https://www.libriincantina.it/wp-includes/js/jquery/ui/spinner.js?ver=1.14.2

1/*!
2 * jQuery UI Spinner 1.14.2
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: Spinner
11//>>group: Widgets
12//>>description: Displays buttons to easily input numbers via the keyboard or mouse.
13//>>docs: https://api.jqueryui.com/spinner/
14//>>demos: https://jqueryui.com/spinner/
15//>>css.structure: ../../themes/base/core.css
16//>>css.structure: ../../themes/base/spinner.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			"./button",
28			"../version",
29			"../keycode",
30			"../widget"
31		], factory );
32	} else {
33
34		// Browser globals
35		factory( jQuery );
36	}
37} )( function( $ ) {
38"use strict";
39
40function spinnerModifier( fn ) {
41	return function() {
42		var previous = this.element.val();
43		fn.apply( this, arguments );
44		this._refresh();
45		if ( previous !== this.element.val() ) {
46			this._trigger( "change" );
47		}
48	};
49}
50
51$.widget( "ui.spinner", {
52	version: "1.14.2",
53	defaultElement: "<input>",
54	widgetEventPrefix: "spin",
55	options: {
56		classes: {
57			"ui-spinner": "ui-corner-all",
58			"ui-spinner-down": "ui-corner-br",
59			"ui-spinner-up": "ui-corner-tr"
60		},
61		culture: null,
62		icons: {
63			down: "ui-icon-triangle-1-s",
64			up: "ui-icon-triangle-1-n"
65		},
66		incremental: true,
67		max: null,
68		min: null,
69		numberFormat: null,
70		page: 10,
71		step: 1,
72
73		change: null,
74		spin: null,
75		start: null,
76		stop: null
77	},
78
79	_create: function() {
80
81		// handle string values that need to be parsed
82		this._setOption( "max", this.options.max );
83		this._setOption( "min", this.options.min );
84		this._setOption( "step", this.options.step );
85
86		// Only format if there is a value, prevents the field from being marked
87		// as invalid in Firefox, see #9573.
88		if ( this.value() !== "" ) {
89
90			// Format the value, but don't constrain.
91			this._value( this.element.val(), true );
92		}
93
94		this._draw();
95		this._on( this._events );
96		this._refresh();
97
98		// Turning off autocomplete prevents the browser from remembering the
99		// value when navigating through history, so we re-enable autocomplete
100		// if the page is unloaded before the widget is destroyed. #7790
101		this._on( this.window, {
102			beforeunload: function() {
103				this.element.removeAttr( "autocomplete" );
104			}
105		} );
106	},
107
108	_getCreateOptions: function() {
109		var options = this._super();
110		var element = this.element;
111
112		$.each( [ "min", "max", "step" ], function( i, option ) {
113			var value = element.attr( option );
114			if ( value != null && value.length ) {
115				options[ option ] = value;
116			}
117		} );
118
119		return options;
120	},
121
122	_events: {
123		keydown: function( event ) {
124			if ( this._start( event ) && this._keydown( event ) ) {
125				event.preventDefault();
126			}
127		},
128		keyup: "_stop",
129		focus: function() {
130			this.previous = this.element.val();
131		},
132		blur: function( event ) {
133			this._stop();
134			this._refresh();
135			if ( this.previous !== this.element.val() ) {
136				this._trigger( "change", event );
137			}
138		},
139		wheel: function( event ) {
140			var activeElement = this.document[ 0 ].activeElement;
141			var isActive = this.element[ 0 ] === activeElement;
142			var delta = event.deltaY || event.originalEvent && event.originalEvent.deltaY;
143
144			if ( !isActive || !delta ) {
145				return;
146			}
147
148			if ( !this.spinning && !this._start( event ) ) {
149				return false;
150			}
151
152			this._spin( ( delta > 0 ? -1 : 1 ) * this.options.step, event );
153			clearTimeout( this.mousewheelTimer );
154			this.mousewheelTimer = this._delay( function() {
155				if ( this.spinning ) {
156					this._stop( event );
157				}
158			}, 100 );
159			event.preventDefault();
160		},
161
162		// DEPRECATED
163		// Kept for backwards compatibility. Please use the modern `wheel`
164		// event. The `delta` parameter is provided by the jQuery Mousewheel
165		// plugin if one is loaded.
