--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/media/django/js/admin/CollapsedFieldsets.js	Mon Apr 06 03:10:59 2009 +0000
@@ -0,0 +1,85 @@
+// Finds all fieldsets with class="collapse", collapses them, and gives each
+// one a "Show" link that uncollapses it. The "Show" link becomes a "Hide"
+// link when the fieldset is visible.
+
+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 CollapsedFieldsets = {
+    collapse_re: /\bcollapse\b/,   // Class of fieldsets that should be dealt with.
+    collapsed_re: /\bcollapsed\b/, // Class that fieldsets get when they're hidden.
+    collapsed_class: 'collapsed',
+    init: function() {
+        var fieldsets = document.getElementsByTagName('fieldset');
+        var collapsed_seen = false;
+        for (var i = 0, fs; fs = fieldsets[i]; i++) {
+            // Collapse this fieldset if it has the correct class, and if it
+            // doesn't have any errors. (Collapsing shouldn't apply in the case
+            // of error messages.)
+            if (fs.className.match(CollapsedFieldsets.collapse_re) && !CollapsedFieldsets.fieldset_has_errors(fs)) {
+                collapsed_seen = true;
+                // Give it an additional class, used by CSS to hide it.
+                fs.className += ' ' + CollapsedFieldsets.collapsed_class;
+                // (<a id="fieldsetcollapser3" class="collapse-toggle" href="#">Show</a>)
+                var collapse_link = document.createElement('a');
+                collapse_link.className = 'collapse-toggle';
+                collapse_link.id = 'fieldsetcollapser' + i;
+                collapse_link.onclick = new Function('CollapsedFieldsets.show('+i+'); return false;');
+                collapse_link.href = '#';
+                collapse_link.innerHTML = gettext('Show');
+                var h2 = fs.getElementsByTagName('h2')[0];
+                h2.appendChild(document.createTextNode(' ('));
+                h2.appendChild(collapse_link);
+                h2.appendChild(document.createTextNode(')'));
+            }
+        }
+        if (collapsed_seen) {
+            // Expand all collapsed fieldsets when form is submitted.
+            addEvent(findForm(document.getElementsByTagName('fieldset')[0]), 'submit', function() { CollapsedFieldsets.uncollapse_all(); });
+        }
+    },
+    fieldset_has_errors: function(fs) {
+        // Returns true if any fields in the fieldset have validation errors.
+        var divs = fs.getElementsByTagName('div');
+        for (var i=0; i<divs.length; i++) {
+            if (divs[i].className.match(/\berrors\b/)) {
+                return true;
+            }
+        }
+        return false;
+    },
+    show: function(fieldset_index) {
+        var fs = document.getElementsByTagName('fieldset')[fieldset_index];
+        // Remove the class name that causes the "display: none".
+        fs.className = fs.className.replace(CollapsedFieldsets.collapsed_re, '');
+        // Toggle the "Show" link to a "Hide" link
+        var collapse_link = document.getElementById('fieldsetcollapser' + fieldset_index);
+        collapse_link.onclick = new Function('CollapsedFieldsets.hide('+fieldset_index+'); return false;');
+        collapse_link.innerHTML = gettext('Hide');
+    },
+    hide: function(fieldset_index) {
+        var fs = document.getElementsByTagName('fieldset')[fieldset_index];
+        // Add the class name that causes the "display: none".
+        fs.className += ' ' + CollapsedFieldsets.collapsed_class;
+        // Toggle the "Hide" link to a "Show" link
+        var collapse_link = document.getElementById('fieldsetcollapser' + fieldset_index);
+        collapse_link.onclick = new Function('CollapsedFieldsets.show('+fieldset_index+'); return false;');
+        collapse_link.innerHTML = gettext('Show');
+    },
+
+    uncollapse_all: function() {
+        var fieldsets = document.getElementsByTagName('fieldset');
+        for (var i=0; i<fieldsets.length; i++) {
+            if (fieldsets[i].className.match(CollapsedFieldsets.collapsed_re)) {
+                CollapsedFieldsets.show(i);
+            }
+        }
+    }
+}
+
+addEvent(window, 'load', CollapsedFieldsets.init);