Close OO connection on JabRef exit

CHANGELOG.md

@@ -31,6 +31,7 @@ Note that this project **does not** adhere to [Semantic Versioning](http://semve
 - We fixed a bug where spaces are trimmed when highlighting differences in the Entries merge dialog. [koppor#371](https://github.com/koppor/jabref/issues/371)
 - We fixed several bugs regarding the manual and the autosave of library files that sometimes lead to exceptions or data loss. [#8448](https://github.com/JabRef/jabref/issues/8484), [#8746](https://github.com/JabRef/jabref/issues/8746), [#6684](https://github.com/JabRef/jabref/issues/6684), [#6644](https://github.com/JabRef/jabref/issues/6644), [#6102](https://github.com/JabRef/jabref/issues/6102), [#6002](https://github.com/JabRef/jabref/issues/6000)
 - We fixed an issue where applied save actions on saving the library file would lead to the dialog "The libary has been modified by another program" popping up [#4877](https://github.com/JabRef/jabref/issues/4877)
+- We fixed an issue where JabRef would not exit when a connection to a LibreOffice document was established previously and the document is still open [#9075](https://github.com/JabRef/jabref/issues/9075)
 
 ### Removed
 

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

@@ -15,6 +15,7 @@
 
 import org.jabref.cli.ArgumentProcessor;
 import org.jabref.cli.JabRefCLI;
+import org.jabref.gui.openoffice.OOBibBaseConnect;
 import org.jabref.gui.remote.JabRefMessageHandler;
 import org.jabref.logic.exporter.ExporterFactory;
 import org.jabref.logic.journals.JournalAbbreviationLoader;
@@ -131,6 +132,7 @@ public void start(Stage mainStage) {
 
     @Override
     public void stop() {
+        OOBibBaseConnect.closeOfficeConnection();
         Globals.stopBackgroundTasks();
         Globals.shutdownThreadPools();
     }

src/main/java/org/jabref/gui/openoffice/OOBibBaseConnect.java

@@ -15,6 +15,8 @@
 import org.jabref.model.openoffice.uno.UnoTextDocument;
 import org.jabref.model.openoffice.util.OOResult;
 
+import com.sun.star.bridge.XBridge;
+import com.sun.star.bridge.XBridgeFactory;
 import com.sun.star.comp.helper.BootstrapException;
 import com.sun.star.container.NoSuchElementException;
 import com.sun.star.container.XEnumeration;
@@ -25,11 +27,17 @@
 import com.sun.star.lang.XMultiComponentFactory;
 import com.sun.star.text.XTextDocument;
 import com.sun.star.uno.XComponentContext;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import static com.sun.star.uno.UnoRuntime.queryInterface;
 
 /**
  * Establish connection to a document opened in OpenOffice or LibreOffice.
  */
-class OOBibBaseConnect {
+public class OOBibBaseConnect {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(OOBibBaseConnect.class);
 
     private final DialogService dialogService;
     private final XDesktop xDesktop;
@@ -70,6 +78,27 @@ private XDesktop simpleBootstrap(Path loPath)
         return UnoCast.cast(XDesktop.class, desktop).get();
     }
 
+    /**
+     * Close any open office connection, if none exists does nothing
+     */
+    public static void closeOfficeConnection() {
+        try {
+            // get the bridge factory from the local service manager
+            XBridgeFactory bridgeFactory = queryInterface(XBridgeFactory.class,
+                                                          org.jabref.gui.openoffice.Bootstrap.createSimpleServiceManager()
+                    .createInstance("com.sun.star.bridge.BridgeFactory"));
+
+            if (bridgeFactory != null) {
+                for (XBridge bridge : bridgeFactory.getExistingBridges()) {
+                    // dispose of this bridge after closing its connection
+                    queryInterface(XComponent.class, bridge).dispose();
+                }
+            }
+        } catch (Exception ex) {
+            LOGGER.error("Exception disposing office process connection bridge", ex);
+        }
+    }
+
     private static List<XTextDocument> getTextDocuments(XDesktop desktop)
             throws
             NoSuchElementException,
@@ -125,15 +154,15 @@ public String toString() {
         // auto-detecting instances, so we need to show dialog in FX
         // thread
         Optional<DocumentTitleViewModel> selectedDocument =
-                (dialogService
+                dialogService
                         .showChoiceDialogAndWait(Localization.lang("Select document"),
                                 Localization.lang("Found documents:"),
                                 Localization.lang("Use selected document"),
-                                viewModel));
+                                viewModel);
 
-        return (selectedDocument
+        return selectedDocument
                 .map(DocumentTitleViewModel::getXtextDocument)
-                .orElse(null));
+                .orElse(null);
     }
 
     /**
@@ -157,7 +186,7 @@ public void selectDocument(boolean autoSelectForSingle)
         List<XTextDocument> textDocumentList = getTextDocuments(this.xDesktop);
         if (textDocumentList.isEmpty()) {
             throw new NoDocumentFoundException("No Writer documents found");
-        } else if (textDocumentList.size() == 1 && autoSelectForSingle) {
+        } else if ((textDocumentList.size() == 1) && autoSelectForSingle) {
             selected = textDocumentList.get(0); // Get the only one
         } else { // Bring up a dialog
             selected = OOBibBaseConnect.selectDocumentDialog(textDocumentList,
@@ -233,4 +262,4 @@ public Optional<String> getCurrentDocumentTitle() {
             return UnoTextDocument.getFrameTitle(this.xTextDocument);
         }
     }
-} // end of OOBibBaseConnect
+}