toolkit/content/globalOverlay.js

   1 function closeWindow(aClose, aPromptFunction)
   2 {
   3   var windowCount = 0;
   4   var wm = Components.classes["@mozilla.org/appshell/window-mediator;1"]
   5                      .getService(Components.interfaces.nsIWindowMediator);
   6   var e = wm.getEnumerator(null);
   7
   8   while (e.hasMoreElements()) {
   9     var w = e.getNext();
  10     if (++windowCount == 2)
  11       break;
  12   }
  13
  14 # Closing the last window doesn't quit the application on OS X.
  15 #ifndef XP_MACOSX
  16   // If we're down to the last window and someone tries to shut down, check to make sure we can!
  17   if (windowCount == 1 && !canQuitApplication())
  18     return false;
  19   else if (windowCount != 1)
  20 #endif
  21     if (typeof(aPromptFunction) == "function" && !aPromptFunction())
  22       return false;
  23
  24   if (aClose)
  25     window.close();
  26
  27   return true;
  28 }
  29
  30 function canQuitApplication()
  31 {
  32   var os = Components.classes["@mozilla.org/observer-service;1"]
  33                      .getService(Components.interfaces.nsIObserverService);
  34   if (!os) return true;
  35
  36   try {
  37     var cancelQuit = Components.classes["@mozilla.org/supports-PRBool;1"]
  38                               .createInstance(Components.interfaces.nsISupportsPRBool);
  39     os.notifyObservers(cancelQuit, "quit-application-requested", null);
  40
  41     // Something aborted the quit process.
  42     if (cancelQuit.data)
  43       return false;
  44   }
  45   catch (ex) { }
  46   return true;
  47 }
  48
  49 function goQuitApplication()
  50 {
  51   if (!canQuitApplication())
  52     return false;
  53
  54   var appStartup = Components.classes['@mozilla.org/toolkit/app-startup;1'].
  55                      getService(Components.interfaces.nsIAppStartup);
  56
  57   appStartup.quit(Components.interfaces.nsIAppStartup.eAttemptQuit);
  58   return true;
  59 }
  60
  61 //
  62 // Command Updater functions
  63 //
  64 function goUpdateCommand(aCommand)
  65 {
  66   try {
  67     var controller = top.document.commandDispatcher
  68                         .getControllerForCommand(aCommand);
  69
  70     var enabled = false;
  71     if (controller)
  72       enabled = controller.isCommandEnabled(aCommand);
  73
  74     goSetCommandEnabled(aCommand, enabled);
  75   }
  76   catch (e) {
  77     dump("An error occurred updating the " + aCommand + " command\n");
  78   }
  79 }
  80
  81 function goDoCommand(aCommand)
  82 {
  83   try {
  84     var controller = top.document.commandDispatcher
  85                         .getControllerForCommand(aCommand);
  86     if (controller && controller.isCommandEnabled(aCommand))
  87       controller.doCommand(aCommand);
  88   }
  89   catch (e) {
  90     dump("An error occurred executing the " + aCommand + " command\n" + e + "\n");
  91   }
  92 }
  93
  94
  95 function goSetCommandEnabled(aID, aEnabled)
  96 {
  97   var node = document.getElementById(aID);
  98
  99   if (node) {
 100     if (aEnabled)
 101       node.removeAttribute("disabled");
 102     else
 103       node.setAttribute("disabled", "true");
 104   }
 105 }
 106
 107 function goSetMenuValue(aCommand, aLabelAttribute)
 108 {
 109   var commandNode = top.document.getElementById(aCommand);
 110   if (commandNode) {
 111     var label = commandNode.getAttribute(aLabelAttribute);
 112     if (label)
 113       commandNode.setAttribute("label", label);
 114   }
 115 }
 116
 117 function goSetAccessKey(aCommand, aValueAttribute)
 118 {
 119   var commandNode = top.document.getElementById(aCommand);
 120   if (commandNode) {
 121     var value = commandNode.getAttribute(aValueAttribute);
 122     if (value)
 123       commandNode.setAttribute("accesskey", value);
 124   }
 125 }
 126
 127 // this function is used to inform all the controllers attached to a node that an event has occurred
 128 // (e.g. the tree controllers need to be informed of blur events so that they can change some of the
 129 // menu items back to their default values)
 130 function goOnEvent(aNode, aEvent)
 131 {
 132   var numControllers = aNode.controllers.getControllerCount();
 133   var controller;
 134
 135   for (var controllerIndex = 0; controllerIndex < numControllers; controllerIndex++) {
 136     controller = aNode.controllers.getControllerAt(controllerIndex);
 137     if (controller)
 138       controller.onEvent(aEvent);
 139   }
 140 }
 141
 142 function visitLink(aEvent) {
 143   var node = aEvent.target;
 144   while (node.nodeType != Node.ELEMENT_NODE)
 145     node = node.parentNode;
 146   var url = node.getAttribute("link");
 147   if (!url)
 148     return;
 149
 150   var protocolSvc = Components.classes["@mozilla.org/uriloader/external-protocol-service;1"]
 151                               .getService(Components.interfaces.nsIExternalProtocolService);
 152   var ioService = Components.classes["@mozilla.org/network/io-service;1"]
 153                             .getService(Components.interfaces.nsIIOService);
 154   var uri = ioService.newURI(url, null, null);
 155
 156   // if the scheme is not an exposed protocol, then opening this link
 157   // should be deferred to the system's external protocol handler
 158   if (protocolSvc.isExposedProtocol(uri.scheme)) {
 159     var win = window.top;
 160     if (win instanceof Components.interfaces.nsIDOMChromeWindow) {
 161       while (win.opener && !win.opener.closed)
 162         win = win.opener;
 163     }
 164     win.open(uri.spec);
 165   }
 166   else
 167     protocolSvc.loadUrl(uri);
 168 }
 169
 170 function isValidLeftClick(aEvent, aName)
 171 {
 172   return (aEvent.button == 0 && aEvent.originalTarget.localName == aName);
 173 }
 174
 175 function setTooltipText(aID, aTooltipText)
 176 {
 177   var element = document.getElementById(aID);
 178   if (element)
 179     element.setAttribute("tooltiptext", aTooltipText);
 180 }
 181
 182 function FillInTooltip ( tipElement )
 183 {
 184   var retVal = false;
 185   var textNode = document.getElementById("TOOLTIP-tooltipText");
 186   if (textNode) {
 187     while (textNode.hasChildNodes())
 188       textNode.removeChild(textNode.firstChild);
 189     var tipText = tipElement.getAttribute("tooltiptext");
 190     if (tipText) {
 191       var node = document.createTextNode(tipText);
 192       textNode.appendChild(node);
 193       retVal = true;
 194     }
 195   }
 196   return retVal;
 197 }
 198
 199 __defineGetter__("NS_ASSERT", function() {
 200   delete this.NS_ASSERT;
 201   var tmpScope = {};
 202   Components.utils.import("resource://gre/modules/debug.js", tmpScope);
 203   return this.NS_ASSERT = tmpScope.NS_ASSERT;
 204 });