1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.gui.dialogs.relation;
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3 |
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4 | import static org.openstreetmap.josm.tools.I18n.tr;
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5 | import static org.openstreetmap.josm.tools.I18n.trn;
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6 |
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7 | import java.awt.BorderLayout;
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8 | import java.awt.Component;
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9 | import java.awt.Dialog;
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10 | import java.awt.FlowLayout;
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11 | import java.awt.event.ActionEvent;
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12 | import java.io.IOException;
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13 | import java.net.HttpURLConnection;
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14 | import java.util.HashSet;
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15 | import java.util.Iterator;
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16 | import java.util.List;
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17 | import java.util.Set;
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18 | import java.util.Stack;
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19 |
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20 | import javax.swing.AbstractAction;
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21 | import javax.swing.JButton;
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22 | import javax.swing.JOptionPane;
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23 | import javax.swing.JPanel;
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24 | import javax.swing.JScrollPane;
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25 | import javax.swing.SwingUtilities;
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26 | import javax.swing.event.TreeSelectionEvent;
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27 | import javax.swing.event.TreeSelectionListener;
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28 | import javax.swing.tree.TreePath;
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29 |
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30 | import org.openstreetmap.josm.Main;
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31 | import org.openstreetmap.josm.data.osm.DataSet;
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32 | import org.openstreetmap.josm.data.osm.DataSetMerger;
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33 | import org.openstreetmap.josm.data.osm.OsmPrimitiveType;
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34 | import org.openstreetmap.josm.data.osm.Relation;
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35 | import org.openstreetmap.josm.data.osm.RelationMember;
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36 | import org.openstreetmap.josm.gui.DefaultNameFormatter;
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37 | import org.openstreetmap.josm.gui.ExceptionDialogUtil;
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38 | import org.openstreetmap.josm.gui.PleaseWaitRunnable;
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39 | import org.openstreetmap.josm.gui.layer.OsmDataLayer;
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40 | import org.openstreetmap.josm.gui.progress.PleaseWaitProgressMonitor;
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41 | import org.openstreetmap.josm.gui.progress.ProgressMonitor;
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42 | import org.openstreetmap.josm.io.OsmApi;
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43 | import org.openstreetmap.josm.io.OsmApiException;
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44 | import org.openstreetmap.josm.io.OsmServerObjectReader;
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45 | import org.openstreetmap.josm.io.OsmTransferException;
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46 | import org.openstreetmap.josm.tools.CheckParameterUtil;
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47 | import org.openstreetmap.josm.tools.ImageProvider;
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48 | import org.xml.sax.SAXException;
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49 |
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50 | /**
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51 | * ChildRelationBrowser is a UI component which provides a tree-like view on the hierarchical
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52 | * structure of relations.
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53 | *
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54 | * @since 1828
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55 | */
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56 | public class ChildRelationBrowser extends JPanel {
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57 | /** the tree with relation children */
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58 | private RelationTree childTree;
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59 | /** the tree model */
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60 | private transient RelationTreeModel model;
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61 |
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62 | /** the osm data layer this browser is related to */
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63 | private transient OsmDataLayer layer;
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64 |
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65 | /**
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66 | * Replies the {@link OsmDataLayer} this editor is related to
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67 | *
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68 | * @return the osm data layer
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69 | */
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70 | protected OsmDataLayer getLayer() {
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71 | return layer;
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72 | }
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73 |
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74 | /**
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75 | * builds the UI
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76 | */
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77 | protected void build() {
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78 | setLayout(new BorderLayout());
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79 | childTree = new RelationTree(model);
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80 | JScrollPane pane = new JScrollPane(childTree);
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81 | add(pane, BorderLayout.CENTER);
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82 |
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83 | add(buildButtonPanel(), BorderLayout.SOUTH);
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84 | }
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85 |
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86 | /**
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87 | * builds the panel with the command buttons
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88 | *
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89 | * @return the button panel
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90 | */
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91 | protected JPanel buildButtonPanel() {
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92 | JPanel pnl = new JPanel();
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93 | pnl.setLayout(new FlowLayout(FlowLayout.LEFT));
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94 |
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95 | // ---
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96 | DownloadAllChildRelationsAction downloadAction = new DownloadAllChildRelationsAction();
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97 | pnl.add(new JButton(downloadAction));
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98 |
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99 | // ---
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100 | DownloadSelectedAction downloadSelectedAction = new DownloadSelectedAction();
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101 | childTree.addTreeSelectionListener(downloadSelectedAction);
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102 | pnl.add(new JButton(downloadSelectedAction));
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103 |
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104 | // ---
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105 | EditAction editAction = new EditAction();
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106 | childTree.addTreeSelectionListener(editAction);
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107 | pnl.add(new JButton(editAction));
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108 |
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109 | return pnl;
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110 | }
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111 |
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112 | /**
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113 | * constructor
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114 | *
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115 | * @param layer the {@link OsmDataLayer} this browser is related to. Must not be null.
