1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/xul/tree/nsTreeBodyFrame.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,4687 @@
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/AsyncEventDispatcher.h"
1.10 +#include "mozilla/ContentEvents.h"
1.11 +#include "mozilla/DebugOnly.h"
1.12 +#include "mozilla/EventDispatcher.h"
1.13 +#include "mozilla/MathAlgorithms.h"
1.14 +#include "mozilla/MouseEvents.h"
1.15 +#include "mozilla/Likely.h"
1.16 +
1.17 +#include "nsCOMPtr.h"
1.18 +#include "nsPresContext.h"
1.19 +#include "nsNameSpaceManager.h"
1.20 +
1.21 +#include "nsTreeBodyFrame.h"
1.22 +#include "nsTreeSelection.h"
1.23 +#include "nsTreeImageListener.h"
1.24 +
1.25 +#include "nsGkAtoms.h"
1.26 +#include "nsCSSAnonBoxes.h"
1.27 +
1.28 +#include "nsIContent.h"
1.29 +#include "nsStyleContext.h"
1.30 +#include "nsIBoxObject.h"
1.31 +#include "nsIDOMCustomEvent.h"
1.32 +#include "nsIDOMMouseEvent.h"
1.33 +#include "nsIDOMElement.h"
1.34 +#include "nsIDOMNodeList.h"
1.35 +#include "nsIDOMDocument.h"
1.36 +#include "nsIDOMXULElement.h"
1.37 +#include "nsIDocument.h"
1.38 +#include "mozilla/css/StyleRule.h"
1.39 +#include "nsCSSRendering.h"
1.40 +#include "nsIXULTemplateBuilder.h"
1.41 +#include "nsXPIDLString.h"
1.42 +#include "nsContainerFrame.h"
1.43 +#include "nsView.h"
1.44 +#include "nsViewManager.h"
1.45 +#include "nsWidgetsCID.h"
1.46 +#include "nsBoxFrame.h"
1.47 +#include "nsBoxObject.h"
1.48 +#include "nsIURL.h"
1.49 +#include "nsNetUtil.h"
1.50 +#include "nsBoxLayoutState.h"
1.51 +#include "nsTreeContentView.h"
1.52 +#include "nsTreeUtils.h"
1.53 +#include "nsITheme.h"
1.54 +#include "imgIRequest.h"
1.55 +#include "imgIContainer.h"
1.56 +#include "imgILoader.h"
1.57 +#include "nsINodeInfo.h"
1.58 +#include "nsContentUtils.h"
1.59 +#include "nsLayoutUtils.h"
1.60 +#include "nsIScrollableFrame.h"
1.61 +#include "nsDisplayList.h"
1.62 +#include "nsTreeBoxObject.h"
1.63 +#include "nsRenderingContext.h"
1.64 +#include "nsIScriptableRegion.h"
1.65 +#include <algorithm>
1.66 +#include "ScrollbarActivity.h"
1.67 +
1.68 +#ifdef ACCESSIBILITY
1.69 +#include "nsAccessibilityService.h"
1.70 +#include "nsIWritablePropertyBag2.h"
1.71 +#endif
1.72 +#include "nsBidiUtils.h"
1.73 +
1.74 +using namespace mozilla;
1.75 +using namespace mozilla::layout;
1.76 +
1.77 +// Enumeration function that cancels all the image requests in our cache
1.78 +static PLDHashOperator
1.79 +CancelImageRequest(const nsAString& aKey,
1.80 + nsTreeImageCacheEntry aEntry, void* aData)
1.81 +{
1.82 +
1.83 + // If our imgIRequest object was registered with the refresh driver,
1.84 + // then we need to deregister it.
1.85 + nsTreeBodyFrame* frame = static_cast<nsTreeBodyFrame*>(aData);
1.86 +
1.87 + nsLayoutUtils::DeregisterImageRequest(frame->PresContext(), aEntry.request,
1.88 + nullptr);
1.89 +
1.90 + aEntry.request->CancelAndForgetObserver(NS_BINDING_ABORTED);
1.91 + return PL_DHASH_NEXT;
1.92 +}
1.93 +
1.94 +//
1.95 +// NS_NewTreeFrame
1.96 +//
1.97 +// Creates a new tree frame
1.98 +//
1.99 +nsIFrame*
1.100 +NS_NewTreeBodyFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
1.101 +{
1.102 + return new (aPresShell) nsTreeBodyFrame(aPresShell, aContext);
1.103 +}
1.104 +
1.105 +NS_IMPL_FRAMEARENA_HELPERS(nsTreeBodyFrame)
1.106 +
1.107 +NS_QUERYFRAME_HEAD(nsTreeBodyFrame)
1.108 + NS_QUERYFRAME_ENTRY(nsIScrollbarMediator)
1.109 + NS_QUERYFRAME_ENTRY(nsIScrollbarOwner)
1.110 + NS_QUERYFRAME_ENTRY(nsTreeBodyFrame)
1.111 +NS_QUERYFRAME_TAIL_INHERITING(nsLeafBoxFrame)
1.112 +
1.113 +// Constructor
1.114 +nsTreeBodyFrame::nsTreeBodyFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
1.115 +:nsLeafBoxFrame(aPresShell, aContext),
1.116 + mSlots(nullptr),
1.117 + mImageCache(16),
1.118 + mTopRowIndex(0),
1.119 + mPageLength(0),
1.120 + mHorzPosition(0),
1.121 + mOriginalHorzWidth(-1),
1.122 + mHorzWidth(0),
1.123 + mAdjustWidth(0),
1.124 + mRowHeight(0),
1.125 + mIndentation(0),
1.126 + mStringWidth(-1),
1.127 + mUpdateBatchNest(0),
1.128 + mRowCount(0),
1.129 + mMouseOverRow(-1),
1.130 + mFocused(false),
1.131 + mHasFixedRowCount(false),
1.132 + mVerticalOverflow(false),
1.133 + mHorizontalOverflow(false),
1.134 + mReflowCallbackPosted(false),
1.135 + mCheckingOverflow(false)
1.136 +{
1.137 + mColumns = new nsTreeColumns(this);
1.138 +}
1.139 +
1.140 +// Destructor
1.141 +nsTreeBodyFrame::~nsTreeBodyFrame()
1.142 +{
1.143 + mImageCache.EnumerateRead(CancelImageRequest, this);
1.144 + DetachImageListeners();
1.145 + delete mSlots;
1.146 +}
1.147 +
1.148 +static void
1.149 +GetBorderPadding(nsStyleContext* aContext, nsMargin& aMargin)
1.150 +{
1.151 + aMargin.SizeTo(0, 0, 0, 0);
1.152 + if (!aContext->StylePadding()->GetPadding(aMargin)) {
1.153 + NS_NOTYETIMPLEMENTED("percentage padding");
1.154 + }
1.155 + aMargin += aContext->StyleBorder()->GetComputedBorder();
1.156 +}
1.157 +
1.158 +static void
1.159 +AdjustForBorderPadding(nsStyleContext* aContext, nsRect& aRect)
1.160 +{
1.161 + nsMargin borderPadding(0, 0, 0, 0);
1.162 + GetBorderPadding(aContext, borderPadding);
1.163 + aRect.Deflate(borderPadding);
1.164 +}
1.165 +
1.166 +void
1.167 +nsTreeBodyFrame::Init(nsIContent* aContent,
1.168 + nsIFrame* aParent,
1.169 + nsIFrame* aPrevInFlow)
1.170 +{
1.171 + nsLeafBoxFrame::Init(aContent, aParent, aPrevInFlow);
1.172 +
1.173 + mIndentation = GetIndentation();
1.174 + mRowHeight = GetRowHeight();
1.175 +
1.176 + EnsureBoxObject();
1.177 +
1.178 + if (LookAndFeel::GetInt(LookAndFeel::eIntID_UseOverlayScrollbars) != 0) {
1.179 + mScrollbarActivity = new ScrollbarActivity(
1.180 + static_cast<nsIScrollbarOwner*>(this));
1.181 + }
1.182 +}
1.183 +
1.184 +nsSize
1.185 +nsTreeBodyFrame::GetMinSize(nsBoxLayoutState& aBoxLayoutState)
1.186 +{
1.187 + EnsureView();
1.188 +
1.189 + nsIContent* baseElement = GetBaseElement();
1.190 +
1.191 + nsSize min(0,0);
1.192 + int32_t desiredRows;
1.193 + if (MOZ_UNLIKELY(!baseElement)) {
1.194 + desiredRows = 0;
1.195 + }
1.196 + else if (baseElement->Tag() == nsGkAtoms::select &&
1.197 + baseElement->IsHTML()) {
1.198 + min.width = CalcMaxRowWidth();
1.199 + nsAutoString size;
1.200 + baseElement->GetAttr(kNameSpaceID_None, nsGkAtoms::size, size);
1.201 + if (!size.IsEmpty()) {
1.202 + nsresult err;
1.203 + desiredRows = size.ToInteger(&err);
1.204 + mHasFixedRowCount = true;
1.205 + mPageLength = desiredRows;
1.206 + }
1.207 + else {
1.208 + desiredRows = 1;
1.209 + }
1.210 + }
1.211 + else {
1.212 + // tree
1.213 + nsAutoString rows;
1.214 + baseElement->GetAttr(kNameSpaceID_None, nsGkAtoms::rows, rows);
1.215 + if (!rows.IsEmpty()) {
1.216 + nsresult err;
1.217 + desiredRows = rows.ToInteger(&err);
1.218 + mPageLength = desiredRows;
1.219 + }
1.220 + else {
1.221 + desiredRows = 0;
1.222 + }
1.223 + }
1.224 +
1.225 + min.height = mRowHeight * desiredRows;
1.226 +
1.227 + AddBorderAndPadding(min);
1.228 + bool widthSet, heightSet;
1.229 + nsIFrame::AddCSSMinSize(aBoxLayoutState, this, min, widthSet, heightSet);
1.230 +
1.231 + return min;
1.232 +}
1.233 +
1.234 +nscoord
1.235 +nsTreeBodyFrame::CalcMaxRowWidth()
1.236 +{
1.237 + if (mStringWidth != -1)
1.238 + return mStringWidth;
1.239 +
1.240 + if (!mView)
1.241 + return 0;
1.242 +
1.243 + nsStyleContext* rowContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreerow);
1.244 + nsMargin rowMargin(0,0,0,0);
1.245 + GetBorderPadding(rowContext, rowMargin);
1.246 +
1.247 + nscoord rowWidth;
1.248 + nsTreeColumn* col;
1.249 +
1.250 + nsRefPtr<nsRenderingContext> rc =
1.251 + PresContext()->PresShell()->CreateReferenceRenderingContext();
1.252 +
1.253 + for (int32_t row = 0; row < mRowCount; ++row) {
1.254 + rowWidth = 0;
1.255 +
1.256 + for (col = mColumns->GetFirstColumn(); col; col = col->GetNext()) {
1.257 + nscoord desiredWidth, currentWidth;
1.258 + nsresult rv = GetCellWidth(row, col, rc, desiredWidth, currentWidth);
1.259 + if (NS_FAILED(rv)) {
1.260 + NS_NOTREACHED("invalid column");
1.261 + continue;
1.262 + }
1.263 + rowWidth += desiredWidth;
1.264 + }
1.265 +
1.266 + if (rowWidth > mStringWidth)
1.267 + mStringWidth = rowWidth;
1.268 + }
1.269 +
1.270 + mStringWidth += rowMargin.left + rowMargin.right;
1.271 + return mStringWidth;
1.272 +}
1.273 +
1.274 +void
1.275 +nsTreeBodyFrame::DestroyFrom(nsIFrame* aDestructRoot)
1.276 +{
1.277 + if (mScrollbarActivity) {
1.278 + mScrollbarActivity->Destroy();
1.279 + mScrollbarActivity = nullptr;
1.280 + }
1.281 +
1.282 + mScrollEvent.Revoke();
1.283 + // Make sure we cancel any posted callbacks.
1.284 + if (mReflowCallbackPosted) {
1.285 + PresContext()->PresShell()->CancelReflowCallback(this);
1.286 + mReflowCallbackPosted = false;
1.287 + }
1.288 +
1.289 + if (mColumns)
1.290 + mColumns->SetTree(nullptr);
1.291 +
1.292 + // Save off our info into the box object.
1.293 + nsCOMPtr<nsPIBoxObject> box(do_QueryInterface(mTreeBoxObject));
1.294 + if (box) {
1.295 + if (mTopRowIndex > 0) {
1.296 + nsAutoString topRowStr; topRowStr.AssignLiteral("topRow");
1.297 + nsAutoString topRow;
1.298 + topRow.AppendInt(mTopRowIndex);
1.299 + box->SetProperty(topRowStr.get(), topRow.get());
1.300 + }
1.301 +
1.302 + // Always null out the cached tree body frame.
1.303 + box->ClearCachedValues();
1.304 +
1.305 + mTreeBoxObject = nullptr; // Drop our ref here.
1.306 + }
1.307 +
1.308 + if (mView) {
1.309 + nsCOMPtr<nsITreeSelection> sel;
1.310 + mView->GetSelection(getter_AddRefs(sel));
1.311 + if (sel)
1.312 + sel->SetTree(nullptr);
1.313 + mView->SetTree(nullptr);
1.314 + mView = nullptr;
1.315 + }
1.316 +
1.317 + nsLeafBoxFrame::DestroyFrom(aDestructRoot);
1.318 +}
1.319 +
1.320 +void
1.321 +nsTreeBodyFrame::EnsureBoxObject()
1.322 +{
1.323 + if (!mTreeBoxObject) {
1.324 + nsIContent* parent = GetBaseElement();
1.325 + if (parent) {
1.326 + nsIDocument* nsDoc = parent->GetDocument();
1.327 + if (!nsDoc) // there may be no document, if we're called from Destroy()
1.328 + return;
1.329 + ErrorResult ignored;
1.330 + nsCOMPtr<nsIBoxObject> box =
1.331 + nsDoc->GetBoxObjectFor(parent->AsElement(), ignored);
1.332 + // Ensure that we got a native box object.
1.333 + nsCOMPtr<nsPIBoxObject> pBox = do_QueryInterface(box);
1.334 + if (pBox) {
1.335 + nsCOMPtr<nsITreeBoxObject> realTreeBoxObject = do_QueryInterface(pBox);
1.336 + if (realTreeBoxObject) {
1.337 + nsTreeBodyFrame* innerTreeBoxObject =
1.338 + static_cast<nsTreeBoxObject*>(realTreeBoxObject.get())
1.339 + ->GetCachedTreeBody();
1.340 + ENSURE_TRUE(!innerTreeBoxObject || innerTreeBoxObject == this);
1.341 + mTreeBoxObject = realTreeBoxObject;
1.342 + }
1.343 + }
1.344 + }
1.345 + }
1.346 +}
1.347 +
1.348 +void
1.349 +nsTreeBodyFrame::EnsureView()
1.350 +{
1.351 + if (!mView) {
1.352 + if (PresContext()->PresShell()->IsReflowLocked()) {
1.353 + if (!mReflowCallbackPosted) {
1.354 + mReflowCallbackPosted = true;
1.355 + PresContext()->PresShell()->PostReflowCallback(this);
1.356 + }
1.357 + return;
1.358 + }
1.359 + nsCOMPtr<nsIBoxObject> box = do_QueryInterface(mTreeBoxObject);
1.360 + if (box) {
1.361 + nsWeakFrame weakFrame(this);
1.362 + nsCOMPtr<nsITreeView> treeView;
1.363 + mTreeBoxObject->GetView(getter_AddRefs(treeView));
1.364 + if (treeView && weakFrame.IsAlive()) {
1.365 + nsXPIDLString rowStr;
1.366 + box->GetProperty(MOZ_UTF16("topRow"),
1.367 + getter_Copies(rowStr));
1.368 + nsAutoString rowStr2(rowStr);
1.369 + nsresult error;
1.370 + int32_t rowIndex = rowStr2.ToInteger(&error);
1.371 +
1.372 + // Set our view.
1.373 + SetView(treeView);
1.374 + ENSURE_TRUE(weakFrame.IsAlive());
1.375 +
1.376 + // Scroll to the given row.
1.377 + // XXX is this optimal if we haven't laid out yet?
1.378 + ScrollToRow(rowIndex);
1.379 + ENSURE_TRUE(weakFrame.IsAlive());
1.380 +
1.381 + // Clear out the property info for the top row, but we always keep the
1.382 + // view current.
1.383 + box->RemoveProperty(MOZ_UTF16("topRow"));
1.384 + }
1.385 + }
1.386 + }
1.387 +}
1.388 +
1.389 +void
1.390 +nsTreeBodyFrame::ManageReflowCallback(const nsRect& aRect, nscoord aHorzWidth)
1.391 +{
1.392 + if (!mReflowCallbackPosted &&
1.393 + (!aRect.IsEqualEdges(mRect) || mHorzWidth != aHorzWidth)) {
1.394 + PresContext()->PresShell()->PostReflowCallback(this);
1.395 + mReflowCallbackPosted = true;
1.396 + mOriginalHorzWidth = mHorzWidth;
1.397 + }
1.398 + else if (mReflowCallbackPosted &&
1.399 + mHorzWidth != aHorzWidth && mOriginalHorzWidth == aHorzWidth) {
1.400 + PresContext()->PresShell()->CancelReflowCallback(this);
1.401 + mReflowCallbackPosted = false;
1.402 + mOriginalHorzWidth = -1;
1.403 + }
1.404 +}
1.405 +
1.406 +void
1.407 +nsTreeBodyFrame::SetBounds(nsBoxLayoutState& aBoxLayoutState, const nsRect& aRect,
1.408 + bool aRemoveOverflowArea)
1.409 +{
1.410 + nscoord horzWidth = CalcHorzWidth(GetScrollParts());
1.411 + ManageReflowCallback(aRect, horzWidth);
1.412 + mHorzWidth = horzWidth;
1.413 +
1.414 + nsLeafBoxFrame::SetBounds(aBoxLayoutState, aRect, aRemoveOverflowArea);
1.415 +}
1.416 +
1.417 +
1.418 +bool
1.419 +nsTreeBodyFrame::ReflowFinished()
1.420 +{
1.421 + if (!mView) {
1.422 + nsWeakFrame weakFrame(this);
1.423 + EnsureView();
1.424 + NS_ENSURE_TRUE(weakFrame.IsAlive(), false);
1.425 + }
1.426 + if (mView) {
1.427 + CalcInnerBox();
1.428 + ScrollParts parts = GetScrollParts();
1.429 + mHorzWidth = CalcHorzWidth(parts);
1.430 + if (!mHasFixedRowCount) {
1.431 + mPageLength = mInnerBox.height / mRowHeight;
1.432 + }
1.433 +
1.434 + int32_t lastPageTopRow = std::max(0, mRowCount - mPageLength);
1.435 + if (mTopRowIndex > lastPageTopRow)
1.436 + ScrollToRowInternal(parts, lastPageTopRow);
1.437 +
1.438 + nsIContent *treeContent = GetBaseElement();
1.439 + if (treeContent &&
1.440 + treeContent->AttrValueIs(kNameSpaceID_None,
1.441 + nsGkAtoms::keepcurrentinview,
1.442 + nsGkAtoms::_true, eCaseMatters)) {
1.443 + // make sure that the current selected item is still
1.444 + // visible after the tree changes size.
1.445 + nsCOMPtr<nsITreeSelection> sel;
1.446 + mView->GetSelection(getter_AddRefs(sel));
1.447 + if (sel) {
1.448 + int32_t currentIndex;
1.449 + sel->GetCurrentIndex(¤tIndex);
1.450 + if (currentIndex != -1)
1.451 + EnsureRowIsVisibleInternal(parts, currentIndex);
1.452 + }
1.453 + }
1.454 +
1.455 + if (!FullScrollbarsUpdate(false)) {
1.456 + return false;
1.457 + }
1.458 + }
1.459 +
1.460 + mReflowCallbackPosted = false;
1.461 + return false;
1.462 +}
1.463 +
1.464 +void
1.465 +nsTreeBodyFrame::ReflowCallbackCanceled()
1.466 +{
1.467 + mReflowCallbackPosted = false;
1.468 +}
1.469 +
1.470 +nsresult
1.471 +nsTreeBodyFrame::GetView(nsITreeView * *aView)
1.472 +{
1.473 + *aView = nullptr;
1.474 + nsWeakFrame weakFrame(this);
1.475 + EnsureView();
1.476 + NS_ENSURE_STATE(weakFrame.IsAlive());
1.477 + NS_IF_ADDREF(*aView = mView);
1.478 + return NS_OK;
1.479 +}
1.480 +
1.481 +nsresult
1.482 +nsTreeBodyFrame::SetView(nsITreeView * aView)
1.483 +{
1.484 + // First clear out the old view.
1.485 + if (mView) {
1.486 + nsCOMPtr<nsITreeSelection> sel;
1.487 + mView->GetSelection(getter_AddRefs(sel));
1.488 + if (sel)
1.489 + sel->SetTree(nullptr);
1.490 + mView->SetTree(nullptr);
1.491 +
1.492 + // Only reset the top row index and delete the columns if we had an old non-null view.
1.493 + mTopRowIndex = 0;
1.494 + }
1.495 +
1.496 + // Tree, meet the view.
1.497 + mView = aView;
1.498 +
1.499 + // Changing the view causes us to refetch our data. This will
1.500 + // necessarily entail a full invalidation of the tree.
1.501 + Invalidate();
1.502 +
1.503 + nsIContent *treeContent = GetBaseElement();
1.504 + if (treeContent) {
1.505 +#ifdef ACCESSIBILITY
1.506 + nsAccessibilityService* accService = nsIPresShell::AccService();
1.507 + if (accService)
1.508 + accService->TreeViewChanged(PresContext()->GetPresShell(), treeContent, mView);
1.509 +#endif
1.510 + FireDOMEvent(NS_LITERAL_STRING("TreeViewChanged"), treeContent);
1.511 + }
1.512 +
1.513 + if (mView) {
1.514 + // Give the view a new empty selection object to play with, but only if it
1.515 + // doesn't have one already.
1.516 + nsCOMPtr<nsITreeSelection> sel;
1.517 + mView->GetSelection(getter_AddRefs(sel));
1.518 + if (sel) {
1.519 + sel->SetTree(mTreeBoxObject);
1.520 + }
1.521 + else {
1.522 + NS_NewTreeSelection(mTreeBoxObject, getter_AddRefs(sel));
1.523 + mView->SetSelection(sel);
1.524 + }
1.525 +
1.526 + // View, meet the tree.
1.527 + nsWeakFrame weakFrame(this);
1.528 + mView->SetTree(mTreeBoxObject);
1.529 + NS_ENSURE_STATE(weakFrame.IsAlive());
1.530 + mView->GetRowCount(&mRowCount);
1.531 +
1.532 + if (!PresContext()->PresShell()->IsReflowLocked()) {
1.533 + // The scrollbar will need to be updated.
