michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "nsFileControlFrame.h"
michael@0: 
michael@0: #include "nsGkAtoms.h"
michael@0: #include "nsCOMPtr.h"
michael@0: #include "nsIDocument.h"
michael@0: #include "nsINodeInfo.h"
michael@0: #include "mozilla/dom/Element.h"
michael@0: #include "mozilla/dom/DataTransfer.h"
michael@0: #include "mozilla/dom/HTMLButtonElement.h"
michael@0: #include "mozilla/dom/HTMLInputElement.h"
michael@0: #include "nsNodeInfoManager.h"
michael@0: #include "nsContentCreatorFunctions.h"
michael@0: #include "nsContentUtils.h"
michael@0: #include "mozilla/EventStates.h"
michael@0: #include "mozilla/dom/DOMStringList.h"
michael@0: #include "nsIDOMDragEvent.h"
michael@0: #include "nsIDOMFileList.h"
michael@0: #include "nsContentList.h"
michael@0: #include "nsIDOMMutationEvent.h"
michael@0: #include "nsTextNode.h"
michael@0: 
michael@0: using namespace mozilla;
michael@0: using namespace mozilla::dom;
michael@0: 
michael@0: nsIFrame*
michael@0: NS_NewFileControlFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
michael@0: {
michael@0:   return new (aPresShell) nsFileControlFrame(aContext);
michael@0: }
michael@0: 
michael@0: NS_IMPL_FRAMEARENA_HELPERS(nsFileControlFrame)
michael@0: 
michael@0: nsFileControlFrame::nsFileControlFrame(nsStyleContext* aContext)
michael@0:   : nsBlockFrame(aContext)
michael@0: {
michael@0:   AddStateBits(NS_BLOCK_FLOAT_MGR);
michael@0: }
michael@0: 
michael@0: 
michael@0: void
michael@0: nsFileControlFrame::Init(nsIContent* aContent,
michael@0:                          nsIFrame*   aParent,
michael@0:                          nsIFrame*   aPrevInFlow)
michael@0: {
michael@0:   nsBlockFrame::Init(aContent, aParent, aPrevInFlow);
michael@0: 
michael@0:   mMouseListener = new DnDListener(this);
michael@0: }
michael@0: 
michael@0: void
michael@0: nsFileControlFrame::DestroyFrom(nsIFrame* aDestructRoot)
michael@0: {
michael@0:   ENSURE_TRUE(mContent);
michael@0: 
michael@0:   // Remove the events.
michael@0:   if (mContent) {
michael@0:     mContent->RemoveSystemEventListener(NS_LITERAL_STRING("drop"),
michael@0:                                         mMouseListener, false);
michael@0:     mContent->RemoveSystemEventListener(NS_LITERAL_STRING("dragover"),
michael@0:                                         mMouseListener, false);
michael@0:   }
michael@0: 
michael@0:   nsContentUtils::DestroyAnonymousContent(&mTextContent);
michael@0:   nsContentUtils::DestroyAnonymousContent(&mBrowse);
michael@0: 
michael@0:   mMouseListener->ForgetFrame();
michael@0:   nsBlockFrame::DestroyFrom(aDestructRoot);
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsFileControlFrame::CreateAnonymousContent(nsTArray<ContentInfo>& aElements)
michael@0: {
michael@0:   nsCOMPtr<nsIDocument> doc = mContent->GetDocument();
michael@0: 
michael@0:   // Create and setup the file picking button.
michael@0:   mBrowse = doc->CreateHTMLElement(nsGkAtoms::button);
michael@0:   // NOTE: SetIsNativeAnonymousRoot() has to be called before setting any
michael@0:   // attribute.
michael@0:   mBrowse->SetIsNativeAnonymousRoot();
michael@0:   mBrowse->SetAttr(kNameSpaceID_None, nsGkAtoms::type,
michael@0:                    NS_LITERAL_STRING("button"), false);
michael@0: 
michael@0:   // Set the file picking button text depending on the current locale.
michael@0:   nsXPIDLString buttonTxt;
michael@0:   nsContentUtils::GetLocalizedString(nsContentUtils::eFORMS_PROPERTIES,
michael@0:                                      "Browse", buttonTxt);
michael@0: 
michael@0:   // Set the browse button text. It's a bit of a pain to do because we want to
michael@0:   // make sure we are not notifying.
michael@0:   nsRefPtr<nsTextNode> textContent =
michael@0:     new nsTextNode(mBrowse->NodeInfo()->NodeInfoManager());
michael@0: 
michael@0:   textContent->SetText(buttonTxt, false);
michael@0: 
michael@0:   nsresult rv = mBrowse->AppendChildTo(textContent, false);
michael@0:   NS_ENSURE_SUCCESS(rv, rv);
michael@0: 
michael@0:   // Make sure access key and tab order for the element actually redirect to the
michael@0:   // file picking button.
