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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 COMPONENTS_EXO_WM_HELPER_H_
#define COMPONENTS_EXO_WM_HELPER_H_
#include "base/macros.h"
#include "base/observer_list.h"
#include "ui/base/cursor/cursor.h"
namespace aura {
class Window;
}
namespace display {
class Display;
class ManagedDisplayInfo;
}
namespace ui {
class EventHandler;
}
namespace exo {
// A helper class for accessing WindowManager related features.
class WMHelper {
public:
class ActivationObserver {
public:
virtual void OnWindowActivated(aura::Window* gained_active,
aura::Window* lost_active) = 0;
protected:
virtual ~ActivationObserver() {}
};
class FocusObserver {
public:
virtual void OnWindowFocused(aura::Window* gained_focus,
aura::Window* lost_focus) = 0;
protected:
virtual ~FocusObserver() {}
};
class CursorObserver {
public:
virtual void OnCursorVisibilityChanged(bool is_visible) {}
virtual void OnCursorSetChanged(ui::CursorSetType cursor_set) {}
virtual void OnCursorDisplayChanged(const display::Display& display) {}
protected:
virtual ~CursorObserver() {}
};
class MaximizeModeObserver {
public:
virtual void OnMaximizeModeStarted() = 0;
virtual void OnMaximizeModeEnding() = 0;
virtual void OnMaximizeModeEnded() = 0;
protected:
virtual ~MaximizeModeObserver() {}
};
class InputDeviceEventObserver {
public:
virtual void OnKeyboardDeviceConfigurationChanged() = 0;
protected:
virtual ~InputDeviceEventObserver() {}
};
class DisplayConfigurationObserver {
public:
virtual void OnDisplayConfigurationChanged() = 0;
protected:
virtual ~DisplayConfigurationObserver() {}
};
virtual ~WMHelper();
static void SetInstance(WMHelper* helper);
static WMHelper* GetInstance();
void AddActivationObserver(ActivationObserver* observer);
void RemoveActivationObserver(ActivationObserver* observer);
void AddFocusObserver(FocusObserver* observer);
void RemoveFocusObserver(FocusObserver* observer);
void AddCursorObserver(CursorObserver* observer);
void RemoveCursorObserver(CursorObserver* observer);
void AddMaximizeModeObserver(MaximizeModeObserver* observer);
void RemoveMaximizeModeObserver(MaximizeModeObserver* observer);
void AddInputDeviceEventObserver(InputDeviceEventObserver* observer);
void RemoveInputDeviceEventObserver(InputDeviceEventObserver* observer);
void AddDisplayConfigurationObserver(DisplayConfigurationObserver* observer);
void RemoveDisplayConfigurationObserver(
DisplayConfigurationObserver* observer);
virtual const display::ManagedDisplayInfo& GetDisplayInfo(
int64_t display_id) const = 0;
virtual aura::Window* GetPrimaryDisplayContainer(int container_id) = 0;
virtual aura::Window* GetActiveWindow() const = 0;
virtual aura::Window* GetFocusedWindow() const = 0;
virtual ui::CursorSetType GetCursorSet() const = 0;
virtual const display::Display& GetCursorDisplay() const = 0;
virtual void AddPreTargetHandler(ui::EventHandler* handler) = 0;
virtual void PrependPreTargetHandler(ui::EventHandler* handler) = 0;
virtual void RemovePreTargetHandler(ui::EventHandler* handler) = 0;
virtual void AddPostTargetHandler(ui::EventHandler* handler) = 0;
virtual void RemovePostTargetHandler(ui::EventHandler* handler) = 0;
virtual bool IsMaximizeModeWindowManagerEnabled() const = 0;
protected:
WMHelper();
void NotifyWindowActivated(aura::Window* gained_active,
aura::Window* lost_active);
void NotifyWindowFocused(aura::Window* gained_focus,
aura::Window* lost_focus);
void NotifyCursorVisibilityChanged(bool is_visible);
void NotifyCursorSetChanged(ui::CursorSetType cursor_set);
void NotifyCursorDisplayChanged(const display::Display& display);
void NotifyMaximizeModeStarted();
void NotifyMaximizeModeEnding();
void NotifyMaximizeModeEnded();
void NotifyKeyboardDeviceConfigurationChanged();
void NotifyDisplayConfigurationChanged();
private:
base::ObserverList<ActivationObserver> activation_observers_;
base::ObserverList<FocusObserver> focus_observers_;
base::ObserverList<CursorObserver> cursor_observers_;
base::ObserverList<MaximizeModeObserver> maximize_mode_observers_;
base::ObserverList<InputDeviceEventObserver> input_device_event_observers_;
base::ObserverList<DisplayConfigurationObserver> display_config_observers_;
DISALLOW_COPY_AND_ASSIGN(WMHelper);
};
} // namespace exo
#endif // COMPONENTS_EXO_WM_HELPER_H_
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