1/*!
2 * jQuery UI Menu 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: Menu
11//>>group: Widgets
12//>>description: Creates nestable menus.
13//>>docs: https://api.jqueryui.com/menu/
14//>>demos: https://jqueryui.com/menu/
15//>>css.structure: ../../themes/base/core.css
16//>>css.structure: ../../themes/base/menu.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 "../keycode",
28 "../position",
29 "../safe-active-element",
30 "../unique-id",
31 "../version",
32 "../widget"
33 ], factory );
34 } else {
35
36 // Browser globals
37 factory( jQuery );
38 }
39} )( function( $ ) {
40"use strict";
41
42return $.widget( "ui.menu", {
43 version: "1.13.3",
44 defaultElement: "<ul>",
45 delay: 300,
46 options: {
47 icons: {
48 submenu: "ui-icon-caret-1-e"
49 },
50 items: "> *",
51 menus: "ul",
52 position: {
53 my: "left top",
54 at: "right top"
55 },
56 role: "menu",
57
58 // Callbacks
59 blur: null,
60 focus: null,
61 select: null
62 },
63
64 _create: function() {
65 this.activeMenu = this.element;
66
67 // Flag used to prevent firing of the click handler
68 // as the event bubbles up through nested menus
69 this.mouseHandled = false;
70 this.lastMousePosition = { x: null, y: null };
71 this.element
72 .uniqueId()
73 .attr( {
74 role: this.options.role,
75 tabIndex: 0
76 } );
77
78 this._addClass( "ui-menu", "ui-widget ui-widget-content" );
79 this._on( {
80
81 // Prevent focus from sticking to links inside menu after clicking
82 // them (focus should always stay on UL during navigation).
83 "mousedown .ui-menu-item": function( event ) {
84 event.preventDefault();
85
86 this._activateItem( event );
87 },
88 "click .ui-menu-item": function( event ) {
89 var target = $( event.target );
90 var active = $( $.ui.safeActiveElement( this.document[ 0 ] ) );
91 if ( !this.mouseHandled && target.not( ".ui-state-disabled" ).length ) {
92 this.select( event );
93
94 // Only set the mouseHandled flag if the event will bubble, see #9469.
95 if ( !event.isPropagationStopped() ) {
96 this.mouseHandled = true;
97 }
98
99 // Open submenu on click
100 if ( target.has( ".ui-menu" ).length ) {
101 this.expand( event );
102 } else if ( !this.element.is( ":focus" ) &&
103 active.closest( ".ui-menu" ).length ) {
104
105 // Redirect focus to the menu
106 this.element.trigger( "focus", [ true ] );
107
108 // If the active item is on the top level, let it stay active.
109 // Otherwise, blur the active item since it is no longer visible.
110 if ( this.active && this.active.parents( ".ui-menu" ).length === 1 ) {
111 clearTimeout( this.timer );
112 }
113 }
114 }
115 },
116 "mouseenter .ui-menu-item": "_activateItem",
117 "mousemove .ui-menu-item": "_activateItem",
118 mouseleave: "collapseAll",
119 "mouseleave .ui-menu": "collapseAll",
120 focus: function( event, keepActiveItem ) {
121
122 // If there's already an active item, keep it active
123 // If not, activate the first item
124 var item = this.active || this._menuItems().first();
125
126 if ( !keepActiveItem ) {
127 this.focus( event, item );
128 }
129 },
130 blur: function( event ) {
131 this._delay( function() {
132 var notContained = !$.contains(
133 this.element[ 0 ],
134 $.ui.safeActiveElement( this.document[ 0 ] )
135 );
136 if ( notContained ) {
137 this.collapseAll( event );
138 }
139 } );
140 },
141 keydown: "_keydown"
142 } );
143
144 this.refresh();
145
146 // Clicks outside of a menu collapse any open menus
147 this._on( this.document, {
148 click: function( event ) {
149 if ( this._closeOnDocumentClick( event ) ) {
150 this.collapseAll( event, true );
151 }
152
153 // Reset the mouseHandled flag
154 this.mouseHandled = false;
155 }
156 } );
157 },
158
159 _activateItem: function( event ) {
160
161 // Ignore mouse events while typeahead is active, see #10458.
