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Side by Side Diff: views/focus/view_storage.h

Issue 8588064: views: Move bubble, events, focus and layout to ui/views/. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 9 years, 1 month ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef VIEWS_FOCUS_VIEW_STORAGE_H_ 5 #ifndef VIEWS_FOCUS_VIEW_STORAGE_H_
6 #define VIEWS_FOCUS_VIEW_STORAGE_H_ 6 #define VIEWS_FOCUS_VIEW_STORAGE_H_
7 #pragma once 7 #pragma once
8 8
9 #include "base/memory/singleton.h" 9 #include "ui/views/focus/view_storage.h"
10 #include "views/view.h" 10 // TODO(tfarina): remove this file once all includes have been updated.
11
12 // This class is a simple storage place for storing/retrieving views. It is
13 // used for example in the FocusManager to store/restore focused views when the
14 // main window becomes active/inactive.
15 // It automatically removes a view from the storage if the view is removed from
16 // the tree hierarchy.
17 //
18 // To use it, you first need to create a view storage id that can then be used
19 // to store/retrieve views.
20
21 namespace views {
22
23 class VIEWS_EXPORT ViewStorage {
24 public:
25 // Returns the global ViewStorage instance.
26 // It is guaranted to be non NULL.
27 static ViewStorage* GetInstance();
28
29 // Returns a unique storage id that can be used to store/retrieve views.
30 int CreateStorageID();
31
32 // Associates |view| with the specified |storage_id|.
33 void StoreView(int storage_id, View* view);
34
35 // Returns the view associated with |storage_id| if any, NULL otherwise.
36 View* RetrieveView(int storage_id);
37
38 // Removes the view associated with |storage_id| if any.
39 void RemoveView(int storage_id);
40
41 // Notifies the ViewStorage that a view was removed from its parent somewhere.
42 void ViewRemoved(View* removed);
43
44 size_t view_count() const { return view_to_ids_.size(); }
45
46 private:
47 friend struct DefaultSingletonTraits<ViewStorage>;
48
49 ViewStorage();
50 ~ViewStorage();
51
52 // Removes the view associated with |storage_id|. If |remove_all_ids| is true,
53 // all other mapping pointing to the same view are removed as well.
54 void EraseView(int storage_id, bool remove_all_ids);
55
56 // Next id for the view storage.
57 int view_storage_next_id_;
58
59 // The association id to View used for the view storage.
60 std::map<int, View*> id_to_view_;
61
62 // Association View to id, used to speed up view notification removal.
63 std::map<View*, std::vector<int>*> view_to_ids_;
64
65 DISALLOW_COPY_AND_ASSIGN(ViewStorage);
66 };
67
68 } // namespace views
69 11
70 #endif // VIEWS_FOCUS_VIEW_STORAGE_H_ 12 #endif // VIEWS_FOCUS_VIEW_STORAGE_H_
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