mirror of
https://github.com/itflow-org/itflow
synced 2026-11-11 15:07:24 +00:00
1239 lines
45 KiB
JavaScript
1239 lines
45 KiB
JavaScript
/*
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* ITFlow select - the picker behind every <select class="select2">.
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*
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* Replaces Tom Select. Written for this app, vanilla, no dependencies.
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*
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* THE NATIVE <select> IS THE ONLY STATE
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*
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* The picker keeps no copy of the options or the value. Every time it draws it
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* reads them off the real <select>, and every pick is written straight back to
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* it (option.selected) followed by real input/change events. So the form posts
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* exactly what you see, inline onchange="this.form.submit()" handlers fire,
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* and any other script can keep treating the field as an ordinary <select>:
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*
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* select.innerHTML = ... redraws by itself (MutationObserver)
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* select.value = 4 redraws by itself (value setter, see below)
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* option.selected = true redraws by itself
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* form.reset() redraws by itself
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*
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* There is nothing to "sync" or "refresh" by hand, which is where the old
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* widget kept drifting out of step with the form.
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*
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* WHAT IT LOOKS LIKE
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*
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* The field is a .form-select, so it is the same height, border, chevron and
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* focus ring as every other control and drops into .input-group as before.
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* Clicking it opens a panel with a search box (long lists, multi selects and
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* data-tags fields), the options, and a tick on what is chosen. Multi selects
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* show chips in the field and a checklist in the panel that stays open while
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* you pick; their change event fires once, when the panel closes, so a filter
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* that submits on change submits once with everything you picked. On a phone
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* the panel comes up from the bottom of the screen instead.
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*
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* OPTION EXTRAS - all optional, set on the <option>:
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*
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* data-image="/uploads/.." round picture (users, contacts)
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* data-initials="RDG" initials tile; data-tone="primary" colours it,
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* data-shape="circle" makes it round (people),
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* data-soft="1" puts it on the soft shade of
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* that colour (contacts - their avatar's look)
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* data-color="#e74c3c" colour dot (tags, categories, statuses)
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* data-icon="fas fa-laptop" icon; with data-color it sits on that colour
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* data-description=".." second, quieter line under the label
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* data-keywords=".." extra words the search should match
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*
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* functions/format.php has PHP helpers that write these for clients, users,
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* contacts, tags and categories. Labels written as "- Unassigned -" show
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* without the dashes, in a quieter colour, as the "nothing" choice.
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*
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* ON THE <select>:
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*
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* data-placeholder=".." text while nothing is chosen
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* data-tags="true" typed text that matches nothing can be added
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* data-search="true|false" force the search box on or off
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* data-avatar="initials" initials tiles for options that have no
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* picture (for lists filled in by JS)
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*
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* FROM CODE: select.itflowSelect is the picker - .open(), .close(),
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* .clear(), .setValue(v). itflowSelectAll(root) enhances anything not yet
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* done; it also happens by itself for selects added to the page later, and
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* again whenever includes/modal_footer.php re-runs this file for a modal.
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*
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* Loaded first in includes/footer.php, ahead of the heavy libraries, so the
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* swap happens before the page has finished drawing - see the note there.
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*/
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(function () {
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'use strict';
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// Re-run by every ajax modal. The second time there is nothing to set up,
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// just the modal's own selects to pick up.
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if (window.itflowSelectAll) {
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window.itflowSelectAll(document);
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return;
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}
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var SEARCH_FROM = 9; // options before a search box is worth showing
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var RESULT_LIMIT = 200; // rows drawn at once; typing narrows the rest
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var CHIP_LIMIT = 10; // chips in the field before "+N more"
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var TONES = ['primary', 'success', 'info', 'warning', 'secondary'];
