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Widget demo: Some improvements based on Scott's comments.

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Jörn Zaefferer 2011-06-02 14:25:25 +02:00
parent 8deb745a4a
commit 0e9f87f15b
1 changed files with 40 additions and 28 deletions
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68
demos/widget/default.html
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@ -18,14 +18,17 @@
</style>
<script>
$(function() {
// the widget definition, where 'custom' is the namespace,
// 'colorize' the widget name
$.widget( 'custom.colorize', {
// the widget definition, where "custom" is the namespace,
// "colorize" the widget name
$.widget( "custom.colorize", {
// default options
options: {
red: 255,
green: 0,
blue: 0
blue: 0,
// callbacks
random: null
},
// the constructor
@ -35,9 +38,10 @@
.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
// _bind won"t call random when widget is disabled
click: "random"
});
this._refresh();
@ -45,18 +49,18 @@
// 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 + ')'
this.element.css( "background-color", "rgb(" +
this.options.red +"," +
this.options.green + "," +
this.options.blue + ")"
);
// trigger a callback/event
this._trigger( 'change' );
this._trigger( "change" );
},
// a public method to change the color to a random value
// can be called directly via .colorize( 'random' )
// can be called directly via .colorize( "random" )
random: function( event ) {
var colors = {
red: Math.floor( Math.random() * 256 ),
@ -64,10 +68,9 @@
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();
// trigger an event, check if it"s canceled
if ( this._trigger( "random", event, colors ) !== false ) {
this.option( colors );
}
},
@ -75,31 +78,39 @@
// revert other modifications here
_destroy: function() {
this.element
.removeClass( 'colorize' )
.removeClass( "colorize" )
.enableSelection()
.css( 'background-color', 'transparent' );
.css( "background-color", "transparent" );
},
// always refresh when changing an option
_setOption: function( key, value ) {
// prevent invalid color values
if ( /red|green|blue/.test(key) && value < 0 || value > 255 ) {
return;
}
this._super( "_setOptions", options );
},
// always refresh when changing options
_setOptions: function() {
// _super handles keeping the right this-context
this._super( "_setOption", key, value );
this._superApply( "_setOptions", arguments );
this._refresh();
}
});
// initialize with default options
$( '#my-widget1' ).colorize();
$( "#my-widget1" ).colorize();
// initialize with two customized options
$( '#my-widget2' ).colorize({
$( "#my-widget2" ).colorize({
red: 60,
blue: 60
});
// initialize with custom green value
// and a random callback to allow only colors with enough green
$( '#my-widget3' ).colorize( {
$( "#my-widget3" ).colorize( {
green: 128,
random: function( event, ui ) {
return ui.green > 128;
@ -107,15 +118,16 @@
});
// click to toggle enabled/disabled
$( '#disable' ).toggle(function() {
$( ':custom-colorize' ).colorize( 'disable' );
$( "#disable" ).toggle(function() {
// use the custom selector created for each widget to find all instances
$( ":custom-colorize" ).colorize( "disable" );
}, function() {
$( ':custom-colorize' ).colorize( 'enable' );
$( ":custom-colorize" ).colorize( "enable" );
});
// click to set options after initalization
$( '#black' ).click( function() {
$( ':custom-colorize' ).colorize( 'option', {
$( "#black" ).click( function() {
$( ":custom-colorize" ).colorize( "option", {
red: 0,
green: 0,
blue: 0
@ -142,7 +154,7 @@
<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>The three boxes are initialized in different ways. Clicking them changes their background color. View source to see how it works, its heavily commented</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 -->