electron/shell/common/gin_helper/event_emitter.cc
Cheng Zhao 0fe6767d6b
chore: remove native_mate (Part 11) (#20719)
* refactor: convert Menu and globalShortcut to gin

* refactor: convert api::Cookies to gin

* refactor: convert View and WebContentsView to gin

* refactor: convert WebContents related classes to gin

* refactor: convert powerMonitor to gin

* refactor: prepare for header change

* refactor: remove last uses of mate::EventEmitter

* refactor: remove mate::EventEmitter

* refactor: move trackable_object to gin_helper

* fix: custom converter should not use Handle

* fix: no more need to check if icon is empty

It was a bug that the Handle<NativeImage> can be non-empty when the
image file does not exist. The bug was caused by the converter code
writing out the image even when the convertion fails.

The bug was work-arounded by adding an additional check, but since the
original bug had been fixed, the additional check is no longer needed.

* fix: should always set frameId even when callback is null

* fix: do not mix gin/mate handles for NativeImage
2019-10-25 22:03:28 +09:00

93 lines
3.1 KiB
C++

// Copyright (c) 2019 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "shell/common/gin_helper/event_emitter.h"
#include "content/public/browser/render_frame_host.h"
#include "shell/browser/api/event.h"
#include "shell/common/gin_helper/dictionary.h"
#include "shell/common/gin_helper/object_template_builder.h"
#include "ui/events/event_constants.h"
namespace gin_helper {
namespace internal {
namespace {
v8::Persistent<v8::ObjectTemplate> event_template;
void PreventDefault(gin_helper::Arguments* args) {
Dictionary self;
if (args->GetHolder(&self))
self.Set("defaultPrevented", true);
}
} // namespace
v8::Local<v8::Object> CreateEvent(v8::Isolate* isolate,
v8::Local<v8::Object> sender,
v8::Local<v8::Object> custom_event) {
if (event_template.IsEmpty()) {
event_template.Reset(
isolate,
ObjectTemplateBuilder(isolate, v8::ObjectTemplate::New(isolate))
.SetMethod("preventDefault", &PreventDefault)
.Build());
}
v8::Local<v8::Context> context = isolate->GetCurrentContext();
v8::Local<v8::Object> event =
v8::Local<v8::ObjectTemplate>::New(isolate, event_template)
->NewInstance(context)
.ToLocalChecked();
if (!sender.IsEmpty())
Dictionary(isolate, event).Set("sender", sender);
if (!custom_event.IsEmpty())
event->SetPrototype(context, custom_event).IsJust();
return event;
}
v8::Local<v8::Object> CreateEventFromFlags(v8::Isolate* isolate, int flags) {
const int mouse_button_flags =
(ui::EF_RIGHT_MOUSE_BUTTON | ui::EF_LEFT_MOUSE_BUTTON |
ui::EF_MIDDLE_MOUSE_BUTTON | ui::EF_BACK_MOUSE_BUTTON |
ui::EF_FORWARD_MOUSE_BUTTON);
const int is_mouse_click = static_cast<bool>(flags & mouse_button_flags);
Dictionary obj = gin::Dictionary::CreateEmpty(isolate);
obj.Set("shiftKey", static_cast<bool>(flags & ui::EF_SHIFT_DOWN));
obj.Set("ctrlKey", static_cast<bool>(flags & ui::EF_CONTROL_DOWN));
obj.Set("altKey", static_cast<bool>(flags & ui::EF_ALT_DOWN));
obj.Set("metaKey", static_cast<bool>(flags & ui::EF_COMMAND_DOWN));
obj.Set("triggeredByAccelerator", !is_mouse_click);
return obj.GetHandle();
}
v8::Local<v8::Object> CreateNativeEvent(
v8::Isolate* isolate,
v8::Local<v8::Object> sender,
content::RenderFrameHost* frame,
base::Optional<electron::mojom::ElectronBrowser::MessageSyncCallback>
callback) {
v8::Local<v8::Object> event;
if (frame && callback) {
mate::Handle<mate::Event> native_event = mate::Event::Create(isolate);
native_event->SetCallback(std::move(callback));
event = v8::Local<v8::Object>::Cast(native_event.ToV8());
} else {
// No need to create native event if we do not need to send reply.
event = CreateEvent(isolate);
}
Dictionary dict(isolate, event);
dict.Set("sender", sender);
// Should always set frameId even when callback is null.
if (frame)
dict.Set("frameId", frame->GetRoutingID());
return event;
}
} // namespace internal
} // namespace gin_helper