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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 CONTENT_BROWSER_FRAME_HOST_FRAME_TREE_NODE_H_ | 5 #ifndef CONTENT_BROWSER_FRAME_HOST_FRAME_TREE_NODE_H_ |
6 #define CONTENT_BROWSER_FRAME_HOST_FRAME_TREE_NODE_H_ | 6 #define CONTENT_BROWSER_FRAME_HOST_FRAME_TREE_NODE_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 | 9 |
10 #include "base/basictypes.h" | 10 #include "base/basictypes.h" |
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23 class FrameTree; | 23 class FrameTree; |
24 class Navigator; | 24 class Navigator; |
25 class RenderFrameHostImpl; | 25 class RenderFrameHostImpl; |
26 | 26 |
27 // When a page contains iframes, its renderer process maintains a tree structure | 27 // When a page contains iframes, its renderer process maintains a tree structure |
28 // of those frames. We are mirroring this tree in the browser process. This | 28 // of those frames. We are mirroring this tree in the browser process. This |
29 // class represents a node in this tree and is a wrapper for all objects that | 29 // class represents a node in this tree and is a wrapper for all objects that |
30 // are frame-specific (as opposed to page-specific). | 30 // are frame-specific (as opposed to page-specific). |
31 class CONTENT_EXPORT FrameTreeNode { | 31 class CONTENT_EXPORT FrameTreeNode { |
32 public: | 32 public: |
33 | |
34 FrameTreeNode(FrameTree* frame_tree, | 33 FrameTreeNode(FrameTree* frame_tree, |
35 Navigator* navigator, | 34 Navigator* navigator, |
36 RenderFrameHostDelegate* render_frame_delegate, | 35 RenderFrameHostDelegate* render_frame_delegate, |
37 RenderViewHostDelegate* render_view_delegate, | 36 RenderViewHostDelegate* render_view_delegate, |
38 RenderWidgetHostDelegate* render_widget_delegate, | 37 RenderWidgetHostDelegate* render_widget_delegate, |
39 RenderFrameHostManager::Delegate* manager_delegate, | 38 RenderFrameHostManager::Delegate* manager_delegate, |
40 const std::string& name); | 39 const std::string& name); |
41 | 40 |
42 ~FrameTreeNode(); | 41 ~FrameTreeNode(); |
43 | 42 |
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106 bool CommitPendingSandboxFlags(); | 105 bool CommitPendingSandboxFlags(); |
107 | 106 |
108 bool HasSameOrigin(const FrameTreeNode& node) const { | 107 bool HasSameOrigin(const FrameTreeNode& node) const { |
109 return replication_state_.origin.IsSameAs(node.replication_state_.origin); | 108 return replication_state_.origin.IsSameAs(node.replication_state_.origin); |
110 } | 109 } |
111 | 110 |
112 const FrameReplicationState& current_replication_state() const { | 111 const FrameReplicationState& current_replication_state() const { |
113 return replication_state_; | 112 return replication_state_; |
114 } | 113 } |
115 | 114 |
116 void set_is_loading(bool is_loading) { | |
117 is_loading_ = is_loading; | |
118 } | |
119 bool is_loading() const { | |
120 return is_loading_; | |
121 } | |
122 | |
123 RenderFrameHostImpl* current_frame_host() const { | 115 RenderFrameHostImpl* current_frame_host() const { |
124 return render_manager_.current_frame_host(); | 116 return render_manager_.current_frame_host(); |
125 } | 117 } |
126 | 118 |
127 bool IsDescendantOf(FrameTreeNode* other) const; | 119 bool IsDescendantOf(FrameTreeNode* other) const; |
128 | 120 |
| 121 // Returns true if this frame is in a loading state. |
| 122 bool IsLoading() const; |
| 123 |
| 124 // Returns the loading progress of this frame. |
| 125 double GetLoadingProgress() const; |
| 126 |
129 private: | 127 private: |
130 void set_parent(FrameTreeNode* parent) { parent_ = parent; } | 128 void set_parent(FrameTreeNode* parent) { parent_ = parent; } |
131 | 129 |
132 // The next available browser-global FrameTreeNode ID. | 130 // The next available browser-global FrameTreeNode ID. |
133 static int64 next_frame_tree_node_id_; | 131 static int64 next_frame_tree_node_id_; |
134 | 132 |
135 // The FrameTree that owns us. | 133 // The FrameTree that owns us. |
136 FrameTree* frame_tree_; // not owned. | 134 FrameTree* frame_tree_; // not owned. |
