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