bgneal@1: /*
bgneal@1: SelectFilter2 - Turns a multiple-select box into a filter interface.
bgneal@1: 
bgneal@1: Different than SelectFilter because this is coupled to the admin framework.
bgneal@1: 
bgneal@1: Requires core.js, SelectBox.js and addevent.js.
bgneal@1: */
bgneal@1: 
bgneal@1: function findForm(node) {
bgneal@1:     // returns the node of the form containing the given node
bgneal@1:     if (node.tagName.toLowerCase() != 'form') {
bgneal@1:         return findForm(node.parentNode);
bgneal@1:     }
bgneal@1:     return node;
bgneal@1: }
bgneal@1: 
bgneal@1: var SelectFilter = {
bgneal@1:     init: function(field_id, field_name, is_stacked, admin_media_prefix) {
bgneal@1:         var from_box = document.getElementById(field_id);
bgneal@1:         from_box.id += '_from'; // change its ID
bgneal@1:         from_box.className = 'filtered';
bgneal@1: 
bgneal@1:         // Remove <p class="info">, because it just gets in the way.
bgneal@1:         var ps = from_box.parentNode.getElementsByTagName('p');
bgneal@1:         for (var i=0; i<ps.length; i++) {
bgneal@1:             from_box.parentNode.removeChild(ps[i]);
bgneal@1:         }
bgneal@1: 
bgneal@1:         // <div class="selector"> or <div class="selector stacked">
bgneal@1:         var selector_div = quickElement('div', from_box.parentNode);
bgneal@1:         selector_div.className = is_stacked ? 'selector stacked' : 'selector';
bgneal@1: 
bgneal@1:         // <div class="selector-available">
bgneal@1:         var selector_available = quickElement('div', selector_div, '');
bgneal@1:         selector_available.className = 'selector-available';
bgneal@1:         quickElement('h2', selector_available, interpolate(gettext('Available %s'), [field_name]));
bgneal@1:         var filter_p = quickElement('p', selector_available, '');
bgneal@1:         filter_p.className = 'selector-filter';
bgneal@1:         quickElement('img', filter_p, '', 'src', admin_media_prefix + 'img/admin/selector-search.gif');
bgneal@1:         filter_p.appendChild(document.createTextNode(' '));
bgneal@1:         var filter_input = quickElement('input', filter_p, '', 'type', 'text');
bgneal@1:         filter_input.id = field_id + '_input';
bgneal@1:         selector_available.appendChild(from_box);
bgneal@1:         var choose_all = quickElement('a', selector_available, gettext('Choose all'), 'href', 'javascript: (function(){ SelectBox.move_all("' + field_id + '_from", "' + field_id + '_to"); })()');
bgneal@1:         choose_all.className = 'selector-chooseall';
bgneal@1: 
bgneal@1:         // <ul class="selector-chooser">
bgneal@1:         var selector_chooser = quickElement('ul', selector_div, '');
bgneal@1:         selector_chooser.className = 'selector-chooser';
bgneal@1:         var add_link = quickElement('a', quickElement('li', selector_chooser, ''), gettext('Add'), 'href', 'javascript: (function(){ SelectBox.move("' + field_id + '_from","' + field_id + '_to");})()');
bgneal@1:         add_link.className = 'selector-add';
bgneal@1:         var remove_link = quickElement('a', quickElement('li', selector_chooser, ''), gettext('Remove'), 'href', 'javascript: (function(){ SelectBox.move("' + field_id + '_to","' + field_id + '_from");})()');
bgneal@1:         remove_link.className = 'selector-remove';
bgneal@1: 
bgneal@1:         // <div class="selector-chosen">
bgneal@1:         var selector_chosen = quickElement('div', selector_div, '');
bgneal@1:         selector_chosen.className = 'selector-chosen';
bgneal@1:         quickElement('h2', selector_chosen, interpolate(gettext('Chosen %s'), [field_name]));
bgneal@1:         var selector_filter = quickElement('p', selector_chosen, gettext('Select your choice(s) and click '));
