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      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 #include <wtf/Forward.h>
     30 #include <wtf/HashMap.h>
     31 
     32 struct NPObject;
     33 typedef struct _NPVariant NPVariant;
     34 
     35 namespace JSC {
     36     class ExecState;
     37     class JSGlobalData;
     38     class JSGlobalObject;
     39     class JSObject;
     40     class JSValue;
     41 }
     42 
     43 namespace WebKit {
     44 
     45 class JSNPObject;
     46 class NPJSObject;
     47 class PluginView;
     48 
     49 // A per plug-in map of NPObjects that wrap JavaScript objects.
     50 class NPRuntimeObjectMap {
     51 public:
     52     explicit NPRuntimeObjectMap(PluginView*);
     53 
     54     class PluginProtector {
     55     public:
     56         explicit PluginProtector(NPRuntimeObjectMap* npRuntimeObjectMap);
     57         ~PluginProtector();
     58 
     59     private:
     60         RefPtr<PluginView> m_pluginView;
     61     };
     62 
     63     // Returns an NPObject that wraps the given JSObject object. If there is already an NPObject that wraps this JSObject, it will
     64     // retain it and return it.
     65     NPObject* getOrCreateNPObject(JSC::JSGlobalData&, JSC::JSObject*);
     66     void npJSObjectDestroyed(NPJSObject*);
     67 
     68     // Returns a JSObject object that wraps the given NPObject.
     69     JSC::JSObject* getOrCreateJSObject(JSC::JSGlobalObject*, NPObject*);
     70     void jsNPObjectDestroyed(JSNPObject*);
     71 
     72     void convertJSValueToNPVariant(JSC::ExecState*, JSC::JSValue, NPVariant&);
     73     JSC::JSValue convertNPVariantToJSValue(JSC::ExecState*, JSC::JSGlobalObject*, const NPVariant&);
     74 
     75     bool evaluate(NPObject*, const String& scriptString, NPVariant* result);
     76 
     77     // Called when the plug-in is destroyed. Will invalidate all the NPObjects.
     78     void invalidate();
     79 
     80     JSC::JSGlobalObject* globalObject() const;
     81     JSC::ExecState* globalExec() const;
     82 
     83     static void setGlobalException(const String& exceptionString);
     84     static void moveGlobalExceptionToExecState(JSC::ExecState*);
     85 
     86 private:
     87     PluginView* m_pluginView;
     88 
     89     HashMap<JSC::JSObject*, NPJSObject*> m_npJSObjects;
     90     HashMap<NPObject*, JSNPObject*> m_jsNPObjects;
     91 };
     92 
     93 } // namespace WebKit
     94 
     95 #endif // NPJSObjectWrapperMap_h
     96