Fix right clicking on any entry and selecting "Open folder" results in the NullPointer exception

.mailmap

@@ -142,4 +142,5 @@ Johannes Manner <johannes.manner@web.de>
 Dominik Traczyk <dominik646@gmail.com>
 Cerrianne Santos <cerrianne.santos@gmail.com>
 Stefan Scheffel <st155160@stud.uni-stuttgart.de>
-Stefan Gerzmann <steppery@gmx.de>
+Stefan Gerzmann <steppery@gmx.de>
+Deepak Kumar <deepakkumar24196@gmail.com>

CHANGELOG.md

@@ -60,6 +60,7 @@ We refer to [GitHub issues](https://github.com/JabRef/jabref/issues) by using `#
 - We changed the title of Group Dialog to "Add subgroup" from "Edit group" when we select Add subgroup option.
 - We enable import button only if entries are selected. [#4755](https://github.com/JabRef/jabref/issues/4755)
 - We made modifications to improve contrast of UI elements. [#4583](https://github.com/JabRef/jabref/issues/4583)
+- We add an option in preference settings to set what action to be taken by JabRef when right clicking on any entry in any database and selecting "Open folder". [#4763](https://github.com/JabRef/jabref/issues/4763)
 
 ### Fixed
 - We fixed an issue where corresponding groups are sometimes not highlighted when clicking on entries [#3112](https://github.com/JabRef/jabref/issues/3112)
@@ -99,8 +100,8 @@ We refer to [GitHub issues](https://github.com/JabRef/jabref/issues) by using `#
 - We fixed an issue where only one PDF file could be imported [#4422](https://github.com/JabRef/jabref/issues/4422)
 - We fixed an issue where "Move to group" would always move the first entry in the library and not the selected [#4414](https://github.com/JabRef/jabref/issues/4414)
 - We fixed an issue where an older dialog appears when downloading full texts from the quality menu. [#4489](https://github.com/JabRef/jabref/issues/4489)
-
-
+- We fixed an issue where right clicking on any entry in any database and selecting "Open folder" results in the NullPointer exception. [#4763](https://github.com/JabRef/jabref/issues/4763)
+- We fixed an issue where option 'open terminal here' with custom command was passing wrong argument. [#4802](https://github.com/JabRef/jabref/issues/4802)
 
 
 

src/main/java/org/jabref/gui/desktop/JabRefDesktop.java

@@ -168,7 +168,33 @@ private static void openExternalFilePlatformIndependent(Optional<ExternalFileTyp
      * @throws IOException
      */
     public static void openFolderAndSelectFile(Path fileLink) throws IOException {
-        NATIVE_DESKTOP.openFolderAndSelectFile(fileLink);
+        if (fileLink == null) {
+            return;
+        }
+        boolean usingDefault = Globals.prefs.getBoolean(JabRefPreferences.USE_DEFAULT_FILE_BROWSER_APPLICATION);
+
+        if (usingDefault) {
+            NATIVE_DESKTOP.openFolderAndSelectFile(fileLink);
+        } else {
+            String absolutePath = fileLink.toAbsolutePath().getParent().toString();
+            String command = Globals.prefs.get(JabRefPreferences.FILE_BROWSER_COMMAND);
+            if (!command.isEmpty()) {
+                command = command.replaceAll("\\s+", " "); // normalize white spaces
+
+                // replace the placeholder if used
+                command = command.replace("%DIR", absolutePath);
+                String[] subcommands = command.split(" ");
+
+                LOGGER.info("Executing command \"" + command + "\"...");
+
+                try {
+                    new ProcessBuilder(subcommands).start();
+                } catch (IOException exception) {
+                    LOGGER.error("Open File Browser", exception);
+                    JabRefGUI.getMainFrame().getDialogService().notify(Localization.lang("Error occured while executing the command \"%0\".", command));
+                }
+            }
+        }
     }
 
     /**
@@ -234,24 +260,17 @@ public static void openConsole(File file) throws IOException {
 
             if (!command.isEmpty()) {
                 command = command.replaceAll("\\s+", " "); // normalize white spaces
-                String[] subcommands = command.split(" ");
+                command = command.replace("%DIR", absolutePath); // replace the placeholder if used
 
-                // replace the placeholder if used
-                String commandLoggingText = command.replace("%DIR", absolutePath);
+                String[] subcommands = command.split(" ");
 
