forked from mirrors/gecko-dev
6ada67c323
And use it to avoid some pointer chases per the review comments of D32949. Differential Revision: https://phabricator.services.mozilla.com/D33288
485 lines
15 KiB
C++
485 lines
15 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/EventStates.h"
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#include "mozilla/dom/BindContext.h"
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#include "mozilla/dom/HTMLFormSubmission.h"
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#include "mozilla/dom/HTMLObjectElement.h"
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#include "mozilla/dom/HTMLObjectElementBinding.h"
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#include "mozilla/dom/ElementInlines.h"
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#include "mozilla/dom/WindowProxyHolder.h"
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#include "nsAttrValueInlines.h"
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#include "nsGkAtoms.h"
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#include "nsError.h"
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#include "mozilla/dom/Document.h"
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#include "nsIPluginDocument.h"
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#include "nsIObjectFrame.h"
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#include "nsNPAPIPluginInstance.h"
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#include "nsIWidget.h"
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#include "nsContentUtils.h"
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#ifdef XP_MACOSX
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# include "mozilla/EventDispatcher.h"
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# include "mozilla/dom/Event.h"
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# include "nsFocusManager.h"
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#endif
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namespace mozilla {
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namespace dom {
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HTMLObjectElement::HTMLObjectElement(
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
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FromParser aFromParser)
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: nsGenericHTMLFormElement(std::move(aNodeInfo), NS_FORM_OBJECT),
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mIsDoneAddingChildren(!aFromParser) {
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RegisterActivityObserver();
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SetIsNetworkCreated(aFromParser == FROM_PARSER_NETWORK);
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// <object> is always barred from constraint validation.
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SetBarredFromConstraintValidation(true);
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// By default we're in the loading state
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AddStatesSilently(NS_EVENT_STATE_LOADING);
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}
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HTMLObjectElement::~HTMLObjectElement() {
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#ifdef XP_MACOSX
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OnFocusBlurPlugin(this, false);
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#endif
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UnregisterActivityObserver();
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DestroyImageLoadingContent();
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}
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bool HTMLObjectElement::IsInteractiveHTMLContent(bool aIgnoreTabindex) const {
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return HasAttr(kNameSpaceID_None, nsGkAtoms::usemap) ||
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nsGenericHTMLFormElement::IsInteractiveHTMLContent(aIgnoreTabindex);
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}
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void HTMLObjectElement::AsyncEventRunning(AsyncEventDispatcher* aEvent) {
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nsImageLoadingContent::AsyncEventRunning(aEvent);
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}
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bool HTMLObjectElement::IsDoneAddingChildren() { return mIsDoneAddingChildren; }
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void HTMLObjectElement::DoneAddingChildren(bool aHaveNotified) {
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mIsDoneAddingChildren = true;
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// If we're already in a document, we need to trigger the load
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// Otherwise, BindToTree takes care of that.
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if (IsInComposedDoc()) {
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StartObjectLoad(aHaveNotified, false);
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}
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}
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NS_IMPL_CYCLE_COLLECTION_CLASS(HTMLObjectElement)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(HTMLObjectElement,
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nsGenericHTMLFormElement)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mValidity)
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nsObjectLoadingContent::Traverse(tmp, cb);
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(HTMLObjectElement,
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nsGenericHTMLFormElement)
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NS_IMPL_CYCLE_COLLECTION_UNLINK(mValidity)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_ISUPPORTS_CYCLE_COLLECTION_INHERITED(
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HTMLObjectElement, nsGenericHTMLFormElement, imgINotificationObserver,
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nsIRequestObserver, nsIStreamListener, nsFrameLoaderOwner,
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nsIObjectLoadingContent, nsIImageLoadingContent, nsIChannelEventSink,
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nsIConstraintValidation)
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NS_IMPL_ELEMENT_CLONE(HTMLObjectElement)
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#ifdef XP_MACOSX
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static nsIWidget* GetWidget(Element* aElement) {
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return nsContentUtils::WidgetForDocument(aElement->OwnerDoc());
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}
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Element* HTMLObjectElement::sLastFocused = nullptr; // Weak
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class PluginFocusSetter : public Runnable {
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public:
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PluginFocusSetter(nsIWidget* aWidget, Element* aElement)
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: Runnable("PluginFocusSetter"), mWidget(aWidget), mElement(aElement) {}
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NS_IMETHOD Run() override {
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if (mElement) {
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HTMLObjectElement::sLastFocused = mElement;
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bool value = true;
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mWidget->SetPluginFocused(value);
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} else if (!HTMLObjectElement::sLastFocused) {
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bool value = false;
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mWidget->SetPluginFocused(value);
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}
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return NS_OK;
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}
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private:
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nsCOMPtr<nsIWidget> mWidget;
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nsCOMPtr<Element> mElement;
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};
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void HTMLObjectElement::OnFocusBlurPlugin(Element* aElement, bool aFocus) {
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// In general we don't want to call nsIWidget::SetPluginFocused() for any
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// Element that doesn't have a plugin running. But if SetPluginFocused(true)
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// was just called for aElement while it had a plugin running, we want to
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// make sure nsIWidget::SetPluginFocused(false) gets called for it now, even
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// if aFocus is true.
