src/third_party/WebKit/Source/bindings/v8/V8DOMConfiguration.cpp

   1 /*
   2  * Copyright (C) 2012 Google Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
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   6  * are met:
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   9  *     notice, this list of conditions and the following disclaimer.
  10  * 2.  Redistributions in binary form must reproduce the above copyright
  11  *     notice, this list of conditions and the following disclaimer in the
  12  *     documentation and/or other materials provided with the distribution.
  13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
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  15  *     from this software without specific prior written permission.
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  27  */
  28
  29 #include "config.h"
  30 #include "bindings/v8/V8DOMConfiguration.h"
  31
  32 #include "bindings/v8/V8Binding.h"
  33 #include "bindings/v8/V8ObjectConstructor.h"
  34 #include "platform/TraceEvent.h"
  35
  36 namespace WebCore {
  37
  38 void V8DOMConfiguration::installAttributes(v8::Handle<v8::ObjectTemplate> instanceTemplate, v8::Handle<v8::ObjectTemplate> prototype, const AttributeConfiguration* attributes, size_t attributeCount, v8::Isolate* isolate)
  39 {
  40     for (size_t i = 0; i < attributeCount; ++i)
  41         installAttribute(instanceTemplate, prototype, attributes[i], isolate);
  42 }
  43
  44 void V8DOMConfiguration::installAccessors(v8::Handle<v8::ObjectTemplate> prototype, v8::Handle<v8::Signature> signature, const AccessorConfiguration* accessors, size_t accessorCount, v8::Isolate* isolate)
  45 {
  46     bool isMainWorld = DOMWrapperWorld::current(isolate).isMainWorld();
  47     for (size_t i = 0; i < accessorCount; ++i) {
  48         v8::FunctionCallback getterCallback = accessors[i].getter;
  49         v8::FunctionCallback setterCallback = accessors[i].setter;
  50         if (isMainWorld) {
  51             if (accessors[i].getterForMainWorld)
  52                 getterCallback = accessors[i].getterForMainWorld;
  53             if (accessors[i].setterForMainWorld)
  54                 setterCallback = accessors[i].setterForMainWorld;
  55         }
  56
  57         v8::Local<v8::FunctionTemplate> getter;
  58         if (getterCallback) {
  59             getter = v8::FunctionTemplate::New(isolate, getterCallback, v8::External::New(isolate, const_cast<WrapperTypeInfo*>(accessors[i].data)), signature, 0);
  60             getter->RemovePrototype();
  61         }
  62         v8::Local<v8::FunctionTemplate> setter;
  63         if (setterCallback) {
  64             setter = v8::FunctionTemplate::New(isolate, setterCallback, v8::External::New(isolate, const_cast<WrapperTypeInfo*>(accessors[i].data)), signature, 1);
  65             setter->RemovePrototype();
  66         }
  67         prototype->SetAccessorProperty(v8AtomicString(isolate, accessors[i].name), getter, setter, accessors[i].attribute, accessors[i].settings);
  68     }
  69 }
  70
  71 void V8DOMConfiguration::installConstants(v8::Handle<v8::FunctionTemplate> functionDescriptor, v8::Handle<v8::ObjectTemplate> prototype, const ConstantConfiguration* constants, size_t constantCount, v8::Isolate* isolate)
  72 {
  73     for (size_t i = 0; i < constantCount; ++i) {
  74         const ConstantConfiguration* constant = &constants[i];
  75         v8::Handle<v8::String> constantName = v8AtomicString(isolate, constant->name);
  76         functionDescriptor->Set(constantName, v8::Integer::New(isolate, constant->value), static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete));
  77         prototype->Set(constantName, v8::Integer::New(isolate, constant->value), static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete));
