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Side by Side Diff: ash/common/wm/maximize_mode/maximize_mode_window_state.h

Issue 2736573002: chromeos: Move files in //ash/common to //ash, part 2 (Closed)
Patch Set: Created 3 years, 9 months ago
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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_COMMON_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_WINDOW_STATE_H_
6 #define ASH_COMMON_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_WINDOW_STATE_H_
7
8 #include <memory>
9
10 #include "ash/common/wm/window_state.h"
11 #include "base/macros.h"
12
13 namespace ash {
14 class MaximizeModeWindowManager;
15 class WmWindow;
16
17 // The MaximizeModeWindowState implementation which reduces all possible window
18 // states to minimized and maximized. If a window cannot be maximized it will be
19 // set to normal. If a window cannot fill the entire workspace it will be
20 // centered within the workspace.
21 class MaximizeModeWindowState : public wm::WindowState::State {
22 public:
23 // Called when the window position might need to be updated.
24 static void UpdateWindowPosition(wm::WindowState* window_state);
25
26 // The |window|'s state object will be modified to use this new window mode
27 // state handler. Upon destruction it will restore the previous state handler
28 // and call |creator::WindowStateDestroyed()| to inform that the window mode
29 // was reverted to the old window manager.
30 MaximizeModeWindowState(WmWindow* window, MaximizeModeWindowManager* creator);
31 ~MaximizeModeWindowState() override;
32
33 // Leaves the maximize mode by reverting to previous state object.
34 void LeaveMaximizeMode(wm::WindowState* window_state);
35
36 // Sets whether to ignore bounds updates. If set to false, immediately does a
37 // bounds update as the current window bounds may no longer be correct.
38 void SetDeferBoundsUpdates(bool defer_bounds_updates);
39
40 // WindowState::State overrides:
41 void OnWMEvent(wm::WindowState* window_state,
42 const wm::WMEvent* event) override;
43
44 wm::WindowStateType GetType() const override;
45 void AttachState(wm::WindowState* window_state,
46 wm::WindowState::State* previous_state) override;
47 void DetachState(wm::WindowState* window_state) override;
48
49 private:
50 // Updates the window to |new_state_type| and resulting bounds:
51 // Either full screen, maximized centered or minimized. If the state does not
52 // change, only the bounds will be changed. If |animate| is set, the bound
53 // change get animated.
54 void UpdateWindow(wm::WindowState* window_state,
55 wm::WindowStateType new_state_type,
56 bool animate);
57
58 // Depending on the capabilities of the window we either return
59 // |WINDOW_STATE_TYPE_MAXIMIZED| or |WINDOW_STATE_TYPE_NORMAL|.
60 wm::WindowStateType GetMaximizedOrCenteredWindowType(
61 wm::WindowState* window_state);
62
63 // Updates the bounds to the maximum possible bounds according to the current
64 // window state. If |animated| is set we animate the change.
65 void UpdateBounds(wm::WindowState* window_state, bool animated);
66
67 // The original state object of the window.
68 std::unique_ptr<wm::WindowState::State> old_state_;
69
70 // The state object for this object which owns this instance.
71 WmWindow* window_;
72
73 // The creator which needs to be informed when this state goes away.
74 MaximizeModeWindowManager* creator_;
75
76 // The current state type. Due to the nature of this state, this can only be
77 // WM_STATE_TYPE{NORMAL, MINIMIZED, MAXIMIZED}.
78 wm::WindowStateType current_state_type_;
79
80 // If true, do not update bounds.
81 bool defer_bounds_updates_;
82
83 DISALLOW_COPY_AND_ASSIGN(MaximizeModeWindowState);
84 };
85
86 } // namespace ash
87
88 #endif // ASH_COMMON_WM_MAXIMIZE_MODE_MAXIMIZE_MODE_WINDOW_STATE_H_
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