1 /* 2 * Copyright (C) 2012 Google 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 * 8 * 1. Redistributions of source code must retain the above copyright 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 14 * its contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 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 137