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1 // Copyright 2015 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 COMPONENTS_VIEW_MANAGER_PUBLIC_CPP_SCOPED_VIEW_PTR_H_ | |
6 #define COMPONENTS_VIEW_MANAGER_PUBLIC_CPP_SCOPED_VIEW_PTR_H_ | |
7 | |
8 #include "components/view_manager/public/cpp/view_observer.h" | |
9 | |
10 namespace mojo { | |
11 | |
12 // Wraps a View, taking overship of the View. Also deals with View being | |
13 // destroyed while ScopedViewPtr still exists. | |
14 class ScopedViewPtr : public ViewObserver { | |
15 public: | |
16 explicit ScopedViewPtr(View* view); | |
17 ~ScopedViewPtr() override; | |
18 | |
19 // Destroys |view|. If |view| is the root of the ViewManager than the | |
20 // ViewManager is destroyed (which in turn destroys |view|). | |
21 static void DeleteViewOrViewManager(View* view); | |
22 | |
23 View* view() { return view_; } | |
24 const View* view() const { return view_; } | |
25 | |
26 private: | |
27 void DetachFromView(); | |
28 | |
29 void OnViewDestroying(View* view) override; | |
30 | |
31 View* view_; | |
32 | |
33 DISALLOW_COPY_AND_ASSIGN(ScopedViewPtr); | |
34 }; | |
35 | |
36 } // namespace mojo | |
37 | |
38 #endif // COMPONENTS_VIEW_MANAGER_PUBLIC_CPP_SCOPED_VIEW_PTR_H_ | |
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