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116 | * @throws IllegalArgumentException if layer is null
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117 | */
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118 | public ChildRelationBrowser(OsmDataLayer layer) {
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119 | CheckParameterUtil.ensureParameterNotNull(layer, "layer");
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120 | this.layer = layer;
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121 | model = new RelationTreeModel();
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122 | build();
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123 | }
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124 |
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125 | /**
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126 | * constructor
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127 | *
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128 | * @param layer the {@link OsmDataLayer} this browser is related to. Must not be null.
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129 | * @param root the root relation
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130 | * @throws IllegalArgumentException if layer is null
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131 | */
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132 | public ChildRelationBrowser(OsmDataLayer layer, Relation root) {
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133 | this(layer);
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134 | populate(root);
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135 | }
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136 |
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137 | /**
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138 | * populates the browser with a relation
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139 | *
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140 | * @param r the relation
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141 | */
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142 | public void populate(Relation r) {
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143 | model.populate(r);
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144 | }
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145 |
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146 | /**
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147 | * populates the browser with a list of relation members
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148 | *
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149 | * @param members the list of relation members
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150 | */
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151 |
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152 | public void populate(List<RelationMember> members) {
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153 | model.populate(members);
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154 | }
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155 |
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156 | /**
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157 | * replies the parent dialog this browser is embedded in
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158 | *
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159 | * @return the parent dialog; null, if there is no {@link Dialog} as parent dialog
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160 | */
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161 | protected Dialog getParentDialog() {
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162 | Component c = this;
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163 | while (c != null && !(c instanceof Dialog)) {
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164 | c = c.getParent();
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165 | }
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166 | return (Dialog) c;
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167 | }
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168 |
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169 | /**
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170 | * Action for editing the currently selected relation
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171 | *
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172 | *
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173 | */
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174 | class EditAction extends AbstractAction implements TreeSelectionListener {
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175 | EditAction() {
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176 | putValue(SHORT_DESCRIPTION, tr("Edit the relation the currently selected relation member refers to."));
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177 | putValue(SMALL_ICON, ImageProvider.get("dialogs", "edit"));
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178 | putValue(NAME, tr("Edit"));
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179 | refreshEnabled();
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180 | }
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181 |
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182 | protected void refreshEnabled() {
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183 | TreePath[] selection = childTree.getSelectionPaths();
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184 | setEnabled(selection != null && selection.length > 0);
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185 | }
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186 |
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187 | public void run() {
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188 | TreePath[] selection = childTree.getSelectionPaths();
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189 | if (selection == null || selection.length == 0) return;
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190 | // do not launch more than 10 relation editors in parallel
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191 | //
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192 | for (int i = 0; i < Math.min(selection.length, 10); i++) {
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193 | Relation r = (Relation) selection[i].getLastPathComponent();
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194 | if (r.isIncomplete()) {
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195 | continue;
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196 | }
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197 | RelationEditor editor = RelationEditor.getEditor(getLayer(), r, null);
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198 | editor.setVisible(true);
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199 | }
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200 | }
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201 |
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202 | @Override
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203 | public void actionPerformed(ActionEvent e) {
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204 | if (!isEnabled())
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205 | return;
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206 | run();
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207 | }
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208 |
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209 | @Override
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210 | public void valueChanged(TreeSelectionEvent e) {
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211 | refreshEnabled();
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212 | }
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213 | }
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214 |
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215 | /**
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216 | * Action for downloading all child relations for a given parent relation.
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217 | * Recursively.
