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// 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.
#ifndef ASH_ACCELERATORS_ACCELERATOR_ROUTER_H_
#define ASH_ACCELERATORS_ACCELERATOR_ROUTER_H_
#include "ash/ash_export.h"
#include "base/macros.h"
#include "base/time/time.h"
namespace aura {
class Window;
}
namespace ui {
class Accelerator;
class KeyEvent;
}
namespace ash {
// AcceleratorRouter does a minimal amount of processing before routing the
// accelerator to the AcceleratorController. AcceleratorRouter may also decide
// not to process certain accelerators.
class ASH_EXPORT AcceleratorRouter {
public:
AcceleratorRouter();
~AcceleratorRouter();
// Returns true if event should be consumed. |target| is the target of the
// event.
bool ProcessAccelerator(aura::Window* target,
const ui::KeyEvent& event,
const ui::Accelerator& accelerator);
private:
// 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_;
DISALLOW_COPY_AND_ASSIGN(AcceleratorRouter);
};
} // namespace ash
#endif // ASH_ACCELERATORS_ACCELERATOR_ROUTER_H_