forked from mirrors/gecko-dev
363a5143aa
If we have a creator parser, then we were a parser-inserted script and should presumably be able to set a valid insertion point when we run or fire our load/error events. For the error event case, we do this in nsScriptElement::ScriptAvailable, so that async error events due to things like bogus script URLs do not end up with a valid insertion point. For the load event case, we just do this in ScriptEvaluated directly. ScriptEvaluated is called while the scriptloader has our script set as the current parser-inserted script. But for the error event case we need to maintain that state around the ScriptAvailable call that will fire the event.
150 lines
4.5 KiB
C++
150 lines
4.5 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 "nsScriptElement.h"
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#include "mozilla/BasicEvents.h"
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#include "mozilla/EventDispatcher.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 "nsScriptLoader.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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nsScriptElement::ScriptAvailable(nsresult aResult,
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nsIScriptElement *aElement,
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bool aIsInline,
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nsIURI *aURI,
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int32_t aLineNo)
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{
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if (!aIsInline && NS_FAILED(aResult)) {
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nsCOMPtr<nsIParser> parser = do_QueryReferent(mCreatorParser);
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if (parser) {
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parser->PushDefinedInsertionPoint();
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}
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nsresult rv = FireErrorEvent();
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if (parser) {
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parser->PopDefinedInsertionPoint();
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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 */ nsresult
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nsScriptElement::FireErrorEvent()
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{
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nsCOMPtr<nsIContent> cont =
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do_QueryInterface((nsIScriptElement*) this);
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return nsContentUtils::DispatchTrustedEvent(cont->OwnerDoc(),
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cont,
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NS_LITERAL_STRING("error"),
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false /* bubbles */,
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false /* cancelable */);
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}
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NS_IMETHODIMP
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nsScriptElement::ScriptEvaluated(nsresult aResult,
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nsIScriptElement *aElement,
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bool aIsInline)
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{
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nsresult rv = NS_OK;
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if (!aIsInline) {
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nsCOMPtr<nsIContent> cont =
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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
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nsScriptElement::CharacterDataChanged(nsIDocument *aDocument,
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nsIContent* aContent,
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CharacterDataChangeInfo* aInfo)
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{
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MaybeProcessScript();
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}
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void
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nsScriptElement::AttributeChanged(nsIDocument* aDocument,
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Element* aElement,
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int32_t aNameSpaceID,
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nsIAtom* aAttribute,
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int32_t aModType,
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const nsAttrValue* aOldValue)
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{
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MaybeProcessScript();
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}
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void
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nsScriptElement::ContentAppended(nsIDocument* aDocument,
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nsIContent* aContainer,
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nsIContent* aFirstNewContent,
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int32_t aNewIndexInContainer)
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{
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MaybeProcessScript();
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}
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void
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nsScriptElement::ContentInserted(nsIDocument *aDocument,
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nsIContent* aContainer,
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nsIContent* aChild,
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int32_t aIndexInContainer)
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{
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MaybeProcessScript();
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}
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bool
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nsScriptElement::MaybeProcessScript()
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{
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nsCOMPtr<nsIContent> cont =
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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 ||
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!cont->GetComposedDoc() || mMalformed || !HasScriptContent()) {
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return false;
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}
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FreezeUriAsyncDefer();
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mAlreadyStarted = true;
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nsIDocument* ownerDoc = cont->OwnerDoc();
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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<nsIDocument> 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<nsScriptLoader> loader = ownerDoc->ScriptLoader();
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return loader->ProcessScriptElement(this);
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}
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