[V8] Remove V8Proxy.{h,cpp}
[WebKit-https.git] / Source / WebCore / bindings / v8 / V8DOMWrapper.h
1 /*
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5  * modification, are permitted provided that the following conditions are
6  * met:
7  * 
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9  * notice, this list of conditions and the following disclaimer.
10  *     * Redistributions in binary form must reproduce the above
11  * copyright notice, this list of conditions and the following disclaimer
12  * in the documentation and/or other materials provided with the
13  * distribution.
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15  * contributors may be used to endorse or promote products derived from
16  * this software without specific prior written permission.
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19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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29  */
30
31 #ifndef V8DOMWrapper_h
32 #define V8DOMWrapper_h
33
34 #include "DOMDataStore.h"
35 #include "Event.h"
36 #include "IsolatedWorld.h"
37 #include "Node.h"
38 #include "NodeFilter.h"
39 #include "PlatformString.h"
40 #include "V8CustomXPathNSResolver.h"
41 #include "V8DOMMap.h"
42 #include "V8IsolatedContext.h"
43 #include "V8Utilities.h"
44 #include "WrapperTypeInfo.h"
45 #include <v8.h>
46 #include <wtf/MainThread.h>
47 #include <wtf/PassRefPtr.h>
48
49 namespace WebCore {
50
51     class DOMWindow;
52     class EventTarget;
53     class Frame;
54     class Node;
55     class V8PerContextData;
56     class WorkerContext;
57
58     enum ListenerLookupType {
59         ListenerFindOnly,
60         ListenerFindOrCreate,
61     };
62
63     class V8DOMWrapper {
64     public:
65 #ifndef NDEBUG
66         // Checks if a v8 value can be a DOM wrapper
67         static bool maybeDOMWrapper(v8::Handle<v8::Value>);
68 #endif
69
70         // Sets contents of a DOM wrapper.
71         static void setDOMWrapper(v8::Handle<v8::Object> object, WrapperTypeInfo* type, void* cptr)
72         {
73             ASSERT(object->InternalFieldCount() >= 2);
74             object->SetPointerInInternalField(v8DOMWrapperObjectIndex, cptr);
75             object->SetPointerInInternalField(v8DOMWrapperTypeIndex, type);
76         }
77
78         static v8::Handle<v8::Object> lookupDOMWrapper(v8::Handle<v8::FunctionTemplate> functionTemplate, v8::Handle<v8::Object> object)
79         {
80             return object.IsEmpty() ? object : object->FindInstanceInPrototypeChain(functionTemplate);
81         }
82
83         static WrapperTypeInfo* domWrapperType(v8::Handle<v8::Object>);
84
85         static v8::Handle<v8::Value> convertEventTargetToV8Object(PassRefPtr<EventTarget> eventTarget, v8::Isolate* isolate = 0)
86         {
87             return convertEventTargetToV8Object(eventTarget.get(), isolate);
88         }
89
90         static v8::Handle<v8::Value> convertEventTargetToV8Object(EventTarget*, v8::Isolate* = 0);
91
92         static PassRefPtr<EventListener> getEventListener(v8::Local<v8::Value> value, bool isAttribute, ListenerLookupType lookup);
93
94         // Wrap JS node filter in C++.
95         static PassRefPtr<NodeFilter> wrapNativeNodeFilter(v8::Handle<v8::Value>);
96
97         static v8::Local<v8::Function> constructorForType(WrapperTypeInfo*, DOMWindow*);
98 #if ENABLE(WORKERS)
99         static v8::Local<v8::Function> constructorForType(WrapperTypeInfo*, WorkerContext*);
100 #endif
101
102         template<typename T>
103         static v8::Persistent<v8::Object> setJSWrapperForDOMObject(PassRefPtr<T>, v8::Handle<v8::Object>, v8::Isolate* = 0);
104         template<typename T>
105         static v8::Persistent<v8::Object> setJSWrapperForActiveDOMObject(PassRefPtr<T>, v8::Handle<v8::Object>, v8::Isolate* = 0);
106         static v8::Persistent<v8::Object> setJSWrapperForDOMNode(PassRefPtr<Node>, v8::Handle<v8::Object>, v8::Isolate* = 0);
107         static v8::Persistent<v8::Object> setJSWrapperForActiveDOMNode(PassRefPtr<Node>, v8::Handle<v8::Object>, v8::Isolate* = 0);
108
109         static bool isValidDOMObject(v8::Handle<v8::Value>);
110
111         // Check whether a V8 value is a wrapper of type |classType|.
112         static bool isWrapperOfType(v8::Handle<v8::Value>, WrapperTypeInfo*);
113
114         // Proper object lifetime support.
115         //
116         // Helper functions to make sure the child object stays alive
117         // while the parent is alive. Using the name more than once
118         // overwrites previous references making it possible to free
119         // old children.
120         static void setNamedHiddenReference(v8::Handle<v8::Object> parent, const char* name, v8::Handle<v8::Value> child);
121         static void setNamedHiddenWindowReference(Frame*, const char*, v8::Handle<v8::Value>);
122
123         static v8::Local<v8::Object> instantiateV8Object(Frame*, WrapperTypeInfo*, void*);
124
125         static v8::Handle<v8::Object> getCachedWrapper(Node* node)
126         {
127             ASSERT(isMainThread());
128             if (LIKELY(!IsolatedWorld::count())) {
129                 v8::Persistent<v8::Object>* wrapper = node->wrapper();
130                 if (LIKELY(!!wrapper))
131                     return *wrapper;
132             }
133
134             V8IsolatedContext* context = V8IsolatedContext::getEntered();
135             if (LIKELY(!context)) {
136                 v8::Persistent<v8::Object>* wrapper = node->wrapper();
137                 if (!wrapper)
138                     return v8::Handle<v8::Object>();
139                 return *wrapper;
140             }
141             DOMDataStore* store = context->world()->domDataStore();
142             DOMNodeMapping& domNodeMap = node->isActiveNode() ? store->activeDomNodeMap() : store->domNodeMap();
143             return domNodeMap.get(node);
144         }
145     private:
146 #if ENABLE(WORKERS)
147         static V8PerContextData* perContextData(WorkerContext*);
148 #endif
149     };
150
151     template<typename T>
152     v8::Persistent<v8::Object> V8DOMWrapper::setJSWrapperForDOMObject(PassRefPtr<T> object, v8::Handle<v8::Object> wrapper, v8::Isolate* isolate)
153     {
154         v8::Persistent<v8::Object> wrapperHandle = v8::Persistent<v8::Object>::New(wrapper);
155         ASSERT(maybeDOMWrapper(wrapperHandle));
156         ASSERT(!domWrapperType(wrapperHandle)->toActiveDOMObjectFunction);
157         getDOMObjectMap(isolate).set(object.leakRef(), wrapperHandle);
158         return wrapperHandle;
159     }
160
161     template<typename T>
162     v8::Persistent<v8::Object> V8DOMWrapper::setJSWrapperForActiveDOMObject(PassRefPtr<T> object, v8::Handle<v8::Object> wrapper, v8::Isolate* isolate)
163     {
164         v8::Persistent<v8::Object> wrapperHandle = v8::Persistent<v8::Object>::New(wrapper);
165         ASSERT(maybeDOMWrapper(wrapperHandle));
166         ASSERT(domWrapperType(wrapperHandle)->toActiveDOMObjectFunction);
167         getActiveDOMObjectMap(isolate).set(object.leakRef(), wrapperHandle);
168         return wrapperHandle;
169     }
170 }
171
172 #endif // V8DOMWrapper_h