michael@0:   nsRefPtr<HTMLInputElement> fileContent = HTMLInputElement::FromContentOrNull(mContent);
michael@0:   nsRefPtr<HTMLButtonElement> browseControl = HTMLButtonElement::FromContentOrNull(mBrowse);
michael@0: 
michael@0:   nsAutoString accessKey;
michael@0:   fileContent->GetAccessKey(accessKey);
michael@0:   browseControl->SetAccessKey(accessKey);
michael@0: 
michael@0:   int32_t tabIndex;
michael@0:   fileContent->GetTabIndex(&tabIndex);
michael@0:   browseControl->SetTabIndex(tabIndex);
michael@0: 
michael@0:   if (!aElements.AppendElement(mBrowse)) {
michael@0:     return NS_ERROR_OUT_OF_MEMORY;
michael@0:   }
michael@0: 
michael@0:   // Create and setup the text showing the selected files.
michael@0:   nsCOMPtr<nsINodeInfo> nodeInfo;
michael@0:   nodeInfo = doc->NodeInfoManager()->GetNodeInfo(nsGkAtoms::label, nullptr,
michael@0:                                                  kNameSpaceID_XUL,
michael@0:                                                  nsIDOMNode::ELEMENT_NODE);
michael@0:   NS_TrustedNewXULElement(getter_AddRefs(mTextContent), nodeInfo.forget());
michael@0:   // NOTE: SetIsNativeAnonymousRoot() has to be called before setting any
michael@0:   // attribute.
michael@0:   mTextContent->SetIsNativeAnonymousRoot();
michael@0:   mTextContent->SetAttr(kNameSpaceID_None, nsGkAtoms::crop,
michael@0:                         NS_LITERAL_STRING("center"), false);
michael@0: 
michael@0:   // Update the displayed text to reflect the current element's value.
michael@0:   nsAutoString value;
michael@0:   HTMLInputElement::FromContent(mContent)->GetDisplayFileName(value);
michael@0:   UpdateDisplayedValue(value, false);
michael@0: 
michael@0:   if (!aElements.AppendElement(mTextContent)) {
michael@0:     return NS_ERROR_OUT_OF_MEMORY;
michael@0:   }
michael@0: 
michael@0:   // We should be able to interact with the element by doing drag and drop.
michael@0:   mContent->AddSystemEventListener(NS_LITERAL_STRING("drop"),
michael@0:                                    mMouseListener, false);
michael@0:   mContent->AddSystemEventListener(NS_LITERAL_STRING("dragover"),
michael@0:                                    mMouseListener, false);
michael@0: 
michael@0:   SyncDisabledState();
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: void
michael@0: nsFileControlFrame::AppendAnonymousContentTo(nsBaseContentList& aElements,
michael@0:                                              uint32_t aFilter)
michael@0: {
michael@0:   aElements.MaybeAppendElement(mBrowse);
michael@0:   aElements.MaybeAppendElement(mTextContent);
michael@0: }
michael@0: 
michael@0: NS_QUERYFRAME_HEAD(nsFileControlFrame)
michael@0:   NS_QUERYFRAME_ENTRY(nsIAnonymousContentCreator)
michael@0:   NS_QUERYFRAME_ENTRY(nsIFormControlFrame)
michael@0: NS_QUERYFRAME_TAIL_INHERITING(nsBlockFrame)
michael@0: 
michael@0: void 
michael@0: nsFileControlFrame::SetFocus(bool aOn, bool aRepaint)
michael@0: {
michael@0: }
michael@0: 
michael@0: /**
michael@0:  * This is called when we receive a drop or a dragover.
michael@0:  */
michael@0: NS_IMETHODIMP
michael@0: nsFileControlFrame::DnDListener::HandleEvent(nsIDOMEvent* aEvent)
michael@0: {
michael@0:   NS_ASSERTION(mFrame, "We should have been unregistered");
michael@0: 
michael@0:   bool defaultPrevented = false;
michael@0:   aEvent->GetDefaultPrevented(&defaultPrevented);
michael@0:   if (defaultPrevented) {
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIDOMDragEvent> dragEvent = do_QueryInterface(aEvent);
michael@0:   if (!dragEvent || !IsValidDropData(dragEvent)) {
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   nsAutoString eventType;
michael@0:   aEvent->GetType(eventType);
michael@0:   if (eventType.EqualsLiteral("dragover")) {
michael@0:     // Prevent default if we can accept this drag data
michael@0:     aEvent->PreventDefault();
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   if (eventType.EqualsLiteral("drop")) {
michael@0:     aEvent->StopPropagation();
michael@0:     aEvent->PreventDefault();
michael@0: 
michael@0:     nsIContent* content = mFrame->GetContent();
michael@0:     NS_ASSERTION(content, "The frame has no content???");
michael@0: 
michael@0:     HTMLInputElement* inputElement = HTMLInputElement::FromContent(content);
michael@0:     NS_ASSERTION(inputElement, "No input element for this file upload control frame!");
michael@0: 
michael@0:     nsCOMPtr<nsIDOMDataTransfer> dataTransfer;
michael@0:     dragEvent->GetDataTransfer(getter_AddRefs(dataTransfer));
michael@0: 
michael@0:     nsCOMPtr<nsIDOMFileList> fileList;
michael@0:     dataTransfer->GetFiles(getter_AddRefs(fileList));
