| 1 | //License: GPL. Copyright 2007 by Immanuel Scholz and others
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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.io.File;
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| 8 | import java.io.FileOutputStream;
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| 9 | import java.io.FileInputStream;
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| 10 | import java.io.FileNotFoundException;
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| 11 | import java.io.IOException;
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| 12 |
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| 13 | import javax.swing.JFileChooser;
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| 14 | import javax.swing.JOptionPane;
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| 15 | import javax.swing.filechooser.FileFilter;
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| 16 |
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| 17 | import org.openstreetmap.josm.Main;
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| 18 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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| 19 | import org.openstreetmap.josm.gui.layer.OsmDataLayer;
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| 20 | import org.openstreetmap.josm.gui.layer.Layer;
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| 21 | import org.openstreetmap.josm.gui.layer.GpxLayer;
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| 22 | import org.openstreetmap.josm.io.OsmWriter;
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| 23 | import org.openstreetmap.josm.io.GpxWriter;
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| 24 |
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| 25 | public abstract class SaveActionBase extends DiskAccessAction {
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| 26 |
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| 27 | private Layer layer;
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| 28 |
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| 29 | public SaveActionBase(String name, String iconName, String tooltip, int shortCut, int modifiers, Layer layer) {
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| 30 | super(name, iconName, tooltip, shortCut, modifiers);
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| 31 | this.layer = layer;
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| 32 | }
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| 33 |
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| 34 | public void actionPerformed(ActionEvent e) {
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| 35 | Layer layer = this.layer;
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| 36 | if (layer == null && Main.map != null && (Main.map.mapView.getActiveLayer() instanceof OsmDataLayer
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| 37 | || Main.map.mapView.getActiveLayer() instanceof GpxLayer))
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| 38 | layer = Main.map.mapView.getActiveLayer();
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| 39 | if (layer == null)
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| 40 | layer = Main.main.editLayer();
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| 41 |
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| 42 | if (!checkSaveConditions(layer))
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| 43 | return;
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| 44 |
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| 45 |
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| 46 | File file = getFile(layer);
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| 47 | if (file == null)
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| 48 | return;
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| 49 |
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| 50 | save(file, layer);
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| 51 |
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| 52 | layer.name = file.getName();
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| 53 | layer.associatedFile = file;
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| 54 | Main.parent.repaint();
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| 55 | }
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| 56 |
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| 57 | protected abstract File getFile(Layer layer);
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| 58 |
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| 59 | /**
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| 60 | * Checks whether it is ok to launch a save (whether we have data,
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| 61 | * there is no conflict etc.)
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| 62 | * @return <code>true</code>, if it is safe to save.
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| 63 | */
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| 64 | public boolean checkSaveConditions(Layer layer) {
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| 65 | if (layer == null) {
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| 66 | JOptionPane.showMessageDialog(Main.parent, tr("Internal Error: cannot check conditions for no layer. Please report this as a bug."));
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| 67 | return false;
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| 68 | }
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| 69 | if (Main.map == null) {
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| 70 | JOptionPane.showMessageDialog(Main.parent, tr("No document open so nothing to save."));
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| 71 | return false;
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| 72 | }
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| 73 |
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| 74 | if (layer instanceof OsmDataLayer && isDataSetEmpty((OsmDataLayer)layer) && JOptionPane.NO_OPTION == JOptionPane.showConfirmDialog(Main.parent,tr("The document contains no data. Save anyway?"), tr("Empty document"), JOptionPane.YES_NO_OPTION)) {
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| 75 | return false;
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| 76 | }
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| 77 | if (layer instanceof GpxLayer && ((GpxLayer)layer).data == null) {
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| 78 | return false;
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| 79 | }
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| 80 | if (!Main.map.conflictDialog.conflicts.isEmpty()) {
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| 81 | int answer = JOptionPane.showConfirmDialog(Main.parent,
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| 82 | tr("There are unresolved conflicts. Conflicts will not be saved and handled as if you rejected all. Continue?"),tr("Conflicts"), JOptionPane.YES_NO_OPTION);
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| 83 | if (answer != JOptionPane.YES_OPTION)
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| 84 | return false;
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| 85 | }
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| 86 | return true;
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| 87 | }
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| 88 |
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| 89 | public static File openFileDialog(Layer layer) {
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| 90 | JFileChooser fc = createAndOpenFileChooser(false, false, layer instanceof GpxLayer ? tr("Save GPX file") : tr("Save OSM file"));
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| 91 | if (fc == null)
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| 92 | return null;
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| 93 |
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| 94 | File file = fc.getSelectedFile();
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| 95 |
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| 96 | String fn = file.getPath();
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| 97 | if (fn.indexOf('.') == -1) {
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| 98 | FileFilter ff = fc.getFileFilter();
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| 99 | if (ff instanceof ExtensionFileFilter)
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| 100 | fn += "." + ((ExtensionFileFilter)ff).defaultExtension;
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| 101 | else if (layer instanceof GpxLayer)
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| 102 | fn += ".gpx";
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| 103 | else
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| 104 | fn += ".osm";
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| 105 | file = new File(fn);
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| 106 | }
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| 107 | return file;
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| 108 | }
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| 109 |
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| 110 | private static void copy(File src, File dst) throws IOException {
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| 111 | FileInputStream srcStream;
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| 112 | FileOutputStream dstStream;
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| 113 | try {
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| 114 | srcStream = new FileInputStream(src);
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| 115 | dstStream = new FileOutputStream(dst);
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| 116 | } catch (FileNotFoundException e) {
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| 117 | JOptionPane.showMessageDialog(Main.parent, tr("Could not back up file.")+"\n"+e.getMessage());
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| 118 | return;
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| 119 | }
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| 120 | byte buf[] = new byte[1<<16];
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| 121 | int len;
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| 122 | while ((len = srcStream.read(buf)) != -1) {
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| 123 | dstStream.write(buf, 0, len);
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| 124 | }
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| 125 | srcStream.close();
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| 126 | dstStream.close();
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| 127 | }
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| 128 |
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| 129 | public static void save(File file, Layer layer) {
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| 130 | if (layer instanceof GpxLayer) {
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| 131 | save(file, (GpxLayer)layer);
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| 132 | ((GpxLayer)layer).data.storageFile = file;
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| 133 | } else if (layer instanceof OsmDataLayer) {
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| 134 | save(file, (OsmDataLayer)layer);
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| 135 | }
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| 136 | }
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| 137 |
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| 138 | public static void save(File file, OsmDataLayer layer) {
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| 139 | File tmpFile = null;
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| 140 | try {
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| 141 | if (ExtensionFileFilter.filters[ExtensionFileFilter.GPX].acceptName(file.getPath())) {
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| 142 | GpxExportAction.exportGpx(file, layer);
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| 143 | } else if (ExtensionFileFilter.filters[ExtensionFileFilter.OSM].acceptName(file.getPath())) {
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| 144 | // use a tmp file because if something errors out in the
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| 145 | // process of writing the file, we might just end up with
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| 146 | // a truncated file. That can destroy lots of work.