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var NONE_LABEL = /^\s*-\s*(.*?)\s*-\s*$/;
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var sheetMedia = window.matchMedia('(max-width: 575.98px)');
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var finePointer = window.matchMedia('(pointer: fine)');
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var counter = 0;
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var current = null; // the picker whose panel is open
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/* ---------- small helpers ---------- */
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function make(tag, className, text) {
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var node = document.createElement(tag);
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if (className) {
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node.className = className;
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}
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if (text !== undefined && text !== null && text !== '') {
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node.textContent = text;
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}
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return node;
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}
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function fold(text) {
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return String(text || '').normalize('NFD').replace(/[̀-ͯ]/g, '').toLowerCase();
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}
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function initialsOf(text) {
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var words = String(text).replace(/[^\p{L}\p{N}\s]/gu, ' ').trim().split(/\s+/);
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return ((words[0] || '').charAt(0) + (words.length > 1 ? words[1].charAt(0) : (words[0] || '').charAt(1))).toUpperCase();
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}
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function printable(e) {
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return e.key.length === 1 && !e.ctrlKey && !e.metaKey && !e.altKey;
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}
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function selectOf(option) {
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var parent = option.parentNode;
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if (parent && parent.tagName === 'OPTGROUP') {
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parent = parent.parentNode;
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}
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return parent && parent.tagName === 'SELECT' ? parent : null;
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}
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function labelText(select) {
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var label = select.labels && select.labels[0];
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if (!label) {
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var box = select.closest('.mb-3, .form-group, [class^="col"], [class*=" col"]');
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label = box && box.querySelector('label');
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}
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return label ? label.textContent.replace(/\*/g, '').trim() : '';
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}
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/* Everything the picker draws for one <option>, read fresh each time. */
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function describe(option, select) {
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var data = option.dataset;
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var raw = (option.label || option.textContent || '').trim();
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var none = NONE_LABEL.exec(raw);
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var group = option.parentNode.tagName === 'OPTGROUP' ? option.parentNode : null;
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var icon = data.icon || '';
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var item = {
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option: option,
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value: option.value,
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label: none ? none[1] : raw,
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none: !!none || option.value === '',
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description: data.description || '',
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icon: icon && icon.indexOf('fa-') === -1 ? 'fas fa-' + icon : icon,
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image: data.image || '',
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color: data.color || '',
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initials: data.initials || '',
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tone: data.tone || '',
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shape: data.shape || '',
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soft: data.soft === '1',
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disabled: option.disabled || !!(group && group.disabled),
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group: group ? group.label : ''
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};
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if (select.dataset.avatar === 'initials' && !item.none && !item.image && !item.initials && item.label) {
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item.initials = initialsOf(item.label);
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item.shape = item.shape || 'circle';
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item.tone = item.tone || TONES[Math.abs(parseInt(item.value, 10) || 0) % TONES.length];
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}
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item.search = fold(item.label + ' ' + item.description + ' ' + (data.keywords || ''));
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return item;
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}
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/* The picture, tile, dot or icon in front of a label - or nothing. */
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function lead(item) {
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var node, tone;
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if (item.image) {
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node = make('img', 'itflow-select-avatar');
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node.src = item.image;
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node.alt = '';
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node.loading = 'lazy';
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} else if (item.initials) {
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tone = TONES.indexOf(item.tone) === -1 ? 'secondary' : item.tone;
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node = make('span', 'itflow-select-avatar ' + (item.soft ? 'bg-' + tone + '-subtle text-' + tone + '-emphasis' : 'text-bg-' + tone) + (item.shape === 'circle' ? '' : ' is-tile'), item.initials);
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} else if (item.icon && item.color) {
