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[HOW TO - vB4] Making Boxes Collapsible
 cellarius
Join Date: Aug 2005
Posts: 1,987
08-22-2009, 10:00 PM
Start: OK, here's a small guide how to make a boxes/layers collapsible. Let's say, you have a simple div-container you want to make collapsible. The css ids and classes assigned to the elements are completely arbitrary. Code:
<div id="test" class="anything">
<h2 class="blockhead">
<span>Collapse it!</span>
</h2>
<div class="blockrow">
<p>Let's add a button to collapse this box :-)</p>
</div>
</div>
Step 1: Adding "collapse"-class to surrounding container Code:
<div id="test" class="anything collapse"> Step 2: Adding id to what we want to hide As a second step we have to add an unique id to the element that contains what we want to dissapear. Note: This element can be almost any html-tag that can be hidden (div, ul, ol, p, a - you get the idea). Note also: The element has to have an id that needs to be unique not only on the page, but on the whole site. So make sure you use some unique prefix, suffix or something like that (marked in blue). Code:
<div class="blockrow" id="cel_dummy"> Step 3: Adding collapse-button Inside the header add the code for the collapse-button. You'll have to adapt it according to the id you assigned in step 2 (adaptions needed marked in blue). Make sure the part you add inside the image name variable is not the exact same as the id you added to the container that you want to hide. If you add the exact same, the button will vanish under certain circumstances, too: Code:
<a class="collapse" id="collapse_cel_dummy" href="{vb:raw relpath}#top"><img src="{vb:stylevar imgdir_button}/collapse{vb:raw vbcollapse.collapseimg_cel_dummy_img}_40b.png" alt="{vb:rawphrase collapse_this_category}" /></a>
Result: In the end, the code will look like that: Code:
<div id="test" class="block collapse">
<h2 class="blockhead">
<span>Collapse it!</span>
<a class="collapse" id="collapse_cel_dummy" href="{vb:raw relpath}#top"><img src="{vb:stylevar imgdir_button}/collapse{vb:raw vbcollapse.collapseimg_cel_dummy_img}_40b.png" alt="{vb:rawphrase collapse_this_category}" /></a>
</h2>
<div class="blockrow" id="cel_dummy">
<p>Let's add a button to collapse this box :-)</p>
</div>
</div>
Collapsed as default? Yes, but... There is a way default the box to be collapsed by default. But this it's quick and dirty, and really not recommended to use. Basically, you have to add display:none to the style of the collapsing container, like so: Code:
<div class="blockrow" id="cel_dummy" style="display: none;">
Collapse more than one box at a time? Yes, but... Now, functionally this is perfectly possible - just use the same id for every element you want to collapse together. But beware: for valid code you can't use duplicate ids on a page. So if you do that, your code will break xhtml validation! I hope this will be useful for some of you! -c Please note that this article has been written first for alpha 1 version and been updated for beta 3. There still may be changes until gold. For example the button used is clearly marked as beta (_40b in the file name). 
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#3
12-05-2009, 09:19 AM
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Thanks,
if the user has JavaScript disabled, we can add : HTML Code:
<a class="collapse" id="collapse_cel_dummy" href="{vb:raw relpath}#top"><img src="{vb:stylevar imgdir_button}/collapse{vb:raw vbcollapse.collapseimg_cel_dummy_img}_40b.png" alt="{vb:rawphrase collapse_this_category}" /></a> <noscript>You need to have JavaScript enabled so that you can use this ...</noscript>
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#4
12-29-2009, 04:07 AM
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Do I have to use "class="collapse"" in my collapse/expand link?
Because when I do, it puts the link at the very top right of the post's and no matter where I move the link code in the template, it will always place it at the top right (near the inline moderation radio button area). And if I choose not to use class "collapse" then when I click the link it no longer collapse's/expand's but instead jumps to the top of the page.
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#6
12-29-2009, 06:04 AM
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Whenever I change the class for a custom one I made the expand/collapse function no longer works. See my thread here:
https://vborg.vbsupport.ru/showthread.php?t=231538
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#8
12-29-2009, 06:08 AM
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Here is what Im working with:
Quote:
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#9
12-29-2009, 06:28 AM
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Having a second class works for me. Just tested once again using Firebug to add a second class to a standard collapsible box in vB4. Having "collapse test" on the a-tag around the collapse-button in posting pormissions box on showthread leaves functionality intact.
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#10
01-01-2010, 06:30 PM
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Awesome! How would I go about adding a border and changing the background color? Also, I noticed the collapse button isn't centered vertically, but instead it touches the bottom. How do I adjust this?
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