gecko-dev/toolkit/content/globalOverlay.js
Boris Zbarsky 0c4e2cc50c Bug 913855. Fix consumers of window mediator to be more consistent in their checking for closed windows. r=dolske
Note that we can't just stop returning closed windows from the window
mediator, because some consumers (e.g. session restore) rely on seeing
closed windows in the list so they can remove them from their internal
data structures expeditiouly.
2013-09-13 17:29:51 -04:00

192 lines
5.4 KiB
JavaScript

/* 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/. */
function closeWindow(aClose, aPromptFunction)
{
# Closing the last window doesn't quit the application on OS X.
#ifndef XP_MACOSX
var windowCount = 0;
var wm = Components.classes["@mozilla.org/appshell/window-mediator;1"]
.getService(Components.interfaces.nsIWindowMediator);
var e = wm.getEnumerator(null);
while (e.hasMoreElements()) {
var w = e.getNext();
if (w.closed) {
continue;
}
if (++windowCount == 2)
break;
}
// If we're down to the last window and someone tries to shut down, check to make sure we can!
if (windowCount == 1 && !canQuitApplication("lastwindow"))
return false;
else if (windowCount != 1)
#endif
if (typeof(aPromptFunction) == "function" && !aPromptFunction())
return false;
if (aClose)
window.close();
return true;
}
function canQuitApplication(aData)
{
var os = Components.classes["@mozilla.org/observer-service;1"]
.getService(Components.interfaces.nsIObserverService);
if (!os) return true;
try {
var cancelQuit = Components.classes["@mozilla.org/supports-PRBool;1"]
.createInstance(Components.interfaces.nsISupportsPRBool);
os.notifyObservers(cancelQuit, "quit-application-requested", aData || null);
// Something aborted the quit process.
if (cancelQuit.data)
return false;
}
catch (ex) { }
return true;
}
function goQuitApplication()
{
if (!canQuitApplication())
return false;
var appStartup = Components.classes['@mozilla.org/toolkit/app-startup;1'].
getService(Components.interfaces.nsIAppStartup);
appStartup.quit(Components.interfaces.nsIAppStartup.eAttemptQuit);
return true;
}
//
// Command Updater functions
//
function goUpdateCommand(aCommand)
{
try {
var controller = top.document.commandDispatcher
.getControllerForCommand(aCommand);
var enabled = false;
if (controller)
enabled = controller.isCommandEnabled(aCommand);
goSetCommandEnabled(aCommand, enabled);
}
catch (e) {
Components.utils.reportError("An error occurred updating the " +
aCommand + " command: " + e);
}
}
function goDoCommand(aCommand)
{
try {
var controller = top.document.commandDispatcher
.getControllerForCommand(aCommand);
if (controller && controller.isCommandEnabled(aCommand))
controller.doCommand(aCommand);
}
catch (e) {
Components.utils.reportError("An error occurred executing the " +
aCommand + " command: " + e);
}
}
function goSetCommandEnabled(aID, aEnabled)
{
var node = document.getElementById(aID);
if (node) {
if (aEnabled)
node.removeAttribute("disabled");
else
node.setAttribute("disabled", "true");
}
}
function goSetMenuValue(aCommand, aLabelAttribute)
{
var commandNode = top.document.getElementById(aCommand);
if (commandNode) {
var label = commandNode.getAttribute(aLabelAttribute);
if (label)
commandNode.setAttribute("label", label);
}
}
function goSetAccessKey(aCommand, aValueAttribute)
{
var commandNode = top.document.getElementById(aCommand);
if (commandNode) {
var value = commandNode.getAttribute(aValueAttribute);
if (value)
commandNode.setAttribute("accesskey", value);
}
}
// this function is used to inform all the controllers attached to a node that an event has occurred
// (e.g. the tree controllers need to be informed of blur events so that they can change some of the
// menu items back to their default values)
function goOnEvent(aNode, aEvent)
{
var numControllers = aNode.controllers.getControllerCount();
var controller;
for (var controllerIndex = 0; controllerIndex < numControllers; controllerIndex++) {
controller = aNode.controllers.getControllerAt(controllerIndex);
if (controller)
controller.onEvent(aEvent);
}
}
function visitLink(aEvent) {
var node = aEvent.target;
while (node.nodeType != Node.ELEMENT_NODE)
node = node.parentNode;
var url = node.getAttribute("link");
if (!url)
return;
var protocolSvc = Components.classes["@mozilla.org/uriloader/external-protocol-service;1"]
.getService(Components.interfaces.nsIExternalProtocolService);
var ioService = Components.classes["@mozilla.org/network/io-service;1"]
.getService(Components.interfaces.nsIIOService);
var uri = ioService.newURI(url, null, null);
// if the scheme is not an exposed protocol, then opening this link
// should be deferred to the system's external protocol handler
if (protocolSvc.isExposedProtocol(uri.scheme)) {
var win = window.top;
if (win instanceof Components.interfaces.nsIDOMChromeWindow) {
while (win.opener && !win.opener.closed)
win = win.opener;
}
win.open(uri.spec);
}
else
protocolSvc.loadUrl(uri);
}
function setTooltipText(aID, aTooltipText)
{
var element = document.getElementById(aID);
if (element)
element.setAttribute("tooltiptext", aTooltipText);
}
this.__defineGetter__("NS_ASSERT", function() {
delete this.NS_ASSERT;
var tmpScope = {};
Components.utils.import("resource://gre/modules/debug.js", tmpScope);
return this.NS_ASSERT = tmpScope.NS_ASSERT;
});