SwingBuilder Series: Table (II) : A Simple CellRenderer

This time I'm gonna improve a little bit my table. I want the boolean values to have a specific background depending on its value: green for true and red for false.

First of all here I need some imports:

import java.awt.*
import javax.swing.table.*
import javax.swing.*

Now my Event object has one more property to tell me whether the event is still running or it's over. To do this job I'm gonna create a renderer for the alive property.

  class BooleanRenderer extends DefaultTableCellRenderer{
Component getTableCellRendererComponent(
 JTable table, Object value,boolean isSelected, boolean hasFocus, int row, int column) {
     def label = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column)
  label.background = value ? java.awt.Color.GREEN : java.awt.Color.RED
  label
 }
}

This render is pretty basic, it only gets the default
component which is a JLabel and then it turns it g

reen when the value is true and red when the value is false. To do it perfect, the method has to take into account a few things more (isSelected, hasFocus).

The rest is almost the same thing, the node compo

nents:

panel{
 vbox{
    panel{
      gridLayout(rows:6,columns:1)  
      label("Title")
      textField(id:'title',action:addAction)
      label("Speaker Name")
      textField(id:'speakerName',action:addAction)
      hbox{   label("Alive ?")
      checkBox(id:'alive')
     }        
     button(id:'add',action:addAction)  
    }
    scrollPane{
       table(id:'eventsTable'){
          tableModel{    
              propertyColumn(header: "Event Title" ,propertyName: 'title')
              propertyColumn(header: "Speaker Name" ,propertyName: 'speakerName')
              propertyColumn(
                      header: "Alive ?" ,
                      propertyName: 'alive',
                      cellRenderer: new BooleanRenderer()
             )
           }
       }  
 }
}
}

And the action to add each event.

def addAction = action(
    id:'add',
    name:'Add to Table',
    closure:{
           eventsTable.model.with{  rowsModel.value.add(
              new Event(
                 title:title.text,
                 speakerName:speakerName.text,
                 alive: alive.selected
               )
            )
            fireTableDataChanged()
     }
}
)

And voila: