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// Copyright 2015 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_MUS_WS_EVENT_DISPATCHER_DELEGATE_H_
#define COMPONENTS_MUS_WS_EVENT_DISPATCHER_DELEGATE_H_
#include <stdint.h>
#include "components/mus/common/types.h"
namespace gfx {
class Point;
}
namespace ui {
class Event;
}
namespace mus {
namespace ws {
class Accelerator;
class ServerWindow;
// Used by EventDispatcher for mocking in tests.
class EventDispatcherDelegate {
public:
virtual void OnAccelerator(uint32_t accelerator, const ui::Event& event) = 0;
virtual void SetFocusedWindowFromEventDispatcher(ServerWindow* window) = 0;
virtual ServerWindow* GetFocusedWindowForEventDispatcher() = 0;
// Called when capture should be set on the native display. |window| is the
// window capture is being set on.
virtual void SetNativeCapture(ServerWindow* window) = 0;
// Called when the native display is having capture released. There is no
// longer a ServerWindow holding capture.
virtual void ReleaseNativeCapture() = 0;
// Called when |window| has lost capture. The native display may still be
// holding capture. The delegate should not change native display capture.
// ReleaseNativeCapture() is invoked if appropriate.
virtual void OnServerWindowCaptureLost(ServerWindow* window) = 0;
virtual void OnMouseCursorLocationChanged(const gfx::Point& point) = 0;
// Dispatches an event to the specific client.
virtual void DispatchInputEventToWindow(ServerWindow* target,
ClientSpecificId client_id,
const ui::Event& event,
Accelerator* accelerator) = 0;
// Returns the id of the client to send events to. |in_nonclient_area| is
// true if the event occurred in the non-client area of the window.
virtual ClientSpecificId GetEventTargetClientId(const ServerWindow* window,
bool in_nonclient_area) = 0;
// Returns the window to start searching from at the specified location, or
// null if there is a no window containing |location|.
virtual ServerWindow* GetRootWindowContaining(const gfx::Point& location) = 0;
// Called when event dispatch could not find a target. OnAccelerator may still
// be called.
virtual void OnEventTargetNotFound(const ui::Event& event) = 0;
protected:
virtual ~EventDispatcherDelegate() {}
};
} // namespace ws
} // namespace mus
#endif // COMPONENTS_MUS_WS_EVENT_DISPATCHER_DELEGATE_H_
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