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https://itb.edu.ec/statics/vendor/typeahead/bootstrap3-typeahead.js

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1/* =============================================================
2 * bootstrap3-typeahead.js v4.0.2
3 * https://github.com/bassjobsen/Bootstrap-3-Typeahead
4 * =============================================================
5 * Original written by @mdo and @fat
6 * =============================================================
7 * Copyright 2014 Bass Jobsen @bassjobsen
8 *
9 * Licensed under the Apache License, Version 2.0 (the 'License');
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
12 *
13 * http://www.apache.org/licenses/LICENSE-2.0
14 *
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an 'AS IS' BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 * ============================================================ */
21
22
23(function (root, factory) {
24
25    'use strict';
26
27    // CommonJS module is defined
28    if (typeof module !== 'undefined' && module.exports) {
29        module.exports = factory(require('jquery'));
30    }
31    // AMD module is defined
32    else if (typeof define === 'function' && define.amd) {
33        define(['jquery'], function ($) {
34            return factory($);
35        });
36    } else {
37        factory(root.jQuery);
38    }
39
40}(this, function ($) {
41
42    'use strict';
43    // jshint laxcomma: true
44
45
46    /* TYPEAHEAD PUBLIC CLASS DEFINITION
47     * ================================= */
48
49    var Typeahead = function (element, options) {
50        this.$element = $(element);
51        this.options = $.extend({}, Typeahead.defaults, options);
52        this.matcher = this.options.matcher || this.matcher;
53        this.sorter = this.options.sorter || this.sorter;
54        this.select = this.options.select || this.select;
55        this.autoSelect = typeof this.options.autoSelect == 'boolean' ? this.options.autoSelect : true;
56        this.highlighter = this.options.highlighter || this.highlighter;
57        this.render = this.options.render || this.render;
58        this.updater = this.options.updater || this.updater;
59        this.displayText = this.options.displayText || this.displayText;
60        this.itemLink = this.options.itemLink || this.itemLink;
61        this.itemTitle = this.options.itemTitle || this.itemTitle;
62        this.followLinkOnSelect = this.options.followLinkOnSelect || this.followLinkOnSelect;
63        this.source = this.options.source;
64        this.delay = this.options.delay;
65        this.theme = this.options.theme && this.options.themes && this.options.themes[this.options.theme] || Typeahead.defaults.themes[Typeahead.defaults.theme];
66        this.$menu = $(this.options.menu || this.theme.menu);
67        this.$appendTo = this.options.appendTo ? $(this.options.appendTo) : null;
68        this.fitToElement = typeof this.options.fitToElement == 'boolean' ? this.options.fitToElement : false;
69        this.shown = false;
70        this.listen();
71        this.showHintOnFocus = typeof this.options.showHintOnFocus == 'boolean' || this.options.showHintOnFocus === 'all' ? this.options.showHintOnFocus : false;
72        this.afterSelect = this.options.afterSelect;
73        this.afterEmptySelect = this.options.afterEmptySelect;
74        this.addItem = false;
75        this.value = this.$element.val() || this.$element.text();
76        this.keyPressed = false;
77        this.focused = this.$element.is(':focus');
78        this.changeInputOnSelect = this.options.changeInputOnSelect || this.changeInputOnSelect;
79        this.changeInputOnMove = this.options.changeInputOnMove || this.changeInputOnMove;
80        this.openLinkInNewTab = this.options.openLinkInNewTab || this.openLinkInNewTab;
81        this.selectOnBlur = this.options.selectOnBlur || this.selectOnBlur;
82        this.showCategoryHeader = this.options.showCategoryHeader || this.showCategoryHeader;
83    };
84
85    Typeahead.prototype = {
86
87        constructor: Typeahead,
88
89
90        setDefault: function (val) {
91            // var val = this.$menu.find('.active').data('value');
92            this.$element.data('active', val);
93            if (this.autoSelect || val) {
94                var newVal = this.updater(val);
95                // Updater can be set to any random functions via "options" parameter in constructor above.
96                // Add null check for cases when updater returns void or undefined.
