LiveCode Forums.

Posted: **Wed Aug 24, 2011 7:34 pm**

Hi, I've run into a bit of a brick wall and I am hoping someone can help me out. I am trying to implement the functionality that occurs in the bookmark folders section of Safari when you right click and select 'Edit Name'. In Safari the bookmark folders list functions like a scrolling list field in LC. When you right click and select 'Edit Name' it allows you to edit the bookmark folder selection that is under the mouse, a process which is terminated by return, tab or a click anywhere outside of the current selection. I have it all working except for the part about clicking outside the current entry. I cannot seem to detect any mouse clicks except a button 3 (right mouse click).... 1 and 2's are ignored. Is there a way I can force LC to send me a mouse click message while the field is being edited?

Thanks

-- Mark

Posted: **Wed Aug 24, 2011 7:49 pm**

Mark...

put

Code: Select all

on mouseLeave
   set the lockText of me to true
end mouseLeave

into the script of your scrolling list field

be well

Dixie

Posted: **Wed Aug 24, 2011 8:29 pm**

Dixie wrote:Mark...

put
Code: Select all
on mouseLeave
   set the lockText of me to true
end mouseLeave
into the script of your scrolling list field

Hi John, better but..... if the user selects 'Edit Name' and then moves the mouse outside the field they can't actually edit the name? The actual effect in Safari is clicking anywhere outside the current selection, even the line above or below, ends editing and reverts to list behavior. To do that I would need to:

1. know that the mouse was clicked
2. determine that the click was outside the current line

But at the moment I cannot get a reliable indication that the mouse was clicked (btw, in the version I am uploading here do a right mouse button will show the effect I am looking for with a left click). I may have to go with your suggestion as the closest possible "work around". I am uploading the revised version here (this also has a better "indicator" of the editing/scroll behavior mode by reverting to highlighting text when not editing... I am not explaining that well but edit an entry and press enter, tab or the right mouse button and it will be obvious)

Thanks for the suggestion John!!!

-- Mark

Posted: **Wed Aug 24, 2011 8:45 pm**

Hi Mark,

add this to the code of your field:

Code: Select all

on selectionChanged
   if the lockText of me is true then exit selectionChanged -- if field is locked then it is not editable, bail out
   
   put the cSelectedLine of me into x
   put the selectedline of me into tSelectedLine
   
   -- put x && tSelectedLine -- for debugging
   if x <> word 2 of tSelectedLine then
      set the listbehavior of fld "Scrolling List Field" to true
      set the locktext of fld "Scrolling List Field" to true
      select  line x of fld "Scrolling List Field"
      -- empty cselectedline and cpreviousname so we don't accidently reuse them later
      set the cselectedline of fld "Scrolling List Field" to empty
      set the cpreviousname of fld "Scrolling List Field" to empty
   end if
end selectionChanged


-- in case you also want to catch the mouse leaving the field as of Dixie's recommendation
on mouseLeave
   if the lockText of me is true then exit mouseLeave -- if field is locked then it is not editable, bail out
   
   put the cSelectedLine of me into x
   set the listbehavior of fld "Scrolling List Field" to true
   set the locktext of fld "Scrolling List Field" to true
   select  line x of fld "Scrolling List Field"
   -- empty cselectedline and cpreviousname so we don't accidently reuse them later
   set the cselectedline of fld "Scrolling List Field" to empty
   set the cpreviousname of fld "Scrolling List Field" to empty
end mouseLeave

it tests if a selectionChanged message is sent and if the did change. If the selectedLine is changed it is assumed that the user did not edit the line anymore

in my limited testing it did work.

Kind regards

Bernd

Posted: **Wed Aug 24, 2011 8:50 pm**

Mark...

This seems to work... another handler to add to the collection in the listField ..

put this into the mouseDown handler... and notice the local variable theLine

Code: Select all

local theLine

on mousedown theButton
   put word 2 of clickLine() into theLine

Code: Select all

on mouseMove
   if the lockText of me is false AND word 2 of the mouseLine <> theLine then
      set the lockText of me to true
   end if
end mouseMove

be well,

Dixie

Hi Bernd, you must have been on your holidays, haven't seen you on the forum lately...

Posted: **Wed Aug 24, 2011 9:02 pm**

@Dixie,

hi

Hi Bernd, you must have been on your holidays, haven't seen you on the forum lately...

it is a lot worse

I am refurbishing my house, knocking down walls, insulation, new roof, the works. I would prefer to spend more time on the forum.

