wp/wp-includes/js/jquery/ui/checkboxradio.js
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/*!
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 * jQuery UI Checkboxradio 1.12.1
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 * http://jqueryui.com
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 *
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 * Copyright jQuery Foundation and other contributors
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 * Released under the MIT license.
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 * http://jquery.org/license
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 */
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//>>label: Checkboxradio
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//>>group: Widgets
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//>>description: Enhances a form with multiple themeable checkboxes or radio buttons.
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//>>docs: http://api.jqueryui.com/checkboxradio/
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//>>demos: http://jqueryui.com/checkboxradio/
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//>>css.structure: ../../themes/base/core.css
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//>>css.structure: ../../themes/base/button.css
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//>>css.structure: ../../themes/base/checkboxradio.css
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//>>css.theme: ../../themes/base/theme.css
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( function( factory ) {
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	if ( typeof define === "function" && define.amd ) {
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		// AMD. Register as an anonymous module.
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		define( [
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			"jquery",
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			"./core"
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		], factory );
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	} else {
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		// Browser globals
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		factory( jQuery );
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	}
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}( function( $ ) {
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$.widget( "ui.checkboxradio", [ $.ui.formResetMixin, {
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	version: "1.12.1",
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	options: {
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		disabled: null,
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		label: null,
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		icon: true,
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		classes: {
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			"ui-checkboxradio-label": "ui-corner-all",
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			"ui-checkboxradio-icon": "ui-corner-all"
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		}
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	},
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	_getCreateOptions: function() {
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		var disabled, labels;
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		var that = this;
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		var options = this._super() || {};
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		// We read the type here, because it makes more sense to throw a element type error first,
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		// rather then the error for lack of a label. Often if its the wrong type, it
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		// won't have a label (e.g. calling on a div, btn, etc)
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		this._readType();
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		labels = this.element.labels();
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		// If there are multiple labels, use the last one
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		this.label = $( labels[ labels.length - 1 ] );
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		if ( !this.label.length ) {
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			$.error( "No label found for checkboxradio widget" );
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		}
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		this.originalLabel = "";
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		// We need to get the label text but this may also need to make sure it does not contain the
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		// input itself.
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		this.label.contents().not( this.element[ 0 ] ).each( function() {
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			// The label contents could be text, html, or a mix. We concat each element to get a
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			// string representation of the label, without the input as part of it.
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			that.originalLabel += this.nodeType === 3 ? $( this ).text() : this.outerHTML;
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		} );
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		// Set the label option if we found label text
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		if ( this.originalLabel ) {
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			options.label = this.originalLabel;
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		}
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		disabled = this.element[ 0 ].disabled;
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		if ( disabled != null ) {
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			options.disabled = disabled;
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		}
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		return options;
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	},
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	_create: function() {
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		var checked = this.element[ 0 ].checked;
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		this._bindFormResetHandler();
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		if ( this.options.disabled == null ) {
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			this.options.disabled = this.element[ 0 ].disabled;
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		}
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		this._setOption( "disabled", this.options.disabled );
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		this._addClass( "ui-checkboxradio", "ui-helper-hidden-accessible" );
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		this._addClass( this.label, "ui-checkboxradio-label", "ui-button ui-widget" );
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		if ( this.type === "radio" ) {
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			this._addClass( this.label, "ui-checkboxradio-radio-label" );
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		}
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		if ( this.options.label && this.options.label !== this.originalLabel ) {
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			this._updateLabel();
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		} else if ( this.originalLabel ) {
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			this.options.label = this.originalLabel;
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		}
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		this._enhance();
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		if ( checked ) {
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			this._addClass( this.label, "ui-checkboxradio-checked", "ui-state-active" );
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			if ( this.icon ) {
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				this._addClass( this.icon, null, "ui-state-hover" );
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			}
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		}
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		this._on( {
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			change: "_toggleClasses",
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			focus: function() {
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				this._addClass( this.label, null, "ui-state-focus ui-visual-focus" );
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			},
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			blur: function() {
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				this._removeClass( this.label, null, "ui-state-focus ui-visual-focus" );
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			}
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		} );
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	},
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	_readType: function() {
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		var nodeName = this.element[ 0 ].nodeName.toLowerCase();
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		this.type = this.element[ 0 ].type;
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		if ( nodeName !== "input" || !/radio|checkbox/.test( this.type ) ) {
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			$.error( "Can't create checkboxradio on element.nodeName=" + nodeName +
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				" and element.type=" + this.type );