97                if (!newVal) {
98                    newVal = '';
99                }
100                this.$element
101                    .val(this.displayText(newVal) || newVal)
102                    .text(this.displayText(newVal) || newVal)
103                    .change();
104                this.afterSelect(newVal);
105            }
106            return this.hide();
107        },
108
109        select: function () {
110            var val = this.$menu.find('.active').data('value');
111
112            this.$element.data('active', val);
113            if (this.autoSelect || val) {
114                var newVal = this.updater(val);
115                // Updater can be set to any random functions via "options" parameter in constructor above.
116                // Add null check for cases when updater returns void or undefined.
117                if (!newVal) {
118                    newVal = '';
119                }
120
121                if (this.changeInputOnSelect) {
122                    this.$element
123                        .val(this.displayText(newVal) || newVal)
124                        .text(this.displayText(newVal) || newVal)
125                        .change();
126                }
127
128                if (this.followLinkOnSelect && this.itemLink(val)) {
129                    if (this.openLinkInNewTab) {
130                        window.open(this.itemLink(val), '_blank');
131                    } else {
132                        document.location = this.itemLink(val);
133                    }
134                    this.afterSelect(newVal);
135                } else if (this.followLinkOnSelect && !this.itemLink(val)) {
136                    this.afterEmptySelect(newVal);
137                } else {
138                    this.afterSelect(newVal);
139                }
140            } else {
141                this.afterEmptySelect();
142            }
143
144            return this.hide();
145        },
146
147        updater: function (item) {
148            return item;
149        },
150
151        setSource: function (source) {
152            this.source = source;
153        },
154
155        show: function () {
156            var pos = $.extend({}, this.$element.position(), {
157                height: this.$element[0].offsetHeight
158            });
159
160            var scrollHeight = typeof this.options.scrollHeight == 'function' ?
161                this.options.scrollHeight.call() :
162                this.options.scrollHeight;
163
164            var element;
165            if (this.shown) {
166                element = this.$menu;
167            } else if (this.$appendTo) {
168                element = this.$menu.appendTo(this.$appendTo);
169                this.hasSameParent = this.$appendTo.is(this.$element.parent());
170            } else {
171                element = this.$menu.insertAfter(this.$element);
172                this.hasSameParent = true;
173            }
174
175            if (!this.hasSameParent) {
176                // We cannot rely on the element position, need to position relative to the window
177                element.css('position', 'fixed');
178                var offset = this.$element.offset();
179                pos.top = offset.top;
180                pos.left = offset.left;
181            }
182            // The rules for bootstrap are: 'dropup' in the parent and 'dropdown-menu-right' in the element.
183            // Note that to get right alignment, you'll need to specify `menu` in the options to be:
184            // '<ul class="typeahead dropdown-menu" role="listbox"></ul>'
185            var dropup = $(element).parent().hasClass('dropup');
186            var newTop = dropup ? 'auto' : (pos.top + pos.height + scrollHeight);
187            var right = $(element).hasClass('dropdown-menu-right');
188            var newLeft = right ? 'auto' : pos.left;
189            // it seems like setting the css is a bad idea (just let Bootstrap do it), but I'll keep the old
190            // logic in place except for the dropup/right-align cases.
191            element.css({ top: newTop, left: newLeft }).show();
192
193            if (this.options.fitToElement === true) {
194                element.css('width', this.$element.outerWidth() + 'px');
195            }
196
197            this.shown = true;
198            return this;
199        },
200
201        hide: function () {
202            this.$menu.hide();
203            this.shown = false;
204            return this;
205        },
206
207        lookup: function (query) {
208            if (typeof(query) != 'undefined' && query !== null) {
209                this.query = query;
210            } else {
211                this.query = this.$element.val();
212            }
213
214            if (this.query.length < this.options.minLength && !this.options.showHintOnFocus) {
215                return this.shown ? this.hide() : this;
216            }
217
218            var worker = $.proxy(function () {
219
220                // Bloodhound (since 0.11) needs three arguments.
