%META:TOPICINFO{author="TWikiContributor" date="1140597757" format="1.1" version="5"}%
---+!! <nop>%TOPIC%

*This contrib packages in a convenient way the !JavaScript library and the CSS file needed to implement Twisty sections.*

!TwistyContrib is installed by default in TWiki 4 and used by [[TWiki:Plugins.TwistyPlugin][Twisty Plugin]].

It is recommended to use the !TwistyPlugin as it eases the deployment and use of this contrib.

This Contrib should work with [[TWiki:Codev.DakarRelease][TWiki 4]] and newer.

%TOC{title="On this page:"}%

---++ Usage examples

If the contrib is properly installed (and !JavaScript is enabled in your browser) you should see two folding sections below.

---+++ Basic Twisty
<verbatim>
<span id="demo1show" class="twistyTrigger twistyMakeVisible"><button class="twikiButton"> Unfold </button></span>
<span id="demo1hide" class="twistyTrigger twistyHidden"><button class="twikiButton"> Fold </button></span>
<span id="demo1toggle" class="twistyContent twistyMakeHidden">
my twisty content
</span>
</verbatim>

Generates:

<span id="demo1show" class="twistyTrigger twistyMakeVisible"><button class="twikiButton"> Unfold </button></span>
<span id="demo1hide" class="twistyTrigger twistyHidden"><button class="twikiButton"> Fold </button></span>
<span id="demo1toggle" class="twistyContent twistyMakeHidden">
my twisty content
</span>

---+++ Twisty with placeholder text
<verbatim>
<span id="demo2show" class="twistyTrigger twistyMakeVisible"><a href="#">Expand...</a> <span class="twistyPlaceholder">Hamlet is without question the most famous play in the English language...</span></span>
<span id="demo2hide" class="twistyTrigger twistyHidden"><a href="#">Collapse...</a></span>
<span id="demo2toggle" class="twistyContent twistyMakeHidden">
Hamlet is without question the most famous play in the English language. Probably written in 1601 or 1602, the tragedy is a milestone in Shakespeare's dramatic development.
</span>
</verbatim>

Generates:

<span id="demo2show" class="twistyTrigger twistyMakeVisible"><a href="#">Expand...</a> <span class="twistyPlaceholder">Hamlet is without question the most famous play in the English language...</span></span>
<span id="demo2hide" class="twistyTrigger twistyHidden"><a href="#">Collapse...</a></span>
<span id="demo2toggle" class="twistyContent twistyMakeHidden">
Hamlet is without question the most famous play in the English language. Probably written in 1601 or 1602, the tragedy is a milestone in Shakespeare's dramatic development.
</span>

Skins can customize the color of the twisty placeholder by modifiying the =.twistyPlaceholder= style.

---++ Twisty made easy

Manual written by [[TWiki:Main.HaraldJoerg][Harald Joerg]]. Examples require [[TWiki:Plugins.SpreadsheetPlugin][Spreadsheet Plugin]] to work (installed by default).

<blockquote>
Some of my TWiki users are impressed by the optical effect of what can be done with TWiki:Plugins.TwistyPlugin - and they keep asking me: "How do I do that? I don't understand the documentation, and I don't understand the raw text of your topics!"

They indeed have a point here.  The docs aren't easily understood.  It isn't easy to pick all the variables needed from a single example, and just copypasting sometimes fails in embarrassing ways if non-unique =id= attributes are present in a topic.  Maybe it is easy for a power user, but it surely isn't easy _enough_.  There _ought_ to be a way to make it easier.

Well, here you are.

Just set a couple of site preferences, and your users will immediately understand your examples and start writing their own twisties.  And what's more: They'll do so in a _consistent_ way, across all your topics in all webs.
</blockquote>

---+++ You Write 
In your !Main.TWikiPreferences write:
<verbatim>
   * Set FLIP = <span id="twid_%CALC{$SETM(twisty_id, + 1)$GET(twisty_id)}%show" class="twistyTrigger twistyMakeVisible">
       <a href="#">more...</a>
     </span>
     <span id="twid_%CALC{$GET(twisty_id)}%hide" class="twistyTrigger twistyHidden">
       <a href="#">close</a>
     </span>
     <div id="twid_%CALC{$GET(twisty_id)}%toggle" class="twistyContent twistyMakeHidden">
   * Set FLOP = </div>
</verbatim>
%T% You can include the text in a verbatim block if you want (like I have done here).
Additionally I've added plenty of newlines and spaces to make it readable.
This works, and you don't have to care for invalid HTML!

