Translate metadata to field content

J. Landman Gay jacque at hyperactivesw.com
Fri Feb 21 14:15:34 EST 2020


Welcome to the party Hermann. :) Unfortunately the HTML isn't under my control and may change 
periodically. It's retrieved from a server on demand. The metadata I'm looking for isn't a 
link, it's a text property, and is already hidden when displaying text in a field. It would be 
similar to looking for a specific instance of bolded text.

This would be good for other uses though, so thanks for the idea.

On 2/20/20 3:12 PM, hh via use-livecode wrote:
> As others try to optimize ("ping") I'll try an improvement too ("pong")
> with using another method that requires to change your link targets ONCE:
> 
> Instead of unique targets <a name="target10"> write in your field
> 
> "<p hidden>"&numTochar(1)&"target10"&numTochar(1)&"</p>""
> 
> Handler replaceTargets below does it (slowly) but you probably don't
> need it on mobile.
> 
> So assuming (unusual)
> 
> -- [1] you use the following for a link target
> --     <p hidden>target10<p>
> -- [2] you use the following for a local page link
> --     <a href="#target10">Target10</a>
> -- [3] you don't use <p hidden> elsewhere. Else add
> --     an additional marker to it to differentiate.
> 
> 
> Then script your field with the following simple handler:
> 
> on linkClicked pUrl
>    put the milliseconds into m1
>    lock messages; lock screen
>    if pUrl begins with "#" then
>      put numToChar(1)& (char 2 to -1 of pUrl) &numToChar(1) into tTarget
>      put 1+offset(tTarget,me)+length(tTarget) into tOff
>      select char tOff to tOff+3 of me -- see it in locked field
>      -- select char tOff of me -- variant
>      scrollSelectionIntoView -- optional
>    end if
>    put the millisecs -m1 into fld "timing1"
> end linkClicked
> 
> ---- helpers (optionally needed)
> 
> -- Note. LC adds also an additional "<p hidden></p>", we don't mind.
> on replaceTargets -- should be optimized if used often
>    put the millisecs into m1
>    lock messages; lock screen
>    put the htmltext of fld 1 into tHTML
>    set linedel to "<a name="&quote
>    set itemdel to "</a>"
>    put line 1 of tHtml into tI2
>    put numToChar(1) into b1
>    repeat for each line L in (line 2 to -1 of tHtml)
>      put "<p hidden>"&b1&char 1 to offset(quote,L)-1 of L into item 1 of L
>      put offset("</a>",L) into o1
>      put b1&"</p>" into char o1 to o1+3 of L
>      put L after tI2
>    end repeat
>    set htmlText of fld 1 to tI2 -- LC translates numToChar(1) to ""
>    put the millisecs-m1 into fld "timing2"
> end mouseUp
> 
> on scrollSelectionIntoView
>    put the selectedLoc into tSL
>    put the vscroll of me into tV
>    put item 2 of tSL - the top of me into tDiff
>    if tDiff > 0.75*the height of me then
>      set vscroll of me to tV + 0.4*the height of me
>    else if tDiff < 0.25*the height of me then
>      set vscroll of me to tV - 0.4*the height of me
>    end if
> end scrollSelectionIntoView
> 
> 
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-- 
Jacqueline Landman Gay         |     jacque at hyperactivesw.com
HyperActive Software           |     http://www.hyperactivesw.com



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