ash/wm/workspace/workspace_event_handler.h

   1 // Copyright (c) 2012 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 ASH_WM_WORKSPACE_WORKSPACE_EVENT_HANDLER_H_
   6 #define ASH_WM_WORKSPACE_WORKSPACE_EVENT_HANDLER_H_
   7
   8 #include "ash/wm/workspace/multi_window_resize_controller.h"
   9 #include "ui/events/event_handler.h"
  10
  11 namespace ash {
  12 class WorkspaceEventHandlerTestHelper;
  13
  14 namespace wm {
  15 class WindowState;
  16 }
  17
  18 class WorkspaceEventHandler : public ui::EventHandler {
  19  public:
  20   WorkspaceEventHandler();
  21   virtual ~WorkspaceEventHandler();
  22
  23   // ui::EventHandler:
  24   virtual void OnMouseEvent(ui::MouseEvent* event) OVERRIDE;
  25   virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
  26
  27  private:
  28   friend class WorkspaceEventHandlerTestHelper;
  29
  30   // Determines if |event| corresponds to a double click on either the top or
  31   // bottom vertical resize edge, and if so toggles the vertical height of the
  32   // window between its restored state and the full available height of the
  33   // workspace.
  34   void HandleVerticalResizeDoubleClick(wm::WindowState* window_state,
  35                                        ui::MouseEvent* event);
  36
  37   MultiWindowResizeController multi_window_resize_controller_;
  38
  39   // The non-client component for the target of a MouseEvent or GestureEvent.
  40   // Events can be destructive to the window tree, which can cause the
  41   // component of a ui::EF_IS_DOUBLE_CLICK event to no longer be the same as
  42   // that of the initial click. Acting on a double click should only occur for
  43   // matching components. This will be set for left clicks, and tap events.
  44   int click_component_;
  45
  46   DISALLOW_COPY_AND_ASSIGN(WorkspaceEventHandler);
  47 };
  48
  49 }  // namespace ash
  50
  51 #endif  // ASH_WM_WORKSPACE_WORKSPACE_EVENT_HANDLER_H_