162 // Prevents focusing the wrong item when typeahead causes a scroll while the mouse
163 // is over an item in the menu
164 if ( this.previousFilter ) {
165 return;
166 }
167
168 // If the mouse didn't actually move, but the page was scrolled, ignore the event (#9356)
169 if ( event.clientX === this.lastMousePosition.x &&
170 event.clientY === this.lastMousePosition.y ) {
171 return;
172 }
173
174 this.lastMousePosition = {
175 x: event.clientX,
176 y: event.clientY
177 };
178
179 var actualTarget = $( event.target ).closest( ".ui-menu-item" ),
180 target = $( event.currentTarget );
181
182 // Ignore bubbled events on parent items, see #11641
183 if ( actualTarget[ 0 ] !== target[ 0 ] ) {
184 return;
185 }
186
187 // If the item is already active, there's nothing to do
188 if ( target.is( ".ui-state-active" ) ) {
189 return;
190 }
191
192 // Remove ui-state-active class from siblings of the newly focused menu item
193 // to avoid a jump caused by adjacent elements both having a class with a border
194 this._removeClass( target.siblings().children( ".ui-state-active" ),
195 null, "ui-state-active" );
196 this.focus( event, target );
197 },
198
199 _destroy: function() {
200 var items = this.element.find( ".ui-menu-item" )
201 .removeAttr( "role aria-disabled" ),
202 submenus = items.children( ".ui-menu-item-wrapper" )
203 .removeUniqueId()
204 .removeAttr( "tabIndex role aria-haspopup" );
205
206 // Destroy (sub)menus
207 this.element
208 .removeAttr( "aria-activedescendant" )
209 .find( ".ui-menu" ).addBack()
210 .removeAttr( "role aria-labelledby aria-expanded aria-hidden aria-disabled " +
211 "tabIndex" )
212 .removeUniqueId()
213 .show();
214
215 submenus.children().each( function() {
216 var elem = $( this );
217 if ( elem.data( "ui-menu-submenu-caret" ) ) {
218 elem.remove();
219 }
220 } );
221 },
222
223 _keydown: function( event ) {
224 var match, prev, character, skip,
225 preventDefault = true;
226
227 switch ( event.keyCode ) {
228 case $.ui.keyCode.PAGE_UP:
229 this.previousPage( event );
230 break;
231 case $.ui.keyCode.PAGE_DOWN:
232 this.nextPage( event );
233 break;
234 case $.ui.keyCode.HOME:
235 this._move( "first", "first", event );
236 break;
237 case $.ui.keyCode.END:
238 this._move( "last", "last", event );
239 break;
240 case $.ui.keyCode.UP:
241 this.previous( event );
242 break;
243 case $.ui.keyCode.DOWN:
244 this.next( event );
245 break;
246 case $.ui.keyCode.LEFT:
247 this.collapse( event );
248 break;
249 case $.ui.keyCode.RIGHT:
250 if ( this.active && !this.active.is( ".ui-state-disabled" ) ) {
251 this.expand( event );
252 }
253 break;
254 case $.ui.keyCode.ENTER:
255 case $.ui.keyCode.SPACE:
256 this._activate( event );
257 break;
258 case $.ui.keyCode.ESCAPE:
259 this.collapse( event );
260 break;
261 default:
262 preventDefault = false;
263 prev = this.previousFilter || "";
264 skip = false;
265
266 // Support number pad values
267 character = event.keyCode >= 96 && event.keyCode <= 105 ?
268 ( event.keyCode - 96 ).toString() : String.fromCharCode( event.keyCode );
269
270 clearTimeout( this.filterTimer );
271
272 if ( character === prev ) {
273 skip = true;
274 } else {
275 character = prev + character;
276 }
277
278 match = this._filterMenuItems( character );
279 match = skip && match.index( this.active.next() ) !== -1 ?
