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.Component;
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7 | import java.awt.event.ActionEvent;
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8 | import java.awt.event.KeyEvent;
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9 | import java.lang.ref.WeakReference;
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10 | import java.util.List;
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11 |
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12 | import javax.swing.AbstractAction;
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13 | import javax.swing.JMenuItem;
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14 |
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15 | import org.openstreetmap.josm.gui.dialogs.IEnabledStateUpdating;
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16 | import org.openstreetmap.josm.gui.dialogs.LayerListDialog;
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17 | import org.openstreetmap.josm.gui.dialogs.LayerListDialog.LayerListModel;
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18 | import org.openstreetmap.josm.gui.help.HelpUtil;
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19 | import org.openstreetmap.josm.gui.layer.Layer;
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20 | import org.openstreetmap.josm.gui.layer.Layer.LayerAction;
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21 | import org.openstreetmap.josm.gui.util.MultikeyShortcutAction;
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22 | import org.openstreetmap.josm.tools.ImageProvider;
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23 | import org.openstreetmap.josm.tools.Shortcut;
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24 |
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25 | /**
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26 | * Action which will toggle the visibility of the currently selected layers.
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27 | */
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28 | public final class ShowHideLayerAction extends AbstractAction implements IEnabledStateUpdating, LayerAction, MultikeyShortcutAction {
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29 |
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30 | private transient WeakReference<Layer> lastLayer;
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31 | private final transient Shortcut multikeyShortcut;
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32 | private final LayerListModel model;
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33 |
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34 | /**
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35 | * Creates a {@link ShowHideLayerAction} which will toggle the visibility of the currently selected layers
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36 | * @param model layer list model
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37 | */
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38 | public ShowHideLayerAction(LayerListModel model) {
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39 | this.model = model;
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40 | putValue(NAME, tr("Show/hide"));
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41 | new ImageProvider("dialogs", "showhide").getResource().attachImageIcon(this, true);
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42 | putValue(SHORT_DESCRIPTION, tr("Toggle visible state of the selected layer."));
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43 | putValue("help", HelpUtil.ht("/Dialog/LayerList#ShowHideLayer"));
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44 | multikeyShortcut = Shortcut.registerShortcut("core_multikey:showHideLayer", tr("Multikey: {0}",
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45 | tr("Show/hide layer")), KeyEvent.VK_S, Shortcut.SHIFT);
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46 | multikeyShortcut.setAccelerator(this);
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47 | updateEnabledState();
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48 | }
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49 |
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50 | @Override
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51 | public Shortcut getMultikeyShortcut() {
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52 | return multikeyShortcut;
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53 | }
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54 |
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55 | @Override
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56 | public void actionPerformed(ActionEvent e) {
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57 | for (Layer l : model.getSelectedLayers()) {
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58 | l.toggleVisible();
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59 | }
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60 | }
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61 |
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62 | @Override
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63 | public void executeMultikeyAction(int index, boolean repeat) {
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64 | Layer l = LayerListDialog.getLayerForIndex(index);
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65 | if (l != null) {
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66 | l.toggleVisible();
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67 | lastLayer = new WeakReference<>(l);
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68 | } else if (repeat && lastLayer != null) {
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69 | l = lastLayer.get();
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70 | if (LayerListDialog.isLayerValid(l)) {
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71 | l.toggleVisible();
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72 | }
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73 | }
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74 | }
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75 |
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76 | @Override
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77 | public void updateEnabledState() {
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78 | setEnabled(!model.getSelectedLayers().isEmpty());
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79 | }
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80 |
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81 | @Override
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82 | public Component createMenuComponent() {
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83 | return new JMenuItem(this);
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84 | }
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85 |
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86 | @Override
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87 | public boolean supportLayers(List<Layer> layers) {
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88 | return true;
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89 | }
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90 |
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91 | @Override
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92 | public boolean equals(Object obj) {
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93 | return obj instanceof ShowHideLayerAction;
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94 | }
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95 |
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96 | @Override
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97 | public int hashCode() {
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98 | return getClass().hashCode();
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99 | }
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100 |
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101 | @Override
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102 | public List<MultikeyInfo> getMultikeyCombinations() {
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103 | return LayerListDialog.getLayerInfoByClass(Layer.class);
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104 | }
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105 |
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106 | @Override
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107 | public MultikeyInfo getLastMultikeyAction() {
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108 | if (lastLayer != null)
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109 | return LayerListDialog.getLayerInfo(lastLayer.get());
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110 | return null;
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111 | }
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112 | }
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