ui/views/window/window_button_order_provider.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_WINDOW_WINDOW_BUTTON_ORDER_PROVIDER_H_
   6 #define UI_VIEWS_WINDOW_WINDOW_BUTTON_ORDER_PROVIDER_H_
   7
   8 #include <vector>
   9
  10 #include "base/macros.h"
  11 #include "ui/views/views_export.h"
  12 #include "ui/views/window/frame_buttons.h"
  13
  14 namespace views {
  15
  16 // Stores the ordering of window control buttons. Provides a default ordering
  17 // of |FRAME_BUTTON_MINIMZE|, |FRAME_BUTTON_MAXIMIZE|, |FRAME_BUTTON_CLOSE|,
  18 // where all controls are on the trailing end of a window.
  19 //
  20 // On Linux users can provide configuration files to control the ordering. This
  21 // configuration is checked and overrides the defaults.
  22 class VIEWS_EXPORT WindowButtonOrderProvider {
  23  public:
  24   static WindowButtonOrderProvider* GetInstance();
  25
  26   const std::vector<views::FrameButton>& leading_buttons() const {
  27     return leading_buttons_;
  28   }
  29
  30   const std::vector<views::FrameButton>& trailing_buttons() const {
  31     return trailing_buttons_;
  32   }
  33
  34   void SetWindowButtonOrder(
  35       const std::vector<views::FrameButton>& leading_buttons,
  36       const std::vector<views::FrameButton>& trailing_buttons);
  37
  38  protected:
  39   WindowButtonOrderProvider();
  40   virtual ~WindowButtonOrderProvider();
  41
  42  private:
  43   static WindowButtonOrderProvider* instance_;
  44
  45   // Layout arrangement of the window caption buttons. On linux these will be
  46   // set via a WindowButtonOrderObserver. On other platforms a default
  47   // arrangement of a trailing minimize, maximize, close, will be set.
  48   std::vector<views::FrameButton> leading_buttons_;
  49   std::vector<views::FrameButton> trailing_buttons_;
  50
  51   DISALLOW_COPY_AND_ASSIGN(WindowButtonOrderProvider);
  52 };
  53
  54 }  // namespace views
  55
  56 #endif  // UI_VIEWS_WINDOW_WINDOW_BUTTON_ORDER_PROVIDER_H_