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69 lines
2.5 KiB
JavaScript
Executable File
69 lines
2.5 KiB
JavaScript
Executable File
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code, released
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* March 31, 1998.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998-1999 Netscape Communications Corporation. All
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* Rights Reserved.
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*/
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const MOZILLA_HELP = "chrome://help/locale/mozillahelp.rdf";
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var helpFileURI = MOZILLA_HELP;
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// Call this function to display a help topic.
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// uri: [chrome uri of rdf help file][?topic]
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function openHelp(topic) {
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// Try to find previously opened help.
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var topWindow = locateHelpWindow(helpFileURI);
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if ( topWindow ) {
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// Open topic in existing window.
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topWindow.focus();
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topWindow.displayTopic(topic);
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} else {
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// Open topic in new window.
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const params = Components.classes["@mozilla.org/embedcomp/dialogparam;1"]
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.createInstance(Components.interfaces.nsIDialogParamBlock);
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params.SetNumberStrings(2);
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params.SetString(0, helpFileURI);
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params.SetString(1, topic);
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const ww = Components.classes["@mozilla.org/embedcomp/window-watcher;1"]
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.getService(Components.interfaces.nsIWindowWatcher);
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ww.openWindow(null, "chrome://help/content/help.xul", "_blank", "chrome,all,alwaysRaised,dialog=no", params);
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}
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}
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function setHelpFileURI(rdfURI) {
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helpFileURI = rdfURI;
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}
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// Locate mozilla:help window (if any) opened for this help file uri.
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function locateHelpWindow(helpFileURI) {
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const windowManager = Components.classes['@mozilla.org/appshell/window-mediator;1']
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.getService(Components.interfaces.nsIWindowMediator);
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var iterator = windowManager.getEnumerator("mozilla:help");
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var topWindow = null;
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// Loop through the help windows looking for one with the
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// current Help URI loaded.
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while (iterator.hasMoreElements()) {
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var aWindow = iterator.getNext();
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if (aWindow.getHelpFileURI() == helpFileURI) {
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topWindow = aWindow;
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break;
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}
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}
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return topWindow;
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}
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