1.534 + FullScrollbarsUpdate(false);
1.535 + } else if (!mReflowCallbackPosted) {
1.536 + mReflowCallbackPosted = true;
1.537 + PresContext()->PresShell()->PostReflowCallback(this);
1.538 + }
1.539 + }
1.540 +
1.541 + return NS_OK;
1.542 +}
1.543 +
1.544 +nsresult
1.545 +nsTreeBodyFrame::GetFocused(bool* aFocused)
1.546 +{
1.547 + *aFocused = mFocused;
1.548 + return NS_OK;
1.549 +}
1.550 +
1.551 +nsresult
1.552 +nsTreeBodyFrame::SetFocused(bool aFocused)
1.553 +{
1.554 + if (mFocused != aFocused) {
1.555 + mFocused = aFocused;
1.556 + if (mView) {
1.557 + nsCOMPtr<nsITreeSelection> sel;
1.558 + mView->GetSelection(getter_AddRefs(sel));
1.559 + if (sel)
1.560 + sel->InvalidateSelection();
1.561 + }
1.562 + }
1.563 + return NS_OK;
1.564 +}
1.565 +
1.566 +nsresult
1.567 +nsTreeBodyFrame::GetTreeBody(nsIDOMElement** aElement)
1.568 +{
1.569 + //NS_ASSERTION(mContent, "no content, see bug #104878");
1.570 + if (!mContent)
1.571 + return NS_ERROR_NULL_POINTER;
1.572 +
1.573 + return mContent->QueryInterface(NS_GET_IID(nsIDOMElement), (void**)aElement);
1.574 +}
1.575 +
1.576 +nsresult
1.577 +nsTreeBodyFrame::GetRowHeight(int32_t* _retval)
1.578 +{
1.579 + *_retval = nsPresContext::AppUnitsToIntCSSPixels(mRowHeight);
1.580 + return NS_OK;
1.581 +}
1.582 +
1.583 +nsresult
1.584 +nsTreeBodyFrame::GetRowWidth(int32_t *aRowWidth)
1.585 +{
1.586 + *aRowWidth = nsPresContext::AppUnitsToIntCSSPixels(CalcHorzWidth(GetScrollParts()));
1.587 + return NS_OK;
1.588 +}
1.589 +
1.590 +nsresult
1.591 +nsTreeBodyFrame::GetHorizontalPosition(int32_t *aHorizontalPosition)
1.592 +{
1.593 + *aHorizontalPosition = nsPresContext::AppUnitsToIntCSSPixels(mHorzPosition);
1.594 + return NS_OK;
1.595 +}
1.596 +
1.597 +nsresult
1.598 +nsTreeBodyFrame::GetSelectionRegion(nsIScriptableRegion **aRegion)
1.599 +{
1.600 + *aRegion = nullptr;
1.601 +
1.602 + nsCOMPtr<nsITreeSelection> selection;
1.603 + mView->GetSelection(getter_AddRefs(selection));
1.604 + NS_ENSURE_TRUE(selection, NS_OK);
1.605 +
1.606 + nsCOMPtr<nsIScriptableRegion> region = do_CreateInstance("@mozilla.org/gfx/region;1");
1.607 + NS_ENSURE_TRUE(region, NS_ERROR_FAILURE);
1.608 + region->Init();
1.609 +
1.610 + nsRefPtr<nsPresContext> presContext = PresContext();
1.611 + nsIntRect rect = mRect.ToOutsidePixels(presContext->AppUnitsPerCSSPixel());
1.612 +
1.613 + nsIFrame* rootFrame = presContext->PresShell()->GetRootFrame();
1.614 + nsPoint origin = GetOffsetTo(rootFrame);
1.615 +
1.616 + // iterate through the visible rows and add the selected ones to the
1.617 + // drag region
1.618 + int32_t x = nsPresContext::AppUnitsToIntCSSPixels(origin.x);
1.619 + int32_t y = nsPresContext::AppUnitsToIntCSSPixels(origin.y);
1.620 + int32_t top = y;
1.621 + int32_t end = LastVisibleRow();
1.622 + int32_t rowHeight = nsPresContext::AppUnitsToIntCSSPixels(mRowHeight);
1.623 + for (int32_t i = mTopRowIndex; i <= end; i++) {
1.624 + bool isSelected;
1.625 + selection->IsSelected(i, &isSelected);
1.626 + if (isSelected)
1.627 + region->UnionRect(x, y, rect.width, rowHeight);
1.628 + y += rowHeight;
1.629 + }
1.630 +
1.631 + // clip to the tree boundary in case one row extends past it
1.632 + region->IntersectRect(x, top, rect.width, rect.height);
1.633 +
1.634 + NS_ADDREF(*aRegion = region);
1.635 + return NS_OK;
1.636 +}
1.637 +
1.638 +nsresult
1.639 +nsTreeBodyFrame::Invalidate()
1.640 +{
1.641 + if (mUpdateBatchNest)
1.642 + return NS_OK;
1.643 +
1.644 + InvalidateFrame();
1.645 +
1.646 + return NS_OK;
1.647 +}
1.648 +
1.649 +nsresult
1.650 +nsTreeBodyFrame::InvalidateColumn(nsITreeColumn* aCol)
1.651 +{
1.652 + if (mUpdateBatchNest)
1.653 + return NS_OK;
1.654 +
1.655 + nsRefPtr<nsTreeColumn> col = GetColumnImpl(aCol);
1.656 + if (!col)
1.657 + return NS_ERROR_INVALID_ARG;
1.658 +
1.659 +#ifdef ACCESSIBILITY
1.660 + if (nsIPresShell::IsAccessibilityActive())
1.661 + FireInvalidateEvent(-1, -1, aCol, aCol);
1.662 +#endif
1.663 +
1.664 + nsRect columnRect;
1.665 + nsresult rv = col->GetRect(this, mInnerBox.y, mInnerBox.height, &columnRect);
1.666 + NS_ENSURE_SUCCESS(rv, rv);
1.667 +
1.668 + // When false then column is out of view
1.669 + if (OffsetForHorzScroll(columnRect, true))
1.670 + InvalidateFrameWithRect(columnRect);
1.671 +
1.672 + return NS_OK;
1.673 +}
1.674 +
1.675 +nsresult
1.676 +nsTreeBodyFrame::InvalidateRow(int32_t aIndex)
1.677 +{
1.678 + if (mUpdateBatchNest)
1.679 + return NS_OK;
1.680 +
1.681 +#ifdef ACCESSIBILITY
1.682 + if (nsIPresShell::IsAccessibilityActive())
1.683 + FireInvalidateEvent(aIndex, aIndex, nullptr, nullptr);
1.684 +#endif
1.685 +
1.686 + aIndex -= mTopRowIndex;
1.687 + if (aIndex < 0 || aIndex > mPageLength)
1.688 + return NS_OK;
1.689 +
1.690 + nsRect rowRect(mInnerBox.x, mInnerBox.y+mRowHeight*aIndex, mInnerBox.width, mRowHeight);
1.691 + InvalidateFrameWithRect(rowRect);
1.692 +
1.693 + return NS_OK;
1.694 +}
1.695 +
1.696 +nsresult
1.697 +nsTreeBodyFrame::InvalidateCell(int32_t aIndex, nsITreeColumn* aCol)
1.698 +{
1.699 + if (mUpdateBatchNest)
1.700 + return NS_OK;
1.701 +
1.702 +#ifdef ACCESSIBILITY
1.703 + if (nsIPresShell::IsAccessibilityActive())
1.704 + FireInvalidateEvent(aIndex, aIndex, aCol, aCol);
1.705 +#endif
1.706 +
1.707 + aIndex -= mTopRowIndex;
1.708 + if (aIndex < 0 || aIndex > mPageLength)
1.709 + return NS_OK;
1.710 +
1.711 + nsRefPtr<nsTreeColumn> col = GetColumnImpl(aCol);
1.712 + if (!col)
1.713 + return NS_ERROR_INVALID_ARG;
1.714 +
1.715 + nsRect cellRect;
1.716 + nsresult rv = col->GetRect(this, mInnerBox.y+mRowHeight*aIndex, mRowHeight,
1.717 + &cellRect);
1.718 + NS_ENSURE_SUCCESS(rv, rv);
1.719 +
1.720 + if (OffsetForHorzScroll(cellRect, true))
1.721 + InvalidateFrameWithRect(cellRect);
1.722 +
1.723 + return NS_OK;
1.724 +}
1.725 +
1.726 +nsresult
1.727 +nsTreeBodyFrame::InvalidateRange(int32_t aStart, int32_t aEnd)
1.728 +{
1.729 + if (mUpdateBatchNest)
1.730 + return NS_OK;
1.731 +
1.732 + if (aStart == aEnd)
1.733 + return InvalidateRow(aStart);
1.734 +
1.735 + int32_t last = LastVisibleRow();
1.736 + if (aStart > aEnd || aEnd < mTopRowIndex || aStart > last)
1.737 + return NS_OK;
1.738 +
1.739 + if (aStart < mTopRowIndex)
1.740 + aStart = mTopRowIndex;
1.741 +
1.742 + if (aEnd > last)
1.743 + aEnd = last;
1.744 +
1.745 +#ifdef ACCESSIBILITY
1.746 + if (nsIPresShell::IsAccessibilityActive()) {
1.747 + int32_t end =
1.748 + mRowCount > 0 ? ((mRowCount <= aEnd) ? mRowCount - 1 : aEnd) : 0;
1.749 + FireInvalidateEvent(aStart, end, nullptr, nullptr);
1.750 + }
1.751 +#endif
1.752 +
1.753 + nsRect rangeRect(mInnerBox.x, mInnerBox.y+mRowHeight*(aStart-mTopRowIndex), mInnerBox.width, mRowHeight*(aEnd-aStart+1));
1.754 + InvalidateFrameWithRect(rangeRect);
1.755 +
1.756 + return NS_OK;
1.757 +}
1.758 +
1.759 +nsresult
1.760 +nsTreeBodyFrame::InvalidateColumnRange(int32_t aStart, int32_t aEnd, nsITreeColumn* aCol)
1.761 +{
1.762 + if (mUpdateBatchNest)
1.763 + return NS_OK;
1.764 +
1.765 + nsRefPtr<nsTreeColumn> col = GetColumnImpl(aCol);
1.766 + if (!col)
1.767 + return NS_ERROR_INVALID_ARG;
1.768 +
1.769 + if (aStart == aEnd)
1.770 + return InvalidateCell(aStart, col);
1.771 +
1.772 + int32_t last = LastVisibleRow();
1.773 + if (aStart > aEnd || aEnd < mTopRowIndex || aStart > last)
1.774 + return NS_OK;
1.775 +
1.776 + if (aStart < mTopRowIndex)
1.777 + aStart = mTopRowIndex;
1.778 +
1.779 + if (aEnd > last)
1.780 + aEnd = last;
1.781 +
1.782 +#ifdef ACCESSIBILITY
1.783 + if (nsIPresShell::IsAccessibilityActive()) {
1.784 + int32_t end =
1.785 + mRowCount > 0 ? ((mRowCount <= aEnd) ? mRowCount - 1 : aEnd) : 0;
1.786 + FireInvalidateEvent(aStart, end, aCol, aCol);
1.787 + }
1.788 +#endif
1.789 +
1.790 + nsRect rangeRect;
1.791 + nsresult rv = col->GetRect(this,
1.792 + mInnerBox.y+mRowHeight*(aStart-mTopRowIndex),
1.793 + mRowHeight*(aEnd-aStart+1),
1.794 + &rangeRect);
1.795 + NS_ENSURE_SUCCESS(rv, rv);
1.796 +
1.797 + InvalidateFrameWithRect(rangeRect);
1.798 +
1.799 + return NS_OK;
1.800 +}
1.801 +
1.802 +static void
1.803 +FindScrollParts(nsIFrame* aCurrFrame, nsTreeBodyFrame::ScrollParts* aResult)
1.804 +{
1.805 + if (!aResult->mColumnsScrollFrame) {
1.806 + nsIScrollableFrame* f = do_QueryFrame(aCurrFrame);
1.807 + if (f) {
1.808 + aResult->mColumnsFrame = aCurrFrame;
1.809 + aResult->mColumnsScrollFrame = f;
1.810 + }
1.811 + }
1.812 +
1.813 + nsScrollbarFrame *sf = do_QueryFrame(aCurrFrame);
1.814 + if (sf) {
1.815 + if (!aCurrFrame->IsHorizontal()) {
1.816 + if (!aResult->mVScrollbar) {
1.817 + aResult->mVScrollbar = sf;
1.818 + }
1.819 + } else {
1.820 + if (!aResult->mHScrollbar) {
1.821 + aResult->mHScrollbar = sf;
1.822 + }
1.823 + }
1.824 + // don't bother searching inside a scrollbar
1.825 + return;
1.826 + }
1.827 +
1.828 + nsIFrame* child = aCurrFrame->GetFirstPrincipalChild();
1.829 + while (child &&
1.830 + !child->GetContent()->IsRootOfNativeAnonymousSubtree() &&
1.831 + (!aResult->mVScrollbar || !aResult->mHScrollbar ||
1.832 + !aResult->mColumnsScrollFrame)) {
1.833 + FindScrollParts(child, aResult);
1.834 + child = child->GetNextSibling();
1.835 + }
1.836 +}
1.837 +
1.838 +nsTreeBodyFrame::ScrollParts nsTreeBodyFrame::GetScrollParts()
1.839 +{
1.840 + ScrollParts result = { nullptr, nullptr, nullptr, nullptr, nullptr, nullptr };
1.841 + nsIContent* baseElement = GetBaseElement();
1.842 + nsIFrame* treeFrame =
1.843 + baseElement ? baseElement->GetPrimaryFrame() : nullptr;
1.844 + if (treeFrame) {
1.845 + // The way we do this, searching through the entire frame subtree, is pretty
1.846 + // dumb! We should know where these frames are.
1.847 + FindScrollParts(treeFrame, &result);
1.848 + if (result.mHScrollbar) {
1.849 + result.mHScrollbar->SetScrollbarMediatorContent(GetContent());
1.850 + nsIFrame* f = do_QueryFrame(result.mHScrollbar);
1.851 + result.mHScrollbarContent = f->GetContent();
1.852 + }
1.853 + if (result.mVScrollbar) {
1.854 + result.mVScrollbar->SetScrollbarMediatorContent(GetContent());
1.855 + nsIFrame* f = do_QueryFrame(result.mVScrollbar);
1.856 + result.mVScrollbarContent = f->GetContent();
1.857 + }
1.858 + }
1.859 + return result;
1.860 +}
1.861 +
1.862 +void
1.863 +nsTreeBodyFrame::UpdateScrollbars(const ScrollParts& aParts)
1.864 +{
1.865 + nscoord rowHeightAsPixels = nsPresContext::AppUnitsToIntCSSPixels(mRowHeight);
1.866 +
1.867 + nsWeakFrame weakFrame(this);
1.868 +
1.869 + if (aParts.mVScrollbar) {
1.870 + nsAutoString curPos;
1.871 + curPos.AppendInt(mTopRowIndex*rowHeightAsPixels);
1.872 + aParts.mVScrollbarContent->
1.873 + SetAttr(kNameSpaceID_None, nsGkAtoms::curpos, curPos, true);
1.874 + // 'this' might be deleted here
1.875 + }
1.876 +
1.877 + if (weakFrame.IsAlive() && aParts.mHScrollbar) {
1.878 + nsAutoString curPos;
1.879 + curPos.AppendInt(mHorzPosition);
1.880 + aParts.mHScrollbarContent->
1.881 + SetAttr(kNameSpaceID_None, nsGkAtoms::curpos, curPos, true);
1.882 + // 'this' might be deleted here
1.883 + }
1.884 +
1.885 + if (weakFrame.IsAlive() && mScrollbarActivity) {
1.886 + mScrollbarActivity->ActivityOccurred();
1.887 + }
1.888 +}
1.889 +
1.890 +void
1.891 +nsTreeBodyFrame::CheckOverflow(const ScrollParts& aParts)
1.892 +{
1.893 + bool verticalOverflowChanged = false;
1.894 + bool horizontalOverflowChanged = false;
1.895 +
1.896 + if (!mVerticalOverflow && mRowCount > mPageLength) {
1.897 + mVerticalOverflow = true;
1.898 + verticalOverflowChanged = true;
1.899 + }
1.900 + else if (mVerticalOverflow && mRowCount <= mPageLength) {
1.901 + mVerticalOverflow = false;
1.902 + verticalOverflowChanged = true;
1.903 + }
1.904 +
1.905 + if (aParts.mColumnsFrame) {
1.906 + nsRect bounds = aParts.mColumnsFrame->GetRect();
1.907 + if (bounds.width != 0) {
1.908 + /* Ignore overflows that are less than half a pixel. Yes these happen
1.909 + all over the place when flex boxes are compressed real small.
1.910 + Probably a result of a rounding errors somewhere in the layout code. */
1.911 + bounds.width += nsPresContext::CSSPixelsToAppUnits(0.5f);
1.912 + if (!mHorizontalOverflow && bounds.width < mHorzWidth) {
1.913 + mHorizontalOverflow = true;
1.914 + horizontalOverflowChanged = true;
1.915 + } else if (mHorizontalOverflow && bounds.width >= mHorzWidth) {
1.916 + mHorizontalOverflow = false;
1.917 + horizontalOverflowChanged = true;
1.918 + }
1.919 + }
1.920 + }
1.921 +
1.922 + nsWeakFrame weakFrame(this);
1.923 +
1.924 + nsRefPtr<nsPresContext> presContext = PresContext();
1.925 + nsCOMPtr<nsIPresShell> presShell = presContext->GetPresShell();
1.926 + nsCOMPtr<nsIContent> content = mContent;
1.927 +
1.928 + if (verticalOverflowChanged) {
1.929 + InternalScrollPortEvent event(true,
1.930 + mVerticalOverflow ? NS_SCROLLPORT_OVERFLOW : NS_SCROLLPORT_UNDERFLOW,
1.931 + nullptr);
1.932 + event.orient = InternalScrollPortEvent::vertical;
1.933 + EventDispatcher::Dispatch(content, presContext, &event);
1.934 + }
1.935 +
1.936 + if (horizontalOverflowChanged) {
1.937 + InternalScrollPortEvent event(true,
1.938 + mHorizontalOverflow ? NS_SCROLLPORT_OVERFLOW : NS_SCROLLPORT_UNDERFLOW,
1.939 + nullptr);
1.940 + event.orient = InternalScrollPortEvent::horizontal;
1.941 + EventDispatcher::Dispatch(content, presContext, &event);
1.942 + }
1.943 +
1.944 + // The synchronous event dispatch above can trigger reflow notifications.
1.945 + // Flush those explicitly now, so that we can guard against potential infinite
1.946 + // recursion. See bug 905909.
1.947 + if (!weakFrame.IsAlive()) {
1.948 + return;
1.949 + }
1.950 + NS_ASSERTION(!mCheckingOverflow, "mCheckingOverflow should not already be set");
1.951 + // Don't use AutoRestore since we want to not touch mCheckingOverflow if we fail
1.952 + // the weakFrame.IsAlive() check below
1.953 + mCheckingOverflow = true;
1.954 + presShell->FlushPendingNotifications(Flush_Layout);
1.955 + if (!weakFrame.IsAlive()) {
1.956 + return;
1.957 + }
1.958 + mCheckingOverflow = false;
1.959 +}
1.960 +
1.961 +void
1.962 +nsTreeBodyFrame::InvalidateScrollbars(const ScrollParts& aParts, nsWeakFrame& aWeakColumnsFrame)
1.963 +{
1.964 + if (mUpdateBatchNest || !mView)
1.965 + return;
1.966 + nsWeakFrame weakFrame(this);
1.967 +
1.968 + if (aParts.mVScrollbar) {
1.969 + // Do Vertical Scrollbar
1.970 + nsAutoString maxposStr;
1.971 +
1.972 + nscoord rowHeightAsPixels = nsPresContext::AppUnitsToIntCSSPixels(mRowHeight);
1.973 +
1.974 + int32_t size = rowHeightAsPixels * (mRowCount > mPageLength ? mRowCount - mPageLength : 0);
1.975 + maxposStr.AppendInt(size);
1.976 + aParts.mVScrollbarContent->
1.977 + SetAttr(kNameSpaceID_None, nsGkAtoms::maxpos, maxposStr, true);
1.978 + ENSURE_TRUE(weakFrame.IsAlive());
1.979 +
1.980 + // Also set our page increment and decrement.
1.981 + nscoord pageincrement = mPageLength*rowHeightAsPixels;
1.982 + nsAutoString pageStr;
1.983 + pageStr.AppendInt(pageincrement);
1.984 + aParts.mVScrollbarContent->
1.985 + SetAttr(kNameSpaceID_None, nsGkAtoms::pageincrement, pageStr, true);
1.986 + ENSURE_TRUE(weakFrame.IsAlive());
1.987 + }
1.988 +
1.989 + if (aParts.mHScrollbar && aParts.mColumnsFrame && aWeakColumnsFrame.IsAlive()) {
1.990 + // And now Horizontal scrollbar
1.991 + nsRect bounds = aParts.mColumnsFrame->GetRect();
1.992 + nsAutoString maxposStr;
1.993 +
1.994 + maxposStr.AppendInt(mHorzWidth > bounds.width ? mHorzWidth - bounds.width : 0);
1.995 + aParts.mHScrollbarContent->
1.996 + SetAttr(kNameSpaceID_None, nsGkAtoms::maxpos, maxposStr, true);
1.997 + ENSURE_TRUE(weakFrame.IsAlive());
1.998 +
1.999 + nsAutoString pageStr;
1.1000 + pageStr.AppendInt(bounds.width);
1.1001 + aParts.mHScrollbarContent->
1.1002 + SetAttr(kNameSpaceID_None, nsGkAtoms::pageincrement, pageStr, true);
1.1003 + ENSURE_TRUE(weakFrame.IsAlive());
1.1004 +
1.1005 + pageStr.Truncate();
1.1006 + pageStr.AppendInt(nsPresContext::CSSPixelsToAppUnits(16));
1.1007 + aParts.mHScrollbarContent->
1.1008 + SetAttr(kNameSpaceID_None, nsGkAtoms::increment, pageStr, true);
1.1009 + }
1.1010 +
1.1011 + if (weakFrame.IsAlive() && mScrollbarActivity) {
1.1012 + mScrollbarActivity->ActivityOccurred();
1.1013 + }
1.1014 +}
1.1015 +
1.1016 +// Takes client x/y in pixels, converts them to appunits, and converts into
1.1017 +// values relative to this nsTreeBodyFrame frame.
1.1018 +nsPoint
1.1019 +nsTreeBodyFrame::AdjustClientCoordsToBoxCoordSpace(int32_t aX, int32_t aY)
1.1020 +{
1.1021 + nsPoint point(nsPresContext::CSSPixelsToAppUnits(aX),
1.1022 + nsPresContext::CSSPixelsToAppUnits(aY));
1.1023 +
1.1024 + nsPresContext* presContext = PresContext();
1.1025 + point -= GetOffsetTo(presContext->GetPresShell()->GetRootFrame());
1.1026 +
1.1027 + // Adjust by the inner box coords, so that we're in the inner box's
1.1028 + // coordinate space.
1.1029 + point -= mInnerBox.TopLeft();
1.1030 + return point;
1.1031 +} // AdjustClientCoordsToBoxCoordSpace
1.1032 +
1.1033 +nsresult
1.1034 +nsTreeBodyFrame::GetRowAt(int32_t aX, int32_t aY, int32_t* _retval)
1.1035 +{
1.1036 + if (!mView)
1.1037 + return NS_OK;
1.1038 +
1.1039 + nsPoint point = AdjustClientCoordsToBoxCoordSpace(aX, aY);
1.1040 +
1.1041 + // Check if the coordinates are above our visible space.
1.1042 + if (point.y < 0) {
1.1043 + *_retval = -1;
1.1044 + return NS_OK;
1.1045 + }
1.1046 +
1.1047 + *_retval = GetRowAt(point.x, point.y);
1.1048 +
1.1049 + return NS_OK;
1.1050 +}
1.1051 +
1.1052 +nsresult
1.1053 +nsTreeBodyFrame::GetCellAt(int32_t aX, int32_t aY, int32_t* aRow, nsITreeColumn** aCol,
1.1054 + nsACString& aChildElt)
1.1055 +{
1.1056 + if (!mView)
1.1057 + return NS_OK;
1.1058 +
1.1059 + nsPoint point = AdjustClientCoordsToBoxCoordSpace(aX, aY);
1.1060 +
1.1061 + // Check if the coordinates are above our visible space.
1.1062 + if (point.y < 0) {
1.1063 + *aRow = -1;
1.1064 + return NS_OK;
1.1065 + }
1.1066 +
1.1067 + nsTreeColumn* col;
1.1068 + nsIAtom* child;
1.1069 + GetCellAt(point.x, point.y, aRow, &col, &child);
1.1070 +
1.1071 + if (col) {
1.1072 + NS_ADDREF(*aCol = col);
1.1073 + if (child == nsCSSAnonBoxes::moztreecell)
1.1074 + aChildElt.AssignLiteral("cell");
1.1075 + else if (child == nsCSSAnonBoxes::moztreetwisty)
1.1076 + aChildElt.AssignLiteral("twisty");
1.1077 + else if (child == nsCSSAnonBoxes::moztreeimage)
1.1078 + aChildElt.AssignLiteral("image");
1.1079 + else if (child == nsCSSAnonBoxes::moztreecelltext)
1.1080 + aChildElt.AssignLiteral("text");
1.1081 + }
1.1082 +
1.1083 + return NS_OK;
1.1084 +}
1.1085 +
1.1086 +
1.1087 +//
1.1088 +// GetCoordsForCellItem
1.1089 +//
1.1090 +// Find the x/y location and width/height (all in PIXELS) of the given object
1.1091 +// in the given column.
1.1092 +//
1.1093 +// XXX IMPORTANT XXX:
1.1094 +// Hyatt says in the bug for this, that the following needs to be done:
1.1095 +// (1) You need to deal with overflow when computing cell rects. See other column
1.1096 +// iteration examples... if you don't deal with this, you'll mistakenly extend the
1.1097 +// cell into the scrollbar's rect.
1.1098 +//
1.1099 +// (2) You are adjusting the cell rect by the *row" border padding. That's
1.1100 +// wrong. You need to first adjust a row rect by its border/padding, and then the
1.1101 +// cell rect fits inside the adjusted row rect. It also can have border/padding
1.1102 +// as well as margins. The vertical direction isn't that important, but you need
1.1103 +// to get the horizontal direction right.
1.1104 +//
1.1105 +// (3) GetImageSize() does not include margins (but it does include border/padding).
1.1106 +// You need to make sure to add in the image's margins as well.
1.1107 +//
1.1108 +nsresult
1.1109 +nsTreeBodyFrame::GetCoordsForCellItem(int32_t aRow, nsITreeColumn* aCol, const nsACString& aElement,
1.1110 + int32_t *aX, int32_t *aY, int32_t *aWidth, int32_t *aHeight)
1.1111 +{
1.1112 + *aX = 0;
1.1113 + *aY = 0;
1.1114 + *aWidth = 0;
1.1115 + *aHeight = 0;
1.1116 +
1.1117 + bool isRTL = StyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL;
1.1118 + nscoord currX = mInnerBox.x - mHorzPosition;
1.1119 +
1.1120 + // The Rect for the requested item.
1.1121 + nsRect theRect;
1.1122 +
1.1123 + nsPresContext* presContext = PresContext();
1.1124 +
1.1125 + for (nsTreeColumn* currCol = mColumns->GetFirstColumn(); currCol; currCol = currCol->GetNext()) {
1.1126 +
1.1127 + // The Rect for the current cell.
1.1128 + nscoord colWidth;
1.1129 +#ifdef DEBUG
1.1130 + nsresult rv =
1.1131 +#endif
1.1132 + currCol->GetWidthInTwips(this, &colWidth);
1.1133 + NS_ASSERTION(NS_SUCCEEDED(rv), "invalid column");
1.1134 +
1.1135 + nsRect cellRect(currX, mInnerBox.y + mRowHeight * (aRow - mTopRowIndex),
1.1136 + colWidth, mRowHeight);
1.1137 +
1.1138 + // Check the ID of the current column to see if it matches. If it doesn't
1.1139 + // increment the current X value and continue to the next column.
1.1140 + if (currCol != aCol) {
1.1141 + currX += cellRect.width;
1.1142 + continue;
1.1143 + }
1.1144 + // Now obtain the properties for our cell.
1.1145 + PrefillPropertyArray(aRow, currCol);
1.1146 +
1.1147 + nsAutoString properties;
1.1148 + mView->GetCellProperties(aRow, currCol, properties);
1.1149 + nsTreeUtils::TokenizeProperties(properties, mScratchArray);
1.1150 +
1.1151 + nsStyleContext* rowContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreerow);
1.1152 +
1.1153 + // We don't want to consider any of the decorations that may be present
1.1154 + // on the current row, so we have to deflate the rect by the border and
1.1155 + // padding and offset its left and top coordinates appropriately.
1.1156 + AdjustForBorderPadding(rowContext, cellRect);
1.1157 +
1.1158 + nsStyleContext* cellContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreecell);
1.1159 +
1.1160 + NS_NAMED_LITERAL_CSTRING(cell, "cell");
1.1161 + if (currCol->IsCycler() || cell.Equals(aElement)) {
1.1162 + // If the current Column is a Cycler, then the Rect is just the cell - the margins.
1.1163 + // Similarly, if we're just being asked for the cell rect, provide it.
1.1164 +
1.1165 + theRect = cellRect;
1.1166 + nsMargin cellMargin;
1.1167 + cellContext->StyleMargin()->GetMargin(cellMargin);
1.1168 + theRect.Deflate(cellMargin);
1.1169 + break;
1.1170 + }
1.1171 +
1.1172 + // Since we're not looking for the cell, and since the cell isn't a cycler,
1.1173 + // we're looking for some subcomponent, and now we need to subtract the
1.1174 + // borders and padding of the cell from cellRect so this does not
1.1175 + // interfere with our computations.
1.1176 + AdjustForBorderPadding(cellContext, cellRect);
1.1177 +
1.1178 + nsRefPtr<nsRenderingContext> rc =
1.1179 + presContext->PresShell()->CreateReferenceRenderingContext();
1.1180 +
1.1181 + // Now we'll start making our way across the cell, starting at the edge of
1.1182 + // the cell and proceeding until we hit the right edge. |cellX| is the
1.1183 + // working X value that we will increment as we crawl from left to right.
1.1184 + nscoord cellX = cellRect.x;
1.1185 + nscoord remainWidth = cellRect.width;
1.1186 +
1.1187 + if (currCol->IsPrimary()) {
1.1188 + // If the current Column is a Primary, then we need to take into account the indentation
1.1189 + // and possibly a twisty.
1.1190 +
1.1191 + // The amount of indentation is the indentation width (|mIndentation|) by the level.
1.1192 + int32_t level;
1.1193 + mView->GetLevel(aRow, &level);
1.1194 + if (!isRTL)
1.1195 + cellX += mIndentation * level;
1.1196 + remainWidth -= mIndentation * level;
1.1197 +
1.1198 + // Find the twisty rect by computing its size.
1.1199 + nsRect imageRect;
1.1200 + nsRect twistyRect(cellRect);
1.1201 + nsStyleContext* twistyContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreetwisty);
1.1202 + GetTwistyRect(aRow, currCol, imageRect, twistyRect, presContext,
1.1203 + *rc, twistyContext);
1.1204 +
1.1205 + if (NS_LITERAL_CSTRING("twisty").Equals(aElement)) {
1.1206 + // If we're looking for the twisty Rect, just return the size
1.1207 + theRect = twistyRect;
1.1208 + break;
1.1209 + }
1.1210 +
1.1211 + // Now we need to add in the margins of the twisty element, so that we
1.1212 + // can find the offset of the next element in the cell.
1.1213 + nsMargin twistyMargin;
1.1214 + twistyContext->StyleMargin()->GetMargin(twistyMargin);
1.1215 + twistyRect.Inflate(twistyMargin);
1.1216 +
1.1217 + // Adjust our working X value with the twisty width (image size, margins,
1.1218 + // borders, padding.
1.1219 + if (!isRTL)
1.1220 + cellX += twistyRect.width;
1.1221 + }
1.1222 +
1.1223 + // Cell Image
1.1224 + nsStyleContext* imageContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreeimage);
1.1225 +
1.1226 + nsRect imageSize = GetImageSize(aRow, currCol, false, imageContext);
1.1227 + if (NS_LITERAL_CSTRING("image").Equals(aElement)) {
1.1228 + theRect = imageSize;
1.1229 + theRect.x = cellX;
1.1230 + theRect.y = cellRect.y;
1.1231 + break;
1.1232 + }
1.1233 +
1.1234 + // Add in the margins of the cell image.