Kind regards

Bernd

Posted: **Wed Aug 24, 2011 10:45 pm**

bn wrote:Hi Mark,

add this to the code of your field:
Code: Select all
on selectionChanged
   if the lockText of me is true then exit selectionChanged -- if field is locked then it is not editable, bail out
   
 
it tests if a selectionChanged message is sent and if the did change. If the selectedLine is changed it is assumed that the user did not edit the line anymore

Bernd

Hey Bernd, you nailed it. Kudos to you and Dixie... I've uploaded the final version with all of your suggestions.

You guys are fast... I'm coming back here for all my questions now!!!!!

-- Mark

Posted: **Thu Aug 25, 2011 6:10 pm**

Hi Mark,

I'm coming back here for all my questions now!!!!!

I am still waiting for your questions regarding the arrowKeys and the backspace / delete key. (if the user uses them this could mess up your list in no time)

Since I could not wait any longer

(as you know I am not supposed to be on the forum but on my construction site) here is my take:

Add this to the script of your scrolling list field:

Code: Select all

on arrowKey pTheKey
   if pTheKey is "up" or pTheKey is "down" then exit arrowKey
   
   put the cSelectedLine of me into x
   put the selectedChunk into tSelectedChunk
   put word 2 of tSelectedChunk into tStart
   put word 4 of tSelectedChunk into tEnd
 
   if pTheKey is "left"  then 
      if the number of lines of char 1 to tEnd  of me = x then
         pass arrowKey
      end if
   end if
   if  pTheKey is "right" then
      if the number of lines of char 1 to tStart + 1 of me = x then
         pass arrowKey
      end if
   end if
end arrowKey

-- watch out for the delete key /backspace key
on rawKeyDown pKey
   if pKey <> "65288" then pass rawKeyDown -- backspace or delete key = 65288
   put the cSelectedLine of me into x
   put the selectedChunk into tSelectedChunk
   put word 2 of tSelectedChunk into tStart
   put word 4 of tSelectedChunk into tEnd
   
   if the number of lines of char 1 to tEnd  of me = x then pass rawKeyDown
      
end rawKeyDown

it is tedious to catch all possibilities, I hope we accounted for most.

Kind regards

Bernd

Posted: **Thu Aug 25, 2011 9:57 pm**

Hi Mark,

I guess you also might want the user to be able to use the arrowkeys up / down on the locked list field to change the selection.

If you change the beginning of above "on arrowKey" handler to this code it should work. Includes a little workaround in case the field does not have focus and you tab into the field to give it focus the arrowkeys will not work right away without the workaround. See comment in code. Without the workaround you would have to click into the field first for the arrowkeys to start working.

Code: Select all

on arrowKey pTheKey
   --if (pTheKey is "up" or pTheKey is "down")  then exit arrowKey  -- old code
   if (pTheKey is "up" and the locktext of me is true) or (pTheKey is "down" and the locktext of me is true) then 
      select line word 2 of the selectedLine of me of me -- a workaround since if you tab into the field the arrowkeys dont work
      pass arrowKey -- move selection up an down if field is locked
   end if
   -- rest of old code

I guess I better start to try to mindreading, else I start talking to myself

But what you want shows nicely how you can change/adapt the behavior of a list field.

Kind regards

Bernd

Posted: **Fri Aug 26, 2011 12:21 am**

bn wrote:Hi Mark,

I guess you also might want the user to be able to use the arrowkeys up / down on the locked list field to change the selection.

I guess I better start to try to mindreading, else I start talking to myself But what you want shows nicely how you can change/adapt the behavior of a list field.

Bernd

Hi Bernd, thanks so much for this.... I was away busy working on another problem (see your email!) and didn't see your posts... The drag and drop problem has kind of worn me out but I will look at all of this good stuff tomorrow. It'll be fun to put it all together!!!!!

-- Mark

Posted: **Fri Aug 26, 2011 12:50 am**

bn wrote:Hi Mark,

I am still waiting for your questions regarding the arrowKeys and the backspace / delete key. (if the user uses them this could mess up your list in no time)

Since I could not wait any longer (as you know I am not supposed to be on the forum but on my construction site) here is my take:

it is tedious to catch all possibilities, I hope we accounted for most.
Bernd

Hi Bernd,
Sheesh, how can I repay you!! That is some terrific code and you caught problems I never thought of (so I guess that makes you a kind of mind reader). If anyone else is following along I highly recommend adding Bernd's latest suggestions to the "editing" example posted previously.

Thank you!

-- Mark

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