io.mapzone.arena.analytics.graph.ui.FeatureSourceSelectorUI.java Source code

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Here is the source code for io.mapzone.arena.analytics.graph.ui.FeatureSourceSelectorUI.java

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/* 
 * polymap.org
 * Copyright (C) 2016, the @authors. All rights reserved.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 3.0 of
 * the License, or (at your option) any later version.
 *
 * This software 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
 * Lesser General Public License for more details.
 */
package io.mapzone.arena.analytics.graph.ui;

import java.io.IOException;
import java.util.List;
import java.util.function.Consumer;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.geotools.data.FeatureSource;
import org.opengis.feature.type.Name;
import org.polymap.core.ui.StatusDispatcher;
import org.polymap.p4.P4Plugin;
import org.polymap.rhei.batik.toolkit.md.MdToolkit;

/**
 * Draws a combo based view with all known local feature sources.
 *
 * @author Steffen Stundzig
 */
public class FeatureSourceSelectorUI {

    private static Log log = LogFactory.getLog(FeatureSourceSelectorUI.class);

    private final Combo combo;

    public FeatureSourceSelectorUI(final MdToolkit tk, final Composite parent,
            final Consumer<FeatureSource> onSelect) throws IOException {
        this.combo = new Combo(parent, SWT.SINGLE | SWT.BORDER | SWT.DROP_DOWN | SWT.READ_ONLY);

        final List<Name> featureSourceNames = P4Plugin.localCatalog().localFeaturesStore().getNames();
        // final List<String> featureSources = featureSourceNames.stream().map(
        // name -> name.getLocalPart() ).collect( Collectors.toList() );
        combo.setItems(featureSourceNames.stream().map(name -> name.getLocalPart()).toArray(String[]::new));
        combo.addSelectionListener(new SelectionAdapter() {

            @Override
            public void widgetSelected(SelectionEvent e) {
                try {
                    Name featureSourceName = featureSourceNames.get(combo.getSelectionIndex());
                    onSelect.accept(
                            P4Plugin.localCatalog().localFeaturesStore().getFeatureSource(featureSourceName));
                } catch (IOException e1) {
                    StatusDispatcher.handleError("", e1);
                }
            }

        });
    }

    public Control control() {
        return this.combo;
    }
}