Programmazione:Java/Eclipse RCP/Model databinding

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Per poter collegare il modello all'interfaccia grafica bisogna prima di tutto inserire tra le dipendenze i plugin:

• org.eclipse.core.databinding
• org.eclipse.core.databinding.beans
• org.eclipse.jface.databinding

import org.eclipse.core.databinding.DataBindingContext; import org.eclipse.core.databinding.beans.BeansObservables; import org.eclipse.core.databinding.observable.value.IObservableValue; import org.eclipse.jface.databinding.swt.SWTObservables; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Text;

public class TestBinding extends WizardPage {

  public class Model {
     String value;
     public void setValue(String s) { value = s; }
     public String setValue() { return value; }
  }

  private Model model = new Model();
  private DataBindingContext dbc;

  public TestBinding(String pageName, String title, ImageDescriptor titleImage) {
     super(pageName, title, titleImage);
     dbc = new DataBindingContext();
  }

  public TestBinding(String pageName) {
     super(pageName);
     dbc = new DataBindingContext();
  }

  public void createControl(Composite parent) {
     Composite ctrl= new Composite(parent, SWT.BORDER);
     setControl(ctrl);

     Text test_binding = new Text(ctrl, SWT.NONE);

     IObservableValue modelObservable = BeansObservables.observeValue(model, "value");
     dbc.bindValue(SWTObservables.observeText(test_binding, SWT.Modify), modelObservable, null, null);
  }

}