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 super(tr("Reorder imagery layers"), "dialogs/reorderlayers", tr("Reorders non-overlay imagery layers."), 026 Shortcut.registerMultiShortcuts("imagery:reorder", tr("Reorder imagery layers"), 027 KeyboardUtils.getCharactersForKey('E', 0), Shortcut.DIRECT)); 028 } 029 030 @Override 031 public void actionPerformed(ActionEvent e) { 032 List<ImageryLayer> layers = getNonOverlayImageryLayers().collect(Collectors.toList()); 033 int size = layers.size(); 034 if (size > 1) { 035 // Move the first non-overlay layer at the position of the last non-overlay layer 036 getLayerManager().moveLayer(layers.get(0), 037 getLayerManager().getLayers().indexOf(layers.get(size - 1))); 038 } 039 } 040 041 @Override 042 protected void updateEnabledState() { 043 setEnabled(getNonOverlayImageryLayers().count() > 1); 044 } 045 046 private Stream<ImageryLayer> getNonOverlayImageryLayers() { 047 return getLayerManager().getLayersOfType(ImageryLayer.class).stream() 048 .filter(l -> !l.getInfo().isOverlay()); 049 } 050}