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// Copyright 2014 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.
/*
* Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
* Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
* (http://www.torchmobile.com/)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef CONTENT_RENDERER_HISTORY_ENTRY_H_
#define CONTENT_RENDERER_HISTORY_ENTRY_H_
#include "base/containers/hash_tables.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/scoped_vector.h"
#include "base/memory/weak_ptr.h"
#include "content/common/content_export.h"
#include "third_party/WebKit/public/platform/WebURLRequest.h"
#include "third_party/WebKit/public/web/WebHistoryItem.h"
namespace blink {
class WebFrame;
}
namespace content {
class RenderFrameImpl;
class RenderViewImpl;
const int kInvalidFrameRoutingID = -1;
class CONTENT_EXPORT HistoryEntry {
public:
class HistoryNode {
public:
HistoryNode(const base::WeakPtr<HistoryEntry>& entry,
const blink::WebHistoryItem& item);
~HistoryNode();
HistoryNode* AddChild(const blink::WebHistoryItem& item);
HistoryNode* AddChild();
HistoryNode* CloneAndReplace(const base::WeakPtr<HistoryEntry>& new_entry,
const blink::WebHistoryItem& new_item,
bool clone_children_of_target,
RenderFrameImpl* target_frame,
RenderFrameImpl* current_frame);
blink::WebHistoryItem& item() { return item_; }
void set_item(const blink::WebHistoryItem& item);
std::vector<HistoryNode*>& children() const { return children_->get(); }
void RemoveChildren();
private:
// When a HistoryEntry is destroyed, it takes all its HistoryNodes with it.
// Use a WeakPtr to ensure that HistoryNodes don't try to illegally access
// a dying HistoryEntry, or do unnecessary work when the whole entry is
// being destroyed.
base::WeakPtr<HistoryEntry> entry_;
scoped_ptr<ScopedVector<HistoryNode> > children_;
blink::WebHistoryItem item_;
// We need to track multiple names because the name of a frame can change
// over its lifetime. This allows us to clean up all of the names this node
// has ever known by when it is destroyed.
std::vector<std::string> unique_names_;
};
HistoryEntry(const blink::WebHistoryItem& root);
HistoryEntry();
~HistoryEntry();
HistoryEntry* CloneAndReplace(const blink::WebHistoryItem& newItem,
bool clone_children_of_target,
RenderFrameImpl* target_frame,
RenderViewImpl* render_view);
HistoryNode* GetHistoryNodeForFrame(RenderFrameImpl* frame);
blink::WebHistoryItem GetItemForFrame(RenderFrameImpl* frame);
const blink::WebHistoryItem& root() const { return root_->item(); }
HistoryNode* root_history_node() const { return root_.get(); }
private:
scoped_ptr<HistoryNode> root_;
typedef base::hash_map<std::string, HistoryNode*> UniqueNamesToItems;
UniqueNamesToItems unique_names_to_items_;
base::WeakPtrFactory<HistoryEntry> weak_ptr_factory_;
};
} // namespace content
#endif // CONTENT_RENDERER_HISTORY_ENTRY_H_
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