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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
# Set the default content pack to the Mozilla content pack. Use the
# setHelpFileURI function to set this value.
var helpFileURI;
# 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)
{
# helpFileURI is the content pack to use in this function. If contentPack is defined,
# use that and set the helpFileURI to that value so that it will be the default.
helpFileURI = contentPack || helpFileURI;
# Try to find previously opened help.
var topWindow = locateHelpWindow(helpFileURI);
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, helpFileURI);
params.SetString(1, topic);
const ww = Components.classes["@mozilla.org/embedcomp/window-watcher;1"]
.getService(Components.interfaces.nsIWindowWatcher);
#ifdef XP_WIN
#define HELP_ALWAYS_RAISED_TOGGLE
#endif
#ifdef HELP_ALWAYS_RAISED_TOGGLE
ww.openWindow(null, "chrome://help/content/help.xul", "_blank", "chrome,all,alwaysRaised,dialog=no", params);
#else
ww.openWindow(null, "chrome://help/content/help.xul", "_blank", "chrome,all,dialog=no", params);
#endif
}
}
# setHelpFileURI - Sets the default content pack to use in the Help Viewer
function setHelpFileURI(rdfURI)
{
helpFileURI = rdfURI;
}
# Locate existing help window for this content pack.
function locateHelpWindow(contentPack) {
const windowManagerInterface = Components
.classes['@mozilla.org/appshell/window-mediator;1'].getService()
.QueryInterface(Components.interfaces.nsIWindowMediator);
const iterator = windowManagerInterface.getEnumerator("mozilla:help");
var topWindow = null;
var aWindow;
# Loop through help windows looking for one with selected content
# pack.
while (iterator.hasMoreElements()) {
aWindow = iterator.getNext();
if (aWindow.getHelpFileURI() == contentPack) {
topWindow = aWindow;
}
}
return topWindow;
}
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