1 files changed, 144 insertions, 0 deletions
diff --git a/static/admin/js/SelectBox.js b/static/admin/js/SelectBox.js
new file mode 100644
index 0000000..1a14959
--- /dev/null
+++ b/static/admin/js/SelectBox.js
@@ -0,0 +1,144 @@
+(function($) {
+    'use strict';
+    var SelectBox = {
+        cache: {},
+        init: function(id) {
+            var box = document.getElementById(id);
+            var node;
+            SelectBox.cache[id] = [];
+            var cache = SelectBox.cache[id];
+            var boxOptions = box.options;
+            var boxOptionsLength = boxOptions.length;
+            for (var i = 0, j = boxOptionsLength; i < j; i++) {
+                node = boxOptions[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);
+            var node;
+            $(box).empty(); // clear all options
+            var new_options = box.outerHTML.slice(0, -9);  // grab just the opening tag
+            var cache = SelectBox.cache[id];
+            for (var i = 0, j = cache.length; i < j; i++) {
+                node = cache[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);
+                    new_options += new_option.outerHTML;
+                }
+            }
+            new_options += '</select>';
+            box.outerHTML = new_options;
+        },
+        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;
+            var cache = SelectBox.cache[id];
+            for (var i = 0, j = cache.length; i < j; i++) {
+                node = cache[i];
+                node.displayed = 1;
+                var node_text = node.text.toLowerCase();
+                var numTokens = tokens.length;
+                for (var k = 0; k < numTokens; k++) {
+                    token = tokens[k];
+                    if (node_text.indexOf(token) === -1) {
+                        node.displayed = 0;
+                        break;  // Once the first token isn't found we're done
+                    }
+                }
+            }
+            SelectBox.redisplay(id);
+        },
+        delete_from_cache: function(id, value) {
+            var node, delete_index = null;
+            var cache = SelectBox.cache[id];
+            for (var i = 0, j = cache.length; i < j; i++) {
+                node = cache[i];
+                if (node.value === value) {
+                    delete_index = i;
+                    break;
+                }
+            }
+            cache.splice(delete_index, 1);
+        },
+        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;
+            var cache = SelectBox.cache[id];
+            for (var i = 0, j = cache.length; i < j; i++) {
+                node = cache[i];
+                if (node.value === value) {
+                    return true;
+                }
+            }
+            return false;
+        },
+        move: function(from, to) {
+            var from_box = document.getElementById(from);
+            var option;
+            var boxOptions = from_box.options;
+            var boxOptionsLength = boxOptions.length;
+            for (var i = 0, j = boxOptionsLength; i < j; i++) {
+                option = boxOptions[i];
+                var option_value = option.value;
+                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 option;
+            var boxOptions = from_box.options;
+            var boxOptionsLength = boxOptions.length;
+            for (var i = 0, j = boxOptionsLength; i < j; i++) {
+                option = boxOptions[i];
+                var option_value = option.value;
+                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);
+            var boxOptions = box.options;
+            var boxOptionsLength = boxOptions.length;
+            for (var i = 0; i < boxOptionsLength; i++) {
+                boxOptions[i].selected = 'selected';
+            }
+        }
+    };
+    window.SelectBox = SelectBox;
+})(django.jQuery);