org.goko.common.elements.combo.v2.GkCombo2.java Source code

Introduction

Here is the source code for org.goko.common.elements.combo.v2.GkCombo2.java

Source

/*******************************************************************************
 *    This file is part of Goko.
 *
 *   Goko is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   Goko is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with Goko.  If not, see <http://www.gnu.org/licenses/>.
 *******************************************************************************/
package org.goko.common.elements.combo.v2;

import java.util.List;

import org.eclipse.jface.viewers.ComboViewer;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.widgets.Composite;
import org.goko.common.GkUiUtils;
import org.goko.common.elements.combo.LabeledValue;
import org.goko.core.common.exception.GkException;
import org.goko.core.log.GkLog;

public class GkCombo2<T> extends ComboViewer {
    private static final GkLog LOG = GkLog.getLogger(GkCombo2.class);

    public GkCombo2(Composite parent, int style) {
        super(parent, style);

        setContentProvider(new GkComboContentProvider());
        setLabelProvider(new GkComboLabelProvider<T>(this));
    }

    /**
     * @return the choices
     */
    public List<LabeledValue<T>> getChoices() {
        return (List<LabeledValue<T>>) getInput();
    }

    @Override
    public void setSelection(ISelection selection) {
        if (!selection.isEmpty()) {
            T val = (T) ((IStructuredSelection) selection).getFirstElement();
            try {
                LabeledValue<T> lVal = GkUiUtils.getLabelledValueByKey(val, getChoices());
                super.setSelection(new StructuredSelection(lVal));
            } catch (GkException e) {
                LOG.error(e);
            }

        }
    }

    /** (inheritDoc)
     * @see org.eclipse.jface.viewers.StructuredViewer#setSelection(org.eclipse.jface.viewers.ISelection, boolean)
     */
    @Override
    public void setSelection(ISelection selection, boolean reveal) {
        if (!selection.isEmpty()) {
            T val = (T) ((IStructuredSelection) selection).getFirstElement();
            try {
                LabeledValue<T> lVal = GkUiUtils.getLabelledValueByKey(val, getChoices());
                super.setSelection(new StructuredSelection(lVal), reveal);
            } catch (GkException e) {
                LOG.error(e);
            }
        }
        super.setSelection(selection, reveal);
    }

    @Override
    public ISelection getSelection() {
        IStructuredSelection selection = (IStructuredSelection) super.getSelection();
        LabeledValue<?> firstElement = (LabeledValue<?>) selection.getFirstElement();
        if (firstElement != null) {
            return new StructuredSelection(firstElement.getValue());
        } else {
            return new StructuredSelection();
        }
    }

}