1/*!
  2 * jQuery UI Slider 1.13.3
  3 * https://jqueryui.com
  4 *
  5 * Copyright OpenJS Foundation and other contributors
  6 * Released under the MIT license.
  7 * https://jquery.org/license
  8 */
  9
 10//>>label: Slider
 11//>>group: Widgets
 12//>>description: Displays a flexible slider with ranges and accessibility via keyboard.
 13//>>docs: https://api.jqueryui.com/slider/
 14//>>demos: https://jqueryui.com/slider/
 15//>>css.structure: ../../themes/base/core.css
 16//>>css.structure: ../../themes/base/slider.css
 17//>>css.theme: ../../themes/base/theme.css
 18
 19( function( factory ) {
 20	"use strict";
 21
 22	if ( typeof define === "function" && define.amd ) {
 23
 24		// AMD. Register as an anonymous module.
 25		define( [
 26			"jquery",
 27			"./mouse",
 28			"../keycode",
 29			"../version",
 30			"../widget"
 31		], factory );
 32	} else {
 33
 34		// Browser globals
 35		factory( jQuery );
 36	}
 37} )( function( $ ) {
 38"use strict";
 39
 40return $.widget( "ui.slider", $.ui.mouse, {
 41	version: "1.13.3",
 42	widgetEventPrefix: "slide",
 43
 44	options: {
 45		animate: false,
 46		classes: {
 47			"ui-slider": "ui-corner-all",
 48			"ui-slider-handle": "ui-corner-all",
 49
 50			// Note: ui-widget-header isn't the most fittingly semantic framework class for this
 51			// element, but worked best visually with a variety of themes
 52			"ui-slider-range": "ui-corner-all ui-widget-header"
 53		},
 54		distance: 0,
 55		max: 100,
 56		min: 0,
 57		orientation: "horizontal",
 58		range: false,
 59		step: 1,
 60		value: 0,
 61		values: null,
 62
 63		// Callbacks
 64		change: null,
 65		slide: null,
 66		start: null,
 67		stop: null
 68	},
 69
 70	// Number of pages in a slider
 71	// (how many times can you page up/down to go through the whole range)
 72	numPages: 5,
 73
 74	_create: function() {
 75		this._keySliding = false;
 76		this._mouseSliding = false;
 77		this._animateOff = true;
 78		this._handleIndex = null;
 79		this._detectOrientation();
 80		this._mouseInit();
 81		this._calculateNewMax();
 82
 83		this._addClass( "ui-slider ui-slider-" + this.orientation,
 84			"ui-widget ui-widget-content" );
 85
 86		this._refresh();
 87
 88		this._animateOff = false;
 89	},
 90
 91	_refresh: function() {
 92		this._createRange();
 93		this._createHandles();
 94		this._setupEvents();
 95		this._refreshValue();
 96	},
 97
 98	_createHandles: function() {
 99		var i, handleCount,
100			options = this.options,
101			existingHandles = this.element.find( ".ui-slider-handle" ),
102			handle = "<span tabindex='0'></span>",
103			handles = [];
104
105		handleCount = ( options.values && options.values.length ) || 1;
106
107		if ( existingHandles.length > handleCount ) {
108			existingHandles.slice( handleCount ).remove();
109			existingHandles = existingHandles.slice( 0, handleCount );
110		}
111
112		for ( i = existingHandles.length; i < handleCount; i++ ) {
113			handles.push( handle );
114		}
115
116		this.handles = existingHandles.add( $( handles.join( "" ) ).appendTo( this.element ) );
117
118		this._addClass( this.handles, "ui-slider-handle", "ui-state-default" );
119
120		this.handle = this.handles.eq( 0 );
121
122		this.handles.each( function( i ) {
123			$( this )
124				.data( "ui-slider-handle-index", i )
125				.attr( "tabIndex", 0 );
126		} );
127	},
128
129	_createRange: function() {
130		var options = this.options;
131
132		if ( options.range ) {
133			if ( options.range === true ) {
134				if ( !options.values ) {
135					options.values = [ this._valueMin(), this._valueMin() ];
136				} else if ( options.values.length && options.values.length !== 2 ) {
137					options.values = [ options.values[ 0 ], options.values[ 0 ] ];
