blob: 65fcf684e5c7e0accf5ac0c81faf99efb4f8b406 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_AURA_WINDOW_TRACKER_H_
#define UI_AURA_WINDOW_TRACKER_H_
#include <vector>
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "ui/aura/aura_export.h"
#include "ui/aura/window_observer.h"
namespace aura {
// This class keeps track of a set of windows. A Window is removed either
// explicitly by Remove() or Pop(), or implicitly when the window is destroyed.
class AURA_EXPORT WindowTracker : public WindowObserver {
public:
using WindowList = std::vector<Window*>;
WindowTracker();
explicit WindowTracker(const WindowList& windows);
~WindowTracker() override;
bool has_windows() const { return !windows_.empty(); }
// Returns the set of windows being observed.
const std::vector<Window*>& windows() const { return windows_; }
// Adds |window| to the set of Windows being tracked.
void Add(Window* window);
// Removes |window| from the set of windows being tracked.
void Remove(Window* window);
// Returns true if |window| was previously added and has not been removed or
// deleted.
bool Contains(Window* window);
// Removes and returns the window object from the tracking windows.
aura::Window* Pop();
// WindowObserver overrides:
void OnWindowDestroying(Window* window) override;
private:
WindowList windows_;
DISALLOW_COPY_AND_ASSIGN(WindowTracker);
};
} // namespace aura
#endif // UI_AURA_WINDOW_TRACKER_H_
|
