drupal/misc/collapse.js

92 lines
3.0 KiB
JavaScript

// $Id$
(function ($) {
/**
* Toggle the visibility of a fieldset using smooth animations
*/
Drupal.toggleFieldset = function (fieldset) {
if ($(fieldset).is('.collapsed')) {
// Action div containers are processed separately because of a IE bug
// that alters the default submit button behavior.
var content = $('> div:not(.action)', fieldset);
$(fieldset).removeClass('collapsed');
content.hide();
content.slideDown({
duration: 'fast',
easing: 'linear',
complete: function () {
Drupal.collapseScrollIntoView(this.parentNode);
this.parentNode.animating = false;
$('div.action', fieldset).show();
},
step: function () {
// Scroll the fieldset into view
Drupal.collapseScrollIntoView(this.parentNode);
}
});
}
else {
$('div.action', fieldset).hide();
var content = $('> div:not(.action)', fieldset).slideUp('fast', function () {
$(this.parentNode).addClass('collapsed');
this.parentNode.animating = false;
});
}
};
/**
* Scroll a given fieldset into view as much as possible.
*/
Drupal.collapseScrollIntoView = function (node) {
var h = self.innerHeight || document.documentElement.clientHeight || $('body')[0].clientHeight || 0;
var offset = self.pageYOffset || document.documentElement.scrollTop || $('body')[0].scrollTop || 0;
var posY = $(node).offset().top;
var fudge = 55;
if (posY + node.offsetHeight + fudge > h + offset) {
if (node.offsetHeight > h) {
window.scrollTo(0, posY);
} else {
window.scrollTo(0, posY + node.offsetHeight - h + fudge);
}
}
};
Drupal.behaviors.collapse = {
attach: function (context, settings) {
$('fieldset.collapsible > legend:not(.collapse-processed)', context).each(function () {
var fieldset = $(this.parentNode);
// Expand if there are errors inside
if ($('input.error, textarea.error, select.error', fieldset).size() > 0) {
fieldset.removeClass('collapsed');
}
var summary = $('<span class="summary"></span>');
fieldset.
bind('summaryUpdated', function () {
var text = $.trim(fieldset.getSummary());
summary.html(text ? ' (' + text + ')' : '');
})
.trigger('summaryUpdated');
// Turn the legend into a clickable link and wrap the contents of the fieldset
// in a div for easier animation
var text = this.innerHTML;
$(this).empty().append($('<a href="#">' + text + '</a>').click(function () {
var fieldset = $(this).parents('fieldset:first')[0];
// Don't animate multiple times
if (!fieldset.animating) {
fieldset.animating = true;
Drupal.toggleFieldset(fieldset);
}
return false;
}))
.append(summary)
.after($('<div class="fieldset-wrapper"></div>')
.append(fieldset.children(':not(legend):not(.action)'))
).addClass('collapse-processed');
});
}
};
})(jQuery);