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static/admin/js/SelectBox.js
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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) { var new_option = new Option(node.text, node.value, false, false); // Shows a tooltip when hovering over the option new_option.setAttribute("title", node.text); box.options[box.options.length] = new_option; } } }, 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'; } } } |