280 this.active.nextAll( ".ui-menu-item" ) :
281 match;
282
283 // If no matches on the current filter, reset to the last character pressed
284 // to move down the menu to the first item that starts with that character
285 if ( !match.length ) {
286 character = String.fromCharCode( event.keyCode );
287 match = this._filterMenuItems( character );
288 }
289
290 if ( match.length ) {
291 this.focus( event, match );
292 this.previousFilter = character;
293 this.filterTimer = this._delay( function() {
294 delete this.previousFilter;
295 }, 1000 );
296 } else {
297 delete this.previousFilter;
298 }
299 }
300
301 if ( preventDefault ) {
302 event.preventDefault();
303 }
304 },
305
306 _activate: function( event ) {
307 if ( this.active && !this.active.is( ".ui-state-disabled" ) ) {
308 if ( this.active.children( "[aria-haspopup='true']" ).length ) {
309 this.expand( event );
310 } else {
311 this.select( event );
312 }
313 }
314 },
315
316 refresh: function() {
317 var menus, items, newSubmenus, newItems, newWrappers,
318 that = this,
319 icon = this.options.icons.submenu,
320 submenus = this.element.find( this.options.menus );
321
322 this._toggleClass( "ui-menu-icons", null, !!this.element.find( ".ui-icon" ).length );
323
324 // Initialize nested menus
325 newSubmenus = submenus.filter( ":not(.ui-menu)" )
326 .hide()
327 .attr( {
328 role: this.options.role,
329 "aria-hidden": "true",
330 "aria-expanded": "false"
331 } )
332 .each( function() {
333 var menu = $( this ),
334 item = menu.prev(),
335 submenuCaret = $( "<span>" ).data( "ui-menu-submenu-caret", true );
336
337 that._addClass( submenuCaret, "ui-menu-icon", "ui-icon " + icon );
338 item
339 .attr( "aria-haspopup", "true" )
340 .prepend( submenuCaret );
341 menu.attr( "aria-labelledby", item.attr( "id" ) );
342 } );
343
344 this._addClass( newSubmenus, "ui-menu", "ui-widget ui-widget-content ui-front" );
345
346 menus = submenus.add( this.element );
347 items = menus.find( this.options.items );
348
349 // Initialize menu-items containing spaces and/or dashes only as dividers
350 items.not( ".ui-menu-item" ).each( function() {
351 var item = $( this );
352 if ( that._isDivider( item ) ) {
353 that._addClass( item, "ui-menu-divider", "ui-widget-content" );
354 }
355 } );
356
357 // Don't refresh list items that are already adapted
358 newItems = items.not( ".ui-menu-item, .ui-menu-divider" );
359 newWrappers = newItems.children()
360 .not( ".ui-menu" )
361 .uniqueId()
362 .attr( {
363 tabIndex: -1,
364 role: this._itemRole()
365 } );
366 this._addClass( newItems, "ui-menu-item" )
367 ._addClass( newWrappers, "ui-menu-item-wrapper" );
368
369 // Add aria-disabled attribute to any disabled menu item
370 items.filter( ".ui-state-disabled" ).attr( "aria-disabled", "true" );
371
372 // If the active item has been removed, blur the menu
373 if ( this.active && !$.contains( this.element[ 0 ], this.active[ 0 ] ) ) {
374 this.blur();
375 }
376 },
377
378 _itemRole: function() {
379 return {
380 menu: "menuitem",
381 listbox: "option"
382 }[ this.options.role ];
383 },
384
385 _setOption: function( key, value ) {
386 if ( key === "icons" ) {
387 var icons = this.element.find( ".ui-menu-icon" );
388 this._removeClass( icons, null, this.options.icons.submenu )
389 ._addClass( icons, null, value.submenu );
390 }
391 this._super( key, value );
392 },
393
394 _setOptionDisabled: function( value ) {
395 this._super( value );
396
397 this.element.attr( "aria-disabled", String( value ) );
398 this._toggleClass( null, "ui-state-disabled", !!value );
399 },
400
401 focus: function( event, item ) {
402 var nested, focused, activeParent;
403 this.blur( event, event && event.type === "focus" );
404
405 this._scrollIntoView( item );
406
407 this.active = item.first();
408
409 focused = this.active.children( ".ui-menu-item-wrapper" );
410 this._addClass( focused, null, "ui-state-active" );
411
412 // Only update aria-activedescendant if there's a role
413 // otherwise we assume focus is managed elsewhere
414 if ( this.options.role ) {
415 this.element.attr( "aria-activedescendant", focused.attr( "id" ) );
416 }
417
418 // Highlight active parent menu item, if any
419 activeParent = this.active
420 .parent()
