[WIP] Convert entry preview panel to JavaFX

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

@@ -40,6 +40,8 @@
 import javax.swing.undo.CannotUndoException;
 
 import javafx.application.Platform;
+import javafx.embed.swing.JFXPanel;
+import javafx.scene.Scene;
 
 import org.jabref.Globals;
 import org.jabref.JabRefExecutorService;
@@ -55,6 +57,7 @@
 import org.jabref.gui.collab.DatabaseChangeMonitor;
 import org.jabref.gui.collab.FileUpdatePanel;
 import org.jabref.gui.contentselector.ContentSelectorDialog;
+import org.jabref.gui.customjfx.CustomJFXPanel;
 import org.jabref.gui.desktop.JabRefDesktop;
 import org.jabref.gui.entryeditor.EntryEditor;
 import org.jabref.gui.exporter.ExportToClipboardAction;
@@ -169,6 +172,8 @@ public class BasePanel extends JPanel implements ClipboardOwner {
     // Keeps track of the string dialog if it is open.
     private final Map<String, Object> actions = new HashMap<>();
     private final SidePaneManager sidePaneManager;
+    private final PreviewPanel preview;
+    private final JFXPanel previewContainer;
 
     // To contain instantiated entry editors. This is to save time
     // As most enums, this must not be null
@@ -239,6 +244,10 @@ public BasePanel(JabRefFrame frame, BibDatabaseContext bibDatabaseContext) {
         }
 
         this.getDatabase().registerListener(new UpdateTimestampListener(Globals.prefs));
+
+        this.preview = new PreviewPanel(this, getBibDatabaseContext());
+        DefaultTaskExecutor.runInJavaFXThread(() -> frame().getGlobalSearchBar().getSearchQueryHighlightObservable().addSearchListener(preview));
+        this.previewContainer = CustomJFXPanel.wrap(new Scene(preview));
     }
 
     public static void runWorker(AbstractWorker worker) throws Exception {
@@ -687,8 +696,8 @@ public void update() {
             frame.setPreviewToggle(enabled);
         });
 
-        actions.put(Actions.NEXT_PREVIEW_STYLE, (BaseAction) selectionListener::nextPreviewStyle);
-        actions.put(Actions.PREVIOUS_PREVIEW_STYLE, (BaseAction) selectionListener::previousPreviewStyle);
+        actions.put(Actions.NEXT_PREVIEW_STYLE, (BaseAction) this::nextPreviewStyle);
+        actions.put(Actions.PREVIOUS_PREVIEW_STYLE, (BaseAction) this::previousPreviewStyle);
 
         actions.put(Actions.MANAGE_SELECTORS, (BaseAction) () -> {
             ContentSelectorDialog csd = new ContentSelectorDialog(frame, frame, BasePanel.this, false, null);
@@ -1526,14 +1535,39 @@ public void showEntryEditor(EntryEditor editor) {
     /**
      * Sets the given preview panel as the bottom component in the split panel. Updates the mode to SHOWING_PREVIEW.
      *
-     * @param preview The preview to show.
+     * @param entry The entry to show in the preview.
      */
-    public void showPreview(PreviewPanel preview) {
+    public void showPreview(BibEntry entry) {
+        preview.setEntry(entry);
         mode = BasePanelMode.SHOWING_PREVIEW;
-        splitPane.setBottomComponent(preview);
+        splitPane.setBottomComponent(previewContainer);
         adjustSplitter();
     }
 
+    private void showPreview() {
+        if (!mainTable.getSelected().isEmpty()) {
+            showPreview(mainTable.getSelected().get(0));
+        }
+    }
+
+    public void nextPreviewStyle() {
+        cyclePreview(Globals.prefs.getPreviewPreferences().getPreviewCyclePosition() + 1);
+    }
+
+    public void previousPreviewStyle() {
+        cyclePreview(Globals.prefs.getPreviewPreferences().getPreviewCyclePosition() - 1);
+    }
+
+    private void cyclePreview(int newPosition) {
+        PreviewPreferences previewPreferences = Globals.prefs.getPreviewPreferences()
+                .getBuilder()
+                .withPreviewCyclePosition(newPosition)
+                .build();
+        Globals.prefs.storePreviewPreferences(previewPreferences);
+
+        preview.updateLayout(previewPreferences);
+    }
+
     /**
      * Removes the bottom component.
      */
@@ -1755,14 +1789,6 @@ public void autoGenerateKeysBeforeSaving() {
         }
     }
 
