SearchTriggerFieldCell.java

package com.rhem.client.widget;

import java.text.ParseException;

import com.google.gwt.core.client.GWT;
import com.sencha.gxt.cell.core.client.form.TriggerFieldCell;
import com.sencha.gxt.data.shared.LabelProvider;
import com.sencha.gxt.widget.core.client.form.PropertyEditor;

public class SearchTriggerFieldCell<T> extends TriggerFieldCell<T> {

  public interface SearchTriggerFieldAppearance extends TriggerFieldAppearance {

	}
	
	private class MyPropertyEditor extends PropertyEditor<T>{

		@Override
		public String render(T object) {//convert object to text
			if (object == null) {
		        return "";
		      }
		      LabelProvider<? super T> provider = getLabelProvider();
		      return provider == null ? object.toString() : provider.getLabel(object);
		}

		@Override
		public T parse(CharSequence text) throws ParseException {//convert text to object
			//not implemented yet
			return null;
		}
		
	}
	
	private final LabelProvider<? super T> labelProvider;
	
	public SearchTriggerFieldCell(LabelProvider<? super T> labelProvider){
		this(labelProvider, GWT.<SearchTriggerFieldAppearance> create(SearchTriggerFieldAppearance.class));
	}
	
	public SearchTriggerFieldCell(LabelProvider<? super T> labelProvider, SearchTriggerFieldAppearance appearance){
		super(appearance);
	    this.labelProvider = labelProvider;
	    setPropertyEditor(new MyPropertyEditor());
	}
	
	public LabelProvider<? super T> getLabelProvider() {
		return labelProvider;
	}
	
}