com.bdaum.zoom.ui.internal.actions.ProximityAction.java Source code

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Here is the source code for com.bdaum.zoom.ui.internal.actions.ProximityAction.java

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/*
 * This file is part of the ZoRa project: http://www.photozora.org.
 *
 * ZoRa 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 2 of the License, or
 * (at your option) any later version.
 *
 * ZoRa 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 ZoRa; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * (c) 2009 Berthold Daum  
 */

package com.bdaum.zoom.ui.internal.actions;

import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IWorkbenchWindow;

import com.bdaum.zoom.cat.model.asset.Asset;
import com.bdaum.zoom.cat.model.asset.AssetImpl;
import com.bdaum.zoom.cat.model.group.CriterionImpl;
import com.bdaum.zoom.cat.model.group.SmartCollectionImpl;
import com.bdaum.zoom.cat.model.group.SortCriterionImpl;
import com.bdaum.zoom.core.Constants;
import com.bdaum.zoom.core.Core;
import com.bdaum.zoom.core.QueryField;
import com.bdaum.zoom.ui.AssetSelection;
import com.bdaum.zoom.ui.Ui;
import com.bdaum.zoom.ui.dialogs.AcousticMessageDialog;
import com.bdaum.zoom.ui.internal.dialogs.ProximityDialog;

public class ProximityAction extends Action {
    protected static final AssetImpl[] NOASSETS = new AssetImpl[0];

    private final IAdaptable adaptable;

    private Shell shell;

    public ProximityAction(String label, String tooltip, ImageDescriptor image, IAdaptable adaptable) {
        super(label, image);
        this.adaptable = adaptable;
        shell = adaptable.getAdapter(Shell.class);
        setToolTipText(tooltip);
    }

    @Override
    public void run() {
        AssetSelection selection = adaptable.getAdapter(AssetSelection.class);
        double lat = 0;
        double lon = 0;
        int n = 0;
        for (Asset asset : selection)
            if (!Double.isNaN(asset.getGPSLatitude()) && !Double.isNaN(asset.getGPSLongitude())) {
                lat += asset.getGPSLatitude();
                double longitude = asset.getGPSLongitude();
                if (lon < 0 && longitude > 0)
                    longitude -= 360;
                else if (lon > 0 && longitude < 0)
                    longitude += 360;
                lon += longitude;
                n++;
            }
        if (n == 0) {
            AcousticMessageDialog.openInformation(shell, Messages.ProximityAction_proximity_search,
                    Messages.ProximityAction_no_geotagged_image);
            return;
        }
        ProximityDialog dialog = new ProximityDialog(shell);
        if (dialog.open() == Window.OK) {
            double distance = dialog.getResult();
            lat /= n;
            lon /= n;
            double mx = 0;
            char unit = Core.getCore().getDbFactory().getDistanceUnit();
            for (Asset asset : selection)
                if (!Double.isNaN(asset.getGPSLatitude()) && !Double.isNaN(asset.getGPSLongitude()))
                    mx = Math.max(mx,
                            Core.distance(lat, lon, asset.getGPSLatitude(), asset.getGPSLongitude(), unit));
            Object[] values = new Object[] { lat, lon, (distance + mx), unit };
            SmartCollectionImpl coll = new SmartCollectionImpl(Messages.ProximityAction_proximity_search, false,
                    false, true, dialog.isNetworked(), null, 0, null, 0, null, Constants.INHERIT_LABEL, null, 0,
                    null);
            coll.addCriterion(new CriterionImpl(QueryField.EXIF_GPSLOCATIONDISTANCE.getKey(), null, values,
                    QueryField.NOTGREATER, false));
            coll.addSortCriterion(new SortCriterionImpl(QueryField.EXIF_GPSLOCATIONDISTANCE.getKey(), null, false));
            coll.setSmartCollection_subSelection_parent(dialog.getParentCollection());
            Ui.getUi().getNavigationHistory(adaptable.getAdapter(IWorkbenchWindow.class))
                    .postSelection(new StructuredSelection(coll));
        }
    }

}