1.1235 + nsMargin imageMargin;
1.1236 + imageContext->StyleMargin()->GetMargin(imageMargin);
1.1237 + imageSize.Inflate(imageMargin);
1.1238 +
1.1239 + // Increment cellX by the image width
1.1240 + if (!isRTL)
1.1241 + cellX += imageSize.width;
1.1242 +
1.1243 + // Cell Text
1.1244 + nsAutoString cellText;
1.1245 + mView->GetCellText(aRow, currCol, cellText);
1.1246 + // We're going to measure this text so we need to ensure bidi is enabled if
1.1247 + // necessary
1.1248 + CheckTextForBidi(cellText);
1.1249 +
1.1250 + // Create a scratch rect to represent the text rectangle, with the current
1.1251 + // X and Y coords, and a guess at the width and height. The width is the
1.1252 + // remaining width we have left to traverse in the cell, which will be the
1.1253 + // widest possible value for the text rect, and the row height.
1.1254 + nsRect textRect(cellX, cellRect.y, remainWidth, cellRect.height);
1.1255 +
1.1256 + // Measure the width of the text. If the width of the text is greater than
1.1257 + // the remaining width available, then we just assume that the text has
1.1258 + // been cropped and use the remaining rect as the text Rect. Otherwise,
1.1259 + // we add in borders and padding to the text dimension and give that back.
1.1260 + nsStyleContext* textContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreecelltext);
1.1261 +
1.1262 + nsRefPtr<nsFontMetrics> fm;
1.1263 + nsLayoutUtils::GetFontMetricsForStyleContext(textContext,
1.1264 + getter_AddRefs(fm));
1.1265 + nscoord height = fm->MaxHeight();
1.1266 +
1.1267 + nsMargin textMargin;
1.1268 + textContext->StyleMargin()->GetMargin(textMargin);
1.1269 + textRect.Deflate(textMargin);
1.1270 +
1.1271 + // Center the text. XXX Obey vertical-align style prop?
1.1272 + if (height < textRect.height) {
1.1273 + textRect.y += (textRect.height - height) / 2;
1.1274 + textRect.height = height;
1.1275 + }
1.1276 +
1.1277 + nsMargin bp(0,0,0,0);
1.1278 + GetBorderPadding(textContext, bp);
1.1279 + textRect.height += bp.top + bp.bottom;
1.1280 +
1.1281 + rc->SetFont(fm);
1.1282 + AdjustForCellText(cellText, aRow, currCol, *rc, textRect);
1.1283 +
1.1284 + theRect = textRect;
1.1285 + }
1.1286 +
1.1287 + if (isRTL)
1.1288 + theRect.x = mInnerBox.width - theRect.x - theRect.width;
1.1289 +
1.1290 + *aX = nsPresContext::AppUnitsToIntCSSPixels(theRect.x);
1.1291 + *aY = nsPresContext::AppUnitsToIntCSSPixels(theRect.y);
1.1292 + *aWidth = nsPresContext::AppUnitsToIntCSSPixels(theRect.width);
1.1293 + *aHeight = nsPresContext::AppUnitsToIntCSSPixels(theRect.height);
1.1294 +
1.1295 + return NS_OK;
1.1296 +}
1.1297 +
1.1298 +int32_t
1.1299 +nsTreeBodyFrame::GetRowAt(int32_t aX, int32_t aY)
1.1300 +{
1.1301 + // Now just mod by our total inner box height and add to our top row index.
1.1302 + int32_t row = (aY/mRowHeight)+mTopRowIndex;
1.1303 +
1.1304 + // Check if the coordinates are below our visible space (or within our visible
1.1305 + // space but below any row).
1.1306 + if (row > mTopRowIndex + mPageLength || row >= mRowCount)
1.1307 + return -1;
1.1308 +
1.1309 + return row;
1.1310 +}
1.1311 +
1.1312 +void
1.1313 +nsTreeBodyFrame::CheckTextForBidi(nsAutoString& aText)
1.1314 +{
1.1315 + // We could check to see whether the prescontext already has bidi enabled,
1.1316 + // but usually it won't, so it's probably faster to avoid the call to
1.1317 + // GetPresContext() when it's not needed.
1.1318 + if (HasRTLChars(aText)) {
1.1319 + PresContext()->SetBidiEnabled();
1.1320 + }
1.1321 +}
1.1322 +
1.1323 +void
1.1324 +nsTreeBodyFrame::AdjustForCellText(nsAutoString& aText,
1.1325 + int32_t aRowIndex, nsTreeColumn* aColumn,
1.1326 + nsRenderingContext& aRenderingContext,
1.1327 + nsRect& aTextRect)
1.1328 +{
1.1329 + NS_PRECONDITION(aColumn && aColumn->GetFrame(), "invalid column passed");
1.1330 +
1.1331 + nscoord width =
1.1332 + nsLayoutUtils::GetStringWidth(this, &aRenderingContext, aText.get(), aText.Length());
1.1333 + nscoord maxWidth = aTextRect.width;
1.1334 +
1.1335 + if (aColumn->Overflow()) {
1.1336 + DebugOnly<nsresult> rv;
1.1337 + nsTreeColumn* nextColumn = aColumn->GetNext();
1.1338 + while (nextColumn && width > maxWidth) {
1.1339 + while (nextColumn) {
1.1340 + nscoord width;
1.1341 + rv = nextColumn->GetWidthInTwips(this, &width);
1.1342 + NS_ASSERTION(NS_SUCCEEDED(rv), "nextColumn is invalid");
1.1343 +
1.1344 + if (width != 0)
1.1345 + break;
1.1346 +
1.1347 + nextColumn = nextColumn->GetNext();
1.1348 + }
1.1349 +
1.1350 + if (nextColumn) {
1.1351 + nsAutoString nextText;
1.1352 + mView->GetCellText(aRowIndex, nextColumn, nextText);
1.1353 + // We don't measure or draw this text so no need to check it for
1.1354 + // bidi-ness
1.1355 +
1.1356 + if (nextText.Length() == 0) {
1.1357 + nscoord width;
1.1358 + rv = nextColumn->GetWidthInTwips(this, &width);
1.1359 + NS_ASSERTION(NS_SUCCEEDED(rv), "nextColumn is invalid");
1.1360 +
1.1361 + maxWidth += width;
1.1362 +
1.1363 + nextColumn = nextColumn->GetNext();
1.1364 + }
1.1365 + else {
1.1366 + nextColumn = nullptr;
1.1367 + }
1.1368 + }
1.1369 + }
1.1370 + }
1.1371 +
1.1372 + if (width > maxWidth) {
1.1373 + // See if the width is even smaller than the ellipsis
1.1374 + // If so, clear the text completely.
1.1375 + const nsDependentString& kEllipsis = nsContentUtils::GetLocalizedEllipsis();
1.1376 + aRenderingContext.SetTextRunRTL(false);
1.1377 + nscoord ellipsisWidth = aRenderingContext.GetWidth(kEllipsis);
1.1378 +
1.1379 + width = maxWidth;
1.1380 + if (ellipsisWidth > width)
1.1381 + aText.SetLength(0);
1.1382 + else if (ellipsisWidth == width)
1.1383 + aText.Assign(kEllipsis);
1.1384 + else {
1.1385 + // We will be drawing an ellipsis, thank you very much.
1.1386 + // Subtract out the required width of the ellipsis.
1.1387 + // This is the total remaining width we have to play with.
1.1388 + width -= ellipsisWidth;
1.1389 +
1.1390 + // Now we crop.
1.1391 + switch (aColumn->GetCropStyle()) {
1.1392 + default:
1.1393 + case 0: {
1.1394 + // Crop right.
1.1395 + nscoord cwidth;
1.1396 + nscoord twidth = 0;
1.1397 + uint32_t length = aText.Length();
1.1398 + uint32_t i;
1.1399 + for (i = 0; i < length; ++i) {
1.1400 + char16_t ch = aText[i];
1.1401 + // XXX this is horrible and doesn't handle clusters
1.1402 + cwidth = aRenderingContext.GetWidth(ch);
1.1403 + if (twidth + cwidth > width)
1.1404 + break;
1.1405 + twidth += cwidth;
1.1406 + }
1.1407 + aText.Truncate(i);
1.1408 + aText.Append(kEllipsis);
1.1409 + }
1.1410 + break;
1.1411 +
1.1412 + case 2: {
1.1413 + // Crop left.
1.1414 + nscoord cwidth;
1.1415 + nscoord twidth = 0;
1.1416 + int32_t length = aText.Length();
1.1417 + int32_t i;
1.1418 + for (i=length-1; i >= 0; --i) {
1.1419 + char16_t ch = aText[i];
1.1420 + cwidth = aRenderingContext.GetWidth(ch);
1.1421 + if (twidth + cwidth > width)
1.1422 + break;
1.1423 + twidth += cwidth;
1.1424 + }
1.1425 +
1.1426 + nsAutoString copy;
1.1427 + aText.Right(copy, length-1-i);
1.1428 + aText.Assign(kEllipsis);
1.1429 + aText += copy;
1.1430 + }
1.1431 + break;
1.1432 +
1.1433 + case 1:
1.1434 + {
1.1435 + // Crop center.
1.1436 + nsAutoString leftStr, rightStr;
1.1437 + nscoord cwidth, twidth = 0;
1.1438 + int32_t length = aText.Length();
1.1439 + int32_t rightPos = length - 1;
1.1440 + for (int32_t leftPos = 0; leftPos < rightPos; ++leftPos) {
1.1441 + char16_t ch = aText[leftPos];
1.1442 + cwidth = aRenderingContext.GetWidth(ch);
1.1443 + twidth += cwidth;
1.1444 + if (twidth > width)
1.1445 + break;
1.1446 + leftStr.Append(ch);
1.1447 +
1.1448 + ch = aText[rightPos];
1.1449 + cwidth = aRenderingContext.GetWidth(ch);
1.1450 + twidth += cwidth;
1.1451 + if (twidth > width)
1.1452 + break;
1.1453 + rightStr.Insert(ch, 0);
1.1454 + --rightPos;
1.1455 + }
1.1456 + aText = leftStr;
1.1457 + aText.Append(kEllipsis);
1.1458 + aText += rightStr;
1.1459 + }
1.1460 + break;
1.1461 + }
1.1462 + }
1.1463 +
1.1464 + width = nsLayoutUtils::GetStringWidth(this, &aRenderingContext, aText.get(), aText.Length());
1.1465 + }
1.1466 +
1.1467 + switch (aColumn->GetTextAlignment()) {
1.1468 + case NS_STYLE_TEXT_ALIGN_RIGHT: {
1.1469 + aTextRect.x += aTextRect.width - width;
1.1470 + }
1.1471 + break;
1.1472 + case NS_STYLE_TEXT_ALIGN_CENTER: {
1.1473 + aTextRect.x += (aTextRect.width - width) / 2;
1.1474 + }
1.1475 + break;
1.1476 + }
1.1477 +
1.1478 + aTextRect.width = width;
1.1479 +}
1.1480 +
1.1481 +nsIAtom*
1.1482 +nsTreeBodyFrame::GetItemWithinCellAt(nscoord aX, const nsRect& aCellRect,
1.1483 + int32_t aRowIndex,
1.1484 + nsTreeColumn* aColumn)
1.1485 +{
1.1486 + NS_PRECONDITION(aColumn && aColumn->GetFrame(), "invalid column passed");
1.1487 +
1.1488 + // Obtain the properties for our cell.
1.1489 + PrefillPropertyArray(aRowIndex, aColumn);
1.1490 + nsAutoString properties;
1.1491 + mView->GetCellProperties(aRowIndex, aColumn, properties);
1.1492 + nsTreeUtils::TokenizeProperties(properties, mScratchArray);
1.1493 +
1.1494 + // Resolve style for the cell.
1.1495 + nsStyleContext* cellContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreecell);
1.1496 +
1.1497 + // Obtain the margins for the cell and then deflate our rect by that
1.1498 + // amount. The cell is assumed to be contained within the deflated rect.
1.1499 + nsRect cellRect(aCellRect);
1.1500 + nsMargin cellMargin;
1.1501 + cellContext->StyleMargin()->GetMargin(cellMargin);
1.1502 + cellRect.Deflate(cellMargin);
1.1503 +
1.1504 + // Adjust the rect for its border and padding.
1.1505 + AdjustForBorderPadding(cellContext, cellRect);
1.1506 +
1.1507 + if (aX < cellRect.x || aX >= cellRect.x + cellRect.width) {
1.1508 + // The user clicked within the cell's margins/borders/padding. This constitutes a click on the cell.
1.1509 + return nsCSSAnonBoxes::moztreecell;
1.1510 + }
1.1511 +
1.1512 + nscoord currX = cellRect.x;
1.1513 + nscoord remainingWidth = cellRect.width;
1.1514 +
1.1515 + // Handle right alignment hit testing.
1.1516 + bool isRTL = StyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL;
1.1517 +
1.1518 + nsPresContext* presContext = PresContext();
1.1519 + nsRefPtr<nsRenderingContext> rc =
1.1520 + presContext->PresShell()->CreateReferenceRenderingContext();
1.1521 +
1.1522 + if (aColumn->IsPrimary()) {
1.1523 + // If we're the primary column, we have indentation and a twisty.
1.1524 + int32_t level;
1.1525 + mView->GetLevel(aRowIndex, &level);
1.1526 +
1.1527 + if (!isRTL)
1.1528 + currX += mIndentation*level;
1.1529 + remainingWidth -= mIndentation*level;
1.1530 +
1.1531 + if ((isRTL && aX > currX + remainingWidth) ||
1.1532 + (!isRTL && aX < currX)) {
1.1533 + // The user clicked within the indentation.
1.1534 + return nsCSSAnonBoxes::moztreecell;
1.1535 + }
1.1536 +
1.1537 + // Always leave space for the twisty.
1.1538 + nsRect twistyRect(currX, cellRect.y, remainingWidth, cellRect.height);
1.1539 + bool hasTwisty = false;
1.1540 + bool isContainer = false;
1.1541 + mView->IsContainer(aRowIndex, &isContainer);
1.1542 + if (isContainer) {
1.1543 + bool isContainerEmpty = false;
1.1544 + mView->IsContainerEmpty(aRowIndex, &isContainerEmpty);
1.1545 + if (!isContainerEmpty)
1.1546 + hasTwisty = true;
1.1547 + }
1.1548 +
1.1549 + // Resolve style for the twisty.
1.1550 + nsStyleContext* twistyContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreetwisty);
1.1551 +
1.1552 + nsRect imageSize;
1.1553 + GetTwistyRect(aRowIndex, aColumn, imageSize, twistyRect, presContext,
1.1554 + *rc, twistyContext);
1.1555 +
1.1556 + // We will treat a click as hitting the twisty if it happens on the margins, borders, padding,
1.1557 + // or content of the twisty object. By allowing a "slop" into the margin, we make it a little
1.1558 + // bit easier for a user to hit the twisty. (We don't want to be too picky here.)
1.1559 + nsMargin twistyMargin;
1.1560 + twistyContext->StyleMargin()->GetMargin(twistyMargin);
1.1561 + twistyRect.Inflate(twistyMargin);
1.1562 + if (isRTL)
1.1563 + twistyRect.x = currX + remainingWidth - twistyRect.width;
1.1564 +
1.1565 + // Now we test to see if aX is actually within the twistyRect. If it is, and if the item should
1.1566 + // have a twisty, then we return "twisty". If it is within the rect but we shouldn't have a twisty,
1.1567 + // then we return "cell".
1.1568 + if (aX >= twistyRect.x && aX < twistyRect.x + twistyRect.width) {
1.1569 + if (hasTwisty)
1.1570 + return nsCSSAnonBoxes::moztreetwisty;
1.1571 + else
1.1572 + return nsCSSAnonBoxes::moztreecell;
1.1573 + }
1.1574 +
1.1575 + if (!isRTL)
1.1576 + currX += twistyRect.width;
1.1577 + remainingWidth -= twistyRect.width;
1.1578 + }
1.1579 +
1.1580 + // Now test to see if the user hit the icon for the cell.
1.1581 + nsRect iconRect(currX, cellRect.y, remainingWidth, cellRect.height);
1.1582 +
1.1583 + // Resolve style for the image.
1.1584 + nsStyleContext* imageContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreeimage);
1.1585 +
1.1586 + nsRect iconSize = GetImageSize(aRowIndex, aColumn, false, imageContext);
1.1587 + nsMargin imageMargin;
1.1588 + imageContext->StyleMargin()->GetMargin(imageMargin);
1.1589 + iconSize.Inflate(imageMargin);
1.1590 + iconRect.width = iconSize.width;
1.1591 + if (isRTL)
1.1592 + iconRect.x = currX + remainingWidth - iconRect.width;
1.1593 +
1.1594 + if (aX >= iconRect.x && aX < iconRect.x + iconRect.width) {
1.1595 + // The user clicked on the image.
1.1596 + return nsCSSAnonBoxes::moztreeimage;
1.1597 + }
1.1598 +
1.1599 + if (!isRTL)
1.1600 + currX += iconRect.width;
1.1601 + remainingWidth -= iconRect.width;
1.1602 +
1.1603 + nsAutoString cellText;
1.1604 + mView->GetCellText(aRowIndex, aColumn, cellText);
1.1605 + // We're going to measure this text so we need to ensure bidi is enabled if
1.1606 + // necessary
1.1607 + CheckTextForBidi(cellText);
1.1608 +
1.1609 + nsRect textRect(currX, cellRect.y, remainingWidth, cellRect.height);
1.1610 +
1.1611 + nsStyleContext* textContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreecelltext);
1.1612 +
1.1613 + nsMargin textMargin;
1.1614 + textContext->StyleMargin()->GetMargin(textMargin);
1.1615 + textRect.Deflate(textMargin);
1.1616 +
1.1617 + AdjustForBorderPadding(textContext, textRect);
1.1618 +
1.1619 + nsRefPtr<nsFontMetrics> fm;
1.1620 + nsLayoutUtils::GetFontMetricsForStyleContext(textContext,
1.1621 + getter_AddRefs(fm));
1.1622 + rc->SetFont(fm);
1.1623 +
1.1624 + AdjustForCellText(cellText, aRowIndex, aColumn, *rc, textRect);
1.1625 +
1.1626 + if (aX >= textRect.x && aX < textRect.x + textRect.width)
1.1627 + return nsCSSAnonBoxes::moztreecelltext;
1.1628 + else
1.1629 + return nsCSSAnonBoxes::moztreecell;
1.1630 +}
1.1631 +
1.1632 +void
1.1633 +nsTreeBodyFrame::GetCellAt(nscoord aX, nscoord aY, int32_t* aRow,
1.1634 + nsTreeColumn** aCol, nsIAtom** aChildElt)
1.1635 +{
1.1636 + *aCol = nullptr;
1.1637 + *aChildElt = nullptr;
1.1638 +
1.1639 + *aRow = GetRowAt(aX, aY);
1.1640 + if (*aRow < 0)
1.1641 + return;
1.1642 +
1.1643 + // Determine the column hit.
1.1644 + for (nsTreeColumn* currCol = mColumns->GetFirstColumn(); currCol;
1.1645 + currCol = currCol->GetNext()) {
1.1646 + nsRect cellRect;
1.1647 + nsresult rv = currCol->GetRect(this,
1.1648 + mInnerBox.y +
1.1649 + mRowHeight * (*aRow - mTopRowIndex),
1.1650 + mRowHeight,
1.1651 + &cellRect);
1.1652 + if (NS_FAILED(rv)) {
1.1653 + NS_NOTREACHED("column has no frame");
1.1654 + continue;
1.1655 + }
1.1656 +
1.1657 + if (!OffsetForHorzScroll(cellRect, false))
1.1658 + continue;
1.1659 +
1.1660 + if (aX >= cellRect.x && aX < cellRect.x + cellRect.width) {
1.1661 + // We know the column hit now.
1.1662 + *aCol = currCol;
1.1663 +
1.1664 + if (currCol->IsCycler())
1.1665 + // Cyclers contain only images. Fill this in immediately and return.
1.1666 + *aChildElt = nsCSSAnonBoxes::moztreeimage;
1.1667 + else
1.1668 + *aChildElt = GetItemWithinCellAt(aX, cellRect, *aRow, currCol);
1.1669 + break;
1.1670 + }
1.1671 + }
1.1672 +}
1.1673 +
1.1674 +nsresult
1.1675 +nsTreeBodyFrame::GetCellWidth(int32_t aRow, nsTreeColumn* aCol,
1.1676 + nsRenderingContext* aRenderingContext,
1.1677 + nscoord& aDesiredSize, nscoord& aCurrentSize)
1.1678 +{
1.1679 + NS_PRECONDITION(aCol, "aCol must not be null");
1.1680 + NS_PRECONDITION(aRenderingContext, "aRenderingContext must not be null");
1.1681 +
1.1682 + // The rect for the current cell.
1.1683 + nscoord colWidth;
1.1684 + nsresult rv = aCol->GetWidthInTwips(this, &colWidth);
1.1685 + NS_ENSURE_SUCCESS(rv, rv);
1.1686 +
1.1687 + nsRect cellRect(0, 0, colWidth, mRowHeight);
1.1688 +
1.1689 + int32_t overflow = cellRect.x+cellRect.width-(mInnerBox.x+mInnerBox.width);
1.1690 + if (overflow > 0)
1.1691 + cellRect.width -= overflow;
1.1692 +
1.1693 + // Adjust borders and padding for the cell.
1.1694 + nsStyleContext* cellContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreecell);
1.1695 + nsMargin bp(0,0,0,0);
1.1696 + GetBorderPadding(cellContext, bp);
1.1697 +
1.1698 + aCurrentSize = cellRect.width;
1.1699 + aDesiredSize = bp.left + bp.right;
1.1700 +
1.1701 + if (aCol->IsPrimary()) {
1.1702 + // If the current Column is a Primary, then we need to take into account
1.1703 + // the indentation and possibly a twisty.
1.1704 +
1.1705 + // The amount of indentation is the indentation width (|mIndentation|) by the level.
1.1706 + int32_t level;
1.1707 + mView->GetLevel(aRow, &level);
1.1708 + aDesiredSize += mIndentation * level;
1.1709 +
1.1710 + // Find the twisty rect by computing its size.
1.1711 + nsStyleContext* twistyContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreetwisty);
1.1712 +
1.1713 + nsRect imageSize;
1.1714 + nsRect twistyRect(cellRect);
1.1715 + GetTwistyRect(aRow, aCol, imageSize, twistyRect, PresContext(),
1.1716 + *aRenderingContext, twistyContext);
1.1717 +
1.1718 + // Add in the margins of the twisty element.
1.1719 + nsMargin twistyMargin;
1.1720 + twistyContext->StyleMargin()->GetMargin(twistyMargin);
1.1721 + twistyRect.Inflate(twistyMargin);
1.1722 +
1.1723 + aDesiredSize += twistyRect.width;
1.1724 + }
1.1725 +
1.1726 + nsStyleContext* imageContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreeimage);
1.1727 +
1.1728 + // Account for the width of the cell image.
1.1729 + nsRect imageSize = GetImageSize(aRow, aCol, false, imageContext);
1.1730 + // Add in the margins of the cell image.
1.1731 + nsMargin imageMargin;
1.1732 + imageContext->StyleMargin()->GetMargin(imageMargin);
1.1733 + imageSize.Inflate(imageMargin);
1.1734 +
1.1735 + aDesiredSize += imageSize.width;
1.1736 +
1.1737 + // Get the cell text.
1.1738 + nsAutoString cellText;
1.1739 + mView->GetCellText(aRow, aCol, cellText);
1.1740 + // We're going to measure this text so we need to ensure bidi is enabled if
1.1741 + // necessary
1.1742 + CheckTextForBidi(cellText);
1.1743 +
1.1744 + nsStyleContext* textContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreecelltext);
1.1745 +
1.1746 + // Get the borders and padding for the text.
1.1747 + GetBorderPadding(textContext, bp);
1.1748 +
1.1749 + nsRefPtr<nsFontMetrics> fm;
1.1750 + nsLayoutUtils::GetFontMetricsForStyleContext(textContext,
1.1751 + getter_AddRefs(fm));
1.1752 + aRenderingContext->SetFont(fm);
1.1753 +
1.1754 + // Get the width of the text itself
1.1755 + nscoord width =
1.1756 + nsLayoutUtils::GetStringWidth(this, aRenderingContext, cellText.get(), cellText.Length());
1.1757 + nscoord totalTextWidth = width + bp.left + bp.right;
1.1758 + aDesiredSize += totalTextWidth;
1.1759 + return NS_OK;
1.1760 +}
1.1761 +
1.1762 +nsresult
1.1763 +nsTreeBodyFrame::IsCellCropped(int32_t aRow, nsITreeColumn* aCol, bool *_retval)
1.1764 +{
1.1765 + nscoord currentSize, desiredSize;
1.1766 + nsresult rv;
1.1767 +
1.1768 + nsRefPtr<nsTreeColumn> col = GetColumnImpl(aCol);
1.1769 + if (!col)
1.1770 + return NS_ERROR_INVALID_ARG;
1.1771 +
1.1772 + nsRefPtr<nsRenderingContext> rc =
1.1773 + PresContext()->PresShell()->CreateReferenceRenderingContext();
1.1774 +
1.1775 + rv = GetCellWidth(aRow, col, rc, desiredSize, currentSize);
1.1776 + NS_ENSURE_SUCCESS(rv, rv);
1.1777 +
1.1778 + *_retval = desiredSize > currentSize;
1.1779 +
1.1780 + return NS_OK;
1.1781 +}
1.1782 +
1.1783 +void
1.1784 +nsTreeBodyFrame::MarkDirtyIfSelect()
1.1785 +{
1.1786 + nsIContent* baseElement = GetBaseElement();
1.1787 +
1.1788 + if (baseElement && baseElement->Tag() == nsGkAtoms::select &&
1.1789 + baseElement->IsHTML()) {
1.1790 + // If we are an intrinsically sized select widget, we may need to
1.1791 + // resize, if the widest item was removed or a new item was added.
1.1792 + // XXX optimize this more
1.1793 +
1.1794 + mStringWidth = -1;
1.1795 + PresContext()->PresShell()->FrameNeedsReflow(this,
1.1796 + nsIPresShell::eTreeChange,
1.1797 + NS_FRAME_IS_DIRTY);
1.1798 + }
1.1799 +}
1.1800 +
1.1801 +nsresult
1.1802 +nsTreeBodyFrame::CreateTimer(const LookAndFeel::IntID aID,
1.1803 + nsTimerCallbackFunc aFunc, int32_t aType,
1.1804 + nsITimer** aTimer)
1.1805 +{
1.1806 + // Get the delay from the look and feel service.
1.1807 + int32_t delay = LookAndFeel::GetInt(aID, 0);
1.1808 +
1.1809 + nsCOMPtr<nsITimer> timer;
1.1810 +
1.1811 + // Create a new timer only if the delay is greater than zero.
1.1812 + // Zero value means that this feature is completely disabled.
1.1813 + if (delay > 0) {
1.1814 + timer = do_CreateInstance("@mozilla.org/timer;1");
1.1815 + if (timer)
1.1816 + timer->InitWithFuncCallback(aFunc, this, delay, aType);
1.1817 + }
1.1818 +
1.1819 + NS_IF_ADDREF(*aTimer = timer);
1.1820 +
1.1821 + return NS_OK;
1.1822 +}
1.1823 +
1.1824 +nsresult
1.1825 +nsTreeBodyFrame::RowCountChanged(int32_t aIndex, int32_t aCount)
1.1826 +{
1.1827 + if (aCount == 0 || !mView)
1.1828 + return NS_OK; // Nothing to do.
1.1829 +
1.1830 +#ifdef ACCESSIBILITY
1.1831 + if (nsIPresShell::IsAccessibilityActive())
1.1832 + FireRowCountChangedEvent(aIndex, aCount);
1.1833 +#endif
1.1834 +
1.1835 + // Adjust our selection.