bgneal@1:         selector_filter.className = 'selector-filter';
bgneal@1:         quickElement('img', selector_filter, '', 'src', admin_media_prefix + (is_stacked ? 'img/admin/selector_stacked-add.gif':'img/admin/selector-add.gif'), 'alt', 'Add');
bgneal@1:         var to_box = quickElement('select', selector_chosen, '', 'id', field_id + '_to', 'multiple', 'multiple', 'size', from_box.size, 'name', from_box.getAttribute('name'));
bgneal@1:         to_box.className = 'filtered';
bgneal@1:         var clear_all = quickElement('a', selector_chosen, gettext('Clear all'), 'href', 'javascript: (function() { SelectBox.move_all("' + field_id + '_to", "' + field_id + '_from");})()');
bgneal@1:         clear_all.className = 'selector-clearall';
bgneal@1: 
bgneal@1:         from_box.setAttribute('name', from_box.getAttribute('name') + '_old');
bgneal@1: 
bgneal@1:         // Set up the JavaScript event handlers for the select box filter interface
bgneal@1:         addEvent(filter_input, 'keyup', function(e) { SelectFilter.filter_key_up(e, field_id); });
bgneal@1:         addEvent(filter_input, 'keydown', function(e) { SelectFilter.filter_key_down(e, field_id); });
bgneal@1:         addEvent(from_box, 'dblclick', function() { SelectBox.move(field_id + '_from', field_id + '_to'); });
bgneal@1:         addEvent(to_box, 'dblclick', function() { SelectBox.move(field_id + '_to', field_id + '_from'); });
bgneal@1:         addEvent(findForm(from_box), 'submit', function() { SelectBox.select_all(field_id + '_to'); });
bgneal@1:         SelectBox.init(field_id + '_from');
bgneal@1:         SelectBox.init(field_id + '_to');
bgneal@1:         // Move selected from_box options to to_box
bgneal@1:         SelectBox.move(field_id + '_from', field_id + '_to');
bgneal@1:     },
bgneal@1:     filter_key_up: function(event, field_id) {
bgneal@1:         from = document.getElementById(field_id + '_from');
bgneal@1:         // don't submit form if user pressed Enter
bgneal@1:         if ((event.which && event.which == 13) || (event.keyCode && event.keyCode == 13)) {
bgneal@1:             from.selectedIndex = 0;
bgneal@1:             SelectBox.move(field_id + '_from', field_id + '_to');
bgneal@1:             from.selectedIndex = 0;
bgneal@1:             return false;
bgneal@1:         }
bgneal@1:         var temp = from.selectedIndex;
bgneal@1:         SelectBox.filter(field_id + '_from', document.getElementById(field_id + '_input').value);
bgneal@1:         from.selectedIndex = temp;
bgneal@1:         return true;
bgneal@1:     },
bgneal@1:     filter_key_down: function(event, field_id) {
bgneal@1:         from = document.getElementById(field_id + '_from');
bgneal@1:         // right arrow -- move across
bgneal@1:         if ((event.which && event.which == 39) || (event.keyCode && event.keyCode == 39)) {
bgneal@1:             var old_index = from.selectedIndex;
bgneal@1:             SelectBox.move(field_id + '_from', field_id + '_to');
bgneal@1:             from.selectedIndex = (old_index == from.length) ? from.length - 1 : old_index;
bgneal@1:             return false;
bgneal@1:         }
bgneal@1:         // down arrow -- wrap around
bgneal@1:         if ((event.which && event.which == 40) || (event.keyCode && event.keyCode == 40)) {
bgneal@1:             from.selectedIndex = (from.length == from.selectedIndex + 1) ? 0 : from.selectedIndex + 1;
bgneal@1:         }
bgneal@1:         // up arrow -- wrap around
bgneal@1:         if ((event.which && event.which == 38) || (event.keyCode && event.keyCode == 38)) {
bgneal@1:             from.selectedIndex = (from.selectedIndex == 0) ? from.length - 1 : from.selectedIndex - 1;
bgneal@1:         }
bgneal@1:         return true;
bgneal@1:     }
bgneal@1: }