File diff 86e1646f8f31 → f742f86f4be4
www/conservancy/static/admin/js/SelectFilter2.js
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new file 100644
 
/*
 
SelectFilter2 - Turns a multiple-select box into a filter interface.
 

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

	
 
Requires core.js, SelectBox.js and addevent.js.
 
*/
 

	
 
function findForm(node) {
 
    // returns the node of the form containing the given node
 
    if (node.tagName.toLowerCase() != 'form') {
 
        return findForm(node.parentNode);
 
    }
 
    return node;
 
}
 

	
 
var SelectFilter = {
 
    init: function(field_id, field_name, is_stacked, admin_media_prefix) {
 
        var from_box = document.getElementById(field_id);
 
        from_box.id += '_from'; // change its ID
 
        from_box.className = 'filtered';
 

	
 
        // Remove <p class="info">, because it just gets in the way.
 
        var ps = from_box.parentNode.getElementsByTagName('p');
 
        for (var i=0; i<ps.length; i++) {
 
            from_box.parentNode.removeChild(ps[i]);
 
        }
 

	
 
        // <div class="selector"> or <div class="selector stacked">
 
        var selector_div = quickElement('div', from_box.parentNode);
 
        selector_div.className = is_stacked ? 'selector stacked' : 'selector';
 

	
 
        // <div class="selector-available">
 
        var selector_available = quickElement('div', selector_div, '');
 
        selector_available.className = 'selector-available';
 
        quickElement('h2', selector_available, interpolate(gettext('Available %s'), [field_name]));
 
        var filter_p = quickElement('p', selector_available, '');
 
        filter_p.className = 'selector-filter';
 
        quickElement('img', filter_p, '', 'src', admin_media_prefix + 'img/admin/selector-search.gif');
 
        filter_p.appendChild(document.createTextNode(' '));
 
        var filter_input = quickElement('input', filter_p, '', 'type', 'text');
 
        filter_input.id = field_id + '_input';
 
        selector_available.appendChild(from_box);
 
        var choose_all = quickElement('a', selector_available, gettext('Choose all'), 'href', 'javascript: (function(){ SelectBox.move_all("' + field_id + '_from", "' + field_id + '_to"); })()');
 
        choose_all.className = 'selector-chooseall';
 

	
 
        // <ul class="selector-chooser">
 
        var selector_chooser = quickElement('ul', selector_div, '');
 
        selector_chooser.className = 'selector-chooser';
 
        var add_link = quickElement('a', quickElement('li', selector_chooser, ''), gettext('Add'), 'href', 'javascript: (function(){ SelectBox.move("' + field_id + '_from","' + field_id + '_to");})()');
 
        add_link.className = 'selector-add';
 
        var remove_link = quickElement('a', quickElement('li', selector_chooser, ''), gettext('Remove'), 'href', 'javascript: (function(){ SelectBox.move("' + field_id + '_to","' + field_id + '_from");})()');
 
        remove_link.className = 'selector-remove';
 

	
 
        // <div class="selector-chosen">
 
        var selector_chosen = quickElement('div', selector_div, '');
 
        selector_chosen.className = 'selector-chosen';
 
        quickElement('h2', selector_chosen, interpolate(gettext('Chosen %s'), [field_name]));
 
        var selector_filter = quickElement('p', selector_chosen, gettext('Select your choice(s) and click '));
 
        selector_filter.className = 'selector-filter';
 
        quickElement('img', selector_filter, '', 'src', admin_media_prefix + 'img/admin/selector-add.gif', 'alt', 'Add');
 
        var to_box = quickElement('select', selector_chosen, '', 'id', field_id + '_to', 'multiple', 'multiple', 'size', from_box.size, 'name', from_box.getAttribute('name'));
 
        to_box.className = 'filtered';
 
        var clear_all = quickElement('a', selector_chosen, gettext('Clear all'), 'href', 'javascript: (function() { SelectBox.move_all("' + field_id + '_to", "' + field_id + '_from");})()');
 
        clear_all.className = 'selector-clearall';
 

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

	
 
        // Set up the JavaScript event handlers for the select box filter interface
 
        addEvent(filter_input, 'keyup', function(e) { SelectFilter.filter_key_up(e, field_id); });
 
        addEvent(filter_input, 'keydown', function(e) { SelectFilter.filter_key_down(e, field_id); });
 
        addEvent(from_box, 'dblclick', function() { SelectBox.move(field_id + '_from', field_id + '_to'); });
 
        addEvent(to_box, 'dblclick', function() { SelectBox.move(field_id + '_to', field_id + '_from'); });
 
        addEvent(findForm(from_box), 'submit', function() { 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');
 
    },
 
    filter_key_up: function(event, field_id) {
 
        from = document.getElementById(field_id + '_from');
 
        // don't submit form if user pressed Enter
 
        if ((event.which && event.which == 13) || (event.keyCode && event.keyCode == 13)) {
 
            from.selectedIndex = 0;
 
            SelectBox.move(field_id + '_from', field_id + '_to');
 
            from.selectedIndex = 0;
 
            return false;
 
        }
 
        var temp = from.selectedIndex;
 
        SelectBox.filter(field_id + '_from', document.getElementById(field_id + '_input').value);
 
        from.selectedIndex = temp;
 
        return true;
 
    },
 
    filter_key_down: function(event, field_id) {
 
        from = document.getElementById(field_id + '_from');
 
        // right arrow -- move across
 
        if ((event.which && event.which == 39) || (event.keyCode && event.keyCode == 39)) {
 
            var old_index = from.selectedIndex;
 
            SelectBox.move(field_id + '_from', field_id + '_to');
 
            from.selectedIndex = (old_index == from.length) ? from.length - 1 : old_index;
 
            return false;
 
        }
 
        // down arrow -- wrap around
 
        if ((event.which && event.which == 40) || (event.keyCode && event.keyCode == 40)) {
 
            from.selectedIndex = (from.length == from.selectedIndex + 1) ? 0 : from.selectedIndex + 1;
 
        }
 
        // up arrow -- wrap around
 
        if ((event.which && event.which == 38) || (event.keyCode && event.keyCode == 38)) {
 
            from.selectedIndex = (from.selectedIndex == 0) ? from.length - 1 : from.selectedIndex - 1;
 
        }
 
        return true;
 
    }
 
}