80 lines
2.4 KiB
C++
80 lines
2.4 KiB
C++
// Copyright (c) 2019 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#include "shell/common/gin_helper/event_emitter.h"
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#include "content/public/browser/render_frame_host.h"
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#include "content/public/browser/render_process_host.h"
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#include "shell/browser/api/event.h"
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#include "shell/common/gin_helper/dictionary.h"
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#include "shell/common/gin_helper/object_template_builder.h"
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namespace gin_helper {
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namespace internal {
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namespace {
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v8::Persistent<v8::ObjectTemplate> event_template;
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void PreventDefault(gin_helper::Arguments* args) {
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Dictionary self;
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if (args->GetHolder(&self))
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self.Set("defaultPrevented", true);
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}
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} // namespace
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v8::Local<v8::Object> CreateEvent(v8::Isolate* isolate,
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v8::Local<v8::Object> sender,
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v8::Local<v8::Object> custom_event) {
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if (event_template.IsEmpty()) {
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event_template.Reset(
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isolate,
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ObjectTemplateBuilder(isolate, v8::ObjectTemplate::New(isolate))
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.SetMethod("preventDefault", &PreventDefault)
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.Build());
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}
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v8::Local<v8::Context> context = isolate->GetCurrentContext();
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CHECK(!context.IsEmpty());
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v8::Local<v8::Object> event =
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v8::Local<v8::ObjectTemplate>::New(isolate, event_template)
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->NewInstance(context)
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.ToLocalChecked();
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if (!sender.IsEmpty())
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Dictionary(isolate, event).Set("sender", sender);
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if (!custom_event.IsEmpty())
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event->SetPrototype(context, custom_event).IsJust();
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return event;
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}
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v8::Local<v8::Object> CreateNativeEvent(
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v8::Isolate* isolate,
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v8::Local<v8::Object> sender,
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content::RenderFrameHost* frame,
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electron::mojom::ElectronBrowser::MessageSyncCallback callback) {
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v8::Local<v8::Object> event;
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if (frame && callback) {
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gin::Handle<Event> native_event = Event::Create(isolate);
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native_event->SetCallback(std::move(callback));
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event = native_event.ToV8().As<v8::Object>();
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} else {
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// No need to create native event if we do not need to send reply.
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event = CreateEvent(isolate);
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}
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Dictionary dict(isolate, event);
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dict.Set("sender", sender);
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// Should always set frameId even when callback is null.
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if (frame) {
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dict.Set("frameId", frame->GetRoutingID());
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dict.Set("processId", frame->GetProcess()->GetID());
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}
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return event;
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}
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} // namespace internal
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} // namespace gin_helper
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