1.1836 + nsCOMPtr<nsITreeSelection> sel;
1.1837 + mView->GetSelection(getter_AddRefs(sel));
1.1838 + if (sel)
1.1839 + sel->AdjustSelection(aIndex, aCount);
1.1840 +
1.1841 + if (mUpdateBatchNest)
1.1842 + return NS_OK;
1.1843 +
1.1844 + mRowCount += aCount;
1.1845 +#ifdef DEBUG
1.1846 + int32_t rowCount = mRowCount;
1.1847 + mView->GetRowCount(&rowCount);
1.1848 + NS_ASSERTION(rowCount == mRowCount, "row count did not change by the amount suggested, check caller");
1.1849 +#endif
1.1850 +
1.1851 + int32_t count = Abs(aCount);
1.1852 + int32_t last = LastVisibleRow();
1.1853 + if (aIndex >= mTopRowIndex && aIndex <= last)
1.1854 + InvalidateRange(aIndex, last);
1.1855 +
1.1856 + ScrollParts parts = GetScrollParts();
1.1857 +
1.1858 + if (mTopRowIndex == 0) {
1.1859 + // Just update the scrollbar and return.
1.1860 + if (FullScrollbarsUpdate(false)) {
1.1861 + MarkDirtyIfSelect();
1.1862 + }
1.1863 + return NS_OK;
1.1864 + }
1.1865 +
1.1866 + bool needsInvalidation = false;
1.1867 + // Adjust our top row index.
1.1868 + if (aCount > 0) {
1.1869 + if (mTopRowIndex > aIndex) {
1.1870 + // Rows came in above us. Augment the top row index.
1.1871 + mTopRowIndex += aCount;
1.1872 + }
1.1873 + }
1.1874 + else if (aCount < 0) {
1.1875 + if (mTopRowIndex > aIndex+count-1) {
1.1876 + // No need to invalidate. The remove happened
1.1877 + // completely above us (offscreen).
1.1878 + mTopRowIndex -= count;
1.1879 + }
1.1880 + else if (mTopRowIndex >= aIndex) {
1.1881 + // This is a full-blown invalidate.
1.1882 + if (mTopRowIndex + mPageLength > mRowCount - 1) {
1.1883 + mTopRowIndex = std::max(0, mRowCount - 1 - mPageLength);
1.1884 + }
1.1885 + needsInvalidation = true;
1.1886 + }
1.1887 + }
1.1888 +
1.1889 + if (FullScrollbarsUpdate(needsInvalidation)) {
1.1890 + MarkDirtyIfSelect();
1.1891 + }
1.1892 + return NS_OK;
1.1893 +}
1.1894 +
1.1895 +nsresult
1.1896 +nsTreeBodyFrame::BeginUpdateBatch()
1.1897 +{
1.1898 + ++mUpdateBatchNest;
1.1899 +
1.1900 + return NS_OK;
1.1901 +}
1.1902 +
1.1903 +nsresult
1.1904 +nsTreeBodyFrame::EndUpdateBatch()
1.1905 +{
1.1906 + NS_ASSERTION(mUpdateBatchNest > 0, "badly nested update batch");
1.1907 +
1.1908 + if (--mUpdateBatchNest == 0) {
1.1909 + if (mView) {
1.1910 + Invalidate();
1.1911 + int32_t countBeforeUpdate = mRowCount;
1.1912 + mView->GetRowCount(&mRowCount);
1.1913 + if (countBeforeUpdate != mRowCount) {
1.1914 + if (mTopRowIndex + mPageLength > mRowCount - 1) {
1.1915 + mTopRowIndex = std::max(0, mRowCount - 1 - mPageLength);
1.1916 + }
1.1917 + FullScrollbarsUpdate(false);
1.1918 + }
1.1919 + }
1.1920 + }
1.1921 +
1.1922 + return NS_OK;
1.1923 +}
1.1924 +
1.1925 +void
1.1926 +nsTreeBodyFrame::PrefillPropertyArray(int32_t aRowIndex, nsTreeColumn* aCol)
1.1927 +{
1.1928 + NS_PRECONDITION(!aCol || aCol->GetFrame(), "invalid column passed");
1.1929 + mScratchArray.Clear();
1.1930 +
1.1931 + // focus
1.1932 + if (mFocused)
1.1933 + mScratchArray.AppendElement(nsGkAtoms::focus);
1.1934 +
1.1935 + // sort
1.1936 + bool sorted = false;
1.1937 + mView->IsSorted(&sorted);
1.1938 + if (sorted)
1.1939 + mScratchArray.AppendElement(nsGkAtoms::sorted);
1.1940 +
1.1941 + // drag session
1.1942 + if (mSlots && mSlots->mIsDragging)
1.1943 + mScratchArray.AppendElement(nsGkAtoms::dragSession);
1.1944 +
1.1945 + if (aRowIndex != -1) {
1.1946 + if (aRowIndex == mMouseOverRow)
1.1947 + mScratchArray.AppendElement(nsGkAtoms::hover);
1.1948 +
1.1949 + nsCOMPtr<nsITreeSelection> selection;
1.1950 + mView->GetSelection(getter_AddRefs(selection));
1.1951 +
1.1952 + if (selection) {
1.1953 + // selected
1.1954 + bool isSelected;
1.1955 + selection->IsSelected(aRowIndex, &isSelected);
1.1956 + if (isSelected)
1.1957 + mScratchArray.AppendElement(nsGkAtoms::selected);
1.1958 +
1.1959 + // current
1.1960 + int32_t currentIndex;
1.1961 + selection->GetCurrentIndex(¤tIndex);
1.1962 + if (aRowIndex == currentIndex)
1.1963 + mScratchArray.AppendElement(nsGkAtoms::current);
1.1964 +
1.1965 + // active
1.1966 + if (aCol) {
1.1967 + nsCOMPtr<nsITreeColumn> currentColumn;
1.1968 + selection->GetCurrentColumn(getter_AddRefs(currentColumn));
1.1969 + if (aCol == currentColumn)
1.1970 + mScratchArray.AppendElement(nsGkAtoms::active);
1.1971 + }
1.1972 + }
1.1973 +
1.1974 + // container or leaf
1.1975 + bool isContainer = false;
1.1976 + mView->IsContainer(aRowIndex, &isContainer);
1.1977 + if (isContainer) {
1.1978 + mScratchArray.AppendElement(nsGkAtoms::container);
1.1979 +
1.1980 + // open or closed
1.1981 + bool isOpen = false;
1.1982 + mView->IsContainerOpen(aRowIndex, &isOpen);
1.1983 + if (isOpen)
1.1984 + mScratchArray.AppendElement(nsGkAtoms::open);
1.1985 + else
1.1986 + mScratchArray.AppendElement(nsGkAtoms::closed);
1.1987 + }
1.1988 + else {
1.1989 + mScratchArray.AppendElement(nsGkAtoms::leaf);
1.1990 + }
1.1991 +
1.1992 + // drop orientation
1.1993 + if (mSlots && mSlots->mDropAllowed && mSlots->mDropRow == aRowIndex) {
1.1994 + if (mSlots->mDropOrient == nsITreeView::DROP_BEFORE)
1.1995 + mScratchArray.AppendElement(nsGkAtoms::dropBefore);
1.1996 + else if (mSlots->mDropOrient == nsITreeView::DROP_ON)
1.1997 + mScratchArray.AppendElement(nsGkAtoms::dropOn);
1.1998 + else if (mSlots->mDropOrient == nsITreeView::DROP_AFTER)
1.1999 + mScratchArray.AppendElement(nsGkAtoms::dropAfter);
1.2000 + }
1.2001 +
1.2002 + // odd or even
1.2003 + if (aRowIndex % 2)
1.2004 + mScratchArray.AppendElement(nsGkAtoms::odd);
1.2005 + else
1.2006 + mScratchArray.AppendElement(nsGkAtoms::even);
1.2007 +
1.2008 + nsIContent* baseContent = GetBaseElement();
1.2009 + if (baseContent && baseContent->HasAttr(kNameSpaceID_None, nsGkAtoms::editing))
1.2010 + mScratchArray.AppendElement(nsGkAtoms::editing);
1.2011 +
1.2012 + // multiple columns
1.2013 + if (mColumns->GetColumnAt(1))
1.2014 + mScratchArray.AppendElement(nsGkAtoms::multicol);
1.2015 + }
1.2016 +
1.2017 + if (aCol) {
1.2018 + mScratchArray.AppendElement(aCol->GetAtom());
1.2019 +
1.2020 + if (aCol->IsPrimary())
1.2021 + mScratchArray.AppendElement(nsGkAtoms::primary);
1.2022 +
1.2023 + if (aCol->GetType() == nsITreeColumn::TYPE_CHECKBOX) {
1.2024 + mScratchArray.AppendElement(nsGkAtoms::checkbox);
1.2025 +
1.2026 + if (aRowIndex != -1) {
1.2027 + nsAutoString value;
1.2028 + mView->GetCellValue(aRowIndex, aCol, value);
1.2029 + if (value.EqualsLiteral("true"))
1.2030 + mScratchArray.AppendElement(nsGkAtoms::checked);
1.2031 + }
1.2032 + }
1.2033 + else if (aCol->GetType() == nsITreeColumn::TYPE_PROGRESSMETER) {
1.2034 + mScratchArray.AppendElement(nsGkAtoms::progressmeter);
1.2035 +
1.2036 + if (aRowIndex != -1) {
1.2037 + int32_t state;
1.2038 + mView->GetProgressMode(aRowIndex, aCol, &state);
1.2039 + if (state == nsITreeView::PROGRESS_NORMAL)
1.2040 + mScratchArray.AppendElement(nsGkAtoms::progressNormal);
1.2041 + else if (state == nsITreeView::PROGRESS_UNDETERMINED)
1.2042 + mScratchArray.AppendElement(nsGkAtoms::progressUndetermined);
1.2043 + }
1.2044 + }
1.2045 +
1.2046 + // Read special properties from attributes on the column content node
1.2047 + if (aCol->mContent->AttrValueIs(kNameSpaceID_None,
1.2048 + nsGkAtoms::insertbefore,
1.2049 + nsGkAtoms::_true, eCaseMatters))
1.2050 + mScratchArray.AppendElement(nsGkAtoms::insertbefore);
1.2051 + if (aCol->mContent->AttrValueIs(kNameSpaceID_None,
1.2052 + nsGkAtoms::insertafter,
1.2053 + nsGkAtoms::_true, eCaseMatters))
1.2054 + mScratchArray.AppendElement(nsGkAtoms::insertafter);
1.2055 + }
1.2056 +}
1.2057 +
1.2058 +nsITheme*
1.2059 +nsTreeBodyFrame::GetTwistyRect(int32_t aRowIndex,
1.2060 + nsTreeColumn* aColumn,
1.2061 + nsRect& aImageRect,
1.2062 + nsRect& aTwistyRect,
1.2063 + nsPresContext* aPresContext,
1.2064 + nsRenderingContext& aRenderingContext,
1.2065 + nsStyleContext* aTwistyContext)
1.2066 +{
1.2067 + // The twisty rect extends all the way to the end of the cell. This is incorrect. We need to
1.2068 + // determine the twisty rect's true width. This is done by examining the style context for
1.2069 + // a width first. If it has one, we use that. If it doesn't, we use the image's natural width.
1.2070 + // If the image hasn't loaded and if no width is specified, then we just bail. If there is
1.2071 + // a -moz-appearance involved, adjust the rect by the minimum widget size provided by
1.2072 + // the theme implementation.
1.2073 + aImageRect = GetImageSize(aRowIndex, aColumn, true, aTwistyContext);
1.2074 + if (aImageRect.height > aTwistyRect.height)
1.2075 + aImageRect.height = aTwistyRect.height;
1.2076 + if (aImageRect.width > aTwistyRect.width)
1.2077 + aImageRect.width = aTwistyRect.width;
1.2078 + else
1.2079 + aTwistyRect.width = aImageRect.width;
1.2080 +
1.2081 + bool useTheme = false;
1.2082 + nsITheme *theme = nullptr;
1.2083 + const nsStyleDisplay* twistyDisplayData = aTwistyContext->StyleDisplay();
1.2084 + if (twistyDisplayData->mAppearance) {
1.2085 + theme = aPresContext->GetTheme();
1.2086 + if (theme && theme->ThemeSupportsWidget(aPresContext, nullptr, twistyDisplayData->mAppearance))
1.2087 + useTheme = true;
1.2088 + }
1.2089 +
1.2090 + if (useTheme) {
1.2091 + nsIntSize minTwistySizePx(0,0);
1.2092 + bool canOverride = true;
1.2093 + theme->GetMinimumWidgetSize(&aRenderingContext, this, twistyDisplayData->mAppearance,
1.2094 + &minTwistySizePx, &canOverride);
1.2095 +
1.2096 + // GMWS() returns size in pixels, we need to convert it back to app units
1.2097 + nsSize minTwistySize;
1.2098 + minTwistySize.width = aPresContext->DevPixelsToAppUnits(minTwistySizePx.width);
1.2099 + minTwistySize.height = aPresContext->DevPixelsToAppUnits(minTwistySizePx.height);
1.2100 +
1.2101 + if (aTwistyRect.width < minTwistySize.width || !canOverride)
1.2102 + aTwistyRect.width = minTwistySize.width;
1.2103 + }
1.2104 +
1.2105 + return useTheme ? theme : nullptr;
1.2106 +}
1.2107 +
1.2108 +nsresult
1.2109 +nsTreeBodyFrame::GetImage(int32_t aRowIndex, nsTreeColumn* aCol, bool aUseContext,
1.2110 + nsStyleContext* aStyleContext, bool& aAllowImageRegions, imgIContainer** aResult)
1.2111 +{
1.2112 + *aResult = nullptr;
1.2113 +
1.2114 + nsAutoString imageSrc;
1.2115 + mView->GetImageSrc(aRowIndex, aCol, imageSrc);
1.2116 + nsRefPtr<imgRequestProxy> styleRequest;
1.2117 + if (!aUseContext && !imageSrc.IsEmpty()) {
1.2118 + aAllowImageRegions = false;
1.2119 + }
1.2120 + else {
1.2121 + // Obtain the URL from the style context.
1.2122 + aAllowImageRegions = true;
1.2123 + styleRequest = aStyleContext->StyleList()->GetListStyleImage();
1.2124 + if (!styleRequest)
1.2125 + return NS_OK;
1.2126 + nsCOMPtr<nsIURI> uri;
1.2127 + styleRequest->GetURI(getter_AddRefs(uri));
1.2128 + nsAutoCString spec;
1.2129 + uri->GetSpec(spec);
1.2130 + CopyUTF8toUTF16(spec, imageSrc);
1.2131 + }
1.2132 +
1.2133 + // Look the image up in our cache.
1.2134 + nsTreeImageCacheEntry entry;
1.2135 + if (mImageCache.Get(imageSrc, &entry)) {
1.2136 + // Find out if the image has loaded.
1.2137 + uint32_t status;
1.2138 + imgIRequest *imgReq = entry.request;
1.2139 + imgReq->GetImageStatus(&status);
1.2140 + imgReq->GetImage(aResult); // We hand back the image here. The GetImage call addrefs *aResult.
1.2141 + bool animated = true; // Assuming animated is the safe option
1.2142 +
1.2143 + // We can only call GetAnimated if we're decoded
1.2144 + if (*aResult && (status & imgIRequest::STATUS_DECODE_COMPLETE))
1.2145 + (*aResult)->GetAnimated(&animated);
1.2146 +
1.2147 + if ((!(status & imgIRequest::STATUS_LOAD_COMPLETE)) || animated) {
1.2148 + // We either aren't done loading, or we're animating. Add our row as a listener for invalidations.
1.2149 + nsCOMPtr<imgINotificationObserver> obs;
1.2150 + imgReq->GetNotificationObserver(getter_AddRefs(obs));
1.2151 +
1.2152 + if (obs) {
1.2153 + static_cast<nsTreeImageListener*> (obs.get())->AddCell(aRowIndex, aCol);
1.2154 + }
1.2155 +
1.2156 + return NS_OK;
1.2157 + }
1.2158 + }
1.2159 +
1.2160 + if (!*aResult) {
1.2161 + // Create a new nsTreeImageListener object and pass it our row and column
1.2162 + // information.
1.2163 + nsTreeImageListener* listener = new nsTreeImageListener(this);
1.2164 + if (!listener)
1.2165 + return NS_ERROR_OUT_OF_MEMORY;
1.2166 +
1.2167 + if (!mCreatedListeners.PutEntry(listener)) {
1.2168 + return NS_ERROR_FAILURE;
1.2169 + }
1.2170 +
1.2171 + listener->AddCell(aRowIndex, aCol);
1.2172 + nsCOMPtr<imgINotificationObserver> imgNotificationObserver = listener;
1.2173 +
1.2174 + nsRefPtr<imgRequestProxy> imageRequest;
1.2175 + if (styleRequest) {
1.2176 + styleRequest->Clone(imgNotificationObserver, getter_AddRefs(imageRequest));
1.2177 + } else {
1.2178 + nsIDocument* doc = mContent->GetDocument();
1.2179 + if (!doc)
1.2180 + // The page is currently being torn down. Why bother.
1.2181 + return NS_ERROR_FAILURE;
1.2182 +
1.2183 + nsCOMPtr<nsIURI> baseURI = mContent->GetBaseURI();
1.2184 +
1.2185 + nsCOMPtr<nsIURI> srcURI;
1.2186 + nsContentUtils::NewURIWithDocumentCharset(getter_AddRefs(srcURI),
1.2187 + imageSrc,
1.2188 + doc,
1.2189 + baseURI);
1.2190 + if (!srcURI)
1.2191 + return NS_ERROR_FAILURE;
1.2192 +
1.2193 + // XXXbz what's the origin principal for this stuff that comes from our
1.2194 + // view? I guess we should assume that it's the node's principal...
1.2195 + if (nsContentUtils::CanLoadImage(srcURI, mContent, doc,
1.2196 + mContent->NodePrincipal())) {
1.2197 + nsresult rv = nsContentUtils::LoadImage(srcURI,
1.2198 + doc,
1.2199 + mContent->NodePrincipal(),
1.2200 + doc->GetDocumentURI(),
1.2201 + imgNotificationObserver,
1.2202 + nsIRequest::LOAD_NORMAL,
1.2203 + EmptyString(),
1.2204 + getter_AddRefs(imageRequest));
1.2205 + NS_ENSURE_SUCCESS(rv, rv);
1.2206 +
1.2207 + }
1.2208 + }
1.2209 + listener->UnsuppressInvalidation();
1.2210 +
1.2211 + if (!imageRequest)
1.2212 + return NS_ERROR_FAILURE;
1.2213 +
1.2214 + // We don't want discarding/decode-on-draw for xul images
1.2215 + imageRequest->StartDecoding();
1.2216 + imageRequest->LockImage();
1.2217 +
1.2218 + // In a case it was already cached.
1.2219 + imageRequest->GetImage(aResult);
1.2220 + nsTreeImageCacheEntry cacheEntry(imageRequest, imgNotificationObserver);
1.2221 + mImageCache.Put(imageSrc, cacheEntry);
1.2222 + }
1.2223 + return NS_OK;
1.2224 +}
1.2225 +
1.2226 +nsRect nsTreeBodyFrame::GetImageSize(int32_t aRowIndex, nsTreeColumn* aCol, bool aUseContext,
1.2227 + nsStyleContext* aStyleContext)
1.2228 +{
1.2229 + // XXX We should respond to visibility rules for collapsed vs. hidden.
1.2230 +
1.2231 + // This method returns the width of the twisty INCLUDING borders and padding.
1.2232 + // It first checks the style context for a width. If none is found, it tries to
1.2233 + // use the default image width for the twisty. If no image is found, it defaults
1.2234 + // to border+padding.
1.2235 + nsRect r(0,0,0,0);
1.2236 + nsMargin bp(0,0,0,0);
1.2237 + GetBorderPadding(aStyleContext, bp);
1.2238 + r.Inflate(bp);
1.2239 +
1.2240 + // Now r contains our border+padding info. We now need to get our width and
1.2241 + // height.
1.2242 + bool needWidth = false;
1.2243 + bool needHeight = false;
1.2244 +
1.2245 + // We have to load image even though we already have a size.
1.2246 + // Don't change this, otherwise things start to go crazy.
1.2247 + bool useImageRegion = true;
1.2248 + nsCOMPtr<imgIContainer> image;
1.2249 + GetImage(aRowIndex, aCol, aUseContext, aStyleContext, useImageRegion, getter_AddRefs(image));
1.2250 +
1.2251 + const nsStylePosition* myPosition = aStyleContext->StylePosition();
1.2252 + const nsStyleList* myList = aStyleContext->StyleList();
1.2253 +
1.2254 + if (useImageRegion) {
1.2255 + r.x += myList->mImageRegion.x;
1.2256 + r.y += myList->mImageRegion.y;
1.2257 + }
1.2258 +
1.2259 + if (myPosition->mWidth.GetUnit() == eStyleUnit_Coord) {
1.2260 + int32_t val = myPosition->mWidth.GetCoordValue();
1.2261 + r.width += val;
1.2262 + }
1.2263 + else if (useImageRegion && myList->mImageRegion.width > 0)
1.2264 + r.width += myList->mImageRegion.width;
1.2265 + else
1.2266 + needWidth = true;
1.2267 +
1.2268 + if (myPosition->mHeight.GetUnit() == eStyleUnit_Coord) {
1.2269 + int32_t val = myPosition->mHeight.GetCoordValue();
1.2270 + r.height += val;
1.2271 + }
1.2272 + else if (useImageRegion && myList->mImageRegion.height > 0)
1.2273 + r.height += myList->mImageRegion.height;
1.2274 + else
1.2275 + needHeight = true;
1.2276 +
1.2277 + if (image) {
1.2278 + if (needWidth || needHeight) {
1.2279 + // Get the natural image size.
1.2280 +
1.2281 + if (needWidth) {
1.2282 + // Get the size from the image.
1.2283 + nscoord width;
1.2284 + image->GetWidth(&width);
1.2285 + r.width += nsPresContext::CSSPixelsToAppUnits(width);
1.2286 + }
1.2287 +
1.2288 + if (needHeight) {
1.2289 + nscoord height;
1.2290 + image->GetHeight(&height);
1.2291 + r.height += nsPresContext::CSSPixelsToAppUnits(height);
1.2292 + }
1.2293 + }
1.2294 + }
1.2295 +
1.2296 + return r;
1.2297 +}
1.2298 +
1.2299 +// GetImageDestSize returns the destination size of the image.
1.2300 +// The width and height do not include borders and padding.
1.2301 +// The width and height have not been adjusted to fit in the row height
1.2302 +// or cell width.
1.2303 +// The width and height reflect the destination size specified in CSS,
1.2304 +// or the image region specified in CSS, or the natural size of the
1.2305 +// image.
1.2306 +// If only the destination width has been specified in CSS, the height is
1.2307 +// calculated to maintain the aspect ratio of the image.
1.2308 +// If only the destination height has been specified in CSS, the width is
1.2309 +// calculated to maintain the aspect ratio of the image.
1.2310 +nsSize
1.2311 +nsTreeBodyFrame::GetImageDestSize(nsStyleContext* aStyleContext,
1.2312 + bool useImageRegion,
1.2313 + imgIContainer* image)
1.2314 +{
1.2315 + nsSize size(0,0);
1.2316 +
1.2317 + // We need to get the width and height.
1.2318 + bool needWidth = false;
1.2319 + bool needHeight = false;
1.2320 +
1.2321 + // Get the style position to see if the CSS has specified the
1.2322 + // destination width/height.
1.2323 + const nsStylePosition* myPosition = aStyleContext->StylePosition();
1.2324 +
1.2325 + if (myPosition->mWidth.GetUnit() == eStyleUnit_Coord) {
1.2326 + // CSS has specified the destination width.
1.2327 + size.width = myPosition->mWidth.GetCoordValue();
1.2328 + }
1.2329 + else {
1.2330 + // We'll need to get the width of the image/region.
1.2331 + needWidth = true;
1.2332 + }
1.2333 +
1.2334 + if (myPosition->mHeight.GetUnit() == eStyleUnit_Coord) {
1.2335 + // CSS has specified the destination height.
1.2336 + size.height = myPosition->mHeight.GetCoordValue();
1.2337 + }
1.2338 + else {
1.2339 + // We'll need to get the height of the image/region.
1.2340 + needHeight = true;
1.2341 + }
1.2342 +
1.2343 + if (needWidth || needHeight) {
1.2344 + // We need to get the size of the image/region.
1.2345 + nsSize imageSize(0,0);
1.2346 +
1.2347 + const nsStyleList* myList = aStyleContext->StyleList();
1.2348 +
1.2349 + if (useImageRegion && myList->mImageRegion.width > 0) {
1.2350 + // CSS has specified an image region.
1.2351 + // Use the width of the image region.
1.2352 + imageSize.width = myList->mImageRegion.width;
1.2353 + }
1.2354 + else if (image) {
1.2355 + nscoord width;
1.2356 + image->GetWidth(&width);
1.2357 + imageSize.width = nsPresContext::CSSPixelsToAppUnits(width);
1.2358 + }
1.2359 +
1.2360 + if (useImageRegion && myList->mImageRegion.height > 0) {
1.2361 + // CSS has specified an image region.
1.2362 + // Use the height of the image region.
1.2363 + imageSize.height = myList->mImageRegion.height;
1.2364 + }
1.2365 + else if (image) {
1.2366 + nscoord height;
1.2367 + image->GetHeight(&height);
1.2368 + imageSize.height = nsPresContext::CSSPixelsToAppUnits(height);
1.2369 + }
1.2370 +
1.2371 + if (needWidth) {
1.2372 + if (!needHeight && imageSize.height != 0) {
1.2373 + // The CSS specified the destination height, but not the destination
1.2374 + // width. We need to calculate the width so that we maintain the
1.2375 + // image's aspect ratio.
1.2376 + size.width = imageSize.width * size.height / imageSize.height;
1.2377 + }
1.2378 + else {
1.2379 + size.width = imageSize.width;
1.2380 + }
1.2381 + }
1.2382 +
1.2383 + if (needHeight) {
1.2384 + if (!needWidth && imageSize.width != 0) {
1.2385 + // The CSS specified the destination width, but not the destination
1.2386 + // height. We need to calculate the height so that we maintain the
1.2387 + // image's aspect ratio.
1.2388 + size.height = imageSize.height * size.width / imageSize.width;
1.2389 + }
1.2390 + else {
1.2391 + size.height = imageSize.height;
1.2392 + }
1.2393 + }
1.2394 + }
1.2395 +
1.2396 + return size;
1.2397 +}
1.2398 +
1.2399 +// GetImageSourceRect returns the source rectangle of the image to be
1.2400 +// displayed.
1.2401 +// The width and height reflect the image region specified in CSS, or
1.2402 +// the natural size of the image.
1.2403 +// The width and height do not include borders and padding.
1.2404 +// The width and height do not reflect the destination size specified
1.2405 +// in CSS.
1.2406 +nsRect
1.2407 +nsTreeBodyFrame::GetImageSourceRect(nsStyleContext* aStyleContext,
1.2408 + bool useImageRegion,
1.2409 + imgIContainer* image)
1.2410 +{
1.2411 + nsRect r(0,0,0,0);
1.2412 +
1.2413 + const nsStyleList* myList = aStyleContext->StyleList();
1.2414 +
1.2415 + if (useImageRegion &&
1.2416 + (myList->mImageRegion.width > 0 || myList->mImageRegion.height > 0)) {
1.2417 + // CSS has specified an image region.
1.2418 + r = myList->mImageRegion;
1.2419 + }
1.2420 + else if (image) {
1.2421 + // Use the actual image size.
1.2422 + nscoord coord;
1.2423 + image->GetWidth(&coord);
1.2424 + r.width = nsPresContext::CSSPixelsToAppUnits(coord);
1.2425 + image->GetHeight(&coord);
1.2426 + r.height = nsPresContext::CSSPixelsToAppUnits(coord);
1.2427 + }
1.2428 +
1.2429 + return r;
1.2430 +}
1.2431 +
1.2432 +int32_t nsTreeBodyFrame::GetRowHeight()
1.2433 +{
1.2434 + // Look up the correct height. It is equal to the specified height
1.2435 + // + the specified margins.
