TRUE(childList, NS_ERROR_NULL_POINTER);
1.5110 + uint32_t numChildren;
1.5111 + childList->GetLength(&numChildren);
1.5112 + nsCOMPtr<nsIDOMNode> child, tmp;
1.5113 + aNode->GetFirstChild(getter_AddRefs(child));
1.5114 + for (i=0; i<numChildren; i++)
1.5115 + {
1.5116 + DumpNode(child, indent+1);
1.5117 + child->GetNextSibling(getter_AddRefs(tmp));
1.5118 + child = tmp;
1.5119 + }
1.5120 + }
1.5121 + else if (IsTextNode(aNode))
1.5122 + {
1.5123 + nsCOMPtr<nsIDOMCharacterData> textNode = do_QueryInterface(aNode);
1.5124 + nsAutoString str;
1.5125 + textNode->GetData(str);
1.5126 + nsAutoCString cstr;
1.5127 + LossyCopyUTF16toASCII(str, cstr);
1.5128 + cstr.ReplaceChar('\n', ' ');
1.5129 + printf("<textnode> %s\n", cstr.get());
1.5130 + }
1.5131 +}
1.5132 +#endif
1.5133 +
1.5134 +bool
1.5135 +nsEditor::IsModifiableNode(nsIDOMNode *aNode)
1.5136 +{
1.5137 + return true;
1.5138 +}
1.5139 +
1.5140 +bool
1.5141 +nsEditor::IsModifiableNode(nsINode *aNode)
1.5142 +{
1.5143 + return true;
1.5144 +}
1.5145 +
1.5146 +already_AddRefed<nsIContent>
1.5147 +nsEditor::GetFocusedContent()
1.5148 +{
1.5149 + nsCOMPtr<nsIDOMEventTarget> piTarget = GetDOMEventTarget();
1.5150 + if (!piTarget) {
1.5151 + return nullptr;
1.5152 + }
1.5153 +
1.5154 + nsFocusManager* fm = nsFocusManager::GetFocusManager();
1.5155 + NS_ENSURE_TRUE(fm, nullptr);
1.5156 +
1.5157 + nsCOMPtr<nsIContent> content = fm->GetFocusedContent();
1.5158 + return SameCOMIdentity(content, piTarget) ? content.forget() : nullptr;
1.5159 +}
1.5160 +
1.5161 +already_AddRefed<nsIContent>
1.5162 +nsEditor::GetFocusedContentForIME()
1.5163 +{
1.5164 + return GetFocusedContent();
1.5165 +}
1.5166 +
1.5167 +bool
1.5168 +nsEditor::IsActiveInDOMWindow()
1.5169 +{
1.5170 + nsCOMPtr<nsIDOMEventTarget> piTarget = GetDOMEventTarget();
1.5171 + if (!piTarget) {
1.5172 + return false;
1.5173 + }
1.5174 +
1.5175 + nsFocusManager* fm = nsFocusManager::GetFocusManager();
1.5176 + NS_ENSURE_TRUE(fm, false);
1.5177 +
1.5178 + nsCOMPtr<nsIDocument> doc = do_QueryReferent(mDocWeak);
1.5179 + nsPIDOMWindow* ourWindow = doc->GetWindow();
1.5180 + nsCOMPtr<nsPIDOMWindow> win;
1.5181 + nsIContent* content =
1.5182 + nsFocusManager::GetFocusedDescendant(ourWindow, false,
1.5183 + getter_AddRefs(win));
1.5184 + return SameCOMIdentity(content, piTarget);
1.5185 +}
1.5186 +
1.5187 +bool
1.5188 +nsEditor::IsAcceptableInputEvent(nsIDOMEvent* aEvent)
1.5189 +{
1.5190 + // If the event is trusted, the event should always cause input.
1.5191 + NS_ENSURE_TRUE(aEvent, false);
1.5192 +
1.5193 + // If this is mouse event but this editor doesn't have focus, we shouldn't
1.5194 + // handle it.
1.5195 + nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aEvent);
1.5196 + if (mouseEvent) {
1.5197 + nsCOMPtr<nsIContent> focusedContent = GetFocusedContent();
1.5198 + if (!focusedContent) {
1.5199 + return false;
1.5200 + }
1.5201 + } else {
1.5202 + nsAutoString eventType;
1.5203 + aEvent->GetType(eventType);
1.5204 + // If composition event or text event isn't dispatched via widget,
1.5205 + // we need to ignore them since they cannot be managed by TextComposition.
1.5206 + // E.g., the event was created by chrome JS.
1.5207 + // Note that if we allow to handle such events, editor may be confused by
1.5208 + // strange event order.
1.5209 + if (eventType.EqualsLiteral("text") ||
1.5210 + eventType.EqualsLiteral("compositionstart") ||
1.5211 + eventType.EqualsLiteral("compositionend")) {
1.5212 + WidgetGUIEvent* widgetGUIEvent =
1.5213 + aEvent->GetInternalNSEvent()->AsGUIEvent();
1.5214 + if (!widgetGUIEvent || !widgetGUIEvent->widget) {
1.5215 + return false;
1.5216 + }
1.5217 + }
1.5218 + }
1.5219 +
1.5220 + bool isTrusted;
1.5221 + nsresult rv = aEvent->GetIsTrusted(&isTrusted);
1.5222 + NS_ENSURE_SUCCESS(rv, false);
1.5223 + if (isTrusted) {
1.5224 + return true;
1.5225 + }
1.5226 +
1.5227 + // Ignore untrusted mouse event.
1.5228 + // XXX Why are we handling other untrusted input events?
1.5229 + if (mouseEvent) {
1.5230 + return false;
1.5231 + }
1.5232 +
1.5233 + // Otherwise, we shouldn't handle any input events when we're not an active
1.5234 + // element of the DOM window.
1.5235 + return IsActiveInDOMWindow();
1.5236 +}
1.5237 +
1.5238 +void
1.5239 +nsEditor::OnFocus(nsIDOMEventTarget* aFocusEventTarget)
1.5240 +{
1.5241 + InitializeSelection(aFocusEventTarget);
1.5242 + if (mInlineSpellChecker) {
1.5243 + mInlineSpellChecker->UpdateCurrentDictionary();
1.5244 + }
1.5245 +}
1.5246 +
1.5247 +NS_IMETHODIMP
1.5248 +nsEditor::GetSuppressDispatchingInputEvent(bool *aSuppressed)
1.5249 +{
1.5250 + NS_ENSURE_ARG_POINTER(aSuppressed);
1.5251 + *aSuppressed = !mDispatchInputEvent;
1.5252 + return NS_OK;
1.5253 +}
1.5254 +
1.5255 +NS_IMETHODIMP
1.5256 +nsEditor::SetSuppressDispatchingInputEvent(bool aSuppress)
1.5257 +{
1.5258 + mDispatchInputEvent = !aSuppress;
1.5259 + return NS_OK;
1.5260 +}