---+++ Your Users Write
In any topic, your users can now write things like this:
<verbatim>
   * *Brace and parenthesize in K&R style* 
     %FLIP% 
     When setting out a code block, use the K&R style of bracketing.  
     That is, place the opening brace at the end of the construct that controls the block. ... 
     %FLOP%
   * *Separate your control keywords from the following opening bracket* 
     %FLIP% 
     Control structures regulate the dynamic behaviour of a program, so the keywords 
     of control structures are the most critical components of a program. ... 
     %FLOP%
</verbatim>

---+++ You See
   * *Brace and parenthesize in K&R style* 
     %FLIP% 
     When setting out a code block, use the K&R style of bracketing.  
     That is, place the opening brace at the end of the construct that controls the block. ... 
     %FLOP%
   * *Separate your control keywords from the following opening bracket* 
     %FLIP% 
     Control structures regulate the dynamic behaviour of a program, so the keywords 
     of control structures are the most critical components of a program. ... 
     %FLOP%

---+++ All on, all off

You can toggle all Twisties on or off at once by putting a link or button on the page with class =twistyExpandAll= or =twistyCollapseAll=.

<verbatim>
<button class="twistyExpandAll twikiButton">Expand all</button> 
<button class="twistyCollapseAll twikiButton">Collapse all</button>
</verbatim>

Creates these controls:

<button class="twistyExpandAll twikiButton">Expand all</button> 
<button class="twistyCollapseAll twikiButton">Collapse all</button>

When you want to use links, write:

<verbatim>
#VarTOGGLE

<a href="#TOGGLE" class="twistyExpandAll">Expand all</a> 
<a href="#TOGGLE" class="twistyCollapseAll">Collapse all</a>
</verbatim>


#VarTOGGLE

<a href="#TOGGLE" class="twistyExpandAll">Expand all</a> 
<a href="#TOGGLE" class="twistyCollapseAll">Collapse all</a>




---++ Settings

	* Set SHORTDESCRIPTION = Twisty section javascript library to open/close content dynamically 

You can also set the global TWiki variable TWISTYCONTRIB_DEBUG to 1 to make the contrib use uncompressed javascript sources, in the event of problems.


---++ Installation Instructions
%*INSTALL_INSTRUCTIONS%
	* !TwistyContrib uses these header includes:
	<verbatim>
<style type="text/css" media="all">
@import url("%PUBURL%/%TWIKIWEB%/TwistyContrib/twist.css");
</style>
<script type="text/javascript" src="%PUBURL%/%TWIKIWEB%/TWikiJavascripts/twikilib.js"></script>
<script type="text/javascript" src="%PUBURL%/%TWIKIWEB%/TWikiJavascripts/twikiPref.js"></script>
<script type="text/javascript" src="%PUBURL%/%TWIKIWEB%/TWikiJavascripts/twikiCSS.js"></script>
<script type="text/javascript" src="%PUBURL%/%TWIKIWEB%/BehaviourContrib/behaviour.js"></script>
<script type="text/javascript" src="%PUBURL%/%TWIKIWEB%/TwistyContrib/twist.js"></script>
</verbatim>


---++ Contrib Info

|  Authors: | !JavaScript written by TWiki:Main.ArthurClemens; Contrib packaged by  TWiki:Main.RafaelAlvarez; original !JavaScript written by TWiki:Main.SamHasler. |
|  Copyright &copy;: | 2005 Sam Hasler and Rafael Alvarez; 2006,2007 Arthur Clemens |
|  License: | [[http://www.gnu.org/copyleft/gpl.html][GPL]] |
|  Dependencies: | <table border="1"><tr><th>Name</th><th>Version</th><th>Description</th></tr><tr><td align="left">TWiki::Plugins::BehaviourContrib</td><td align="left">&gt;=1.000</td><td align="left">Required</td></tr></table> |
|  Plugin&nbsp;Version: | 20 Jun 2007 (version 1.4.1)  |
|  Version: | 15675 (22 Jan 2008) |
|  Change&nbsp;History: | <!-- versions below in reverse order -->&nbsp; |
|  20 Jun 2007 | 1.4 Arthur Clemens - Updated script so TwistyPlugin can work without extra javascript 'init' calls. |
|  18 Jun 2007 | 1.3 Arthur Clemens - Updated with TWiki 4 !JavaScript files. |
|  25 Oct 2006 | 1.2 Arthur Clemens - Updated !JavaScript to support !TwistyPlugin version 1.2  |
|  26 Sep 2006 | 1.010 Arthur Clemens - Complete !JavaScript rewrite |
|  12 Sep 2005 | 1.000 First Version |
|  Home: | http://TWiki.org/cgi-bin/view/Plugins/%TOPIC% |
|  Feedback: | http://TWiki.org/cgi-bin/view/Plugins/%TOPIC%Dev |
|  Appraisal: | http://TWiki.org/cgi-bin/view/Plugins/%TOPIC%Appraisal |

__Related Topics:__ %TWIKIWEB%.TWikiPreferences
 
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