1.2436 + mScratchArray.Clear();
1.2437 + nsStyleContext* rowContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreerow);
1.2438 + if (rowContext) {
1.2439 + const nsStylePosition* myPosition = rowContext->StylePosition();
1.2440 +
1.2441 + nscoord minHeight = 0;
1.2442 + if (myPosition->mMinHeight.GetUnit() == eStyleUnit_Coord)
1.2443 + minHeight = myPosition->mMinHeight.GetCoordValue();
1.2444 +
1.2445 + nscoord height = 0;
1.2446 + if (myPosition->mHeight.GetUnit() == eStyleUnit_Coord)
1.2447 + height = myPosition->mHeight.GetCoordValue();
1.2448 +
1.2449 + if (height < minHeight)
1.2450 + height = minHeight;
1.2451 +
1.2452 + if (height > 0) {
1.2453 + height = nsPresContext::AppUnitsToIntCSSPixels(height);
1.2454 + height += height % 2;
1.2455 + height = nsPresContext::CSSPixelsToAppUnits(height);
1.2456 +
1.2457 + // XXX Check box-sizing to determine if border/padding should augment the height
1.2458 + // Inflate the height by our margins.
1.2459 + nsRect rowRect(0,0,0,height);
1.2460 + nsMargin rowMargin;
1.2461 + rowContext->StyleMargin()->GetMargin(rowMargin);
1.2462 + rowRect.Inflate(rowMargin);
1.2463 + height = rowRect.height;
1.2464 + return height;
1.2465 + }
1.2466 + }
1.2467 +
1.2468 + return nsPresContext::CSSPixelsToAppUnits(18); // As good a default as any.
1.2469 +}
1.2470 +
1.2471 +int32_t nsTreeBodyFrame::GetIndentation()
1.2472 +{
1.2473 + // Look up the correct indentation. It is equal to the specified indentation width.
1.2474 + mScratchArray.Clear();
1.2475 + nsStyleContext* indentContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreeindentation);
1.2476 + if (indentContext) {
1.2477 + const nsStylePosition* myPosition = indentContext->StylePosition();
1.2478 + if (myPosition->mWidth.GetUnit() == eStyleUnit_Coord) {
1.2479 + nscoord val = myPosition->mWidth.GetCoordValue();
1.2480 + return val;
1.2481 + }
1.2482 + }
1.2483 +
1.2484 + return nsPresContext::CSSPixelsToAppUnits(16); // As good a default as any.
1.2485 +}
1.2486 +
1.2487 +void nsTreeBodyFrame::CalcInnerBox()
1.2488 +{
1.2489 + mInnerBox.SetRect(0, 0, mRect.width, mRect.height);
1.2490 + AdjustForBorderPadding(mStyleContext, mInnerBox);
1.2491 +}
1.2492 +
1.2493 +nscoord
1.2494 +nsTreeBodyFrame::CalcHorzWidth(const ScrollParts& aParts)
1.2495 +{
1.2496 + // Compute the adjustment to the last column. This varies depending on the
1.2497 + // visibility of the columnpicker and the scrollbar.
1.2498 + if (aParts.mColumnsFrame)
1.2499 + mAdjustWidth = mRect.width - aParts.mColumnsFrame->GetRect().width;
1.2500 + else
1.2501 + mAdjustWidth = 0;
1.2502 +
1.2503 + nscoord width = 0;
1.2504 +
1.2505 + // We calculate this from the scrollable frame, so that it
1.2506 + // properly covers all contingencies of what could be
1.2507 + // scrollable (columns, body, etc...)
1.2508 +
1.2509 + if (aParts.mColumnsScrollFrame) {
1.2510 + width = aParts.mColumnsScrollFrame->GetScrollRange().width +
1.2511 + aParts.mColumnsScrollFrame->GetScrollPortRect().width;
1.2512 + }
1.2513 +
1.2514 + // If no horz scrolling periphery is present, then just return our width
1.2515 + if (width == 0)
1.2516 + width = mRect.width;
1.2517 +
1.2518 + return width;
1.2519 +}
1.2520 +
1.2521 +nsresult
1.2522 +nsTreeBodyFrame::GetCursor(const nsPoint& aPoint,
1.2523 + nsIFrame::Cursor& aCursor)
1.2524 +{
1.2525 + // Check the GetScriptHandlingObject so we don't end up running code when
1.2526 + // the document is a zombie.
1.2527 + bool dummy;
1.2528 + if (mView && GetContent()->GetCurrentDoc()->GetScriptHandlingObject(dummy)) {
1.2529 + int32_t row;
1.2530 + nsTreeColumn* col;
1.2531 + nsIAtom* child;
1.2532 + GetCellAt(aPoint.x, aPoint.y, &row, &col, &child);
1.2533 +
1.2534 + if (child) {
1.2535 + // Our scratch array is already prefilled.
1.2536 + nsStyleContext* childContext = GetPseudoStyleContext(child);
1.2537 +
1.2538 + FillCursorInformationFromStyle(childContext->StyleUserInterface(),
1.2539 + aCursor);
1.2540 + if (aCursor.mCursor == NS_STYLE_CURSOR_AUTO)
1.2541 + aCursor.mCursor = NS_STYLE_CURSOR_DEFAULT;
1.2542 +
1.2543 + return NS_OK;
1.2544 + }
1.2545 + }
1.2546 +
1.2547 + return nsLeafBoxFrame::GetCursor(aPoint, aCursor);
1.2548 +}
1.2549 +
1.2550 +static uint32_t GetDropEffect(WidgetGUIEvent* aEvent)
1.2551 +{
1.2552 + NS_ASSERTION(aEvent->eventStructType == NS_DRAG_EVENT, "wrong event type");
1.2553 + WidgetDragEvent* dragEvent = aEvent->AsDragEvent();
1.2554 + nsContentUtils::SetDataTransferInEvent(dragEvent);
1.2555 +
1.2556 + uint32_t action = 0;
1.2557 + if (dragEvent->dataTransfer)
1.2558 + dragEvent->dataTransfer->GetDropEffectInt(&action);
1.2559 + return action;
1.2560 +}
1.2561 +
1.2562 +nsresult
1.2563 +nsTreeBodyFrame::HandleEvent(nsPresContext* aPresContext,
1.2564 + WidgetGUIEvent* aEvent,
1.2565 + nsEventStatus* aEventStatus)
1.2566 +{
1.2567 + if (aEvent->message == NS_MOUSE_ENTER_SYNTH || aEvent->message == NS_MOUSE_MOVE) {
1.2568 + nsPoint pt = nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, this);
1.2569 + int32_t xTwips = pt.x - mInnerBox.x;
1.2570 + int32_t yTwips = pt.y - mInnerBox.y;
1.2571 + int32_t newrow = GetRowAt(xTwips, yTwips);
1.2572 + if (mMouseOverRow != newrow) {
1.2573 + // redraw the old and the new row
1.2574 + if (mMouseOverRow != -1)
1.2575 + InvalidateRow(mMouseOverRow);
1.2576 + mMouseOverRow = newrow;
1.2577 + if (mMouseOverRow != -1)
1.2578 + InvalidateRow(mMouseOverRow);
1.2579 + }
1.2580 + }
1.2581 + else if (aEvent->message == NS_MOUSE_EXIT_SYNTH) {
1.2582 + if (mMouseOverRow != -1) {
1.2583 + InvalidateRow(mMouseOverRow);
1.2584 + mMouseOverRow = -1;
1.2585 + }
1.2586 + }
1.2587 + else if (aEvent->message == NS_DRAGDROP_ENTER) {
1.2588 + if (!mSlots)
1.2589 + mSlots = new Slots();
1.2590 +
1.2591 + // Cache several things we'll need throughout the course of our work. These
1.2592 + // will all get released on a drag exit.
1.2593 +
1.2594 + if (mSlots->mTimer) {
1.2595 + mSlots->mTimer->Cancel();
1.2596 + mSlots->mTimer = nullptr;
1.2597 + }
1.2598 +
1.2599 + // Cache the drag session.
1.2600 + mSlots->mIsDragging = true;
1.2601 + mSlots->mDropRow = -1;
1.2602 + mSlots->mDropOrient = -1;
1.2603 + mSlots->mDragAction = GetDropEffect(aEvent);
1.2604 + }
1.2605 + else if (aEvent->message == NS_DRAGDROP_OVER) {
1.2606 + // The mouse is hovering over this tree. If we determine things are
1.2607 + // different from the last time, invalidate the drop feedback at the old
1.2608 + // position, query the view to see if the current location is droppable,
1.2609 + // and then invalidate the drop feedback at the new location if it is.
1.2610 + // The mouse may or may not have changed position from the last time
1.2611 + // we were called, so optimize out a lot of the extra notifications by
1.2612 + // checking if anything changed first. For drop feedback we use drop,
1.2613 + // dropBefore and dropAfter property.
1.2614 +
1.2615 + if (!mView || !mSlots)
1.2616 + return NS_OK;
1.2617 +
1.2618 + // Save last values, we will need them.
1.2619 + int32_t lastDropRow = mSlots->mDropRow;
1.2620 + int16_t lastDropOrient = mSlots->mDropOrient;
1.2621 +#ifndef XP_MACOSX
1.2622 + int16_t lastScrollLines = mSlots->mScrollLines;
1.2623 +#endif
1.2624 +
1.2625 + // Find out the current drag action
1.2626 + uint32_t lastDragAction = mSlots->mDragAction;
1.2627 + mSlots->mDragAction = GetDropEffect(aEvent);
1.2628 +
1.2629 + // Compute the row mouse is over and the above/below/on state.
1.2630 + // Below we'll use this to see if anything changed.
1.2631 + // Also check if we want to auto-scroll.
1.2632 + ComputeDropPosition(aEvent, &mSlots->mDropRow, &mSlots->mDropOrient, &mSlots->mScrollLines);
1.2633 +
1.2634 + // While we're here, handle tracking of scrolling during a drag.
1.2635 + if (mSlots->mScrollLines) {
1.2636 + if (mSlots->mDropAllowed) {
1.2637 + // Invalidate primary cell at old location.
1.2638 + mSlots->mDropAllowed = false;
1.2639 + InvalidateDropFeedback(lastDropRow, lastDropOrient);
1.2640 + }
1.2641 +#ifdef XP_MACOSX
1.2642 + ScrollByLines(mSlots->mScrollLines);
1.2643 +#else
1.2644 + if (!lastScrollLines) {
1.2645 + // Cancel any previously initialized timer.
1.2646 + if (mSlots->mTimer) {
1.2647 + mSlots->mTimer->Cancel();
1.2648 + mSlots->mTimer = nullptr;
1.2649 + }
1.2650 +
1.2651 + // Set a timer to trigger the tree scrolling.
1.2652 + CreateTimer(LookAndFeel::eIntID_TreeLazyScrollDelay,
1.2653 + LazyScrollCallback, nsITimer::TYPE_ONE_SHOT,
1.2654 + getter_AddRefs(mSlots->mTimer));
1.2655 + }
1.2656 +#endif
1.2657 + // Bail out to prevent spring loaded timer and feedback line settings.
1.2658 + return NS_OK;
1.2659 + }
1.2660 +
1.2661 + // If changed from last time, invalidate primary cell at the old location and if allowed,
1.2662 + // invalidate primary cell at the new location. If nothing changed, just bail.
1.2663 + if (mSlots->mDropRow != lastDropRow ||
1.2664 + mSlots->mDropOrient != lastDropOrient ||
1.2665 + mSlots->mDragAction != lastDragAction) {
1.2666 +
1.2667 + // Invalidate row at the old location.
1.2668 + if (mSlots->mDropAllowed) {
1.2669 + mSlots->mDropAllowed = false;
1.2670 + InvalidateDropFeedback(lastDropRow, lastDropOrient);
1.2671 + }
1.2672 +
1.2673 + if (mSlots->mTimer) {
1.2674 + // Timer is active but for a different row than the current one, kill it.
1.2675 + mSlots->mTimer->Cancel();
1.2676 + mSlots->mTimer = nullptr;
1.2677 + }
1.2678 +
1.2679 + if (mSlots->mDropRow >= 0) {
1.2680 + if (!mSlots->mTimer && mSlots->mDropOrient == nsITreeView::DROP_ON) {
1.2681 + // Either there wasn't a timer running or it was just killed above.
1.2682 + // If over a folder, start up a timer to open the folder.
1.2683 + bool isContainer = false;
1.2684 + mView->IsContainer(mSlots->mDropRow, &isContainer);
1.2685 + if (isContainer) {
1.2686 + bool isOpen = false;
1.2687 + mView->IsContainerOpen(mSlots->mDropRow, &isOpen);
1.2688 + if (!isOpen) {
1.2689 + // This node isn't expanded, set a timer to expand it.
1.2690 + CreateTimer(LookAndFeel::eIntID_TreeOpenDelay,
1.2691 + OpenCallback, nsITimer::TYPE_ONE_SHOT,
1.2692 + getter_AddRefs(mSlots->mTimer));
1.2693 + }
1.2694 + }
1.2695 + }
1.2696 +
1.2697 + // The dataTransfer was initialized by the call to GetDropEffect above.
1.2698 + bool canDropAtNewLocation = false;
1.2699 + mView->CanDrop(mSlots->mDropRow, mSlots->mDropOrient,
1.2700 + aEvent->AsDragEvent()->dataTransfer,
1.2701 + &canDropAtNewLocation);
1.2702 +
1.2703 + if (canDropAtNewLocation) {
1.2704 + // Invalidate row at the new location.
1.2705 + mSlots->mDropAllowed = canDropAtNewLocation;
1.2706 + InvalidateDropFeedback(mSlots->mDropRow, mSlots->mDropOrient);
1.2707 + }
1.2708 + }
1.2709 + }
1.2710 +
1.2711 + // Indicate that the drop is allowed by preventing the default behaviour.
1.2712 + if (mSlots->mDropAllowed)
1.2713 + *aEventStatus = nsEventStatus_eConsumeNoDefault;
1.2714 + }
1.2715 + else if (aEvent->message == NS_DRAGDROP_DROP) {
1.2716 + // this event was meant for another frame, so ignore it
1.2717 + if (!mSlots)
1.2718 + return NS_OK;
1.2719 +
1.2720 + // Tell the view where the drop happened.
1.2721 +
1.2722 + // Remove the drop folder and all its parents from the array.
1.2723 + int32_t parentIndex;
1.2724 + nsresult rv = mView->GetParentIndex(mSlots->mDropRow, &parentIndex);
1.2725 + while (NS_SUCCEEDED(rv) && parentIndex >= 0) {
1.2726 + mSlots->mArray.RemoveElement(parentIndex);
1.2727 + rv = mView->GetParentIndex(parentIndex, &parentIndex);
1.2728 + }
1.2729 +
1.2730 + NS_ASSERTION(aEvent->eventStructType == NS_DRAG_EVENT, "wrong event type");
1.2731 + WidgetDragEvent* dragEvent = aEvent->AsDragEvent();
1.2732 + nsContentUtils::SetDataTransferInEvent(dragEvent);
1.2733 +
1.2734 + mView->Drop(mSlots->mDropRow, mSlots->mDropOrient, dragEvent->dataTransfer);
1.2735 + mSlots->mDropRow = -1;
1.2736 + mSlots->mDropOrient = -1;
1.2737 + mSlots->mIsDragging = false;
1.2738 + *aEventStatus = nsEventStatus_eConsumeNoDefault; // already handled the drop
1.2739 + }
1.2740 + else if (aEvent->message == NS_DRAGDROP_EXIT) {
1.2741 + // this event was meant for another frame, so ignore it
1.2742 + if (!mSlots)
1.2743 + return NS_OK;
1.2744 +
1.2745 + // Clear out all our tracking vars.
1.2746 +
1.2747 + if (mSlots->mDropAllowed) {
1.2748 + mSlots->mDropAllowed = false;
1.2749 + InvalidateDropFeedback(mSlots->mDropRow, mSlots->mDropOrient);
1.2750 + }
1.2751 + else
1.2752 + mSlots->mDropAllowed = false;
1.2753 + mSlots->mIsDragging = false;
1.2754 + mSlots->mScrollLines = 0;
1.2755 + // If a drop is occuring, the exit event will fire just before the drop
1.2756 + // event, so don't reset mDropRow or mDropOrient as these fields are used
1.2757 + // by the drop event.
1.2758 + if (mSlots->mTimer) {
1.2759 + mSlots->mTimer->Cancel();
1.2760 + mSlots->mTimer = nullptr;
1.2761 + }
1.2762 +
1.2763 + if (!mSlots->mArray.IsEmpty()) {
1.2764 + // Close all spring loaded folders except the drop folder.
1.2765 + CreateTimer(LookAndFeel::eIntID_TreeCloseDelay,
1.2766 + CloseCallback, nsITimer::TYPE_ONE_SHOT,
1.2767 + getter_AddRefs(mSlots->mTimer));
1.2768 + }
1.2769 + }
1.2770 +
1.2771 + return NS_OK;
1.2772 +}
1.2773 +
1.2774 +static nsLineStyle
1.2775 +ConvertBorderStyleToLineStyle(uint8_t aBorderStyle)
1.2776 +{
1.2777 + switch (aBorderStyle) {
1.2778 + case NS_STYLE_BORDER_STYLE_DOTTED:
1.2779 + return nsLineStyle_kDotted;
1.2780 + case NS_STYLE_BORDER_STYLE_DASHED:
1.2781 + return nsLineStyle_kDashed;
1.2782 + default:
1.2783 + return nsLineStyle_kSolid;
1.2784 + }
1.2785 +}
1.2786 +
1.2787 +static void
1.2788 +PaintTreeBody(nsIFrame* aFrame, nsRenderingContext* aCtx,
1.2789 + const nsRect& aDirtyRect, nsPoint aPt)
1.2790 +{
1.2791 + static_cast<nsTreeBodyFrame*>(aFrame)->PaintTreeBody(*aCtx, aDirtyRect, aPt);
1.2792 +}
1.2793 +
1.2794 +// Painting routines
1.2795 +void
1.2796 +nsTreeBodyFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
1.2797 + const nsRect& aDirtyRect,
1.2798 + const nsDisplayListSet& aLists)
1.2799 +{
1.2800 + // REVIEW: why did we paint if we were collapsed? that makes no sense!
1.2801 + if (!IsVisibleForPainting(aBuilder))
1.2802 + return; // We're invisible. Don't paint.
1.2803 +
1.2804 + // Handles painting our background, border, and outline.
1.2805 + nsLeafBoxFrame::BuildDisplayList(aBuilder, aDirtyRect, aLists);
1.2806 +
1.2807 + // Bail out now if there's no view or we can't run script because the
1.2808 + // document is a zombie
1.2809 + if (!mView || !GetContent()->GetCurrentDoc()->GetWindow())
1.2810 + return;
1.2811 +
1.2812 + aLists.Content()->AppendNewToTop(new (aBuilder)
1.2813 + nsDisplayGeneric(aBuilder, this, ::PaintTreeBody, "XULTreeBody",
1.2814 + nsDisplayItem::TYPE_XUL_TREE_BODY));
1.2815 +}
1.2816 +
1.2817 +void
1.2818 +nsTreeBodyFrame::PaintTreeBody(nsRenderingContext& aRenderingContext,
1.2819 + const nsRect& aDirtyRect, nsPoint aPt)
1.2820 +{
1.2821 + // Update our available height and our page count.
1.2822 + CalcInnerBox();
1.2823 + aRenderingContext.PushState();
1.2824 + aRenderingContext.IntersectClip(mInnerBox + aPt);
1.2825 + int32_t oldPageCount = mPageLength;
1.2826 + if (!mHasFixedRowCount)
1.2827 + mPageLength = mInnerBox.height/mRowHeight;
1.2828 +
1.2829 + if (oldPageCount != mPageLength || mHorzWidth != CalcHorzWidth(GetScrollParts())) {
1.2830 + // Schedule a ResizeReflow that will update our info properly.
1.2831 + PresContext()->PresShell()->
1.2832 + FrameNeedsReflow(this, nsIPresShell::eResize, NS_FRAME_IS_DIRTY);
1.2833 + }
1.2834 +#ifdef DEBUG
1.2835 + int32_t rowCount = mRowCount;
1.2836 + mView->GetRowCount(&rowCount);
1.2837 + NS_WARN_IF_FALSE(mRowCount == rowCount, "row count changed unexpectedly");
1.2838 +#endif
1.2839 +
1.2840 + // Loop through our columns and paint them (e.g., for sorting). This is only
1.2841 + // relevant when painting backgrounds, since columns contain no content. Content
1.2842 + // is contained in the rows.
1.2843 + for (nsTreeColumn* currCol = mColumns->GetFirstColumn(); currCol;
1.2844 + currCol = currCol->GetNext()) {
1.2845 + nsRect colRect;
1.2846 + nsresult rv = currCol->GetRect(this, mInnerBox.y, mInnerBox.height,
1.2847 + &colRect);
1.2848 + // Don't paint hidden columns.
1.2849 + if (NS_FAILED(rv) || colRect.width == 0) continue;
1.2850 +
1.2851 + if (OffsetForHorzScroll(colRect, false)) {
1.2852 + nsRect dirtyRect;
1.2853 + colRect += aPt;
1.2854 + if (dirtyRect.IntersectRect(aDirtyRect, colRect)) {
1.2855 + PaintColumn(currCol, colRect, PresContext(), aRenderingContext, aDirtyRect);
1.2856 + }
1.2857 + }
1.2858 + }
1.2859 + // Loop through our on-screen rows.
1.2860 + for (int32_t i = mTopRowIndex; i < mRowCount && i <= mTopRowIndex+mPageLength; i++) {
1.2861 + nsRect rowRect(mInnerBox.x, mInnerBox.y+mRowHeight*(i-mTopRowIndex), mInnerBox.width, mRowHeight);
1.2862 + nsRect dirtyRect;
1.2863 + if (dirtyRect.IntersectRect(aDirtyRect, rowRect + aPt) &&
1.2864 + rowRect.y < (mInnerBox.y+mInnerBox.height)) {
1.2865 + PaintRow(i, rowRect + aPt, PresContext(), aRenderingContext, aDirtyRect, aPt);
1.2866 + }
1.2867 + }
1.2868 +
1.2869 + if (mSlots && mSlots->mDropAllowed && (mSlots->mDropOrient == nsITreeView::DROP_BEFORE ||
1.2870 + mSlots->mDropOrient == nsITreeView::DROP_AFTER)) {
1.2871 + nscoord yPos = mInnerBox.y + mRowHeight * (mSlots->mDropRow - mTopRowIndex) - mRowHeight / 2;
1.2872 + nsRect feedbackRect(mInnerBox.x, yPos, mInnerBox.width, mRowHeight);
1.2873 + if (mSlots->mDropOrient == nsITreeView::DROP_AFTER)
1.2874 + feedbackRect.y += mRowHeight;
1.2875 +
1.2876 + nsRect dirtyRect;
1.2877 + feedbackRect += aPt;
1.2878 + if (dirtyRect.IntersectRect(aDirtyRect, feedbackRect)) {
1.2879 + PaintDropFeedback(feedbackRect, PresContext(), aRenderingContext, aDirtyRect, aPt);
1.2880 + }
1.2881 + }
1.2882 + aRenderingContext.PopState();
1.2883 +}
1.2884 +
1.2885 +
1.2886 +
1.2887 +void
1.2888 +nsTreeBodyFrame::PaintColumn(nsTreeColumn* aColumn,
1.2889 + const nsRect& aColumnRect,
1.2890 + nsPresContext* aPresContext,
1.2891 + nsRenderingContext& aRenderingContext,
1.2892 + const nsRect& aDirtyRect)
1.2893 +{
1.2894 + NS_PRECONDITION(aColumn && aColumn->GetFrame(), "invalid column passed");
1.2895 +
1.2896 + // Now obtain the properties for our cell.
1.2897 + PrefillPropertyArray(-1, aColumn);
1.2898 + nsAutoString properties;
1.2899 + mView->GetColumnProperties(aColumn, properties);
1.2900 + nsTreeUtils::TokenizeProperties(properties, mScratchArray);
1.2901 +
1.2902 + // Resolve style for the column. It contains all the info we need to lay ourselves
1.2903 + // out and to paint.
1.2904 + nsStyleContext* colContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreecolumn);
1.2905 +
1.2906 + // Obtain the margins for the cell and then deflate our rect by that
1.2907 + // amount. The cell is assumed to be contained within the deflated rect.
1.2908 + nsRect colRect(aColumnRect);
1.2909 + nsMargin colMargin;
1.2910 + colContext->StyleMargin()->GetMargin(colMargin);
1.2911 + colRect.Deflate(colMargin);
1.2912 +
1.2913 + PaintBackgroundLayer(colContext, aPresContext, aRenderingContext, colRect, aDirtyRect);
1.2914 +}
1.2915 +
1.2916 +void
1.2917 +nsTreeBodyFrame::PaintRow(int32_t aRowIndex,
1.2918 + const nsRect& aRowRect,
1.2919 + nsPresContext* aPresContext,
1.2920 + nsRenderingContext& aRenderingContext,
1.2921 + const nsRect& aDirtyRect,
1.2922 + nsPoint aPt)
1.2923 +{
1.2924 + // We have been given a rect for our row. We treat this row like a full-blown
1.2925 + // frame, meaning that it can have borders, margins, padding, and a background.
1.2926 +
1.2927 + // Without a view, we have no data. Check for this up front.
1.2928 + if (!mView)
1.2929 + return;
1.2930 +
1.2931 + nsresult rv;
1.2932 +
1.2933 + // Now obtain the properties for our row.
1.2934 + // XXX Automatically fill in the following props: open, closed, container, leaf, selected, focused
1.2935 + PrefillPropertyArray(aRowIndex, nullptr);
1.2936 +
1.2937 + nsAutoString properties;
1.2938 + mView->GetRowProperties(aRowIndex, properties);
1.2939 + nsTreeUtils::TokenizeProperties(properties, mScratchArray);
1.2940 +
1.2941 + // Resolve style for the row. It contains all the info we need to lay ourselves
1.2942 + // out and to paint.
1.2943 + nsStyleContext* rowContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreerow);
1.2944 +
1.2945 + // Obtain the margins for the row and then deflate our rect by that
1.2946 + // amount. The row is assumed to be contained within the deflated rect.
1.2947 + nsRect rowRect(aRowRect);
1.2948 + nsMargin rowMargin;
1.2949 + rowContext->StyleMargin()->GetMargin(rowMargin);
1.2950 + rowRect.Deflate(rowMargin);
1.2951 +
1.2952 + // Paint our borders and background for our row rect.
1.2953 + // If a -moz-appearance is provided, use theme drawing only if the current row
1.2954 + // is not selected (since we draw the selection as part of drawing the background).
1.2955 + bool useTheme = false;
1.2956 + nsITheme *theme = nullptr;
1.2957 + const nsStyleDisplay* displayData = rowContext->StyleDisplay();
1.2958 + if (displayData->mAppearance) {
1.2959 + theme = aPresContext->GetTheme();
1.2960 + if (theme && theme->ThemeSupportsWidget(aPresContext, nullptr, displayData->mAppearance))
1.2961 + useTheme = true;
1.2962 + }
1.2963 + bool isSelected = false;
1.2964 + nsCOMPtr<nsITreeSelection> selection;
1.2965 + mView->GetSelection(getter_AddRefs(selection));
1.2966 + if (selection)
1.2967 + selection->IsSelected(aRowIndex, &isSelected);
1.2968 + if (useTheme && !isSelected) {
1.2969 + nsRect dirty;
1.2970 + dirty.IntersectRect(rowRect, aDirtyRect);
1.2971 + theme->DrawWidgetBackground(&aRenderingContext, this,
1.2972 + displayData->mAppearance, rowRect, dirty);
1.2973 + } else {
1.2974 + PaintBackgroundLayer(rowContext, aPresContext, aRenderingContext, rowRect, aDirtyRect);
1.2975 + }
1.2976 +
1.2977 + // Adjust the rect for its border and padding.
