com.rcpcompany.uibindings.internal.observables.ComboObservableList.java Source code

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Here is the source code for com.rcpcompany.uibindings.internal.observables.ComboObservableList.java

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/*******************************************************************************
 * Copyright (c) 2006-2013 The RCP Company and others.
 * 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:
 *     The RCP Company - initial API and implementation
 *******************************************************************************/
package com.rcpcompany.uibindings.internal.observables;

import org.eclipse.jface.databinding.swt.SWTObservables;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;

import com.rcpcompany.utils.logging.LogUtils;

/**
 * 
 */
public class ComboObservableList extends MySWTObservableList {

    private final Combo combo;

    /**
     * Constructs and returns a new obserable list for the specified combo.
     * 
     * @param combo the combo of the list
     */
    public ComboObservableList(Combo combo) {
        super(SWTObservables.getRealm(combo.getDisplay()));
        this.combo = combo;

        init();
    }

    @Override
    protected void setItems(String[] newItems) {
        try {
            combo.getDisplay().addFilter(SWT.Modify, myModifyFilter);
            final String text = combo.getText();
            combo.setItems(newItems);
            combo.setText(text);
        } catch (final Exception ex) {
            LogUtils.error(this, ex);
        } finally {
            combo.getDisplay().removeFilter(SWT.Modify, myModifyFilter);
        }
    }

    @Override
    protected String[] getItems() {
        return combo.getItems();
    }

    private final Listener myModifyFilter = new Listener() {
        @Override
        public void handleEvent(Event event) {
            if (event.type == SWT.Modify) {
                event.type = SWT.None;
            }
        }
    };
}