Re: [Fxruby-users] FXTable manipulation

[Lyle J. <jl...@cf...>]

Tom wrote:

> I'm a newbie to fox and FXRuby.  I have 3 table problems I can't solve:
> 
> 1.) I'd like to turn off the ability to select particular cells, ie the 
> equivalent of FXTableItem.disable(). I attempt to use "disable" but keep 
> getting the error that it's an unknown method.

There's no direct way to disable table items, but you can intercept the 
SEL_LEFTBUTTONPRESS and SEL_LEFTBUTTONRELEASE messages that the FXTable 
sends to its target in order to ignore mouse clicks on certain cells, e.g.

     # Catch left-button press from table
     @table.connect(SEL_LEFTBUTTONPRESS) do |sender, sel, event|
       # Get row and column for clicked cell
       row = @table.rowAtY(event.win_y)
       col = @table.colAtX(event.win_x)

       # If this cell is enabled, return zero (i.e. have the
       # block evaluate to zero) so that the table's normal
       # processing of the left-button press event will kick in.
       # If this cell is disabled, return non-zero to indicate
       # that we've completely handled the event; in this case,
       # the cell shouldn't get "selected".
       #
       result = tableItemEnabled(row, col) ? 0 : 1
     end

     # Catch left-button release from table
     @table.connect(SEL_LEFTBUTTONRELEASE) do |sender, sel, event|
       # Get row and column for clicked cell
       row = @table.rowAtY(event.win_y)
       col = @table.colAtX(event.win_x)

       # If this cell is enabled, return zero (i.e. have the
       # block evaluate to zero) so that the table's normal
       # processing of the left-button press event will kick in.
       # If this cell is disabled, return non-zero to indicate
       # that we've completely handled the event; in this case,
       # the cell shouldn't get "selected".
       #
       result = tableItemEnabled(row, col) ? 0 : 1
     end

> 2.)I'd also to make it so that a click on any cell in a row selects that 
> entire row.

Something like this should work:

     @table.connect(SEL_COMMAND) do |sender, sel, tablePos|
       @table.setAnchorItem(tablePos.row, 0)
       @table.extendSelection(tablePos.row, @table.numCols-1, true)
     end

> 3.)  I can't seem to figure out how to tell a particular FXTableItem how 
> to respond to events.  What I have is a table, and several buttons 
> outside of the table.  When the user dbl-clicks a cell, I want it to be 
> the same thing as selecting a particular cell and hitting my "edit" button.

Something like this should work:

     @table.connect(SEL_DOUBLECLICKED) do |sender, sel, tablePos|
       editThisCell(tablePos.row, tablePos.col)
     end

Hope this helps,

Lyle