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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>jQuery UI Widget - Default functionality</title>
<link rel="stylesheet" href="../../themes/base/jquery.ui.all.css">
<script src="../../jquery-1.5.1.js"></script>
<script src="../../ui/jquery.ui.core.js"></script>
<script src="../../ui/jquery.ui.widget.js"></script>
<script src="../../ui/jquery.ui.position.js"></script>
<link rel="stylesheet" href="../demos.css">
<style>
.colorize {
font-size: 25px;
width: 75px;
height: 75px;
}
</style>
<script>
$(function() {
// the widget definition, where 'custom' is the namespace,
// 'colorize' the widget name
$.widget( 'custom.colorize', {
// default options
options: {
red: 255,
green: 0,
blue: 0
},
// the constructor
_create: function() {
this.element
// add a class for themeing
.addClass("colorize")
// prevent double click to select text
.disableSelection();
// bind click events to random method
this._bind({
// _bind won't call random when widget is disabled
click: "random"
});
this._refresh();
},
// called when created, and later when changing options
_refresh: function() {
this.element.css( 'background-color', 'rgb(' +
this.options.red +',' +
this.options.green + ',' +
this.options.blue + ')'
);
// trigger a callback/event
this._trigger( 'change' );
},
// a public method to change the color to a random value
// can be called directly via .colorize( 'random' )
random: function( event ) {
var colors = {
red: Math.floor( Math.random() * 256 ),
green: Math.floor( Math.random() * 256 ),
blue: Math.floor( Math.random() * 256 )
};
// trigger an event, check if it's canceled
if ( this._trigger( 'random', event, colors ) !== false ) {
$.extend( this.options, colors );
this._refresh();
}
},
// events bound via _bind are removed automatically
// revert other modifications here
_destroy: function() {
this.element
.removeClass( 'colorize' )
.enableSelection()
.css( 'background-color', 'transparent' );
},
// always refresh when changing an option
_setOption: function( key, value ) {
// _super handles keeping the right this-context
this._super( "_setOption", key, value );
this._refresh();
}
});
$( '#my-widget1' ).colorize();
$( '#my-widget2' ).colorize({
red: 60,
blue: 60
});
$( '#my-widget3' ).colorize( {
green: 128,
random: function( event, ui ) {
return ui.green > 128;
}
});
$( '#disable' ).toggle(function() {
$( ':custom-colorize' ).colorize( 'disable' );
}, function() {
$( ':custom-colorize' ).colorize( 'enable' );
});
$( '#black' ).click( function() {
$( ':custom-colorize' ).colorize( 'option', {
red: 0,
green: 0,
blue: 0
} );
});
});
</script>
</head>
<body>
<div class="demo">
<div>
<div id="my-widget1">color me</div>
<div id="my-widget2">color me</div>
<div id="my-widget3">color me</div>
<button id="disable">Toglge disabled option</button>
<button id="black">Go black</button>
</div>
</div><!-- End demo -->
<div class="demo-description">
<p>This demo shows a simple custom widget built using the widget factory (jquery.ui.widget.js).</p>
<p>The three boxes are initialized in different ways. Clicking them changes their background color. View source to see how it works.</p>
<p><a href="http://wiki.jqueryui.com/w/page/12138135/Widget-factory">For more details on the widget factory, visit the jQuery UI planning wiki.</a></p>
</div><!-- End demo-description -->
</body>
</html>
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