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- /* -*- Mode: Java; tab-width: 2; 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 Mozilla Communicator client code, released
- * March 31, 1998.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 1998-1999
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- * R.J. Keller <rlk@trfenv.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 ***** */
-
- const MOZILLA_CONTENT_PACK = "chrome://help/locale/mozillahelp.rdf";
- //Set the default content pack to the Mozilla content pack. Use the
- //setHelpFileURI function to set this value.
- var helpFileURI = MOZILLA_CONTENT_PACK;
-
- // openHelp - Opens up the Mozilla Help Viewer with the specified
- // topic and content pack.
- // see http://www.mozilla.org/projects/help-viewer/content_packs.html
- function openHelp(topic, contentPack)
- {
- //cp is the content pack to use in this function. If the contentPack
- //parameter was set, we will use that content pack. If not, we will
- //use the default content pack set by setHelpFileURI().
- var cp = contentPack || helpFileURI;
-
- // Try to find previously opened help.
- var topWindow = locateHelpWindow(cp);
-
- if ( topWindow ) {
- // Open topic in existing window.
- topWindow.focus();
- topWindow.displayTopic(topic);
- } else {
- // Open topic in new window.
- const params = Components.classes["@mozilla.org/embedcomp/dialogparam;1"]
- .createInstance(Components.interfaces.nsIDialogParamBlock);
- params.SetNumberStrings(2);
- params.SetString(0, cp);
- params.SetString(1, topic);
- const ww = Components.classes["@mozilla.org/embedcomp/window-watcher;1"]
- .getService(Components.interfaces.nsIWindowWatcher);
- ww.openWindow(null, "chrome://help/content/help.xul", "_blank", "chrome,all,alwaysRaised,dialog=no", params);
- }
- }
-
- //setHelpFileURI - Sets the default content pack to use in the Help Viewer
- function setHelpFileURI(rdfURI) {
- helpFileURI = rdfURI;
- }
-
- // Locate mozilla:help window (if any) opened for this help file uri.
- function locateHelpWindow(helpFileURI) {
- const windowManager = Components.classes['@mozilla.org/appshell/window-mediator;1']
- .getService(Components.interfaces.nsIWindowMediator);
- var iterator = windowManager.getEnumerator("mozilla:help");
- var topWindow = null;
- var currentWindow;
-
- // Loop through the help windows looking for one with the
- // current Help Content Pack loaded.
- while (iterator.hasMoreElements()) {
- currentWindow = iterator.getNext();
- if (currentWindow.getHelpFileURI() == helpFileURI) {
- topWindow = currentWindow;
- break;
- }
- }
- return topWindow;
- }
-