gecko/browser/components/preferences/selectBookmark.js

//* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Select Bookmark for Home Page Dialog.
 *
 * The Initial Developer of the Original Code is Google Inc.
 * Portions created by the Initial Developer are Copyright (C) 2006
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Ben Goodger <beng@google.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

/**
 * SelectBookmarkDialog controls the user interface for the "Use Bookmark for
 * Home Page" dialog. 
 * 
 * The caller (gMainPane.setHomePageToBookmark in main.js) invokes this dialog
 * with a single argument - a reference to an object with a .urls property and
 * a .names property.  This dialog is responsible for updating the contents of
 * the .urls property with an array of URLs to use as home pages and for
 * updating the .names property with an array of names for those URLs before it
 * closes.
 */ 
var SelectBookmarkDialog = {
  init: function SBD_init() {
    // Initial update of the OK button.
    this.selectionChanged();
  },

  /** 
   * Update the disabled state of the OK button as the user changes the 
   * selection within the view. 
   */
  selectionChanged: function SBD_selectionChanged() {
    var accept = document.documentElement.getButton("accept");
    var bookmarks = document.getElementById("bookmarks");
    var disableAcceptButton = true;
    if (bookmarks.hasSelection) {
      if (!PlacesUtils.nodeIsSeparator(bookmarks.selectedNode))
        disableAcceptButton = false;
    }
    accept.disabled = disableAcceptButton;
  },

  onItemDblClick: function SBD_onItemDblClick() {
    var bookmarks = document.getElementById("bookmarks");
    var selectedNode = bookmarks.selectedNode;
    if (selectedNode && PlacesUtils.nodeIsURI(selectedNode)) {
      /**
       * The user has double clicked on a tree row that is a link. Take this to
       * mean that they want that link to be their homepage, and close the dialog.
       */
      document.documentElement.getButton("accept").click();
    }
  },

  /**
   * User accepts their selection. Set all the selected URLs or the contents
   * of the selected folder as the list of homepages.
   */
  accept: function SBD_accept() {
    var bookmarks = document.getElementById("bookmarks");
    NS_ASSERT(bookmarks.hasSelection,
              "Should not be able to accept dialog if there is no selected URL!");
    var urls = [];
    var names = [];
    var selectedNode = bookmarks.selectedNode;
    if (PlacesUtils.nodeIsFolder(selectedNode)) {
      var contents = PlacesUtils.getFolderContents(selectedNode.itemId).root;
      var cc = contents.childCount;
      for (var i = 0; i < cc; ++i) {
        var node = contents.getChild(i);
        if (PlacesUtils.nodeIsURI(node)) {
          urls.push(node.uri);
          names.push(node.title);
        }
      }
    }
    else {
      urls.push(selectedNode.uri);
      names.push(selectedNode.title);
    }
    window.arguments[0].urls = urls;
    window.arguments[0].names = names;
  }
};