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node = make('span', 'itflow-select-badge');
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node.style.setProperty('--itflow-select-color', item.color);
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node.appendChild(make('i', item.icon));
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} else if (item.color) {
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node = make('span', 'itflow-select-dot');
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node.style.setProperty('--itflow-select-color', item.color);
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} else if (item.icon) {
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node = make('span', 'itflow-select-icon');
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node.appendChild(make('i', item.icon));
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} else {
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return null;
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}
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node.setAttribute('aria-hidden', 'true');
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return node;
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}
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/* Write text into node with the searched-for words in <mark>. */
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function highlight(node, text, terms) {
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if (!terms.length) {
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node.textContent = text;
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return;
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}
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var lower = text.toLowerCase();
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var ranges = [];
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terms.forEach(function (term) {
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var at = lower.indexOf(term);
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while (term && at !== -1) {
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ranges.push([at, at + term.length]);
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at = lower.indexOf(term, at + term.length);
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}
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});
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if (!ranges.length) {
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node.textContent = text;
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return;
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}
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ranges.sort(function (a, b) { return a[0] - b[0]; });
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var pos = 0;
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ranges.forEach(function (range) {
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if (range[1] <= pos) {
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return;
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}
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var start = Math.max(range[0], pos);
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if (start > pos) {
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node.appendChild(document.createTextNode(text.slice(pos, start)));
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}
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node.appendChild(make('mark', '', text.slice(start, range[1])));
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pos = range[1];
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});
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if (pos < text.length) {
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node.appendChild(document.createTextNode(text.slice(pos)));
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}
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}
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/* ---------- the picker ---------- */
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function Picker(select) {
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var self = this;
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this.select = select;
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this.id = 'itflow-select-' + (++counter);
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this.multiple = select.multiple;
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this.tags = select.dataset.tags === 'true';
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this.label = labelText(select);
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this.isOpen = false;
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this.query = '';
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this.rows = [];
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this.active = -1;
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this.dirty = false;
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this.queued = false;
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var wrap = this.wrap = make('div', 'itflow-select' + (this.multiple ? ' is-multiple' : ''));
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var control = this.control = make('div', 'itflow-select-control form-select');
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control.setAttribute('role', 'combobox');
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control.setAttribute('aria-haspopup', 'listbox');
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control.setAttribute('aria-expanded', 'false');
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control.setAttribute('aria-controls', this.id + '-list');
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if (this.label || select.dataset.placeholder) {
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control.setAttribute('aria-label', this.label || select.dataset.placeholder);
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}
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if (select.required) {
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control.setAttribute('aria-required', 'true');
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}
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select.parentNode.insertBefore(wrap, select);
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wrap.appendChild(control);
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wrap.appendChild(select);
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select.classList.add('itflow-select-native');
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select.tabIndex = -1;
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select.setAttribute('aria-hidden', 'true');
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select.itflowSelect = this;
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control.addEventListener('click', function (e) {
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if (self.isDisabled()) {
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return;
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}
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var remove = e.target.closest('[data-remove]');
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if (remove) {
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self.unpick(remove.getAttribute('data-remove'));
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return;
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}
