1 // Copyright (c) 2013 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_LINUX_UI_WINDOW_BUTTON_ORDER_OBSERVER_H_ 6 #define UI_VIEWS_LINUX_UI_WINDOW_BUTTON_ORDER_OBSERVER_H_ 7 8 #include <vector> 9 10 #include "ui/views/window/frame_buttons.h" 11 12 namespace views { 13 14 // Observer interface to receive the ordering of the min,max,close buttons. 15 class WindowButtonOrderObserver { 16 public: 17 // Called when first added to the LinuxUI class, or on a system-wide 18 // configuration event. 19 virtual void OnWindowButtonOrderingChange( 20 const std::vector<views::FrameButton>& leading_buttons, 21 const std::vector<views::FrameButton>& trailing_buttons) = 0; 22 23 protected: 24 virtual ~WindowButtonOrderObserver() {} 25 }; 26 27 } // namespace views 28 29 #endif // UI_VIEWS_LINUX_UI_WINDOW_BUTTON_ORDER_OBSERVER_H_ 30