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		}
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	},
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	// Support jQuery Mobile enhanced option
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	_enhance: function() {
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		this._updateIcon( this.element[ 0 ].checked );
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	},
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	widget: function() {
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		return this.label;
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	},
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	_getRadioGroup: function() {
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		var group;
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		var name = this.element[ 0 ].name;
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		var nameSelector = "input[name='" + $.ui.escapeSelector( name ) + "']";
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		if ( !name ) {
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			return $( [] );
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		}
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		if ( this.form.length ) {
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			group = $( this.form[ 0 ].elements ).filter( nameSelector );
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		} else {
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			// Not inside a form, check all inputs that also are not inside a form
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			group = $( nameSelector ).filter( function() {
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				return $( this ).form().length === 0;
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			} );
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		}
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		return group.not( this.element );
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	},
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	_toggleClasses: function() {
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		var checked = this.element[ 0 ].checked;
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		this._toggleClass( this.label, "ui-checkboxradio-checked", "ui-state-active", checked );
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		if ( this.options.icon && this.type === "checkbox" ) {
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			this._toggleClass( this.icon, null, "ui-icon-check ui-state-checked", checked )
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				._toggleClass( this.icon, null, "ui-icon-blank", !checked );
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		}
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		if ( this.type === "radio" ) {
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			this._getRadioGroup()
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				.each( function() {
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					var instance = $( this ).checkboxradio( "instance" );
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					if ( instance ) {
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						instance._removeClass( instance.label,
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							"ui-checkboxradio-checked", "ui-state-active" );
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					}
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				} );
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		}
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	},
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	_destroy: function() {
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		this._unbindFormResetHandler();
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		if ( this.icon ) {
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			this.icon.remove();
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			this.iconSpace.remove();
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		}
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	},
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	_setOption: function( key, value ) {
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		// We don't allow the value to be set to nothing
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		if ( key === "label" && !value ) {
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			return;
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		}
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		this._super( key, value );
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		if ( key === "disabled" ) {
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			this._toggleClass( this.label, null, "ui-state-disabled", value );
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			this.element[ 0 ].disabled = value;
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			// Don't refresh when setting disabled
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			return;
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		}
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		this.refresh();
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	},
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	_updateIcon: function( checked ) {
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		var toAdd = "ui-icon ui-icon-background ";
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		if ( this.options.icon ) {
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			if ( !this.icon ) {
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				this.icon = $( "<span>" );
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				this.iconSpace = $( "<span> </span>" );
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				this._addClass( this.iconSpace, "ui-checkboxradio-icon-space" );
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			}
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			if ( this.type === "checkbox" ) {
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				toAdd += checked ? "ui-icon-check ui-state-checked" : "ui-icon-blank";
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				this._removeClass( this.icon, null, checked ? "ui-icon-blank" : "ui-icon-check" );
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			} else {
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				toAdd += "ui-icon-blank";
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			}
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			this._addClass( this.icon, "ui-checkboxradio-icon", toAdd );
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			if ( !checked ) {
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				this._removeClass( this.icon, null, "ui-icon-check ui-state-checked" );
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			}
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			this.icon.prependTo( this.label ).after( this.iconSpace );
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		} else if ( this.icon !== undefined ) {
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			this.icon.remove();
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			this.iconSpace.remove();
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			delete this.icon;
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		}
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	},
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	_updateLabel: function() {
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		// Remove the contents of the label ( minus the icon, icon space, and input )
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		var contents = this.label.contents().not( this.element[ 0 ] );
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		if ( this.icon ) {
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			contents = contents.not( this.icon[ 0 ] );
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		}
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		if ( this.iconSpace ) {
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			contents = contents.not( this.iconSpace[ 0 ] );
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		}
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		contents.remove();
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		this.label.append( this.options.label );
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	},
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	refresh: function() {
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		var checked = this.element[ 0 ].checked,
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			isDisabled = this.element[ 0 ].disabled;
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		this._updateIcon( checked );
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		this._toggleClass( this.label, "ui-checkboxradio-checked", "ui-state-active", checked );
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		if ( this.options.label !== null ) {
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			this._updateLabel();
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		}
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		if ( isDisabled !== this.options.disabled ) {
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			this._setOptions( { "disabled": isDisabled } );
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		}
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	}
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} ] );
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return $.ui.checkboxradio;
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} ) );