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if (e.target.closest('.itflow-select-clear')) {
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self.clear();
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control.focus();
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return;
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}
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if (self.isOpen) {
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self.close(true, true);
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} else {
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self.open();
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}
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});
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control.addEventListener('keydown', function (e) {
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self.key(e, false);
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});
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select.addEventListener('change', function () {
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self.queue();
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});
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select.addEventListener('invalid', function () {
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wrap.classList.add('is-invalid');
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});
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this.observer = new MutationObserver(function () {
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self.queue();
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});
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this.observer.observe(select, {
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childList: true,
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subtree: true,
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characterData: true,
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attributes: true,
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attributeFilter: ['disabled', 'required', 'label', 'selected', 'data-placeholder', 'class']
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});
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this.draw();
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}
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Picker.prototype.isDisabled = function () {
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return this.select.disabled || !!this.select.closest('fieldset:disabled');
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};
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Picker.prototype.hasSearch = function () {
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var forced = this.select.dataset.search;
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if (forced === 'true' || forced === 'false') {
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return forced === 'true';
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}
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return this.tags || this.select.options.length >= SEARCH_FROM;
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};
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Picker.prototype.placeholder = function () {
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var text = this.select.dataset.placeholder;
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if (text) {
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var none = NONE_LABEL.exec(text);
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return none ? none[1] : text;
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}
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var first = this.select.options[0];
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if (first && first.value === '') {
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var item = describe(first, this.select);
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if (item.label) {
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return item.label;
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}
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}
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return this.multiple ? 'Choose' : 'Select';
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};
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/* The option that means "nothing" - an empty value, or a "- None -" label. */
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Picker.prototype.noneOption = function () {
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var options = this.select.options;
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for (var i = 0; i < options.length; i++) {
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if (options[i].value === '' || NONE_LABEL.test(options[i].label || options[i].textContent || '')) {
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return options[i];
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}
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}
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return null;
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};
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Picker.prototype.clearable = function () {
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if (this.select.required || this.isDisabled()) {
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return false;
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}
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if (this.multiple) {
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return false;
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}
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var none = this.noneOption();
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var chosen = this.select.selectedOptions[0];
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return !!(none && chosen && chosen !== none && !NONE_LABEL.test(chosen.label || ''));
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};
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Picker.prototype.chosen = function () {
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return Array.prototype.filter.call(this.select.selectedOptions, function (option) {
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return option.value !== '';
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});
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};
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/* Redraw on the next microtask - a burst of changes draws once. */
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Picker.prototype.queue = function () {
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var self = this;
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if (this.queued) {
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return;
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}
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this.queued = true;
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Promise.resolve().then(function () {
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self.queued = false;
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self.draw();
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if (self.isOpen) {
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self.filter(true);
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}
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});
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};