137 | 135 |
138 // The Navigator object responsible for managing navigations at this node | 136 // The Navigator object responsible for managing navigations at this node |
139 // of the frame tree. | 137 // of the frame tree. |
140 scoped_refptr<Navigator> navigator_; | 138 scoped_refptr<Navigator> navigator_; |
141 | 139 |
142 // Manages creation and swapping of RenderFrameHosts for this frame. This | 140 // Manages creation and swapping of RenderFrameHosts for this frame. This |
143 // must be declared before |children_| so that it gets deleted after them. | 141 // must be declared before |children_| so that it gets deleted after them. |
144 // That's currently necessary so that RenderFrameHostImpl's destructor can | 142 // That's currently necessary so that RenderFrameHostImpl's destructor can |
145 // call GetProcess. | 143 // call GetProcess. |
146 RenderFrameHostManager render_manager_; | 144 RenderFrameHostManager render_manager_; |
147 | 145 |
148 // A browser-global identifier for the frame in the page, which stays stable | 146 // A browser-global identifier for the frame in the page, which stays stable |
149 // even if the frame does a cross-process navigation. | 147 // even if the frame does a cross-process navigation. |
150 const int64 frame_tree_node_id_; | 148 const int64 frame_tree_node_id_; |
151 | 149 |
152 // The parent node of this frame. NULL if this node is the root or if it has | 150 // The parent node of this frame. NULL if this node is the root or if it has |
153 // not yet been attached to the frame tree. | 151 // not yet been attached to the frame tree. |
154 FrameTreeNode* parent_; | 152 FrameTreeNode* parent_; |
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169 // Track the effective sandbox flags for this frame. When a parent frame | 167 // Track the effective sandbox flags for this frame. When a parent frame |
170 // dynamically updates sandbox flags for a child frame, the child's updated | 168 // dynamically updates sandbox flags for a child frame, the child's updated |
171 // sandbox flags are stored in replication_state_.sandbox_flags. However, the | 169 // sandbox flags are stored in replication_state_.sandbox_flags. However, the |
172 // update only takes effect on the next frame navigation, so the effective | 170 // update only takes effect on the next frame navigation, so the effective |
173 // sandbox flags are tracked separately here. When enforcing sandbox flags | 171 // sandbox flags are tracked separately here. When enforcing sandbox flags |
174 // directives in the browser process, |effective_sandbox_flags_| should be | 172 // directives in the browser process, |effective_sandbox_flags_| should be |
175 // used. |effective_sandbox_flags_| is updated with any pending sandbox | 173 // used. |effective_sandbox_flags_| is updated with any pending sandbox |
176 // flags when a navigation for this frame commits. | 174 // flags when a navigation for this frame commits. |
177 SandboxFlags effective_sandbox_flags_; | 175 SandboxFlags effective_sandbox_flags_; |
178 | 176 |
179 // Boolean value indicating whether the frame is in the process of loading | |
180 // a document or not. In cross-process transfer navigation the DidStartLoading | |
181 // message is received from both existing RenderFrame and from the pending | |
182 // RenderFrame. However, there will be only one DidStopLoading message sent by | |
183 // the pending-which-becomes-current RenderFrame. Since both renderers belong | |
184 // to the FrameTreeNode, it is better to ask it about the loading status than | |
185 // RenderFrameHost or using a counter to balance the events out. | |
186 bool is_loading_; | |
187 | |
188 DISALLOW_COPY_AND_ASSIGN(FrameTreeNode); | 177 DISALLOW_COPY_AND_ASSIGN(FrameTreeNode); |
189 }; | 178 }; |
190 | 179 |
191 } // namespace content | 180 } // namespace content |
192 | 181 |
193 #endif // CONTENT_BROWSER_FRAME_HOST_FRAME_TREE_NODE_H_ | 182 #endif // CONTENT_BROWSER_FRAME_HOST_FRAME_TREE_NODE_H_ |
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