Allows to create custom events based on other custom events. Requires MooTools Core 1.3.
This Plugin is part of MooTools PowerTools!.
Build via Packager, requires MooTools Core to be registered to Packager already
packager register /path/to/custom-event
packager build Custom-Event/* > custom-event.js
To build this plugin without external dependencies use
packager build Custom-Event/* +use-only Custom-Event > custom-event.js
See Demos/index.html
This plugin provies a method Element.defineCustomEvent
// Fires when the user presses control
Element.defineCustomEvent('control', {
base: 'keydown',
condition: function(event){
return !!event.control;
}
});
Usage
document.addEvent('control', function(event){
// doSomething
});
Subclassing
// Fires when the user presses both control and alt
Element.defineCustomEvent('control+alt', {
base: 'control',
condition: function(event){
return !!event.alt;
}
});
document.addEvent('control+alt', function(event){
// doSomething else
});
In addition there are also new "onSetup" and "onTeardown" events that get fired when the first listener gets added and when the last one got removed
// Example from MooTools Mobile ( http://github.com/cpojer/mootools-mobile )
var preventDefault = function(event){
event.preventDefault();
};
Element.defineCustomEvent('touch', {
base: 'touchend',
condition: function(event){
// code
},
onSetup: function(){
this.addEvent('touchstart', preventDefault);
},
onTeardown: function(){
this.removeEvent('touchstart', preventDefault);
}
});
There is also a new "hasEvent" method on Element to check whether an element has listeners associated to a specified event
if (myElement.hasEvent('click')) // this element has click events associated with it
To disable or enable certain custom events global you can use
Element.disableCustomEvents();
To enable them again you can use
Element.enableCustomEvents();
There are onEnable and onDisable methods on custom events to manually handle a call do disable/enable:
var isEnabled = true;
Element.defineCustomEvent('myCustomEvent', {
base: 'touchstart'
condition: function(){
return isEnabled;
},
onEnable: function(){
isEnabled = true;
}
onDisable: function(){
isEnabled = false;
}
});
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