308 lines
15 KiB
JavaScript
308 lines
15 KiB
JavaScript
/*global SelectBox, gettext, ngettext, interpolate, quickElement, SelectFilter*/
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/*
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SelectFilter2 - Turns a multiple-select box into a filter interface.
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Requires core.js and SelectBox.js.
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*/
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'use strict';
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{
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window.SelectFilter = {
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init: function(field_id, field_name, is_stacked) {
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if (field_id.match(/__prefix__/)) {
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// Don't initialize on empty forms.
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return;
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}
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const from_box = document.getElementById(field_id);
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from_box.id += '_from'; // change its ID
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from_box.className = 'filtered';
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from_box.setAttribute('aria-labelledby', field_id + '_from_title');
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for (const p of from_box.parentNode.getElementsByTagName('p')) {
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if (p.classList.contains("info")) {
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// Remove <p class="info">, because it just gets in the way.
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from_box.parentNode.removeChild(p);
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} else if (p.classList.contains("help")) {
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// Move help text up to the top so it isn't below the select
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// boxes or wrapped off on the side to the right of the add
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// button:
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from_box.parentNode.insertBefore(p, from_box.parentNode.firstChild);
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}
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}
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// <div class="selector"> or <div class="selector stacked">
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const selector_div = quickElement('div', from_box.parentNode);
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// Make sure the selector div is at the beginning so that the
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// add link would be displayed to the right of the widget.
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from_box.parentNode.prepend(selector_div);
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selector_div.className = is_stacked ? 'selector stacked' : 'selector';
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// <div class="selector-available">
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const selector_available = quickElement('div', selector_div);
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selector_available.className = 'selector-available';
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const selector_available_title = quickElement('div', selector_available);
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selector_available_title.id = field_id + '_from_title';
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selector_available_title.className = 'selector-available-title';
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quickElement('label', selector_available_title, interpolate(gettext('Available %s') + ' ', [field_name]), 'for', field_id + '_from');
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quickElement(
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'p',
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selector_available_title,
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interpolate(gettext('Choose %s by selecting them and then select the "Choose" arrow button.'), [field_name]),
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'class', 'helptext'
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);
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const filter_p = quickElement('p', selector_available, '', 'id', field_id + '_filter');
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filter_p.className = 'selector-filter';
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const search_filter_label = quickElement('label', filter_p, '', 'for', field_id + '_input');
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quickElement(
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'span', search_filter_label, '',
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'class', 'help-tooltip search-label-icon',
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'aria-label', interpolate(gettext("Type into this box to filter down the list of available %s."), [field_name])
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);
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filter_p.appendChild(document.createTextNode(' '));
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const filter_input = quickElement('input', filter_p, '', 'type', 'text', 'placeholder', gettext("Filter"));
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filter_input.id = field_id + '_input';
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selector_available.appendChild(from_box);
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const choose_all = quickElement(
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'button',
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selector_available,
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interpolate(gettext('Choose all %s'), [field_name]),
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'id', field_id + '_add_all',
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'class', 'selector-chooseall'
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);
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// <ul class="selector-chooser">
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const selector_chooser = quickElement('ul', selector_div);
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selector_chooser.className = 'selector-chooser';
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const add_button = quickElement(
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'button',
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quickElement('li', selector_chooser),
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interpolate(gettext('Choose selected %s'), [field_name]),
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'id', field_id + '_add',
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'class', 'selector-add'
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);
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const remove_button = quickElement(
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'button',
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quickElement('li', selector_chooser),
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interpolate(gettext('Remove selected %s'), [field_name]),
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'id', field_id + '_remove',
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'class', 'selector-remove'
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);
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// <div class="selector-chosen">
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const selector_chosen = quickElement('div', selector_div, '', 'id', field_id + '_selector_chosen');
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selector_chosen.className = 'selector-chosen';
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const selector_chosen_title = quickElement('div', selector_chosen);
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selector_chosen_title.className = 'selector-chosen-title';
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selector_chosen_title.id = field_id + '_to_title';
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quickElement('label', selector_chosen_title, interpolate(gettext('Chosen %s') + ' ', [field_name]), 'for', field_id + '_to');
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quickElement(
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'p',
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selector_chosen_title,
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interpolate(gettext('Remove %s by selecting them and then select the "Remove" arrow button.'), [field_name]),
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'class', 'helptext'
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);
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const filter_selected_p = quickElement('p', selector_chosen, '', 'id', field_id + '_filter_selected');
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filter_selected_p.className = 'selector-filter';
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const search_filter_selected_label = quickElement('label', filter_selected_p, '', 'for', field_id + '_selected_input');