138				} else if ( Array.isArray( options.values ) ) {
139					options.values = options.values.slice( 0 );
140				}
141			}
142
143			if ( !this.range || !this.range.length ) {
144				this.range = $( "<div>" )
145					.appendTo( this.element );
146
147				this._addClass( this.range, "ui-slider-range" );
148			} else {
149				this._removeClass( this.range, "ui-slider-range-min ui-slider-range-max" );
150
151				// Handle range switching from true to min/max
152				this.range.css( {
153					"left": "",
154					"bottom": ""
155				} );
156			}
157			if ( options.range === "min" || options.range === "max" ) {
158				this._addClass( this.range, "ui-slider-range-" + options.range );
159			}
160		} else {
161			if ( this.range ) {
162				this.range.remove();
163			}
164			this.range = null;
165		}
166	},
167
168	_setupEvents: function() {
169		this._off( this.handles );
170		this._on( this.handles, this._handleEvents );
171		this._hoverable( this.handles );
172		this._focusable( this.handles );
173	},
174
175	_destroy: function() {
176		this.handles.remove();
177		if ( this.range ) {
178			this.range.remove();
179		}
180
181		this._mouseDestroy();
182	},
183
184	_mouseCapture: function( event ) {
185		var position, normValue, distance, closestHandle, index, allowed, offset, mouseOverHandle,
186			that = this,
187			o = this.options;
188
189		if ( o.disabled ) {
190			return false;
191		}
192
193		this.elementSize = {
194			width: this.element.outerWidth(),
195			height: this.element.outerHeight()
196		};
197		this.elementOffset = this.element.offset();
198
199		position = { x: event.pageX, y: event.pageY };
200		normValue = this._normValueFromMouse( position );
201		distance = this._valueMax() - this._valueMin() + 1;
202		this.handles.each( function( i ) {
203			var thisDistance = Math.abs( normValue - that.values( i ) );
204			if ( ( distance > thisDistance ) ||
205				( distance === thisDistance &&
206					( i === that._lastChangedValue || that.values( i ) === o.min ) ) ) {
207				distance = thisDistance;
208				closestHandle = $( this );
209				index = i;
210			}
211		} );
212
213		allowed = this._start( event, index );
214		if ( allowed === false ) {
215			return false;
216		}
217		this._mouseSliding = true;
218
219		this._handleIndex = index;
220
221		this._addClass( closestHandle, null, "ui-state-active" );
222		closestHandle.trigger( "focus" );
223
224		offset = closestHandle.offset();
225		mouseOverHandle = !$( event.target ).parents().addBack().is( ".ui-slider-handle" );
226		this._clickOffset = mouseOverHandle ? { left: 0, top: 0 } : {
227			left: event.pageX - offset.left - ( closestHandle.width() / 2 ),
228			top: event.pageY - offset.top -
229				( closestHandle.height() / 2 ) -
230				( parseInt( closestHandle.css( "borderTopWidth" ), 10 ) || 0 ) -
231				( parseInt( closestHandle.css( "borderBottomWidth" ), 10 ) || 0 ) +
232				( parseInt( closestHandle.css( "marginTop" ), 10 ) || 0 )
233		};
234
235		if ( !this.handles.hasClass( "ui-state-hover" ) ) {
236			this._slide( event, index, normValue );
237		}
238		this._animateOff = true;
239		return true;
240	},
241
242	_mouseStart: function() {
243		return true;
244	},
245
246	_mouseDrag: function( event ) {
247		var position = { x: event.pageX, y: event.pageY },
248			normValue = this._normValueFromMouse( position );
249
250		this._slide( event, this._handleIndex, normValue );
251
252		return false;
253	},
254
255	_mouseStop: function( event ) {
256		this._removeClass( this.handles, null, "ui-state-active" );
257		this._mouseSliding = false;
258
259		this._stop( event, this._handleIndex );
260		this._change( event, this._handleIndex );
261
