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Merge commit 'd21ea7816e' as 'jquery-ui'

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Mark Schouten 2016-08-05 13:20:20 +02:00
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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/all.css">
<script src="../../external/jquery/jquery.js"></script>
<script src="../../ui/core.js"></script>
<script src="../../ui/position.js"></script>
<script src="../../ui/widget.js"></script>
<script src="../../ui/button.js"></script>
<link rel="stylesheet" href="../demos.css">
<style>
.custom-colorize {
font-size: 20px;
position: relative;
width: 75px;
height: 75px;
}
.custom-colorize-changer {
font-size: 10px;
position: absolute;
right: 0;
bottom: 0;
}
</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,
// callbacks
change: null,
random: null
},
// the constructor
_create: function() {
this.element
// add a class for theming
.addClass( "custom-colorize" )
// prevent double click to select text
.disableSelection();
this.changer = $( "<button>", {
text: "change",
"class": "custom-colorize-changer"
})
.appendTo( this.element )
.button();
// bind click events on the changer button to the random method
this._on( this.changer, {
// _on 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 ) {
this.option( colors );
}
},
// events bound via _on are removed automatically
// revert other modifications here
_destroy: function() {
// remove generated elements
this.changer.remove();
this.element
.removeClass( "custom-colorize" )
.enableSelection()
.css( "background-color", "transparent" );
},
// _setOptions is called with a hash of all options that are changing
// always refresh when changing options
_setOptions: function() {
// _super and _superApply handle keeping the right this-context
this._superApply( arguments );
this._refresh();
},
// _setOption is called for each individual option that is changing
_setOption: function( key, value ) {
// prevent invalid color values
if ( /red|green|blue/.test(key) && (value < 0 || value > 255) ) {
return;
}
this._super( key, value );
}
});
// initialize with default options
$( "#my-widget1" ).colorize();
// initialize with two customized options
$( "#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( {
green: 128,
random: function( event, ui ) {
return ui.green > 128;
}
});
// click to toggle enabled/disabled
$( "#disable" ).click(function() {
// use the custom selector created for each widget to find all instances
// all instances are toggled together, so we can check the state from the first
if ( $( ":custom-colorize" ).colorize( "option", "disabled" ) ) {
$( ":custom-colorize" ).colorize( "enable" );
} else {
$( ":custom-colorize" ).colorize( "disable" );
}
});
// click to set options after initialization
$( "#green" ).click( function() {
$( ":custom-colorize" ).colorize( "option", {
red: 64,
green: 250,
blue: 8
});
});
});
</script>
</head>
<body>
<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">Toggle disabled option</button>
<button id="green">Go green</button>
</div>
<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, its heavily commented</p>
</div>
</body>
</html>