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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 /* | 5 /* |
6 * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. | 6 * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. |
7 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. | 7 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. |
8 * (http://www.torchmobile.com/) | 8 * (http://www.torchmobile.com/) |
9 * | 9 * |
10 * Redistribution and use in source and binary forms, with or without | 10 * Redistribution and use in source and binary forms, with or without |
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31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
33 */ | 33 */ |
34 | 34 |
35 #ifndef CONTENT_RENDERER_HISTORY_ENTRY_H_ | 35 #ifndef CONTENT_RENDERER_HISTORY_ENTRY_H_ |
36 #define CONTENT_RENDERER_HISTORY_ENTRY_H_ | 36 #define CONTENT_RENDERER_HISTORY_ENTRY_H_ |
37 | 37 |
38 #include "base/containers/hash_tables.h" | 38 #include "base/containers/hash_tables.h" |
39 #include "base/memory/scoped_ptr.h" | 39 #include "base/memory/scoped_ptr.h" |
40 #include "base/memory/scoped_vector.h" | 40 #include "base/memory/scoped_vector.h" |
| 41 #include "base/memory/weak_ptr.h" |
41 #include "content/common/content_export.h" | 42 #include "content/common/content_export.h" |
42 #include "third_party/WebKit/public/platform/WebURLRequest.h" | 43 #include "third_party/WebKit/public/platform/WebURLRequest.h" |
43 #include "third_party/WebKit/public/web/WebHistoryItem.h" | 44 #include "third_party/WebKit/public/web/WebHistoryItem.h" |
44 | 45 |
45 namespace blink { | 46 namespace blink { |
46 class WebFrame; | 47 class WebFrame; |
47 } | 48 } |
48 | 49 |
49 namespace content { | 50 namespace content { |
50 class RenderFrameImpl; | 51 class RenderFrameImpl; |
51 class RenderViewImpl; | 52 class RenderViewImpl; |
52 | 53 |
53 const int kInvalidFrameRoutingID = -1; | 54 const int kInvalidFrameRoutingID = -1; |
54 | 55 |
55 class CONTENT_EXPORT HistoryEntry { | 56 class CONTENT_EXPORT HistoryEntry { |
56 public: | 57 public: |
57 class HistoryNode { | 58 class HistoryNode { |
58 public: | 59 public: |
59 HistoryNode(HistoryEntry* entry, | 60 HistoryNode(const base::WeakPtr<HistoryEntry>& entry, |
60 const blink::WebHistoryItem& item, | 61 const blink::WebHistoryItem& item); |
61 int64_t frame_id); | |
62 ~HistoryNode(); | 62 ~HistoryNode(); |
63 | 63 |
64 HistoryNode* AddChild(const blink::WebHistoryItem& item, int64_t frame_id); | 64 HistoryNode* AddChild(const blink::WebHistoryItem& item); |
65 HistoryNode* AddChild(); | 65 HistoryNode* AddChild(); |
66 HistoryNode* CloneAndReplace(HistoryEntry* new_entry, | 66 HistoryNode* CloneAndReplace(const base::WeakPtr<HistoryEntry>& new_entry, |
67 const blink::WebHistoryItem& new_item, | 67 const blink::WebHistoryItem& new_item, |
68 bool clone_children_of_target, | 68 bool clone_children_of_target, |
69 RenderFrameImpl* target_frame, | 69 RenderFrameImpl* target_frame, |
70 RenderFrameImpl* current_frame); | 70 RenderFrameImpl* current_frame); |
71 blink::WebHistoryItem& item() { return item_; } | 71 blink::WebHistoryItem& item() { return item_; } |
72 void set_item(const blink::WebHistoryItem& item); | 72 void set_item(const blink::WebHistoryItem& item); |
73 std::vector<HistoryNode*>& children() const { return children_->get(); } | 73 std::vector<HistoryNode*>& children() const { return children_->get(); } |
74 void RemoveChildren(); | 74 void RemoveChildren(); |
75 | 75 |
76 private: | 76 private: |
77 HistoryEntry* entry_; | 77 // When a HistoryEntry is destroyed, it takes all its HistoryNodes with it. |
| 78 // Use a WeakPtr to ensure that HistoryNodes don't try to illegally access |
| 79 // a dying HistoryEntry, or do unnecessary work when the whole entry is |
| 80 // being destroyed. |
| 81 base::WeakPtr<HistoryEntry> entry_; |
78 scoped_ptr<ScopedVector<HistoryNode> > children_; | 82 scoped_ptr<ScopedVector<HistoryNode> > children_; |
79 blink::WebHistoryItem item_; | 83 blink::WebHistoryItem item_; |
| 84 // We need to track multiple names because the name of a frame can change |
| 85 // over its lifetime. This allows us to clean up all of the names this node |
| 86 // has ever known by when it is destroyed. |
| 87 std::vector<std::string> unique_names_; |
80 }; | 88 }; |
81 | 89 |
82 HistoryEntry(const blink::WebHistoryItem& root, int64_t frame_id); | 90 HistoryEntry(const blink::WebHistoryItem& root); |
83 HistoryEntry(); | 91 HistoryEntry(); |
84 ~HistoryEntry(); | 92 ~HistoryEntry(); |
85 | 93 |
86 HistoryEntry* CloneAndReplace(const blink::WebHistoryItem& newItem, | 94 HistoryEntry* CloneAndReplace(const blink::WebHistoryItem& newItem, |
87 bool clone_children_of_target, | 95 bool clone_children_of_target, |
88 RenderFrameImpl* target_frame, | 96 RenderFrameImpl* target_frame, |
89 RenderViewImpl* render_view); | 97 RenderViewImpl* render_view); |
90 | 98 |
91 HistoryNode* GetHistoryNodeForFrame(RenderFrameImpl* frame); | 99 HistoryNode* GetHistoryNodeForFrame(RenderFrameImpl* frame); |
92 blink::WebHistoryItem GetItemForFrame(RenderFrameImpl* frame); | 100 blink::WebHistoryItem GetItemForFrame(RenderFrameImpl* frame); |
93 const blink::WebHistoryItem& root() const { return root_->item(); } | 101 const blink::WebHistoryItem& root() const { return root_->item(); } |
94 HistoryNode* root_history_node() const { return root_.get(); } | 102 HistoryNode* root_history_node() const { return root_.get(); } |
95 | 103 |
96 private: | 104 private: |
97 | |
98 scoped_ptr<HistoryNode> root_; | 105 scoped_ptr<HistoryNode> root_; |
99 | 106 |
100 typedef base::hash_map<uint64_t, HistoryNode*> FramesToItems; | |
101 FramesToItems frames_to_items_; | |
102 | |
103 typedef base::hash_map<std::string, HistoryNode*> UniqueNamesToItems; | 107 typedef base::hash_map<std::string, HistoryNode*> UniqueNamesToItems; |
104 UniqueNamesToItems unique_names_to_items_; | 108 UniqueNamesToItems unique_names_to_items_; |
| 109 |
| 110 base::WeakPtrFactory<HistoryEntry> weak_ptr_factory_; |
105 }; | 111 }; |
106 | 112 |
107 } // namespace content | 113 } // namespace content |
108 | 114 |
109 #endif // CONTENT_RENDERER_HISTORY_ENTRY_H_ | 115 #endif // CONTENT_RENDERER_HISTORY_ENTRY_H_ |
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