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// Copyright 2014 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 REMOTING_CLIENT_PLUGIN_PEPPER_MOUSE_LOCKER_H_
#define REMOTING_CLIENT_PLUGIN_PEPPER_MOUSE_LOCKER_H_
#include "base/callback.h"
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "ppapi/cpp/mouse_lock.h"
#include "ppapi/utility/completion_callback_factory.h"
#include "remoting/protocol/cursor_shape_stub.h"
namespace pp {
class Instance;
} // namespace pp
namespace remoting {
class PepperInputHandler;
class PepperMouseLocker : public pp::MouseLock,
public protocol::CursorShapeStub {
public:
// |instance| and |cursor_stub| must outlive |this|.
PepperMouseLocker(
pp::Instance* instance,
const base::Callback<void(bool)>& enable_mouse_deltas,
protocol::CursorShapeStub* cursor_stub);
~PepperMouseLocker() override;
// Must be called when the plugin receives or loses focus.
void DidChangeFocus(bool has_focus);
// protocol::CursorShapeStub interface.
void SetCursorShape(const protocol::CursorShapeInfo& cursor_shape) override;
private:
enum MouseLockState {
MouseLockOff,
MouseLockRequestPending,
MouseLockOn,
MouseLockCancelling
};
// pp::MouseLock interface.
void MouseLockLost() override;
// Handles completion of the mouse lock request issued by RequestMouseLock().
void OnMouseLocked(int error);
// Sets the mouse-lock state to "off" and restores the normal mouse cursor.
void OnMouseLockOff();
// Requests the browser to lock the mouse and hides the cursor.
void RequestMouseLock();
// Requests the browser to cancel mouse lock and restores the cursor once
// the lock is gone.
void CancelMouseLock();
// Callback used to enable/disable delta motion fields in mouse events.
base::Callback<void(bool)> enable_mouse_deltas_;
// Stub used to set the cursor that will actually be displayed.
protocol::CursorShapeStub* cursor_stub_;
// Copy of the most-recently-set cursor, to set when mouse-lock is cancelled.
scoped_ptr<protocol::CursorShapeInfo> cursor_shape_;
// Used to create PPAPI callbacks that will be abandoned when |this| is
// deleted.
pp::CompletionCallbackFactory<PepperMouseLocker> callback_factory_;
// True if the plugin has focus.
bool has_focus_;
// Holds the current mouse lock state.
MouseLockState mouse_lock_state_;
DISALLOW_COPY_AND_ASSIGN(PepperMouseLocker);
};
} // namespace remoting
#endif // REMOTING_CLIENT_PLUGIN_PEPPER_MOUSE_LOCKER_H_
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