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218 | */
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219 | class DownloadAllChildRelationsAction extends AbstractAction{
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220 | DownloadAllChildRelationsAction() {
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221 | putValue(SHORT_DESCRIPTION, tr("Download all child relations (recursively)"));
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222 | putValue(SMALL_ICON, ImageProvider.get("download"));
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223 | putValue(NAME, tr("Download All Children"));
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224 | }
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225 |
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226 | public void run() {
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227 | Main.worker.submit(new DownloadAllChildrenTask(getParentDialog(), (Relation) model.getRoot()));
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228 | }
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229 |
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230 | @Override
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231 | public void actionPerformed(ActionEvent e) {
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232 | if (!isEnabled())
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233 | return;
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234 | run();
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235 | }
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236 | }
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237 |
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238 | /**
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239 | * Action for downloading all selected relations
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240 | */
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241 | class DownloadSelectedAction extends AbstractAction implements TreeSelectionListener {
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242 | DownloadSelectedAction() {
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243 | putValue(SHORT_DESCRIPTION, tr("Download selected relations"));
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244 | // FIXME: replace with better icon
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245 | //
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246 | putValue(SMALL_ICON, ImageProvider.get("download"));
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247 | putValue(NAME, tr("Download Selected Children"));
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248 | updateEnabledState();
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249 | }
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250 |
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251 | protected void updateEnabledState() {
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252 | TreePath[] selection = childTree.getSelectionPaths();
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253 | setEnabled(selection != null && selection.length > 0);
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254 | }
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255 |
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256 | public void run() {
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257 | TreePath[] selection = childTree.getSelectionPaths();
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258 | if (selection == null || selection.length == 0)
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259 | return;
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260 | Set<Relation> relations = new HashSet<>();
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261 | for (TreePath aSelection : selection) {
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262 | relations.add((Relation) aSelection.getLastPathComponent());
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263 | }
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264 | Main.worker.submit(new DownloadRelationSetTask(getParentDialog(), relations));
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265 | }
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266 |
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267 | @Override
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268 | public void actionPerformed(ActionEvent e) {
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269 | if (!isEnabled())
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270 | return;
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271 | run();
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272 | }
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273 |
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274 | @Override
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275 | public void valueChanged(TreeSelectionEvent e) {
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276 | updateEnabledState();
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277 | }
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278 | }
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279 |
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280 | abstract class DownloadTask extends PleaseWaitRunnable {
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281 | protected boolean canceled;
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282 | protected int conflictsCount;
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283 | protected Exception lastException;
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284 |
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285 | DownloadTask(String title, Dialog parent) {
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286 | super(title, new PleaseWaitProgressMonitor(parent), false);
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287 | }
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288 |
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289 | @Override
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290 | protected void cancel() {
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291 | canceled = true;
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292 | OsmApi.getOsmApi().cancel();
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293 | }
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294 |
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295 | protected void refreshView(Relation relation) {
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296 | for (int i = 0; i < childTree.getRowCount(); i++) {
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297 | Relation reference = (Relation) childTree.getPathForRow(i).getLastPathComponent();
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298 | if (reference == relation) {
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299 | model.refreshNode(childTree.getPathForRow(i));
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300 | }
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301 | }
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302 | }
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303 |
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304 | @Override
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305 | protected void finish() {
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306 | if (canceled)
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307 | return;
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308 | if (lastException != null) {
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309 | ExceptionDialogUtil.explainException(lastException);
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310 | return;
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311 | }
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312 |
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313 | if (conflictsCount > 0) {
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314 | JOptionPane.showMessageDialog(
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315 | Main.parent,
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316 | trn("There was {0} conflict during import.",
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317 | "There were {0} conflicts during import.",
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318 | conflictsCount, conflictsCount),
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319 | trn("Conflict in data", "Conflicts in data", conflictsCount),
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320 | JOptionPane.WARNING_MESSAGE
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321 | );
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322 | }
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323 | }
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324 | }
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325 |
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326 | /**
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327 | * The asynchronous task for downloading relation members.
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328 | */
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329 | class DownloadAllChildrenTask extends DownloadTask {
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330 | private final Relation relation;
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331 | private final Stack<Relation> relationsToDownload;
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332 | private final Set<Long> downloadedRelationIds;
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333 |
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334 | DownloadAllChildrenTask(Dialog parent, Relation r) {
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335 | super(tr("Download relation members"), parent);
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336 | this.relation = r;
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337 | relationsToDownload = new Stack<>();
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338 | downloadedRelationIds = new HashSet<>();
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339 | relationsToDownload.push(this.relation);
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340 | }
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341 |
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342 | /**
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343 | * warns the user if a relation couldn't be loaded because it was deleted on
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344 | * the server (the server replied a HTTP code 410)
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345 | *
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346 | * @param r the relation
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347 | */
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348 | protected void warnBecauseOfDeletedRelation(Relation r) {
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349 | String message = tr("<html>The child relation<br>"
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350 | + "{0}<br>"
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351 | + "is deleted on the server. It cannot be loaded</html>",
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352 | r.getDisplayName(DefaultNameFormatter.getInstance())