166		mousewheel: function( event, delta ) {
167			if ( !event.isTrigger ) {
168
169				// If this is not a trigger call, the `wheel` handler will
170				// fire as well, let's not duplicate it.
171				return;
172			}
173
174			var wheelEvent = $.Event( event );
175			wheelEvent.type = "wheel";
176			if ( delta ) {
177				wheelEvent.deltaY = -delta;
178			}
179			return this._events.wheel.call( this, wheelEvent );
180		},
181
182		"mousedown .ui-spinner-button": function( event ) {
183			var previous;
184
185			// We never want the buttons to have focus; whenever the user is
186			// interacting with the spinner, the focus should be on the input.
187			// If the input is focused then this.previous is properly set from
188			// when the input first received focus. If the input is not focused
189			// then we need to set this.previous based on the value before spinning.
190			previous = this.element[ 0 ] === this.document[ 0 ].activeElement ?
191				this.previous : this.element.val();
192			function checkFocus() {
193				var isActive = this.element[ 0 ] === this.document[ 0 ].activeElement;
194				if ( !isActive ) {
195					this.element.trigger( "focus" );
196					this.previous = previous;
197				}
198			}
199
200			// Ensure focus is on (or stays on) the text field
201			event.preventDefault();
202			checkFocus.call( this );
203
204			if ( this._start( event ) === false ) {
205				return;
206			}
207
208			this._repeat( null, $( event.currentTarget )
209				.hasClass( "ui-spinner-up" ) ? 1 : -1, event );
210		},
211		"mouseup .ui-spinner-button": "_stop",
212		"mouseenter .ui-spinner-button": function( event ) {
213
214			// button will add ui-state-active if mouse was down while mouseleave and kept down
215			if ( !$( event.currentTarget ).hasClass( "ui-state-active" ) ) {
216				return;
217			}
218
219			if ( this._start( event ) === false ) {
220				return false;
221			}
222			this._repeat( null, $( event.currentTarget )
223				.hasClass( "ui-spinner-up" ) ? 1 : -1, event );
224		},
225
226		// TODO: do we really want to consider this a stop?
227		// shouldn't we just stop the repeater and wait until mouseup before
228		// we trigger the stop event?
229		"mouseleave .ui-spinner-button": "_stop"
230	},
231
232	// Support mobile enhanced option and make backcompat more sane
233	_enhance: function() {
234		this.uiSpinner = this.element
235			.attr( "autocomplete", "off" )
236			.wrap( "<span>" )
237			.parent()
238
239				// Add buttons
240				.append(
241					"<a></a><a></a>"
242				);
243	},
244
245	_draw: function() {
246		this._enhance();
247
248		this._addClass( this.uiSpinner, "ui-spinner", "ui-widget ui-widget-content" );
249		this._addClass( "ui-spinner-input" );
250
251		this.element.attr( "role", "spinbutton" );
252
253		// Button bindings
254		this.buttons = this.uiSpinner.children( "a" )
255			.attr( "tabIndex", -1 )
256			.attr( "aria-hidden", true )
257			.button( {
258				classes: {
259					"ui-button": ""
260				}
261			} );
262
263		// TODO: Right now button does not support classes this is already updated in button PR
264		this._removeClass( this.buttons, "ui-corner-all" );
265
266		this._addClass( this.buttons.first(), "ui-spinner-button ui-spinner-up" );
267		this._addClass( this.buttons.last(), "ui-spinner-button ui-spinner-down" );
268		this.buttons.first().button( {
269			"icon": this.options.icons.up,
270			"showLabel": false
271		} );
272		this.buttons.last().button( {
273			"icon": this.options.icons.down,
274			"showLabel": false
275		} );
276
277		// IE 6 doesn't understand height: 50% for the buttons
278		// unless the wrapper has an explicit height
279		if ( this.buttons.height() > Math.ceil( this.uiSpinner.height() * 0.5 ) &&
280				this.uiSpinner.height() > 0 ) {
281			this.uiSpinner.height( this.uiSpinner.height() );
282		}
283	},
284
285	_keydown: function( event ) {
286		var options = this.options,
287			keyCode = $.ui.keyCode;
288
289		switch ( event.keyCode ) {
290		case keyCode.UP:
291			this._repeat( null, 1, event );
292			return true;
293		case keyCode.DOWN:
294			this._repeat( null, -1, event );
295			return true;
296		case keyCode.PAGE_UP:
297			this._repeat( null, options.page, event );
298			return true;
