blob: 864006774c23cae2aa6516473b15fbf08065002a [file] [log] [blame]
// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/ash_export.h"
#include "base/macros.h"
#include "base/time/time.h"
#include "ui/wm/core/accelerator_delegate.h"
namespace aura {
class Window;
namespace ui {
class Accelerator;
class KeyEvent;
} // namespace ui
namespace ash {
// PreTargetAcceleratorHandler is responsible for handling accelerators that
// are processed before the target is given a chance to process the
// accelerator. This typically includes system or reserved accelerators.
// PreTargetAcceleratorHandler does not actually handle the accelerators, rather
// it calls to AcceleratorController to actually process the accelerator.
class ASH_EXPORT PreTargetAcceleratorHandler
: public ::wm::AcceleratorDelegate {
~PreTargetAcceleratorHandler() override;
// wm::AcceleratorDelegate:
bool ProcessAccelerator(const ui::KeyEvent& event,
const ui::Accelerator& accelerator) override;
// Returns true if the window should be allowed a chance to handle
// system keys.
bool CanConsumeSystemKeys(aura::Window* target, const ui::KeyEvent& event);
// Returns true if the |accelerator| should be processed now.
bool ShouldProcessAcceleratorNow(aura::Window* target,
const ui::KeyEvent& event,
const ui::Accelerator& accelerator);
// Records a histogram on how long the "Search" key is held when a user
// presses an accelerator that involes the "Search" key.
void RecordSearchKeyStats(const ui::Accelerator& accelerator);
enum SearchKeyState { RELEASED = 0, PRESSED, RECORDED };
SearchKeyState search_key_state_ = RELEASED;
base::TimeTicks search_key_pressed_timestamp_;
} // namespace ash