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try to avoid unnecessary reflows in two more ways: (1) use jQuery.css() to set a batch of style properties at once, instead of doing it one at a time (2) when appending rows to the torrent list, use a document fragment to batch them into a single append.

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This commit is contained in:
Jordan Lee 2011-08-31 00:09:21 +00:00
parent 49458dcb2f
commit 0980112555
2 changed files with 11 additions and 13 deletions
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18
web/javascript/torrent-row.js
View file

@ -70,20 +70,16 @@ TorrentRendererHelper.createProgressbar = function(classes)
TorrentRendererHelper.renderProgressbar = function(controller, t, progressbar)
{
var e;
var display;
var info = TorrentRendererHelper.getProgressInfo(controller, t);
var e, style, width, display,
info = TorrentRendererHelper.getProgressInfo(controller, t);
// update the complete progressbar
e = progressbar.complete;
if (info.percent > 0) {
display = 'block';
e.style.width = '' + info.percent + '%';
} else {
display = 'none';
}
if (e.style.display !== display)
e.style.display = display;
style = e.style;
width = '' + info.percent + '%';
display = info.percent > 0 ? 'block' : 'none';
if (style.width!==width || style.display!==display)
$(e).css({ width: ''+info.percent+'%', display: display });
if (e.className !== info.complete)
e.className = info.complete;

6
web/javascript/transmission.js
View file

@ -1940,7 +1940,7 @@ Transmission.prototype =
refilter: function(rebuildEverything)
{
var i, e, id, t, row, tmp, rows, clean_rows, dirty_rows,
var i, e, id, t, row, tmp, rows, clean_rows, dirty_rows, frag,
sort_mode = this[Prefs._SortMethod],
sort_direction = this[Prefs._SortDirection],
filter_mode = this[Prefs._FilterMode],
@ -2008,6 +2008,7 @@ Transmission.prototype =
rows = [];
var ci=0, cmax=clean_rows.length;
var di=0, dmax=dirty_rows.length;
frag = document.createDocumentFragment();
while (ci!=cmax || di!=dmax)
{
var push_clean;
@ -2032,10 +2033,11 @@ Transmission.prototype =
if (ci !== cmax)
list.insertBefore(e, clean_rows[ci].getElement());
else
list.appendChild(e);
frag.appendChild(e);
rows.push(row);
}
}
list.appendChild(frag);
// update our implementation fields
this._rows = rows;