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 ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_WINDOW_STATE_H_ 6 #define ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_WINDOW_STATE_H_ 7 8 #include "ash/wm/window_state.h" 9 10 namespace ash { 11 class MaximizeModeWindowManager; 12 13 // The MaximizeModeWindowState implementation which reduces all possible window 14 // states to minimized and maximized. If a window cannot be maximized it will be 15 // set to normal. If a window cannot fill the entire workspace it will be 16 // centered within the workspace. 17 class MaximizeModeWindowState : public wm::WindowState::State { 18 public: 19 // Called when the window position might need to be updated. 20 static void UpdateWindowPosition(wm::WindowState* window_state, 21 bool animated); 22 23 // The |window|'s state object will be modified to use this new window mode 24 // state handler. Upon destruction it will restore the previous state handler 25 // and call |creator::WindowStateDestroyed()| to inform that the window mode 26 // was reverted to the old window manager. 27 MaximizeModeWindowState(aura::Window* window, 28 MaximizeModeWindowManager* creator); 29 virtual ~MaximizeModeWindowState(); 30 31 // Leaves the maximize mode by reverting to previous state object. 32 void LeaveMaximizeMode(wm::WindowState* window_state); 33 34 // WindowState::State overrides: 35 virtual void OnWMEvent(wm::WindowState* window_state, 36 const wm::WMEvent* event) OVERRIDE; 37 38 virtual wm::WindowStateType GetType() const OVERRIDE; 39 virtual void AttachState(wm::WindowState* window_state, 40 wm::WindowState::State* previous_state) OVERRIDE; 41 virtual void DetachState(wm::WindowState* window_state) OVERRIDE; 42 43 private: 44 // Updates the window to |new_state_type| and resulting bounds: 45 // Either full screen, maximized centered or minimized. If the state does not 46 // change, only the bounds will be changed. If |animate| is set, the bound 47 // change get animated. 48 void UpdateWindow(wm::WindowState* window_state, 49 wm::WindowStateType new_state_type, 50 bool animate); 51 52 // Depending on the capabilities of the window we either return 53 // |WINDOW_STATE_TYPE_MAXIMIZED| or |WINDOW_STATE_TYPE_NORMAL|. 54 wm::WindowStateType GetMaximizedOrCenteredWindowType( 55 wm::WindowState* window_state); 56 57 // Updates the bounds to the maximum possible bounds according to the current 58 // window state. If |animated| is set we animate the change. 59 void UpdateBounds(wm::WindowState* window_state, bool animated); 60 61 // The original state object of the window. 62 scoped_ptr<wm::WindowState::State> old_state_; 63 64 // The state object for this object which owns this instance. 65 aura::Window* window_; 66 67 // The creator which needs to be informed when this state goes away. 68 MaximizeModeWindowManager* creator_; 69 70 // The current state type. Due to the nature of this state, this can only be 71 // WM_STATE_TYPE{NORMAL, MINIMIZED, MAXIMIZED}. 72 wm::WindowStateType current_state_type_; 73 74 DISALLOW_COPY_AND_ASSIGN(MaximizeModeWindowState); 75 }; 76 77 } // namespace ash 78 79 #endif // ASH_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_WINDOW_STATE_H_ 80
