B4J Question How to get the value of the selected single cell in a tableview

[rwblinn]

Hi All,

by default the cell selection is by row. Using below changes to selection by cell.

Dim JO As JavaObject = tableview1
Dim JO2 As JavaObject = JO.RunMethod("getSelectionModel", Null)
JO2.RunMethod("setCellSelectionEnabled", Array As Object(True))

With the mouse or arrow keys the single cell is displayed

Question: How to get the value of the selected single cell by using mouseclick or using arrow keys?

I tried:

tableviewMonth_SelectedRowChanged

but as expected the content of the whole row is returned.

then

Dim JO As JavaObject = tableview1
Dim JO2 As JavaObject = JO.RunMethod("getSelectionModel", Null)
Dim r() As Object = JO2.RunMethod("getSelectedItem", Null)
For i = 0 To r.Length - 1
    Log(r(i))
Next

but again the whole row is returned although the single cell is shown as selected.

Looked up further for JavaAPI methods, but could not find a solution.

Appreciate any hints. Testproject attached.

 

[Erel]

I will add support for cell selection in the next version.

 

[davelew1s]

That's great just what we need...Thanks Erel...Rob your part solution make the table look better when making a selection, so i'll be using it for now thanks.
Dave.

 

[rwblinn]

Thank You Erel and good to see of use by Dave.

Keep the good work on B4J.

 

[Daestrum]

It can be done with

tab1.getSelectionModel().getSelectedItem()[tab1.getSelectionModel().getSelectedCells().get(0).getColumn()]

but converting to JavaObject calls could be fun

 

[rwblinn]

Thanks for the suggestion = Indeed - I tried that direction also but receive an error message like:

java.lang.IllegalAccessException: Class anywheresoftware.b4j.object.JavaObject can not access a member of class javafx.scene.control.TableView$TableViewArrayListSelectionModel with modifiers "public"

using your code --- but also by other methods to access the cell:

Private Sub getSelectedItem As String
    Dim JO As JavaObject = tableview1
    ' get the selectionmodel
    Dim JOSelectionModel As JavaObject = JO.RunMethod("getSelectionModel", Null)
    ' get the column
    Dim JOGetSelectedCells As JavaObject = JOSelectionModel.RunMethod("getSelectedCells", Null)
    Dim JOGet0 As JavaObject = JOGetSelectedCells .RunMethod("get", Array As Object(0))
    Dim cellIndex As Int = JOGet0.RunMethod("getColumn", Null)
    Log("Cell Index:" & cellIndex)
    '
    Dim getSelectedItem As String = JOSelectionModel.RunMethod("getSelectedItem", Array As Object(cellIndex))
    Log(getSelectedItem )
End Sub

 

[Erel]

Note that this feature is already implemented for the next version...

Will probably be released next week.

 

[JEG]

Problems. SelectedRowChanged returns the index but SelectedCellChanged returns nothing. Must something be set?

 

[Erel]

Please start a new thread and post the relevant code.