001// License: GPL. For details, see LICENSE file. 002package org.openstreetmap.josm.actions; 003 004import static org.openstreetmap.josm.tools.I18n.tr; 005 006import java.awt.event.ActionEvent; 007import java.util.List; 008import java.util.stream.Collectors; 009import java.util.stream.Stream; 010 011import org.openstreetmap.josm.gui.layer.ImageryLayer; 012import org.openstreetmap.josm.tools.KeyboardUtils; 013import org.openstreetmap.josm.tools.Shortcut; 014 015/** 016 * Reorders all non-overlay imagery layers in a cyclic manner. 017 * @since 13891 018 */ 019public class ReorderImageryLayersAction extends JosmAction { 020 021 /** 022 * Constructs a new {@code ReorderImageryLayersAction}. 023 */ 024 public ReorderImageryLayersAction() { 025 // TODO: find a suitable icon 026 super(tr("Reorder imagery layers"), "dialogs/layerlist", tr("Reorders non-overlay imagery layers."), 027 Shortcut.registerMultiShortcuts("imagery:reorder", tr("Reorder imagery layers"), 028 KeyboardUtils.getCharactersForKey('E', 0), Shortcut.DIRECT)); 029 } 030 031 @Override 032 public void actionPerformed(ActionEvent e) { 033 List<ImageryLayer> layers = getNonOverlayImageryLayers().collect(Collectors.toList()); 034 int size = layers.size(); 035 if (size > 1) { 036 // Move the first non-overlay layer at the position of the last non-overlay layer 037 getLayerManager().moveLayer(layers.get(0), 038 getLayerManager().getLayers().indexOf(layers.get(size - 1))); 039 } 040 } 041 042 @Override 043 protected void updateEnabledState() { 044 setEnabled(getNonOverlayImageryLayers().count() > 1); 045 } 046 047 private Stream<ImageryLayer> getNonOverlayImageryLayers() { 048 return getLayerManager().getLayersOfType(ImageryLayer.class).stream() 049 .filter(l -> !l.getInfo().isOverlay()); 050 } 051}