ui/views/widget/desktop_aura/x11_move_loop.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_VIEWS_WIDGET_DESKTOP_AURA_X11_MOVE_LOOP_H_
   6 #define UI_VIEWS_WIDGET_DESKTOP_AURA_X11_MOVE_LOOP_H_
   7
   8 #include "ui/gfx/native_widget_types.h"
   9 #include "ui/gfx/x/x11_types.h"
  10
  11 namespace views {
  12
  13 // Runs a nested message loop and grabs the mouse. This is used to implement
  14 // dragging.
  15 class X11MoveLoop {
  16  public:
  17   virtual ~X11MoveLoop() {}
  18
  19   // Runs the nested message loop. While the mouse is grabbed, use |cursor| as
  20   // the mouse cursor. Returns true if the move-loop is completed successfully.
  21   // If the pointer-grab fails, or the move-loop is canceled by the user (e.g.
  22   // by pressing escape), then returns false.
  23   virtual bool RunMoveLoop(aura::Window* window, gfx::NativeCursor cursor) = 0;
  24
  25   // Updates the cursor while the move loop is running.
  26   virtual void UpdateCursor(gfx::NativeCursor cursor) = 0;
  27
  28   // Ends the move loop that's currently in progress.
  29   virtual void EndMoveLoop() = 0;
  30 };
  31
  32 }  // namespace views
  33
  34 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_X11_MOVE_LOOP_H_