Managing the hilite color of selected text

Terry Judd tsj at unimelb.edu.au
Tue Sep 27 20:11:21 CDT 2011


On 28/09/2011, at 10:49 AM, Pete wrote:

> Never mind - I forgot to pass tabKey!  Sorry!
> Pete
> Molly's Revenge <http://www.mollysrevenge.com>

Actually, if you use a selectionChanged handler instead of a mouseLeave handler you won't need a separate tabKey handler.

local pSelection

on selectionChanged
   put the selectedChunk into pSelection
end selectionChanged

on openField
   if pSelection is not empty then
      set the backgroundColor of pSelection to empty
      put empty into pSelection
   end if
end openField

on exitField
   if pSelection is not empty then
      set the backgroundColor of pSelection to "0,255,255"
   end if
end exitField

on closeField
   exitField
end closeField

Terry...

> 
> 
> 
> 
> On Tue, Sep 27, 2011 at 5:07 PM, Pete <pete at mollysrevenge.com> wrote:
> 
>> Thanks Craig and Dave - I used Dave's suggestion (mainly because I'm not
>> very familiar with using graphics in LC) and all seems to be working fine
>> now.
>> 
>> The only remaining issue I have now is how to figure out if I entered the
>> field via a mouse click or a tab key.  Right now I have a tabKey handler in
>> the control whose layer is 1 less than the layer of my text field.  In it, I
>> set a custom property of the text field to indicate that I entered it via
>> the tab key and check for that in the openField handler of the text field.
>> 
>> For some reason, pressing tab in the control whose layer is 1 less than the
>> text field doesn't give focus to the text field.  It's traversalOn property
>> is true and lockText is false.  Any other reasons why I can't tab to it?  Or
>> maybe there's a better way to deal with this situation?
>> 
>> Thanks,
>> 
>> 
>> Pete
>> Molly's Revenge <http://www.mollysrevenge.com>
>> 
>> 
>> 
>> 
>> On Tue, Sep 27, 2011 at 3:23 PM, <dunbarx at aol.com> wrote:
>> 
>>> Pete:
>>> 
>>> 
>>> Why not place a colored graphic over the selectedText? I have done this,
>>> and though it seems like a kluge, well, it is a kluge, it is noneTheLess
>>> simple and effective.
>>> 
>>> 
>>> Craig Newman
>>> 
>>> 
>>> 
>>> 
>>> 
>>> -----Original Message-----
>>> From: Pete <pete at mollysrevenge.com>
>>> To: How to use LiveCode <use-livecode at lists.runrev.com>
>>> Sent: Tue, Sep 27, 2011 12:21 pm
>>> Subject: Managing the hilite color of selected text
>>> 
>>> 
>>> LC does not retain the hilite of any selected text in a field once you
>>> click
>>> on another control and does not restore it when you click back into the
>>> field again.  I'm hoping to find a generalised solution to this.
>>> 
>>> In other applications, it seems that the standard way of working is:
>>> 
>>> - change the hilite of any selected text in a field to a light grey color
>>> when another control is clicked
>>> 
>>> - change the hilite back to the blue hilite color if the user tabs back
>>> into
>>> the field
>>> 
>>> - clear the hilite completely if the user clicks back into the field
>>> 
>>> That's the behavior I'm aiming for.
>>> 
>>> So far, I have:
>>> 
>>> - a mouseLeave handler that sets a custom property of the field to its
>>> selectedChunk  and changes the backgroundcolor of the selectedchunk to
>>> gray
>>> 
>>> - a mouseEnter handler that uses the custom property to set the
>>> backgroundcolor of the selected text back to blue again.
>>> 
>>> So far so good.  What remains is to handle what happens when the user
>>> arrives back into the field either by tabbing into it or by clicking into
>>> it.
>>> 
>>> So far I have tried to use an openField handler to achieve this.  Right
>>> now,
>>> I'm just trying to deal with the situation where the user clicks back into
>>> the field, by setting the background color of the field to either empty or
>>> white, but neither method removes the highlight from the selected text and
>>> if I type more text into the field, it appears with the hilite background
>>> color.  Even if I delete all the text in the field and type new text in,
>>> it
>>> still appears with the blue background color.
>>> 
>>> The other issue is how to distinguish between the user clicking into the
>>> field and tabbing into it.
>>> 
>>> I'm pretty sure this must have come up before so hoping for some guidance
>>> from anyone who has come up with the solution.
>>> 
>>> Thanks,
>>> 
>>> 
>>> 
>>> Pete
>>> Molly's Revenge <http://www.mollysrevenge.com>
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>> 
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