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if (aFocus) {
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nsCOMPtr<nsIObjectLoadingContent> olc = do_QueryInterface(aElement);
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bool hasRunningPlugin = false;
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if (olc) {
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hasRunningPlugin =
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static_cast<nsObjectLoadingContent*>(olc.get())->HasRunningPlugin();
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}
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if (!hasRunningPlugin) {
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aFocus = false;
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}
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}
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if (aFocus || aElement == sLastFocused) {
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if (!aFocus) {
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sLastFocused = nullptr;
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}
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nsIWidget* widget = GetWidget(aElement);
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if (widget) {
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nsContentUtils::AddScriptRunner(
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new PluginFocusSetter(widget, aFocus ? aElement : nullptr));
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}
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}
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}
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void HTMLObjectElement::HandlePluginCrashed(Element* aElement) {
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OnFocusBlurPlugin(aElement, false);
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}
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void HTMLObjectElement::HandlePluginInstantiated(Element* aElement) {
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// If aElement is already focused when a plugin is instantiated, we need
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// to initiate a call to nsIWidget::SetPluginFocused(true). Otherwise
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// keyboard input won't work in a click-to-play plugin until aElement
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// loses focus and regains it.
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nsFocusManager* fm = nsFocusManager::GetFocusManager();
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if (fm && fm->GetFocusedElement() == aElement) {
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OnFocusBlurPlugin(aElement, true);
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}
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}
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void HTMLObjectElement::HandleFocusBlurPlugin(Element* aElement,
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WidgetEvent* aEvent) {
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if (!aEvent->IsTrusted()) {
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return;
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}
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switch (aEvent->mMessage) {
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case eFocus: {
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OnFocusBlurPlugin(aElement, true);
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break;
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}
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case eBlur: {
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OnFocusBlurPlugin(aElement, false);
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break;
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}
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default:
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break;
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}
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}
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NS_IMETHODIMP
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HTMLObjectElement::PostHandleEvent(EventChainPostVisitor& aVisitor) {
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HandleFocusBlurPlugin(this, aVisitor.mEvent);
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return NS_OK;
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}
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#endif // #ifdef XP_MACOSX
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nsresult HTMLObjectElement::BindToTree(BindContext& aContext,
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nsINode& aParent) {
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nsresult rv = nsGenericHTMLFormElement::BindToTree(aContext, aParent);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = nsObjectLoadingContent::BindToTree(aContext, aParent);
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NS_ENSURE_SUCCESS(rv, rv);
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// Don't kick off load from being bound to a plugin document - the plugin
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// document will call nsObjectLoadingContent::InitializeFromChannel() for the
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// initial load.
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if (IsInComposedDoc()) {
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nsCOMPtr<nsIPluginDocument> pluginDoc =
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do_QueryInterface(&aContext.OwnerDoc());
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// If we already have all the children, start the load.
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if (mIsDoneAddingChildren && !pluginDoc) {
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void (HTMLObjectElement::*start)() = &HTMLObjectElement::StartObjectLoad;
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nsContentUtils::AddScriptRunner(
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NewRunnableMethod("dom::HTMLObjectElement::BindToTree", this, start));
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}
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}
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return NS_OK;
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}
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void HTMLObjectElement::UnbindFromTree(bool aNullParent) {
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#ifdef XP_MACOSX
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// When a page is reloaded (when an Document's content is removed), the
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// focused element isn't necessarily sent an eBlur event. See
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// nsFocusManager::ContentRemoved(). This means that a widget may think it
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// still contains a focused plugin when it doesn't -- which in turn can
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// disable text input in the browser window. See bug 1137229.