221                // Two of them are callback functions (sync and async) for local and remote data processing
222                // see https://github.com/twitter/typeahead.js/blob/master/src/bloodhound/bloodhound.js#L132
223                if ($.isFunction(this.source) && this.source.length === 3) {
224                    this.source(this.query, $.proxy(this.process, this), $.proxy(this.process, this));
225                } else if ($.isFunction(this.source)) {
226                    this.source(this.query, $.proxy(this.process, this));
227                } else if (this.source) {
228                    this.process(this.source);
229                }
230            }, this);
231
232            clearTimeout(this.lookupWorker);
233            this.lookupWorker = setTimeout(worker, this.delay);
234        },
235
236        process: function (items) {
237            var that = this;
238
239            items = $.grep(items, function (item) {
240                return that.matcher(item);
241            });
242
243            items = this.sorter(items);
244
245            if (!items.length && !this.options.addItem) {
246                return this.shown ? this.hide() : this;
247            }
248
249            if (items.length > 0) {
250                this.$element.data('active', items[0]);
251            } else {
252                this.$element.data('active', null);
253            }
254
255            if (this.options.items != 'all') {
256                items = items.slice(0, this.options.items);
257            }
258
259            // Add item
260            if (this.options.addItem) {
261                items.push(this.options.addItem);
262            }
263
264            return this.render(items).show();
265        },
266
267        matcher: function (item) {
268            // console.log(item);
269            var it = this.displayText(item);
270            return ~it.toLowerCase().indexOf(this.query.toLowerCase());
271        },
272
273        sorter: function (items) {
274            var beginswith = [];
275            var caseSensitive = [];
276            var caseInsensitive = [];
277            var item;
278
279            while ((item = items.shift())) {
280                var it = this.displayText(item);
281                if (!it.toLowerCase().indexOf(this.query.toLowerCase())) {
282                    beginswith.push(item);
283                } else if (~it.indexOf(this.query)) {
284                    caseSensitive.push(item);
285                } else {
286                    caseInsensitive.push(item);
287                }
288            }
289
290            return beginswith.concat(caseSensitive, caseInsensitive);
291        },
292
293        highlighter: function (item) {
294            var text = this.query;
295            if (text === '') {
296                return item;
297            }
298            var matches = item.match(/(>)([^<]*)(<)/g);
299            var first = [];
300            var second = [];
301            var i;
302            if (matches && matches.length) {
303                // html
304                for (i = 0; i < matches.length; ++i) {
305                    if (matches[i].length > 2) {// escape '><'
306                        first.push(matches[i]);
307                    }
308                }
309            } else {
310                // text
311                first = [];
312                first.push(item);
313            }
314            text = text.replace((/[\(\)\/\.\*\+\?\[\]]/g), function (mat) {
315                return '\\' + mat;
316            });
317            var reg = new RegExp(text, 'g');
318            var m;
319            for (i = 0; i < first.length; ++i) {
320                m = first[i].match(reg);
321                if (m && m.length > 0) {// find all text nodes matches
322                    second.push(first[i]);
323                }
324            }
325            for (i = 0; i < second.length; ++i) {
326                item = item.replace(second[i], second[i].replace(reg, '<strong>$&</strong>'));
327            }
328            return item;
329        },
330
331        render: function (items) {
332            var that = this;
333            var self = this;
334            var activeFound = false;
335            var data = [];
336            var _category = that.options.separator;
337
338            $.each(items, function (key, value) {
339                // inject separator
340                if (key > 0 && value[_category] !== items[key - 1][_category]) {
341                    data.push({
342                        __type: 'divider'
343                    });
344                }
345
346                if (this.showCategoryHeader) {
347                    // inject category header
348                    if (value[_category] && (key === 0 || value[_category] !== items[key - 1][_category])) {
349                        data.push({
350                            __type: 'category',
351                            name: value[_category]
352                        });
353                    }
354                }
355
356                data.push(value);
357            });
358
359            items = $(data).map(function (i, item) {
360                    if ((item.__type || false) == 'category'){
361                        return $(that.options.headerHtml || that.theme.headerHtml).text(item.name)[0];
362                    }
363
364                    if ((item.__type || false) == 'divider'){