-                JabRefGUI.getMainFrame().output(Localization.lang("Executing command \"%0\"...", commandLoggingText));
-                LOGGER.info("Executing command \"" + commandLoggingText + "\"...");
+                LOGGER.info("Executing command \"" + command + "\"...");
 
                 try {
                     new ProcessBuilder(subcommands).start();
                 } catch (IOException exception) {
                     LOGGER.error("Open console", exception);
-
-                    JOptionPane.showMessageDialog(null,
-                                                  Localization.lang("Error occured while executing the command \"%0\".", commandLoggingText),
-                                                  Localization.lang("Open console") + " - " + Localization.lang("Error"),
-                                                  JOptionPane.ERROR_MESSAGE);
-                    JabRefGUI.getMainFrame().output(null);
+                    JabRefGUI.getMainFrame().getDialogService().notify(Localization.lang("Error occured while executing the command \"%0\".", command));
                 }
             }
         }

src/main/java/org/jabref/gui/desktop/os/Linux.java

@@ -51,18 +51,18 @@ public void openFileWithApplication(String filePath, String application) throws
 
     @Override
     public void openFolderAndSelectFile(Path filePath) throws IOException {
-        String desktopSession = System.getenv("DESKTOP_SESSION").toLowerCase(Locale.ROOT);
+        String desktopSession = System.getenv("DESKTOP_SESSION");
 
-        String cmd;
+        String cmd = "xdg-open " + filePath.toAbsolutePath().getParent().toString(); //default command
 
-        if (desktopSession.contains("gnome")) {
-            cmd = "nautilus" + filePath.toString().replace(" ", "\\ ");
-        } else if (desktopSession.contains("kde")) {
-            cmd = "dolphin --select " + filePath.toString().replace(" ", "\\ ");
-        } else {
-            cmd = "xdg-open " + filePath.toAbsolutePath().getParent().toString();
+        if (desktopSession != null) {
+            desktopSession = desktopSession.toLowerCase(Locale.ROOT);
+            if (desktopSession.contains("gnome")) {
+                cmd = "nautilus" + filePath.toString().replace(" ", "\\ ");
+            } else if (desktopSession.contains("kde")) {
+                cmd = "dolphin --select " + filePath.toString().replace(" ", "\\ ");
+            }
         }
-
         Runtime.getRuntime().exec(cmd);
     }
 
@@ -73,7 +73,6 @@ public void openConsole(String absolutePath) throws IOException {
         BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream()));
 
         String emulatorName = reader.readLine();
-
         if (emulatorName != null) {
             emulatorName = emulatorName.substring(emulatorName.lastIndexOf(File.separator) + 1);
 

src/main/java/org/jabref/gui/preferences/ExternalTab.java

@@ -20,6 +20,7 @@
 import org.jabref.gui.util.FileDialogConfiguration;
 import org.jabref.logic.l10n.Localization;
 import org.jabref.logic.util.OS;
+import org.jabref.model.strings.StringUtil;
 import org.jabref.preferences.JabRefPreferences;
 
 class ExternalTab implements PrefsTab {
@@ -38,6 +39,12 @@ class ExternalTab implements PrefsTab {
     private final RadioButton sumatraReader;
     private final TextField adobeAcrobatReaderPath;
     private final TextField sumatraReaderPath;
+
+    private final RadioButton defaultFileBrowser;
+    private final RadioButton executeFileBrowser;
+    private final TextField fileBrowserCommand;
+    private final Button fileBrowserButton;
+
     private final GridPane builder = new GridPane();
     private final DialogService dialogService;
     private final FileDialogConfiguration fileDialogConfiguration = new FileDialogConfiguration.Builder().build();
@@ -59,11 +66,20 @@ public ExternalTab(JabRefFrame frame, PreferencesDialog prefsDiag, JabRefPrefere
         sumatraReaderPath = new TextField();
         Button browseSumatraReader = new Button(Localization.lang("Browse"));
 
+        defaultFileBrowser = new RadioButton(Localization.lang("Use default file browser"));
+        executeFileBrowser = new RadioButton(Localization.lang("Execute Command"));
+        fileBrowserCommand = new TextField();
+        fileBrowserButton = new Button(Localization.lang("Browser"));
+
         Label commandDescription = new Label(Localization.lang("Note: Use the placeholder %0 for the location of the opened library file.", "%DIR"));
         defaultConsole.setOnAction(e -> updateExecuteConsoleButtonAndFieldEnabledState());
         executeConsole.setOnAction(e -> updateExecuteConsoleButtonAndFieldEnabledState());
         browseButton.setOnAction(e -> showConsoleChooser());
 