299		case keyCode.PAGE_DOWN:
300			this._repeat( null, -options.page, event );
301			return true;
302		}
303
304		return false;
305	},
306
307	_start: function( event ) {
308		if ( !this.spinning && this._trigger( "start", event ) === false ) {
309			return false;
310		}
311
312		if ( !this.counter ) {
313			this.counter = 1;
314		}
315		this.spinning = true;
316		return true;
317	},
318
319	_repeat: function( i, steps, event ) {
320		i = i || 500;
321
322		clearTimeout( this.timer );
323		this.timer = this._delay( function() {
324			this._repeat( 40, steps, event );
325		}, i );
326
327		this._spin( steps * this.options.step, event );
328	},
329
330	_spin: function( step, event ) {
331		var value = this.value() || 0;
332
333		if ( !this.counter ) {
334			this.counter = 1;
335		}
336
337		value = this._adjustValue( value + step * this._increment( this.counter ) );
338
339		if ( !this.spinning || this._trigger( "spin", event, { value: value } ) !== false ) {
340			this._value( value );
341			this.counter++;
342		}
343	},
344
345	_increment: function( i ) {
346		var incremental = this.options.incremental;
347
348		if ( incremental ) {
349			return typeof incremental === "function" ?
350				incremental( i ) :
351				Math.floor( i * i * i / 50000 - i * i / 500 + 17 * i / 200 + 1 );
352		}
353
354		return 1;
355	},
356
357	_precision: function() {
358		var precision = this._precisionOf( this.options.step );
359		if ( this.options.min !== null ) {
360			precision = Math.max( precision, this._precisionOf( this.options.min ) );
361		}
362		return precision;
363	},
364
365	_precisionOf: function( num ) {
366		var str = num.toString(),
367			decimal = str.indexOf( "." );
368		return decimal === -1 ? 0 : str.length - decimal - 1;
369	},
370
371	_adjustValue: function( value ) {
372		var base, aboveMin,
373			options = this.options;
374
375		// Make sure we're at a valid step
376		// - find out where we are relative to the base (min or 0)
377		base = options.min !== null ? options.min : 0;
378		aboveMin = value - base;
379
380		// - round to the nearest step
381		aboveMin = Math.round( aboveMin / options.step ) * options.step;
382
383		// - rounding is based on 0, so adjust back to our base
384		value = base + aboveMin;
385
386		// Fix precision from bad JS floating point math
387		value = parseFloat( value.toFixed( this._precision() ) );
388
389		// Clamp the value
390		if ( options.max !== null && value > options.max ) {
391			return options.max;
392		}
393		if ( options.min !== null && value < options.min ) {
394			return options.min;
395		}
396
397		return value;
398	},
399
400	_stop: function( event ) {
401		if ( !this.spinning ) {
402			return;
403		}
404
405		clearTimeout( this.timer );
406		clearTimeout( this.mousewheelTimer );
407		this.counter = 0;
408		this.spinning = false;
409		this._trigger( "stop", event );
410	},
411
412	_setOption: function( key, value ) {
413		var prevValue, first, last;
414
415		if ( key === "culture" || key === "numberFormat" ) {
416			prevValue = this._parse( this.element.val() );
417			this.options[ key ] = value;
418			this.element.val( this._format( prevValue ) );
419			return;
420		}
421
422		if ( key === "max" || key === "min" || key === "step" ) {
423			if ( typeof value === "string" ) {
424				value = this._parse( value );
425			}
426		}
427		if ( key === "icons" ) {
428			first = this.buttons.first().find( ".ui-icon" );
429			this._removeClass( first, null, this.options.icons.up );
430			this._addClass( first, null, value.up );
431			last = this.buttons.last().find( ".ui-icon" );
432			this._removeClass( last, null, this.options.icons.down );
433			this._addClass( last, null, value.down );
434		}
435
436		this._super( key, value );
437	},
438
439	_setOptionDisabled: function( value ) {
440		this._super( value );
441
442		this._toggleClass( this.uiSpinner, null, "ui-state-disabled", !!value );
443		this.element.prop( "disabled", !!value );
444		this.buttons.button( value ? "disable" : "enable" );
445	},
446
447	_setOptions: spinnerModifier( function( options ) {
448		this._super( options );
449	} ),
450
451	_parse: function( val ) {
452		if ( typeof val === "string" && val !== "" ) {
453			val = window.Globalize && this.options.numberFormat ?
