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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_ACCELERATORS_PRE_TARGET_ACCELERATOR_HANDLER_H_
#define ASH_ACCELERATORS_PRE_TARGET_ACCELERATOR_HANDLER_H_
#include "ash/ash_export.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 {
public:
PreTargetAcceleratorHandler();
PreTargetAcceleratorHandler(const PreTargetAcceleratorHandler&) = delete;
PreTargetAcceleratorHandler& operator=(const PreTargetAcceleratorHandler&) =
delete;
~PreTargetAcceleratorHandler() override;
// wm::AcceleratorDelegate:
bool ProcessAccelerator(const ui::KeyEvent& event,
const ui::Accelerator& accelerator) override;
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);
};
} // namespace ash
#endif // ASH_ACCELERATORS_PRE_TARGET_ACCELERATOR_HANDLER_H_
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