421 .closest( ".ui-menu-item" )
422 .children( ".ui-menu-item-wrapper" );
423 this._addClass( activeParent, null, "ui-state-active" );
424
425 if ( event && event.type === "keydown" ) {
426 this._close();
427 } else {
428 this.timer = this._delay( function() {
429 this._close();
430 }, this.delay );
431 }
432
433 nested = item.children( ".ui-menu" );
434 if ( nested.length && event && ( /^mouse/.test( event.type ) ) ) {
435 this._startOpening( nested );
436 }
437 this.activeMenu = item.parent();
438
439 this._trigger( "focus", event, { item: item } );
440 },
441
442 _scrollIntoView: function( item ) {
443 var borderTop, paddingTop, offset, scroll, elementHeight, itemHeight;
444 if ( this._hasScroll() ) {
445 borderTop = parseFloat( $.css( this.activeMenu[ 0 ], "borderTopWidth" ) ) || 0;
446 paddingTop = parseFloat( $.css( this.activeMenu[ 0 ], "paddingTop" ) ) || 0;
447 offset = item.offset().top - this.activeMenu.offset().top - borderTop - paddingTop;
448 scroll = this.activeMenu.scrollTop();
449 elementHeight = this.activeMenu.height();
450 itemHeight = item.outerHeight();
451
452 if ( offset < 0 ) {
453 this.activeMenu.scrollTop( scroll + offset );
454 } else if ( offset + itemHeight > elementHeight ) {
455 this.activeMenu.scrollTop( scroll + offset - elementHeight + itemHeight );
456 }
457 }
458 },
459
460 blur: function( event, fromFocus ) {
461 if ( !fromFocus ) {
462 clearTimeout( this.timer );
463 }
464
465 if ( !this.active ) {
466 return;
467 }
468
469 this._removeClass( this.active.children( ".ui-menu-item-wrapper" ),
470 null, "ui-state-active" );
471
472 this._trigger( "blur", event, { item: this.active } );
473 this.active = null;
474 },
475
476 _startOpening: function( submenu ) {
477 clearTimeout( this.timer );
478
479 // Don't open if already open fixes a Firefox bug that caused a .5 pixel
480 // shift in the submenu position when mousing over the caret icon
481 if ( submenu.attr( "aria-hidden" ) !== "true" ) {
482 return;
483 }
484
485 this.timer = this._delay( function() {
486 this._close();
487 this._open( submenu );
488 }, this.delay );
489 },
490
491 _open: function( submenu ) {
492 var position = $.extend( {
493 of: this.active
494 }, this.options.position );
495
496 clearTimeout( this.timer );
497 this.element.find( ".ui-menu" ).not( submenu.parents( ".ui-menu" ) )
498 .hide()
499 .attr( "aria-hidden", "true" );
500
501 submenu
502 .show()
503 .removeAttr( "aria-hidden" )
504 .attr( "aria-expanded", "true" )
505 .position( position );
506 },
507
508 collapseAll: function( event, all ) {
509 clearTimeout( this.timer );
510 this.timer = this._delay( function() {
511
512 // If we were passed an event, look for the submenu that contains the event
513 var currentMenu = all ? this.element :
514 $( event && event.target ).closest( this.element.find( ".ui-menu" ) );
515
516 // If we found no valid submenu ancestor, use the main menu to close all
517 // sub menus anyway
518 if ( !currentMenu.length ) {
519 currentMenu = this.element;
520 }
521
522 this._close( currentMenu );
523
524 this.blur( event );
525
526 // Work around active item staying active after menu is blurred
527 this._removeClass( currentMenu.find( ".ui-state-active" ), null, "ui-state-active" );
528
529 this.activeMenu = currentMenu;
530 }, all ? 0 : this.delay );
531 },
532
533 // With no arguments, closes the currently active menu - if nothing is active
534 // it closes all menus. If passed an argument, it will search for menus BELOW
535 _close: function( startMenu ) {
536 if ( !startMenu ) {
537 startMenu = this.active ? this.active.parent() : this.element;
538 }
539
540 startMenu.find( ".ui-menu" )
541 .hide()
542 .attr( "aria-hidden", "true" )
543 .attr( "aria-expanded", "false" );
544 },
545
546 _closeOnDocumentClick: function( event ) {
547 return !$( event.target ).closest( ".ui-menu" ).length;
548 },
549
550 _isDivider: function( item ) {
551
552 // Match hyphen, em dash, en dash
553 return !/[^\-\u2014\u2013\s]/.test( item.text() );
554 },
555
556 collapse: function( event ) {
557 var newItem = this.active &&
558 this.active.parent().closest( ".ui-menu-item", this.element );
559 if ( newItem && newItem.length ) {
560 this._close();