1.2978 + nsRect originalRowRect = rowRect;
1.2979 + AdjustForBorderPadding(rowContext, rowRect);
1.2980 +
1.2981 + bool isSeparator = false;
1.2982 + mView->IsSeparator(aRowIndex, &isSeparator);
1.2983 + if (isSeparator) {
1.2984 + // The row is a separator.
1.2985 +
1.2986 + nscoord primaryX = rowRect.x;
1.2987 + nsTreeColumn* primaryCol = mColumns->GetPrimaryColumn();
1.2988 + if (primaryCol) {
1.2989 + // Paint the primary cell.
1.2990 + nsRect cellRect;
1.2991 + rv = primaryCol->GetRect(this, rowRect.y, rowRect.height, &cellRect);
1.2992 + if (NS_FAILED(rv)) {
1.2993 + NS_NOTREACHED("primary column is invalid");
1.2994 + return;
1.2995 + }
1.2996 +
1.2997 + if (OffsetForHorzScroll(cellRect, false)) {
1.2998 + cellRect.x += aPt.x;
1.2999 + nsRect dirtyRect;
1.3000 + nsRect checkRect(cellRect.x, originalRowRect.y,
1.3001 + cellRect.width, originalRowRect.height);
1.3002 + if (dirtyRect.IntersectRect(aDirtyRect, checkRect))
1.3003 + PaintCell(aRowIndex, primaryCol, cellRect, aPresContext,
1.3004 + aRenderingContext, aDirtyRect, primaryX, aPt);
1.3005 + }
1.3006 +
1.3007 + // Paint the left side of the separator.
1.3008 + nscoord currX;
1.3009 + nsTreeColumn* previousCol = primaryCol->GetPrevious();
1.3010 + if (previousCol) {
1.3011 + nsRect prevColRect;
1.3012 + rv = previousCol->GetRect(this, 0, 0, &prevColRect);
1.3013 + if (NS_SUCCEEDED(rv)) {
1.3014 + currX = (prevColRect.x - mHorzPosition) + prevColRect.width + aPt.x;
1.3015 + } else {
1.3016 + NS_NOTREACHED("The column before the primary column is invalid");
1.3017 + currX = rowRect.x;
1.3018 + }
1.3019 + } else {
1.3020 + currX = rowRect.x;
1.3021 + }
1.3022 +
1.3023 + int32_t level;
1.3024 + mView->GetLevel(aRowIndex, &level);
1.3025 + if (level == 0)
1.3026 + currX += mIndentation;
1.3027 +
1.3028 + if (currX > rowRect.x) {
1.3029 + nsRect separatorRect(rowRect);
1.3030 + separatorRect.width -= rowRect.x + rowRect.width - currX;
1.3031 + PaintSeparator(aRowIndex, separatorRect, aPresContext, aRenderingContext, aDirtyRect);
1.3032 + }
1.3033 + }
1.3034 +
1.3035 + // Paint the right side (whole) separator.
1.3036 + nsRect separatorRect(rowRect);
1.3037 + if (primaryX > rowRect.x) {
1.3038 + separatorRect.width -= primaryX - rowRect.x;
1.3039 + separatorRect.x += primaryX - rowRect.x;
1.3040 + }
1.3041 + PaintSeparator(aRowIndex, separatorRect, aPresContext, aRenderingContext, aDirtyRect);
1.3042 + }
1.3043 + else {
1.3044 + // Now loop over our cells. Only paint a cell if it intersects with our dirty rect.
1.3045 + for (nsTreeColumn* currCol = mColumns->GetFirstColumn(); currCol;
1.3046 + currCol = currCol->GetNext()) {
1.3047 + nsRect cellRect;
1.3048 + rv = currCol->GetRect(this, rowRect.y, rowRect.height, &cellRect);
1.3049 + // Don't paint cells in hidden columns.
1.3050 + if (NS_FAILED(rv) || cellRect.width == 0)
1.3051 + continue;
1.3052 +
1.3053 + if (OffsetForHorzScroll(cellRect, false)) {
1.3054 + cellRect.x += aPt.x;
1.3055 +
1.3056 + // for primary columns, use the row's vertical size so that the
1.3057 + // lines get drawn properly
1.3058 + nsRect checkRect = cellRect;
1.3059 + if (currCol->IsPrimary())
1.3060 + checkRect = nsRect(cellRect.x, originalRowRect.y,
1.3061 + cellRect.width, originalRowRect.height);
1.3062 +
1.3063 + nsRect dirtyRect;
1.3064 + nscoord dummy;
1.3065 + if (dirtyRect.IntersectRect(aDirtyRect, checkRect))
1.3066 + PaintCell(aRowIndex, currCol, cellRect, aPresContext,
1.3067 + aRenderingContext, aDirtyRect, dummy, aPt);
1.3068 + }
1.3069 + }
1.3070 + }
1.3071 +}
1.3072 +
1.3073 +void
1.3074 +nsTreeBodyFrame::PaintSeparator(int32_t aRowIndex,
1.3075 + const nsRect& aSeparatorRect,
1.3076 + nsPresContext* aPresContext,
1.3077 + nsRenderingContext& aRenderingContext,
1.3078 + const nsRect& aDirtyRect)
1.3079 +{
1.3080 + // Resolve style for the separator.
1.3081 + nsStyleContext* separatorContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreeseparator);
1.3082 + bool useTheme = false;
1.3083 + nsITheme *theme = nullptr;
1.3084 + const nsStyleDisplay* displayData = separatorContext->StyleDisplay();
1.3085 + if ( displayData->mAppearance ) {
1.3086 + theme = aPresContext->GetTheme();
1.3087 + if (theme && theme->ThemeSupportsWidget(aPresContext, nullptr, displayData->mAppearance))
1.3088 + useTheme = true;
1.3089 + }
1.3090 +
1.3091 + // use -moz-appearance if provided.
1.3092 + if (useTheme) {
1.3093 + nsRect dirty;
1.3094 + dirty.IntersectRect(aSeparatorRect, aDirtyRect);
1.3095 + theme->DrawWidgetBackground(&aRenderingContext, this,
1.3096 + displayData->mAppearance, aSeparatorRect, dirty);
1.3097 + }
1.3098 + else {
1.3099 + const nsStylePosition* stylePosition = separatorContext->StylePosition();
1.3100 +
1.3101 + // Obtain the height for the separator or use the default value.
1.3102 + nscoord height;
1.3103 + if (stylePosition->mHeight.GetUnit() == eStyleUnit_Coord)
1.3104 + height = stylePosition->mHeight.GetCoordValue();
1.3105 + else {
1.3106 + // Use default height 2px.
1.3107 + height = nsPresContext::CSSPixelsToAppUnits(2);
1.3108 + }
1.3109 +
1.3110 + // Obtain the margins for the separator and then deflate our rect by that
1.3111 + // amount. The separator is assumed to be contained within the deflated rect.
1.3112 + nsRect separatorRect(aSeparatorRect.x, aSeparatorRect.y, aSeparatorRect.width, height);
1.3113 + nsMargin separatorMargin;
1.3114 + separatorContext->StyleMargin()->GetMargin(separatorMargin);
1.3115 + separatorRect.Deflate(separatorMargin);
1.3116 +
1.3117 + // Center the separator.
1.3118 + separatorRect.y += (aSeparatorRect.height - height) / 2;
1.3119 +
1.3120 + PaintBackgroundLayer(separatorContext, aPresContext, aRenderingContext, separatorRect, aDirtyRect);
1.3121 + }
1.3122 +}
1.3123 +
1.3124 +void
1.3125 +nsTreeBodyFrame::PaintCell(int32_t aRowIndex,
1.3126 + nsTreeColumn* aColumn,
1.3127 + const nsRect& aCellRect,
1.3128 + nsPresContext* aPresContext,
1.3129 + nsRenderingContext& aRenderingContext,
1.3130 + const nsRect& aDirtyRect,
1.3131 + nscoord& aCurrX,
1.3132 + nsPoint aPt)
1.3133 +{
1.3134 + NS_PRECONDITION(aColumn && aColumn->GetFrame(), "invalid column passed");
1.3135 +
1.3136 + // Now obtain the properties for our cell.
1.3137 + // XXX Automatically fill in the following props: open, closed, container, leaf, selected, focused, and the col ID.
1.3138 + PrefillPropertyArray(aRowIndex, aColumn);
1.3139 + nsAutoString properties;
1.3140 + mView->GetCellProperties(aRowIndex, aColumn, properties);
1.3141 + nsTreeUtils::TokenizeProperties(properties, mScratchArray);
1.3142 +
1.3143 + // Resolve style for the cell. It contains all the info we need to lay ourselves
1.3144 + // out and to paint.
1.3145 + nsStyleContext* cellContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreecell);
1.3146 +
1.3147 + bool isRTL = StyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL;
1.3148 +
1.3149 + // Obtain the margins for the cell and then deflate our rect by that
1.3150 + // amount. The cell is assumed to be contained within the deflated rect.
1.3151 + nsRect cellRect(aCellRect);
1.3152 + nsMargin cellMargin;
1.3153 + cellContext->StyleMargin()->GetMargin(cellMargin);
1.3154 + cellRect.Deflate(cellMargin);
1.3155 +
1.3156 + // Paint our borders and background for our row rect.
1.3157 + PaintBackgroundLayer(cellContext, aPresContext, aRenderingContext, cellRect, aDirtyRect);
1.3158 +
1.3159 + // Adjust the rect for its border and padding.
1.3160 + AdjustForBorderPadding(cellContext, cellRect);
1.3161 +
1.3162 + nscoord currX = cellRect.x;
1.3163 + nscoord remainingWidth = cellRect.width;
1.3164 +
1.3165 + // Now we paint the contents of the cells.
1.3166 + // Directionality of the tree determines the order in which we paint.
1.3167 + // NS_STYLE_DIRECTION_LTR means paint from left to right.
1.3168 + // NS_STYLE_DIRECTION_RTL means paint from right to left.
1.3169 +
1.3170 + if (aColumn->IsPrimary()) {
1.3171 + // If we're the primary column, we need to indent and paint the twisty and any connecting lines
1.3172 + // between siblings.
1.3173 +
1.3174 + int32_t level;
1.3175 + mView->GetLevel(aRowIndex, &level);
1.3176 +
1.3177 + if (!isRTL)
1.3178 + currX += mIndentation * level;
1.3179 + remainingWidth -= mIndentation * level;
1.3180 +
1.3181 + // Resolve the style to use for the connecting lines.
1.3182 + nsStyleContext* lineContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreeline);
1.3183 +
1.3184 + if (mIndentation && level &&
1.3185 + lineContext->StyleVisibility()->IsVisibleOrCollapsed()) {
1.3186 + // Paint the thread lines.
1.3187 +
1.3188 + // Get the size of the twisty. We don't want to paint the twisty
1.3189 + // before painting of connecting lines since it would paint lines over
1.3190 + // the twisty. But we need to leave a place for it.
1.3191 + nsStyleContext* twistyContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreetwisty);
1.3192 +
1.3193 + nsRect imageSize;
1.3194 + nsRect twistyRect(aCellRect);
1.3195 + GetTwistyRect(aRowIndex, aColumn, imageSize, twistyRect, aPresContext,
1.3196 + aRenderingContext, twistyContext);
1.3197 +
1.3198 + nsMargin twistyMargin;
1.3199 + twistyContext->StyleMargin()->GetMargin(twistyMargin);
1.3200 + twistyRect.Inflate(twistyMargin);
1.3201 +
1.3202 + aRenderingContext.PushState();
1.3203 +
1.3204 + const nsStyleBorder* borderStyle = lineContext->StyleBorder();
1.3205 + nscolor color;
1.3206 + bool foreground;
1.3207 + borderStyle->GetBorderColor(NS_SIDE_LEFT, color, foreground);
1.3208 + if (foreground) {
1.3209 + // GetBorderColor didn't touch color, thus grab it from the treeline context
1.3210 + color = lineContext->StyleColor()->mColor;
1.3211 + }
1.3212 + aRenderingContext.SetColor(color);
1.3213 + uint8_t style;
1.3214 + style = borderStyle->GetBorderStyle(NS_SIDE_LEFT);
1.3215 + aRenderingContext.SetLineStyle(ConvertBorderStyleToLineStyle(style));
1.3216 +
1.3217 + nscoord srcX = currX + twistyRect.width - mIndentation / 2;
1.3218 + nscoord lineY = (aRowIndex - mTopRowIndex) * mRowHeight + aPt.y;
1.3219 +
1.3220 + // Don't paint off our cell.
1.3221 + if (srcX <= cellRect.x + cellRect.width) {
1.3222 + nscoord destX = currX + twistyRect.width;
1.3223 + if (destX > cellRect.x + cellRect.width)
1.3224 + destX = cellRect.x + cellRect.width;
1.3225 + if (isRTL) {
1.3226 + srcX = currX + remainingWidth - (srcX - cellRect.x);
1.3227 + destX = currX + remainingWidth - (destX - cellRect.x);
1.3228 + }
1.3229 + aRenderingContext.DrawLine(srcX, lineY + mRowHeight / 2, destX, lineY + mRowHeight / 2);
1.3230 + }
1.3231 +
1.3232 + int32_t currentParent = aRowIndex;
1.3233 + for (int32_t i = level; i > 0; i--) {
1.3234 + if (srcX <= cellRect.x + cellRect.width) {
1.3235 + // Paint full vertical line only if we have next sibling.
1.3236 + bool hasNextSibling;
1.3237 + mView->HasNextSibling(currentParent, aRowIndex, &hasNextSibling);
1.3238 + if (hasNextSibling)
1.3239 + aRenderingContext.DrawLine(srcX, lineY, srcX, lineY + mRowHeight);
1.3240 + else if (i == level)
1.3241 + aRenderingContext.DrawLine(srcX, lineY, srcX, lineY + mRowHeight / 2);
1.3242 + }
1.3243 +
1.3244 + int32_t parent;
1.3245 + if (NS_FAILED(mView->GetParentIndex(currentParent, &parent)) || parent < 0)
1.3246 + break;
1.3247 + currentParent = parent;
1.3248 + srcX -= mIndentation;
1.3249 + }
1.3250 +
1.3251 + aRenderingContext.PopState();
1.3252 + }
1.3253 +
1.3254 + // Always leave space for the twisty.
1.3255 + nsRect twistyRect(currX, cellRect.y, remainingWidth, cellRect.height);
1.3256 + PaintTwisty(aRowIndex, aColumn, twistyRect, aPresContext, aRenderingContext, aDirtyRect,
1.3257 + remainingWidth, currX);
1.3258 + }
1.3259 +
1.3260 + // Now paint the icon for our cell.
1.3261 + nsRect iconRect(currX, cellRect.y, remainingWidth, cellRect.height);
1.3262 + nsRect dirtyRect;
1.3263 + if (dirtyRect.IntersectRect(aDirtyRect, iconRect))
1.3264 + PaintImage(aRowIndex, aColumn, iconRect, aPresContext, aRenderingContext, aDirtyRect,
1.3265 + remainingWidth, currX);
1.3266 +
1.3267 + // Now paint our element, but only if we aren't a cycler column.
1.3268 + // XXX until we have the ability to load images, allow the view to
1.3269 + // insert text into cycler columns...
1.3270 + if (!aColumn->IsCycler()) {
1.3271 + nsRect elementRect(currX, cellRect.y, remainingWidth, cellRect.height);
1.3272 + nsRect dirtyRect;
1.3273 + if (dirtyRect.IntersectRect(aDirtyRect, elementRect)) {
1.3274 + switch (aColumn->GetType()) {
1.3275 + case nsITreeColumn::TYPE_TEXT:
1.3276 + PaintText(aRowIndex, aColumn, elementRect, aPresContext, aRenderingContext, aDirtyRect, currX);
1.3277 + break;
1.3278 + case nsITreeColumn::TYPE_CHECKBOX:
1.3279 + PaintCheckbox(aRowIndex, aColumn, elementRect, aPresContext, aRenderingContext, aDirtyRect);
1.3280 + break;
1.3281 + case nsITreeColumn::TYPE_PROGRESSMETER:
1.3282 + int32_t state;
1.3283 + mView->GetProgressMode(aRowIndex, aColumn, &state);
1.3284 + switch (state) {
1.3285 + case nsITreeView::PROGRESS_NORMAL:
1.3286 + case nsITreeView::PROGRESS_UNDETERMINED:
1.3287 + PaintProgressMeter(aRowIndex, aColumn, elementRect, aPresContext, aRenderingContext, aDirtyRect);
1.3288 + break;
1.3289 + case nsITreeView::PROGRESS_NONE:
1.3290 + default:
1.3291 + PaintText(aRowIndex, aColumn, elementRect, aPresContext, aRenderingContext, aDirtyRect, currX);
1.3292 + break;
1.3293 + }
1.3294 + break;
1.3295 + }
1.3296 + }
1.3297 + }
1.3298 +
1.3299 + aCurrX = currX;
1.3300 +}
1.3301 +
1.3302 +void
1.3303 +nsTreeBodyFrame::PaintTwisty(int32_t aRowIndex,
1.3304 + nsTreeColumn* aColumn,
1.3305 + const nsRect& aTwistyRect,
1.3306 + nsPresContext* aPresContext,
1.3307 + nsRenderingContext& aRenderingContext,
1.3308 + const nsRect& aDirtyRect,
1.3309 + nscoord& aRemainingWidth,
1.3310 + nscoord& aCurrX)
1.3311 +{
1.3312 + NS_PRECONDITION(aColumn && aColumn->GetFrame(), "invalid column passed");
1.3313 +
1.3314 + bool isRTL = StyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL;
1.3315 + nscoord rightEdge = aCurrX + aRemainingWidth;
1.3316 + // Paint the twisty, but only if we are a non-empty container.
1.3317 + bool shouldPaint = false;
1.3318 + bool isContainer = false;
1.3319 + mView->IsContainer(aRowIndex, &isContainer);
1.3320 + if (isContainer) {
1.3321 + bool isContainerEmpty = false;
1.3322 + mView->IsContainerEmpty(aRowIndex, &isContainerEmpty);
1.3323 + if (!isContainerEmpty)
1.3324 + shouldPaint = true;
1.3325 + }
1.3326 +
1.3327 + // Resolve style for the twisty.
1.3328 + nsStyleContext* twistyContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreetwisty);
1.3329 +
1.3330 + // Obtain the margins for the twisty and then deflate our rect by that
1.3331 + // amount. The twisty is assumed to be contained within the deflated rect.
1.3332 + nsRect twistyRect(aTwistyRect);
1.3333 + nsMargin twistyMargin;
1.3334 + twistyContext->StyleMargin()->GetMargin(twistyMargin);
1.3335 + twistyRect.Deflate(twistyMargin);
1.3336 +
1.3337 + nsRect imageSize;
1.3338 + nsITheme* theme = GetTwistyRect(aRowIndex, aColumn, imageSize, twistyRect,
1.3339 + aPresContext, aRenderingContext, twistyContext);
1.3340 +
1.3341 + // Subtract out the remaining width. This is done even when we don't actually paint a twisty in
1.3342 + // this cell, so that cells in different rows still line up.
1.3343 + nsRect copyRect(twistyRect);
1.3344 + copyRect.Inflate(twistyMargin);
1.3345 + aRemainingWidth -= copyRect.width;
1.3346 + if (!isRTL)
1.3347 + aCurrX += copyRect.width;
1.3348 +
1.3349 + if (shouldPaint) {
1.3350 + // Paint our borders and background for our image rect.
1.3351 + PaintBackgroundLayer(twistyContext, aPresContext, aRenderingContext, twistyRect, aDirtyRect);
1.3352 +
1.3353 + if (theme) {
1.3354 + if (isRTL)
1.3355 + twistyRect.x = rightEdge - twistyRect.width;
1.3356 + // yeah, I know it says we're drawing a background, but a twisty is really a fg
1.3357 + // object since it doesn't have anything that gecko would want to draw over it. Besides,
1.3358 + // we have to prevent imagelib from drawing it.
1.3359 + nsRect dirty;
1.3360 + dirty.IntersectRect(twistyRect, aDirtyRect);
1.3361 + theme->DrawWidgetBackground(&aRenderingContext, this,
1.3362 + twistyContext->StyleDisplay()->mAppearance, twistyRect, dirty);
1.3363 + }
1.3364 + else {
1.3365 + // Time to paint the twisty.
1.3366 + // Adjust the rect for its border and padding.
1.3367 + nsMargin bp(0,0,0,0);
1.3368 + GetBorderPadding(twistyContext, bp);
1.3369 + twistyRect.Deflate(bp);
1.3370 + if (isRTL)
1.3371 + twistyRect.x = rightEdge - twistyRect.width;
1.3372 + imageSize.Deflate(bp);
1.3373 +
1.3374 + // Get the image for drawing.
1.3375 + nsCOMPtr<imgIContainer> image;
1.3376 + bool useImageRegion = true;
1.3377 + GetImage(aRowIndex, aColumn, true, twistyContext, useImageRegion, getter_AddRefs(image));
1.3378 + if (image) {
1.3379 + nsPoint pt = twistyRect.TopLeft();
1.3380 +
1.3381 + // Center the image. XXX Obey vertical-align style prop?
1.3382 + if (imageSize.height < twistyRect.height) {
1.3383 + pt.y += (twistyRect.height - imageSize.height)/2;
1.3384 + }
1.3385 +
1.3386 + // Paint the image.
1.3387 + nsLayoutUtils::DrawSingleUnscaledImage(&aRenderingContext, image,
1.3388 + GraphicsFilter::FILTER_NEAREST, pt, &aDirtyRect,
1.3389 + imgIContainer::FLAG_NONE, &imageSize);
1.3390 + }
1.3391 + }
1.3392 + }
1.3393 +}
1.3394 +
1.3395 +void
1.3396 +nsTreeBodyFrame::PaintImage(int32_t aRowIndex,
1.3397 + nsTreeColumn* aColumn,
1.3398 + const nsRect& aImageRect,
1.3399 + nsPresContext* aPresContext,
1.3400 + nsRenderingContext& aRenderingContext,
1.3401 + const nsRect& aDirtyRect,
1.3402 + nscoord& aRemainingWidth,
1.3403 + nscoord& aCurrX)
1.3404 +{
1.3405 + NS_PRECONDITION(aColumn && aColumn->GetFrame(), "invalid column passed");
1.3406 +
1.3407 + bool isRTL = StyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL;
1.3408 + nscoord rightEdge = aCurrX + aRemainingWidth;
1.3409 + // Resolve style for the image.
1.3410 + nsStyleContext* imageContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreeimage);
1.3411 +
1.3412 + // Obtain opacity value for the image.
1.3413 + float opacity = imageContext->StyleDisplay()->mOpacity;
1.3414 +
1.3415 + // Obtain the margins for the image and then deflate our rect by that
1.3416 + // amount. The image is assumed to be contained within the deflated rect.
1.3417 + nsRect imageRect(aImageRect);
1.3418 + nsMargin imageMargin;
1.3419 + imageContext->StyleMargin()->GetMargin(imageMargin);
1.3420 + imageRect.Deflate(imageMargin);
1.3421 +
1.3422 + // Get the image.
1.3423 + bool useImageRegion = true;
1.3424 + nsCOMPtr<imgIContainer> image;
1.3425 + GetImage(aRowIndex, aColumn, false, imageContext, useImageRegion, getter_AddRefs(image));
1.3426 +
1.3427 + // Get the image destination size.
1.3428 + nsSize imageDestSize = GetImageDestSize(imageContext, useImageRegion, image);
1.3429 + if (!imageDestSize.width || !imageDestSize.height)
1.3430 + return;
1.3431 +
1.3432 + // Get the borders and padding.
1.3433 + nsMargin bp(0,0,0,0);
1.3434 + GetBorderPadding(imageContext, bp);
1.3435 +
1.3436 + // destRect will be passed as the aDestRect argument in the DrawImage method.
1.3437 + // Start with the imageDestSize width and height.
1.3438 + nsRect destRect(0, 0, imageDestSize.width, imageDestSize.height);
1.3439 + // Inflate destRect for borders and padding so that we can compare/adjust
1.3440 + // with respect to imageRect.
1.3441 + destRect.Inflate(bp);
1.3442 +
1.3443 + // The destRect width and height have not been adjusted to fit within the
1.3444 + // cell width and height.
1.3445 + // We must adjust the width even if image is null, because the width is used
1.3446 + // to update the aRemainingWidth and aCurrX values.
1.3447 + // Since the height isn't used unless the image is not null, we will adjust
1.3448 + // the height inside the if (image) block below.
1.3449 +
1.3450 + if (destRect.width > imageRect.width) {
1.3451 + // The destRect is too wide to fit within the cell width.
1.3452 + // Adjust destRect width to fit within the cell width.
1.3453 + destRect.width = imageRect.width;
1.3454 + }
1.3455 + else {
1.3456 + // The cell is wider than the destRect.
1.3457 + // In a cycler column, the image is centered horizontally.
1.3458 + if (!aColumn->IsCycler()) {
1.3459 + // If this column is not a cycler, we won't center the image horizontally.
1.3460 + // We adjust the imageRect width so that the image is placed at the start
1.3461 + // of the cell.
1.3462 + imageRect.width = destRect.width;
1.3463 + }
1.3464 + }
1.3465 +
1.3466 + if (image) {
1.3467 + if (isRTL)
1.3468 + imageRect.x = rightEdge - imageRect.width;
1.3469 + // Paint our borders and background for our image rect
1.3470 + PaintBackgroundLayer(imageContext, aPresContext, aRenderingContext, imageRect, aDirtyRect);
1.3471 +
1.3472 + // The destRect x and y have not been set yet. Let's do that now.
1.3473 + // Initially, we use the imageRect x and y.
1.3474 + destRect.x = imageRect.x;
1.3475 + destRect.y = imageRect.y;
1.3476 +
1.3477 + if (destRect.width < imageRect.width) {
1.3478 + // The destRect width is smaller than the cell width.
1.3479 + // Center the image horizontally in the cell.
1.3480 + // Adjust the destRect x accordingly.
1.3481 + destRect.x += (imageRect.width - destRect.width)/2;
1.3482 + }
1.3483 +
1.3484 + // Now it's time to adjust the destRect height to fit within the cell height.
1.3485 + if (destRect.height > imageRect.height) {
1.3486 + // The destRect height is larger than the cell height.
1.3487 + // Adjust destRect height to fit within the cell height.
1.3488 + destRect.height = imageRect.height;
1.3489 + }
1.3490 + else if (destRect.height < imageRect.height) {
1.3491 + // The destRect height is smaller than the cell height.
1.3492 + // Center the image vertically in the cell.
1.3493 + // Adjust the destRect y accordingly.
1.3494 + destRect.y += (imageRect.height - destRect.height)/2;
1.3495 + }
1.3496 +
1.3497 + // It's almost time to paint the image.
1.3498 + // Deflate destRect for the border and padding.
1.3499 + destRect.Deflate(bp);
1.3500 +
1.3501 + // Get the image source rectangle - the rectangle containing the part of
1.3502 + // the image that we are going to display.
1.3503 + // sourceRect will be passed as the aSrcRect argument in the DrawImage method.
1.3504 + nsRect sourceRect = GetImageSourceRect(imageContext, useImageRegion, image);
1.3505 +
1.3506 + // Let's say that the image is 100 pixels tall and
1.3507 + // that the CSS has specified that the destination height should be 50
1.3508 + // pixels tall. Let's say that the cell height is only 20 pixels. So, in
1.3509 + // those 20 visible pixels, we want to see the top 20/50ths of the image.
1.3510 + // So, the sourceRect.height should be 100 * 20 / 50, which is 40 pixels.
1.3511 + // Essentially, we are scaling the image as dictated by the CSS destination
1.3512 + // height and width, and we are then clipping the scaled image by the cell
1.3513 + // width and height.
