89 lines
3.4 KiB
C++
89 lines
3.4 KiB
C++
/*
|
|
* Copyright (C) 2010 Google, Inc. All Rights Reserved.
|
|
* Copyright (C) 2010-2017 Apple Inc. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
|
|
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
|
|
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "PendingScript.h"
|
|
#include <wtf/Deque.h>
|
|
#include <wtf/WeakPtr.h>
|
|
#include <wtf/text/TextPosition.h>
|
|
|
|
namespace WebCore {
|
|
|
|
class Document;
|
|
class Frame;
|
|
class HTMLScriptRunnerHost;
|
|
class ScriptSourceCode;
|
|
|
|
class HTMLScriptRunner {
|
|
WTF_MAKE_FAST_ALLOCATED;
|
|
public:
|
|
HTMLScriptRunner(Document&, HTMLScriptRunnerHost&);
|
|
~HTMLScriptRunner();
|
|
|
|
void detach();
|
|
|
|
// Processes the passed in script and any pending scripts if possible.
|
|
void execute(Ref<ScriptElement>&&, const TextPosition& scriptStartPosition);
|
|
|
|
void executeScriptsWaitingForLoad(PendingScript&);
|
|
bool hasScriptsWaitingForStylesheets() const { return m_hasScriptsWaitingForStylesheets; }
|
|
void executeScriptsWaitingForStylesheets();
|
|
bool executeScriptsWaitingForParsing();
|
|
|
|
bool hasParserBlockingScript() const;
|
|
bool isExecutingScript() const { return !!m_scriptNestingLevel; }
|
|
|
|
private:
|
|
Frame* frame() const;
|
|
|
|
void executePendingScriptAndDispatchEvent(PendingScript&);
|
|
void executeParsingBlockingScripts();
|
|
|
|
void requestParsingBlockingScript(ScriptElement&);
|
|
void requestDeferredScript(ScriptElement&);
|
|
|
|
void runScript(ScriptElement&, const TextPosition& scriptStartPosition);
|
|
|
|
void watchForLoad(PendingScript&);
|
|
void stopWatchingForLoad(PendingScript&);
|
|
bool isPendingScriptReady(const PendingScript&);
|
|
|
|
WeakPtr<Document> m_document;
|
|
HTMLScriptRunnerHost& m_host;
|
|
RefPtr<PendingScript> m_parserBlockingScript;
|
|
Deque<Ref<PendingScript>> m_scriptsToExecuteAfterParsing; // http://www.whatwg.org/specs/web-apps/current-work/#list-of-scripts-that-will-execute-when-the-document-has-finished-parsing
|
|
unsigned m_scriptNestingLevel;
|
|
|
|
// We only want stylesheet loads to trigger script execution if script
|
|
// execution is currently stopped due to stylesheet loads, otherwise we'd
|
|
// cause nested script execution when parsing <style> tags since </style>
|
|
// tags can cause Document to call executeScriptsWaitingForStylesheets.
|
|
bool m_hasScriptsWaitingForStylesheets;
|
|
};
|
|
|
|
} // namespace WebCore
|