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353 | );
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354 |
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355 | JOptionPane.showMessageDialog(
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356 | Main.parent,
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357 | message,
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358 | tr("Relation is deleted"),
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359 | JOptionPane.WARNING_MESSAGE
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360 | );
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361 | }
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362 |
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363 | /**
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364 | * Remembers the child relations to download
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365 | *
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366 | * @param parent the parent relation
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367 | */
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368 | protected void rememberChildRelationsToDownload(Relation parent) {
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369 | downloadedRelationIds.add(parent.getId());
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370 | for (RelationMember member: parent.getMembers()) {
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371 | if (member.isRelation()) {
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372 | Relation child = member.getRelation();
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373 | if (!downloadedRelationIds.contains(child.getId())) {
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374 | relationsToDownload.push(child);
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375 | }
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376 | }
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377 | }
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378 | }
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379 |
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380 | /**
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381 | * Merges the primitives in <code>ds</code> to the dataset of the
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382 | * edit layer
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383 | *
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384 | * @param ds the data set
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385 | */
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386 | protected void mergeDataSet(DataSet ds) {
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387 | if (ds != null) {
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388 | final DataSetMerger visitor = new DataSetMerger(getLayer().data, ds);
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389 | visitor.merge();
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390 | if (!visitor.getConflicts().isEmpty()) {
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391 | getLayer().getConflicts().add(visitor.getConflicts());
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392 | conflictsCount += visitor.getConflicts().size();
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393 | }
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394 | }
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395 | }
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396 |
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397 | @Override
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398 | protected void realRun() throws SAXException, IOException, OsmTransferException {
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399 | try {
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400 | while (!relationsToDownload.isEmpty() && !canceled) {
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401 | Relation r = relationsToDownload.pop();
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402 | if (r.isNew()) {
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403 | continue;
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404 | }
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405 | rememberChildRelationsToDownload(r);
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406 | progressMonitor.setCustomText(tr("Downloading relation {0}", r.getDisplayName(DefaultNameFormatter.getInstance())));
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407 | OsmServerObjectReader reader = new OsmServerObjectReader(r.getId(), OsmPrimitiveType.RELATION,
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408 | true);
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409 | DataSet dataSet = null;
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410 | try {
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411 | dataSet = reader.parseOsm(progressMonitor
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412 | .createSubTaskMonitor(ProgressMonitor.ALL_TICKS, false));
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413 | } catch (OsmApiException e) {
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414 | if (e.getResponseCode() == HttpURLConnection.HTTP_GONE) {
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415 | warnBecauseOfDeletedRelation(r);
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416 | continue;
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417 | }
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418 | throw e;
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419 | }
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420 | mergeDataSet(dataSet);
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421 | refreshView(r);
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422 | }
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423 | SwingUtilities.invokeLater(new Runnable() {
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424 | @Override
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425 | public void run() {
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426 | Main.map.repaint();
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427 | }
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428 | });
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429 | } catch (Exception e) {
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430 | if (canceled) {
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431 | Main.warn(tr("Ignoring exception because task was canceled. Exception: {0}", e.toString()));
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432 | return;
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433 | }
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434 | lastException = e;
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435 | }
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436 | }
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437 | }
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438 |
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439 | /**
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440 | * The asynchronous task for downloading a set of relations
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441 | */
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442 | class DownloadRelationSetTask extends DownloadTask {
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443 | private final Set<Relation> relations;
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444 |
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445 | DownloadRelationSetTask(Dialog parent, Set<Relation> relations) {
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446 | super(tr("Download relation members"), parent);
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447 | this.relations = relations;
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448 | }
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449 |
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450 | protected void mergeDataSet(DataSet dataSet) {
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451 | if (dataSet != null) {
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452 | final DataSetMerger visitor = new DataSetMerger(getLayer().data, dataSet);
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453 | visitor.merge();
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454 | if (!visitor.getConflicts().isEmpty()) {
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455 | getLayer().getConflicts().add(visitor.getConflicts());
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456 | conflictsCount += visitor.getConflicts().size();
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457 | }
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458 | }
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459 | }
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460 |
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461 | @Override
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462 | protected void realRun() throws SAXException, IOException, OsmTransferException {
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463 | try {
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464 | Iterator<Relation> it = relations.iterator();
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465 | while (it.hasNext() && !canceled) {
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466 | Relation r = it.next();
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467 | if (r.isNew()) {
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468 | continue;
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469 | }
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470 | progressMonitor.setCustomText(tr("Downloading relation {0}", r.getDisplayName(DefaultNameFormatter.getInstance())));
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471 | OsmServerObjectReader reader = new OsmServerObjectReader(r.getId(), OsmPrimitiveType.RELATION,
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472 | true);
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473 | DataSet dataSet = reader.parseOsm(progressMonitor
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474 | .createSubTaskMonitor(ProgressMonitor.ALL_TICKS, false));
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475 | mergeDataSet(dataSet);
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476 | refreshView(r);
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477 | }
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478 | } catch (Exception e) {
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479 | if (canceled) {
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480 | Main.warn(tr("Ignoring exception because task was canceled. Exception: {0}", e.toString()));
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481 | return;
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482 | }
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483 | lastException = e;
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484 | }
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485 | }
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486 | }
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487 | }
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