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make floating title less cpu intensive

This commit is contained in:
Andrew Dolgov 2013-06-25 01:35:07 +04:00
parent b627f574f8
commit d1343b844d
1 changed files with 13 additions and 19 deletions
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32
js/viewfeed.js
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@ -2216,30 +2216,24 @@ function openSelectedAttachment(elem) {
function updateFloatingTitle() {
try {
var hf = $("headlines-frame");
var child = $("RROW-" + _active_article_id);
var elems = $$("#headlines-frame > div[id*=RROW]");
if (child && child.offsetTop + child.offsetHeight > hf.scrollTop) {
for (var i = 0; i < elems.length; i++) {
var child = elems[i];
var header = child.getElementsByClassName("cdmHeader")[0];
if (child.offsetTop + child.offsetHeight > hf.scrollTop) {
var header = child.getElementsByClassName("cdmHeader")[0];
if (child.id != $("floatingTitle").getAttribute("rowid")) {
$("floatingTitle").setAttribute("rowid", child.id);
$("floatingTitle").innerHTML = header.innerHTML;
}
if (child.offsetTop < hf.scrollTop - header.offsetHeight - 100 &&
child.offsetTop + child.offsetHeight - hf.scrollTop > 100)
Element.show("floatingTitle");
else
Element.hide("floatingTitle");
break;
if (child.id != $("floatingTitle").getAttribute("rowid")) {
$("floatingTitle").setAttribute("rowid", child.id);
$("floatingTitle").innerHTML = header.innerHTML;
}
if (child.offsetTop < hf.scrollTop - header.offsetHeight - 100 &&
child.offsetTop + child.offsetHeight - hf.scrollTop > 100)
Element.show("floatingTitle");
else
Element.hide("floatingTitle");
}
} catch (e) {
exception_error("updateFloatingTitle", e);
}