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OnFocusBlurPlugin(this, false);
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#endif
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nsObjectLoadingContent::UnbindFromTree(aNullParent);
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nsGenericHTMLFormElement::UnbindFromTree(aNullParent);
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}
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nsresult HTMLObjectElement::AfterSetAttr(int32_t aNamespaceID, nsAtom* aName,
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const nsAttrValue* aValue,
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const nsAttrValue* aOldValue,
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nsIPrincipal* aSubjectPrincipal,
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bool aNotify) {
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nsresult rv = AfterMaybeChangeAttr(aNamespaceID, aName, aNotify);
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NS_ENSURE_SUCCESS(rv, rv);
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return nsGenericHTMLFormElement::AfterSetAttr(
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aNamespaceID, aName, aValue, aOldValue, aSubjectPrincipal, aNotify);
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}
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nsresult HTMLObjectElement::OnAttrSetButNotChanged(
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int32_t aNamespaceID, nsAtom* aName, const nsAttrValueOrString& aValue,
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bool aNotify) {
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nsresult rv = AfterMaybeChangeAttr(aNamespaceID, aName, aNotify);
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NS_ENSURE_SUCCESS(rv, rv);
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return nsGenericHTMLFormElement::OnAttrSetButNotChanged(aNamespaceID, aName,
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aValue, aNotify);
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}
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nsresult HTMLObjectElement::AfterMaybeChangeAttr(int32_t aNamespaceID,
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nsAtom* aName, bool aNotify) {
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if (aNamespaceID == kNameSpaceID_None) {
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// if aNotify is false, we are coming from the parser or some such place;
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// we'll get bound after all the attributes have been set, so we'll do the
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// object load from BindToTree/DoneAddingChildren.
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// Skip the LoadObject call in that case.
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// We also don't want to start loading the object when we're not yet in
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// a document, just in case that the caller wants to set additional
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// attributes before inserting the node into the document.
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if (aNotify && IsInComposedDoc() && mIsDoneAddingChildren &&
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aName == nsGkAtoms::data && !BlockEmbedOrObjectContentLoading()) {
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return LoadObject(aNotify, true);
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}
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}
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return NS_OK;
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}
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bool HTMLObjectElement::IsFocusableForTabIndex() {
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Document* doc = GetComposedDoc();
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if (!doc || doc->HasFlag(NODE_IS_EDITABLE)) {
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return false;
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}
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return IsEditableRoot() ||
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((Type() == eType_Document || Type() == eType_FakePlugin) &&
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nsContentUtils::IsSubDocumentTabbable(this));
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}
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bool HTMLObjectElement::IsHTMLFocusable(bool aWithMouse, bool* aIsFocusable,
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int32_t* aTabIndex) {
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// TODO: this should probably be managed directly by IsHTMLFocusable.
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// See bug 597242.
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Document* doc = GetComposedDoc();
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if (!doc || doc->HasFlag(NODE_IS_EDITABLE)) {
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if (aTabIndex) {
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*aTabIndex = TabIndex();
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}
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*aIsFocusable = false;
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return false;
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}
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// This method doesn't call nsGenericHTMLFormElement intentionally.
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// TODO: It should probably be changed when bug 597242 will be fixed.
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if (Type() == eType_Plugin || IsEditableRoot() ||
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((Type() == eType_Document || Type() == eType_FakePlugin) &&
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nsContentUtils::IsSubDocumentTabbable(this))) {
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// Has plugin content: let the plugin decide what to do in terms of
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// internal focus from mouse clicks
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if (aTabIndex) {
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*aTabIndex = TabIndex();
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}
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*aIsFocusable = true;
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return false;
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}
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// TODO: this should probably be managed directly by IsHTMLFocusable.
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// See bug 597242.
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const nsAttrValue* attrVal = mAttrs.GetAttr(nsGkAtoms::tabindex);
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*aIsFocusable = attrVal && attrVal->Type() == nsAttrValue::eInteger;
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if (aTabIndex && *aIsFocusable) {
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*aTabIndex = attrVal->GetIntegerValue();
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}
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return false;
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}
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nsIContent::IMEState HTMLObjectElement::GetDesiredIMEState() {
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if (Type() == eType_Plugin) {
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return IMEState(IMEState::PLUGIN);
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}
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return nsGenericHTMLFormElement::GetDesiredIMEState();
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}
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NS_IMETHODIMP
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HTMLObjectElement::Reset() { return NS_OK; }
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NS_IMETHODIMP
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HTMLObjectElement::SubmitNamesValues(HTMLFormSubmission* aFormSubmission) {
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nsAutoString name;
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if (!GetAttr(kNameSpaceID_None, nsGkAtoms::name, name)) {
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// No name, don't submit.
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return NS_OK;
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}
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nsIFrame* frame = GetPrimaryFrame();
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nsIObjectFrame* objFrame = do_QueryFrame(frame);
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if (!objFrame) {
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// No frame, nothing to submit.