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| 147 | if (file.exists()) {
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| 148 | tmpFile = new File(file.getPath() + "~");
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| 149 | copy(file, tmpFile);
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| 150 | }
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| 151 | OsmWriter.output(new FileOutputStream(file), new OsmWriter.All(layer.data, false));
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| 152 | if (!Main.pref.getBoolean("save.keepbackup") && (tmpFile != null))
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| 153 | tmpFile.delete();
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| 154 | } else {
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| 155 | JOptionPane.showMessageDialog(Main.parent, tr("Unknown file extension."));
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| 156 | return;
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| 157 | }
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| 158 | layer.cleanData(null, false);
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| 159 | } catch (IOException e) {
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| 160 | e.printStackTrace();
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| 161 | JOptionPane.showMessageDialog(Main.parent, tr("An error occurred while saving.")+"\n"+e.getMessage());
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| 162 |
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| 163 | try {
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| 164 | // if the file save failed, then the tempfile will not
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| 165 | // be deleted. So, restore the backup if we made one.
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| 166 | if (tmpFile != null && tmpFile.exists()) {
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| 167 | copy(tmpFile, file);
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| 168 | }
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| 169 | } catch (IOException e2) {
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| 170 | e2.printStackTrace();
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| 171 | JOptionPane.showMessageDialog(Main.parent, tr("An error occurred while restoring backup file.")+"\n"+e2.getMessage());
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| 172 | }
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| 173 | }
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| 174 | }
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| 175 |
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| 176 | public static void save(File file, GpxLayer layer) {
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| 177 | File tmpFile = null;
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| 178 | try {
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| 179 | if (ExtensionFileFilter.filters[ExtensionFileFilter.GPX].acceptName(file.getPath())) {
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| 180 |
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| 181 | // use a tmp file because if something errors out in the
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| 182 | // process of writing the file, we might just end up with
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| 183 | // a truncated file. That can destroy lots of work.
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| 184 | if (file.exists()) {
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| 185 | tmpFile = new File(file.getPath() + "~");
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| 186 | copy(file, tmpFile);
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| 187 | }
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| 188 | FileOutputStream fo = new FileOutputStream(file);
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| 189 | new GpxWriter(fo).write(layer.data);
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| 190 | fo.flush();
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| 191 | fo.close();
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| 192 |
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| 193 | if (!Main.pref.getBoolean("save.keepbackup") && (tmpFile != null)) {
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| 194 | tmpFile.delete();
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| 195 | }
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| 196 | } else {
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| 197 | JOptionPane.showMessageDialog(Main.parent, tr("Unknown file extension."));
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| 198 | return;
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| 199 | }
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| 200 | } catch (IOException e) {
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| 201 | e.printStackTrace();
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| 202 | JOptionPane.showMessageDialog(Main.parent, tr("An error occurred while saving.")+"\n"+e.getMessage());
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| 203 | }
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| 204 | try {
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| 205 | // if the file save failed, then the tempfile will not
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| 206 | // be deleted. So, restore the backup if we made one.
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| 207 | if (tmpFile != null && tmpFile.exists()) {
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| 208 | copy(tmpFile, file);
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| 209 | }
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| 210 | } catch (IOException e) {
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| 211 | e.printStackTrace();
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| 212 | JOptionPane.showMessageDialog(Main.parent, tr("An error occurred while restoring backup file.")+"\n"+e.getMessage());
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| 213 | }
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| 214 | }
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| 215 |
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| 216 | /**
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| 217 | * Check the data set if it would be empty on save. It is empty, if it contains
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| 218 | * no objects (after all objects that are created and deleted without being
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| 219 | * transfered to the server have been removed).
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| 220 | *
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| 221 | * @return <code>true</code>, if a save result in an empty data set.
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| 222 | */
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| 223 | private boolean isDataSetEmpty(OsmDataLayer layer) {
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| 224 | for (OsmPrimitive osm : layer.data.allNonDeletedPrimitives())
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| 225 | if (!osm.deleted || osm.id > 0)
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| 226 | return false;
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| 227 | return true;
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| 228 | }
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| 229 | }
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