One valuable technique for understanding the DataGrid inner workings.
In Rev, choose the pointer tool, click on a data grid, then go the
inspector, choose 'custom properties' from the drop down,
and now check out the property sets. You should see dgProps and dgCache
Note all the properties that have been created when the data grid was
created.
Of course you can edit the values here, but you can also change them
in script lines.
One bit of confusion for me is that there is no dgText property set
visible here. The syntax
set the dgText [ true ] of group "DataGrid" to tHeaders
would logically mean that there would be a custom property set "dgText"
Interesting if you click on dgProps "row template" you will see:
group id 1011 of card id 1010 of stack "Data Grid Templates
1260751174078"
...at least in my version of Rev 3.5
Hope this helps in your travels.
Jim Ault
Las Vegas
On Dec 15, 2009, at 3:18 AM, Andre.Bisseret wrote:
Bonjour Jim, Trevor and others on this thread ;-)
Le 14 déc. 09 à 19:11, James Hurley a écrit :
...
Trevor (and Andre.Bisseret),
Thanks you for the very thoughtful reply(s).
It is heartening to see something defended by its parent. My
sincere apologies for treating your offspring in such a quick and
dirty fashion :-)
I'm sure I will appreciate the richness of this new Run Rev object
in time--see below.
FIrst to satisfy my quick and dirty needs, I find that the
following works well to get data displayed in a data grid field:
on mouseUp
put field "data" into tData --Tab delimited text
--The first line of tData contains the column names
put line 1 of tData into tHeaders
replace tab with cr in tHeaders
set dgProp["Columns"] of group "DataGrid" to tHeaders --Thanks to
Andre for this line.
set the dgText [ true ] of group "DataGrid" to tData
end mouseUp
Your handler above, confirmed by Trevoir, helped me a lot to
understand the possible uses of pFirstLineContainsHeaders.
In order to learn more about data grid, I tried several variations,
I put below in case it could interest someone :
local tData,tHeaders,
-- field "data" = lines of tab delimited text -- a Data Grid
"DataGrid" with 3 columns
------------
-- 1 ) IF THE LINE OF HEADERS IS NOT INCLUDED IN THE DATA (AS I AM
ACCUSTOMED TO)
-- 1.1) WITHOUT USING pFirstLineContainsHeaders; WORKS:
on mouseUp
put "header1" & cr & "header2" & cr & "header3" into tHeaders
set the dgProp["columns"] of grp "DataGrid" to tHeaders
put fld "data" into tData
set the dgText of group "DataGrid" to tData
end mouseUp
-- 1.2) USING pFirstLineContainsHeaders: USELESS BUT WORKS :-)))
on mouseUp
put "header1" & cr & "header2" & cr & "header3" into tHeaders
set the dgProp["columns"] of grp "DataGrid" to tHeaders
put fld "data" into tData
set the dgText[false] of group "DataGrid" to tData
end mouseUp
-- 2) IF, FOR SOME REASON, THE LINE OF HEADERS IS INCLUDED IN THE
DATA (FIRST LINE)
-- 2.1) WITHOUT USING pFirstLineContainsHeaders: WORKS:
on mouseUp
put field "data" into tData
put line 1 of tData into tHeaders
replace tab with cr in tHeaders
set dgProp["Columns"] of group "DataGrid" to tHeaders
delete line 1 of tData
set the dgText of group "DataGrid" to tData
end mouseUp
-- 2.2) USING pFirstLineContainsHeaders: WORKS:
on mouseUp -- the handler from Jim
put field "data" into tData
put line 1 of tData into tHeaders
replace tab with cr in tHeaders
set dgProp["Columns"] of group "DataGrid" to tHeaders --Thanks to
Andre for this line.
set the dgText [ true ] of group "DataGrid" to tData
end mouseUp
-------------------------------------------------
-- indeed, in all these handlers, it's possible to directly set
the dgText of grp "datagrid" to fld "data" (but less fast, I guess,
specially if it contains a lot of lines)
--------------------------------------------------
AS FOR THE SYNTAX OF pFirstLineContainsHeaders
OK: set the dgText[true]
nevertheless:
put true into pFirstLineContainsHeaders
set the dgText[pFirstLineContainsHeaders] of grp "datagrid" to true
works as well, but useless, OK :-)
set the pFirstLineContainsHeaders of grp "datagrid" to true does not
work as that is creating a custom prop; OK :-))
I am a bit slow-witted but I am beginning to understand quite what
this pFirstLineContainsHeaders can do ;-o)))))
Thanks to both of you,
André
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