1/* 2 * Copyright (C) 2010 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#ifndef NPJSObjectWrapperMap_h 27#define NPJSObjectWrapperMap_h 28 29#if ENABLE(NETSCAPE_PLUGIN_API) 30 31#include <heap/Weak.h> 32#include <heap/WeakInlines.h> 33#include <wtf/Forward.h> 34#include <wtf/HashMap.h> 35#include <wtf/RunLoop.h> 36 37struct NPObject; 38typedef struct _NPVariant NPVariant; 39 40namespace JSC { 41 class ExecState; 42 class VM; 43 class JSGlobalObject; 44 class JSObject; 45 class JSValue; 46} 47 48namespace WebKit { 49 50class JSNPObject; 51class NPJSObject; 52class PluginView; 53 54// A per plug-in map of NPObjects that wrap JavaScript objects. 55class NPRuntimeObjectMap : private JSC::WeakHandleOwner { 56public: 57 explicit NPRuntimeObjectMap(PluginView*); 58 59 class PluginProtector { 60 public: 61 explicit PluginProtector(NPRuntimeObjectMap* npRuntimeObjectMap); 62 ~PluginProtector(); 63 64 private: 65 RefPtr<PluginView> m_pluginView; 66 }; 67 68 // Returns an NPObject that wraps the given JSObject object. If there is already an NPObject that wraps this JSObject, it will 69 // retain it and return it. 70 NPObject* getOrCreateNPObject(JSC::VM&, JSC::JSObject*); 71 void npJSObjectDestroyed(NPJSObject*); 72 73 // Returns a JSObject object that wraps the given NPObject. 74 JSC::JSObject* getOrCreateJSObject(JSC::JSGlobalObject*, NPObject*); 75 void jsNPObjectDestroyed(JSNPObject*); 76 77 void convertJSValueToNPVariant(JSC::ExecState*, JSC::JSValue, NPVariant&); 78 JSC::JSValue convertNPVariantToJSValue(JSC::ExecState*, JSC::JSGlobalObject*, const NPVariant&); 79 80 bool evaluate(NPObject*, const String& scriptString, NPVariant* result); 81 82 // Called when the plug-in is destroyed. Will invalidate all the NPObjects. 83 void invalidate(); 84 85 JSC::JSGlobalObject* globalObject() const; 86 JSC::ExecState* globalExec() const; 87 88 static void setGlobalException(const String& exceptionString); 89 static void moveGlobalExceptionToExecState(JSC::ExecState*); 90 91private: 92 // WeakHandleOwner 93 virtual void finalize(JSC::Handle<JSC::Unknown>, void* context); 94 void addToInvalidationQueue(NPObject*); 95 void invalidateQueuedObjects(); 96 97 PluginView* m_pluginView; 98 HashMap<JSC::JSObject*, NPJSObject*> m_npJSObjects; 99 HashMap<NPObject*, JSC::Weak<JSNPObject>> m_jsNPObjects; 100 Vector<NPObject*> m_npObjectsToFinalize; 101 RunLoop::Timer<NPRuntimeObjectMap> m_finalizationTimer; 102}; 103 104} // namespace WebKit 105 106#endif // ENABLE(NETSCAPE_PLUGIN_API) 107 108#endif // NPJSObjectWrapperMap_h 109