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// 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 = '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(/\berror\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 = '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 = '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);
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