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/* The field itself. */
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Picker.prototype.draw = function () {
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var select = this.select;
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var control = this.control;
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var disabled = this.isDisabled();
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control.textContent = '';
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control.removeAttribute('title');
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this.wrap.classList.toggle('is-disabled', disabled);
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control.tabIndex = disabled ? -1 : 0;
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control.setAttribute('aria-disabled', disabled ? 'true' : 'false');
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if (this.wrap.classList.contains('is-invalid') && select.validity.valid) {
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this.wrap.classList.remove('is-invalid');
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}
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this.wrap.classList.toggle('is-invalid-class', select.classList.contains('is-invalid'));
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if (this.multiple) {
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var chosen = this.chosen();
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if (!chosen.length) {
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control.appendChild(make('span', 'itflow-select-placeholder', this.placeholder()));
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}
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chosen.slice(0, CHIP_LIMIT).forEach(function (option) {
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var item = describe(option, select);
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var chip = make('span', 'itflow-select-chip');
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var visual = lead(item);
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if (visual) {
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chip.appendChild(visual);
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chip.classList.add('has-lead');
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}
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chip.appendChild(make('span', 'itflow-select-chip-label', item.label));
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if (!disabled) {
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var remove = make('button', 'itflow-select-chip-remove');
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remove.type = 'button';
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remove.tabIndex = -1;
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remove.setAttribute('data-remove', item.value);
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remove.setAttribute('aria-label', 'Remove ' + item.label);
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remove.appendChild(make('i', 'fas fa-times'));
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chip.appendChild(remove);
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}
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control.appendChild(chip);
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});
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if (chosen.length > CHIP_LIMIT) {
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control.appendChild(make('span', 'itflow-select-chip is-more', '+' + (chosen.length - CHIP_LIMIT) + ' more'));
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}
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} else {
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var option = select.selectedOptions[0];
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var item = option ? describe(option, select) : null;
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var value = make('span', 'itflow-select-value');
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if (!item || item.value === '' || !item.label) {
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value.appendChild(make('span', 'itflow-select-placeholder', this.placeholder()));
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} else {
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var visual = lead(item);
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if (visual) {
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value.appendChild(visual);
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}
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value.appendChild(make('span', 'itflow-select-label' + (item.none ? ' is-none' : ''), item.label));
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control.title = item.label;
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}
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control.appendChild(value);
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}
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var clearable = this.clearable();
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this.wrap.classList.toggle('is-clearable', clearable);
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if (clearable) {
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var clear = make('button', 'itflow-select-clear');
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clear.type = 'button';
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clear.tabIndex = -1;
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clear.setAttribute('aria-label', 'Clear');
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clear.appendChild(make('i', 'fas fa-times'));
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control.appendChild(clear);
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}
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if (this.footerCount) {
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var count = this.chosen().length;
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this.footerCount.textContent = count ? count + ' selected' : 'None selected';
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this.footerClear.disabled = !count;
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}
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if (this.isOpen) {
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this.place();
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}
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};
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/* ---------- the panel ---------- */
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Picker.prototype.build = function () {
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if (this.panel) {
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return;
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}
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var self = this;
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var panel = this.panel = make('div', 'itflow-select-panel' + (this.multiple ? ' is-multiple' : ''));
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panel.id = this.id + '-panel';
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var head = make('div', 'itflow-select-sheet-head');
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head.appendChild(make('span', 'itflow-select-sheet-title', this.label || this.placeholder()));
