RetroZilla/toolkit/content/globalOverlay.js

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JavaScript
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2015-10-21 05:03:22 +02:00
function closeWindow(aClose)
{
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 (++windowCount == 2)
break;
}
# Closing the last window doesn't quit the application on OS X.
#ifndef XP_MACOSX
// If we're down to the last window and someone tries to shut down, check to make sure we can!
if (windowCount == 1 && !canQuitApplication())
return false;
#endif
if (aClose)
window.close();
return true;
}
function canQuitApplication()
{
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", null);
// Something aborted the quit process.
if (cancelQuit.data)
return false;
}
catch (ex) { }
os.notifyObservers(null, "quit-application-granted", null);
return true;
}
function goQuitApplication()
{
if (!canQuitApplication())
return false;
var windowManager = Components.classes['@mozilla.org/appshell/window-mediator;1'].getService();
var windowManagerInterface = windowManager.QueryInterface( Components.interfaces.nsIWindowMediator);
var enumerator = windowManagerInterface.getEnumerator( null );
var appStartup = Components.classes['@mozilla.org/toolkit/app-startup;1'].
getService(Components.interfaces.nsIAppStartup);
while ( enumerator.hasMoreElements() )
{
var domWindow = enumerator.getNext();
if (("tryToClose" in domWindow) && !domWindow.tryToClose())
return false;
domWindow.close();
};
appStartup.quit(Components.interfaces.nsIAppStartup.eAttemptQuit);
return true;
}
/**
* Command Updater
*/
var CommandUpdater = {
/**
* Gets a controller that can handle a particular command.
* @param command
* A command to locate a controller for, preferring controllers that
* show the command as enabled.
* @returns In this order of precedence:
* - the first controller supporting the specified command
* associated with the focused element that advertises the
* command as ENABLED
* - the first controller supporting the specified command
* associated with the global window that advertises the
* command as ENABLED
* - the first controller supporting the specified command
* associated with the focused element
* - the first controller supporting the specified command
* associated with the global window
*/
_getControllerForCommand: function(command) {
try {
var controller =
top.document.commandDispatcher.getControllerForCommand(command);
if (controller && controller.isCommandEnabled(command))
return controller;
}
catch(e) {
}
var controllerCount = window.controllers.getControllerCount();
for (var i = 0; i < controllerCount; ++i) {
var current = window.controllers.getControllerAt(i);
try {
if (current.supportsCommand(command) && current.isCommandEnabled(command))
return current;
}
catch (e) {
}
}
return controller || window.controllers.getControllerForCommand(command);
},
/**
* Updates the state of a XUL <command> element for the specified command
* depending on its state.
* @param command
* The name of the command to update the XUL <command> element for
*/
updateCommand: function(command) {
var enabled = false;
try {
var controller = this._getControllerForCommand(command);
if (controller)
enabled = controller.isCommandEnabled(command);
}
catch(ex) { }
this.enableCommand(command, enabled);
},
/**
* Enables or disables a XUL <command> element.
* @param command
* The name of the command to enable or disable
* @param enabled
* true if the command should be enabled, false otherwise.
*/
enableCommand: function(command, enabled) {
var element = document.getElementById(command);
if (!element)
return;
if (enabled)
element.removeAttribute("disabled");
else
element.setAttribute("disabled", "true");
},
/**
* Performs the action associated with a specified command using the most
* relevant controller.
* @param command
* The command to perform.
*/
doCommand: function(command) {
var controller = this._getControllerForCommand(command);
if (!controller)
return;
controller.doCommand(command);
},
/**
* Changes the label attribute for the specified command.
* @param command
* The command to update.
* @param labelAttribute
* The label value to use.
*/
setMenuValue: function(command, labelAttribute) {
var commandNode = top.document.getElementById(command);
if (commandNode)
{
var label = commandNode.getAttribute(labelAttribute);
if ( label )
commandNode.setAttribute('label', label);
}
},
/**
* Changes the accesskey attribute for the specified command.
* @param command
* The command to update.
* @param valueAttribute
* The value attribute to use.
*/
setAccessKey: function(command, valueAttribute) {
var commandNode = top.document.getElementById(command);
if (commandNode)
{
var value = commandNode.getAttribute(valueAttribute);
if ( value )
commandNode.setAttribute('accesskey', value);
}
},
/**
* 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)
* @param node
* The node receiving the event
* @param event
* The event.
*/
onEvent: function(node, event) {
var numControllers = node.controllers.getControllerCount();
var controller;
for ( var controllerIndex = 0; controllerIndex < numControllers; controllerIndex++ )
{
controller = node.controllers.getControllerAt(controllerIndex);
if ( controller )
controller.onEvent(event);
}
}
};
// Shim for compatibility with existing code.
function goDoCommand(command) { CommandUpdater.doCommand(command); }
function goUpdateCommand(command) { CommandUpdater.updateCommand(command); }
function goSetCommandEnabled(command, enabled) { CommandUpdater.enableCommand(command, enabled); }
function goSetMenuValue(command, labelAttribute) { CommandUpdater.setMenuValue(command, labelAttribute); }
function goSetAccessKey(command, valueAttribute) { CommandUpdater.setAccessKey(command, valueAttribute); }
function goOnEvent(node, event) { CommandUpdater.onEvent(node, event); }
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 isValidLeftClick(aEvent, aName)
{
return (aEvent.button == 0 && aEvent.originalTarget.localName == aName);
}
function setTooltipText(aID, aTooltipText)
{
var element = document.getElementById(aID);
if (element)
element.setAttribute("tooltiptext", aTooltipText);
}
function FillInTooltip ( tipElement )
{
var retVal = false;
var textNode = document.getElementById("TOOLTIP-tooltipText");
if (textNode) {
while (textNode.hasChildNodes())
textNode.removeChild(textNode.firstChild);
var tipText = tipElement.getAttribute("tooltiptext");
if (tipText) {
var node = document.createTextNode(tipText);
textNode.appendChild(node);
retVal = true;
}
}
return retVal;
}
#include debug.js