gecko-dev/extensions/help/resources/content/contextHelp.js

57 строки
2.1 KiB
JavaScript
Executable File

/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* The contents of this file are subject to the Netscape 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/NPL/
*
* 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 Netscape are
* Copyright (C) 1998-1999 Netscape Communications Corporation. All
* Rights Reserved.
*/
const MOZ_HELP_URI = "chrome://help/content/help.xul";
const MOZILLA_HELP = "chrome://help/locale/mozillahelp.rdf";
var helpFileURI = MOZILLA_HELP;
// Call this function to display a help topic.
// uri: [chrome uri of rdf help file][?topic]
function openHelp(topic) {
var topWindow = locateHelpWindow(helpFileURI);
if ( topWindow ) {
topWindow.focus();
topWindow.displayTopic(topic);
} else {
var encodedURI = encodeURIComponent(helpFileURI + "?" + ((topic)?topic:""));
window.open(MOZ_HELP_URI + "?" + encodedURI, "_blank", "chrome,menubar,toolbar,dialog=no,resizable,scrollbars,alwaysRaised");
}
}
function setHelpFileURI(rdfURI) {
helpFileURI = rdfURI;
}
// Locate mozilla:help window (if any) opened for this help file uri.
function locateHelpWindow(helpFileURI) {
var windowManager = Components.classes['@mozilla.org/appshell/window-mediator;1'].getService();
var windowManagerInterface = windowManager.QueryInterface( Components.interfaces.nsIWindowMediator);
var iterator = windowManagerInterface.getEnumerator( "mozilla:help");
var topWindow = null;
while (iterator.hasMoreElements()) {
var aWindow = iterator.getNext();
if (aWindow.getHelpFileURI() == helpFileURI) {
topWindow = aWindow;
break;
}
}
return topWindow;
}