Fix for issue 5463

CHANGELOG.md

@@ -47,9 +47,12 @@ We refer to [GitHub issues](https://github.com/JabRef/jabref/issues) by using `#
 - We fixed some display errors in the preferences dialog and replaced some of the controls [#5033](https://github.com/JabRef/jabref/pull/5033) [#5047](https://github.com/JabRef/jabref/pull/5047) [#5062](https://github.com/JabRef/jabref/pull/5062) [#5141](https://github.com/JabRef/jabref/pull/5141) [#5185](https://github.com/JabRef/jabref/pull/5185) [#5265](https://github.com/JabRef/jabref/pull/5265) [#5315](https://github.com/JabRef/jabref/pull/5315) [#5360](https://github.com/JabRef/jabref/pull/5360)
 - We fixed an exception which occurred when trying to import entries without an open library. [#5447](https://github.com/JabRef/jabref/issues/5447) 
 - After successful import of one or multiple bib entries the main table scrolls to the first imported entry [#5383](https://github.com/JabRef/jabref/issues/5383)
+
 - We fixed an exception which occurred when an invalid jstyle was loaded. [#5452](https://github.com/JabRef/jabref/issues/5452)
 
 
+- We fixed an error where preview theme did not change when the preerences were set in "Dark" mode [#5463](https://github.com/JabRef/jabref/issues/5463)
+
 ### Removed
 
 

src/main/java/org/jabref/gui/preview/Dark_preview.css

@@ -0,0 +1,57 @@
+.root {
+    -jr-theme: #2c9490;
+    -jr-accent: #255652;
+    -jr-selected: -jr-accent;
+    -jr-hover: #fff1;
+
+
+    -jr-red: #b71c1f;
+    -jr-light-red: #db1d2b;
+    -jr-green: #1cb631;
+    -jr-light-green: #28d93c;
+    -jr-blue: #2c2cb7;
+    -jr-light-blue: #3a3ad9;
+    -jr-purple: #b72486;
+    -jr-light-purple: #d927a8;
+    -jr-yellow: #b5b021;
+    -jr-orange: #b77620;
+
+    -jr-base: #141824;
+
+    -jr-background-alt: #151924;
+    -jr-menu-background: #141824;
+    -jr-toolbar: -jr-menu-background;
+    -jr-sidepane-background: #212330;
+    -jr-search-background: #2c2e3b;
+
+    -jr-sidepane-header-background: -jr-background-alt;
+    -jr-group-hits-bg: -jr-background-alt;
+    -jr-group-hits-fg: -fx-light-text-color;
+    -fx-control-inner-background: #272b38;
+
+    -fx-control-inner-background-alt: -fx-control-inner-background;
+
+    -fx-dark-text-color: black;
+    -fx-mid-text-color: #7d8591;
+    -fx-light-text-color: #9aa3af;
+    -jr-separator: #333744;
+    -fx-outer-border: #424758;
+
+    -jr-icon: -fx-light-text-color;
+    -jr-icon-active: derive(-fx-light-text-color, 50%);
+    -jr-icon-background-active: -jr-hover;
+    -jr-icon-background-armed: #fff2;
+
+    -jr-menu-foreground: -fx-light-text-color;
+    -jr-menu-item-foreground: -fx-light-text-color;
+    -jr-menu-forground-active: derive(-fx-light-text-color, 50%);
+
+    -fx-focused-text-base-color: -fx-dark-text-color;
+
+    -jr-tooltip-fg: derive(-fx-light-text-color, 50%);
+
+}
+body{
+    background-color: #212330; /* jr-sidepane-background*/
+    color:#7d8591;/* -fx-light-text-color*/
+}

src/main/java/org/jabref/gui/preview/PreviewPanel.java

@@ -43,7 +43,6 @@ public class PreviewPanel extends VBox {
     private final JabRefPreferences preferences;
     private BibEntry entry;
     private DialogService dialogService;
-
     public PreviewPanel(BibDatabaseContext database, DialogService dialogService, ExternalFileTypes externalFileTypes, KeyBindingRepository keyBindingRepository, JabRefPreferences preferences) {
         this.keyBindingRepository = keyBindingRepository;
         this.dialogService = dialogService;
@@ -54,6 +53,7 @@ public PreviewPanel(BibDatabaseContext database, DialogService dialogService, Ex
         previewView = new PreviewViewer(database, dialogService, Globals.stateManager);
         previewView.setLayout(previewPreferences.getCurrentPreviewStyle());
         previewView.setContextMenu(createPopupMenu());
+        previewView.setTheme(this.preferences.get(JabRefPreferences.FX_THEME));
         previewView.setOnDragDetected(event -> {
             previewView.startFullDrag();
 
@@ -99,6 +99,7 @@ public PreviewPanel(BibDatabaseContext database, DialogService dialogService, Ex
 
         createKeyBindings();
         updateLayout(previewPreferences, true);
+
     }
 
     public void updateLayout(PreviewPreferences previewPreferences) {

src/main/java/org/jabref/gui/preview/PreviewViewer.java

@@ -97,9 +97,7 @@ public PreviewViewer(BibDatabaseContext database, DialogService dialogService, S
         previewView = new WebView();
         setContent(previewView);
         previewView.setContextMenuEnabled(false);
-
         previewView.getEngine().getLoadWorker().stateProperty().addListener((observable, oldValue, newValue) -> {
-
             if (newValue != Worker.State.SUCCEEDED) {
                 return;
             }
@@ -111,7 +109,11 @@ public PreviewViewer(BibDatabaseContext database, DialogService dialogService, S
         });
 
     }
-
+    public void setTheme(String theme){
+        if(theme.equals("Dark.css")){
+            previewView.getEngine().setUserStyleSheetLocation(getClass().getResource("Dark_preview.css").toString());
+        }
+    }
     private void highlightSearchPattern() {
         if (searchHighlightPattern.isPresent()) {
             String pattern = searchHighlightPattern.get().pattern().replace("\\Q", "").replace("\\E", "");