1.3514 + nsIntSize rawImageSize;
1.3515 + image->GetWidth(&rawImageSize.width);
1.3516 + image->GetHeight(&rawImageSize.height);
1.3517 + nsRect wholeImageDest =
1.3518 + nsLayoutUtils::GetWholeImageDestination(rawImageSize, sourceRect,
1.3519 + nsRect(destRect.TopLeft(), imageDestSize));
1.3520 +
1.3521 + gfxContext* ctx = aRenderingContext.ThebesContext();
1.3522 + if (opacity != 1.0f) {
1.3523 + ctx->PushGroup(gfxContentType::COLOR_ALPHA);
1.3524 + }
1.3525 +
1.3526 + nsLayoutUtils::DrawImage(&aRenderingContext, image,
1.3527 + nsLayoutUtils::GetGraphicsFilterForFrame(this),
1.3528 + wholeImageDest, destRect, destRect.TopLeft(), aDirtyRect,
1.3529 + imgIContainer::FLAG_NONE);
1.3530 +
1.3531 + if (opacity != 1.0f) {
1.3532 + ctx->PopGroupToSource();
1.3533 + ctx->Paint(opacity);
1.3534 + }
1.3535 + }
1.3536 +
1.3537 + // Update the aRemainingWidth and aCurrX values.
1.3538 + imageRect.Inflate(imageMargin);
1.3539 + aRemainingWidth -= imageRect.width;
1.3540 + if (!isRTL)
1.3541 + aCurrX += imageRect.width;
1.3542 +}
1.3543 +
1.3544 +void
1.3545 +nsTreeBodyFrame::PaintText(int32_t aRowIndex,
1.3546 + nsTreeColumn* aColumn,
1.3547 + const nsRect& aTextRect,
1.3548 + nsPresContext* aPresContext,
1.3549 + nsRenderingContext& aRenderingContext,
1.3550 + const nsRect& aDirtyRect,
1.3551 + nscoord& aCurrX)
1.3552 +{
1.3553 + NS_PRECONDITION(aColumn && aColumn->GetFrame(), "invalid column passed");
1.3554 +
1.3555 + bool isRTL = StyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL;
1.3556 +
1.3557 + // Now obtain the text for our cell.
1.3558 + nsAutoString text;
1.3559 + mView->GetCellText(aRowIndex, aColumn, text);
1.3560 + // We're going to paint this text so we need to ensure bidi is enabled if
1.3561 + // necessary
1.3562 + CheckTextForBidi(text);
1.3563 +
1.3564 + if (text.Length() == 0)
1.3565 + return; // Don't paint an empty string. XXX What about background/borders? Still paint?
1.3566 +
1.3567 + // Resolve style for the text. It contains all the info we need to lay ourselves
1.3568 + // out and to paint.
1.3569 + nsStyleContext* textContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreecelltext);
1.3570 +
1.3571 + // Obtain opacity value for the image.
1.3572 + float opacity = textContext->StyleDisplay()->mOpacity;
1.3573 +
1.3574 + // Obtain the margins for the text and then deflate our rect by that
1.3575 + // amount. The text is assumed to be contained within the deflated rect.
1.3576 + nsRect textRect(aTextRect);
1.3577 + nsMargin textMargin;
1.3578 + textContext->StyleMargin()->GetMargin(textMargin);
1.3579 + textRect.Deflate(textMargin);
1.3580 +
1.3581 + // Adjust the rect for its border and padding.
1.3582 + nsMargin bp(0,0,0,0);
1.3583 + GetBorderPadding(textContext, bp);
1.3584 + textRect.Deflate(bp);
1.3585 +
1.3586 + // Compute our text size.
1.3587 + nsRefPtr<nsFontMetrics> fontMet;
1.3588 + nsLayoutUtils::GetFontMetricsForStyleContext(textContext,
1.3589 + getter_AddRefs(fontMet));
1.3590 +
1.3591 + nscoord height = fontMet->MaxHeight();
1.3592 + nscoord baseline = fontMet->MaxAscent();
1.3593 +
1.3594 + // Center the text. XXX Obey vertical-align style prop?
1.3595 + if (height < textRect.height) {
1.3596 + textRect.y += (textRect.height - height)/2;
1.3597 + textRect.height = height;
1.3598 + }
1.3599 +
1.3600 + // Set our font.
1.3601 + aRenderingContext.SetFont(fontMet);
1.3602 +
1.3603 + AdjustForCellText(text, aRowIndex, aColumn, aRenderingContext, textRect);
1.3604 + textRect.Inflate(bp);
1.3605 +
1.3606 + // Subtract out the remaining width.
1.3607 + if (!isRTL)
1.3608 + aCurrX += textRect.width + textMargin.LeftRight();
1.3609 +
1.3610 + PaintBackgroundLayer(textContext, aPresContext, aRenderingContext, textRect, aDirtyRect);
1.3611 +
1.3612 + // Time to paint our text.
1.3613 + textRect.Deflate(bp);
1.3614 +
1.3615 + // Set our color.
1.3616 + aRenderingContext.SetColor(textContext->StyleColor()->mColor);
1.3617 +
1.3618 + // Draw decorations.
1.3619 + uint8_t decorations = textContext->StyleTextReset()->mTextDecorationLine;
1.3620 +
1.3621 + nscoord offset;
1.3622 + nscoord size;
1.3623 + if (decorations & (NS_FONT_DECORATION_OVERLINE | NS_FONT_DECORATION_UNDERLINE)) {
1.3624 + fontMet->GetUnderline(offset, size);
1.3625 + if (decorations & NS_FONT_DECORATION_OVERLINE)
1.3626 + aRenderingContext.FillRect(textRect.x, textRect.y, textRect.width, size);
1.3627 + if (decorations & NS_FONT_DECORATION_UNDERLINE)
1.3628 + aRenderingContext.FillRect(textRect.x, textRect.y + baseline - offset, textRect.width, size);
1.3629 + }
1.3630 + if (decorations & NS_FONT_DECORATION_LINE_THROUGH) {
1.3631 + fontMet->GetStrikeout(offset, size);
1.3632 + aRenderingContext.FillRect(textRect.x, textRect.y + baseline - offset, textRect.width, size);
1.3633 + }
1.3634 + nsStyleContext* cellContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreecell);
1.3635 +
1.3636 + gfxContext* ctx = aRenderingContext.ThebesContext();
1.3637 + if (opacity != 1.0f) {
1.3638 + ctx->PushGroup(gfxContentType::COLOR_ALPHA);
1.3639 + }
1.3640 +
1.3641 + nsLayoutUtils::DrawString(this, &aRenderingContext, text.get(), text.Length(),
1.3642 + textRect.TopLeft() + nsPoint(0, baseline), cellContext);
1.3643 +
1.3644 + if (opacity != 1.0f) {
1.3645 + ctx->PopGroupToSource();
1.3646 + ctx->Paint(opacity);
1.3647 + }
1.3648 +
1.3649 +}
1.3650 +
1.3651 +void
1.3652 +nsTreeBodyFrame::PaintCheckbox(int32_t aRowIndex,
1.3653 + nsTreeColumn* aColumn,
1.3654 + const nsRect& aCheckboxRect,
1.3655 + nsPresContext* aPresContext,
1.3656 + nsRenderingContext& aRenderingContext,
1.3657 + const nsRect& aDirtyRect)
1.3658 +{
1.3659 + NS_PRECONDITION(aColumn && aColumn->GetFrame(), "invalid column passed");
1.3660 +
1.3661 + // Resolve style for the checkbox.
1.3662 + nsStyleContext* checkboxContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreecheckbox);
1.3663 +
1.3664 + nscoord rightEdge = aCheckboxRect.XMost();
1.3665 +
1.3666 + // Obtain the margins for the checkbox and then deflate our rect by that
1.3667 + // amount. The checkbox is assumed to be contained within the deflated rect.
1.3668 + nsRect checkboxRect(aCheckboxRect);
1.3669 + nsMargin checkboxMargin;
1.3670 + checkboxContext->StyleMargin()->GetMargin(checkboxMargin);
1.3671 + checkboxRect.Deflate(checkboxMargin);
1.3672 +
1.3673 + nsRect imageSize = GetImageSize(aRowIndex, aColumn, true, checkboxContext);
1.3674 +
1.3675 + if (imageSize.height > checkboxRect.height)
1.3676 + imageSize.height = checkboxRect.height;
1.3677 + if (imageSize.width > checkboxRect.width)
1.3678 + imageSize.width = checkboxRect.width;
1.3679 +
1.3680 + if (StyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL)
1.3681 + checkboxRect.x = rightEdge - checkboxRect.width;
1.3682 +
1.3683 + // Paint our borders and background for our image rect.
1.3684 + PaintBackgroundLayer(checkboxContext, aPresContext, aRenderingContext, checkboxRect, aDirtyRect);
1.3685 +
1.3686 + // Time to paint the checkbox.
1.3687 + // Adjust the rect for its border and padding.
1.3688 + nsMargin bp(0,0,0,0);
1.3689 + GetBorderPadding(checkboxContext, bp);
1.3690 + checkboxRect.Deflate(bp);
1.3691 +
1.3692 + // Get the image for drawing.
1.3693 + nsCOMPtr<imgIContainer> image;
1.3694 + bool useImageRegion = true;
1.3695 + GetImage(aRowIndex, aColumn, true, checkboxContext, useImageRegion, getter_AddRefs(image));
1.3696 + if (image) {
1.3697 + nsPoint pt = checkboxRect.TopLeft();
1.3698 +
1.3699 + if (imageSize.height < checkboxRect.height) {
1.3700 + pt.y += (checkboxRect.height - imageSize.height)/2;
1.3701 + }
1.3702 +
1.3703 + if (imageSize.width < checkboxRect.width) {
1.3704 + pt.x += (checkboxRect.width - imageSize.width)/2;
1.3705 + }
1.3706 +
1.3707 + // Paint the image.
1.3708 + nsLayoutUtils::DrawSingleUnscaledImage(&aRenderingContext, image,
1.3709 + GraphicsFilter::FILTER_NEAREST, pt, &aDirtyRect,
1.3710 + imgIContainer::FLAG_NONE, &imageSize);
1.3711 + }
1.3712 +}
1.3713 +
1.3714 +void
1.3715 +nsTreeBodyFrame::PaintProgressMeter(int32_t aRowIndex,
1.3716 + nsTreeColumn* aColumn,
1.3717 + const nsRect& aProgressMeterRect,
1.3718 + nsPresContext* aPresContext,
1.3719 + nsRenderingContext& aRenderingContext,
1.3720 + const nsRect& aDirtyRect)
1.3721 +{
1.3722 + NS_PRECONDITION(aColumn && aColumn->GetFrame(), "invalid column passed");
1.3723 +
1.3724 + // Resolve style for the progress meter. It contains all the info we need
1.3725 + // to lay ourselves out and to paint.
1.3726 + nsStyleContext* meterContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreeprogressmeter);
1.3727 +
1.3728 + // Obtain the margins for the progress meter and then deflate our rect by that
1.3729 + // amount. The progress meter is assumed to be contained within the deflated
1.3730 + // rect.
1.3731 + nsRect meterRect(aProgressMeterRect);
1.3732 + nsMargin meterMargin;
1.3733 + meterContext->StyleMargin()->GetMargin(meterMargin);
1.3734 + meterRect.Deflate(meterMargin);
1.3735 +
1.3736 + // Paint our borders and background for our progress meter rect.
1.3737 + PaintBackgroundLayer(meterContext, aPresContext, aRenderingContext, meterRect, aDirtyRect);
1.3738 +
1.3739 + // Time to paint our progress.
1.3740 + int32_t state;
1.3741 + mView->GetProgressMode(aRowIndex, aColumn, &state);
1.3742 + if (state == nsITreeView::PROGRESS_NORMAL) {
1.3743 + // Adjust the rect for its border and padding.
1.3744 + AdjustForBorderPadding(meterContext, meterRect);
1.3745 +
1.3746 + // Set our color.
1.3747 + aRenderingContext.SetColor(meterContext->StyleColor()->mColor);
1.3748 +
1.3749 + // Now obtain the value for our cell.
1.3750 + nsAutoString value;
1.3751 + mView->GetCellValue(aRowIndex, aColumn, value);
1.3752 +
1.3753 + nsresult rv;
1.3754 + int32_t intValue = value.ToInteger(&rv);
1.3755 + if (intValue < 0)
1.3756 + intValue = 0;
1.3757 + else if (intValue > 100)
1.3758 + intValue = 100;
1.3759 +
1.3760 + nscoord meterWidth = NSToCoordRound((float)intValue / 100 * meterRect.width);
1.3761 + if (StyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL)
1.3762 + meterRect.x += meterRect.width - meterWidth; // right align
1.3763 + meterRect.width = meterWidth;
1.3764 + bool useImageRegion = true;
1.3765 + nsCOMPtr<imgIContainer> image;
1.3766 + GetImage(aRowIndex, aColumn, true, meterContext, useImageRegion, getter_AddRefs(image));
1.3767 + if (image) {
1.3768 + int32_t width, height;
1.3769 + image->GetWidth(&width);
1.3770 + image->GetHeight(&height);
1.3771 + nsSize size(width*nsDeviceContext::AppUnitsPerCSSPixel(),
1.3772 + height*nsDeviceContext::AppUnitsPerCSSPixel());
1.3773 + nsLayoutUtils::DrawImage(&aRenderingContext, image,
1.3774 + nsLayoutUtils::GetGraphicsFilterForFrame(this),
1.3775 + nsRect(meterRect.TopLeft(), size), meterRect, meterRect.TopLeft(),
1.3776 + aDirtyRect, imgIContainer::FLAG_NONE);
1.3777 + } else {
1.3778 + aRenderingContext.FillRect(meterRect);
1.3779 + }
1.3780 + }
1.3781 + else if (state == nsITreeView::PROGRESS_UNDETERMINED) {
1.3782 + // Adjust the rect for its border and padding.
1.3783 + AdjustForBorderPadding(meterContext, meterRect);
1.3784 +
1.3785 + bool useImageRegion = true;
1.3786 + nsCOMPtr<imgIContainer> image;
1.3787 + GetImage(aRowIndex, aColumn, true, meterContext, useImageRegion, getter_AddRefs(image));
1.3788 + if (image) {
1.3789 + int32_t width, height;
1.3790 + image->GetWidth(&width);
1.3791 + image->GetHeight(&height);
1.3792 + nsSize size(width*nsDeviceContext::AppUnitsPerCSSPixel(),
1.3793 + height*nsDeviceContext::AppUnitsPerCSSPixel());
1.3794 + nsLayoutUtils::DrawImage(&aRenderingContext, image,
1.3795 + nsLayoutUtils::GetGraphicsFilterForFrame(this),
1.3796 + nsRect(meterRect.TopLeft(), size), meterRect, meterRect.TopLeft(),
1.3797 + aDirtyRect, imgIContainer::FLAG_NONE);
1.3798 + }
1.3799 + }
1.3800 +}
1.3801 +
1.3802 +
1.3803 +void
1.3804 +nsTreeBodyFrame::PaintDropFeedback(const nsRect& aDropFeedbackRect,
1.3805 + nsPresContext* aPresContext,
1.3806 + nsRenderingContext& aRenderingContext,
1.3807 + const nsRect& aDirtyRect,
1.3808 + nsPoint aPt)
1.3809 +{
1.3810 + // Paint the drop feedback in between rows.
1.3811 +
1.3812 + nscoord currX;
1.3813 +
1.3814 + // Adjust for the primary cell.
1.3815 + nsTreeColumn* primaryCol = mColumns->GetPrimaryColumn();
1.3816 +
1.3817 + if (primaryCol) {
1.3818 +#ifdef DEBUG
1.3819 + nsresult rv =
1.3820 +#endif
1.3821 + primaryCol->GetXInTwips(this, &currX);
1.3822 + NS_ASSERTION(NS_SUCCEEDED(rv), "primary column is invalid?");
1.3823 +
1.3824 + currX += aPt.x - mHorzPosition;
1.3825 + } else {
1.3826 + currX = aDropFeedbackRect.x;
1.3827 + }
1.3828 +
1.3829 + PrefillPropertyArray(mSlots->mDropRow, primaryCol);
1.3830 +
1.3831 + // Resolve the style to use for the drop feedback.
1.3832 + nsStyleContext* feedbackContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreedropfeedback);
1.3833 +
1.3834 + // Paint only if it is visible.
1.3835 + if (feedbackContext->StyleVisibility()->IsVisibleOrCollapsed()) {
1.3836 + int32_t level;
1.3837 + mView->GetLevel(mSlots->mDropRow, &level);
1.3838 +
1.3839 + // If our previous or next row has greater level use that for
1.3840 + // correct visual indentation.
1.3841 + if (mSlots->mDropOrient == nsITreeView::DROP_BEFORE) {
1.3842 + if (mSlots->mDropRow > 0) {
1.3843 + int32_t previousLevel;
1.3844 + mView->GetLevel(mSlots->mDropRow - 1, &previousLevel);
1.3845 + if (previousLevel > level)
1.3846 + level = previousLevel;
1.3847 + }
1.3848 + }
1.3849 + else {
1.3850 + if (mSlots->mDropRow < mRowCount - 1) {
1.3851 + int32_t nextLevel;
1.3852 + mView->GetLevel(mSlots->mDropRow + 1, &nextLevel);
1.3853 + if (nextLevel > level)
1.3854 + level = nextLevel;
1.3855 + }
1.3856 + }
1.3857 +
1.3858 + currX += mIndentation * level;
1.3859 +
1.3860 + if (primaryCol){
1.3861 + nsStyleContext* twistyContext = GetPseudoStyleContext(nsCSSAnonBoxes::moztreetwisty);
1.3862 + nsRect imageSize;
1.3863 + nsRect twistyRect;
1.3864 + GetTwistyRect(mSlots->mDropRow, primaryCol, imageSize, twistyRect, aPresContext,
1.3865 + aRenderingContext, twistyContext);
1.3866 + nsMargin twistyMargin;
1.3867 + twistyContext->StyleMargin()->GetMargin(twistyMargin);
1.3868 + twistyRect.Inflate(twistyMargin);
1.3869 + currX += twistyRect.width;
1.3870 + }
1.3871 +
1.3872 + const nsStylePosition* stylePosition = feedbackContext->StylePosition();
1.3873 +
1.3874 + // Obtain the width for the drop feedback or use default value.
1.3875 + nscoord width;
1.3876 + if (stylePosition->mWidth.GetUnit() == eStyleUnit_Coord)
1.3877 + width = stylePosition->mWidth.GetCoordValue();
1.3878 + else {
1.3879 + // Use default width 50px.
1.3880 + width = nsPresContext::CSSPixelsToAppUnits(50);
1.3881 + }
1.3882 +
1.3883 + // Obtain the height for the drop feedback or use default value.
1.3884 + nscoord height;
1.3885 + if (stylePosition->mHeight.GetUnit() == eStyleUnit_Coord)
1.3886 + height = stylePosition->mHeight.GetCoordValue();
1.3887 + else {
1.3888 + // Use default height 2px.
1.3889 + height = nsPresContext::CSSPixelsToAppUnits(2);
1.3890 + }
1.3891 +
1.3892 + // Obtain the margins for the drop feedback and then deflate our rect
1.3893 + // by that amount.
1.3894 + nsRect feedbackRect(currX, aDropFeedbackRect.y, width, height);
1.3895 + nsMargin margin;
1.3896 + feedbackContext->StyleMargin()->GetMargin(margin);
1.3897 + feedbackRect.Deflate(margin);
1.3898 +
1.3899 + feedbackRect.y += (aDropFeedbackRect.height - height) / 2;
1.3900 +
1.3901 + // Finally paint the drop feedback.
1.3902 + PaintBackgroundLayer(feedbackContext, aPresContext, aRenderingContext, feedbackRect, aDirtyRect);
1.3903 + }
1.3904 +}
1.3905 +
1.3906 +void
1.3907 +nsTreeBodyFrame::PaintBackgroundLayer(nsStyleContext* aStyleContext,
1.3908 + nsPresContext* aPresContext,
1.3909 + nsRenderingContext& aRenderingContext,
1.3910 + const nsRect& aRect,
1.3911 + const nsRect& aDirtyRect)
1.3912 +{
1.3913 + const nsStyleBorder* myBorder = aStyleContext->StyleBorder();
1.3914 +
1.3915 + nsCSSRendering::PaintBackgroundWithSC(aPresContext, aRenderingContext,
1.3916 + this, aDirtyRect, aRect,
1.3917 + aStyleContext, *myBorder,
1.3918 + nsCSSRendering::PAINTBG_SYNC_DECODE_IMAGES);
1.3919 +
1.3920 + nsCSSRendering::PaintBorderWithStyleBorder(aPresContext, aRenderingContext,
1.3921 + this, aDirtyRect, aRect,
1.3922 + *myBorder, mStyleContext);
1.3923 +
1.3924 + nsCSSRendering::PaintOutline(aPresContext, aRenderingContext, this,
1.3925 + aDirtyRect, aRect, aStyleContext);
1.3926 +}
1.3927 +
1.3928 +// Scrolling
1.3929 +nsresult
1.3930 +nsTreeBodyFrame::EnsureRowIsVisible(int32_t aRow)
1.3931 +{
1.3932 + ScrollParts parts = GetScrollParts();
1.3933 + nsresult rv = EnsureRowIsVisibleInternal(parts, aRow);
1.3934 + NS_ENSURE_SUCCESS(rv, rv);
1.3935 + UpdateScrollbars(parts);
1.3936 + return rv;
1.3937 +}
1.3938 +
1.3939 +nsresult nsTreeBodyFrame::EnsureRowIsVisibleInternal(const ScrollParts& aParts, int32_t aRow)
1.3940 +{
1.3941 + if (!mView || !mPageLength)
1.3942 + return NS_OK;
1.3943 +
1.3944 + if (mTopRowIndex <= aRow && mTopRowIndex+mPageLength > aRow)
1.3945 + return NS_OK;
1.3946 +
1.3947 + if (aRow < mTopRowIndex)
1.3948 + ScrollToRowInternal(aParts, aRow);
1.3949 + else {
1.3950 + // Bring it just on-screen.
1.3951 + int32_t distance = aRow - (mTopRowIndex+mPageLength)+1;
1.3952 + ScrollToRowInternal(aParts, mTopRowIndex+distance);
1.3953 + }
1.3954 +
1.3955 + return NS_OK;
1.3956 +}
1.3957 +
1.3958 +nsresult
1.3959 +nsTreeBodyFrame::EnsureCellIsVisible(int32_t aRow, nsITreeColumn* aCol)
1.3960 +{
1.3961 + nsRefPtr<nsTreeColumn> col = GetColumnImpl(aCol);
1.3962 + if (!col)
1.3963 + return NS_ERROR_INVALID_ARG;
1.3964 +
1.3965 + ScrollParts parts = GetScrollParts();
1.3966 +
1.3967 + nscoord result = -1;
1.3968 + nsresult rv;
1.3969 +
1.3970 + nscoord columnPos;
1.3971 + rv = col->GetXInTwips(this, &columnPos);
1.3972 + if(NS_FAILED(rv)) return rv;
1.3973 +
1.3974 + nscoord columnWidth;
1.3975 + rv = col->GetWidthInTwips(this, &columnWidth);
1.3976 + if(NS_FAILED(rv)) return rv;
1.3977 +
1.3978 + // If the start of the column is before the
1.3979 + // start of the horizontal view, then scroll
1.3980 + if (columnPos < mHorzPosition)
1.3981 + result = columnPos;
1.3982 + // If the end of the column is past the end of
1.3983 + // the horizontal view, then scroll
1.3984 + else if ((columnPos + columnWidth) > (mHorzPosition + mInnerBox.width))
1.3985 + result = ((columnPos + columnWidth) - (mHorzPosition + mInnerBox.width)) + mHorzPosition;
1.3986 +
1.3987 + if (result != -1) {
1.3988 + rv = ScrollHorzInternal(parts, result);
1.3989 + if(NS_FAILED(rv)) return rv;
1.3990 + }
1.3991 +
1.3992 + rv = EnsureRowIsVisibleInternal(parts, aRow);
1.3993 + NS_ENSURE_SUCCESS(rv, rv);
1.3994 + UpdateScrollbars(parts);
1.3995 + return rv;
1.3996 +}
1.3997 +
1.3998 +nsresult
1.3999 +nsTreeBodyFrame::ScrollToCell(int32_t aRow, nsITreeColumn* aCol)
1.4000 +{
1.4001 + ScrollParts parts = GetScrollParts();
1.4002 + nsresult rv = ScrollToRowInternal(parts, aRow);
1.4003 + NS_ENSURE_SUCCESS(rv, rv);
1.4004 +
1.4005 + rv = ScrollToColumnInternal(parts, aCol);
1.4006 + NS_ENSURE_SUCCESS(rv, rv);
1.4007 +
1.4008 + UpdateScrollbars(parts);
1.4009 + return rv;
1.4010 +}
1.4011 +
1.4012 +nsresult
1.4013 +nsTreeBodyFrame::ScrollToColumn(nsITreeColumn* aCol)
1.4014 +{
1.4015 + ScrollParts parts = GetScrollParts();
1.4016 + nsresult rv = ScrollToColumnInternal(parts, aCol);
1.4017 + NS_ENSURE_SUCCESS(rv, rv);
1.4018 + UpdateScrollbars(parts);
1.4019 + return rv;
1.4020 +}
1.4021 +
1.4022 +nsresult nsTreeBodyFrame::ScrollToColumnInternal(const ScrollParts& aParts,
1.4023 + nsITreeColumn* aCol)
1.4024 +{
1.4025 + nsRefPtr<nsTreeColumn> col = GetColumnImpl(aCol);
1.4026 + if (!col)
1.4027 + return NS_ERROR_INVALID_ARG;
1.4028 +
1.4029 + nscoord x;
1.4030 + nsresult rv = col->GetXInTwips(this, &x);
1.4031 + if (NS_FAILED(rv))
1.4032 + return rv;
1.4033 +
1.4034 + return ScrollHorzInternal(aParts, x);
1.4035 +}
1.4036 +
1.4037 +nsresult
1.4038 +nsTreeBodyFrame::ScrollToHorizontalPosition(int32_t aHorizontalPosition)
1.4039 +{
1.4040 + ScrollParts parts = GetScrollParts();
1.4041 + int32_t position = nsPresContext::CSSPixelsToAppUnits(aHorizontalPosition);
1.4042 + nsresult rv = ScrollHorzInternal(parts, position);
1.4043 + NS_ENSURE_SUCCESS(rv, rv);
1.4044 + UpdateScrollbars(parts);
1.4045 + return rv;
1.4046 +}
1.4047 +
1.4048 +nsresult
1.4049 +nsTreeBodyFrame::ScrollToRow(int32_t aRow)
1.4050 +{
1.4051 + ScrollParts parts = GetScrollParts();
1.4052 + nsresult rv = ScrollToRowInternal(parts, aRow);
1.4053 + NS_ENSURE_SUCCESS(rv, rv);
1.4054 + UpdateScrollbars(parts);
1.4055 + return rv;
1.4056 +}
1.4057 +
1.4058 +nsresult nsTreeBodyFrame::ScrollToRowInternal(const ScrollParts& aParts, int32_t aRow)
1.4059 +{
1.4060 + ScrollInternal(aParts, aRow);
1.4061 +
1.4062 + return NS_OK;
1.4063 +}
1.4064 +
1.4065 +nsresult
1.4066 +nsTreeBodyFrame::ScrollByLines(int32_t aNumLines)
1.4067 +{
1.4068 + if (!mView)
1.4069 + return NS_OK;
1.4070 +
1.4071 + int32_t newIndex = mTopRowIndex + aNumLines;
1.4072 + if (newIndex < 0)
1.4073 + newIndex = 0;
1.4074 + else {
1.4075 + int32_t lastPageTopRow = mRowCount - mPageLength;
1.4076 + if (newIndex > lastPageTopRow)
1.4077 + newIndex = lastPageTopRow;
1.4078 + }
1.4079 + ScrollToRow(newIndex);
1.4080 +
1.4081 + return NS_OK;
1.4082 +}
1.4083 +
1.4084 +nsresult
1.4085 +nsTreeBodyFrame::ScrollByPages(int32_t aNumPages)
1.4086 +{
1.4087 + if (!mView)
1.4088 + return NS_OK;
1.4089 +
1.4090 + int32_t newIndex = mTopRowIndex + aNumPages * mPageLength;
1.4091 + if (newIndex < 0)
1.4092 + newIndex = 0;
1.4093 + else {
1.4094 + int32_t lastPageTopRow = mRowCount - mPageLength;
1.4095 + if (newIndex > lastPageTopRow)
1.4096 + newIndex = lastPageTopRow;
1.4097 + }
1.4098 + ScrollToRow(newIndex);
1.4099 +
1.4100 + return NS_OK;
1.4101 +}
1.4102 +
1.4103 +nsresult
1.4104 +nsTreeBodyFrame::ScrollInternal(const ScrollParts& aParts, int32_t aRow)
1.4105 +{
1.4106 + if (!mView)
1.4107 + return NS_OK;
1.4108 +
1.4109 + int32_t delta = aRow - mTopRowIndex;
1.4110 +
1.4111 + if (delta > 0) {
1.4112 + if (mTopRowIndex == (mRowCount - mPageLength + 1))
1.4113 + return NS_OK;
1.4114 + }
1.4115 + else {
1.4116 + if (mTopRowIndex == 0)
1.4117 + return NS_OK;
1.4118 + }
1.4119 +
1.4120 + mTopRowIndex += delta;
1.4121 +
1.4122 + Invalidate();
1.4123 +
1.4124 + PostScrollEvent();
1.4125 + return NS_OK;
1.4126 +}
1.4127 +
1.4128 +nsresult
1.4129 +nsTreeBodyFrame::ScrollHorzInternal(const ScrollParts& aParts, int32_t aPosition)
1.4130 +{
1.4131 + if (!mView || !aParts.mColumnsScrollFrame || !aParts.mHScrollbar)
1.4132 + return NS_OK;
1.4133 +
1.4134 + if (aPosition == mHorzPosition)
1.4135 + return NS_OK;
1.4136 +
1.4137 + if (aPosition < 0 || aPosition > mHorzWidth)
1.4138 + return NS_OK;
1.4139 +
1.4140 + nsRect bounds = aParts.mColumnsFrame->GetRect();
1.4141 + if (aPosition > (mHorzWidth - bounds.width))
1.4142 + aPosition = mHorzWidth - bounds.width;
1.4143 +
1.4144 + mHorzPosition = aPosition;
1.4145 +
1.4146 + Invalidate();
1.4147 +
1.4148 + // Update the column scroll view
1.4149 + nsWeakFrame weakFrame(this);
1.4150 + aParts.mColumnsScrollFrame->ScrollTo(nsPoint(mHorzPosition, 0),
1.4151 + nsIScrollableFrame::INSTANT);
1.4152 + if (!weakFrame.IsAlive()) {
1.4153 + return NS_ERROR_FAILURE;
1.4154 + }
1.4155 + // And fire off an event about it all
1.4156 + PostScrollEvent();
1.4157 + return NS_OK;
1.4158 +}
1.4159 +
1.4160 +NS_IMETHODIMP
1.4161 +nsTreeBodyFrame::ScrollbarButtonPressed(nsScrollbarFrame* aScrollbar, int32_t aOldIndex, int32_t aNewIndex)
1.4162 +{
1.4163 + ScrollParts parts = GetScrollParts();
1.4164 +
1.4165 + if (aScrollbar == parts.mVScrollbar) {
1.4166 + if (aNewIndex > aOldIndex)
1.4167 + ScrollToRowInternal(parts, mTopRowIndex+1);
1.4168 + else if (aNewIndex < aOldIndex)
1.4169 + ScrollToRowInternal(parts, mTopRowIndex-1);
1.4170 + } else {
1.4171 + nsresult rv = ScrollHorzInternal(parts, aNewIndex);
1.4172 + if (NS_FAILED(rv)) return rv;
1.4173 + }
1.4174 +
1.4175 + UpdateScrollbars(parts);
1.4176 +
1.4177 + return NS_OK;
1.4178 +}
1.4179 +
1.4180 +NS_IMETHODIMP
1.4181 +nsTreeBodyFrame::PositionChanged(nsScrollbarFrame* aScrollbar, int32_t aOldIndex, int32_t& aNewIndex)
1.4182 +{
1.4183 + ScrollParts parts = GetScrollParts();
1.4184 +
1.4185 + if (aOldIndex == aNewIndex)
1.4186 + return NS_OK;
1.4187 +
1.4188 + // Vertical Scrollbar
1.4189 + if (parts.mVScrollbar == aScrollbar) {
1.4190 + nscoord rh = nsPresContext::AppUnitsToIntCSSPixels(mRowHeight);
1.4191 +
1.4192 + nscoord newrow = aNewIndex/rh;
1.4193 + ScrollInternal(parts, newrow);
1.4194 + // Horizontal Scrollbar
1.4195 + } else if (parts.mHScrollbar == aScrollbar) {
1.4196 + nsresult rv = ScrollHorzInternal(parts, aNewIndex);
1.4197 + if (NS_FAILED(rv)) return rv;
1.4198 + }
1.4199 +
1.4200 + UpdateScrollbars(parts);
1.4201 + return NS_OK;
1.4202 +}
1.4203 +
1.4204 +// The style cache.