365                        return $(that.options.headerDivider || that.theme.headerDivider)[0];
366                    }
367
368                    var text = self.displayText(item);
369                    i = $(that.options.item || that.theme.item).data('value', item);
370                    i.find(that.options.itemContentSelector || that.theme.itemContentSelector)
371                        .addBack(that.options.itemContentSelector || that.theme.itemContentSelector)
372                        .html(that.highlighter(text, item));
373                    if(that.options.followLinkOnSelect) {
374                        i.find('a').attr('href', self.itemLink(item));
375                    }
376                    i.find('a').attr('title', self.itemTitle(item));
377                    if (text == self.$element.val()) {
378                        i.addClass('active');
379                        self.$element.data('active', item);
380                        activeFound = true;
381                    }
382                    return i[0];
383                });
384
385            if (this.autoSelect && !activeFound) {
386                items.filter(':not(.dropdown-header)').first().addClass('active');
387                this.$element.data('active', items.first().data('value'));
388            }
389            this.$menu.html(items);
390            return this;
391        },
392
393        displayText: function (item) {
394            return typeof item !== 'undefined' && typeof item.name != 'undefined' ? item.name : item;
395        },
396
397        itemLink: function (item) {
398            return null;
399        },
400
401        itemTitle: function (item) {
402            return null;
403        },
404
405        next: function (event) {
406            var active = this.$menu.find('.active').removeClass('active');
407            var next = active.next();
408
409            if (!next.length) {
410                next = $(this.$menu.find($(this.options.item || this.theme.item).prop('tagName'))[0]);
411            }
412
413            while (next.hasClass('divider') || next.hasClass('dropdown-header')) {
414                next = next.next();
415            }
416
417            next.addClass('active');
418            // added for screen reader
419            var newVal = this.updater(next.data('value'));
420            if (this.changeInputOnMove) {
421                this.$element.val(this.displayText(newVal) || newVal);
422            }
423        },
424
425        prev: function (event) {
426            var active = this.$menu.find('.active').removeClass('active');
427            var prev = active.prev();
428
429            if (!prev.length) {
430                prev = this.$menu.find($(this.options.item || this.theme.item).prop('tagName')).last();
431            }
432
433            while (prev.hasClass('divider') || prev.hasClass('dropdown-header')) {
434                prev = prev.prev();
435            }
436
437            prev.addClass('active');
438            // added for screen reader
439            var newVal = this.updater(prev.data('value'));
440            if (this.changeInputOnMove) {
441                this.$element.val(this.displayText(newVal) || newVal);
442            }
443        },
444
445        listen: function () {
446            this.$element
447                .on('focus.bootstrap3Typeahead', $.proxy(this.focus, this))
448                .on('blur.bootstrap3Typeahead', $.proxy(this.blur, this))
449                .on('keypress.bootstrap3Typeahead', $.proxy(this.keypress, this))
450                .on('propertychange.bootstrap3Typeahead input.bootstrap3Typeahead', $.proxy(this.input, this))
451                .on('keyup.bootstrap3Typeahead', $.proxy(this.keyup, this));
452
453            if (this.eventSupported('keydown')) {
454                this.$element.on('keydown.bootstrap3Typeahead', $.proxy(this.keydown, this));
455            }
456
457            var itemTagName = $(this.options.item || this.theme.item).prop('tagName');
458            if ('ontouchstart' in document.documentElement && 'onmousemove' in document.documentElement) {
459		        this.$menu
460		            .on('touchstart', itemTagName, $.proxy(this.touchstart, this))
461		            .on('touchend', itemTagName, $.proxy(this.click, this))
462		            .on('click', $.proxy(this.click, this))
463		            .on('mouseenter', itemTagName, $.proxy(this.mouseenter, this))
464		            .on('mouseleave', itemTagName, $.proxy(this.mouseleave, this))
465		            .on('mousedown', $.proxy(this.mousedown,this));
466	        } else if ('ontouchstart' in document.documentElement) {
467		        this.$menu
468		            .on('touchstart', itemTagName, $.proxy(this.touchstart, this))
469		            .on('touchend', itemTagName, $.proxy(this.click, this));
470	        } else {
471                this.$menu
472                    .on('click', $.proxy(this.click, this))
473                    .on('mouseenter', itemTagName, $.proxy(this.mouseenter, this))
474                    .on('mouseleave', itemTagName, $.proxy(this.mouseleave, this))
475                    .on('mousedown', $.proxy(this.mousedown, this));
476            }
477        },
478
479        destroy: function () {
480            this.$element.data('typeahead', null);
481            this.$element.data('active', null);
482            this.$element
