/*global SelectBox, gettext, interpolate, quickElement, SelectFilter*/ /* SelectFilter2 - Turns a multiple-select box into a filter interface. Requires core.js and SelectBox.js. */ 'use strict'; { window.SelectFilter = { init: function(field_id, field_name, is_stacked) { if (field_id.match(/__prefix__/)) { // Don't initialize on empty forms. return; } const from_box = document.getElementById(field_id); from_box.id += '_from'; // change its ID from_box.className = 'filtered'; for (const p of from_box.parentNode.getElementsByTagName('p')) { if (p.classList.contains("info")) { // Remove

, because it just gets in the way. from_box.parentNode.removeChild(p); } else if (p.classList.contains("help")) { // Move help text up to the top so it isn't below the select // boxes or wrapped off on the side to the right of the add // button: from_box.parentNode.insertBefore(p, from_box.parentNode.firstChild); } } //

or
const selector_div = quickElement('div', from_box.parentNode); selector_div.className = is_stacked ? 'selector stacked' : 'selector'; //
const selector_available = quickElement('div', selector_div); selector_available.className = 'selector-available'; const title_available = quickElement('h2', selector_available, interpolate(gettext('Available %s') + ' ', [field_name])); quickElement( 'span', title_available, '', 'class', 'help help-tooltip help-icon', 'title', interpolate( gettext( 'This is the list of available %s. You may choose some by ' + 'selecting them in the box below and then clicking the ' + '"Choose" arrow between the two boxes.' ), [field_name] ) ); const filter_p = quickElement('p', selector_available, '', 'id', field_id + '_filter'); filter_p.className = 'selector-filter'; const search_filter_label = quickElement('label', filter_p, '', 'for', field_id + '_input'); quickElement( 'span', search_filter_label, '', 'class', 'help-tooltip search-label-icon', 'title', interpolate(gettext("Type into this box to filter down the list of available %s."), [field_name]) ); filter_p.appendChild(document.createTextNode(' ')); const filter_input = quickElement('input', filter_p, '', 'type', 'text', 'placeholder', gettext("Filter")); filter_input.id = field_id + '_input'; selector_available.appendChild(from_box); const choose_all = quickElement('a', selector_available, gettext('Choose all'), 'title', interpolate(gettext('Click to choose all %s at once.'), [field_name]), 'href', '#', 'id', field_id + '_add_all_link'); choose_all.className = 'selector-chooseall'; //
    const selector_chooser = quickElement('ul', selector_div); selector_chooser.className = 'selector-chooser'; const add_link = quickElement('a', quickElement('li', selector_chooser), gettext('Choose'), 'title', gettext('Choose'), 'href', '#', 'id', field_id + '_add_link'); add_link.className = 'selector-add'; const remove_link = quickElement('a', quickElement('li', selector_chooser), gettext('Remove'), 'title', gettext('Remove'), 'href', '#', 'id', field_id + '_remove_link'); remove_link.className = 'selector-remove'; //
    const selector_chosen = quickElement('div', selector_div, '', 'id', field_id + '_selector_chosen'); selector_chosen.className = 'selector-chosen'; const title_chosen = quickElement('h2', selector_chosen, interpolate(gettext('Chosen %s') + ' ', [field_name])); quickElement( 'span', title_chosen, '', 'class', 'help help-tooltip help-icon', 'title', interpolate( gettext( 'This is the list of chosen %s. You may remove some by ' + 'selecting them in the box below and then clicking the ' + '"Remove" arrow between the two boxes.' ), [field_name] ) ); const filter_selected_p = quickElement('p', selector_chosen, '', 'id', field_id + '_filter_selected'); filter_selected_p.className = 'selector-filter'; const search_filter_selected_label = quickElement('label', filter_selected_p, '', 'for', field_id + '_selected_input'); quickElement( 'span', search_filter_selected_label, '', 'class', 'help-tooltip search-label-icon', 'title', interpolate(gettext("Type into this box to filter down the list of selected %s."), [field_name]) ); filter_selected_p.appendChild(document.createTextNode(' ')); const filter_selected_input = quickElement('input', filter_selected_p, '', 'type', 'text', 'placeholder', gettext("Filter")); filter_selected_input.id = field_id + '_selected_input'; const to_box = quickElement('select', selector_chosen, '', 'id', field_id + '_to', 'multiple', '', 'size', from_box.size, 'name', from_box.name); to_box.className = 'filtered'; const warning_footer = quickElement('div', selector_chosen, '', 'class', 'list-footer-display'); quickElement('span', warning_footer, '', 'id', field_id + '_list-footer-display-text'); quickElement('span', warning_footer, ' (click to clear)', 'class', 'list-footer-display__clear'); const clear_all = quickElement('a', selector_chosen, gettext('Remove all'), 'title', interpolate(gettext('Click to remove all chosen %s at once.'), [field_name]), 'href', '#', 'id', field_id + '_remove_all_link'); clear_all.className = 'selector-clearall'; from_box.name = from_box.name + '_old'; // Set up the JavaScript event handlers for the select box filter interface const move_selection = function(e, elem, move_func, from, to) { if (elem.classList.contains('active')) { move_func(from, to); SelectFilter.refresh_icons(field_id); SelectFilter.refresh_filtered_selects(field_id); SelectFilter.refresh_filtered_warning(field_id); } e.preventDefault(); }; choose_all.addEventListener('click', function(e) { move_selection(e, this, SelectBox.move_all, field_id + '_from', field_id + '_to'); }); add_link.addEventListener('click', function(e) { move_selection(e, this, SelectBox.move, field_id + '_from', field_id + '_to'); }); remove_link.addEventListener('click', function(e) { move_selection(e, this, SelectBox.move, field_id + '_to', field_id + '_from'); }); clear_all.addEventListener('click', function(e) { move_selection(e, this, SelectBox.move_all, field_id + '_to', field_id + '_from'); }); warning_footer.addEventListener('click', function(e) { filter_selected_input.value = ''; SelectBox.filter(field_id + '_to', ''); SelectFilter.refresh_filtered_warning(field_id); SelectFilter.refresh_icons(field_id); }); filter_input.addEventListener('keypress', function(e) { SelectFilter.filter_key_press(e, field_id, '_from', '_to'); }); filter_input.addEventListener('keyup', function(e) { SelectFilter.filter_key_up(e, field_id, '_from'); }); filter_input.addEventListener('keydown', function(e) { SelectFilter.filter_key_down(e, field_id, '_from', '_to'); }); filter_selected_input.addEventListener('keypress', function(e) { SelectFilter.filter_key_press(e, field_id, '_to', '_from'); }); filter_selected_input.addEventListener('keyup', function(e) { SelectFilter.filter_key_up(e, field_id, '_to', '_selected_input'); }); filter_selected_input.addEventListener('keydown', function(e) { SelectFilter.filter_key_down(e, field_id, '_to', '_from'); }); selector_div.addEventListener('change', function(e) { if (e.target.tagName === 'SELECT') { SelectFilter.refresh_icons(field_id); } }); selector_div.addEventListener('dblclick', function(e) { if (e.target.tagName === 'OPTION') { if (e.target.closest('select').id === field_id + '_to') { SelectBox.move(field_id + '_to', field_id + '_from'); } else { SelectBox.move(field_id + '_from', field_id + '_to'); } SelectFilter.refresh_icons(field_id); } }); from_box.closest('form').addEventListener('submit', function() { SelectBox.filter(field_id + '_to', ''); SelectBox.select_all(field_id + '_to'); }); SelectBox.init(field_id + '_from'); SelectBox.init(field_id + '_to'); // Move selected from_box options to to_box SelectBox.move(field_id + '_from', field_id + '_to'); // Initial icon refresh SelectFilter.refresh_icons(field_id); }, any_selected: function(field) { // Temporarily add the required attribute and check validity. field.required = true; const any_selected = field.checkValidity(); field.required = false; return any_selected; }, refresh_filtered_warning: function(field_id) { const count = SelectBox.get_hidden_node_count(field_id + '_to'); const selector = document.getElementById(field_id + '_selector_chosen'); const warning = document.getElementById(field_id + '_list-footer-display-text'); selector.className = selector.className.replace('selector-chosen--with-filtered', ''); warning.textContent = interpolate(ngettext( '%s selected option not visible', '%s selected options not visible', count ), [count]); if(count > 0) { selector.className += ' selector-chosen--with-filtered'; } }, refresh_filtered_selects: function(field_id) { SelectBox.filter(field_id + '_from', document.getElementById(field_id + "_input").value); SelectBox.filter(field_id + '_to', document.getElementById(field_id + "_selected_input").value); }, refresh_icons: function(field_id) { const from = document.getElementById(field_id + '_from'); const to = document.getElementById(field_id + '_to'); // Active if at least one item is selected document.getElementById(field_id + '_add_link').classList.toggle('active', SelectFilter.any_selected(from)); document.getElementById(field_id + '_remove_link').classList.toggle('active', SelectFilter.any_selected(to)); // Active if the corresponding box isn't empty document.getElementById(field_id + '_add_all_link').classList.toggle('active', from.querySelector('option')); document.getElementById(field_id + '_remove_all_link').classList.toggle('active', to.querySelector('option')); SelectFilter.refresh_filtered_warning(field_id); }, filter_key_press: function(event, field_id, source, target) { const source_box = document.getElementById(field_id + source); // don't submit form if user pressed Enter if ((event.which && event.which === 13) || (event.keyCode && event.keyCode === 13)) { source_box.selectedIndex = 0; SelectBox.move(field_id + source, field_id + target); source_box.selectedIndex = 0; event.preventDefault(); } }, filter_key_up: function(event, field_id, source, filter_input) { const input = filter_input || '_input'; const source_box = document.getElementById(field_id + source); const temp = source_box.selectedIndex; SelectBox.filter(field_id + source, document.getElementById(field_id + input).value); source_box.selectedIndex = temp; SelectFilter.refresh_filtered_warning(field_id); SelectFilter.refresh_icons(field_id); }, filter_key_down: function(event, field_id, source, target) { const source_box = document.getElementById(field_id + source); // right key (39) or left key (37) const direction = source === '_from' ? 39 : 37; // right arrow -- move across if ((event.which && event.which === direction) || (event.keyCode && event.keyCode === direction)) { const old_index = source_box.selectedIndex; SelectBox.move(field_id + source, field_id + target); SelectFilter.refresh_filtered_selects(field_id); SelectFilter.refresh_filtered_warning(field_id); source_box.selectedIndex = (old_index === source_box.length) ? source_box.length - 1 : old_index; return; } // down arrow -- wrap around if ((event.which && event.which === 40) || (event.keyCode && event.keyCode === 40)) { source_box.selectedIndex = (source_box.length === source_box.selectedIndex + 1) ? 0 : source_box.selectedIndex + 1; } // up arrow -- wrap around if ((event.which && event.which === 38) || (event.keyCode && event.keyCode === 38)) { source_box.selectedIndex = (source_box.selectedIndex === 0) ? source_box.length - 1 : source_box.selectedIndex - 1; } } }; window.addEventListener('load', function(e) { document.querySelectorAll('select.selectfilter, select.selectfilterstacked').forEach(function(el) { const data = el.dataset; SelectFilter.init(el.id, data.fieldName, parseInt(data.isStacked, 10)); }); }); }