On Apr 24, 2010, at 6:31 PM, zryip theSlug wrote:
What is my best alternative if I assume that I have seen nothing in
the API to manage this empty area?
Hmm, it looks like a couple of additional properties would help here.
You need to know if 1) you clicked on a row or 2) you clicked in the
area where data is displayed.
I've added the following to the Data Grid in 4.5 :
the dgClickLine
the dgClickIndex
the dgClickedInDataView
To check if the user clicked in an empty area you would do the
following in a data grid script:
if the dgClickedInDataView of me and the dgClickIndex of me is empty
then
## clicked in empty area
end if
I'm including the relevant code to the end of this email if you want
to add it to your own data grid script. Just edit the script of btn
"Data Grid" of stack "revDataGridLibrary".
About this, by testing this solution, I seen an odd behavior with
inactive horizontal scrollbars. When you click on the scrollbar and
have lines in the datagrid, you select the corresponding line. Is it
totally normal?
No, not normal. I just tested this and noticed that rev does not
report a scrollbar as the target of a mouseclick if the scrollbar
thumb is not visible. I'm not sure why this is but it is what it
is :-) I've added a workaround for this to the data grid code for 4.5.
--
Trevor DeVore
Blue Mango Learning Systems
ScreenSteps: http://www.screensteps.com
Releasable Revolution Resources for Developers:
http://revolution.bluemangolearning.com
===========================
getprop dgClickLine
put the dgClickIndex of me into theIndex
if theIndex > 0 then return the dgLineOfIndex[theIndex] of me
else return empty
end dgClickLine
getprop dgClickIndex
## figure out the index clicked on
put empty into theIndex
put _RowControlClickedOn() into theControl
if theControl is not empty then
put the dgIndex of theControl into theIndex
end if
return theIndex
end dgClickIndex
getprop dgClickedInDataView
## Note that Rev doesn't report scrollbars as mousecontrol if
thumb is not
## showing. Hence the checks for visibility and click not within
of vertical scrollbar
## (dglist overlaps with rect of vertical scrollbar)
put the clickLoc into theClickLoc
return theClickLoc is within the rect of group "dgListMask" of me \
and (not the visible of scrollbar "dgScrollbar" of me \
or (the visible of scrollbar "dgScrollbar" of me and
theClickLoc is not within the rect of scrollbar "dgScrollbar" of me))
end dgClickedInDataView
private function _RowControlClickedOn
local theControl
## figure out the index clicked on
put the dgDataControl of the target into theControl
## Make sure user clicked in valid area.
if theControl is empty and the dgClickedInDataView of me then
## Perhaps no column in clicked area or no mouse receiving
controls in column
put the clickV into theY
repeat for each line thePotentialControl in
_ListOfVisibleControls()
put the rect of thePotentialControl into theRect
if theY >= item 2 of theRect and theY <= item 4 of theRect
then
put thePotentialControl into theControl
exit repeat
end if
end repeat
end if
return theControl
end _RowControlClickedOn
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