483                .unbind('focus.bootstrap3Typeahead')
484                .unbind('blur.bootstrap3Typeahead')
485                .unbind('keypress.bootstrap3Typeahead')
486                .unbind('propertychange.bootstrap3Typeahead input.bootstrap3Typeahead')
487                .unbind('keyup.bootstrap3Typeahead');
488
489            if (this.eventSupported('keydown')) {
490                this.$element.unbind('keydown.bootstrap3-typeahead');
491            }
492
493            this.$menu.remove();
494            this.destroyed = true;
495        },
496
497        eventSupported: function (eventName) {
498            var isSupported = eventName in this.$element;
499            if (!isSupported) {
500                this.$element.setAttribute(eventName, 'return;');
501                isSupported = typeof this.$element[eventName] === 'function';
502            }
503            return isSupported;
504        },
505
506        move: function (e) {
507            if (!this.shown) {
508                return;
509            }
510
511            switch (e.keyCode) {
512                case 9: // tab
513                case 13: // enter
514                case 27: // escape
515                    e.preventDefault();
516                    break;
517
518                case 38: // up arrow
519                    // with the shiftKey (this is actually the left parenthesis)
520                    if (e.shiftKey) {
521                        return;
522                    }
523                    e.preventDefault();
524                    this.prev();
525                    break;
526
527                case 40: // down arrow
528                    // with the shiftKey (this is actually the right parenthesis)
529                    if (e.shiftKey) {
530                        return;
531                    }
532                    e.preventDefault();
533                    this.next();
534                    break;
535            }
536        },
537
538        keydown: function (e) {
539            /**
540             * Prevent to make an ajax call while copying and pasting.
541             *
542             * @author Simone Sacchi
543             * @version 2018/01/18
544             */
545            if (e.keyCode === 17) { // ctrl
546                return;
547            }
548            this.keyPressed = true;
549            this.suppressKeyPressRepeat = ~$.inArray(e.keyCode, [40, 38, 9, 13, 27]);
550            if (!this.shown && e.keyCode == 40) {
551                this.lookup();
552            } else {
553                this.move(e);
554            }
555        },
556
557        keypress: function (e) {
558            if (this.suppressKeyPressRepeat) {
559                return;
560            }
561            this.move(e);
562        },
563
564        input: function (e) {
565            // This is a fixed for IE10/11 that fires the input event when a placehoder is changed
566            // (https://connect.microsoft.com/IE/feedback/details/810538/ie-11-fires-input-event-on-focus)
567            var currentValue = this.$element.val() || this.$element.text();
568            if (this.value !== currentValue) {
569                this.value = currentValue;
570                this.lookup();
571            }
572        },
573
574        keyup: function (e) {
575            if (this.destroyed) {
576                return;
577            }
578            switch (e.keyCode) {
579                case 40: // down arrow
580                case 38: // up arrow
581                case 16: // shift
582                case 17: // ctrl
583                case 18: // alt
584                    break;
585
586                case 9: // tab
587                    if (!this.shown || (this.showHintOnFocus && !this.keyPressed)) {
588                        return;
589                    }
590                    this.select();
591                    break;
592                case 13: // enter
593                    if (!this.shown) {
594                        return;
595                    }
596                    this.select();
597                    break;
598
599                case 27: // escape
600                    if (!this.shown) {
601                        return;
602                    }
603                    this.hide();
604                    break;
605            }
606
607        },
608
609        focus: function (e) {
610            if (!this.focused) {
611                this.focused = true;
612                this.keyPressed = false;
613                if (this.options.showHintOnFocus && this.skipShowHintOnFocus !== true) {
614                    if (this.options.showHintOnFocus === 'all') {
615                        this.lookup('');
616                    } else {
617                        this.lookup();
618                    }
619                }
620            }
621            if (this.skipShowHintOnFocus) {
622                this.skipShowHintOnFocus = false;
623            }
624        },
625
626        blur: function (e) {
627            if (!this.mousedover && !this.mouseddown && this.shown) {
628                if (this.selectOnBlur) {
629                    this.select();
630                }
631                this.hide();
632                this.focused = false;
633                this.keyPressed = false;
634            } else if (this.mouseddown) {
635                // This is for IE that blurs the input when user clicks on scroll.
