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/*global SelectBox, gettext, 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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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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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 title_available = quickElement('h2', selector_available, interpolate(gettext('Available %s') + ' ', [field_name]));
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quickElement(
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'span', title_available, '',
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'class', 'help help-tooltip help-icon',
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'title', interpolate(
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gettext(
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'This is the list of available %s. You may choose some by ' +
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'selecting them in the box below and then clicking the ' +
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'"Choose" arrow between the two boxes.'
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),
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[field_name]
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)
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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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'title', 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('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');
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choose_all.className = 'selector-chooseall';
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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_link = quickElement('a', quickElement('li', selector_chooser), gettext('Choose'), 'title', gettext('Choose'), 'href', '#', 'id', field_id + '_add_link');
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add_link.className = 'selector-add';
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const remove_link = quickElement('a', quickElement('li', selector_chooser), gettext('Remove'), 'title', gettext('Remove'), 'href', '#', 'id', field_id + '_remove_link');
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remove_link.className = 'selector-remove';
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// <div class="selector-chosen">
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const selector_chosen = quickElement('div', selector_div);
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selector_chosen.className = 'selector-chosen';
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const title_chosen = quickElement('h2', selector_chosen, interpolate(gettext('Chosen %s') + ' ', [field_name]));
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quickElement(
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'span', title_chosen, '',
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'class', 'help help-tooltip help-icon',
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'title', interpolate(
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gettext(
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'This is the list of chosen %s. You may remove some by ' +
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'selecting them in the box below and then clicking the ' +
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'"Remove" arrow between the two boxes.'
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),
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[field_name]
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)
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);
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const to_box = quickElement('select', selector_chosen, '', 'id', field_id + '_to', 'multiple', '', 'size', from_box.size, 'name', from_box.name);
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to_box.className = 'filtered';
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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');
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clear_all.className = 'selector-clearall';
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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.classList.contains('active')) {
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move_func(from, to);
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SelectFilter.refresh_icons(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_link.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_link.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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filter_input.addEventListener('keypress', function(e) {
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SelectFilter.filter_key_press(e, field_id);
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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);
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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);
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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.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_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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// Active if at least one item is selected
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document.getElementById(field_id + '_add_link').classList.toggle('active', SelectFilter.any_selected(from));
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document.getElementById(field_id + '_remove_link').classList.toggle('active', SelectFilter.any_selected(to));
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// Active if the corresponding box isn't empty
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document.getElementById(field_id + '_add_all_link').classList.toggle('active', from.querySelector('option'));
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document.getElementById(field_id + '_remove_all_link').classList.toggle('active', to.querySelector('option'));
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},
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filter_key_press: function(event, field_id) {
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const from = document.getElementById(field_id + '_from');
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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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from.selectedIndex = 0;
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SelectBox.move(field_id + '_from', field_id + '_to');
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from.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) {
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const from = document.getElementById(field_id + '_from');
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const temp = from.selectedIndex;
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SelectBox.filter(field_id + '_from', document.getElementById(field_id + '_input').value);
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from.selectedIndex = temp;
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},
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filter_key_down: function(event, field_id) {
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const from = document.getElementById(field_id + '_from');
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// right arrow -- move across
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if ((event.which && event.which === 39) || (event.keyCode && event.keyCode === 39)) {
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const old_index = from.selectedIndex;
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SelectBox.move(field_id + '_from', field_id + '_to');
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from.selectedIndex = (old_index === from.length) ? from.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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from.selectedIndex = (from.length === from.selectedIndex + 1) ? 0 : from.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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from.selectedIndex = (from.selectedIndex === 0) ? from.length - 1 : from.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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