V8CustomVoidCallback.cpp [plain text]
#include "config.h"
#include "V8CustomVoidCallback.h"
#include "ScriptExecutionContext.h"
#include "V8Binding.h"
#include "V8Proxy.h"
namespace WebCore {
V8CustomVoidCallback::V8CustomVoidCallback(v8::Local<v8::Object> callback, ScriptExecutionContext *context)
: m_callback(v8::Persistent<v8::Object>::New(callback))
, m_scriptExecutionContext(context)
, m_worldContext(UseCurrentWorld)
{
}
V8CustomVoidCallback::~V8CustomVoidCallback()
{
m_callback.Dispose();
}
void V8CustomVoidCallback::handleEvent()
{
v8::HandleScope handleScope;
v8::Handle<v8::Context> v8Context = toV8Context(m_scriptExecutionContext.get(), m_worldContext);
if (v8Context.IsEmpty())
return;
v8::Context::Scope scope(v8Context);
bool callbackReturnValue = false;
invokeCallback(m_callback, 0, 0, callbackReturnValue, m_scriptExecutionContext.get());
}
bool invokeCallback(v8::Persistent<v8::Object> callback, int argc, v8::Handle<v8::Value> argv[], bool& callbackReturnValue, ScriptExecutionContext* scriptExecutionContext)
{
v8::TryCatch exceptionCatcher;
exceptionCatcher.SetVerbose(true);
v8::Local<v8::Function> callbackFunction;
if (callback->IsFunction()) {
callbackFunction = v8::Local<v8::Function>::New(v8::Persistent<v8::Function>::Cast(callback));
} else if (callback->IsObject()) {
v8::Local<v8::Value> handleEventFunction = callback->Get(v8::String::NewSymbol("handleEvent"));
if (handleEventFunction->IsFunction())
callbackFunction = v8::Local<v8::Function>::Cast(handleEventFunction);
} else
return false;
if (callbackFunction.IsEmpty())
return false;
v8::Handle<v8::Object> thisObject = v8::Context::GetCurrent()->Global();
v8::Handle<v8::Value> result = callbackFunction->Call(thisObject, argc, argv);
callbackReturnValue = !result.IsEmpty() && result->BooleanValue();
return exceptionCatcher.HasCaught();
}
}