Groovy SwingBuilder bind to multiple properties

问题

Is there a way to bind a properties to multiple properties of another object using the SwingBuilder? For example, I want to bind a button's enabled property to two text fields - the button is only enabled when both text fields are non empty.

回答1:

You can do this sort of thing:

import groovy.beans.Bindable
import groovy.swing.SwingBuilder
import javax.swing.WindowConstants as WC

class CombinedModel {
  @Bindable String text1
  @Bindable String text2
}

def model = new CombinedModel()

SwingBuilder.build() {
    frame(title:'Multiple Bind Test', pack:true, visible: true, defaultCloseOperation:WC.EXIT_ON_CLOSE ) {
        gridLayout(cols: 2, rows: 0)

        label 'Input text 1: '
        textField( columns:10, id:'fielda' )

        label 'Input text 2: '
        textField( columns:10, id:'fieldb' )

        // Bind our two textFields to our model
        bean( model, text1: bind{ fielda.text } )
        bean( model, text2: bind{ fieldb.text } )

        label 'Button: '
        button( text:'Button', enabled: bind { model.text1 && model.text2 } )
    }
}

As you can see, that binds two textfields to fields in our model, then binds enabled for the button to be true if both text1 and text2 are non-empty

来源：https://stackoverflow.com/questions/6349107/groovy-swingbuilder-bind-to-multiple-properties