Remove enhanced bookmarks extension

chrome/browser/resources/enhanced_bookmark_manager/js/bmm/bookmark_tree.js

-// 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.
-
-
-cr.define('bmm', function() {
-  /**
-   * The id of the bookmark root.
-   * @type {string}
-   * @const
-   */
-  var ROOT_ID = '0';
-
-  /** @const */ var Tree = cr.ui.Tree;
-  /** @const */ var TreeItem = cr.ui.TreeItem;
-
-  var treeLookup = {};
-  var tree;
-
-  // Manager for persisting the expanded state.
-  var expandedManager = {
-    /**
-     * A map of the collapsed IDs.
-     * @type {Object}
-     */
-    map: 'bookmarkTreeState' in localStorage ?
-        JSON.parse(localStorage['bookmarkTreeState']) : {},
-
-    /**
-     * Set the collapsed state for an ID.
-     * @param {string} The bookmark ID of the tree item that was expanded or
-     *     collapsed.
-     * @param {boolean} expanded Whether the tree item was expanded.
-     */
-    set: function(id, expanded) {
-      if (expanded)
-        delete this.map[id];
-      else
-        this.map[id] = 1;
-
-      this.save();
-    },
-
-    /**
-     * @param {string} id The bookmark ID.
-     * @return {boolean} Whether the tree item should be expanded.
-     */
-    get: function(id) {
-      return !(id in this.map);
-    },
-
-    /**
-     * Callback for the expand and collapse events from the tree.
-     * @param {!Event} e The collapse or expand event.
-     */
-    handleEvent: function(e) {
-      this.set(e.target.bookmarkId, e.type == 'expand');
-    },
-
-    /**
-     * Cleans up old bookmark IDs.
-     */
-    cleanUp: function() {
-      for (var id in this.map) {
-        // If the id is no longer in the treeLookup the bookmark no longer
-        // exists.
-        if (!(id in treeLookup))
-          delete this.map[id];
-      }
-      this.save();
-    },
-
-    timer: null,
-
-    /**
-     * Saves the expanded state to the localStorage.
-     */
-    save: function() {
-      clearTimeout(this.timer);
-      var map = this.map;
-      // Save in a timeout so that we can coalesce multiple changes.
-      this.timer = setTimeout(function() {
-        localStorage['bookmarkTreeState'] = JSON.stringify(map);
-      }, 100);
-    }
-  };
-
-  // Clean up once per session but wait until things settle down a bit.
-  setTimeout(expandedManager.cleanUp.bind(expandedManager), 1e4);
-
-  /**
-   * Creates a new tree item for a bookmark node.
-   * @param {!Object} bookmarkNode The bookmark node.
-   * @constructor
-   * @extends {TreeItem}
-   */
-  function BookmarkTreeItem(bookmarkNode) {
-    var ti = new TreeItem({
-      label: bookmarkNode.title,
-      bookmarkNode: bookmarkNode,
-      // Bookmark toolbar and Other bookmarks are not draggable.
-      draggable: bookmarkNode.parentId != ROOT_ID
-    });
-    ti.__proto__ = BookmarkTreeItem.prototype;
-    treeLookup[bookmarkNode.id] = ti;
-    return ti;
-  }
-
-  BookmarkTreeItem.prototype = {
-    __proto__: TreeItem.prototype,
-
-    /**
-     * The ID of the bookmark this tree item represents.
-     * @type {string}
-     */
-    get bookmarkId() {
-      return this.bookmarkNode.id;
-    }
-  };
-
-  /**
-   * Asynchronousy adds a tree item at the correct index based on the bookmark
-   * backend.
-   *
-   * Since the bookmark tree only contains folders the index we get from certain
-   * callbacks is not very useful so we therefore have this async call which
-   * gets the children of the parent and adds the tree item at the desired
-   * index.
-   *
-   * This also exoands the parent so that newly added children are revealed.
-   *
-   * @param {!cr.ui.TreeItem} parent The parent tree item.
-   * @param {!cr.ui.TreeItem} treeItem The tree item to add.
-   * @param {Function=} f A function which gets called after the item has been
-   *     added at the right index.
-   */
-  function addTreeItem(parent, treeItem, opt_f) {
-    chrome.bookmarks.getChildren(parent.bookmarkNode.id, function(children) {
-      var index = children.filter(bmm.isFolder).map(function(item) {
-        return item.id;
-      }).indexOf(treeItem.bookmarkNode.id);
-      parent.addAt(treeItem, index);
-      parent.expanded = true;
-      if (opt_f)
-        opt_f();
-    });
-  }
-
-
-  /**
-   * Creates a new bookmark list.
-   * @param {Object=} opt_propertyBag Optional properties.
