001// License: GPL. For details, see LICENSE file. 002package org.openstreetmap.josm.io; 003 004import static org.openstreetmap.josm.tools.I18n.tr; 005 006import java.io.File; 007import java.io.FileNotFoundException; 008import java.io.IOException; 009import java.io.InputStream; 010 011import javax.swing.JOptionPane; 012 013import org.openstreetmap.josm.Main; 014import org.openstreetmap.josm.actions.ExtensionFileFilter; 015import org.openstreetmap.josm.data.osm.DataSet; 016import org.openstreetmap.josm.gui.layer.OsmDataLayer; 017import org.openstreetmap.josm.gui.progress.NullProgressMonitor; 018import org.openstreetmap.josm.gui.progress.ProgressMonitor; 019import org.openstreetmap.josm.gui.util.GuiHelper; 020 021public class OsmImporter extends FileImporter { 022 023 /** 024 * The OSM file filter (*.osm and *.xml files). 025 */ 026 public static final ExtensionFileFilter FILE_FILTER = new ExtensionFileFilter( 027 "osm,xml", "osm", tr("OSM Server Files") + " (*.osm *.xml)"); 028 029 /** 030 * Utility class containing imported OSM layer, and a task to run after it is added to MapView. 031 */ 032 public static class OsmImporterData { 033 034 private OsmDataLayer layer; 035 private Runnable postLayerTask; 036 037 public OsmImporterData(OsmDataLayer layer, Runnable postLayerTask) { 038 this.layer = layer; 039 this.postLayerTask = postLayerTask; 040 } 041 042 public OsmDataLayer getLayer() { 043 return layer; 044 } 045 046 public Runnable getPostLayerTask() { 047 return postLayerTask; 048 } 049 } 050 051 /** 052 * Constructs a new {@code OsmImporter}. 053 */ 054 public OsmImporter() { 055 super(FILE_FILTER); 056 } 057 058 /** 059 * Constructs a new {@code OsmImporter} with the given extension file filter. 060 * @param filter The extension file filter 061 */ 062 public OsmImporter(ExtensionFileFilter filter) { 063 super(filter); 064 } 065 066 /** 067 * Imports OSM data from file 068 * @param file file to read data from 069 * @param progressMonitor handler for progress monitoring and canceling 070 */ 071 @Override 072 public void importData(File file, ProgressMonitor progressMonitor) throws IOException, IllegalDataException { 073 try (InputStream in = Compression.getUncompressedFileInputStream(file)) { 074 importData(in, file, progressMonitor); 075 } catch (FileNotFoundException e) { 076 Main.error(e); 077 throw new IOException(tr("File ''{0}'' does not exist.", file.getName()), e); 078 } 079 } 080 081 /** 082 * Imports OSM data from stream 083 * @param in input stream 084 * @param associatedFile filename of data 085 */ 086 protected void importData(InputStream in, final File associatedFile) throws IllegalDataException { 087 importData(in, associatedFile, NullProgressMonitor.INSTANCE); 088 } 089 090 /** 091 * Imports OSM data from stream 092 * @param in input stream 093 * @param associatedFile filename of data (layer name will be generated from name of file) 094 * @param pm handler for progress monitoring and canceling 095 */ 096 protected void importData(InputStream in, final File associatedFile, ProgressMonitor pm) throws IllegalDataException { 097 final OsmImporterData data = loadLayer(in, associatedFile, 098 associatedFile == null ? OsmDataLayer.createNewName() : associatedFile.getName(), pm); 099 100 // FIXME: remove UI stuff from IO subsystem 101 GuiHelper.runInEDT(new Runnable() { 102 @Override 103 public void run() { 104 Main.main.addLayer(data.layer); 105 data.postLayerTask.run(); 106 data.layer.onPostLoadFromFile(); 107 } 108 }); 109 } 110 111 /** 112 * Load osm data layer from InputStream. 113 * @param in input stream 114 * @param associatedFile filename of data (can be <code>null</code> if the stream does not come from a file) 115 * @param layerName name of generated layer 116 * @param progressMonitor handler for progress monitoring and canceling 117 */ 118 public OsmImporterData loadLayer(InputStream in, final File associatedFile, final String layerName, ProgressMonitor progressMonitor) throws IllegalDataException { 119 final DataSet dataSet = parseDataSet(in, progressMonitor); 120 if (dataSet == null) { 121 throw new IllegalDataException(tr("Invalid dataset")); 122 } 123 OsmDataLayer layer = createLayer(dataSet, associatedFile, layerName); 124 Runnable postLayerTask = createPostLayerTask(dataSet, associatedFile, layerName, layer); 125 return new OsmImporterData(layer, postLayerTask); 126 } 127 128 protected DataSet parseDataSet(InputStream in, ProgressMonitor progressMonitor) throws IllegalDataException { 129 return OsmReader.parseDataSet(in, progressMonitor); 130 } 131 132 protected OsmDataLayer createLayer(final DataSet dataSet, final File associatedFile, final String layerName) { 133 return new OsmDataLayer(dataSet, layerName, associatedFile); 134 } 135 136 protected Runnable createPostLayerTask(final DataSet dataSet, final File associatedFile, final String layerName, final OsmDataLayer layer) { 137 return new Runnable() { 138 @Override 139 public void run() { 140 if (dataSet.allPrimitives().isEmpty()) { 141 String msg; 142 if (associatedFile == null) { 143 msg = tr("No data found for layer ''{0}''.", layerName); 144 } else { 145 msg = tr("No data found in file ''{0}''.", associatedFile.getPath()); 146 } 147 JOptionPane.showMessageDialog( 148 Main.parent, 149 msg, 150 tr("Open OSM file"), 151 JOptionPane.INFORMATION_MESSAGE); 152 } 153 layer.onPostLoadFromFile(); 154 } 155 }; 156 } 157}