001// License: GPL. For details, see LICENSE file. 002package org.openstreetmap.josm.actions; 003 004import static org.openstreetmap.josm.actions.SaveActionBase.createAndOpenSaveFileChooser; 005import static org.openstreetmap.josm.gui.help.HelpUtil.ht; 006import static org.openstreetmap.josm.tools.I18n.tr; 007 008import java.awt.event.ActionEvent; 009import java.awt.event.KeyEvent; 010import java.io.File; 011import java.io.IOException; 012import java.text.MessageFormat; 013 014import javax.swing.JOptionPane; 015 016import org.openstreetmap.josm.Main; 017import org.openstreetmap.josm.gui.layer.GpxLayer; 018import org.openstreetmap.josm.gui.layer.Layer; 019import org.openstreetmap.josm.gui.layer.OsmDataLayer; 020import org.openstreetmap.josm.io.FileExporter; 021import org.openstreetmap.josm.io.GpxImporter; 022import org.openstreetmap.josm.tools.CheckParameterUtil; 023import org.openstreetmap.josm.tools.Shortcut; 024 025/** 026 * Exports data to gpx. 027 * @since 78 028 */ 029public class GpxExportAction extends DiskAccessAction { 030 031 /** 032 * Constructs a new {@code GpxExportAction}. 033 */ 034 public GpxExportAction() { 035 super(tr("Export to GPX..."), "exportgpx", tr("Export the data to GPX file."), 036 Shortcut.registerShortcut("file:exportgpx", tr("Export to GPX..."), KeyEvent.VK_E, Shortcut.CTRL)); 037 putValue("help", ht("/Action/GpxExport")); 038 } 039 040 /** 041 * Get the layer to export. 042 * @return The layer to export, either a {@link GpxLayer} or {@link OsmDataLayer}. 043 */ 044 protected Layer getLayer() { 045 Layer layer = Main.getLayerManager().getActiveLayer(); 046 return (layer instanceof GpxLayer || layer instanceof OsmDataLayer) ? layer : null; 047 } 048 049 @Override 050 public void actionPerformed(ActionEvent e) { 051 if (!isEnabled()) 052 return; 053 Layer layer = getLayer(); 054 if (layer == null) { 055 JOptionPane.showMessageDialog( 056 Main.parent, 057 tr("Nothing to export. Get some data first."), 058 tr("Information"), 059 JOptionPane.INFORMATION_MESSAGE 060 ); 061 return; 062 } 063 export(layer); 064 } 065 066 /** 067 * Exports a layer to a file. Launches a file chooser to request the user to enter a file name. 068 * 069 * <code>layer</code> must not be null. <code>layer</code> must be an instance of 070 * {@link OsmDataLayer} or {@link GpxLayer}. 071 * 072 * @param layer the layer 073 * @throws IllegalArgumentException if layer is null 074 * @throws IllegalArgumentException if layer is neither an instance of {@link OsmDataLayer} 075 * nor of {@link GpxLayer} 076 */ 077 public void export(Layer layer) { 078 CheckParameterUtil.ensureParameterNotNull(layer, "layer"); 079 if (!(layer instanceof OsmDataLayer) && !(layer instanceof GpxLayer)) 080 throw new IllegalArgumentException(MessageFormat.format("Expected instance of OsmDataLayer or GpxLayer. Got ''{0}''.", 081 layer.getClass().getName())); 082 083 File file = createAndOpenSaveFileChooser(tr("Export GPX file"), GpxImporter.getFileFilter()); 084 if (file == null) 085 return; 086 087 for (FileExporter exporter : ExtensionFileFilter.exporters) { 088 if (exporter.acceptFile(file, layer)) { 089 try { 090 exporter.exportData(file, layer); 091 } catch (IOException e) { 092 Main.error(e); 093 } 094 } 095 } 096 } 097 098 /** 099 * Refreshes the enabled state 100 */ 101 @Override 102 protected void updateEnabledState() { 103 setEnabled(getLayer() != null); 104 } 105}