| 1 | // License: GPL. For details, see LICENSE file. |
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| 2 | package org.openstreetmap.josm.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.io.File; |
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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 | |
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| 12 | import org.openstreetmap.josm.Main; |
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| 13 | import org.openstreetmap.josm.actions.ExtensionFileFilter; |
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| 14 | import org.openstreetmap.josm.gui.HelpAwareOptionPane; |
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| 15 | import org.openstreetmap.josm.gui.progress.ProgressMonitor; |
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| 16 | |
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| 17 | public abstract class FileImporter implements Comparable<FileImporter> { |
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| 18 | |
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| 19 | public final ExtensionFileFilter filter; |
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| 20 | |
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| 21 | public FileImporter(ExtensionFileFilter filter) { |
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| 22 | this.filter = filter; |
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| 23 | } |
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| 24 | |
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| 25 | public boolean acceptFile(File pathname) { |
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| 26 | return filter.acceptName(pathname.getName()); |
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| 27 | } |
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| 28 | |
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| 29 | /** |
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| 30 | * A batch importer is a file importer that prefers to read multiple files at the same time. |
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| 31 | */ |
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| 32 | public boolean isBatchImporter() { |
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| 33 | return false; |
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| 34 | } |
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| 35 | |
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| 36 | /** |
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| 37 | * Needs to be implemented if isBatchImporter() returns false. |
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| 38 | */ |
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| 39 | public void importData(File file, ProgressMonitor progressMonitor) throws IOException, IllegalDataException { |
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| 40 | throw new IOException(tr("Could not import ''{0}''.", file.getName())); |
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| 41 | } |
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| 42 | |
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| 43 | /** |
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| 44 | * Needs to be implemented if isBatchImporter() returns true. |
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| 45 | */ |
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| 46 | public void importData(List<File> files, ProgressMonitor progressMonitor) throws IOException, IllegalDataException { |
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| 47 | throw new IOException(tr("Could not import files.")); |
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| 48 | } |
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| 49 | |
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| 50 | /** |
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| 51 | * Wrapper to give meaningful output if things go wrong. |
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| 52 | * @return true if data import was successful |
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| 53 | */ |
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| 54 | public boolean importDataHandleExceptions(File f, ProgressMonitor progressMonitor) { |
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| 55 | try { |
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| 56 | System.out.println("Open file: " + f.getAbsolutePath() + " (" + f.length() + " bytes)"); |
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| 57 | importData(f, progressMonitor); |
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| 58 | return true; |
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| 59 | } catch (Exception e) { |
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| 60 | e.printStackTrace(); |
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| 61 | HelpAwareOptionPane.showMessageDialogInEDT( |
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| 62 | Main.parent, |
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| 63 | tr("<html>Could not read file ''{0}''.<br>Error is:<br>{1}</html>", f.getName(), e.getMessage()), |
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| 64 | tr("Error"), |
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| 65 | JOptionPane.ERROR_MESSAGE, null |
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| 66 | ); |
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| 67 | return false; |
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| 68 | } |
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| 69 | } |
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| 70 | public boolean importDataHandleExceptions(List<File> files, ProgressMonitor progressMonitor) { |
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| 71 | try { |
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| 72 | System.out.println("Open "+files.size()+" files"); |
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| 73 | importData(files, progressMonitor); |
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| 74 | return true; |
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| 75 | } catch (Exception e) { |
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| 76 | e.printStackTrace(); |
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| 77 | HelpAwareOptionPane.showMessageDialogInEDT( |
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| 78 | Main.parent, |
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| 79 | tr("<html>Could not read files.<br>Error is:<br>{0}</html>", e.getMessage()), |
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| 80 | tr("Error"), |
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| 81 | JOptionPane.ERROR_MESSAGE, null |
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| 82 | ); |
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| 83 | return false; |
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| 84 | } |
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| 85 | } |
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| 86 | |
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| 87 | /** |
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| 88 | * If multiple files (with multiple file formats) are selected, |
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| 89 | * they are opened in the order of their priorities. |
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| 90 | * Highest priority comes first. |
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| 91 | */ |
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| 92 | public double getPriority() { |
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| 93 | return 0; |
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| 94 | } |
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| 95 | |
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| 96 | public int compareTo(FileImporter other) { |
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| 97 | return (new Double(this.getPriority())).compareTo(other.getPriority()); |
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| 98 | } |
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| 99 | |
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| 100 | } |
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