AutocompleteCombo.java

/*******************************************************************************
 * Copyright (c) 2011 Softberries Krzysztof Grajek.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     Softberries Krzysztof Grajek - initial API and implementation
 ******************************************************************************/
package net.sf.swtaddons.autocomplete.combo;

import net.sf.swtaddons.autocomplete.AutocompleteWidget;

import org.eclipse.jface.fieldassist.ComboContentAdapter;
import org.eclipse.jface.fieldassist.ContentProposalAdapter;
import org.eclipse.swt.events.FocusEvent;
import org.eclipse.swt.events.FocusListener;
import org.eclipse.swt.widgets.Combo;

public abstract class AutocompleteCombo extends AutocompleteWidget {
	
	private final class ProposalUpdateFocusListener implements FocusListener {
		@Override
		public void focusGained(FocusEvent e) {
			provider.setProposals(combo.getItems());
		}

		@Override
		public void focusLost(FocusEvent e) {
			// do nothing
		}
	}

	protected Combo combo = null;
	
	public AutocompleteCombo(Combo aCombo) {
		this.combo = aCombo;
		
		if (combo != null) {
			this.combo.addFocusListener(new ProposalUpdateFocusListener());
		
			provider = getContentProposalProvider(combo.getItems());
			adapter = new ContentProposalAdapter(combo, new ComboContentAdapter(), provider, getActivationKeystroke(), getAutoactivationChars());
			adapter.setProposalAcceptanceStyle(ContentProposalAdapter.PROPOSAL_REPLACE);
		}
	}

}