michael@0: 
michael@0:     inputElement->SetFiles(fileList, true);
michael@0:     nsContentUtils::DispatchTrustedEvent(content->OwnerDoc(), content,
michael@0:                                          NS_LITERAL_STRING("change"), true,
michael@0:                                          false);
michael@0:   }
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: /* static */ bool
michael@0: nsFileControlFrame::DnDListener::IsValidDropData(nsIDOMDragEvent* aEvent)
michael@0: {
michael@0:   nsCOMPtr<nsIDOMDataTransfer> domDataTransfer;
michael@0:   aEvent->GetDataTransfer(getter_AddRefs(domDataTransfer));
michael@0:   nsCOMPtr<DataTransfer> dataTransfer = do_QueryInterface(domDataTransfer);
michael@0:   NS_ENSURE_TRUE(dataTransfer, false);
michael@0: 
michael@0:   // We only support dropping files onto a file upload control
michael@0:   nsRefPtr<DOMStringList> types = dataTransfer->Types();
michael@0:   return types->Contains(NS_LITERAL_STRING("Files"));
michael@0: }
michael@0: 
michael@0: nscoord
michael@0: nsFileControlFrame::GetMinWidth(nsRenderingContext *aRenderingContext)
michael@0: {
michael@0:   nscoord result;
michael@0:   DISPLAY_MIN_WIDTH(this, result);
michael@0: 
michael@0:   // Our min width is our pref width
michael@0:   result = GetPrefWidth(aRenderingContext);
michael@0:   return result;
michael@0: }
michael@0: 
michael@0: void
michael@0: nsFileControlFrame::SyncDisabledState()
michael@0: {
michael@0:   EventStates eventStates = mContent->AsElement()->State();
michael@0:   if (eventStates.HasState(NS_EVENT_STATE_DISABLED)) {
michael@0:     mBrowse->SetAttr(kNameSpaceID_None, nsGkAtoms::disabled, EmptyString(),
michael@0:                      true);
michael@0:   } else {
michael@0:     mBrowse->UnsetAttr(kNameSpaceID_None, nsGkAtoms::disabled, true);
michael@0:   }
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsFileControlFrame::AttributeChanged(int32_t  aNameSpaceID,
michael@0:                                      nsIAtom* aAttribute,
michael@0:                                      int32_t  aModType)
michael@0: {
michael@0:   if (aNameSpaceID == kNameSpaceID_None && aAttribute == nsGkAtoms::tabindex) {
michael@0:     if (aModType == nsIDOMMutationEvent::REMOVAL) {
michael@0:       mBrowse->UnsetAttr(aNameSpaceID, aAttribute, true);
michael@0:     } else {
michael@0:       nsAutoString value;
michael@0:       mContent->GetAttr(aNameSpaceID, aAttribute, value);
michael@0:       mBrowse->SetAttr(aNameSpaceID, aAttribute, value, true);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   return nsBlockFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
michael@0: }
michael@0: 
michael@0: void
michael@0: nsFileControlFrame::ContentStatesChanged(EventStates aStates)
michael@0: {
michael@0:   if (aStates.HasState(NS_EVENT_STATE_DISABLED)) {
michael@0:     nsContentUtils::AddScriptRunner(new SyncDisabledStateEvent(this));
michael@0:   }
michael@0: }
michael@0: 
michael@0: #ifdef DEBUG_FRAME_DUMP
michael@0: nsresult
michael@0: nsFileControlFrame::GetFrameName(nsAString& aResult) const
michael@0: {
michael@0:   return MakeFrameName(NS_LITERAL_STRING("FileControl"), aResult);
michael@0: }
michael@0: #endif
michael@0: 
michael@0: void
michael@0: nsFileControlFrame::UpdateDisplayedValue(const nsAString& aValue, bool aNotify)
michael@0: {
michael@0:   mTextContent->SetAttr(kNameSpaceID_None, nsGkAtoms::value, aValue, aNotify);
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsFileControlFrame::SetFormProperty(nsIAtom* aName,
michael@0:                                     const nsAString& aValue)
michael@0: {
michael@0:   if (nsGkAtoms::value == aName) {
michael@0:     UpdateDisplayedValue(aValue, true);
michael@0:   }
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: void
michael@0: nsFileControlFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
michael@0:                                      const nsRect&           aDirtyRect,
michael@0:                                      const nsDisplayListSet& aLists)
michael@0: {
michael@0:   BuildDisplayListForInline(aBuilder, aDirtyRect, aLists);
michael@0: }
michael@0: 
michael@0: #ifdef ACCESSIBILITY
michael@0: a11y::AccType
michael@0: nsFileControlFrame::AccessibleType()
michael@0: {
michael@0:   return a11y::eHTMLFileInputType;
michael@0: }
michael@0: #endif
michael@0: 
michael@0: ////////////////////////////////////////////////////////////
michael@0: // Mouse listener implementation
michael@0: 
michael@0: NS_IMPL_ISUPPORTS(nsFileControlFrame::MouseListener,
michael@0:                   nsIDOMEventListener)