1 /*

     2 SelectFilter2 - Turns a multiple-select box into a filter interface.

     3 

     4 Different than SelectFilter because this is coupled to the admin framework.

     5 

     6 Requires core.js, SelectBox.js and addevent.js.

     7 */

     8 

     9 function findForm(node) {

    10     // returns the node of the form containing the given node

    11     if (node.tagName.toLowerCase() != 'form') {

    12         return findForm(node.parentNode);

    13     }

    14     return node;

    15 }

    16 

    17 var SelectFilter = {

    18     init: function(field_id, field_name, is_stacked, admin_media_prefix) {

    19         var from_box = document.getElementById(field_id);

    20         from_box.id += '_from'; // change its ID

    21         from_box.className = 'filtered';

    22 

    23         // Remove <p class="info">, because it just gets in the way.

    24         var ps = from_box.parentNode.getElementsByTagName('p');

    25         for (var i=0; i<ps.length; i++) {

    26             from_box.parentNode.removeChild(ps[i]);

    27         }

    28 

    29         // <div class="selector"> or <div class="selector stacked">

    30         var selector_div = quickElement('div', from_box.parentNode);

    31         selector_div.className = is_stacked ? 'selector stacked' : 'selector';

    32 

    33         // <div class="selector-available">

    34         var selector_available = quickElement('div', selector_div, '');

    35         selector_available.className = 'selector-available';

    36         quickElement('h2', selector_available, interpolate(gettext('Available %s'), [field_name]));

    37         var filter_p = quickElement('p', selector_available, '');

    38         filter_p.className = 'selector-filter';

    39         quickElement('img', filter_p, '', 'src', admin_media_prefix + 'img/admin/selector-search.gif');

    40         filter_p.appendChild(document.createTextNode(' '));

    41         var filter_input = quickElement('input', filter_p, '', 'type', 'text');

    42         filter_input.id = field_id + '_input';

    43         selector_available.appendChild(from_box);

    44         var choose_all = quickElement('a', selector_available, gettext('Choose all'), 'href', 'javascript: (function(){ SelectBox.move_all("' + field_id + '_from", "' + field_id + '_to"); })()');

    45         choose_all.className = 'selector-chooseall';

    46 

    47         // <ul class="selector-chooser">

    48         var selector_chooser = quickElement('ul', selector_div, '');

    49         selector_chooser.className = 'selector-chooser';

    50         var add_link = quickElement('a', quickElement('li', selector_chooser, ''), gettext('Add'), 'href', 'javascript: (function(){ SelectBox.move("' + field_id + '_from","' + field_id + '_to");})()');

    51         add_link.className = 'selector-add';

    52         var remove_link = quickElement('a', quickElement('li', selector_chooser, ''), gettext('Remove'), 'href', 'javascript: (function(){ SelectBox.move("' + field_id + '_to","' + field_id + '_from");})()');

    53         remove_link.className = 'selector-remove';

    54 

    55         // <div class="selector-chosen">

    56         var selector_chosen = quickElement('div', selector_div, '');

    57         selector_chosen.className = 'selector-chosen';

    58         quickElement('h2', selector_chosen, interpolate(gettext('Chosen %s'), [field_name]));

    59         var selector_filter = quickElement('p', selector_chosen, gettext('Select your choice(s) and click '));

    60         selector_filter.className = 'selector-filter';

    61         quickElement('img', selector_filter, '', 'src', admin_media_prefix + (is_stacked ? 'img/admin/selector_stacked-add.gif':'img/admin/selector-add.gif'), 'alt', 'Add');

    62         var to_box = quickElement('select', selector_chosen, '', 'id', field_id + '_to', 'multiple', 'multiple', 'size', from_box.size, 'name', from_box.getAttribute('name'));

    63         to_box.className = 'filtered';

    64         var clear_all = quickElement('a', selector_chosen, gettext('Clear all'), 'href', 'javascript: (function() { SelectBox.move_all("' + field_id + '_to", "' + field_id + '_from");})()');

    65         clear_all.className = 'selector-clearall';

    66 

    67         from_box.setAttribute('name', from_box.getAttribute('name') + '_old');

    68 

    69         // Set up the JavaScript event handlers for the select box filter interface

    70         addEvent(filter_input, 'keyup', function(e) { SelectFilter.filter_key_up(e, field_id); });

    71         addEvent(filter_input, 'keydown', function(e) { SelectFilter.filter_key_down(e, field_id); });

    72         addEvent(from_box, 'dblclick', function() { SelectBox.move(field_id + '_from', field_id + '_to'); });

    73         addEvent(to_box, 'dblclick', function() { SelectBox.move(field_id + '_to', field_id + '_from'); });

    74         addEvent(findForm(from_box), 'submit', function() { SelectBox.select_all(field_id + '_to'); });

    75         SelectBox.init(field_id + '_from');

    76         SelectBox.init(field_id + '_to');

    77         // Move selected from_box options to to_box

    78         SelectBox.move(field_id + '_from', field_id + '_to');

    79     },

    80     filter_key_up: function(event, field_id) {

    81         from = document.getElementById(field_id + '_from');

    82         // don't submit form if user pressed Enter

    83         if ((event.which && event.which == 13) || (event.keyCode && event.keyCode == 13)) {

    84             from.selectedIndex = 0;

    85             SelectBox.move(field_id + '_from', field_id + '_to');

    86             from.selectedIndex = 0;

    87             return false;

    88         }

    89         var temp = from.selectedIndex;

    90         SelectBox.filter(field_id + '_from', document.getElementById(field_id + '_input').value);

    91         from.selectedIndex = temp;

    92         return true;

    93     },

    94     filter_key_down: function(event, field_id) {

    95         from = document.getElementById(field_id + '_from');

    96         // right arrow -- move across

    97         if ((event.which && event.which == 39) || (event.keyCode && event.keyCode == 39)) {

    98             var old_index = from.selectedIndex;

    99             SelectBox.move(field_id + '_from', field_id + '_to');

   100             from.selectedIndex = (old_index == from.length) ? from.length - 1 : old_index;

   101             return false;

   102         }

   103         // down arrow -- wrap around

   104         if ((event.which && event.which == 40) || (event.keyCode && event.keyCode == 40)) {

   105             from.selectedIndex = (from.length == from.selectedIndex + 1) ? 0 : from.selectedIndex + 1;

   106         }

   107         // up arrow -- wrap around

   108         if ((event.which && event.which == 38) || (event.keyCode && event.keyCode == 38)) {

   109             from.selectedIndex = (from.selectedIndex == 0) ? from.length - 1 : from.selectedIndex - 1;

   110         }

   111         return true;

   112     }

   113 }