561 this.focus( event, newItem );
562 }
563 },
564
565 expand: function( event ) {
566 var newItem = this.active && this._menuItems( this.active.children( ".ui-menu" ) ).first();
567
568 if ( newItem && newItem.length ) {
569 this._open( newItem.parent() );
570
571 // Delay so Firefox will not hide activedescendant change in expanding submenu from AT
572 this._delay( function() {
573 this.focus( event, newItem );
574 } );
575 }
576 },
577
578 next: function( event ) {
579 this._move( "next", "first", event );
580 },
581
582 previous: function( event ) {
583 this._move( "prev", "last", event );
584 },
585
586 isFirstItem: function() {
587 return this.active && !this.active.prevAll( ".ui-menu-item" ).length;
588 },
589
590 isLastItem: function() {
591 return this.active && !this.active.nextAll( ".ui-menu-item" ).length;
592 },
593
594 _menuItems: function( menu ) {
595 return ( menu || this.element )
596 .find( this.options.items )
597 .filter( ".ui-menu-item" );
598 },
599
600 _move: function( direction, filter, event ) {
601 var next;
602 if ( this.active ) {
603 if ( direction === "first" || direction === "last" ) {
604 next = this.active
605 [ direction === "first" ? "prevAll" : "nextAll" ]( ".ui-menu-item" )
606 .last();
607 } else {
608 next = this.active
609 [ direction + "All" ]( ".ui-menu-item" )
610 .first();
611 }
612 }
613 if ( !next || !next.length || !this.active ) {
614 next = this._menuItems( this.activeMenu )[ filter ]();
615 }
616
617 this.focus( event, next );
618 },
619
620 nextPage: function( event ) {
621 var item, base, height;
622
623 if ( !this.active ) {
624 this.next( event );
625 return;
626 }
627 if ( this.isLastItem() ) {
628 return;
629 }
630 if ( this._hasScroll() ) {
631 base = this.active.offset().top;
632 height = this.element.innerHeight();
633
634 // jQuery 3.2 doesn't include scrollbars in innerHeight, add it back.
635 if ( $.fn.jquery.indexOf( "3.2." ) === 0 ) {
636 height += this.element[ 0 ].offsetHeight - this.element.outerHeight();
637 }
638
639 this.active.nextAll( ".ui-menu-item" ).each( function() {
640 item = $( this );
641 return item.offset().top - base - height < 0;
642 } );
643
644 this.focus( event, item );
645 } else {
646 this.focus( event, this._menuItems( this.activeMenu )
647 [ !this.active ? "first" : "last" ]() );
648 }
649 },
650
651 previousPage: function( event ) {
652 var item, base, height;
653 if ( !this.active ) {
654 this.next( event );
655 return;
656 }
657 if ( this.isFirstItem() ) {
658 return;
659 }
660 if ( this._hasScroll() ) {
661 base = this.active.offset().top;
662 height = this.element.innerHeight();
663
664 // jQuery 3.2 doesn't include scrollbars in innerHeight, add it back.
665 if ( $.fn.jquery.indexOf( "3.2." ) === 0 ) {
666 height += this.element[ 0 ].offsetHeight - this.element.outerHeight();
667 }
668
669 this.active.prevAll( ".ui-menu-item" ).each( function() {
670 item = $( this );
671 return item.offset().top - base + height > 0;
672 } );
673
674 this.focus( event, item );
675 } else {
676 this.focus( event, this._menuItems( this.activeMenu ).first() );
677 }
678 },
679
680 _hasScroll: function() {
681 return this.element.outerHeight() < this.element.prop( "scrollHeight" );
682 },
683
684 select: function( event ) {
685
686 // TODO: It should never be possible to not have an active item at this
687 // point, but the tests don't trigger mouseenter before click.
688 this.active = this.active || $( event.target ).closest( ".ui-menu-item" );
689 var ui = { item: this.active };
690 if ( !this.active.has( ".ui-menu" ).length ) {
691 this.collapseAll( event, true );
692 }
693 this._trigger( "select", event, ui );
694 },
695
696 _filterMenuItems: function( character ) {
697 var escapedCharacter = character.replace( /[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&" ),
698 regex = new RegExp( "^" + escapedCharacter, "i" );
699
700 return this.activeMenu
701 .find( this.options.items )
702
703 // Only match on items, not dividers or other content (#10571)
704 .filter( ".ui-menu-item" )
705 .filter( function() {
706 return regex.test(
707 String.prototype.trim.call(
708 $( this ).children( ".ui-menu-item-wrapper" ).text() ) );
709 } );
710 }
711} );
712
713} );
714