-   * @constructor
-   * @extends {HTMLButtonElement}
-   */
-  var BookmarkTree = cr.ui.define('tree');
-
-  BookmarkTree.prototype = {
-    __proto__: Tree.prototype,
-
-    decorate: function() {
-      Tree.prototype.decorate.call(this);
-      this.addEventListener('expand', expandedManager);
-      this.addEventListener('collapse', expandedManager);
-
-      bmm.tree = this;
-    },
-
-    handleBookmarkChanged: function(id, changeInfo) {
-      var treeItem = treeLookup[id];
-      if (treeItem)
-        treeItem.label = treeItem.bookmarkNode.title = changeInfo.title;
-    },
-
-    handleChildrenReordered: function(id, reorderInfo) {
-      var parentItem = treeLookup[id];
-      // The tree only contains folders.
-      var dirIds = reorderInfo.childIds.filter(function(id) {
-        return id in treeLookup;
-      }).forEach(function(id, i) {
-        parentItem.addAt(treeLookup[id], i);
-      });
-    },
-
-    handleCreated: function(id, bookmarkNode) {
-      if (bmm.isFolder(bookmarkNode)) {
-        var parentItem = treeLookup[bookmarkNode.parentId];
-        var newItem = new BookmarkTreeItem(bookmarkNode);
-        addTreeItem(parentItem, newItem);
-      }
-    },
-
-    handleMoved: function(id, moveInfo) {
-      var treeItem = treeLookup[id];
-      if (treeItem) {
-        var oldParentItem = treeLookup[moveInfo.oldParentId];
-        oldParentItem.remove(treeItem);
-        var newParentItem = treeLookup[moveInfo.parentId];
-        // The tree only shows folders so the index is not the index we want. We
-        // therefore get the children need to adjust the index.
-        addTreeItem(newParentItem, treeItem);
-      }
-    },
-
-    handleRemoved: function(id, removeInfo) {
-      var parentItem = treeLookup[removeInfo.parentId];
-      var itemToRemove = treeLookup[id];
-      if (parentItem && itemToRemove)
-        parentItem.remove(itemToRemove);
-    },
-
-    insertSubtree: function(folder) {
-      if (!bmm.isFolder(folder))
-        return;
-      var children = folder.children;
-      this.handleCreated(folder.id, folder);
-      for (var i = 0; i < children.length; i++) {
-        var child = children[i];
-        this.insertSubtree(child);
-      }
-    },
-
-    /**
-     * Returns the bookmark node with the given ID. The tree only maintains
-     * folder nodes.
-     * @param {string} id The ID of the node to find.
-     * @return {BookmarkTreeNode} The bookmark tree node or null if not found.
-     */
-    getBookmarkNodeById: function(id) {
-      var treeItem = treeLookup[id];
-      if (treeItem)
-        return treeItem.bookmarkNode;
-      return null;
-    },
-
-    /**
-      * Returns the selected bookmark folder node as an array.
-      * @type {!Array} Array of bookmark nodes.
-      */
-    get selectedFolders() {
-       return this.selectedItem && this.selectedItem.bookmarkNode ?
-           [this.selectedItem.bookmarkNode] : [];
-     },
-
-     /**
-     * Fetches the bookmark items and builds the tree control.
-     */
-    reload: function() {
-      /**
-       * Recursive helper function that adds all the directories to the
-       * parentTreeItem.
-       * @param {!cr.ui.Tree|!cr.ui.TreeItem} parentTreeItem The parent tree
-       *     element to append to.
-       * @param {!Array.<BookmarkTreeNode>} bookmarkNodes A list of bookmark
-       *     nodes to be added.
-       * @return {boolean} Whether any directories where added.
-       */
-      function buildTreeItems(parentTreeItem, bookmarkNodes) {
-        var hasDirectories = false;
-        for (var i = 0, bookmarkNode; bookmarkNode = bookmarkNodes[i]; i++) {
-          if (bmm.isFolder(bookmarkNode)) {
-            hasDirectories = true;
-            var item = new BookmarkTreeItem(bookmarkNode);
-            parentTreeItem.add(item);
-            var anyChildren = buildTreeItems(item, bookmarkNode.children);
-            item.expanded = anyChildren && expandedManager.get(bookmarkNode.id);
-          }
-        }
-        return hasDirectories;
-      }
-
-      var self = this;
-      chrome.bookmarkManagerPrivate.getSubtree('', true, function(root) {
-        self.clear();
-        buildTreeItems(self, root[0].children);
-        cr.dispatchSimpleEvent(self, 'load');
-      });
-    },
-
-    /**
-     * Clears the tree.
-     */
-    clear: function() {
-      // Remove all fields without recreating the object since other code
-      // references it.
-      for (var id in treeLookup) {
-        delete treeLookup[id];
-      }
-      this.textContent = '';
-    },
-
-    /** @override */
-    remove: function(child) {
-      Tree.prototype.remove.call(this, child);
-      if (child.bookmarkNode)
-        delete treeLookup[child.bookmarkNode.id];
-    }
-  };
-
-  return {
-    BookmarkTree: BookmarkTree,
-    BookmarkTreeItem: BookmarkTreeItem,
-    treeLookup: treeLookup,
-    tree: tree,
-    ROOT_ID: ROOT_ID
-  };
-});