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quickElement(
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'span', search_filter_selected_label, '',
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'class', 'help-tooltip search-label-icon',
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'aria-label', interpolate(gettext("Type into this box to filter down the list of selected %s."), [field_name])
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);
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filter_selected_p.appendChild(document.createTextNode(' '));
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const filter_selected_input = quickElement('input', filter_selected_p, '', 'type', 'text', 'placeholder', gettext("Filter"));
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filter_selected_input.id = field_id + '_selected_input';
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quickElement(
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'select',
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selector_chosen,
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'',
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'id', field_id + '_to',
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'multiple', '',
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'size', from_box.size,
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'name', from_box.name,
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'aria-labelledby', field_id + '_to_title',
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'class', 'filtered'
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);
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const warning_footer = quickElement('div', selector_chosen, '', 'class', 'list-footer-display');
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quickElement('span', warning_footer, '', 'id', field_id + '_list-footer-display-text');
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quickElement('span', warning_footer, ' ' + gettext('(click to clear)'), 'class', 'list-footer-display__clear');
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const clear_all = quickElement(
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'button',
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selector_chosen,
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interpolate(gettext('Remove all %s'), [field_name]),
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'id', field_id + '_remove_all',
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'class', 'selector-clearall'
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);
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from_box.name = from_box.name + '_old';
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// Set up the JavaScript event handlers for the select box filter interface
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const move_selection = function(e, elem, move_func, from, to) {
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if (!elem.hasAttribute('disabled')) {
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move_func(from, to);
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SelectFilter.refresh_icons(field_id);
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SelectFilter.refresh_filtered_selects(field_id);
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SelectFilter.refresh_filtered_warning(field_id);
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}
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e.preventDefault();
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};
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choose_all.addEventListener('click', function(e) {
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move_selection(e, this, SelectBox.move_all, field_id + '_from', field_id + '_to');
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});
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add_button.addEventListener('click', function(e) {
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move_selection(e, this, SelectBox.move, field_id + '_from', field_id + '_to');
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});
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remove_button.addEventListener('click', function(e) {
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move_selection(e, this, SelectBox.move, field_id + '_to', field_id + '_from');
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});
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clear_all.addEventListener('click', function(e) {
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move_selection(e, this, SelectBox.move_all, field_id + '_to', field_id + '_from');
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});
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warning_footer.addEventListener('click', function(e) {
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filter_selected_input.value = '';
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SelectBox.filter(field_id + '_to', '');
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SelectFilter.refresh_filtered_warning(field_id);
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SelectFilter.refresh_icons(field_id);
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});
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filter_input.addEventListener('keypress', function(e) {
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SelectFilter.filter_key_press(e, field_id, '_from', '_to');
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});
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filter_input.addEventListener('keyup', function(e) {
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SelectFilter.filter_key_up(e, field_id, '_from');
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});
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filter_input.addEventListener('keydown', function(e) {
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SelectFilter.filter_key_down(e, field_id, '_from', '_to');
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});
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filter_selected_input.addEventListener('keypress', function(e) {
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SelectFilter.filter_key_press(e, field_id, '_to', '_from');
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});
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filter_selected_input.addEventListener('keyup', function(e) {
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SelectFilter.filter_key_up(e, field_id, '_to', '_selected_input');
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});
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filter_selected_input.addEventListener('keydown', function(e) {
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SelectFilter.filter_key_down(e, field_id, '_to', '_from');
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});
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selector_div.addEventListener('change', function(e) {
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if (e.target.tagName === 'SELECT') {
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SelectFilter.refresh_icons(field_id);
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}
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});
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selector_div.addEventListener('dblclick', function(e) {
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if (e.target.tagName === 'OPTION') {
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if (e.target.closest('select').id === field_id + '_to') {
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SelectBox.move(field_id + '_to', field_id + '_from');
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} else {
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SelectBox.move(field_id + '_from', field_id + '_to');
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}
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SelectFilter.refresh_icons(field_id);
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}
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});
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from_box.closest('form').addEventListener('submit', function() {
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SelectBox.filter(field_id + '_to', '');
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SelectBox.select_all(field_id + '_to');
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});
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SelectBox.init(field_id + '_from');
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SelectBox.init(field_id + '_to');
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// Move selected from_box options to to_box
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SelectBox.move(field_id + '_from', field_id + '_to');
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// Initial icon refresh
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SelectFilter.refresh_icons(field_id);
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},
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any_selected: function(field) {
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// Temporarily add the required attribute and check validity.