  78     }
  79 }
  80
  81 void V8DOMConfiguration::installCallbacks(v8::Handle<v8::ObjectTemplate> prototype, v8::Handle<v8::Signature> signature, v8::PropertyAttribute attributes, const MethodConfiguration* callbacks, size_t callbackCount, v8::Isolate* isolate)
  82 {
  83     bool isMainWorld = DOMWrapperWorld::current(isolate).isMainWorld();
  84     for (size_t i = 0; i < callbackCount; ++i) {
  85         v8::FunctionCallback callback = callbacks[i].callback;
  86         if (isMainWorld && callbacks[i].callbackForMainWorld)
  87             callback = callbacks[i].callbackForMainWorld;
  88         v8::Local<v8::FunctionTemplate> functionTemplate = v8::FunctionTemplate::New(isolate, callback, v8Undefined(), signature, callbacks[i].length);
  89         functionTemplate->RemovePrototype();
  90         prototype->Set(v8AtomicString(isolate, callbacks[i].name), functionTemplate, attributes);
  91     }
  92 }
  93
  94 v8::Local<v8::Signature> V8DOMConfiguration::installDOMClassTemplate(v8::Handle<v8::FunctionTemplate> functionDescriptor, const char* interfaceName, v8::Handle<v8::FunctionTemplate> parentClass, size_t fieldCount,
  95     const AttributeConfiguration* attributes, size_t attributeCount,
  96     const AccessorConfiguration* accessors, size_t accessorCount,
  97     const MethodConfiguration* callbacks, size_t callbackCount,
  98     v8::Isolate* isolate)
  99 {
 100     functionDescriptor->SetClassName(v8AtomicString(isolate, interfaceName));
 101     v8::Local<v8::ObjectTemplate> instanceTemplate = functionDescriptor->InstanceTemplate();
 102     instanceTemplate->SetInternalFieldCount(fieldCount);
 103     if (!parentClass.IsEmpty()) {
 104         functionDescriptor->Inherit(parentClass);
 105         // Marks the prototype object as one of native-backed objects.
 106         // This is needed since bug 110436 asks WebKit to tell native-initiated prototypes from pure-JS ones.
 107         // This doesn't mark kinds "root" classes like Node, where setting this changes prototype chain structure.
 108         v8::Local<v8::ObjectTemplate> prototype = functionDescriptor->PrototypeTemplate();
 109         prototype->SetInternalFieldCount(v8PrototypeInternalFieldcount);
 110     }
 111
 112     v8::Local<v8::Signature> defaultSignature = v8::Signature::New(isolate, functionDescriptor);
 113     if (attributeCount)
 114         installAttributes(instanceTemplate, functionDescriptor->PrototypeTemplate(), attributes, attributeCount, isolate);
 115     if (accessorCount)
 116         installAccessors(functionDescriptor->PrototypeTemplate(), defaultSignature, accessors, accessorCount, isolate);
 117     if (callbackCount)
 118         installCallbacks(functionDescriptor->PrototypeTemplate(), defaultSignature, static_cast<v8::PropertyAttribute>(v8::DontDelete), callbacks, callbackCount, isolate);
 119     return defaultSignature;
 120 }
 121
 122 v8::Handle<v8::FunctionTemplate> V8DOMConfiguration::domClassTemplate(v8::Isolate* isolate, WrapperTypeInfo* wrapperTypeInfo, void (*configureDOMClassTemplate)(v8::Handle<v8::FunctionTemplate>, v8::Isolate*))
 123 {
 124     V8PerIsolateData* data = V8PerIsolateData::from(isolate);
 125     v8::Local<v8::FunctionTemplate> result = data->existingDOMTemplate(wrapperTypeInfo);
 126     if (!result.IsEmpty())
 127         return result;
 128
 129     TRACE_EVENT_SCOPED_SAMPLING_STATE("Blink", "BuildDOMTemplate");
 130     result = v8::FunctionTemplate::New(isolate, V8ObjectConstructor::isValidConstructorMode);
 131     configureDOMClassTemplate(result, isolate);
 132     data->setDOMTemplate(wrapperTypeInfo, result);
 133     return result;
 134 }
 135
 136 } // namespace WebCore