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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 #include "components/view_manager/public/cpp/scoped_view_ptr.h" | |
6 | |
7 #include "components/view_manager/public/cpp/view.h" | |
8 #include "components/view_manager/public/cpp/view_observer.h" | |
9 #include "components/view_manager/public/cpp/view_tree_connection.h" | |
10 | |
11 namespace mojo { | |
12 | |
13 ScopedViewPtr::ScopedViewPtr(View* view) | |
14 : view_(view) { | |
15 view_->AddObserver(this); | |
16 } | |
17 | |
18 ScopedViewPtr::~ScopedViewPtr() { | |
19 if (view_) | |
20 DeleteViewOrViewManager(view_); | |
21 DetachFromView(); | |
22 } | |
23 | |
24 // static | |
25 void ScopedViewPtr::DeleteViewOrViewManager(View* view) { | |
26 if (view->connection()->GetRoot() == view) | |
27 delete view->connection(); | |
28 else | |
29 view->Destroy(); | |
30 } | |
31 | |
32 void ScopedViewPtr::DetachFromView() { | |
33 if (!view_) | |
34 return; | |
35 | |
36 view_->RemoveObserver(this); | |
37 view_ = nullptr; | |
38 } | |
39 | |
40 void ScopedViewPtr::OnViewDestroying(View* view) { | |
41 DCHECK_EQ(view_, view); | |
42 DetachFromView(); | |
43 } | |
44 | |
45 } // namespace mojo | |
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