hierarchical lists with collapsing arrows

[Martin Baxter]

Xeubie Tsu wrote:
> Well, I would still like it to act as a list - i.e., I want to be able 
> to highlight items in blue. It's just that I don't want the arrow to 
> collapse unless I click the arrow.
> 
> I'll try that workaround...not to familiar with "the clickChar," but 
> I'll look it up. Thanks.
> 
> Oakes
> 
> 
>> From: Brian Yennie <briany at qldlearning.com>
>> Reply-To: How to use Revolution <use-revolution at lists.runrev.com>
>> To: How to use Revolution <use-revolution at lists.runrev.com>
>> Subject: Re: hierarchical lists with collapsing arrows
>> Date: Wed, 12 Apr 2006 16:05:51 -0700
>>
>> Xeubie,
>>
>> What happens when you turn off the "list behavior" of that field?
>> It looks like this only happens with list behavior turned on - dunno 
>> if anyone else has deeper insights!
>>
>> One workaround would be to use "the clickChar" to determine what exact 
>> character they actually clicked on - and make sure it was the arrow.
>>
>> HTH,
>>
>> - Brian
>>
>>> I forgot to mention, here's the code in my list field:
>>>
>>> on linkClicked
>>>  if the angle of image arrow.gif = 0 then
>>>    set the angle of image arrow.gif to -90
>>>  else
>>>    set the angle of image arrow.gif to 0
>>>  end if
>>> end linkClicked
>>>
>>> Like I said, it treats the whole list item as a link, so the arrow 
>>> changes direction even if I click on the text next to the arrow. For 
>>> an idea of what it looks like, I took a snapshot and attached it to 
>>> this message.
>>>
>>>
>>>> From: Jim Lyons <jimlyons at earthlink.net>
>>>> Reply-To: How to use Revolution <use-revolution at lists.runrev.com>
>>>> To: How to use Revolution <use-revolution at lists.runrev.com>
>>>> Subject: Re: hierarchical lists with collapsing arrows
>>>> Date: Wed, 12 Apr 2006 12:04:48 -0400
>>>>
>>>> On Apr 12, 2006, at 11:11 AM, Xeubie Tsu wrote:
>>>>
>>>>> I'm attempting to make a list field that can organize context into 
>>>>> "folders." I want an arrow icon next to folder names that you can 
>>>>> click to collapse the folder. One way to get the arrow icon next to 
>>>>> the text is to use "imagesource," but doing so makes it PART of the 
>>>>> list field itself so you can't click on it (you can only click the 
>>>>> whole list item).
>>>>>
>>>>> Does anyone know an easy way to do this?
>>>>
>>>> Make the first character with its imagesource set to the arrow icon 
>>>> also link text (ie set its text style to link) and use the 
>>>> linkClicked message in the field script to handle it.
>>>>
>>>> Jim Lyons

What I do is perhaps not exactly simple, but I set a tab stop so that 
all the disclosure graphics are effectively in a table column of their 
own. Each line has a leading character (with or without an imagesource) 
followed by a tab. Then when a line is clicked, I check the horizontal 
mouse co-ordinate (minus the left co-ordinate of the field) to see if it 
is within the first column as defined by the tabstops property, and if 
so I treat it as a potential expand/collapse event.

I like this because it allows for some latitude in click accuracy, and 
lets me do entirely different things when the remainder of the line is 
clicked or double-clicked.

Martin Baxter