Wikipedia:NavFrame

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NavFrame is a system of collapsible boxes. It uses a combination of CSS and Javascript, the source for which can be found in MediaWiki:Common.css and MediaWiki:Common.js.

Deprecation notes[edit]

The system is deprecated in favour of using the mw-collapsible, mw-collapsed and mw-collapsible-content CSS classes. It will be removed without significant advanced notice once it has been removed from, or replaced in, all articles in which it is used. When it is removed, content with NavFrame will display as uncollapsed. Users may wish to update their pages so that their collapsing elements continue to work as they prefer. See below.

Migration[edit]

Users should migrate away from NavFrame (though in articles, be mindful of WP:MOSCOLLAPSE). Most non-article and non-talk page uses have already been migrated. They may do so in one of three ways:

  1. by selecting an appropriate collapsible template, or
  2. by migrating to a table structure, or
  3. by migrating the HTML themselves.

Background knowledge for 2 or 3 can be found at MediaWiki wiki.

To migrate the basic HTML with divs, here is the change you need to make:

From
<div class="NavFrame (collapsed)">
  <div class="NavHead">Collapsible content title</div>
  <div class="NavContent">
    Collapsible content
  </div>
</div>
To
<div class="mw-collapsible (mw-collapsed)">
  <div>Collapsible content title</div>
  <div class="mw-collapsible-content">
    Collapsible content
  </div>
</div>

To migrate in a more pixel-perfect way, see below. This way retains colors, borders, and removes some jumpiness with the navigation toggle and a centered title, but does require the addition of a new div, as well as merging with any existing styles applied to the NavFrame elements:

From
<div class="NavFrame (collapsed)">
  <div class="NavHead">Collapsible content title</div>
  <div class="NavContent">
    Collapsible content
  </div>
</div>
To
<div style="mw-collapsible (mw-collapsed)" style="padding: 4px; border: 1px solid #a2a9b1; text-align: center; font-size: 95%;">
  <div style="line-height: 1.6em; font-weight: bold; background-color: #ccf;"><div style="margin: 0 4em">Collapsible content title</div></div>
  <div class="mw-collapsible-content" style="font-size: 100%;">
    Collapsible content
  </div>
</div>

How to use[edit]

The basic concept here is to use the div element within a Wiki article's markup code to identify certain content (which we'll call the "details" here) that we want the user to be able to "show" or "hide". The markup code used to achieve this effect comprises three main classes: NavFrame, NavHead, NavContent.

The underlying implementation uses Javascript to add a "show" or "hide" link in the NavHead part, and to turn the visibility of the NavContent part on or off. In web browsers that do not support Javascript, or where Javascript is disabled, the content will always be displayed, and the "show"/"hide" links will not be present.

The default behavior of this code will initially "show" the details, as well as a link to "hide" the details. To reverse the default behavior, so that the details are initially hidden, use class="NavFrame collapsed" (instead of class="NavFrame") in the outer div element. Do not add style="display:none;" to the NavContent element, because that will make it impossible for users without Javascript to see the content.

Simple example[edit]

You will need to create three div elements:

<div class="NavFrame">
  <div class="NavHead">[... This is the title of your collapsible content ...]</div>
  <div class="NavContent">
    [... The content you want to hide goes here ...]
  </div>
</div>


To initially hide the content do this:

<div class="NavFrame collapsed">
  <div class="NavHead">[... This is the title of the hidden content ...]</div>
  <div class="NavContent">
    [... This content is initially hidden ...]
  </div>
</div>

Mixed classes example[edit]

You can even apply other classes along with these, making a more styled design rather than if you were to use the standard classes:

<div class="messagebox standard-talk NavFrame">
  <div class="somerandomclass NavHead">
    [... This is the title; it does not have to be plain text, you can get creative here ...]</div>
  <div class="NavContent anotherclass">
    [... The content you want to hide goes here ...]
  </div>
</div>

Getting a caption instead of a heading[edit]

If you swap the order of the two inner div elements, then you can get an always-visible caption below optionally-hidden content, instead of an always-visible heading above optionally-hidden content:

<div class="NavFrame">
  <div class="NavContent">
    [... The content you want to hide goes here ...]
  </div>
  <div class="NavHead">[... This is the caption below your collapsible content ...]</div>
</div>

If the title doesn't fit on one line[edit]

If the title is too long, then the formatting is very bad:

<div style="width: 20em">
<div class="NavFrame">
  <div class="NavHead">[... This is the title of your collapsible content ...]</div>
  <div class="NavContent">
    [... The content you want to hide goes here ...]
  </div>
</div>
</div>

To correct this, you need to add height: auto to the style of the NavHead div, and a dummy element to leave space for the "show/hide" link:

<div style="width: 20em">
<div class="NavFrame" style="width: 20em">
  <div class="NavHead" style="height:auto">
    <div class="hack-to-leave-space" style="float:right">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</div>
[... This is the title of your collapsible content ...]
  </div>
  <div class="NavContent">
    [... The content you want to hide goes here ...]
  </div>
</div>
</div>

Left-alignment[edit]

To have things lined up to the left, add in this line of code

style="text-align:left"

to the first (or whichever) <div> you want the text inside aligned to the left.

Limitations[edit]

Currently, the three Nav* classes apply styles of their own. When mixing classes, this causes some of the Nav styles to override other styles (in the above example, NavFrame is overriding the styles from .messagebox.standard-talk).

Accessibility[edit]

All browsers from Internet Explorer 5.5 and on (IE6/7/8, Firefox, Safari/Chrome/KHTML, Opera 8/9, etc.) that support JavaScript will properly collapse the elements.

Internet Explorer 5 and browsers which do not support JavaScript will render the elements without the [hide/show] links and will not collapse them.

Templates[edit]

Navigation templates comparison
Collapsible Header color Image Groups Style (body)
parameter/s
Examples
{{Navbox}} collapsible navbox Left/right of body Yes Yes
{{Navbox with collapsible groups}} collapsible navbox Left/right of body and/or in each list Yes Yes
{{Navbox with columns}} collapsible navbox Left/right of columns No Yes
Collapsible attributes
Type CSS classes JavaScript Collapses when Custom
initial state
Nesting
Collapsible tables collapsible Defined in Common.js 2 or more autocollapse on page Yes Yes

See also[edit]