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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/. */
var { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");
var { AppConstants } =
ChromeUtils.import("resource://gre/modules/AppConstants.jsm");
// 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 = Cc["@mozilla.org/embedcomp/dialogparam;1"]
.createInstance(Ci.nsIDialogParamBlock);
params.SetNumberStrings(2);
params.SetString(0, helpFileURI);
params.SetString(1, topic);
let openFeatures = "chrome,all,dialog=no";
if (AppConstants.platform == "win") {
openFeatures += ",alwaysRaised";
}
Services.ww.openWindow(null, "chrome://help/content/help.xul", "_blank",
openFeatures, params);
}
}
// 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 iterator = Services.wm.getEnumerator("suite: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.closed && aWindow.getHelpFileURI() == contentPack) {
topWindow = aWindow;
}
}
return topWindow;
}
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