[WIP] Create PDF file Exporter

src/main/java/org/jabref/gui/JabRefFrame.java

@@ -68,6 +68,7 @@
 import org.jabref.gui.actions.AutoLinkFilesAction;
 import org.jabref.gui.actions.ConnectToSharedDatabaseAction;
 import org.jabref.gui.actions.ErrorConsoleAction;
+import org.jabref.gui.actions.ExportLinkedFilesAction;
 import org.jabref.gui.actions.IntegrityCheckAction;
 import org.jabref.gui.actions.LookupIdentifierAction;
 import org.jabref.gui.actions.ManageKeywordsAction;
@@ -390,6 +391,7 @@ public void actionPerformed(ActionEvent e) {
             Localization.menuTitle("Unabbreviate journal names"),
             Localization.lang("Unabbreviate journal names of the selected entries"),
             Globals.getKeyPrefs().getKey(KeyBinding.UNABBREVIATE));
+    private final AbstractAction exportLinkedFiles = new ExportLinkedFilesAction();
     private final AbstractAction manageJournals = new ManageJournalsAction();
     private final AbstractAction databaseProperties = new DatabasePropertiesAction();
     private final AbstractAction bibtexKeyPattern = new BibtexKeyPatternAction();
@@ -1234,6 +1236,8 @@ private void fillMenu() {
         tools.add(abbreviateIso);
         tools.add(abbreviateMedline);
         tools.add(unabbreviate);
+        tools.addSeparator();
+        tools.add(exportLinkedFiles);
         mb.add(tools);
 
         options.add(showPrefs);
@@ -1434,7 +1438,7 @@ dupliCheck, autoSetFile, newEntryAction, newSpec, customizeAction, plainTextImpo
         twoEntriesOnlyActions.addAll(Arrays.asList(mergeEntries));
 
         atLeastOneEntryActions.clear();
-        atLeastOneEntryActions.addAll(Arrays.asList(downloadFullText, lookupIdentifiers));
+        atLeastOneEntryActions.addAll(Arrays.asList(downloadFullText, lookupIdentifiers, exportLinkedFiles));
 
         tabbedPane.addChangeListener(event -> updateEnabledState());
 

src/main/java/org/jabref/gui/actions/ExportLinkedFilesAction.java

@@ -0,0 +1,98 @@
+package org.jabref.gui.actions;
+
+import java.awt.event.ActionEvent;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.List;
+import java.util.Optional;
+import java.util.function.BiFunction;
+
+import javax.swing.AbstractAction;
+
+import javafx.scene.control.ProgressBar;
+
+import org.jabref.Globals;
+import org.jabref.JabRefGUI;
+import org.jabref.gui.DialogService;
+import org.jabref.gui.FXDialogService;
+import org.jabref.gui.util.BackgroundTask;
+import org.jabref.gui.util.DefaultTaskExecutor;
+import org.jabref.gui.util.DirectoryDialogConfiguration;
+import org.jabref.gui.util.TaskExecutor;
+import org.jabref.logic.l10n.Localization;
+import org.jabref.logic.util.io.FileUtil;
+import org.jabref.model.database.BibDatabaseContext;
+import org.jabref.model.entry.BibEntry;
+import org.jabref.model.entry.LinkedFile;
+import org.jabref.model.util.FileHelper;
+import org.jabref.model.util.OptionalUtil;
+import org.jabref.preferences.JabRefPreferences;
+
+
+public class ExportLinkedFilesAction extends AbstractAction {
+
+    private final TaskExecutor taskExecutor = Globals.taskExecutor;
+
+    public ExportLinkedFilesAction() {
+        super(Localization.lang("Export linked files"));
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent e) {
+
+        DirectoryDialogConfiguration dirDialogConfiguration = new DirectoryDialogConfiguration.Builder()
+                .withInitialDirectory(
+                        Paths.get(Globals.prefs.get(JabRefPreferences.EXPORT_WORKING_DIRECTORY)))
+                .build();
+        List<BibEntry> entries = JabRefGUI.getMainFrame().getCurrentBasePanel().getSelectedEntries();
+
+        DialogService ds = new FXDialogService();
+        Optional<Path> path = DefaultTaskExecutor
+                .runInJavaFXThread(() -> ds.showDirectorySelectionDialog(dirDialogConfiguration));
+
+        BibDatabaseContext databaseContext = JabRefGUI.getMainFrame().getCurrentBasePanel().getDatabaseContext();
+
+        System.out.println("Files count " + entries.stream().flatMap(entry -> entry.getFiles().stream()).count());
+
+
+        int counter = 0;
+        BackgroundTask<Void> task = BackgroundTask.wrap(() -> {
+
+
+        for (BibEntry entry : entries) {
+
+            List<LinkedFile> files = entry.getFiles();
+            for (LinkedFile fileEntry : files) {
+
+                String fileName = fileEntry.getLink();
+
+                Optional<Path> fileToExport = FileHelper.expandFilename(fileName,
+                        databaseContext.getFileDirectories(Globals.prefs.getFileDirectoryPreferences()));
+
+                Optional<Path> newPath = OptionalUtil.combine(path, fileToExport, resolvePathFilename);
+
+                newPath.ifPresent(newFile -> {
+                    System.out.println(newFile);
+                    FileUtil.copyFile(fileToExport.get(), newFile, false);
+
+                });
+
+            }
+        }
+            return null;
+        });
+
+        System.out.println("Final counter " + counter);
+
+
+        ProgressBar bar = new ProgressBar();
+
+
+
+    }
+
+    BiFunction<Path, Path, Path> resolvePathFilename = (p, f) -> {
+        return p.resolve(f.getFileName());
+    };
+
+}

src/main/java/org/jabref/logic/exporter/ExportFormat.java

@@ -313,12 +313,6 @@ public void performExport(final BibDatabaseContext databaseContext, final String
 
     }
 
-    @Override
-    public void performExport(final BibDatabaseContext databaseContext, Path file, final Charset encoding,
-            List<BibEntry> entries) throws Exception {
-        performExport(databaseContext, file.getFileName().toString(), encoding, entries);
-    }
-
     /**
      * See if there is a name formatter file bundled with this export format. If so, read
      * all the name formatters so they can be used by the filter layouts.

src/main/java/org/jabref/logic/exporter/IExportFormat.java

@@ -1,7 +1,6 @@
 package org.jabref.logic.exporter;
 
 import java.nio.charset.Charset;
-import java.nio.file.Path;
 import java.util.List;
 
 import org.jabref.model.database.BibDatabaseContext;
@@ -38,18 +37,4 @@ public interface IExportFormat {
     void performExport(BibDatabaseContext databaseContext, String file, Charset encoding, List<BibEntry> entries)
             throws Exception;
 
-    /**
-     * Perform the Export.
-     * Gets the path as a java.nio.path instead of a string.
-     *
-     * @param databaseContext the database to export from.
-     * @param file  the Path to the file to write to.The path should be an java.nio.Path
-     * @param encoding  The encoding to use.
-     * @param entries  A list containing all entries that
-     * should be exported. The list of entries must be non null
-     * @throws Exception
-     */
-    void performExport(BibDatabaseContext databaseContext, Path file, Charset encoding, List<BibEntry> entries)
-            throws Exception;
-
 }