1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.actions;
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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.io.IOException;
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9 | import java.util.Collection;
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10 |
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11 | import javax.swing.JOptionPane;
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12 | import javax.swing.SwingUtilities;
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13 |
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14 | import org.openstreetmap.josm.Main;
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15 | import org.openstreetmap.josm.data.osm.DataSet;
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16 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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17 | import org.openstreetmap.josm.data.osm.visitor.MergeVisitor;
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18 | import org.openstreetmap.josm.gui.DefaultNameFormatter;
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19 | import org.openstreetmap.josm.gui.PleaseWaitRunnable;
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20 | import org.openstreetmap.josm.gui.layer.OsmDataLayer;
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21 | import org.openstreetmap.josm.gui.progress.ProgressMonitor;
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22 | import org.openstreetmap.josm.io.OsmApi;
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23 | import org.openstreetmap.josm.io.OsmServerBackreferenceReader;
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24 | import org.openstreetmap.josm.io.OsmTransferException;
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25 | import org.openstreetmap.josm.tools.Shortcut;
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26 | import org.xml.sax.SAXException;
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27 |
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28 | /**
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29 | * This action loads the set of primitives referring to the current selection from the OSM
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30 | * server.
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31 | *
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32 | *
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33 | */
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34 | public class DownloadReferrersAction extends JosmAction{
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35 |
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36 | public DownloadReferrersAction() {
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37 | super(tr("Download referrers from OSM..."), "downloadreferrers", tr("Download primitives referring to one of the selected primitives"),
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38 | Shortcut.registerShortcut("file:downloadreferrers", tr("File: {0}", tr("Download referrers...")), KeyEvent.VK_D, Shortcut.GROUPS_ALT2+Shortcut.GROUP_HOTKEY), true);
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39 | }
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40 |
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41 | /**
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42 | * Downloads the primitives referring to the primitives in <code>primitives</code>.
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43 | * Does nothing if primitives is null or empty.
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44 | *
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45 | * @param primitives the collection of primitives.
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46 | */
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47 | public void downloadReferrers(Collection<OsmPrimitive> primitives) {
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48 | if (primitives == null || primitives.isEmpty()) return;
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49 | Main.worker.submit(new DownloadReferrersTask(primitives));
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50 | }
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51 |
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52 |
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53 | public void actionPerformed(ActionEvent e) {
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54 | if (!isEnabled())
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55 | return;
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56 | OsmDataLayer layer = Main.map.mapView.getEditLayer();
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57 | Collection<OsmPrimitive> primitives = layer.data.getSelected();
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58 | downloadReferrers(primitives);
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59 | }
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60 |
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61 | /**
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62 | * The asynchronous task for downloading referring primitives
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63 | *
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64 | */
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65 | class DownloadReferrersTask extends PleaseWaitRunnable {
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66 | private DataSet ds;
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67 | private boolean cancelled;
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68 | Exception lastException;
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69 | private Collection<OsmPrimitive> primitives;
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70 | private DataSet parents;
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71 |
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72 | public DownloadReferrersTask(Collection<OsmPrimitive> primitives) {
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73 | super("Download referrers", false /* don't ignore exception*/);
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74 | cancelled = false;
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75 | this.primitives = primitives;
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76 | parents = new DataSet();
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77 | }
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78 |
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79 | protected void showLastException() {
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80 | String msg = lastException.getMessage();
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81 | if (msg == null) {
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82 | msg = lastException.toString();
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83 | }
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84 | JOptionPane.showMessageDialog(
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85 | Main.map,
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86 | msg,
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87 | tr("Error"),
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88 | JOptionPane.ERROR_MESSAGE
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89 | );
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90 | }
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91 |
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92 | @Override
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93 | protected void cancel() {
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94 | cancelled = true;
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95 | OsmApi.getOsmApi().cancel();
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96 | }
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97 |
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98 | @Override
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99 | protected void finish() {
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100 | if (cancelled)
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101 | return;
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102 | if (lastException != null) {
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103 | showLastException();
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104 | return;
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105 | }
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106 |
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107 | MergeVisitor visitor = new MergeVisitor(Main.map.mapView.getEditLayer().data, parents);
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108 | visitor.merge();
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109 | SwingUtilities.invokeLater(
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110 | new Runnable() {
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111 | public void run() {
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112 | Main.map.mapView.getEditLayer().fireDataChange();
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113 | Main.map.mapView.repaint();
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114 | }
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115 | }
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116 | );
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117 | if (visitor.getConflicts().isEmpty())
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118 | return;
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119 | Main.map.mapView.getEditLayer().getConflicts().add(visitor.getConflicts());
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120 | JOptionPane.showMessageDialog(
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121 | Main.parent,
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122 | tr("There were {0} conflicts during import.",
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123 | visitor.getConflicts().size()
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124 | ),
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125 | tr("Conflicts during download"),
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126 | JOptionPane.WARNING_MESSAGE
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127 | );
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128 | }
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129 |
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130 | protected void downloadParents(OsmPrimitive primitive, ProgressMonitor progressMonitor) throws OsmTransferException{
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131 | OsmServerBackreferenceReader reader = new OsmServerBackreferenceReader(primitive);
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132 | DataSet ds = reader.parseOsm(progressMonitor);
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133 | MergeVisitor visitor = new MergeVisitor(parents, ds);
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134 | visitor.merge();
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135 | }
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136 |
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137 | @Override
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138 | protected void realRun() throws SAXException, IOException, OsmTransferException {
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139 | try {
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140 | progressMonitor.setTicksCount(primitives.size());
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141 | int i=1;
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142 | for (OsmPrimitive primitive: primitives) {
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143 | if (cancelled)
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144 | return;
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145 | progressMonitor.subTask(tr("({0}/{1}) Loading parents of primitive {2}", i+1,primitives.size(), primitive.getDisplayName(DefaultNameFormatter.getInstance())));
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146 | downloadParents(primitive, progressMonitor.createSubTaskMonitor(1, false));
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147 | i++;
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148 | }
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149 | } catch(Exception e) {
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150 | if (cancelled)
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151 | return;
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152 | lastException = e;
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153 | }
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154 | }
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155 | }
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156 |
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157 | /**
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158 | * Refreshes the enabled state
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159 | *
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160 | */
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161 | @Override
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162 | protected void updateEnabledState() {
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163 | setEnabled(getCurrentDataSet() != null && ! getCurrentDataSet().getSelected().isEmpty());
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164 | }
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165 | }
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