1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.actions.relation;
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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.Rectangle;
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8 | import java.awt.event.ActionEvent;
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9 | import java.awt.event.ActionListener;
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10 | import java.awt.event.KeyEvent;
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11 | import java.util.Collections;
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12 | import java.util.List;
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13 |
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14 | import javax.swing.AbstractAction;
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15 | import javax.swing.JMenuItem;
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16 | import javax.swing.JPopupMenu;
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17 | import javax.swing.KeyStroke;
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18 | import javax.swing.plaf.basic.BasicArrowButton;
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19 |
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20 | import org.openstreetmap.josm.Main;
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21 | import org.openstreetmap.josm.data.osm.Relation;
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22 | import org.openstreetmap.josm.gui.DefaultNameFormatter;
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23 | import org.openstreetmap.josm.gui.SideButton;
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24 | import org.openstreetmap.josm.gui.layer.Layer;
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25 | import org.openstreetmap.josm.gui.layer.LayerManager.LayerAddEvent;
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26 | import org.openstreetmap.josm.gui.layer.LayerManager.LayerChangeListener;
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27 | import org.openstreetmap.josm.gui.layer.LayerManager.LayerOrderChangeEvent;
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28 | import org.openstreetmap.josm.gui.layer.LayerManager.LayerRemoveEvent;
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29 | import org.openstreetmap.josm.gui.layer.MainLayerManager.ActiveLayerChangeEvent;
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30 | import org.openstreetmap.josm.gui.layer.MainLayerManager.ActiveLayerChangeListener;
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31 | import org.openstreetmap.josm.gui.layer.OsmDataLayer;
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32 | import org.openstreetmap.josm.gui.layer.OsmDataLayer.CommandQueueListener;
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33 | import org.openstreetmap.josm.tools.ImageProvider;
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34 | import org.openstreetmap.josm.tools.Shortcut;
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35 |
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36 | /**
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37 | * Action for accessing recent relations.
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38 | */
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39 | public class RecentRelationsAction implements ActionListener, CommandQueueListener, LayerChangeListener, ActiveLayerChangeListener {
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40 |
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41 | private final SideButton editButton;
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42 | private final BasicArrowButton arrow;
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43 | private final Shortcut shortcut;
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44 |
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45 | /**
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46 | * Constructs a new <code>RecentRelationsAction</code>.
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47 | * @param editButton edit button
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48 | */
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49 | public RecentRelationsAction(SideButton editButton) {
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50 | this.editButton = editButton;
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51 | arrow = editButton.createArrow(this);
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52 | arrow.setToolTipText(tr("List of recent relations"));
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53 | Main.main.undoRedo.addCommandQueueListener(this);
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54 | Main.getLayerManager().addLayerChangeListener(this);
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55 | Main.getLayerManager().addActiveLayerChangeListener(this);
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56 | enableArrow();
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57 | shortcut = Shortcut.registerShortcut(
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58 | "relationeditor:editrecentrelation",
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59 | tr("Relation Editor: {0}", tr("Open recent relation")),
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60 | KeyEvent.VK_ESCAPE,
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61 | Shortcut.SHIFT
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62 | );
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63 | Main.registerActionShortcut(new AbstractAction() {
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64 | @Override
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65 | public void actionPerformed(ActionEvent e) {
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66 | EditRelationAction.launchEditor(getLastRelation());
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67 | }
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68 | }, shortcut);
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69 | }
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70 |
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71 | /**
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72 | * Enables arrow button.
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73 | */
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74 | public void enableArrow() {
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75 | arrow.setVisible(getLastRelation() != null);
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76 | }
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77 |
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78 | /**
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79 | * Returns the last relation.
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80 | * @return the last relation
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81 | */
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82 | public static Relation getLastRelation() {
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83 | List<Relation> recentRelations = getRecentRelationsOnActiveLayer();
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84 | if (recentRelations == null || recentRelations.isEmpty())
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85 | return null;
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86 | for (Relation relation: recentRelations) {
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87 | if (!isRelationListable(relation))
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88 | continue;
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89 | return relation;
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90 | }
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91 | return null;
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92 | }
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93 |
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94 | /**
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95 | * Determines if the given relation is listable in last relations.