636                // We set the focus back on the input and prevent the lookup to occur again
637                this.skipShowHintOnFocus = true;
638                this.$element.focus();
639                this.mouseddown = false;
640            }
641        },
642
643        click: function (e) {
644            e.preventDefault();
645            this.skipShowHintOnFocus = true;
646            this.select();
647            this.$element.focus();
648            this.hide();
649        },
650
651        mouseenter: function (e) {
652            this.mousedover = true;
653            this.$menu.find('.active').removeClass('active');
654            $(e.currentTarget).addClass('active');
655        },
656
657        mouseleave: function (e) {
658            this.mousedover = false;
659            if (!this.focused && this.shown) {
660                this.hide();
661            }
662        },
663
664        /**
665         * We track the mousedown for IE. When clicking on the menu scrollbar, IE makes the input blur thus hiding the menu.
666         */
667        mousedown: function (e) {
668            this.mouseddown = true;
669            this.$menu.one('mouseup', function (e) {
670                // IE won't fire this, but FF and Chrome will so we reset our flag for them here
671                this.mouseddown = false;
672            }.bind(this));
673        },
674
675        touchstart: function (e) {
676            e.preventDefault();
677            this.$menu.find('.active').removeClass('active');
678            $(e.currentTarget).addClass('active');
679        },
680
681        touchend: function (e) {
682            e.preventDefault();
683            this.select();
684            this.$element.focus();
685        }
686
687    };
688
689
690    /* TYPEAHEAD PLUGIN DEFINITION
691     * =========================== */
692
693    var old = $.fn.typeahead;
694
695    $.fn.typeahead = function (option) {
696        var arg = arguments;
697        if (typeof option == 'string' && option == 'getActive') {
698            return this.data('active');
699        }
700        return this.each(function () {
701            var $this = $(this);
702            var data = $this.data('typeahead');
703            var options = typeof option == 'object' && option;
704            if (!data) {
705                $this.data('typeahead', (data = new Typeahead(this, options)));
706            }
707            if (typeof option == 'string' && data[option]) {
708                if (arg.length > 1) {
709                    data[option].apply(data, Array.prototype.slice.call(arg, 1));
710                } else {
711                    data[option]();
712                }
713            }
714        });
715    };
716
717    Typeahead.defaults = {
718        source: [],
719        items: 8,
720        minLength: 1,
721        scrollHeight: 0,
722        autoSelect: true,
723        afterSelect: $.noop,
724        afterEmptySelect: $.noop,
725        addItem: false,
726        followLinkOnSelect: false,
727        delay: 0,
728        separator: 'category',
729        changeInputOnSelect: true,
730        changeInputOnMove: true,
731        openLinkInNewTab: false,
732        selectOnBlur: true,
733        showCategoryHeader: true,
734        theme: "bootstrap3",
735        themes: {
736        bootstrap3: {
737            menu: '<ul class="typeahead dropdown-menu" role="listbox"></ul>',
738            item: '<li><a class="dropdown-item" href="#" role="option"></a></li>',
739            itemContentSelector: "a",
740            headerHtml: '<li class="dropdown-header"></li>',
741            headerDivider: '<li class="divider" role="separator"></li>'
742        },
743        bootstrap4: {
744            menu: '<div class="typeahead dropdown-menu" role="listbox"></div>',
745            item: '<button class="dropdown-item" role="option"></button>',
746            itemContentSelector: '.dropdown-item',
747            headerHtml: '<h6 class="dropdown-header"></h6>',
748            headerDivider: '<div class="dropdown-divider"></div>'
749        }
750    }
751};
752
753    $.fn.typeahead.Constructor = Typeahead;
754
755    /* TYPEAHEAD NO CONFLICT
756     * =================== */
757
758    $.fn.typeahead.noConflict = function () {
759        $.fn.typeahead = old;
760        return this;
761    };
762
763
764    /* TYPEAHEAD DATA-API
765     * ================== */
766
767    $(document).on('focus.typeahead.data-api', '[data-provide="typeahead"]', function (e) {
768        var $this = $(this);
769        if ($this.data('typeahead')) {
770            return;
771        }
772        $this.typeahead($this.data());
773    });
774
775}));

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