| var SelectBox = { |
| cache: new Object(), |
| init: function(id) { |
| var box = document.getElementById(id); |
| var node; |
| SelectBox.cache[id] = new Array(); |
| var cache = SelectBox.cache[id]; |
| for (var i = 0; (node = box.options[i]); i++) { |
| cache.push({value: node.value, text: node.text, displayed: 1}); |
| } |
| }, |
| redisplay: function(id) { |
| // Repopulate HTML select box from cache |
| var box = document.getElementById(id); |
| box.options.length = 0; // clear all options |
| for (var i = 0, j = SelectBox.cache[id].length; i < j; i++) { |
| var node = SelectBox.cache[id][i]; |
| if (node.displayed) { |
| box.options[box.options.length] = new Option(node.text, node.value, false, false); |
| } |
| } |
| }, |
| filter: function(id, text) { |
| // Redisplay the HTML select box, displaying only the choices containing ALL |
| // the words in text. (It's an AND search.) |
| var tokens = text.toLowerCase().split(/\s+/); |
| var node, token; |
| for (var i = 0; (node = SelectBox.cache[id][i]); i++) { |
| node.displayed = 1; |
| for (var j = 0; (token = tokens[j]); j++) { |
| if (node.text.toLowerCase().indexOf(token) == -1) { |
| node.displayed = 0; |
| } |
| } |
| } |
| SelectBox.redisplay(id); |
| }, |
| delete_from_cache: function(id, value) { |
| var node, delete_index = null; |
| for (var i = 0; (node = SelectBox.cache[id][i]); i++) { |
| if (node.value == value) { |
| delete_index = i; |
| break; |
| } |
| } |
| var j = SelectBox.cache[id].length - 1; |
| for (var i = delete_index; i < j; i++) { |
| SelectBox.cache[id][i] = SelectBox.cache[id][i+1]; |
| } |
| SelectBox.cache[id].length--; |
| }, |
| add_to_cache: function(id, option) { |
| SelectBox.cache[id].push({value: option.value, text: option.text, displayed: 1}); |
| }, |
| cache_contains: function(id, value) { |
| // Check if an item is contained in the cache |
| var node; |
| for (var i = 0; (node = SelectBox.cache[id][i]); i++) { |
| if (node.value == value) { |
| return true; |
| } |
| } |
| return false; |
| }, |
| move: function(from, to) { |
| var from_box = document.getElementById(from); |
| var to_box = document.getElementById(to); |
| var option; |
| for (var i = 0; (option = from_box.options[i]); i++) { |
| if (option.selected && SelectBox.cache_contains(from, option.value)) { |
| SelectBox.add_to_cache(to, {value: option.value, text: option.text, displayed: 1}); |
| SelectBox.delete_from_cache(from, option.value); |
| } |
| } |
| SelectBox.redisplay(from); |
| SelectBox.redisplay(to); |
| }, |
| move_all: function(from, to) { |
| var from_box = document.getElementById(from); |
| var to_box = document.getElementById(to); |
| var option; |
| for (var i = 0; (option = from_box.options[i]); i++) { |
| if (SelectBox.cache_contains(from, option.value)) { |
| SelectBox.add_to_cache(to, {value: option.value, text: option.text, displayed: 1}); |
| SelectBox.delete_from_cache(from, option.value); |
| } |
| } |
| SelectBox.redisplay(from); |
| SelectBox.redisplay(to); |
| }, |
| sort: function(id) { |
| SelectBox.cache[id].sort( function(a, b) { |
| a = a.text.toLowerCase(); |
| b = b.text.toLowerCase(); |
| try { |
| if (a > b) return 1; |
| if (a < b) return -1; |
| } |
| catch (e) { |
| // silently fail on IE 'unknown' exception |
| } |
| return 0; |
| } ); |
| }, |
| select_all: function(id) { |
| var box = document.getElementById(id); |
| for (var i = 0; i < box.options.length; i++) { |
| box.options[i].selected = 'selected'; |
| } |
| } |
| } |