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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_PUBLIC_BROWSER_RENDER_FRAME_HOST_H_ | 5 #ifndef CONTENT_PUBLIC_BROWSER_RENDER_FRAME_HOST_H_ |
| 6 #define CONTENT_PUBLIC_BROWSER_RENDER_FRAME_HOST_H_ | 6 #define CONTENT_PUBLIC_BROWSER_RENDER_FRAME_HOST_H_ |
| 7 | 7 |
| 8 #include <string> | 8 #include <string> |
| 9 | 9 |
| 10 #include "base/callback_forward.h" | 10 #include "base/callback_forward.h" |
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| 71 virtual SiteInstance* GetSiteInstance() = 0; | 71 virtual SiteInstance* GetSiteInstance() = 0; |
| 72 | 72 |
| 73 // Returns the process for this frame. | 73 // Returns the process for this frame. |
| 74 virtual RenderProcessHost* GetProcess() = 0; | 74 virtual RenderProcessHost* GetProcess() = 0; |
| 75 | 75 |
| 76 // Returns the current RenderFrameHost of the parent frame, or nullptr if | 76 // Returns the current RenderFrameHost of the parent frame, or nullptr if |
| 77 // there is no parent. The result may be in a different process than the | 77 // there is no parent. The result may be in a different process than the |
| 78 // current RenderFrameHost. | 78 // current RenderFrameHost. |
| 79 virtual RenderFrameHost* GetParent() = 0; | 79 virtual RenderFrameHost* GetParent() = 0; |
| 80 | 80 |
| 81 // Calls |on_frame| for each child frame of this RenderFrameHost. |
| 82 // Note: The RenderFrameHost parameter is not guaranteed to have a live |
| 83 // RenderFrame counterpart in the renderer process. Callbacks should check |
| 84 // IsRenderFrameLive, as sending IPC messages to it in this case will fail |
| 85 // silently. |
| 86 virtual void ForEachChildFrame( |
| 87 const base::Callback<void(RenderFrameHost*)>& on_frame) = 0; |
| 88 |
| 81 // Returns the FrameTreeNode ID for this frame. This ID is browser-global and | 89 // Returns the FrameTreeNode ID for this frame. This ID is browser-global and |
| 82 // uniquely identifies a frame that hosts content. The identifier is fixed at | 90 // uniquely identifies a frame that hosts content. The identifier is fixed at |
| 83 // the creation of the frame and stays constant for the lifetime of the frame. | 91 // the creation of the frame and stays constant for the lifetime of the frame. |
| 84 // When the frame is removed, the ID is not used again. | 92 // When the frame is removed, the ID is not used again. |
| 85 // | 93 // |
| 86 // A RenderFrameHost is tied to a process. Due to cross-process navigations, | 94 // A RenderFrameHost is tied to a process. Due to cross-process navigations, |
| 87 // the RenderFrameHost may have a shorter lifetime than a frame. Consequently, | 95 // the RenderFrameHost may have a shorter lifetime than a frame. Consequently, |
| 88 // the same FrameTreeNode ID may refer to a different RenderFrameHost after a | 96 // the same FrameTreeNode ID may refer to a different RenderFrameHost after a |
| 89 // navigation. | 97 // navigation. |
| 90 virtual int GetFrameTreeNodeId() = 0; | 98 virtual int GetFrameTreeNodeId() = 0; |
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| 199 | 207 |
| 200 private: | 208 private: |
| 201 // This interface should only be implemented inside content. | 209 // This interface should only be implemented inside content. |
| 202 friend class RenderFrameHostImpl; | 210 friend class RenderFrameHostImpl; |
| 203 RenderFrameHost() {} | 211 RenderFrameHost() {} |
| 204 }; | 212 }; |
| 205 | 213 |
| 206 } // namespace content | 214 } // namespace content |
| 207 | 215 |
| 208 #endif // CONTENT_PUBLIC_BROWSER_RENDER_FRAME_HOST_H_ | 216 #endif // CONTENT_PUBLIC_BROWSER_RENDER_FRAME_HOST_H_ |
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