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var done = make('button', 'btn btn-sm btn-link itflow-select-done', 'Done');
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done.type = 'button';
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done.addEventListener('click', function () {
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self.close(true, false);
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});
|
|
head.appendChild(done);
|
|
panel.appendChild(head);
|
|
|
|
var search = this.searchRow = make('div', 'itflow-select-search');
|
|
search.appendChild(make('i', 'fas fa-search'));
|
|
var input = this.input = make('input');
|
|
input.type = 'text';
|
|
input.autocomplete = 'off';
|
|
input.spellcheck = false;
|
|
input.placeholder = this.tags ? 'Search or add' : 'Search';
|
|
input.setAttribute('aria-label', 'Search ' + (this.label || 'options'));
|
|
input.setAttribute('aria-controls', this.id + '-list');
|
|
input.setAttribute('aria-autocomplete', 'list');
|
|
input.addEventListener('input', function () {
|
|
self.query = input.value;
|
|
self.filter(false);
|
|
});
|
|
input.addEventListener('keydown', function (e) {
|
|
self.key(e, true);
|
|
});
|
|
search.appendChild(input);
|
|
panel.appendChild(search);
|
|
|
|
var list = this.list = make('div', 'itflow-select-list');
|
|
list.id = this.id + '-list';
|
|
list.setAttribute('role', 'listbox');
|
|
if (this.label) {
|
|
list.setAttribute('aria-label', this.label);
|
|
}
|
|
if (this.multiple) {
|
|
list.setAttribute('aria-multiselectable', 'true');
|
|
}
|
|
panel.appendChild(list);
|
|
|
|
if (this.multiple) {
|
|
var footer = make('div', 'itflow-select-footer');
|
|
this.footerCount = make('span', '');
|
|
this.footerClear = make('button', 'btn btn-sm btn-link', 'Clear');
|
|
this.footerClear.type = 'button';
|
|
this.footerClear.addEventListener('click', function () {
|
|
self.clear();
|
|
});
|
|
footer.appendChild(this.footerCount);
|
|
footer.appendChild(this.footerClear);
|
|
panel.appendChild(footer);
|
|
}
|
|
|
|
// Keep focus where it is (the search box, or the field) while picking
|
|
panel.addEventListener('mousedown', function (e) {
|
|
if (e.target !== self.input && !e.target.closest('button')) {
|
|
e.preventDefault();
|
|
}
|
|
});
|
|
list.addEventListener('click', function (e) {
|
|
var node = e.target.closest('[data-row]');
|
|
if (node) {
|
|
self.pick(parseInt(node.getAttribute('data-row'), 10));
|
|
}
|
|
});
|
|
list.addEventListener('mousemove', function (e) {
|
|
if (e.clientX === self.lastX && e.clientY === self.lastY) {
|
|
return; // the list scrolled under a still pointer
|
|
}
|
|
self.lastX = e.clientX;
|
|
self.lastY = e.clientY;
|
|
var node = e.target.closest('[data-row]');
|
|
if (node) {
|
|
self.setActive(parseInt(node.getAttribute('data-row'), 10), false);
|
|
}
|
|
});
|
|
|
|
this.backdrop = make('div', 'itflow-select-backdrop');
|
|
};
|
|
|
|
Picker.prototype.open = function (typed) {
|
|
if (this.isOpen || this.isDisabled()) {
|
|
return;
|
|
}
|
|
if (current && current !== this) {
|
|
current.close(true, false);
|
|
}
|
|
this.build();
|
|
current = this;
|
|
this.isOpen = true;
|
|
this.sheet = sheetMedia.matches;
|
|
this.searching = this.hasSearch();
|
|
this.searchRow.hidden = !this.searching;
|
|
this.query = this.searching ? typed || '' : '';
|
|
this.input.value = this.query;
|
|
|
|
var host = this.control.closest('.modal, .offcanvas') || document.body;
|
|
this.panel.classList.toggle('is-sheet', this.sheet);
|
|
if (this.sheet) {
|
|
host.appendChild(this.backdrop);
|
|
}
|
|
host.appendChild(this.panel);
|
|
|
|
this.wrap.classList.add('is-open');
|
|
this.control.setAttribute('aria-expanded', 'true');
|
|
this.draw();
|
|
this.filter(false);
|
|
this.place();
|
|
|
|
if (this.searching && (finePointer.matches || typed)) {
|
|
this.input.focus({ preventScroll: true });
|
|
var end = this.input.value.length;
|
|
this.input.setSelectionRange(end, end);
|
|
} else {
|
|
this.control.focus({ preventScroll: true });
|
|
}
|
|
this.scrollToActive();
|
|
};
|
|
|
|
Picker.prototype.close = function (commit, refocus) {
|
|
if (!this.isOpen) {
|
|
return;
|
|
}
|
|
if (commit && this.tags && this.searching && this.query.trim()) {
|
|
this.add(this.query.trim(), false);
|
|
}
|
|
this.isOpen = false;
|
|
if (current === this) {
|
|
current = null;
|
|
}
|
|
this.panel.remove();
|
|
this.backdrop.remove();
|
|
this.panel.style.cssText = '';
|
|
this.list.style.maxHeight = '';
|
|
this.wrap.classList.remove('is-open');
|
|
this.control.setAttribute('aria-expanded', 'false');
|
|
this.control.removeAttribute('aria-activedescendant');
|
|
if (refocus) {
|
|
this.control.focus({ preventScroll: true });
|
|
}
|
|
if (this.dirty) {
|
|
this.dirty = false;
|
|
this.emit();
|
|
}
|
|
};
|
|
|
|
Picker.prototype.emit = function () {
|
|
this.select.dispatchEvent(new Event('input', { bubbles: true }));
|
|
this.select.dispatchEvent(new Event('change', { bubbles: true }));
|
|
};
|
|
|
|
/* Under the field, or over it when there is more room above. */
|
|
Picker.prototype.place = function () {
|
|
var panel = this.panel;
|
|
if (!this.isOpen) {
|
|
return;
|
|
}
|
|
if (!this.control.isConnected) {
|
|
this.close(false, false);
|
|
return;
|
|
}
|
|
if (this.sheet) {
|
|
return;
|
|
}
|
|
var rect = this.control.getBoundingClientRect();
|
|
var viewWidth = document.documentElement.clientWidth;
|
|
var viewHeight = window.innerHeight;
|
|
var edge = 8;
|
|
var gap = 4;
|
|
if (rect.bottom < 0 || rect.top > viewHeight) {
|
|
this.close(false, false);
|
|
return;
|
|
}
|
|
var width = Math.min(Math.max(rect.width, 240), viewWidth - edge * 2);
|
|
panel.style.width = width + 'px';
|
|
panel.style.left = Math.min(Math.max(edge, rect.left), viewWidth - width - edge) + 'px';
|
|
|
|
this.list.style.maxHeight = '';
|
|
var height = panel.offsetHeight;
|
|
var below = viewHeight - rect.bottom - gap - edge;
|
|
var above = rect.top - gap - edge;
|
|
var up = height > below && above > below;
|
|
var room = up ? above : below;
|
|
if (height > room) {
|
|
this.list.style.maxHeight = Math.max(96, this.list.offsetHeight - (height - room)) + 'px';
|
|
height = panel.offsetHeight;
|
|
}
|
|
panel.style.top = (up ? rect.top - gap - height : rect.bottom + gap) + 'px';
|
|
panel.classList.toggle('is-above', up);
|
|
};
|
|
|
|
/* Work out which options match the search and draw them. */
|
|
Picker.prototype.filter = function (keep) {
|
|
var select = this.select;
|
|
var query = this.query.trim();
|
|
var terms = fold(query).split(/\s+/).filter(Boolean);
|
|
var hideEmpty = this.multiple || select.required;
|
|
var view = [];
|
|
var total = 0;
|
|
var exact = false;
|
|
var options = select.options;
|
|
|
|
for (var i = 0; i < options.length; i++) {
|
|
var item = describe(options[i], select);
|
|
if (item.value === '' && (hideEmpty || !item.label)) {
|
|
continue;
|
|
}
|
|
if (terms.length) {
|
|
if (item.none) {
|
|
continue;
|
|
}
|
|
var hit = true;
|
|
for (var t = 0; t < terms.length; t++) {
|
|
if (item.search.indexOf(terms[t]) === -1) {
|
|
hit = false;
|
|
break;
|
|
}
|
|
}
|
|
if (!hit) {
|
|
continue;
|
|
}
|
|
if (fold(item.label) === fold(query)) {
|
|
exact = true;
|
|
}
|
|
}
|
|
total++;
|
|
if (view.length < RESULT_LIMIT) {
|
|
view.push(item);
|
|
}
|
|
}
|
|
|
|
this.terms = query.toLowerCase().split(/\s+/).filter(Boolean);
|
|
this.view = view;
|
|
this.total = total;
|
|
this.creatable = this.tags && query && !exact ? query : '';
|
|
this.drawList(keep);
|
|
};
|
|
|
|
Picker.prototype.drawList = function (keep) {
|
|
var self = this;
|
|
var list = this.list;
|
|
var before = keep && this.rows[this.active] ? this.rows[this.active].option : null;
