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 3 // found in the LICENSE file. 4 5 #ifndef CONTENT_BROWSER_WEB_CONTENTS_FRAME_TREE_NODE_H_ 6 #define CONTENT_BROWSER_WEB_CONTENTS_FRAME_TREE_NODE_H_ 7 8 #include <string> 9 10 #include "base/basictypes.h" 11 #include "base/memory/scoped_vector.h" 12 #include "content/common/content_export.h" 13 #include "url/gurl.h" 14 15 namespace content { 16 17 // Any page that contains iframes has a tree structure of the frames in the 18 // renderer process. We are mirroring this tree in the browser process. This 19 // class represents a node in this tree and is a wrapper for all objects that 20 // are frame-specific (as opposed to page-specific). 21 class CONTENT_EXPORT FrameTreeNode { 22 public: 23 FrameTreeNode(int64 frame_id, const std::string& name); 24 ~FrameTreeNode(); 25 26 // This method takes ownership of the child pointer. 27 void AddChild(FrameTreeNode* child); 28 void RemoveChild(int64 child_id); 29 30 int64 frame_id() const { 31 return frame_id_; 32 } 33 34 const std::string& frame_name() const { 35 return frame_name_; 36 } 37 38 size_t child_count() const { 39 return children_.size(); 40 } 41 42 FrameTreeNode* child_at(size_t index) const { 43 return children_[index]; 44 } 45 46 const GURL& current_url() const { 47 return current_url_; 48 } 49 50 void set_current_url(const GURL& url) { 51 current_url_ = url; 52 } 53 54 private: 55 // The unique identifier for the frame in the page. 56 int64 frame_id_; 57 58 // The assigned name of the frame. This name can be empty, unlike the unique 59 // name generated internally in the DOM tree. 60 std::string frame_name_; 61 62 // The immediate children of this specific frame. 63 ScopedVector<FrameTreeNode> children_; 64 65 // Track the current frame's last committed URL, so we can estimate the 66 // process impact of out-of-process iframes. 67 // TODO(creis): Remove this when we can store subframe URLs in the 68 // NavigationController. 69 GURL current_url_; 70 71 DISALLOW_COPY_AND_ASSIGN(FrameTreeNode); 72 }; 73 74 } // namespace content 75 76 #endif // CONTENT_BROWSER_WEB_CONTENTS_FRAME_TREE_NODE_H_ 77