262		this._handleIndex = null;
263		this._clickOffset = null;
264		this._animateOff = false;
265
266		return false;
267	},
268
269	_detectOrientation: function() {
270		this.orientation = ( this.options.orientation === "vertical" ) ? "vertical" : "horizontal";
271	},
272
273	_normValueFromMouse: function( position ) {
274		var pixelTotal,
275			pixelMouse,
276			percentMouse,
277			valueTotal,
278			valueMouse;
279
280		if ( this.orientation === "horizontal" ) {
281			pixelTotal = this.elementSize.width;
282			pixelMouse = position.x - this.elementOffset.left -
283				( this._clickOffset ? this._clickOffset.left : 0 );
284		} else {
285			pixelTotal = this.elementSize.height;
286			pixelMouse = position.y - this.elementOffset.top -
287				( this._clickOffset ? this._clickOffset.top : 0 );
288		}
289
290		percentMouse = ( pixelMouse / pixelTotal );
291		if ( percentMouse > 1 ) {
292			percentMouse = 1;
293		}
294		if ( percentMouse < 0 ) {
295			percentMouse = 0;
296		}
297		if ( this.orientation === "vertical" ) {
298			percentMouse = 1 - percentMouse;
299		}
300
301		valueTotal = this._valueMax() - this._valueMin();
302		valueMouse = this._valueMin() + percentMouse * valueTotal;
303
304		return this._trimAlignValue( valueMouse );
305	},
306
307	_uiHash: function( index, value, values ) {
308		var uiHash = {
309			handle: this.handles[ index ],
310			handleIndex: index,
311			value: value !== undefined ? value : this.value()
312		};
313
314		if ( this._hasMultipleValues() ) {
315			uiHash.value = value !== undefined ? value : this.values( index );
316			uiHash.values = values || this.values();
317		}
318
319		return uiHash;
320	},
321
322	_hasMultipleValues: function() {
323		return this.options.values && this.options.values.length;
324	},
325
326	_start: function( event, index ) {
327		return this._trigger( "start", event, this._uiHash( index ) );
328	},
329
330	_slide: function( event, index, newVal ) {
331		var allowed, otherVal,
332			currentValue = this.value(),
333			newValues = this.values();
334
335		if ( this._hasMultipleValues() ) {
336			otherVal = this.values( index ? 0 : 1 );
337			currentValue = this.values( index );
338
339			if ( this.options.values.length === 2 && this.options.range === true ) {
340				newVal =  index === 0 ? Math.min( otherVal, newVal ) : Math.max( otherVal, newVal );
341			}
342
343			newValues[ index ] = newVal;
344		}
345
346		if ( newVal === currentValue ) {
347			return;
348		}
349
350		allowed = this._trigger( "slide", event, this._uiHash( index, newVal, newValues ) );
351
352		// A slide can be canceled by returning false from the slide callback
353		if ( allowed === false ) {
354			return;
355		}
356
357		if ( this._hasMultipleValues() ) {
358			this.values( index, newVal );
359		} else {
360			this.value( newVal );
361		}
362	},
363
364	_stop: function( event, index ) {
365		this._trigger( "stop", event, this._uiHash( index ) );
366	},
367
368	_change: function( event, index ) {
369		if ( !this._keySliding && !this._mouseSliding ) {
370
371			//store the last changed value index for reference when handles overlap
372			this._lastChangedValue = index;
373			this._trigger( "change", event, this._uiHash( index ) );
374		}
375	},
376
377	value: function( newValue ) {
378		if ( arguments.length ) {
379			this.options.value = this._trimAlignValue( newValue );
380			this._refreshValue();
381			this._change( null, 0 );
382			return;
383		}
384
385		return this._value();
386	},
387
388	values: function( index, newValue ) {
389		var vals,
390			newValues,
391			i;
392
393		if ( arguments.length > 1 ) {
394			this.options.values[ index ] = this._trimAlignValue( newValue );
395			this._refreshValue();