|
|
var scroll = list.scrollTop;
|
|
var frag = document.createDocumentFragment();
|
|
var group = null;
|
|
|
|
list.textContent = '';
|
|
this.rows = [];
|
|
|
|
this.view.forEach(function (item) {
|
|
if (item.group !== group) {
|
|
group = item.group;
|
|
if (group) {
|
|
frag.appendChild(make('div', 'itflow-select-group', group));
|
|
}
|
|
}
|
|
var index = self.rows.length;
|
|
var selected = item.option.selected;
|
|
var node = make('div', 'itflow-select-option' + (selected ? ' is-selected' : '') + (item.none ? ' is-none' : '') + (item.disabled ? ' is-disabled' : ''));
|
|
node.id = self.id + '-o' + index;
|
|
node.setAttribute('role', 'option');
|
|
node.setAttribute('data-row', index);
|
|
node.setAttribute('aria-selected', selected ? 'true' : 'false');
|
|
if (item.disabled) {
|
|
node.setAttribute('aria-disabled', 'true');
|
|
}
|
|
if (self.multiple) {
|
|
var box = make('span', 'itflow-select-checkbox');
|
|
box.appendChild(make('i', 'fas fa-check'));
|
|
node.appendChild(box);
|
|
}
|
|
var visual = lead(item);
|
|
if (visual) {
|
|
node.appendChild(visual);
|
|
}
|
|
var text = make('span', 'itflow-select-text');
|
|
var label = make('span', 'itflow-select-label');
|
|
highlight(label, item.label, self.terms);
|
|
text.appendChild(label);
|
|
if (item.description) {
|
|
var description = make('span', 'itflow-select-description');
|
|
highlight(description, item.description, self.terms);
|
|
text.appendChild(description);
|
|
}
|
|
node.appendChild(text);
|
|
if (!self.multiple) {
|
|
node.appendChild(make('i', 'fas fa-check itflow-select-tick'));
|
|
}
|
|
frag.appendChild(node);
|
|
self.rows.push({ node: node, option: item.option, disabled: item.disabled, item: item });
|
|
});
|
|
|
|
if (this.creatable) {
|
|
var index = this.rows.length;
|
|
var create = make('div', 'itflow-select-option itflow-select-create');
|
|
create.id = this.id + '-o' + index;
|
|
create.setAttribute('role', 'option');
|
|
create.setAttribute('data-row', index);
|
|
create.setAttribute('aria-selected', 'false');
|
|
var plus = make('span', 'itflow-select-icon');
|
|
plus.appendChild(make('i', 'fas fa-plus'));
|
|
create.appendChild(plus);
|
|
var createText = make('span', 'itflow-select-text');
|
|
createText.appendChild(make('span', 'itflow-select-label', 'Add "' + this.creatable + '"'));
|
|
create.appendChild(createText);
|
|
frag.appendChild(create);
|
|
this.rows.push({ node: create, create: this.creatable });
|
|
}
|
|
|
|
if (!this.rows.length) {
|
|
frag.appendChild(make('div', 'itflow-select-empty', this.query.trim() ? 'No matches' : 'Nothing to choose from'));
|
|
} else if (this.total > this.view.length) {
|
|
frag.appendChild(make('div', 'itflow-select-more', 'Showing ' + this.view.length + ' of ' + this.total.toLocaleString() + ' - type to narrow it down'));
|
|
}
|
|
|
|
list.appendChild(frag);
|
|
|
|
var active = -1;
|
|
if (before) {
|
|
active = this.rowOf(before);
|
|
}
|
|
if (active === -1 && !this.terms.length && !this.multiple) {
|
|
active = this.rowOf(this.select.selectedOptions[0]);
|
|
}
|
|
if (active === -1) {
|
|
active = this.step(-1, 1);
|
|
}
|
|
if (keep) {
|
|
list.scrollTop = scroll;
|
|
}
|
|
this.setActive(active, false);
|
|
this.draw();
|
|
};
|
|
|
|
Picker.prototype.rowOf = function (option) {
|
|
for (var i = 0; option && i < this.rows.length; i++) {
|
|
if (this.rows[i].option === option && !this.rows[i].disabled) {
|
|
return i;
|
|
}
|
|
}
|
|
return -1;
|
|
};
|
|
|
|
/* The next pickable row from `from` in direction `dir`, or -1. */
|
|
Picker.prototype.step = function (from, dir) {
|
|
for (var i = from + dir; i >= 0 && i < this.rows.length; i += dir) {
|
|
if (!this.rows[i].disabled) {
|
|
return i;
|
|
}
|
|
}
|
|
return -1;
|
|
};
|
|
|
|
Picker.prototype.setActive = function (index, scroll) {
|
|
var old = this.rows[this.active];
|
|
if (old) {
|
|
old.node.classList.remove('is-active');
|
|
}
|
|
this.active = index;
|
|
var row = this.rows[index];
|
|
var owner = this.searching ? this.input : this.control;
|
|
if (!row) {
|
|
owner.removeAttribute('aria-activedescendant');
|
|
return;
|
|
}
|
|
row.node.classList.add('is-active');
|
|
owner.setAttribute('aria-activedescendant', row.node.id);
|
|
if (scroll) {
|
|
row.node.scrollIntoView({ block: 'nearest' });
|
|
}
|
|
};
|
|
|
|
Picker.prototype.scrollToActive = function () {
|
|
var row = this.rows[this.active];
|
|
if (row) {
|
|
row.node.scrollIntoView({ block: 'nearest' });
|
|
}
|
|
};
|
|
|
|
Picker.prototype.move = function (dir, count) {
|
|
var index = this.active;
|
|
for (var n = 0; n < (count || 1); n++) {
|
|
var next = this.step(index, dir);
|
|
if (next === -1) {
|
|
break;
|
|
}
|
|
index = next;
|
|
}
|
|
if (index === -1) {
|
|
index = this.step(-1, 1);
|
|
}
|
|
this.setActive(index, true);
|
|
};
|
|
|
|
/* ---------- choosing ---------- */
|
|
|
|
Picker.prototype.pick = function (index) {
|
|
var row = this.rows[index];
|
|
if (!row || row.disabled) {
|
|
return;
|
|
}
|
|
if (row.create) {
|
|
this.add(row.create, true);
|
|
return;
|
|
}
|
|
if (this.multiple) {
|
|
row.option.selected = !row.option.selected;
|
|
this.dirty = true;
|
|
this.setActive(index, false);
|
|
this.filter(true);
|
|
return;
|
|
}
|
|
if (!row.option.selected) {
|
|
row.option.selected = true;
|
|
this.dirty = true;
|
|
}
|
|
this.close(false, true);
|
|
};
|
|
|
|
/* A typed value for a data-tags field: the matching option, or a new one. */
|
|
Picker.prototype.add = function (text, fromRow) {
|
|
var select = this.select;
|
|
var match = null;
|
|
for (var i = 0; i < select.options.length; i++) {
|
|
if (fold(describe(select.options[i], select).label) === fold(text) && select.options[i].value !== '') {
|
|
match = select.options[i];
|
|
break;
|
|
}
|
|
}
|
|
if (!match) {
|
|
match = new Option(text, text);
|
|
select.appendChild(match);
|
|
}
|
|
if (!match.selected) {
|
|
match.selected = true;
|
|
this.dirty = true;
|
|
}
|
|
this.query = '';
|
|
this.input.value = '';
|
|
if (fromRow && !this.multiple) {
|
|
this.close(false, true);
|
|
} else if (fromRow) {
|
|
this.filter(true);
|
|
}
|
|
};
|
|
|
|
Picker.prototype.unpick = function (value) {
|
|
var options = this.select.options;
|
|
for (var i = 0; i < options.length; i++) {
|
|
if (options[i].value === value && options[i].selected) {
|
|
options[i].selected = false;
|
|
break;
|
|
}
|
|
}
|
|
if (this.isOpen) {
|
|
this.dirty = true;
|
|
this.filter(true);
|
|
} else {
|
|
this.emit();
|
|
}
|
|
};
|
|
|
|
Picker.prototype.clear = function () {
|
|
var select = this.select;
|
|
var changed = false;
|
|
if (this.multiple) {
|
|
Array.prototype.forEach.call(select.options, function (option) {
|
|
if (option.selected) {
|
|
option.selected = false;
|
|
changed = true;
|
|
}
|
|
});
|
|
} else {
|
|
var none = this.noneOption();
|
|
if (none && !none.selected) {
|
|
none.selected = true;
|
|
changed = true;
|
|
}
|
|
}
|
|
if (!changed) {
|
|
return;
|
|
}
|
|
if (this.isOpen) {
|
|
this.dirty = true;
|
|
this.filter(true);
|
|
} else {
|
|
this.emit();
|
|
}
|
|
};
|
|
|
|
/* Choose by value from code - fires change like a real pick. */
|
|
Picker.prototype.setValue = function (value) {
|
|
var values = Array.isArray(value) ? value.map(String) : [String(value)];
|
|
Array.prototype.forEach.call(this.select.options, function (option) {
|
|
option.selected = values.indexOf(option.value) !== -1;
|
|
});
|
|
this.emit();
|
|
};
|
|
|
|
/* With no search box, typing jumps to the next option starting with it. */
|
|
Picker.prototype.typeAhead = function (key) {
|
|
var now = Date.now();
|
|
var again = now - (this.typedAt || 0) < 700;
