// License: GPL. For details, see LICENSE file.
package org.openstreetmap.josm.gui.layer.geoimage;
import static org.openstreetmap.josm.tools.I18n.tr;
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.util.List;
import javax.swing.AbstractAction;
import javax.swing.JCheckBoxMenuItem;
import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.gui.layer.Layer;
import org.openstreetmap.josm.gui.layer.Layer.LayerAction;
import org.openstreetmap.josm.tools.ImageProvider;
/**
* Toggle the image display between thumbnails and symbols.
* @since 7935
*/
public class ShowThumbnailAction extends AbstractAction implements LayerAction {
private final transient GeoImageLayer layer;
/**
* Constructs a new {@code ToggleGeoImageThumbAction} action.
* @param layer image layer
*/
public ShowThumbnailAction(GeoImageLayer layer) {
super(tr("Show thumbnails"), ImageProvider.get("dialogs/geoimage/togglegit"));
putValue(SHORT_DESCRIPTION, tr("Show image thumbnails instead of icons."));
this.layer = layer;
}
/**
* This is called after the menu entry was selected.
* @param e action event
*/
@Override
public void actionPerformed(ActionEvent e) {
layer.setUseThumbs(!layer.isUseThumbs());
Main.map.mapView.repaint();
}
/**
* Check if there is any suitable image to be toggled.
* @param layer image layer
* @return {@code true} if there are images to be toggled,
* {@code false} otherwise
*/
private static boolean enabled(GeoImageLayer layer) {
return layer.data != null && !layer.data.isEmpty();
}
/** Create actual menu entry and define if it is enabled or not. */
@Override
public Component createMenuComponent() {
JCheckBoxMenuItem toggleItem = new JCheckBoxMenuItem(this);
toggleItem.setEnabled(enabled(layer));
toggleItem.setState(layer.isUseThumbs());
return toggleItem;
}
/** Check if the current layer is supported. */
@Override
public boolean supportLayers(List<Layer> layers) {
return layers.size() == 1 && layers.get(0) instanceof GeoImageLayer;
}
}