396			this._change( null, index );
397			return;
398		}
399
400		if ( arguments.length ) {
401			if ( Array.isArray( arguments[ 0 ] ) ) {
402				vals = this.options.values;
403				newValues = arguments[ 0 ];
404				for ( i = 0; i < vals.length; i += 1 ) {
405					vals[ i ] = this._trimAlignValue( newValues[ i ] );
406					this._change( null, i );
407				}
408				this._refreshValue();
409			} else {
410				if ( this._hasMultipleValues() ) {
411					return this._values( index );
412				} else {
413					return this.value();
414				}
415			}
416		} else {
417			return this._values();
418		}
419	},
420
421	_setOption: function( key, value ) {
422		var i,
423			valsLength = 0;
424
425		if ( key === "range" && this.options.range === true ) {
426			if ( value === "min" ) {
427				this.options.value = this._values( 0 );
428				this.options.values = null;
429			} else if ( value === "max" ) {
430				this.options.value = this._values( this.options.values.length - 1 );
431				this.options.values = null;
432			}
433		}
434
435		if ( Array.isArray( this.options.values ) ) {
436			valsLength = this.options.values.length;
437		}
438
439		this._super( key, value );
440
441		switch ( key ) {
442			case "orientation":
443				this._detectOrientation();
444				this._removeClass( "ui-slider-horizontal ui-slider-vertical" )
445					._addClass( "ui-slider-" + this.orientation );
446				this._refreshValue();
447				if ( this.options.range ) {
448					this._refreshRange( value );
449				}
450
451				// Reset positioning from previous orientation
452				this.handles.css( value === "horizontal" ? "bottom" : "left", "" );
453				break;
454			case "value":
455				this._animateOff = true;
456				this._refreshValue();
457				this._change( null, 0 );
458				this._animateOff = false;
459				break;
460			case "values":
461				this._animateOff = true;
462				this._refreshValue();
463
464				// Start from the last handle to prevent unreachable handles (#9046)
465				for ( i = valsLength - 1; i >= 0; i-- ) {
466					this._change( null, i );
467				}
468				this._animateOff = false;
469				break;
470			case "step":
471			case "min":
472			case "max":
473				this._animateOff = true;
474				this._calculateNewMax();
475				this._refreshValue();
476				this._animateOff = false;
477				break;
478			case "range":
479				this._animateOff = true;
480				this._refresh();
481				this._animateOff = false;
482				break;
483		}
484	},
485
486	_setOptionDisabled: function( value ) {
487		this._super( value );
488
489		this._toggleClass( null, "ui-state-disabled", !!value );
490	},
491
492	//internal value getter
493	// _value() returns value trimmed by min and max, aligned by step
494	_value: function() {
495		var val = this.options.value;
496		val = this._trimAlignValue( val );
497
498		return val;
499	},
500
501	//internal values getter
502	// _values() returns array of values trimmed by min and max, aligned by step
503	// _values( index ) returns single value trimmed by min and max, aligned by step
504	_values: function( index ) {
505		var val,
506			vals,
507			i;
508
509		if ( arguments.length ) {
510			val = this.options.values[ index ];
511			val = this._trimAlignValue( val );
512
513			return val;
514		} else if ( this._hasMultipleValues() ) {
515
516			// .slice() creates a copy of the array
517			// this copy gets trimmed by min and max and then returned
518			vals = this.options.values.slice();
519			for ( i = 0; i < vals.length; i += 1 ) {
520				vals[ i ] = this._trimAlignValue( vals[ i ] );
521			}
522
523			return vals;
524		} else {
525			return [];
526		}
527	},
528
529	// Returns the step-aligned value that val is closest to, between (inclusive) min and max
