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// Copyright (c) 2006-2008 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 CHROME_BROWSER_BOOKMARKS_BOOKMARK_DRAG_DATA_
#define CHROME_BROWSER_BOOKMARKS_BOOKMARK_DRAG_DATA_
#include <vector>
#include "chrome/browser/history/history.h"
#include "googleurl/src/gurl.h"
class BookmarkModel;
class BookmarkNode;
class OSExchangeData;
class Pickle;
class Profile;
// BookmarkDragData is used to represent the following:
//
// . A single URL.
// . A single node from the bookmark model.
// . A set of nodes from the bookmark model.
//
// BookmarkDragData is used by bookmark related views to represent a dragged
// bookmark or bookmarks.
//
// Typical usage when writing data for a drag is:
// BookmarkDragData data(node_user_is_dragging);
// data.Write(os_exchange_data_for_drag);
//
// Typical usage to read is:
// BookmarkDragData data;
// if (data.Read(os_exchange_data))
// // data is valid, contents are in elements.
struct BookmarkDragData {
// Element represents a single node.
struct Element {
explicit Element(BookmarkNode* node);
Element() : is_url(false), id_(0) {}
// If true, this element represents a URL.
bool is_url;
// The URL, only valid if is_url is true.
GURL url;
// Title of the entry, used for both urls and groups/folders.
std::wstring title;
// Children, only used for non-URL nodes.
std::vector<Element> children;
private:
friend struct BookmarkDragData;
// For reading/writing this Element.
void WriteToPickle(Pickle* pickle) const;
bool ReadFromPickle(Pickle* pickle, void** iterator);
// ID of the node.
int id_;
};
BookmarkDragData() { }
// Created a BookmarkDragData populated from the arguments.
explicit BookmarkDragData(BookmarkNode* node);
explicit BookmarkDragData(const std::vector<BookmarkNode*>& nodes);
// Writes elements to data. If there is only one element and it is a URL
// the URL and title are written to the clipboard in a format other apps can
// use.
void Write(Profile* profile, OSExchangeData* data) const;
// Restores this data from the clipboard, returning true on success.
bool Read(const OSExchangeData& data);
// Returns the nodes represented by this DragData. If this DragData was
// created from the same profile then the nodes from the model are returned.
// If the nodes can't be found (may have been deleted), an empty vector is
// returned.
std::vector<BookmarkNode*> GetNodes(Profile* profile) const;
// Convenience for getting the first node. Returns NULL if the data doesn't
// match any nodes or there is more than one node.
BookmarkNode* GetFirstNode(Profile* profile) const;
// Do we contain valid data?
bool is_valid() const { return !elements.empty(); }
// Returns true if there is a single url.
bool has_single_url() const { return is_valid() && elements[0].is_url; }
// Number of elements.
size_t size() const { return elements.size(); }
// Returns true if this data is from the specified profile.
bool IsFromProfile(Profile* profile) const;
// The actual elements written to the clipboard.
std::vector<Element> elements;
private:
// Path of the profile we originated from.
std::wstring profile_path_;
};
#endif // CHROME_BROWSER_BOOKMARKS_BOOKMARK_DRAG_DATA_
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