68 lines
2 KiB
C++
68 lines
2 KiB
C++
// Copyright (c) 2014 GitHub, Inc.
|
|
// Use of this source code is governed by the MIT license that can be
|
|
// found in the LICENSE file.
|
|
|
|
#include "atom/browser/api/event_emitter.h"
|
|
|
|
#include "atom/browser/api/event.h"
|
|
#include "native_mate/arguments.h"
|
|
#include "native_mate/object_template_builder.h"
|
|
|
|
#include "atom/common/node_includes.h"
|
|
|
|
namespace mate {
|
|
|
|
namespace {
|
|
|
|
v8::Persistent<v8::ObjectTemplate> event_template;
|
|
|
|
void PreventDefault(mate::Arguments* args) {
|
|
args->GetThis()->Set(StringToV8(args->isolate(), "defaultPrevented"),
|
|
v8::True(args->isolate()));
|
|
}
|
|
|
|
// Create a pure JavaScript Event object.
|
|
v8::Local<v8::Object> CreateEventObject(v8::Isolate* isolate) {
|
|
if (event_template.IsEmpty()) {
|
|
event_template.Reset(isolate, ObjectTemplateBuilder(isolate)
|
|
.SetMethod("preventDefault", &PreventDefault)
|
|
.Build());
|
|
}
|
|
|
|
return v8::Local<v8::ObjectTemplate>::New(
|
|
isolate, event_template)->NewInstance();
|
|
}
|
|
|
|
} // namespace
|
|
|
|
EventEmitter::EventEmitter() {
|
|
}
|
|
|
|
bool EventEmitter::CallEmit(v8::Isolate* isolate,
|
|
const base::StringPiece& name,
|
|
content::WebContents* sender,
|
|
IPC::Message* message,
|
|
ValueArray args) {
|
|
v8::Handle<v8::Object> event;
|
|
bool use_native_event = sender && message;
|
|
|
|
if (use_native_event) {
|
|
mate::Handle<mate::Event> native_event = mate::Event::Create(isolate);
|
|
native_event->SetSenderAndMessage(sender, message);
|
|
event = v8::Handle<v8::Object>::Cast(native_event.ToV8());
|
|
} else {
|
|
event = CreateEventObject(isolate);
|
|
}
|
|
|
|
// args = [name, event, args...];
|
|
args.insert(args.begin(), event);
|
|
args.insert(args.begin(), mate::StringToV8(isolate, name));
|
|
|
|
// this.emit.apply(this, args);
|
|
node::MakeCallback(isolate, GetWrapper(isolate), "emit", args.size(),
|
|
&args[0]);
|
|
|
|
return event->Get(StringToV8(isolate, "defaultPrevented"))->BooleanValue();
|
|
}
|
|
|
|
} // namespace mate
|