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bower_components/jquery/src/attributes/val.js 3.75 KB
74249687   Luigi Serra   Cross browser con...
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  define([
  	"../core",
  	"./support",
  	"../core/init"
  ], function( jQuery, support ) {
  
  var rreturn = /\r/g;
  
  jQuery.fn.extend({
  	val: function( value ) {
  		var hooks, ret, isFunction,
  			elem = this[0];
  
  		if ( !arguments.length ) {
  			if ( elem ) {
  				hooks = jQuery.valHooks[ elem.type ] || jQuery.valHooks[ elem.nodeName.toLowerCase() ];
  
  				if ( hooks && "get" in hooks && (ret = hooks.get( elem, "value" )) !== undefined ) {
  					return ret;
  				}
  
  				ret = elem.value;
  
  				return typeof ret === "string" ?
  					// Handle most common string cases
  					ret.replace(rreturn, "") :
  					// Handle cases where value is null/undef or number
  					ret == null ? "" : ret;
  			}
  
  			return;
  		}
  
  		isFunction = jQuery.isFunction( value );
  
  		return this.each(function( i ) {
  			var val;
  
  			if ( this.nodeType !== 1 ) {
  				return;
  			}
  
  			if ( isFunction ) {
  				val = value.call( this, i, jQuery( this ).val() );
  			} else {
  				val = value;
  			}
  
  			// Treat null/undefined as ""; convert numbers to string
  			if ( val == null ) {
  				val = "";
  
  			} else if ( typeof val === "number" ) {
  				val += "";
  
  			} else if ( jQuery.isArray( val ) ) {
  				val = jQuery.map( val, function( value ) {
  					return value == null ? "" : value + "";
  				});
  			}
  
  			hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ];
  
  			// If set returns undefined, fall back to normal setting
  			if ( !hooks || !("set" in hooks) || hooks.set( this, val, "value" ) === undefined ) {
  				this.value = val;
  			}
  		});
  	}
  });
  
  jQuery.extend({
  	valHooks: {
  		option: {
  			get: function( elem ) {
  				var val = jQuery.find.attr( elem, "value" );
  				return val != null ?
  					val :
  					// Support: IE10-11+
  					// option.text throws exceptions (#14686, #14858)
  					jQuery.trim( jQuery.text( elem ) );
  			}
  		},
  		select: {
  			get: function( elem ) {
  				var value, option,
  					options = elem.options,
  					index = elem.selectedIndex,
  					one = elem.type === "select-one" || index < 0,
  					values = one ? null : [],
  					max = one ? index + 1 : options.length,
  					i = index < 0 ?
  						max :
  						one ? index : 0;
  
  				// Loop through all the selected options
  				for ( ; i < max; i++ ) {
  					option = options[ i ];
  
  					// IE6-9 doesn't update selected after form reset (#2551)
  					if ( ( option.selected || i === index ) &&
  							// Don't return options that are disabled or in a disabled optgroup
  							( support.optDisabled ? !option.disabled : option.getAttribute( "disabled" ) === null ) &&
  							( !option.parentNode.disabled || !jQuery.nodeName( option.parentNode, "optgroup" ) ) ) {
  
  						// Get the specific value for the option
  						value = jQuery( option ).val();
  
  						// We don't need an array for one selects
  						if ( one ) {
  							return value;
  						}
  
  						// Multi-Selects return an array
  						values.push( value );
  					}
  				}
  
  				return values;
  			},
  
  			set: function( elem, value ) {
  				var optionSet, option,
  					options = elem.options,
  					values = jQuery.makeArray( value ),
  					i = options.length;
  
  				while ( i-- ) {
  					option = options[ i ];
  					if ( (option.selected = jQuery.inArray( option.value, values ) >= 0) ) {
  						optionSet = true;
  					}
  				}
  
  				// Force browsers to behave consistently when non-matching value is set
  				if ( !optionSet ) {
  					elem.selectedIndex = -1;
  				}
  				return values;
  			}
  		}
  	}
  });
  
  // Radios and checkboxes getter/setter
  jQuery.each([ "radio", "checkbox" ], function() {
  	jQuery.valHooks[ this ] = {
  		set: function( elem, value ) {
  			if ( jQuery.isArray( value ) ) {
  				return ( elem.checked = jQuery.inArray( jQuery(elem).val(), value ) >= 0 );
  			}
  		}
  	};
  	if ( !support.checkOn ) {
  		jQuery.valHooks[ this ].get = function( elem ) {
  			return elem.getAttribute("value") === null ? "on" : elem.value;
  		};
  	}
  });
  
  });