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96 | * @param relation relation
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97 | * @return {@code true} if relation is non null, not deleted, and in current dataset
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98 | */
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99 | public static boolean isRelationListable(Relation relation) {
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100 | return relation != null &&
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101 | !relation.isDeleted() &&
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102 | Main.getLayerManager().getEditDataSet().containsRelation(relation);
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103 | }
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104 |
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105 | @Override
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106 | public void actionPerformed(ActionEvent e) {
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107 | RecentRelationsPopupMenu.launch(editButton, shortcut.getKeyStroke());
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108 | }
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109 |
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110 | @Override
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111 | public void commandChanged(int queueSize, int redoSize) {
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112 | enableArrow();
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113 | }
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114 |
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115 | @Override
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116 | public void layerAdded(LayerAddEvent e) {
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117 | enableArrow();
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118 | }
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119 |
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120 | @Override
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121 | public void layerRemoving(LayerRemoveEvent e) {
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122 | enableArrow();
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123 | }
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124 |
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125 | @Override
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126 | public void layerOrderChanged(LayerOrderChangeEvent e) {
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127 | enableArrow();
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128 | }
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129 |
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130 | @Override
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131 | public void activeOrEditLayerChanged(ActiveLayerChangeEvent e) {
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132 | enableArrow();
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133 | }
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134 |
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135 | /**
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136 | * Returns the list of recent relations on active layer.
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137 | * @return the list of recent relations on active layer
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138 | */
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139 | public static List<Relation> getRecentRelationsOnActiveLayer() {
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140 | if (!Main.isDisplayingMapView())
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141 | return Collections.emptyList();
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142 | Layer activeLayer = Main.getLayerManager().getActiveLayer();
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143 | if (!(activeLayer instanceof OsmDataLayer)) {
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144 | return Collections.emptyList();
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145 | } else {
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146 | return ((OsmDataLayer) activeLayer).getRecentRelations();
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147 | }
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148 | }
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149 |
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150 | protected static class RecentRelationsPopupMenu extends JPopupMenu {
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151 | /**
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152 | * Constructs a new {@code RecentRelationsPopupMenu}.
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153 | * @param recentRelations list of recent relations
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154 | * @param keystroke key stroke for the first menu item
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155 | */
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156 | public RecentRelationsPopupMenu(List<Relation> recentRelations, KeyStroke keystroke) {
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157 | boolean first = true;
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158 | for (Relation relation: recentRelations) {
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159 | if (!isRelationListable(relation))
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160 | continue;
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161 | JMenuItem menuItem = new RecentRelationsMenuItem(relation);
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162 | if (first) {
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163 | menuItem.setAccelerator(keystroke);
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164 | first = false;
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165 | }
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166 | menuItem.setIcon(ImageProvider.getPadded(relation, ImageProvider.ImageSizes.MENU.getImageDimension()));
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167 | add(menuItem);
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168 | }
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169 | }
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170 |
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171 | protected static void launch(Component parent, KeyStroke keystroke) {
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172 | Rectangle r = parent.getBounds();
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173 | new RecentRelationsPopupMenu(getRecentRelationsOnActiveLayer(), keystroke).show(parent, r.x, r.y + r.height);
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174 | }
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175 | }
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176 |
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177 | /**
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178 | * A specialized {@link JMenuItem} for presenting one entry of the relation history
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179 | */
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180 | protected static class RecentRelationsMenuItem extends JMenuItem implements ActionListener {
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181 | protected final transient Relation relation;
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182 |
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183 | public RecentRelationsMenuItem(Relation relation) {
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184 | super(relation.getDisplayName(DefaultNameFormatter.getInstance()));
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185 | this.relation = relation;
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186 | addActionListener(this);
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187 | }
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188 |
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189 | @Override
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190 | public void actionPerformed(ActionEvent e) {
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191 | EditRelationAction.launchEditor(relation);
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192 | }
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193 | }
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194 |
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195 | }
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