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Side by Side Diff: mojo/services/public/cpp/view_manager/view_tracker.cc

Issue 728133002: Update mojo sdk to rev e01f9a49449381a5eb430c1fd88bf2cae73ec35a (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: android + ios gyp fixes Created 6 years, 1 month 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 #include "mojo/services/public/cpp/view_manager/view_tracker.h"
6
7 namespace mojo {
8
9 ViewTracker::ViewTracker() {
10 }
11
12 ViewTracker::~ViewTracker() {
13 for (Views::iterator i = views_.begin(); i != views_.end(); ++i)
14 (*i)->RemoveObserver(this);
15 }
16
17 void ViewTracker::Add(View* view) {
18 if (views_.count(view))
19 return;
20
21 view->AddObserver(this);
22 views_.insert(view);
23 }
24
25 void ViewTracker::Remove(View* view) {
26 if (views_.count(view)) {
27 views_.erase(view);
28 view->RemoveObserver(this);
29 }
30 }
31
32 bool ViewTracker::Contains(View* view) {
33 return views_.count(view) > 0;
34 }
35
36 void ViewTracker::OnViewDestroying(View* view) {
37 DCHECK_GT(views_.count(view), 0u);
38 Remove(view);
39 }
40
41 } // namespace mojo
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