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event.cc
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77 lines (61 loc) · 2.14 KB
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// 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 "shell/browser/api/event.h"
#include <utility>
#include "gin/data_object_builder.h"
#include "gin/object_template_builder.h"
#include "shell/browser/javascript_environment.h"
#include "shell/common/gin_converters/blink_converter.h"
#include "shell/common/gin_converters/std_converter.h"
namespace gin_helper {
gin::WrapperInfo Event::kWrapperInfo = {gin::kEmbedderNativeGin};
Event::Event() = default;
Event::~Event() {
if (callback_) {
v8::Isolate* isolate = electron::JavascriptEnvironment::GetIsolate();
// If there's no current context, it means we're shutting down, so we don't
// need to send an event.
if (!isolate->GetCurrentContext().IsEmpty()) {
v8::HandleScope scope(isolate);
auto message = gin::DataObjectBuilder(isolate)
.Set("error", "reply was never sent")
.Build();
SendReply(isolate, message);
}
}
}
void Event::SetCallback(InvokeCallback callback) {
DCHECK(!callback_);
callback_ = std::move(callback);
}
void Event::PreventDefault(v8::Isolate* isolate) {
v8::Local<v8::Object> self = GetWrapper(isolate).ToLocalChecked();
self->Set(isolate->GetCurrentContext(),
gin::StringToV8(isolate, "defaultPrevented"), v8::True(isolate))
.Check();
}
bool Event::SendReply(v8::Isolate* isolate, v8::Local<v8::Value> result) {
if (!callback_)
return false;
blink::CloneableMessage message;
if (!gin::ConvertFromV8(isolate, result, &message)) {
return false;
}
std::move(callback_).Run(std::move(message));
return true;
}
gin::ObjectTemplateBuilder Event::GetObjectTemplateBuilder(
v8::Isolate* isolate) {
return gin::Wrappable<Event>::GetObjectTemplateBuilder(isolate)
.SetMethod("preventDefault", &Event::PreventDefault)
.SetMethod("sendReply", &Event::SendReply);
}
const char* Event::GetTypeName() {
return "Event";
}
// static
gin::Handle<Event> Event::Create(v8::Isolate* isolate) {
return gin::CreateHandle(isolate, new Event());
}
} // namespace gin_helper