1// Copyright (c) 2011 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 CHROME_BROWSER_UI_WEBUI_COOKIES_TREE_MODEL_ADAPTER_H_
6#define CHROME_BROWSER_UI_WEBUI_COOKIES_TREE_MODEL_ADAPTER_H_
7#pragma once
8
9#include "chrome/browser/cookies_tree_model.h"
10
11class ListValue;
12class Value;
13class WebUI;
14
15// CookiesTreeModelAdapter binds a CookiesTreeModel with a JS tree. It observes
16// tree model changes and forwards them to JS tree. It also provides a
17// a callback for JS tree to load children of a specific node.
18class CookiesTreeModelAdapter : public CookiesTreeModel::Observer {
19 public:
20  CookiesTreeModelAdapter();
21  virtual ~CookiesTreeModelAdapter();
22
23  // Initializes with given WebUI.
24  void Init(WebUI* web_ui);
25
26  // Sets up the bindings between js tree and |model|.
27  // Note that this class does not take ownership of the model.
28  void Bind(const std::string& tree_id, CookiesTreeModel* model);
29
30 private:
31  // CookiesTreeModel::Observer implementation.
32  virtual void TreeNodesAdded(ui::TreeModel* model,
33                              ui::TreeModelNode* parent,
34                              int start,
35                              int count);
36  virtual void TreeNodesRemoved(ui::TreeModel* model,
37                                ui::TreeModelNode* parent,
38                                int start,
39                                int count);
40  virtual void TreeNodeChanged(ui::TreeModel* model, ui::TreeModelNode* node) {}
41  virtual void TreeModelBeginBatch(CookiesTreeModel* model);
42  virtual void TreeModelEndBatch(CookiesTreeModel* model);
43
44  // JS callback that gets the tree node using the tree path info in |args| and
45  // call SendChildren to pass back children nodes data to WebUI.
46  void RequestChildren(const ListValue* args);
47
48  // Get children nodes data and pass it to 'CookiesTree.loadChildren' to
49  // update the WebUI.
50  void SendChildren(CookieTreeNode* parent);
51
52  // Helper function to get a Value* representing id of |node|.
53  // Caller needs to free the returned Value.
54  Value* GetTreeNodeId(CookieTreeNode* node);
55
56  // Hosting WebUI of the js tree.
57  WebUI* web_ui_;
58
59  // Id of JS tree that is managed by this handler.
60  std::string tree_id_;
61
62  // The Cookies Tree model. Note that we are not owning the model.
63  CookiesTreeModel* model_;
64
65  // Flag to indicate whether there is a batch update in progress.
66  bool batch_update_;
67
68  DISALLOW_COPY_AND_ASSIGN(CookiesTreeModelAdapter);
69};
70
71#endif  // CHROME_BROWSER_UI_WEBUI_COOKIES_TREE_MODEL_ADAPTER_H_
72