Chosen gets "cut" when placed in area with "overflow:hidden".

[ethaniel]

I have a div with a form. The div has "overflow:hidden" option in the css.
When Chosen gets created, and it goes below the bottom line of the div, it gets cut.

Here is a screenshot:

[reconbot]

This is the same as issue #59

[dfischer]

Isn't this unavoidable since the container element, is well, "overflow :hidden" that's just how CSS works. The only way around this is to render the drop down outside of the container and then use absolute positioning.

[johnnyfreeman]

Yeah, I agree with dfischer. Doesn't seem like a Chosen issue. By definition, the overflow property specifies what happens if content overflows an element's boundaries. If you don't want it the overflow to be hidden, then change that property.

[reconbot]

While true, I think this is a common use case with dialog boxes. (Especially jquery dialog)

[dfischer]

It is a common use case, however based on this ticket, like I previously mentioned... the entire structure and implementation has to change if you want to accomplish this.

You are required to render outside of the container for this to happen and then use jQuery/JS magic to figure out the positioning relative to the trigger.

jQuery Dialog's case doesn't depend upon a container element so it just uses positioning based on center dimensions and width of the dialog.

[dfischer]

This is more of a CSS issue, not a Chosen issue. Don't put overflow: hidden on the container. You're going to have to use another technique to clear the floats below it if that's what you're doing.

[medelbrock]

I just wrote some code which I think does what you're looking for:

$.fn.extend({
chosen: function (data, options) {
if ($(this).parent().css("overflow") == "hidden") {
//get the offsets between parent and child to calculate the diff
//when we push to absolute
var y = $(this).offset().top - $(this).parent().offset().top,
x = $(this).offset().left - $(this).parent().offset().left,
$t1 = $("<div/>", {
css: {
"position": "relative",
"height": $(this).parent().height,
"width": $(this).parent().width
}
}),
$t2 = $("<div/>", {
css: {
"position": "absolute",
"top": y,
"left": x
}
});
$t1.insertBefore($(this).parent());
$(this).parent().appendTo($t1);
$t2.appendTo($t1);
$(this).appendTo($t2);
}
return $(this).each(function (input_field) {
if (!($(this)).hasClass("chzn-done")) {
return new Chosen(this, data, options);
}
});
}
});

(btw I'm new to github as of today so if there is a different place where I should be posting code let me know)

That code effectively does the following:

1. calculate the offset between the select box and the parent.
2. create a parent div with the same dimensions as your overflow hidden and set to relative.
3. create a parent for the select box creating the element as absolute using the x and y offsets from step 1.
4. insert new parent before the select's parent, append the overflow div inside of the new parent, append that new select parent inside of the master parent, append the select to the new child parent.

[tompaton]

Interesting idea Matthew, but I think that's not going to work in a jQuery-UI dialog is it?

It's more likely that the dropdown element (.chzn-drop) needs to be pulled out of the .chzn-container and up to the document body...

[medelbrock]

Just add a style to the page and your answer is yes:

.ui-dialog{ overflow:visible; }

[ethaniel]

Doesn't work for me, since I create my pages using div's as columns (as opposed to td's and tables).
I use "overflow:hidden" to stop runaway content from ruining neighbour divs.

I suppose many of you use the same structure.

[tompaton]

That won't work, as the dialogs are set to overflow:auto so they can
have scrollbars if necessary.

On Fri, Jul 29, 2011 at 11:47 PM, ethaniel
reply@reply.github.com
wrote:

Doesn't work for me, since I create my pages using div's as columns (as opposed to td's and tables).
I use "overflow:hidden" to stop runaway content from ruining neighbour divs.

I suppose many of you use the same structure.

Reply to this email directly or view it on GitHub:
#86 (comment)

[medelbrock]

Before we get any further into this conversation, what I've done is a theoretical fix. It can't be applied to all scenarios because all it takes is one element having a counter-attribute to screw it up. The above solution with the overflow visible will only work with dialog option resizable:false. Why would you need to have a select overflow outside of a dialog?

[tompaton]

Ok, here are a bunch of screenshots which hopefully clarify the issue.

http://i.imgur.com/9ZY9O.png
http://i.imgur.com/c2PLo.png
http://i.imgur.com/1oqZ7.png
http://i.imgur.com/ZBrQj.png

Screenshots 1 & 2 show how it behaves, there isn't enough space for
the dropdown "inside" the dialog, so it scrolls and is hidden as a
result. This is very clunky to use and ugly and not how the built in
select controls work (they show over the top of the content, no matter
how deep inside it they are or what it's overflow style is.)

Screenshots 3 & 4 show my current work-around, which is to put a whole
heap of space below the dropdown. This is also ugly and makes the form
harder to use.

So, to summarise, the real point is that native select controls aren't
restricted to their parent container and if it's possible, the chosen
enhanced select control shouldn't be either, since it's designed to be
a drop-in replacement for the native control.

[medelbrock]

This theoretically can be done but it would require a completely different construction/positioning system by the chosen plugin. This change would be extensive and require about a 30% rewrite of the current plugin. I consider this a feature request and not a bug. All browsers have a default render for select elements.Chosen replicates it using divs but is not treated like a select element.

[dfischer]

Like I said, the only way to do this is absolute positioning OUTSIDE of the triggered element. There's no other way. Correct on @medelbrock