| 1 | // License: GPL. For details, see LICENSE file.
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| 2 | package org.openstreetmap.josm.gui.dialogs.layer;
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| 3 |
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| 4 | import static org.openstreetmap.josm.tools.I18n.tr;
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| 5 |
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| 6 | import java.awt.event.ActionEvent;
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| 7 | import java.awt.event.KeyEvent;
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| 8 | import java.util.List;
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| 9 | import java.util.stream.Collectors;
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| 10 |
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| 11 | import org.openstreetmap.josm.actions.JosmAction;
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| 12 | import org.openstreetmap.josm.gui.MainApplication;
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| 13 | import org.openstreetmap.josm.gui.layer.ImageryLayer;
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| 14 | import org.openstreetmap.josm.gui.layer.Layer;
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| 15 | import org.openstreetmap.josm.gui.layer.MainLayerManager;
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| 16 | import org.openstreetmap.josm.tools.ImageProvider;
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| 17 | import org.openstreetmap.josm.tools.Shortcut;
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| 18 |
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| 19 | /**
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| 20 | * Allow users to cycle between adjacent layers easily
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| 21 | *
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| 22 | * @author Taylor Smock
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| 23 | * @since 15923
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| 24 | */
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| 25 | public class CycleLayerUpAction extends JosmAction {
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| 26 | private static final long serialVersionUID = 1L;
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| 27 | private static final Shortcut cycleUp =
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| 28 | Shortcut.registerShortcut("core:cyclelayerup", tr("Cycle layer up"), KeyEvent.VK_OPEN_BRACKET, Shortcut.SHIFT);
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| 29 |
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| 30 | /**
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| 31 | * Create a CycleLayerDownAction that cycles through layers that are in the model
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| 32 | */
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| 33 | public CycleLayerUpAction() {
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| 34 | super(tr("Cycle layer up"), "dialogs/next", tr("Cycle through data layers in an upward direction"),
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| 35 | cycleUp, true, "cycle-layer-up", false);
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| 36 | new ImageProvider("dialogs", "next").getResource().attachImageIcon(this, true);
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| 37 | putValue(SHORT_DESCRIPTION, tr("Cycle through visible layers."));
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| 38 | putValue(NAME, tr("Cycle layers"));
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| 39 | }
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| 40 |
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| 41 | @Override
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| 42 | public void actionPerformed(ActionEvent e) {
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| 43 | MainLayerManager manager = MainApplication.getLayerManager();
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| 44 | List<Layer> managerLayers = manager.getLayers().stream().filter(layer -> !(layer instanceof ImageryLayer))
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| 45 | .collect(Collectors.toList());
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| 46 | if (managerLayers.isEmpty()) {
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| 47 | return;
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| 48 | }
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| 49 | int index = managerLayers.indexOf(manager.getActiveLayer());
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| 50 | int sublist = index < managerLayers.size() ? index + 1 : index;
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| 51 | if (index >= managerLayers.size() - 1) {
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| 52 | sublist = 0;
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| 53 | }
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| 54 | List<Layer> layers = managerLayers.subList(sublist, managerLayers.size());
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| 55 | manager.setActiveLayer(layers.stream().filter(Layer::isVisible).filter(tlayer -> !(tlayer instanceof ImageryLayer))
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| 56 | .findFirst().orElse(manager.getActiveLayer()));
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| 57 | }
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| 58 | }
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