530	_trimAlignValue: function( val ) {
531		if ( val <= this._valueMin() ) {
532			return this._valueMin();
533		}
534		if ( val >= this._valueMax() ) {
535			return this._valueMax();
536		}
537		var step = ( this.options.step > 0 ) ? this.options.step : 1,
538			valModStep = ( val - this._valueMin() ) % step,
539			alignValue = val - valModStep;
540
541		if ( Math.abs( valModStep ) * 2 >= step ) {
542			alignValue += ( valModStep > 0 ) ? step : ( -step );
543		}
544
545		// Since JavaScript has problems with large floats, round
546		// the final value to 5 digits after the decimal point (see #4124)
547		return parseFloat( alignValue.toFixed( 5 ) );
548	},
549
550	_calculateNewMax: function() {
551		var max = this.options.max,
552			min = this._valueMin(),
553			step = this.options.step,
554			aboveMin = Math.round( ( max - min ) / step ) * step;
555		max = aboveMin + min;
556		if ( max > this.options.max ) {
557
558			//If max is not divisible by step, rounding off may increase its value
559			max -= step;
560		}
561		this.max = parseFloat( max.toFixed( this._precision() ) );
562	},
563
564	_precision: function() {
565		var precision = this._precisionOf( this.options.step );
566		if ( this.options.min !== null ) {
567			precision = Math.max( precision, this._precisionOf( this.options.min ) );
568		}
569		return precision;
570	},
571
572	_precisionOf: function( num ) {
573		var str = num.toString(),
574			decimal = str.indexOf( "." );
575		return decimal === -1 ? 0 : str.length - decimal - 1;
576	},
577
578	_valueMin: function() {
579		return this.options.min;
580	},
581
582	_valueMax: function() {
583		return this.max;
584	},
585
586	_refreshRange: function( orientation ) {
587		if ( orientation === "vertical" ) {
588			this.range.css( { "width": "", "left": "" } );
589		}
590		if ( orientation === "horizontal" ) {
591			this.range.css( { "height": "", "bottom": "" } );
592		}
593	},
594
595	_refreshValue: function() {
596		var lastValPercent, valPercent, value, valueMin, valueMax,
597			oRange = this.options.range,
598			o = this.options,
599			that = this,
600			animate = ( !this._animateOff ) ? o.animate : false,
601			_set = {};
602
603		if ( this._hasMultipleValues() ) {
604			this.handles.each( function( i ) {
605				valPercent = ( that.values( i ) - that._valueMin() ) / ( that._valueMax() -
606					that._valueMin() ) * 100;
607				_set[ that.orientation === "horizontal" ? "left" : "bottom" ] = valPercent + "%";
608				$( this ).stop( 1, 1 )[ animate ? "animate" : "css" ]( _set, o.animate );
609				if ( that.options.range === true ) {
610					if ( that.orientation === "horizontal" ) {
611						if ( i === 0 ) {
612							that.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( {
613								left: valPercent + "%"
614							}, o.animate );
615						}
616						if ( i === 1 ) {
617							that.range[ animate ? "animate" : "css" ]( {
618								width: ( valPercent - lastValPercent ) + "%"
619							}, {
620								queue: false,
621								duration: o.animate
622							} );
623						}
624					} else {
625						if ( i === 0 ) {
626							that.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( {
627								bottom: ( valPercent ) + "%"
628							}, o.animate );
629						}
630						if ( i === 1 ) {
631							that.range[ animate ? "animate" : "css" ]( {
632								height: ( valPercent - lastValPercent ) + "%"
633							}, {
634								queue: false,
635								duration: o.animate
636							} );
637						}
638					}
639				}
640				lastValPercent = valPercent;
641			} );
642		} else {
643			value = this.value();
644			valueMin = this._valueMin();
645			valueMax = this._valueMax();
646			valPercent = ( valueMax !== valueMin ) ?
