1// Copyright 2014 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "ash/accelerators/nested_accelerator_delegate.h" 6 7#include "ash/accelerators/accelerator_controller.h" 8#include "ash/shell.h" 9#include "ui/aura/window_event_dispatcher.h" 10#include "ui/base/accelerators/accelerator.h" 11#include "ui/events/event.h" 12#include "ui/events/event_constants.h" 13#include "ui/events/event_utils.h" 14#include "ui/views/controls/menu/menu_controller.h" 15 16namespace ash { 17namespace { 18 19bool IsPossibleAcceleratorNotForMenu(const ui::Accelerator& accelerator) { 20 // For shortcuts generated by Ctrl or Alt plus a letter, number or 21 // the tab key, we want to exit the context menu first and then 22 // repost the event. That allows for the shortcut execution after 23 // the context menu has exited. 24 if (accelerator.type() == ui::ET_KEY_PRESSED && 25 (accelerator.modifiers() & (ui::EF_CONTROL_DOWN | ui::EF_ALT_DOWN))) { 26 const ui::KeyboardCode key_code = accelerator.key_code(); 27 if ((key_code >= ui::VKEY_A && key_code <= ui::VKEY_Z) || 28 (key_code >= ui::VKEY_0 && key_code <= ui::VKEY_9) || 29 (key_code == ui::VKEY_TAB)) { 30 return true; 31 } 32 } 33 return false; 34} 35 36bool ShouldProcessAcceleratorNow(const ui::Accelerator& accelerator) { 37 if (!IsPossibleAcceleratorNotForMenu(accelerator)) 38 return true; 39 40 if (views::MenuController* menu_controller = 41 views::MenuController::GetActiveInstance()) { 42 menu_controller->CancelAll(); 43 return false; 44 } 45 return true; 46} 47 48} // namespace 49 50NestedAcceleratorDelegate::NestedAcceleratorDelegate() { 51} 52 53NestedAcceleratorDelegate::~NestedAcceleratorDelegate() { 54} 55 56NestedAcceleratorDelegate::Result NestedAcceleratorDelegate::ProcessAccelerator( 57 const ui::Accelerator& accelerator) { 58 if (!ShouldProcessAcceleratorNow(accelerator)) 59 return RESULT_PROCESS_LATER; 60 61 ash::AcceleratorController* accelerator_controller = 62 ash::Shell::GetInstance()->accelerator_controller(); 63 if (!accelerator_controller) 64 return RESULT_NOT_PROCESSED; 65 return accelerator_controller->Process(accelerator) ? RESULT_PROCESSED 66 : RESULT_NOT_PROCESSED; 67} 68 69} // namespace ash 70