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Item6242: Twisty behaviour differs between Browsers

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AppliesTo: Component: Priority: CurrentState: WaitingFor: TargetRelease ReleasedIn
Extension TwistyPlugin Normal No Action Required   n/a  

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Applies To:
Current State:
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Target Release:
Released In:


We have discovered that the default "span" mode of Twisty produces vastly different behaviour in different Browsers.

For example

  • Twisties appear to nest when they are not coded as nested (Firefox)

  • Twisties do not hide/show content when clicked (Safari)
The nesting effect occurs when an ENDTWISTY is indented, e.g.

   %TWISTY{id="twist1" link="Twisty 1" 
           showimgleft="%ICONURLPATH{toggleopen}%" hideimgleft="%ICONURLPATH{toggleclose}%"}%
   * a
   * b
   * c
   * d

Setting the ENDTWISTY flush left stops the "nesting".

Both the nesting and the "can't click" problem are solved by using mode="div".

Neither problem occurred before we upgraded to 4.2.4

Sample code

From TWiki:Sandbox/TwistyIssues.

  • In Safari, clicking "Click me 1" and "Click me 2" should produce expected "twisty" results. Clicking "Click me 3", "Click me 4", "Click me 5" produce no observable effect.

  • In Firefox, you should see one Twisty with link test "Click me 1". Clicking that will disclose "Click me 2".
In reality there are 5 unrelated, unnested, syntactically correct twisties.

Section A

  • a
  • b
  • c
  • d
  • aa
  • bb
  • cc
  • dd

DiffTool Report App FROM TO TAG
a aa aaa aaaa aaaaa
b bb bbb bbbb bbbb
c cc ccc cccc ccccc
d dd ddd dddd ddddd

Section B

Twisty content

Section C

Twisty content

-- TWiki:Main/VickiBrown - 07 Apr 2009

This may be related to a problem I see under Firefox 6.0.2 and reported on the TWiki:Plugins.TwistyPluginDev topic. In all five of the above examples, I see the Twisty content always - makes no difference if I click on the Twisty link or not. The error I was going to report as a separate bug was that, for me, a blank line in the twisty content always terminated that content. So, for example:

This is one line of the content, and

this should have been the next non-blank line in the content.

-- TWiki:Main.SteveWampler - 2011-09-28

The TwistyContrib and TwistyPlugin use a span tag by default. According to HTML rules, a span tag is automatically ended if you end a paragraph (e.g. empty line), introduce a list or table. So, unless you want the twisty inlined within one paragraph use the default span tag mode, else use the div tag mode with parameter mode="div". I fixed above example.

I set this bug item to "no action required". If you feel the default should be changed you can submit a feature request.

-- TWiki:Main.PeterThoeny - 2011-12-14

I filed feature proposal TWiki:Codev.NewAutoModeForTwisty that should avoid the "gotcha" reported here.

-- TWiki:Main.PeterThoeny - 2011-12-14

Summary Twisty behaviour differs between Browsers
ReportedBy TWiki:Main.VickiBrown

SVN Range TWiki-5.0.0, Mon, 23 Feb 2009, build 17838
AppliesTo Extension
Component TwistyPlugin
Priority Normal
CurrentState No Action Required


TargetRelease n/a

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Topic revision: r4 - 2011-12-15 - PeterThoeny
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