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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_WEB_CONTENTS_FRAME_TREE_NODE_H_
#define CONTENT_BROWSER_WEB_CONTENTS_FRAME_TREE_NODE_H_
#include <string>
#include <vector>
#include "base/basictypes.h"
#include "content/common/content_export.h"
#include "googleurl/src/gurl.h"
namespace content {
// Any page that contains iframes has a tree structure of the frames in the
// renderer process. We are mirroring this tree in the browser process. This
// class represents a node in this tree and is a wrapper for all objects that
// are frame-specific (as opposed to page-specific).
class CONTENT_EXPORT FrameTreeNode {
public:
FrameTreeNode(int64 frame_id, const std::string& name);
~FrameTreeNode();
// This method takes ownership of the child pointer.
void AddChild(FrameTreeNode* child);
void RemoveChild(int64 child_id);
int64 frame_id() const {
return frame_id_;
}
const std::string& frame_name() const {
return frame_name_;
}
size_t child_count() const {
return children_.size();
}
FrameTreeNode* child_at(size_t index) const {
return children_[index];
}
const GURL& current_url() const {
return current_url_;
}
void set_current_url(const GURL& url) {
current_url_ = url;
}
private:
// The unique identifier for the frame in the page.
int64 frame_id_;
// The assigned name of the frame. This name can be empty, unlike the unique
// name generated internally in the DOM tree.
std::string frame_name_;
// The immediate children of this specific frame.
std::vector<FrameTreeNode*> children_;
// Track the current frame's last committed URL, so we can estimate the
// process impact of out-of-process iframes.
// TODO(creis): Remove this when we can store subframe URLs in the
// NavigationController.
GURL current_url_;
DISALLOW_COPY_AND_ASSIGN(FrameTreeNode);
};
} // namespace content
#endif // CONTENT_BROWSER_WEB_CONTENTS_FRAME_TREE_NODE_H_
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