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field.required = true;
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const any_selected = field.checkValidity();
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field.required = false;
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return any_selected;
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},
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refresh_filtered_warning: function(field_id) {
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const count = SelectBox.get_hidden_node_count(field_id + '_to');
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const selector = document.getElementById(field_id + '_selector_chosen');
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const warning = document.getElementById(field_id + '_list-footer-display-text');
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selector.className = selector.className.replace('selector-chosen--with-filtered', '');
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warning.textContent = interpolate(ngettext(
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'%s selected option not visible',
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'%s selected options not visible',
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count
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), [count]);
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if(count > 0) {
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selector.className += ' selector-chosen--with-filtered';
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}
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},
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refresh_filtered_selects: function(field_id) {
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SelectBox.filter(field_id + '_from', document.getElementById(field_id + "_input").value);
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SelectBox.filter(field_id + '_to', document.getElementById(field_id + "_selected_input").value);
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},
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refresh_icons: function(field_id) {
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const from = document.getElementById(field_id + '_from');
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const to = document.getElementById(field_id + '_to');
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// Disabled if no items are selected.
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document.getElementById(field_id + '_add').disabled = !SelectFilter.any_selected(from);
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document.getElementById(field_id + '_remove').disabled = !SelectFilter.any_selected(to);
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// Disabled if the corresponding box is empty.
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document.getElementById(field_id + '_add_all').disabled = !from.querySelector('option');
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document.getElementById(field_id + '_remove_all').disabled = !to.querySelector('option');
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},
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filter_key_press: function(event, field_id, source, target) {
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const source_box = document.getElementById(field_id + source);
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// don't submit form if user pressed Enter
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if ((event.which && event.which === 13) || (event.keyCode && event.keyCode === 13)) {
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source_box.selectedIndex = 0;
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SelectBox.move(field_id + source, field_id + target);
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source_box.selectedIndex = 0;
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event.preventDefault();
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}
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},
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filter_key_up: function(event, field_id, source, filter_input) {
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const input = filter_input || '_input';
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const source_box = document.getElementById(field_id + source);
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const temp = source_box.selectedIndex;
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SelectBox.filter(field_id + source, document.getElementById(field_id + input).value);
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source_box.selectedIndex = temp;
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SelectFilter.refresh_filtered_warning(field_id);
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SelectFilter.refresh_icons(field_id);
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},
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filter_key_down: function(event, field_id, source, target) {
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const source_box = document.getElementById(field_id + source);
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// right key (39) or left key (37)
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const direction = source === '_from' ? 39 : 37;
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// right arrow -- move across
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if ((event.which && event.which === direction) || (event.keyCode && event.keyCode === direction)) {
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const old_index = source_box.selectedIndex;
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SelectBox.move(field_id + source, field_id + target);
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SelectFilter.refresh_filtered_selects(field_id);
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SelectFilter.refresh_filtered_warning(field_id);
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source_box.selectedIndex = (old_index === source_box.length) ? source_box.length - 1 : old_index;
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return;
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}
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// down arrow -- wrap around
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if ((event.which && event.which === 40) || (event.keyCode && event.keyCode === 40)) {
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source_box.selectedIndex = (source_box.length === source_box.selectedIndex + 1) ? 0 : source_box.selectedIndex + 1;
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}
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// up arrow -- wrap around
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if ((event.which && event.which === 38) || (event.keyCode && event.keyCode === 38)) {
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source_box.selectedIndex = (source_box.selectedIndex === 0) ? source_box.length - 1 : source_box.selectedIndex - 1;
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}
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}
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};
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window.addEventListener('load', function(e) {
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document.querySelectorAll('select.selectfilter, select.selectfilterstacked').forEach(function(el) {
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const data = el.dataset;
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SelectFilter.init(el.id, data.fieldName, parseInt(data.isStacked, 10));
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});
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});
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}
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