+        fileBrowserButton.disableProperty().bind(executeFileBrowser.selectedProperty().not());
+        fileBrowserCommand.disableProperty().bind(executeFileBrowser.selectedProperty().not());
+        fileBrowserButton.setOnAction(e -> showFileBrowserCommandChooser());
+
         browseAdobeAcrobatReader.setOnAction(e -> showAdobeChooser());
 
         GridPane consoleOptionPanel = new GridPane();
@@ -83,6 +99,17 @@ public ExternalTab(JabRefFrame frame, PreferencesDialog prefsDiag, JabRefPrefere
         adobeAcrobatReader.setToggleGroup(pdfReaderGroup);
         pdfOptionPanel.add(browseAdobeAcrobatReader, 3, 1);
 
+        Label fileBrowserCommandDescription = new Label(Localization.lang("Note: Use the placeholder %0 for the location of the opened library file.", "%DIR"));
+        GridPane fileBrowserOptionPanel = new GridPane();
+        final ToggleGroup fileBrowserGroup = new ToggleGroup();
+        defaultFileBrowser.setToggleGroup(fileBrowserGroup);
+        executeFileBrowser.setToggleGroup(fileBrowserGroup);
+        fileBrowserOptionPanel.add(defaultFileBrowser, 1, 1);
+        fileBrowserOptionPanel.add(executeFileBrowser, 1, 2);
+        fileBrowserOptionPanel.add(fileBrowserCommand, 2, 2);
+        fileBrowserOptionPanel.add(fileBrowserButton, 3, 2);
+        fileBrowserOptionPanel.add(fileBrowserCommandDescription, 2, 3);
+
         if (OS.WINDOWS) {
             browseSumatraReader.setOnAction(e -> showSumatraChooser());
             pdfOptionPanel.add(sumatraReader, 1, 2);
@@ -133,6 +160,12 @@ public ExternalTab(JabRefFrame frame, PreferencesDialog prefsDiag, JabRefPrefere
 
         builder.add(pdfOptionPanel, 1, 13);
 
+        Label openFileBrowser = new Label(Localization.lang("Open File Browser"));
+        openFileBrowser.getStyleClass().add("sectionHeader");
+        builder.add(openFileBrowser,  1, 14);
+
+        builder.add(fileBrowserOptionPanel, 1, 15);
+
     }
 
     @Override
@@ -165,6 +198,10 @@ public void setValues() {
 
         consoleCommand.setText(Globals.prefs.get(JabRefPreferences.CONSOLE_COMMAND));
 
+        defaultFileBrowser.setSelected(Globals.prefs.getBoolean(JabRefPreferences.USE_DEFAULT_FILE_BROWSER_APPLICATION));
+        executeFileBrowser.setSelected(!Globals.prefs.getBoolean(JabRefPreferences.USE_DEFAULT_FILE_BROWSER_APPLICATION));
+        fileBrowserCommand.setText(Globals.prefs.get(JabRefPreferences.FILE_BROWSER_COMMAND));
+
         adobeAcrobatReaderPath.setText(Globals.prefs.get(JabRefPreferences.ADOBE_ACROBAT_COMMAND));
         if (OS.WINDOWS) {
             sumatraReaderPath.setText(Globals.prefs.get(JabRefPreferences.SUMATRA_PDF_COMMAND));
@@ -187,6 +224,13 @@ public void storeSettings() {
         prefs.putBoolean(JabRefPreferences.USE_DEFAULT_CONSOLE_APPLICATION, defaultConsole.isSelected());
         prefs.put(JabRefPreferences.CONSOLE_COMMAND, consoleCommand.getText());
         prefs.put(JabRefPreferences.ADOBE_ACROBAT_COMMAND, adobeAcrobatReaderPath.getText());
+
+        prefs.putBoolean(JabRefPreferences.USE_DEFAULT_FILE_BROWSER_APPLICATION, defaultFileBrowser.isSelected());
+        if (StringUtil.isNotBlank(fileBrowserCommand.getText())) {
+            prefs.put(JabRefPreferences.FILE_BROWSER_COMMAND, fileBrowserCommand.getText());
+        } else {
+            prefs.putBoolean(JabRefPreferences.USE_DEFAULT_FILE_BROWSER_APPLICATION, true); //default if no command specified
+        }
         if (OS.WINDOWS) {
             prefs.put(JabRefPreferences.SUMATRA_PDF_COMMAND, sumatraReaderPath.getText());
         }
@@ -220,6 +264,10 @@ private void showSumatraChooser() {
         dialogService.showFileOpenDialog(fileDialogConfiguration).ifPresent(file -> sumatraReaderPath.setText(file.toAbsolutePath().toString()));
     }
 
