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Side by Side Diff: mojo/services/public/cpp/view_manager/view_tree_node.h

Issue 274733004: Deletion/ownership (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: . Created 6 years, 7 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 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 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 MOJO_SERVICES_PUBLIC_CPP_VIEW_MANAGER_VIEW_TREE_NODE_H_ 5 #ifndef MOJO_SERVICES_PUBLIC_CPP_VIEW_MANAGER_VIEW_TREE_NODE_H_
6 #define MOJO_SERVICES_PUBLIC_CPP_VIEW_MANAGER_VIEW_TREE_NODE_H_ 6 #define MOJO_SERVICES_PUBLIC_CPP_VIEW_MANAGER_VIEW_TREE_NODE_H_
7 7
8 #include <vector> 8 #include <vector>
9 9
10 #include "base/basictypes.h" 10 #include "base/basictypes.h"
11 #include "base/observer_list.h" 11 #include "base/observer_list.h"
12 #include "mojo/services/public/cpp/view_manager/view_manager_types.h" 12 #include "mojo/services/public/cpp/view_manager/view_manager_types.h"
13 13
14 namespace mojo { 14 namespace mojo {
15 namespace services { 15 namespace services {
16 namespace view_manager { 16 namespace view_manager {
17 17
18 class ViewManager; 18 class ViewManager;
19 class ViewTreeNodeObserver; 19 class ViewTreeNodeObserver;
20 20
21 class ViewTreeNode { 21 class ViewTreeNode {
sky 2014/05/08 18:18:38 You should document ownership here.
22 public: 22 public:
23 typedef std::vector<ViewTreeNode*> Children; 23 typedef std::vector<ViewTreeNode*> Children;
24 24
25 explicit ViewTreeNode(ViewManager* manager); 25 static ViewTreeNode* Create(ViewManager* view_manager);
26 ViewTreeNode(); // Used for tests. 26
27 ~ViewTreeNode(); 27 // Destroys this node and all its children.
28 void Destroy();
28 29
29 // Configuration. 30 // Configuration.
30 TransportNodeId id() const { return id_; } 31 TransportNodeId id() const { return id_; }
31 void set_owned_by_parent(bool owned_by_parent) {
32 owned_by_parent_ = owned_by_parent;
33 }
34 32
35 // Observation. 33 // Observation.
36 void AddObserver(ViewTreeNodeObserver* observer); 34 void AddObserver(ViewTreeNodeObserver* observer);
37 void RemoveObserver(ViewTreeNodeObserver* observer); 35 void RemoveObserver(ViewTreeNodeObserver* observer);
38 36
39 // Tree. 37 // Tree.
40 ViewTreeNode* parent() { return parent_; } 38 ViewTreeNode* parent() { return parent_; }
41 const ViewTreeNode* parent() const { return parent_; } 39 const ViewTreeNode* parent() const { return parent_; }
42 const Children& children() const { return children_; } 40 const Children& children() const { return children_; }
43 41
44 void AddChild(ViewTreeNode* child); 42 void AddChild(ViewTreeNode* child);
45 void RemoveChild(ViewTreeNode* child); 43 void RemoveChild(ViewTreeNode* child);
46 44
47 bool Contains(ViewTreeNode* child) const; 45 bool Contains(ViewTreeNode* child) const;
48 46
49 ViewTreeNode* GetChildById(TransportNodeId id); 47 ViewTreeNode* GetChildById(TransportNodeId id);
50 48
49 protected:
50 // This class is subclassed only by test classes that provide a public ctor.
51 ViewTreeNode();
52 ~ViewTreeNode();
53
51 private: 54 private:
52 friend class ViewTreeNodePrivate; 55 friend class ViewTreeNodePrivate;
53 56
57 explicit ViewTreeNode(ViewManager* manager);
58
59 void LocalDestroy();
54 void LocalAddChild(ViewTreeNode* child); 60 void LocalAddChild(ViewTreeNode* child);
55 void LocalRemoveChild(ViewTreeNode* child); 61 void LocalRemoveChild(ViewTreeNode* child);
56 62
57 ViewManager* manager_; 63 ViewManager* manager_;
58 TransportNodeId id_; 64 TransportNodeId id_;
59 bool owned_by_parent_;
60 ViewTreeNode* parent_; 65 ViewTreeNode* parent_;
61 Children children_; 66 Children children_;
62 67
63 ObserverList<ViewTreeNodeObserver> observers_; 68 ObserverList<ViewTreeNodeObserver> observers_;
64 69
65 DISALLOW_COPY_AND_ASSIGN(ViewTreeNode); 70 DISALLOW_COPY_AND_ASSIGN(ViewTreeNode);
66 }; 71 };
67 72
68 } // namespace view_manager 73 } // namespace view_manager
69 } // namespace services 74 } // namespace services
70 } // namespace mojo 75 } // namespace mojo
71 76
72 #endif // MOJO_SERVICES_PUBLIC_CPP_VIEW_MANAGER_VIEW_TREE_NODE_H_ 77 #endif // MOJO_SERVICES_PUBLIC_CPP_VIEW_MANAGER_VIEW_TREE_NODE_H_
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