15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 2010 Google, Inc. All Rights Reserved. 35c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Redistribution and use in source and binary forms, with or without 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * modification, are permitted provided that the following conditions 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * are met: 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 1. Redistributions of source code must retain the above copyright 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer. 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 2. Redistributions in binary form must reproduce the above copyright 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer in the 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * documentation and/or other materials provided with the distribution. 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2302772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#ifndef HTMLScriptRunner_h 275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define HTMLScriptRunner_h 285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2953e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "core/dom/PendingScript.h" 30f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles)#include "core/fetch/ResourceClient.h" 31f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles)#include "platform/heap/Handle.h" 32e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch#include "wtf/Deque.h" 33e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch#include "wtf/PassRefPtr.h" 34e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch#include "wtf/text/TextPosition.h" 355c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 36c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)namespace blink { 375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 38fff8884795cb540f87cf6e6d67b629519b00eb8bBen Murdochclass Resource; 393c9e4aeaee9f9b0a9a814da07bcb33319c7ea363Ben Murdochclass ScriptResource; 405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)class Document; 415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)class Element; 42d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles)class LocalFrame; 435c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)class HTMLScriptRunnerHost; 445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)class ScriptSourceCode; 455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 467242dc3dbeb210b5e876a3c42d1ec1a667fc621aPrimiano Tucciclass HTMLScriptRunner FINAL : public NoBaseWillBeGarbageCollectedFinalized<HTMLScriptRunner>, private ScriptResourceClient { 47f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) WTF_MAKE_NONCOPYABLE(HTMLScriptRunner); WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED; 485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)public: 49f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) static PassOwnPtrWillBeRawPtr<HTMLScriptRunner> create(Document* document, HTMLScriptRunnerHost* host) 505c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) { 51f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) return adoptPtrWillBeNoop(new HTMLScriptRunner(document, host)); 525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 535c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ~HTMLScriptRunner(); 545c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 555c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void detach(); 565c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // Processes the passed in script and any pending scripts if possible. 58f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) void execute(PassRefPtrWillBeRawPtr<Element> scriptToProcess, const TextPosition& scriptStartPosition); 595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 60fff8884795cb540f87cf6e6d67b629519b00eb8bBen Murdoch void executeScriptsWaitingForLoad(Resource*); 615267f701546148b83dfbe1d151cb184385bb5c22Torne (Richard Coles) bool hasScriptsWaitingForResources() const { return m_hasScriptsWaitingForResources; } 625267f701546148b83dfbe1d151cb184385bb5c22Torne (Richard Coles) void executeScriptsWaitingForResources(); 635c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) bool executeScriptsWaitingForParsing(); 645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 655c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) bool hasParserBlockingScript() const; 665c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) bool isExecutingScript() const { return !!m_scriptNestingLevel; } 675c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 68f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) // ResourceClient 69f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) virtual void notifyFinished(Resource*) OVERRIDE; 70f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) 71f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) void trace(Visitor*); 72f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) 735c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)private: 745c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) HTMLScriptRunner(Document*, HTMLScriptRunnerHost*); 755c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 765c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void executeParsingBlockingScript(); 777242dc3dbeb210b5e876a3c42d1ec1a667fc621aPrimiano Tucci void executePendingScriptAndDispatchEvent(PendingScript&, PendingScript::Type); 785c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void executeParsingBlockingScripts(); 795c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 80d6cdb82654e8f3343a693ca752d5c4cee0324e17Torne (Richard Coles) void requestParsingBlockingScript(Element*); 81d6cdb82654e8f3343a693ca752d5c4cee0324e17Torne (Richard Coles) void requestDeferredScript(Element*); 82d6cdb82654e8f3343a693ca752d5c4cee0324e17Torne (Richard Coles) bool requestPendingScript(PendingScript&, Element*) const; 835c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 845c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) void runScript(Element*, const TextPosition& scriptStartPosition); 855c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 865c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) bool isPendingScriptReady(const PendingScript&); 875c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 88f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) RawPtrWillBeMember<Document> m_document; 89f6b7aed3f7ce69aca0d7a032d144cbd088b04393Torne (Richard Coles) RawPtrWillBeMember<HTMLScriptRunnerHost> m_host; 905c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) PendingScript m_parserBlockingScript; 915c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) Deque<PendingScript> m_scriptsToExecuteAfterParsing; // http://www.whatwg.org/specs/web-apps/current-work/#list-of-scripts-that-will-execute-when-the-document-has-finished-parsing 925c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) unsigned m_scriptNestingLevel; 935c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 945c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // We only want stylesheet loads to trigger script execution if script 955c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // execution is currently stopped due to stylesheet loads, otherwise we'd 965c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // cause nested script execution when parsing <style> tags since </style> 975267f701546148b83dfbe1d151cb184385bb5c22Torne (Richard Coles) // tags can cause Document to call executeScriptsWaitingForResources. 985267f701546148b83dfbe1d151cb184385bb5c22Torne (Richard Coles) bool m_hasScriptsWaitingForResources; 997242dc3dbeb210b5e876a3c42d1ec1a667fc621aPrimiano Tucci 1007242dc3dbeb210b5e876a3c42d1ec1a667fc621aPrimiano Tucci // For tracking the times between script load and compilation, we need to 1017242dc3dbeb210b5e876a3c42d1ec1a667fc621aPrimiano Tucci // know whether a parser blocking script was loaded previously, or whether 1027242dc3dbeb210b5e876a3c42d1ec1a667fc621aPrimiano Tucci // it's really loaded when requested. 1037242dc3dbeb210b5e876a3c42d1ec1a667fc621aPrimiano Tucci bool m_parserBlockingScriptAlreadyLoaded; 1045c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)}; 1055c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1065c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 1075c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1085c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif 109