that's awesome, Jörn! Thanks for sharing that code. I'm looking
forward to playing around with it.
Cheers,
--Karl
_________________
Karl Swedberg
www.englishrules.com
www.learningjquery.com
On Jan 29, 2008, at 6:49 PM, Jörn Zaefferer wrote:
Karl Swedberg schrieb:
Sorry for the repeat posts, but this is the first time I've looked
at this sort of thing. I just realized that we can get up to 100
items by changing that bigIndex function -- just pad values less
than 10 and append a delimiter to each one: [...]
The serialization I've used for the treeview plugin works a bit
different, but may be applied here, too. The relevant code is this:
function serialize() {
function binary(arg) {
return arg ? 1 : 0;
}
var data = [];
branches.each(function(i, e) {
data[i] = $(e).is(":has(>ul:visible)") ? 1 : 0;
});
$.cookie(settings.cookieId, data.join("") );
}
function deserialize() {
var stored = $.cookie(settings.cookieId);
if ( stored ) {
var data = stored.split("");
branches.each(function(i, e) {
$(e).find(">ul")[ parseInt(data[i]) ? "show" : "hide"
]();
});
}
}
Branches is the jQuery object containing all list items that contain
nested lists in the tree. For each I add 1 or 0 to an array,
depending on the visibility (":visible") of the nested list
(is(":has(>ul:visible)")). That array is joined with no seperator
and stored into the cookie. settings.cookieId is "treeview" by
default and can be customized to enable storage of more then one
tree on a single page.
The deserialization works the other way round, splititing the ones/
zeros and showing and hiding the branches accordingly.
This scales pretty well, the size of the tree doesn't matter, and
the cookie is quite small, keeping the bandwith overhead rather low.
Jörn