+    private void showFileBrowserCommandChooser() {
+        dialogService.showFileOpenDialog(fileDialogConfiguration).ifPresent(file -> fileBrowserCommand.setText(file.toAbsolutePath().toString()));
+    }
+
     private void readerSelected() {
         if (adobeAcrobatReader.isSelected()) {
             prefs.put(JabRefPreferences.USE_PDF_READER, adobeAcrobatReaderPath.getText());

src/main/java/org/jabref/preferences/JabRefPreferences.java

@@ -244,6 +244,9 @@ public class JabRefPreferences implements PreferencesService {
     public static final String ADOBE_ACROBAT_COMMAND = "adobeAcrobatCommand";
     public static final String SUMATRA_PDF_COMMAND = "sumatraCommand";
     public static final String USE_PDF_READER = "usePDFReader";
+    public static final String USE_DEFAULT_FILE_BROWSER_APPLICATION = "userDefaultFileBrowserApplication";
+    public static final String FILE_BROWSER_COMMAND = "fileBrowserCommand";
+
     // Currently, it is not possible to specify defaults for specific entry types
     // When this should be made possible, the code to inspect is org.jabref.gui.preferences.BibtexKeyPatternPrefTab.storeSettings() -> LabelPattern keypatterns = getCiteKeyPattern(); etc
     public static final String DEFAULT_BIBTEX_KEY_PATTERN = "defaultBibtexKeyPattern";
@@ -729,16 +732,19 @@ private JabRefPreferences() {
         defaults.put(USE_UNIT_FORMATTER_ON_SEARCH, Boolean.TRUE);
 
         defaults.put(USE_DEFAULT_CONSOLE_APPLICATION, Boolean.TRUE);
+        defaults.put(USE_DEFAULT_FILE_BROWSER_APPLICATION, Boolean.TRUE);
         if (OS.WINDOWS) {
             defaults.put(CONSOLE_COMMAND, "C:\\Program Files\\ConEmu\\ConEmu64.exe /single /dir \"%DIR\"");
             defaults.put(ADOBE_ACROBAT_COMMAND, "C:\\Program Files (x86)\\Adobe\\Acrobat Reader DC\\Reader");
             defaults.put(SUMATRA_PDF_COMMAND, "C:\\Program Files\\SumatraPDF");
             defaults.put(USE_PDF_READER, ADOBE_ACROBAT_COMMAND);
+            defaults.put(FILE_BROWSER_COMMAND, "explorer.exe /select, \"%DIR\"");
         } else {
             defaults.put(CONSOLE_COMMAND, "");
             defaults.put(ADOBE_ACROBAT_COMMAND, "");
             defaults.put(SUMATRA_PDF_COMMAND, "");
             defaults.put(USE_PDF_READER, "");
+            defaults.put(FILE_BROWSER_COMMAND, "");
         }
 
         //versioncheck defaults

src/main/resources/l10n/JabRef_en.properties

@@ -1737,7 +1737,6 @@ Open\ console=Open console
 Use\ default\ terminal\ emulator=Use default terminal emulator
 Execute\ command=Execute command
 Note\:\ Use\ the\ placeholder\ %0\ for\ the\ location\ of\ the\ opened\ library\ file.=Note: Use the placeholder %0 for the location of the opened library file.
-Executing\ command\ \"%0\"...=Executing command \"%0\"...
 Error\ occured\ while\ executing\ the\ command\ \"%0\".=Error occured while executing the command \"%0\".
 Reformat\ ISSN=Reformat ISSN
 
@@ -2129,3 +2128,8 @@ Use\ selected\ document=Use selected document
 Accept\ changes=Accept changes
 Dismiss\ changes=Dismiss changes
 The\ library\ has\ been\ modified\ by\ another\ program.=The library has been modified by another program.
+
+Browser=Browser
+Execute\ Command=Execute Command
+Open\ File\ Browser=Open File Browser
+Use\ default\ file\ browser=Use default file browser