popup-/contextmenu in Editor field of DataGrid?

[Trevor DeVore]

On Sep 11, 2009, at 5:12 AM, Klaus Major wrote:

> Hi all (and Trevor :-)

Hi Klaus :-)

> Any hints on how to popup a menu in the "Editor field" of a DataGrid?
> I want to let the user choose pre-made text to insert into that  
> column, know what I mean?

This lesson shows how to trigger the data grid mousedown code before  
displaying a contextual:

How Do I Show a Contextual Menu?: <http://revolution.screenstepslive.com/spaces/revolution/manuals/datagrid/lessons/2962 
 >

Although the example script would be placed in the data grid group  
script itself you could just as easily place the code in the behavior  
for a custom column template:

How Do I Customize A Table's Columns?: <http://revolution.screenstepslive.com/spaces/revolution/manuals/datagrid/lessons/3436-How-Do-I-Customize-A-Table-s-Columns- 
 >

> Or if that is not possible, I could also need this when right- 
> clicking on any column,
> so I can insert the chosen text into the clicked column.
>
> The popup button will NOT be part of the DataGrid.

As long as the popup menu button is on the card you won't have any  
problems. What you do need to do, however, is have the popup send a  
message back to the custom column control so that you can update the  
data grid value. I usually do this by setting a custom property on the  
button before displaying it. So below you will find one way to  
approach this.

-- Column behavior script

on mouseDown pMouseBtnNum
     dgMouseDown pMouseBtnNum
     if pMouseBtnNum is 3 then
         set the uTarget of button "MyContextualMenu" to the long id  
of me
         popup button "MyContextualMenu"
     end if
end mouseDown

Then in the menuPick handler of "MyContextualMenu" I would do  
something like this:

-- button "MyContextualMenu" script

on menuPick pChosen
     dispatch "UpdateColumnValue" to the uTarget of me with pChosen
end menuPick

Now you just add the UpdateColumnValue command to the column behavior  
script. The code will look just like any other code in the docs that  
update data grid values.

-- Column behavior script

command UpdateColumnValue pValue
     put the dgIndex of the me into theIndex
     put the dgDataOfIndex[theIndex] of the dgControl of me into  
theDataA
     put pValue into theDataA[the dgColumn of me]
     set the dgDataOfIndex[theIndex] of the dgControl of me to theDataA
end UpdateColumnValue

-- 
Trevor DeVore
Blue Mango Learning Systems
ScreenSteps: http://www.screensteps.com
Developer Resources: http://revolution.bluemangolearning.com