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function heightChangeHandler() {
var curr_height = $(document).height();
if (doc_height !== curr_height) {
doc_height = curr_height;
$(document.body).trigger('sticky_kit:recalc');
}
}
// Handle dynamic content
if (window.MutationObserver !== undefined) {
// Attach mutation observer to #content and trigger it on
// changes to class and style attributes (which affect the height
// of the content). Trigger a recalculation of the sticky kit when
// a mutation occurs so the sidebar will
$(document).ready(function() {
if ($('#content').length === 0) {
return;
}
var target = $('#content').get(0),
stickyObserver = new window.MutationObserver(function() {
window.requestAnimationFrame(function() {
$(document.body).trigger('sticky_kit:recalc');
});
});
stickyObserver.observe(target, {
attributes: true,
attributeFilter: ['style', 'class'],
characterData: true,
childList: true,
subtree: true
});
});
} else {
// Stores document height (we will need this to check for changes)
var doc_height;
STUDIP.domReady(() => {
doc_height = $(document).height();
});
// Recalculcate positions on ajax and img load events.
// Inside the handlers the current document height is compared
// to the previous height before the event occured so recalculation
// only happens on actual changes
$(document).on('ajaxComplete', heightChangeHandler);
$(document).on('load', '#content img', heightChangeHandler);
// Specialized handler to trigger recalculation when wysiwyg
// instances are created.
$(document).on('load.wysiwyg', 'textarea', function() {
$(document.body).trigger('sticky_kit:recalc');
});
}
// Engage
STUDIP.domReady(() => {
STUDIP.Sidebar.checkActiveLineHeight();
});
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