combofield.java

利用 java SWT 实现MVC功能

package ExampleViewer.form;

import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Text;

import ExampleViewer.data.ExampleViewContentProvider;
import ExampleViewer.data.IExampleContentProvider;

public class ComboField extends Field implements IField {
	/**
	 * @param control
	 * @param id
	 */
	public ComboField(Control control, int id) {
		super(control, id);

	}

	/* (non-Javadoc)
	 * @see com.ibm.eworkplaces.pim.ui.docedit.form.IField#getData()
	 */
	public  void readFromContent(IExampleContentProvider content) {
	 	Object data = content.getElement(getId());
		if (data != null) {
			if (_control instanceof Combo){
				((Combo )_control).setItems(ExampleViewContentProvider.getComboItems());
				((Combo )_control).select(((Integer )data).intValue());}
			else if (_control instanceof Text)
				((Text )_control).setText((String )data);
		}		
	}

	/* (non-Javadoc)
	 * @see com.ibm.eworkplaces.pim.ui.docedit.form.IField#setData(java.lang.Object)
	 */
	public void writeToContent(IExampleContentProvider content) {
	 	if (_control instanceof Combo) {
			int iSel = ((Combo )_control).getSelectionIndex();								
			content.setElement(getId(), new Integer(iSel));
		}
	}
}