454				Globalize.parseFloat( val, 10, this.options.culture ) : +val;
455		}
456		return val === "" || isNaN( val ) ? null : val;
457	},
458
459	_format: function( value ) {
460		if ( value === "" ) {
461			return "";
462		}
463		return window.Globalize && this.options.numberFormat ?
464			Globalize.format( value, this.options.numberFormat, this.options.culture ) :
465			value;
466	},
467
468	_refresh: function() {
469		this.element.attr( {
470			"aria-valuemin": this.options.min,
471			"aria-valuemax": this.options.max,
472
473			// TODO: what should we do with values that can't be parsed?
474			"aria-valuenow": this._parse( this.element.val() )
475		} );
476	},
477
478	isValid: function() {
479		var value = this.value();
480
481		// Null is invalid
482		if ( value === null ) {
483			return false;
484		}
485
486		// If value gets adjusted, it's invalid
487		return value === this._adjustValue( value );
488	},
489
490	// Update the value without triggering change
491	_value: function( value, allowAny ) {
492		var parsed;
493		if ( value !== "" ) {
494			parsed = this._parse( value );
495			if ( parsed !== null ) {
496				if ( !allowAny ) {
497					parsed = this._adjustValue( parsed );
498				}
499				value = this._format( parsed );
500			}
501		}
502		this.element.val( value );
503		this._refresh();
504	},
505
506	_destroy: function() {
507		this.element
508			.prop( "disabled", false )
509			.removeAttr( "autocomplete role aria-valuemin aria-valuemax aria-valuenow" );
510
511		this.uiSpinner.replaceWith( this.element );
512	},
513
514	stepUp: spinnerModifier( function( steps ) {
515		this._stepUp( steps );
516	} ),
517	_stepUp: function( steps ) {
518		if ( this._start() ) {
519			this._spin( ( steps || 1 ) * this.options.step );
520			this._stop();
521		}
522	},
523
524	stepDown: spinnerModifier( function( steps ) {
525		this._stepDown( steps );
526	} ),
527	_stepDown: function( steps ) {
528		if ( this._start() ) {
529			this._spin( ( steps || 1 ) * -this.options.step );
530			this._stop();
531		}
532	},
533
534	pageUp: spinnerModifier( function( pages ) {
535		this._stepUp( ( pages || 1 ) * this.options.page );
536	} ),
537
538	pageDown: spinnerModifier( function( pages ) {
539		this._stepDown( ( pages || 1 ) * this.options.page );
540	} ),
541
542	value: function( newVal ) {
543		if ( !arguments.length ) {
544			return this._parse( this.element.val() );
545		}
546		spinnerModifier( this._value ).call( this, newVal );
547	},
548
549	widget: function() {
550		return this.uiSpinner;
551	}
552} );
553
554// DEPRECATED
555// TODO: switch return back to widget declaration at top of file when this is removed
556if ( $.uiBackCompat === true ) {
557
558	// Backcompat for spinner html extension points
559	$.widget( "ui.spinner", $.ui.spinner, {
560		_enhance: function() {
561			this.uiSpinner = this.element
562				.attr( "autocomplete", "off" )
563				.wrap( this._uiSpinnerHtml() )
564				.parent()
565
566					// Add buttons
567					.append( this._buttonHtml() );
568		},
569		_uiSpinnerHtml: function() {
570			return "<span>";
571		},
572
573		_buttonHtml: function() {
574			return "<a></a><a></a>";
575		}
576	} );
577}
578
579return $.ui.spinner;
580
581} );