зеркало из https://github.com/mozilla/gecko-dev.git
120 строки
3.7 KiB
C++
120 строки
3.7 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 "ScriptElement.h"
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#include "ScriptLoader.h"
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#include "mozilla/BasicEvents.h"
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#include "mozilla/EventDispatcher.h"
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#include "mozilla/dom/Document.h"
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#include "mozilla/dom/Element.h"
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#include "nsContentUtils.h"
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#include "nsPresContext.h"
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#include "nsIParser.h"
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#include "nsGkAtoms.h"
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#include "nsContentSink.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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NS_IMETHODIMP
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ScriptElement::ScriptAvailable(nsresult aResult, nsIScriptElement* aElement,
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bool aIsInlineClassicScript, nsIURI* aURI,
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int32_t aLineNo) {
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if (!aIsInlineClassicScript && NS_FAILED(aResult)) {
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nsCOMPtr<nsIParser> parser = do_QueryReferent(mCreatorParser);
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if (parser) {
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parser->IncrementScriptNestingLevel();
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}
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nsresult rv = FireErrorEvent();
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if (parser) {
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parser->DecrementScriptNestingLevel();
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}
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return rv;
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}
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return NS_OK;
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}
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/* virtual */
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nsresult ScriptElement::FireErrorEvent() {
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nsCOMPtr<nsIContent> cont = do_QueryInterface((nsIScriptElement*)this);
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return nsContentUtils::DispatchTrustedEvent(
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cont->OwnerDoc(), cont, u"error"_ns, CanBubble::eNo, Cancelable::eNo);
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}
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NS_IMETHODIMP
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ScriptElement::ScriptEvaluated(nsresult aResult, nsIScriptElement* aElement,
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bool aIsInline) {
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nsresult rv = NS_OK;
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if (!aIsInline) {
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nsCOMPtr<nsIContent> cont = do_QueryInterface((nsIScriptElement*)this);
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RefPtr<nsPresContext> presContext =
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nsContentUtils::GetContextForContent(cont);
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nsEventStatus status = nsEventStatus_eIgnore;
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EventMessage message = NS_SUCCEEDED(aResult) ? eLoad : eLoadError;
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WidgetEvent event(true, message);
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// Load event doesn't bubble.
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event.mFlags.mBubbles = (message != eLoad);
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EventDispatcher::Dispatch(cont, presContext, &event, nullptr, &status);
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}
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return rv;
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}
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void ScriptElement::CharacterDataChanged(nsIContent* aContent,
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const CharacterDataChangeInfo&) {
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MaybeProcessScript();
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}
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void ScriptElement::AttributeChanged(Element* aElement, int32_t aNameSpaceID,
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nsAtom* aAttribute, int32_t aModType,
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const nsAttrValue* aOldValue) {
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MaybeProcessScript();
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}
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void ScriptElement::ContentAppended(nsIContent* aFirstNewContent) {
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MaybeProcessScript();
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}
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void ScriptElement::ContentInserted(nsIContent* aChild) {
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MaybeProcessScript();
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}
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bool ScriptElement::MaybeProcessScript() {
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nsCOMPtr<nsIContent> cont = do_QueryInterface((nsIScriptElement*)this);
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NS_ASSERTION(cont->DebugGetSlots()->mMutationObservers.Contains(this),
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"You forgot to add self as observer");
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if (mAlreadyStarted || !mDoneAddingChildren || !cont->GetComposedDoc() ||
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mMalformed || !HasScriptContent()) {
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return false;
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}
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Document* ownerDoc = cont->OwnerDoc();
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FreezeExecutionAttrs(ownerDoc);
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mAlreadyStarted = true;
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nsCOMPtr<nsIParser> parser = ((nsIScriptElement*)this)->GetCreatorParser();
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if (parser) {
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nsCOMPtr<nsIContentSink> sink = parser->GetContentSink();
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if (sink) {
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nsCOMPtr<Document> parserDoc = do_QueryInterface(sink->GetTarget());
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if (ownerDoc != parserDoc) {
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// Willful violation of HTML5 as of 2010-12-01
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return false;
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}
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}
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}
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RefPtr<ScriptLoader> loader = ownerDoc->ScriptLoader();
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return loader->ProcessScriptElement(this);
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}
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