|
|
this.typed = (again ? this.typed || '' : '') + fold(key);
|
|
this.typedAt = now;
|
|
|
|
var options = this.select.options;
|
|
var count = options.length;
|
|
var from = this.select.selectedIndex;
|
|
if (this.isOpen && this.rows[this.active] && this.rows[this.active].option) {
|
|
from = this.rows[this.active].option.index;
|
|
}
|
|
// One letter moves on to the next match; a longer run of letters may
|
|
// still match where we already are
|
|
var first = this.typed.length > 1 ? from : from + 1;
|
|
|
|
for (var n = 0; n < count; n++) {
|
|
var option = options[(Math.max(first, 0) + n) % count];
|
|
var item = describe(option, this.select);
|
|
if (item.disabled || item.value === '' || fold(item.label).indexOf(this.typed) !== 0) {
|
|
continue;
|
|
}
|
|
if (this.isOpen) {
|
|
this.setActive(this.rowOf(option), true);
|
|
} else if (!this.multiple && !option.selected) {
|
|
option.selected = true;
|
|
this.emit();
|
|
}
|
|
return;
|
|
}
|
|
};
|
|
|
|
Picker.prototype.key = function (e, inSearch) {
|
|
var key = e.key;
|
|
|
|
if (!this.isOpen) {
|
|
if (key === 'ArrowDown' || key === 'ArrowUp' || key === 'Enter' || key === ' ' || key === 'F4') {
|
|
e.preventDefault();
|
|
this.open();
|
|
} else if (key === 'Backspace' && this.multiple) {
|
|
var chosen = this.chosen();
|
|
if (chosen.length) {
|
|
e.preventDefault();
|
|
this.unpick(chosen[chosen.length - 1].value);
|
|
}
|
|
} else if ((key === 'Backspace' || key === 'Delete') && this.clearable()) {
|
|
e.preventDefault();
|
|
this.clear();
|
|
} else if (printable(e)) {
|
|
e.preventDefault();
|
|
if (this.hasSearch()) {
|
|
this.open(key);
|
|
} else {
|
|
this.typeAhead(key);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
switch (key) {
|
|
case 'ArrowDown':
|
|
e.preventDefault();
|
|
this.move(1);
|
|
break;
|
|
case 'ArrowUp':
|
|
e.preventDefault();
|
|
this.move(-1);
|
|
break;
|
|
case 'PageDown':
|
|
e.preventDefault();
|
|
this.move(1, 8);
|
|
break;
|
|
case 'PageUp':
|
|
e.preventDefault();
|
|
this.move(-1, 8);
|
|
break;
|
|
case 'Home':
|
|
case 'End':
|
|
if (!inSearch) {
|
|
e.preventDefault();
|
|
this.setActive(key === 'Home' ? this.step(-1, 1) : this.step(this.rows.length, -1), true);
|
|
}
|
|
break;
|
|
case 'Enter':
|
|
e.preventDefault();
|
|
this.pick(this.active);
|
|
break;
|
|
case ' ':
|
|
if (!inSearch) {
|
|
e.preventDefault();
|
|
this.pick(this.active);
|
|
}
|
|
break;
|
|
case 'Escape':
|
|
// Stop here, or a Bootstrap modal behind the picker closes too
|
|
e.preventDefault();
|
|
e.stopPropagation();
|
|
this.close(false, true);
|
|
break;
|
|
case 'Tab':
|
|
// Back to the field first, so Tab carries on from there
|
|
this.control.focus({ preventScroll: true });
|
|
this.close(true, false);
|
|
break;
|
|
default:
|
|
if (!inSearch && printable(e)) {
|
|
e.preventDefault();
|
|
if (this.searching) {
|
|
// Opened by touch, so the search box was not focused - it is now
|
|
this.input.focus({ preventScroll: true });
|
|
this.input.value += key;
|
|
this.query = this.input.value;
|
|
this.filter(false);
|
|
} else {
|
|
this.typeAhead(key);
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
/* ---------- wiring ---------- */
|
|
|
|
function init(select) {
|
|
if (!select || select.tagName !== 'SELECT') {
|
|
return null;
|
|
}
|
|
if (select.itflowSelect) {
|
|
return select.itflowSelect;
|
|
}
|
|
// A copy of an enhanced field (cloned markup) comes with an empty
|
|
// shell around it - drop the shell and start again
|
|
var shell = select.parentNode;
|
|
if (shell && shell.classList && shell.classList.contains('itflow-select')) {
|
|
shell.parentNode.insertBefore(select, shell);
|
|
shell.remove();
|
|
select.classList.remove('itflow-select-native');
|
|
select.removeAttribute('aria-hidden');
|
|
select.removeAttribute('tabindex');
|
|
}
|
|
return new Picker(select);
|
|
}
|
|
|
|
function initAll(root) {
|
|
var scope = root && root.querySelectorAll ? root : document;
|
|
if (scope.matches && scope.matches('select.select2')) {
|
|
init(scope);
|
|
}
|
|
scope.querySelectorAll('select.select2').forEach(function (select) {
|
|
try {
|
|
init(select);
|
|
} catch (e) {
|
|
console.error('itflow select: could not enhance', select, e);
|
|
}
|
|
});
|
|
}
|
|
|
|
/*
|
|
* Picks made from code redraw by themselves. These are the browser's own
|
|
* setters with a nudge added - the value still lands exactly as before.
|
|
*/
|
|
function watch(proto, prop, owner) {
|
|
var native = Object.getOwnPropertyDescriptor(proto, prop);
|
|
if (!native || !native.set) {
|
|
return;
|
|
}
|
|
Object.defineProperty(proto, prop, {
|
|
configurable: true,
|
|
enumerable: native.enumerable,
|
|
get: native.get,
|
|
set: function (value) {
|
|
native.set.call(this, value);
|
|
var select = owner(this);
|
|
if (select && select.itflowSelect) {
|
|
select.itflowSelect.queue();
|
|
}
|
|
}
|
|
});
|
|
}
|
|
watch(HTMLSelectElement.prototype, 'value', function (select) { return select; });
|
|
watch(HTMLSelectElement.prototype, 'selectedIndex', function (select) { return select; });
|
|
watch(HTMLOptionElement.prototype, 'selected', selectOf);
|
|
|
|
// Outside click closes - and keeps what was typed into a data-tags field
|
|
document.addEventListener('mousedown', function (e) {
|
|
if (current && !current.wrap.contains(e.target) && !current.panel.contains(e.target)) {
|
|
current.close(true, false);
|
|
}
|
|
}, true);
|
|
document.addEventListener('touchstart', function (e) {
|
|
if (current && !current.wrap.contains(e.target) && !current.panel.contains(e.target)) {
|
|
current.close(true, false);
|
|
}
|
|
}, { capture: true, passive: true });
|
|
|
|
var placing = false;
|
|
function replace() {
|
|
if (!current || placing) {
|
|
return;
|
|
}
|
|
placing = true;
|
|
requestAnimationFrame(function () {
|
|
placing = false;
|
|
if (current) {
|
|
current.place();
|
|
}
|
|
});
|
|
}
|
|
window.addEventListener('resize', replace);
|
|
document.addEventListener('scroll', function (e) {
|
|
if (current && current.panel.contains(e.target)) {
|
|
return; // the list itself scrolling
|
|
}
|
|
replace();
|
|
}, true);
|
|
|
|
document.addEventListener('hide.bs.modal', function (e) {
|
|
if (current && e.target.contains(current.wrap)) {
|
|
current.close(false, false);
|
|
}
|
|
});
|
|
|
|
// <label for> lands on the hidden select; send it to the field instead
|
|
document.addEventListener('click', function (e) {
|
|
var label = e.target.closest && e.target.closest('label');
|
|
var control = label && label.control;
|
|
if (control && control.itflowSelect && !control.itflowSelect.isDisabled()) {
|
|
e.preventDefault();
|
|
control.itflowSelect.control.focus();
|
|
}
|
|
});
|
|
|
|
document.addEventListener('reset', function (e) {
|
|
setTimeout(function () {
|
|
e.target.querySelectorAll('select.itflow-select-native').forEach(function (select) {
|
|
if (select.itflowSelect) {
|
|
select.itflowSelect.queue();
|
|
}
|
|
});
|
|
});
|
|
}, true);
|
|
|
|
// Selects added later (ajax modals, rows added by script) enhance themselves
|
|
var pending = [];
|
|
new MutationObserver(function (records) {
|
|
records.forEach(function (record) {
|
|
record.addedNodes.forEach(function (node) {
|
|
if (node.nodeType === 1 && (node.matches('select.select2') || node.querySelector('select.select2'))) {
|
|
pending.push(node);
|
|
}
|
|
});
|
|
});
|
|
if (pending.length) {
|
|
var nodes = pending;
|
|
pending = [];
|
|
nodes.forEach(initAll);
|
|
}
|
|
}).observe(document.documentElement, { childList: true, subtree: true });
|
|
|
|
window.itflowSelect = init;
|
|
window.itflowSelectAll = initAll;
|
|
|
|
initAll(document);
|
|
})();
|