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      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 
     34 namespace WebCore {
     35 
     36 void V8DOMConfiguration::installAttributes(v8::Handle<v8::ObjectTemplate> instanceTemplate, v8::Handle<v8::ObjectTemplate> prototype, const AttributeConfiguration* attributes, size_t attributeCount, v8::Isolate* isolate, WrapperWorldType currentWorldType)
     37 {
     38     for (size_t i = 0; i < attributeCount; ++i)
     39         installAttribute(instanceTemplate, prototype, attributes[i], isolate, currentWorldType);
     40 }
     41 
     42 void V8DOMConfiguration::installAccessors(v8::Handle<v8::ObjectTemplate> prototype, v8::Handle<v8::Signature> signature, const AccessorConfiguration* accessors, size_t accessorCount, v8::Isolate* isolate, WrapperWorldType currentWorldType)
     43 {
     44     for (size_t i = 0; i < accessorCount; ++i) {
     45         v8::FunctionCallback getterCallback = accessors[i].getter;
     46         v8::FunctionCallback setterCallback = accessors[i].setter;
     47         if (currentWorldType == MainWorld) {
     48             if (accessors[i].getterForMainWorld)
     49                 getterCallback = accessors[i].getterForMainWorld;
     50             if (accessors[i].setterForMainWorld)
     51                 setterCallback = accessors[i].setterForMainWorld;
     52         }
     53 
     54         v8::Local<v8::FunctionTemplate> getter;
     55         if (getterCallback) {
     56             getter = v8::FunctionTemplate::New(isolate, getterCallback, v8::External::New(isolate, const_cast<WrapperTypeInfo*>(accessors[i].data)), signature, 0);
     57             getter->RemovePrototype();
     58         }
     59         v8::Local<v8::FunctionTemplate> setter;
     60         if (setterCallback) {
     61             setter = v8::FunctionTemplate::New(isolate, setterCallback, v8::External::New(isolate, const_cast<WrapperTypeInfo*>(accessors[i].data)), signature, 1);
     62             setter->RemovePrototype();
     63         }
     64         prototype->SetAccessorProperty(v8::String::NewFromUtf8(isolate, accessors[i].name, v8::String::kInternalizedString), getter, setter, accessors[i].attribute, accessors[i].settings);
     65     }
     66 }
     67 
     68 void V8DOMConfiguration::installConstants(v8::Handle<v8::FunctionTemplate> functionDescriptor, v8::Handle<v8::ObjectTemplate> prototype, const ConstantConfiguration* constants, size_t constantCount, v8::Isolate* isolate)
     69 {
     70     for (size_t i = 0; i < constantCount; ++i) {
     71         const ConstantConfiguration* constant = &constants[i];
     72         functionDescriptor->Set(v8::String::NewFromUtf8(isolate, constant->name, v8::String::kInternalizedString), v8::Integer::New(isolate, constant->value), static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete));
     73         prototype->Set(v8::String::NewFromUtf8(isolate, constant->name, v8::String::kInternalizedString), v8::Integer::New(isolate, constant->value), static_cast<v8::PropertyAttribute>(v8::ReadOnly | v8::DontDelete));
     74     }
     75 }
     76 
     77 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, WrapperWorldType currentWorldType)
     78 {
     79     for (size_t i = 0; i < callbackCount; ++i) {
     80         v8::FunctionCallback callback = callbacks[i].callback;
     81         if (currentWorldType == MainWorld && callbacks[i].callbackForMainWorld)
     82             callback = callbacks[i].callbackForMainWorld;
     83         v8::Local<v8::FunctionTemplate> functionTemplate = v8::FunctionTemplate::New(isolate, callback, v8Undefined(), signature, callbacks[i].length);
     84         functionTemplate->RemovePrototype();
     85         prototype->Set(v8::String::NewFromUtf8(isolate, callbacks[i].name, v8::String::kInternalizedString), functionTemplate, attributes);
     86     }
     87 }
     88 
     89 v8::Local<v8::Signature> V8DOMConfiguration::installDOMClassTemplate(v8::Handle<v8::FunctionTemplate> functionDescriptor, const char* interfaceName, v8::Handle<v8::FunctionTemplate> parentClass, size_t fieldCount,
     90     const AttributeConfiguration* attributes, size_t attributeCount,
     91     const AccessorConfiguration* accessors, size_t accessorCount,
     92     const MethodConfiguration* callbacks, size_t callbackCount,
     93     v8::Isolate* isolate, WrapperWorldType currentWorldType)
     94 {
     95     functionDescriptor->SetClassName(v8::String::NewFromUtf8(isolate, interfaceName, v8::String::kInternalizedString));
     96     v8::Local<v8::ObjectTemplate> instanceTemplate = functionDescriptor->InstanceTemplate();
     97     instanceTemplate->SetInternalFieldCount(fieldCount);
     98     if (!parentClass.IsEmpty()) {
     99         functionDescriptor->Inherit(parentClass);
    100         // Marks the prototype object as one of native-backed objects.
    101         // This is needed since bug 110436 asks WebKit to tell native-initiated prototypes from pure-JS ones.
    102         // This doesn't mark kinds "root" classes like Node, where setting this changes prototype chain structure.
    103         v8::Local<v8::ObjectTemplate> prototype = functionDescriptor->PrototypeTemplate();
    104         prototype->SetInternalFieldCount(v8PrototypeInternalFieldcount);
    105     }
    106 
    107     v8::Local<v8::Signature> defaultSignature = v8::Signature::New(isolate, functionDescriptor);
    108     if (attributeCount)
    109         installAttributes(instanceTemplate, functionDescriptor->PrototypeTemplate(), attributes, attributeCount, isolate, currentWorldType);
    110     if (accessorCount)
    111         installAccessors(functionDescriptor->PrototypeTemplate(), defaultSignature, accessors, accessorCount, isolate, currentWorldType);
    112     if (callbackCount)
    113         installCallbacks(functionDescriptor->PrototypeTemplate(), defaultSignature, static_cast<v8::PropertyAttribute>(v8::DontDelete), callbacks, callbackCount, isolate, currentWorldType);
    114     return defaultSignature;
    115 }
    116 
    117 } // namespace WebCore
    118