68 lines
2.2 KiB
C++
68 lines
2.2 KiB
C++
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// 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 "shell/common/gin_helper/dictionary.h"
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#include "shell/common/gin_helper/object_template_builder.h"
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#include "ui/events/event_constants.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> CreateEventObject(v8::Isolate* isolate) {
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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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return v8::Local<v8::ObjectTemplate>::New(isolate, event_template)
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->NewInstance(isolate->GetCurrentContext())
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.ToLocalChecked();
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}
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v8::Local<v8::Object> CreateCustomEvent(v8::Isolate* isolate,
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v8::Local<v8::Object> object,
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v8::Local<v8::Object> custom_event) {
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v8::Local<v8::Object> event = CreateEventObject(isolate);
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event->SetPrototype(custom_event->CreationContext(), custom_event).IsJust();
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Dictionary(isolate, event).Set("sender", object);
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return event;
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}
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v8::Local<v8::Object> CreateEventFromFlags(v8::Isolate* isolate, int flags) {
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const int mouse_button_flags =
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(ui::EF_RIGHT_MOUSE_BUTTON | ui::EF_LEFT_MOUSE_BUTTON |
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ui::EF_MIDDLE_MOUSE_BUTTON | ui::EF_BACK_MOUSE_BUTTON |
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ui::EF_FORWARD_MOUSE_BUTTON);
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const int is_mouse_click = static_cast<bool>(flags & mouse_button_flags);
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Dictionary obj = gin::Dictionary::CreateEmpty(isolate);
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obj.Set("shiftKey", static_cast<bool>(flags & ui::EF_SHIFT_DOWN));
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obj.Set("ctrlKey", static_cast<bool>(flags & ui::EF_CONTROL_DOWN));
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obj.Set("altKey", static_cast<bool>(flags & ui::EF_ALT_DOWN));
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obj.Set("metaKey", static_cast<bool>(flags & ui::EF_COMMAND_DOWN));
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obj.Set("triggeredByAccelerator", !is_mouse_click);
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return obj.GetHandle();
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}
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} // namespace internal
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} // namespace gin_helper
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