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return NS_OK;
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}
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RefPtr<nsNPAPIPluginInstance> pi = objFrame->GetPluginInstance();
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if (!pi) {
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return NS_OK;
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}
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nsAutoString value;
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nsresult rv = pi->GetFormValue(value);
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NS_ENSURE_SUCCESS(rv, rv);
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return aFormSubmission->AddNameValuePair(name, value);
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}
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int32_t HTMLObjectElement::TabIndexDefault() {
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return IsFocusableForTabIndex() ? 0 : -1;
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}
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Nullable<WindowProxyHolder> HTMLObjectElement::GetContentWindow(
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nsIPrincipal& aSubjectPrincipal) {
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Document* doc = GetContentDocument(aSubjectPrincipal);
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if (doc) {
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nsPIDOMWindowOuter* win = doc->GetWindow();
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if (win) {
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return WindowProxyHolder(win->GetBrowsingContext());
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}
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}
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return nullptr;
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}
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bool HTMLObjectElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
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const nsAString& aValue,
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nsIPrincipal* aMaybeScriptedPrincipal,
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nsAttrValue& aResult) {
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if (aNamespaceID == kNameSpaceID_None) {
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if (aAttribute == nsGkAtoms::align) {
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return ParseAlignValue(aValue, aResult);
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}
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if (ParseImageAttribute(aAttribute, aValue, aResult)) {
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return true;
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}
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}
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return nsGenericHTMLFormElement::ParseAttribute(
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aNamespaceID, aAttribute, aValue, aMaybeScriptedPrincipal, aResult);
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}
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void HTMLObjectElement::MapAttributesIntoRule(
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const nsMappedAttributes* aAttributes, MappedDeclarations& aDecls) {
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nsGenericHTMLFormElement::MapImageAlignAttributeInto(aAttributes, aDecls);
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nsGenericHTMLFormElement::MapImageBorderAttributeInto(aAttributes, aDecls);
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nsGenericHTMLFormElement::MapImageMarginAttributeInto(aAttributes, aDecls);
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nsGenericHTMLFormElement::MapImageSizeAttributesInto(aAttributes, aDecls);
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nsGenericHTMLFormElement::MapCommonAttributesInto(aAttributes, aDecls);
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}
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NS_IMETHODIMP_(bool)
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HTMLObjectElement::IsAttributeMapped(const nsAtom* aAttribute) const {
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static const MappedAttributeEntry* const map[] = {
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sCommonAttributeMap,
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sImageMarginSizeAttributeMap,
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sImageBorderAttributeMap,
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sImageAlignAttributeMap,
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};
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return FindAttributeDependence(aAttribute, map);
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}
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nsMapRuleToAttributesFunc HTMLObjectElement::GetAttributeMappingFunction()
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const {
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return &MapAttributesIntoRule;
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}
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void HTMLObjectElement::StartObjectLoad(bool aNotify, bool aForce) {
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// BindToTree can call us asynchronously, and we may be removed from the tree
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// in the interim
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if (!IsInComposedDoc() || !OwnerDoc()->IsActive() ||
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BlockEmbedOrObjectContentLoading()) {
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return;
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}
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LoadObject(aNotify, aForce);
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SetIsNetworkCreated(false);
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}
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EventStates HTMLObjectElement::IntrinsicState() const {
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return nsGenericHTMLFormElement::IntrinsicState() | ObjectState();
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}
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uint32_t HTMLObjectElement::GetCapabilities() const {
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return nsObjectLoadingContent::GetCapabilities() | eFallbackIfClassIDPresent;
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}
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void HTMLObjectElement::DestroyContent() {
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nsObjectLoadingContent::DestroyContent();
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nsGenericHTMLFormElement::DestroyContent();
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}
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nsresult HTMLObjectElement::CopyInnerTo(Element* aDest) {
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nsresult rv = nsGenericHTMLFormElement::CopyInnerTo(aDest);
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NS_ENSURE_SUCCESS(rv, rv);
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if (aDest->OwnerDoc()->IsStaticDocument()) {
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CreateStaticClone(static_cast<HTMLObjectElement*>(aDest));
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}
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return rv;
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}
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JSObject* HTMLObjectElement::WrapNode(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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JS::Rooted<JSObject*> obj(
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aCx, HTMLObjectElement_Binding::Wrap(aCx, this, aGivenProto));
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if (!obj) {
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return nullptr;
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}
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SetupProtoChain(aCx, obj);
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return obj;
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}
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} // namespace dom
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} // namespace mozilla
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NS_IMPL_NS_NEW_HTML_ELEMENT_CHECK_PARSER(Object)
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