michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: function closeWindow(aClose, aPromptFunction)
michael@0: {
michael@0: # Closing the last window doesn't quit the application on OS X.
michael@0: #ifndef XP_MACOSX
michael@0:   var windowCount = 0;
michael@0:   var wm = Components.classes["@mozilla.org/appshell/window-mediator;1"]
michael@0:                      .getService(Components.interfaces.nsIWindowMediator);
michael@0:   var e = wm.getEnumerator(null);
michael@0:   
michael@0:   while (e.hasMoreElements()) {
michael@0:     var w = e.getNext();
michael@0:     if (w.closed) {
michael@0:       continue;
michael@0:     }
michael@0:     if (++windowCount == 2) 
michael@0:       break;
michael@0:   }
michael@0:   
michael@0:   // If we're down to the last window and someone tries to shut down, check to make sure we can!
michael@0:   if (windowCount == 1 && !canQuitApplication("lastwindow"))
michael@0:     return false;
michael@0:   else if (windowCount != 1)
michael@0: #endif
michael@0:     if (typeof(aPromptFunction) == "function" && !aPromptFunction())
michael@0:       return false;
michael@0: 
michael@0:   if (aClose)    
michael@0:     window.close();
michael@0:   
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: function canQuitApplication(aData)
michael@0: {
michael@0:   var os = Components.classes["@mozilla.org/observer-service;1"]
michael@0:                      .getService(Components.interfaces.nsIObserverService);
michael@0:   if (!os) return true;
michael@0:   
michael@0:   try {
michael@0:     var cancelQuit = Components.classes["@mozilla.org/supports-PRBool;1"]
michael@0:                               .createInstance(Components.interfaces.nsISupportsPRBool);
michael@0:     os.notifyObservers(cancelQuit, "quit-application-requested", aData || null);
michael@0:     
michael@0:     // Something aborted the quit process. 
michael@0:     if (cancelQuit.data)
michael@0:       return false;
michael@0:   }
michael@0:   catch (ex) { }
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: function goQuitApplication()
michael@0: {
michael@0:   if (!canQuitApplication())
michael@0:     return false;
michael@0: 
michael@0:   var appStartup = Components.classes['@mozilla.org/toolkit/app-startup;1'].
michael@0:                      getService(Components.interfaces.nsIAppStartup);
michael@0: 
michael@0:   appStartup.quit(Components.interfaces.nsIAppStartup.eAttemptQuit);
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: //
michael@0: // Command Updater functions
michael@0: //
michael@0: function goUpdateCommand(aCommand)
michael@0: {
michael@0:   try {
michael@0:     var controller = top.document.commandDispatcher
michael@0:                         .getControllerForCommand(aCommand);
michael@0: 
michael@0:     var enabled = false;
michael@0:     if (controller)
michael@0:       enabled = controller.isCommandEnabled(aCommand);
michael@0: 
michael@0:     goSetCommandEnabled(aCommand, enabled);
michael@0:   }
michael@0:   catch (e) {
michael@0:     Components.utils.reportError("An error occurred updating the " +
michael@0:                                  aCommand + " command: " + e);
michael@0:   }
michael@0: }
michael@0: 
michael@0: function goDoCommand(aCommand)
michael@0: {
michael@0:   try {
michael@0:     var controller = top.document.commandDispatcher
michael@0:                         .getControllerForCommand(aCommand);
michael@0:     if (controller && controller.isCommandEnabled(aCommand))
michael@0:       controller.doCommand(aCommand);
michael@0:   }
michael@0:   catch (e) {
michael@0:     Components.utils.reportError("An error occurred executing the " +
michael@0:                                  aCommand + " command: " + e);
michael@0:   }
michael@0: }
michael@0: 
michael@0: 
michael@0: function goSetCommandEnabled(aID, aEnabled)
michael@0: {
michael@0:   var node = document.getElementById(aID);
michael@0: 
michael@0:   if (node) {
michael@0:     if (aEnabled)
michael@0:       node.removeAttribute("disabled");
michael@0:     else
michael@0:       node.setAttribute("disabled", "true");
michael@0:   }
michael@0: }
michael@0: 
michael@0: function goSetMenuValue(aCommand, aLabelAttribute)
michael@0: {
michael@0:   var commandNode = top.document.getElementById(aCommand);
michael@0:   if (commandNode) {
michael@0:     var label = commandNode.getAttribute(aLabelAttribute);
michael@0:     if (label)
michael@0:       commandNode.setAttribute("label", label);
michael@0:   }
michael@0: }
michael@0: 
michael@0: function goSetAccessKey(aCommand, aValueAttribute)
michael@0: {
michael@0:   var commandNode = top.document.getElementById(aCommand);
michael@0:   if (commandNode) {
michael@0:     var value = commandNode.getAttribute(aValueAttribute);
michael@0:     if (value)
michael@0:       commandNode.setAttribute("accesskey", value);
michael@0:   }
michael@0: }
michael@0: 
michael@0: // this function is used to inform all the controllers attached to a node that an event has occurred
michael@0: // (e.g. the tree controllers need to be informed of blur events so that they can change some of the
michael@0: // menu items back to their default values)
michael@0: function goOnEvent(aNode, aEvent)
michael@0: {
michael@0:   var numControllers = aNode.controllers.getControllerCount();
michael@0:   var controller;
michael@0: 
michael@0:   for (var controllerIndex = 0; controllerIndex < numControllers; controllerIndex++) {
michael@0:     controller = aNode.controllers.getControllerAt(controllerIndex);
michael@0:     if (controller)
michael@0:       controller.onEvent(aEvent);
michael@0:   }
michael@0: }
michael@0: 
michael@0: function visitLink(aEvent) {
michael@0:   var node = aEvent.target;
michael@0:   while (node.nodeType != Node.ELEMENT_NODE)
michael@0:     node = node.parentNode;
michael@0:   var url = node.getAttribute("link");
michael@0:   if (!url)
michael@0:     return;
michael@0: 
michael@0:   var protocolSvc = Components.classes["@mozilla.org/uriloader/external-protocol-service;1"]
michael@0:                               .getService(Components.interfaces.nsIExternalProtocolService);
michael@0:   var ioService = Components.classes["@mozilla.org/network/io-service;1"]
michael@0:                             .getService(Components.interfaces.nsIIOService);
michael@0:   var uri = ioService.newURI(url, null, null);
michael@0: 
michael@0:   // if the scheme is not an exposed protocol, then opening this link
michael@0:   // should be deferred to the system's external protocol handler
michael@0:   if (protocolSvc.isExposedProtocol(uri.scheme)) {
michael@0:     var win = window.top;
michael@0:     if (win instanceof Components.interfaces.nsIDOMChromeWindow) {
michael@0:       while (win.opener && !win.opener.closed)
michael@0:         win = win.opener;
michael@0:     }
michael@0:     win.open(uri.spec);
michael@0:   }
michael@0:   else
michael@0:     protocolSvc.loadUrl(uri);
michael@0: }
michael@0: 
michael@0: function setTooltipText(aID, aTooltipText)
michael@0: {
michael@0:   var element = document.getElementById(aID);
michael@0:   if (element)
michael@0:     element.setAttribute("tooltiptext", aTooltipText);
michael@0: }
michael@0: 
michael@0: this.__defineGetter__("NS_ASSERT", function() {
michael@0:   delete this.NS_ASSERT;
michael@0:   var tmpScope = {};
michael@0:   Components.utils.import("resource://gre/modules/debug.js", tmpScope);
michael@0:   return this.NS_ASSERT = tmpScope.NS_ASSERT;
michael@0: });