647					( value - valueMin ) / ( valueMax - valueMin ) * 100 :
648					0;
649			_set[ this.orientation === "horizontal" ? "left" : "bottom" ] = valPercent + "%";
650			this.handle.stop( 1, 1 )[ animate ? "animate" : "css" ]( _set, o.animate );
651
652			if ( oRange === "min" && this.orientation === "horizontal" ) {
653				this.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( {
654					width: valPercent + "%"
655				}, o.animate );
656			}
657			if ( oRange === "max" && this.orientation === "horizontal" ) {
658				this.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( {
659					width: ( 100 - valPercent ) + "%"
660				}, o.animate );
661			}
662			if ( oRange === "min" && this.orientation === "vertical" ) {
663				this.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( {
664					height: valPercent + "%"
665				}, o.animate );
666			}
667			if ( oRange === "max" && this.orientation === "vertical" ) {
668				this.range.stop( 1, 1 )[ animate ? "animate" : "css" ]( {
669					height: ( 100 - valPercent ) + "%"
670				}, o.animate );
671			}
672		}
673	},
674
675	_handleEvents: {
676		keydown: function( event ) {
677			var allowed, curVal, newVal, step,
678				index = $( event.target ).data( "ui-slider-handle-index" );
679
680			switch ( event.keyCode ) {
681				case $.ui.keyCode.HOME:
682				case $.ui.keyCode.END:
683				case $.ui.keyCode.PAGE_UP:
684				case $.ui.keyCode.PAGE_DOWN:
685				case $.ui.keyCode.UP:
686				case $.ui.keyCode.RIGHT:
687				case $.ui.keyCode.DOWN:
688				case $.ui.keyCode.LEFT:
689					event.preventDefault();
690					if ( !this._keySliding ) {
691						this._keySliding = true;
692						this._addClass( $( event.target ), null, "ui-state-active" );
693						allowed = this._start( event, index );
694						if ( allowed === false ) {
695							return;
696						}
697					}
698					break;
699			}
700
701			step = this.options.step;
702			if ( this._hasMultipleValues() ) {
703				curVal = newVal = this.values( index );
704			} else {
705				curVal = newVal = this.value();
706			}
707
708			switch ( event.keyCode ) {
709				case $.ui.keyCode.HOME:
710					newVal = this._valueMin();
711					break;
712				case $.ui.keyCode.END:
713					newVal = this._valueMax();
714					break;
715				case $.ui.keyCode.PAGE_UP:
716					newVal = this._trimAlignValue(
717						curVal + ( ( this._valueMax() - this._valueMin() ) / this.numPages )
718					);
719					break;
720				case $.ui.keyCode.PAGE_DOWN:
721					newVal = this._trimAlignValue(
722						curVal - ( ( this._valueMax() - this._valueMin() ) / this.numPages ) );
723					break;
724				case $.ui.keyCode.UP:
725				case $.ui.keyCode.RIGHT:
726					if ( curVal === this._valueMax() ) {
727						return;
728					}
729					newVal = this._trimAlignValue( curVal + step );
730					break;
731				case $.ui.keyCode.DOWN:
732				case $.ui.keyCode.LEFT:
733					if ( curVal === this._valueMin() ) {
734						return;
735					}
736					newVal = this._trimAlignValue( curVal - step );
737					break;
738			}
739
740			this._slide( event, index, newVal );
741		},
742		keyup: function( event ) {
743			var index = $( event.target ).data( "ui-slider-handle-index" );
744
745			if ( this._keySliding ) {
746				this._keySliding = false;
747				this._stop( event, index );
748				this._change( event, index );
749				this._removeClass( $( event.target ), null, "ui-state-active" );
750			}
751		}
752	}
753} );
754
755} );
756