-    /**
-     * Activates or deactivates the entry preview, depending on the argument. When deactivating, makes sure that any
-     * visible preview is hidden.
-     */
-    private void setPreviewActive(boolean enabled) {
-        selectionListener.setPreviewActive(enabled);
-    }
-
     /**
      * Depending on whether a preview or an entry editor is showing, save the current divider location in the correct
      * preference setting.
@@ -1937,6 +1963,14 @@ private void setPreviewActiveBasePanels(boolean enabled) {
         }
     }
 
+    private void setPreviewActive(boolean enabled) {
+        if (enabled) {
+            showPreview();
+        } else {
+            preview.close();
+        }
+    }
+
     public CountingUndoManager getUndoManager() {
         return undoManager;
     }
@@ -1967,11 +2001,7 @@ public CitationStyleCache getCitationStyleCache() {
     }
 
     public PreviewPanel getPreviewPanel() {
-        if (selectionListener == null) {
-            // only occurs if this is called while instantiating this BasePanel
-            return null;
-        }
-        return selectionListener.getPreview();
+        return preview;
     }
 
     public FileAnnotationCache getAnnotationCache() {
@@ -2061,7 +2091,7 @@ public void listen(EntryRemovedEvent entryRemovedEvent) {
 
             BibEntry previewEntry = selectionListener.getPreview().getEntry();
             if ((previewEntry != null) && previewEntry.equals(entryRemovedEvent.getBibEntry())) {
-                selectionListener.setPreviewActive(false);
+                preview.close();
             }
         }
     }
@@ -2208,9 +2238,8 @@ private class PrintPreviewAction implements BaseAction {
 
         @Override
         public void action() throws Exception {
-            selectionListener.setPreviewActive(true);
-            showPreview(selectionListener.getPreview());
-            selectionListener.getPreview().getPrintAction().actionPerformed(new ActionEvent(this, ActionEvent.ACTION_PERFORMED, null));
+            showPreview();
+            preview.print();
         }
     }
 

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

@@ -5,6 +5,7 @@
 import java.util.Optional;
 
 import javafx.concurrent.Task;
+import javafx.print.PrinterJob;
 import javafx.scene.control.Alert;
 import javafx.scene.control.ButtonType;
 import javafx.scene.control.DialogPane;
@@ -183,4 +184,13 @@ Optional<ButtonType> showCustomButtonDialogAndWait(Alert.AlertType type, String
      */
     FileChooser getConfiguredFileChooser(FileDialogConfiguration fileDialogConfiguration);
 
+    /**
+     * Displays a Print Dialog. Allow the user to update job state such as printer and settings. These changes will be
+     * available in the appropriate properties after the print dialog has returned. The print dialog is also used to
+     * confirm the user wants to proceed with printing.
+     *
+     * @param job the print job to customize
+     * @return false if the user opts to cancel printing
+     */
+    boolean showPrintDialog(PrinterJob job);
 }

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

@@ -8,6 +8,7 @@
 import java.util.stream.Collectors;
 
 import javafx.concurrent.Task;
+import javafx.print.PrinterJob;
 import javafx.scene.control.Alert.AlertType;
 import javafx.scene.control.Button;
 import javafx.scene.control.ButtonBar;
@@ -193,4 +194,8 @@ public FileChooser getConfiguredFileChooser(FileDialogConfiguration fileDialogCo
         return chooser;
     }
 
+    @Override
+    public boolean showPrintDialog(PrinterJob job) {
+        return job.showPrintDialog(null);
+    }
 }