1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.gui.io;
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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.io.IOException;
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8 | import java.util.List;
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9 |
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10 | import javax.swing.JOptionPane;
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11 | import javax.swing.SwingUtilities;
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12 |
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13 | import org.openstreetmap.josm.Main;
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14 | import org.openstreetmap.josm.data.osm.Changeset;
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15 | import org.openstreetmap.josm.data.osm.ChangesetCache;
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16 | import org.openstreetmap.josm.data.osm.UserInfo;
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17 | import org.openstreetmap.josm.gui.ExceptionDialogUtil;
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18 | import org.openstreetmap.josm.gui.JosmUserIdentityManager;
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19 | import org.openstreetmap.josm.gui.PleaseWaitRunnable;
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20 | import org.openstreetmap.josm.io.ChangesetQuery;
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21 | import org.openstreetmap.josm.io.OsmServerChangesetReader;
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22 | import org.openstreetmap.josm.io.OsmServerUserInfoReader;
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23 | import org.openstreetmap.josm.io.OsmTransferException;
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24 | import org.xml.sax.SAXException;
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25 |
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26 | /**
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27 | * This is a task for downloading the open changesets of the current user
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28 | * from the OSM server.
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29 | */
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30 | public class DownloadOpenChangesetsTask extends PleaseWaitRunnable {
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31 |
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32 | private boolean canceled;
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33 | private OsmServerChangesetReader reader;
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34 | private List<Changeset> changesets;
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35 | private Exception lastException;
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36 | private Component parent;
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37 |
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38 | /**
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39 | * Constructs the task
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40 | * @param parent is a component to show error messages
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41 | */
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42 | public DownloadOpenChangesetsTask(Component parent) {
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43 | super(parent, tr("Downloading open changesets ..."), false /* don't ignore exceptions */);
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44 | this.parent = parent;
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45 | }
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46 |
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47 | @Override
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48 | protected void cancel() {
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49 | this.canceled = true;
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50 | synchronized(this) {
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51 | if (reader != null) {
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52 | reader.cancel();
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53 | }
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54 | }
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55 | }
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56 |
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57 | @Override
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58 | protected void finish() {
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59 | if (JosmUserIdentityManager.getInstance().isAnonymous()) {
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60 | JOptionPane.showMessageDialog(
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61 | JOptionPane.getFrameForComponent(parent),
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62 | "<html>" + tr("Could not retrieve the list of your open changesets because<br>"
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63 | + "JOSM does not know your identity.<br>"
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64 | + "You have either chosen to work anonymously or you are not entitled<br>"
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65 | + "to know the identity of the user on whose behalf you are working.")
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66 | + "</html>",
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67 | tr("Missing user identity"),
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68 | JOptionPane.ERROR_MESSAGE
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69 | );
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70 | return;
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71 | }
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72 | if (canceled)return;
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73 | if (lastException != null) {
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74 | ExceptionDialogUtil.explainException(lastException);
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75 | return;
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76 | }
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77 | if (changesets.isEmpty()) {
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78 | JOptionPane.showMessageDialog(
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79 | Main.parent,
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80 | tr("There are no open changesets"),
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81 | tr("No open changesets"),
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82 | JOptionPane.INFORMATION_MESSAGE
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83 | );
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84 | return;
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85 | }
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86 | SwingUtilities.invokeLater(
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87 | new Runnable() {
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88 | @Override public void run() {
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89 | ChangesetCache.getInstance().update(changesets);
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90 | }
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91 | }
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92 | );
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93 | }
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94 |
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95 | /**
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96 | * Refreshes the user info from the server. This is necessary if we don't know
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97 | * the users id yet.
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98 | *
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99 | */
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100 | protected void refreshUserIdentity(){
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101 | JosmUserIdentityManager im = JosmUserIdentityManager.getInstance();
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102 | try {
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103 | OsmServerUserInfoReader infoReader = new OsmServerUserInfoReader();
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104 | UserInfo info = infoReader.fetchUserInfo(getProgressMonitor().createSubTaskMonitor(1, false));
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105 | im.setFullyIdentified(info.getDisplayName(), info);
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106 | } catch(OsmTransferException e) {
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107 | // retrieving the user info can fail if the current user is not authorised to
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108 | // retrieve it, i.e. if he is working with an OAuth Access Token which doesn't
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109 | // have the respective privileges or if he didn't or he can't authenticate with
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110 | // a username/password-pair.
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111 | //
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112 | // Downgrade your knowlege about its identity if we've assumed that he was fully
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113 | // identified. Otherwise, if he is anonymous or partially identified, keep our level
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114 | // of knowlege.
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115 | //
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116 | if (im.isFullyIdentified()) {
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117 | im.setPartiallyIdentified(im.getUserName());
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118 | }
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119 | Main.warn(tr("Failed to retrieve user infos for the current JOSM user. Exception was: {0}", e.toString()));
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120 | }
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121 | }
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122 |
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123 | @Override
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124 | protected void realRun() throws SAXException, IOException, OsmTransferException {
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125 | try {
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126 | JosmUserIdentityManager im = JosmUserIdentityManager.getInstance();
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127 | if (im.isAnonymous()) {
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128 | refreshUserIdentity();
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129 | } else if (im.isFullyIdentified()){
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130 | // do nothing
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131 | } else if (im.isPartiallyIdentified()) {
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132 | refreshUserIdentity();
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133 | }
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134 | if (canceled)return;
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135 | synchronized(this) {
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136 | reader = new OsmServerChangesetReader();
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137 | }
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138 | ChangesetQuery query = new ChangesetQuery().beingOpen(true);
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139 | if (im.isAnonymous())
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140 | // we still don't know anything about the current user. Can't retrieve
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141 | // its changesets
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142 | return;
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143 | else if (im.isFullyIdentified()) {
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144 | query = query.forUser(im.getUserId());
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145 | } else {
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146 | // we only know the users name, not its id. Nevermind, try to read
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147 | // its open changesets anyway.
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148 | //
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149 | query = query.forUser(im.getUserName());
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150 | }
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151 | changesets = reader.queryChangesets(
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152 | query,
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153 | getProgressMonitor().createSubTaskMonitor(1, false /* not internal */)
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154 | );
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155 | } catch(Exception e) {
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156 | if (canceled)
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157 | return;
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158 | lastException = e;
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159 | }
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160 | }
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161 |
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162 | public boolean isCanceled() {
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163 | return canceled;
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164 | }
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165 | }
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