1.4205 +nsStyleContext*
1.4206 +nsTreeBodyFrame::GetPseudoStyleContext(nsIAtom* aPseudoElement)
1.4207 +{
1.4208 + return mStyleCache.GetStyleContext(this, PresContext(), mContent,
1.4209 + mStyleContext, aPseudoElement,
1.4210 + mScratchArray);
1.4211 +}
1.4212 +
1.4213 +// Our comparator for resolving our complex pseudos
1.4214 +bool
1.4215 +nsTreeBodyFrame::PseudoMatches(nsCSSSelector* aSelector)
1.4216 +{
1.4217 + // Iterate the class list. For each item in the list, see if
1.4218 + // it is contained in our scratch array. If we have a miss, then
1.4219 + // we aren't a match. If all items in the class list are
1.4220 + // present in the scratch array, then we have a match.
1.4221 + nsAtomList* curr = aSelector->mClassList;
1.4222 + while (curr) {
1.4223 + if (!mScratchArray.Contains(curr->mAtom))
1.4224 + return false;
1.4225 + curr = curr->mNext;
1.4226 + }
1.4227 + return true;
1.4228 +}
1.4229 +
1.4230 +nsIContent*
1.4231 +nsTreeBodyFrame::GetBaseElement()
1.4232 +{
1.4233 + nsIFrame* parent = GetParent();
1.4234 + while (parent) {
1.4235 + nsIContent* content = parent->GetContent();
1.4236 + if (content) {
1.4237 + nsINodeInfo* ni = content->NodeInfo();
1.4238 +
1.4239 + if (ni->Equals(nsGkAtoms::tree, kNameSpaceID_XUL) ||
1.4240 + (ni->Equals(nsGkAtoms::select) &&
1.4241 + content->IsHTML()))
1.4242 + return content;
1.4243 + }
1.4244 +
1.4245 + parent = parent->GetParent();
1.4246 + }
1.4247 +
1.4248 + return nullptr;
1.4249 +}
1.4250 +
1.4251 +nsresult
1.4252 +nsTreeBodyFrame::ClearStyleAndImageCaches()
1.4253 +{
1.4254 + mStyleCache.Clear();
1.4255 + mImageCache.EnumerateRead(CancelImageRequest, this);
1.4256 + mImageCache.Clear();
1.4257 + return NS_OK;
1.4258 +}
1.4259 +
1.4260 +/* virtual */ void
1.4261 +nsTreeBodyFrame::DidSetStyleContext(nsStyleContext* aOldStyleContext)
1.4262 +{
1.4263 + nsLeafBoxFrame::DidSetStyleContext(aOldStyleContext);
1.4264 +
1.4265 + // Clear the style cache; the pointers are no longer even valid
1.4266 + mStyleCache.Clear();
1.4267 + // XXX The following is hacky, but it's not incorrect,
1.4268 + // and appears to fix a few bugs with style changes, like text zoom and
1.4269 + // dpi changes
1.4270 + mIndentation = GetIndentation();
1.4271 + mRowHeight = GetRowHeight();
1.4272 + mStringWidth = -1;
1.4273 +}
1.4274 +
1.4275 +bool
1.4276 +nsTreeBodyFrame::OffsetForHorzScroll(nsRect& rect, bool clip)
1.4277 +{
1.4278 + rect.x -= mHorzPosition;
1.4279 +
1.4280 + // Scrolled out before
1.4281 + if (rect.XMost() <= mInnerBox.x)
1.4282 + return false;
1.4283 +
1.4284 + // Scrolled out after
1.4285 + if (rect.x > mInnerBox.XMost())
1.4286 + return false;
1.4287 +
1.4288 + if (clip) {
1.4289 + nscoord leftEdge = std::max(rect.x, mInnerBox.x);
1.4290 + nscoord rightEdge = std::min(rect.XMost(), mInnerBox.XMost());
1.4291 + rect.x = leftEdge;
1.4292 + rect.width = rightEdge - leftEdge;
1.4293 +
1.4294 + // Should have returned false above
1.4295 + NS_ASSERTION(rect.width >= 0, "horz scroll code out of sync");
1.4296 + }
1.4297 +
1.4298 + return true;
1.4299 +}
1.4300 +
1.4301 +bool
1.4302 +nsTreeBodyFrame::CanAutoScroll(int32_t aRowIndex)
1.4303 +{
1.4304 + // Check first for partially visible last row.
1.4305 + if (aRowIndex == mRowCount - 1) {
1.4306 + nscoord y = mInnerBox.y + (aRowIndex - mTopRowIndex) * mRowHeight;
1.4307 + if (y < mInnerBox.height && y + mRowHeight > mInnerBox.height)
1.4308 + return true;
1.4309 + }
1.4310 +
1.4311 + if (aRowIndex > 0 && aRowIndex < mRowCount - 1)
1.4312 + return true;
1.4313 +
1.4314 + return false;
1.4315 +}
1.4316 +
1.4317 +// Given a dom event, figure out which row in the tree the mouse is over,
1.4318 +// if we should drop before/after/on that row or we should auto-scroll.
1.4319 +// Doesn't query the content about if the drag is allowable, that's done elsewhere.
1.4320 +//
1.4321 +// For containers, we break up the vertical space of the row as follows: if in
1.4322 +// the topmost 25%, the drop is _before_ the row the mouse is over; if in the
1.4323 +// last 25%, _after_; in the middle 50%, we consider it a drop _on_ the container.
1.4324 +//
1.4325 +// For non-containers, if the mouse is in the top 50% of the row, the drop is
1.4326 +// _before_ and the bottom 50% _after_
1.4327 +void
1.4328 +nsTreeBodyFrame::ComputeDropPosition(WidgetGUIEvent* aEvent,
1.4329 + int32_t* aRow,
1.4330 + int16_t* aOrient,
1.4331 + int16_t* aScrollLines)
1.4332 +{
1.4333 + *aOrient = -1;
1.4334 + *aScrollLines = 0;
1.4335 +
1.4336 + // Convert the event's point to our coordinates. We want it in
1.4337 + // the coordinates of our inner box's coordinates.
1.4338 + nsPoint pt = nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, this);
1.4339 + int32_t xTwips = pt.x - mInnerBox.x;
1.4340 + int32_t yTwips = pt.y - mInnerBox.y;
1.4341 +
1.4342 + *aRow = GetRowAt(xTwips, yTwips);
1.4343 + if (*aRow >=0) {
1.4344 + // Compute the top/bottom of the row in question.
1.4345 + int32_t yOffset = yTwips - mRowHeight * (*aRow - mTopRowIndex);
1.4346 +
1.4347 + bool isContainer = false;
1.4348 + mView->IsContainer (*aRow, &isContainer);
1.4349 + if (isContainer) {
1.4350 + // for a container, use a 25%/50%/25% breakdown
1.4351 + if (yOffset < mRowHeight / 4)
1.4352 + *aOrient = nsITreeView::DROP_BEFORE;
1.4353 + else if (yOffset > mRowHeight - (mRowHeight / 4))
1.4354 + *aOrient = nsITreeView::DROP_AFTER;
1.4355 + else
1.4356 + *aOrient = nsITreeView::DROP_ON;
1.4357 + }
1.4358 + else {
1.4359 + // for a non-container use a 50%/50% breakdown
1.4360 + if (yOffset < mRowHeight / 2)
1.4361 + *aOrient = nsITreeView::DROP_BEFORE;
1.4362 + else
1.4363 + *aOrient = nsITreeView::DROP_AFTER;
1.4364 + }
1.4365 + }
1.4366 +
1.4367 + if (CanAutoScroll(*aRow)) {
1.4368 + // Get the max value from the look and feel service.
1.4369 + int32_t scrollLinesMax =
1.4370 + LookAndFeel::GetInt(LookAndFeel::eIntID_TreeScrollLinesMax, 0);
1.4371 + scrollLinesMax--;
1.4372 + if (scrollLinesMax < 0)
1.4373 + scrollLinesMax = 0;
1.4374 +
1.4375 + // Determine if we're w/in a margin of the top/bottom of the tree during a drag.
1.4376 + // This will ultimately cause us to scroll, but that's done elsewhere.
1.4377 + nscoord height = (3 * mRowHeight) / 4;
1.4378 + if (yTwips < height) {
1.4379 + // scroll up
1.4380 + *aScrollLines = NSToIntRound(-scrollLinesMax * (1 - (float)yTwips / height) - 1);
1.4381 + }
1.4382 + else if (yTwips > mRect.height - height) {
1.4383 + // scroll down
1.4384 + *aScrollLines = NSToIntRound(scrollLinesMax * (1 - (float)(mRect.height - yTwips) / height) + 1);
1.4385 + }
1.4386 + }
1.4387 +} // ComputeDropPosition
1.4388 +
1.4389 +void
1.4390 +nsTreeBodyFrame::OpenCallback(nsITimer *aTimer, void *aClosure)
1.4391 +{
1.4392 + nsTreeBodyFrame* self = static_cast<nsTreeBodyFrame*>(aClosure);
1.4393 + if (self) {
1.4394 + aTimer->Cancel();
1.4395 + self->mSlots->mTimer = nullptr;
1.4396 +
1.4397 + if (self->mSlots->mDropRow >= 0) {
1.4398 + self->mSlots->mArray.AppendElement(self->mSlots->mDropRow);
1.4399 + self->mView->ToggleOpenState(self->mSlots->mDropRow);
1.4400 + }
1.4401 + }
1.4402 +}
1.4403 +
1.4404 +void
1.4405 +nsTreeBodyFrame::CloseCallback(nsITimer *aTimer, void *aClosure)
1.4406 +{
1.4407 + nsTreeBodyFrame* self = static_cast<nsTreeBodyFrame*>(aClosure);
1.4408 + if (self) {
1.4409 + aTimer->Cancel();
1.4410 + self->mSlots->mTimer = nullptr;
1.4411 +
1.4412 + for (uint32_t i = self->mSlots->mArray.Length(); i--; ) {
1.4413 + if (self->mView)
1.4414 + self->mView->ToggleOpenState(self->mSlots->mArray[i]);
1.4415 + }
1.4416 + self->mSlots->mArray.Clear();
1.4417 + }
1.4418 +}
1.4419 +
1.4420 +void
1.4421 +nsTreeBodyFrame::LazyScrollCallback(nsITimer *aTimer, void *aClosure)
1.4422 +{
1.4423 + nsTreeBodyFrame* self = static_cast<nsTreeBodyFrame*>(aClosure);
1.4424 + if (self) {
1.4425 + aTimer->Cancel();
1.4426 + self->mSlots->mTimer = nullptr;
1.4427 +
1.4428 + if (self->mView) {
1.4429 + // Set a new timer to scroll the tree repeatedly.
1.4430 + self->CreateTimer(LookAndFeel::eIntID_TreeScrollDelay,
1.4431 + ScrollCallback, nsITimer::TYPE_REPEATING_SLACK,
1.4432 + getter_AddRefs(self->mSlots->mTimer));
1.4433 + self->ScrollByLines(self->mSlots->mScrollLines);
1.4434 + // ScrollByLines may have deleted |self|.
1.4435 + }
1.4436 + }
1.4437 +}
1.4438 +
1.4439 +void
1.4440 +nsTreeBodyFrame::ScrollCallback(nsITimer *aTimer, void *aClosure)
1.4441 +{
1.4442 + nsTreeBodyFrame* self = static_cast<nsTreeBodyFrame*>(aClosure);
1.4443 + if (self) {
1.4444 + // Don't scroll if we are already at the top or bottom of the view.
1.4445 + if (self->mView && self->CanAutoScroll(self->mSlots->mDropRow)) {
1.4446 + self->ScrollByLines(self->mSlots->mScrollLines);
1.4447 + }
1.4448 + else {
1.4449 + aTimer->Cancel();
1.4450 + self->mSlots->mTimer = nullptr;
1.4451 + }
1.4452 + }
1.4453 +}
1.4454 +
1.4455 +NS_IMETHODIMP
1.4456 +nsTreeBodyFrame::ScrollEvent::Run()
1.4457 +{
1.4458 + if (mInner) {
1.4459 + mInner->FireScrollEvent();
1.4460 + }
1.4461 + return NS_OK;
1.4462 +}
1.4463 +
1.4464 +
1.4465 +void
1.4466 +nsTreeBodyFrame::FireScrollEvent()
1.4467 +{
1.4468 + mScrollEvent.Forget();
1.4469 + WidgetGUIEvent event(true, NS_SCROLL_EVENT, nullptr);
1.4470 + // scroll events fired at elements don't bubble
1.4471 + event.mFlags.mBubbles = false;
1.4472 + EventDispatcher::Dispatch(GetContent(), PresContext(), &event);
1.4473 +}
1.4474 +
1.4475 +void
1.4476 +nsTreeBodyFrame::PostScrollEvent()
1.4477 +{
1.4478 + if (mScrollEvent.IsPending())
1.4479 + return;
1.4480 +
1.4481 + nsRefPtr<ScrollEvent> ev = new ScrollEvent(this);
1.4482 + if (NS_FAILED(NS_DispatchToCurrentThread(ev))) {
1.4483 + NS_WARNING("failed to dispatch ScrollEvent");
1.4484 + } else {
1.4485 + mScrollEvent = ev;
1.4486 + }
1.4487 +}
1.4488 +
1.4489 +void
1.4490 +nsTreeBodyFrame::ScrollbarActivityStarted() const
1.4491 +{
1.4492 + if (mScrollbarActivity) {
1.4493 + mScrollbarActivity->ActivityStarted();
1.4494 + }
1.4495 +}
1.4496 +
1.4497 +void
1.4498 +nsTreeBodyFrame::ScrollbarActivityStopped() const
1.4499 +{
1.4500 + if (mScrollbarActivity) {
1.4501 + mScrollbarActivity->ActivityStopped();
1.4502 + }
1.4503 +}
1.4504 +
1.4505 +void
1.4506 +nsTreeBodyFrame::DetachImageListeners()
1.4507 +{
1.4508 + mCreatedListeners.Clear();
1.4509 +}
1.4510 +
1.4511 +void
1.4512 +nsTreeBodyFrame::RemoveTreeImageListener(nsTreeImageListener* aListener)
1.4513 +{
1.4514 + if (aListener) {
1.4515 + mCreatedListeners.RemoveEntry(aListener);
1.4516 + }
1.4517 +}
1.4518 +
1.4519 +#ifdef ACCESSIBILITY
1.4520 +void
1.4521 +nsTreeBodyFrame::FireRowCountChangedEvent(int32_t aIndex, int32_t aCount)
1.4522 +{
1.4523 + nsCOMPtr<nsIContent> content(GetBaseElement());
1.4524 + if (!content)
1.4525 + return;
1.4526 +
1.4527 + nsCOMPtr<nsIDOMDocument> domDoc = do_QueryInterface(content->OwnerDoc());
1.4528 + if (!domDoc)
1.4529 + return;
1.4530 +
1.4531 + nsCOMPtr<nsIDOMEvent> event;
1.4532 + domDoc->CreateEvent(NS_LITERAL_STRING("customevent"),
1.4533 + getter_AddRefs(event));
1.4534 +
1.4535 + nsCOMPtr<nsIDOMCustomEvent> treeEvent(do_QueryInterface(event));
1.4536 + if (!treeEvent)
1.4537 + return;
1.4538 +
1.4539 + nsCOMPtr<nsIWritablePropertyBag2> propBag(
1.4540 + do_CreateInstance("@mozilla.org/hash-property-bag;1"));
1.4541 + if (!propBag)
1.4542 + return;
1.4543 +
1.4544 + // Set 'index' data - the row index rows are changed from.
1.4545 + propBag->SetPropertyAsInt32(NS_LITERAL_STRING("index"), aIndex);
1.4546 +
1.4547 + // Set 'count' data - the number of changed rows.
1.4548 + propBag->SetPropertyAsInt32(NS_LITERAL_STRING("count"), aCount);
1.4549 +
1.4550 + nsCOMPtr<nsIWritableVariant> detailVariant(
1.4551 + do_CreateInstance("@mozilla.org/variant;1"));
1.4552 + if (!detailVariant)
1.4553 + return;
1.4554 +
1.4555 + detailVariant->SetAsISupports(propBag);
1.4556 + treeEvent->InitCustomEvent(NS_LITERAL_STRING("TreeRowCountChanged"),
1.4557 + true, false, detailVariant);
1.4558 +
1.4559 + event->SetTrusted(true);
1.4560 +
1.4561 + nsRefPtr<AsyncEventDispatcher> asyncDispatcher =
1.4562 + new AsyncEventDispatcher(content, event);
1.4563 + asyncDispatcher->PostDOMEvent();
1.4564 +}
1.4565 +
1.4566 +void
1.4567 +nsTreeBodyFrame::FireInvalidateEvent(int32_t aStartRowIdx, int32_t aEndRowIdx,
1.4568 + nsITreeColumn *aStartCol,
1.4569 + nsITreeColumn *aEndCol)
1.4570 +{
1.4571 + nsCOMPtr<nsIContent> content(GetBaseElement());
1.4572 + if (!content)
1.4573 + return;
1.4574 +
1.4575 + nsCOMPtr<nsIDOMDocument> domDoc = do_QueryInterface(content->OwnerDoc());
1.4576 + if (!domDoc)
1.4577 + return;
1.4578 +
1.4579 + nsCOMPtr<nsIDOMEvent> event;
1.4580 + domDoc->CreateEvent(NS_LITERAL_STRING("customevent"),
1.4581 + getter_AddRefs(event));
1.4582 +
1.4583 + nsCOMPtr<nsIDOMCustomEvent> treeEvent(do_QueryInterface(event));
1.4584 + if (!treeEvent)
1.4585 + return;
1.4586 +
1.4587 + nsCOMPtr<nsIWritablePropertyBag2> propBag(
1.4588 + do_CreateInstance("@mozilla.org/hash-property-bag;1"));
1.4589 + if (!propBag)
1.4590 + return;
1.4591 +
1.4592 + if (aStartRowIdx != -1 && aEndRowIdx != -1) {
1.4593 + // Set 'startrow' data - the start index of invalidated rows.
1.4594 + propBag->SetPropertyAsInt32(NS_LITERAL_STRING("startrow"),
1.4595 + aStartRowIdx);
1.4596 +
1.4597 + // Set 'endrow' data - the end index of invalidated rows.
1.4598 + propBag->SetPropertyAsInt32(NS_LITERAL_STRING("endrow"),
1.4599 + aEndRowIdx);
1.4600 + }
1.4601 +
1.4602 + if (aStartCol && aEndCol) {
1.4603 + // Set 'startcolumn' data - the start index of invalidated rows.
1.4604 + int32_t startColIdx = 0;
1.4605 + nsresult rv = aStartCol->GetIndex(&startColIdx);
1.4606 + if (NS_FAILED(rv))
1.4607 + return;
1.4608 +
1.4609 + propBag->SetPropertyAsInt32(NS_LITERAL_STRING("startcolumn"),
1.4610 + startColIdx);
1.4611 +
1.4612 + // Set 'endcolumn' data - the start index of invalidated rows.
1.4613 + int32_t endColIdx = 0;
1.4614 + rv = aEndCol->GetIndex(&endColIdx);
1.4615 + if (NS_FAILED(rv))
1.4616 + return;
1.4617 +
1.4618 + propBag->SetPropertyAsInt32(NS_LITERAL_STRING("endcolumn"),
1.4619 + endColIdx);
1.4620 + }
1.4621 +
1.4622 + nsCOMPtr<nsIWritableVariant> detailVariant(
1.4623 + do_CreateInstance("@mozilla.org/variant;1"));
1.4624 + if (!detailVariant)
1.4625 + return;
1.4626 +
1.4627 + detailVariant->SetAsISupports(propBag);
1.4628 + treeEvent->InitCustomEvent(NS_LITERAL_STRING("TreeInvalidated"),
1.4629 + true, false, detailVariant);
1.4630 +
1.4631 + event->SetTrusted(true);
1.4632 +
1.4633 + nsRefPtr<AsyncEventDispatcher> asyncDispatcher =
1.4634 + new AsyncEventDispatcher(content, event);
1.4635 + asyncDispatcher->PostDOMEvent();
1.4636 +}
1.4637 +#endif
1.4638 +
1.4639 +class nsOverflowChecker : public nsRunnable
1.4640 +{
1.4641 +public:
1.4642 + nsOverflowChecker(nsTreeBodyFrame* aFrame) : mFrame(aFrame) {}
1.4643 + NS_IMETHOD Run() MOZ_OVERRIDE
1.4644 + {
1.4645 + if (mFrame.IsAlive()) {
1.4646 + nsTreeBodyFrame* tree = static_cast<nsTreeBodyFrame*>(mFrame.GetFrame());
1.4647 + nsTreeBodyFrame::ScrollParts parts = tree->GetScrollParts();
1.4648 + tree->CheckOverflow(parts);
1.4649 + }
1.4650 + return NS_OK;
1.4651 + }
1.4652 +private:
1.4653 + nsWeakFrame mFrame;
1.4654 +};
1.4655 +
1.4656 +bool
1.4657 +nsTreeBodyFrame::FullScrollbarsUpdate(bool aNeedsFullInvalidation)
1.4658 +{
1.4659 + ScrollParts parts = GetScrollParts();
1.4660 + nsWeakFrame weakFrame(this);
1.4661 + nsWeakFrame weakColumnsFrame(parts.mColumnsFrame);
1.4662 + UpdateScrollbars(parts);
1.4663 + NS_ENSURE_TRUE(weakFrame.IsAlive(), false);
1.4664 + if (aNeedsFullInvalidation) {
1.4665 + Invalidate();
1.4666 + }
1.4667 + InvalidateScrollbars(parts, weakColumnsFrame);
1.4668 + NS_ENSURE_TRUE(weakFrame.IsAlive(), false);
1.4669 +
1.4670 + // Overflow checking dispatches synchronous events, which can cause infinite
1.4671 + // recursion during reflow. Do the first overflow check synchronously, but
1.4672 + // force any nested checks to round-trip through the event loop. See bug
1.4673 + // 905909.
1.4674 + nsRefPtr<nsOverflowChecker> checker = new nsOverflowChecker(this);
1.4675 + if (!mCheckingOverflow) {
1.4676 + nsContentUtils::AddScriptRunner(checker);
1.4677 + } else {
1.4678 + NS_DispatchToCurrentThread(checker);
1.4679 + }
1.4680 + return weakFrame.IsAlive();
1.4681 +}
1.4682 +
1.4683 +nsresult
1.4684 +nsTreeBodyFrame::OnImageIsAnimated(imgIRequest* aRequest)
1.4685 +{
1.4686 + nsLayoutUtils::RegisterImageRequest(PresContext(),
1.4687 + aRequest, nullptr);
1.4688 +
1.4689 + return NS_OK;
1.4690 +}
