Add warning methods to QgsCodeEditorWidget

These call the underlying QgsCodeEditor methods to show inline
warnings, but also add corresponding highlights on the scroll bar

python/PyQt6/gui/auto_generated/codeeditors/qgscodeeditorwidget.sip.in

@@ -70,6 +70,26 @@ Returns the message bar associated with the widget, to use for user feedback.
 %Docstring
 Returns the scrollbar highlight controller, which can be used to add highlights
 in the code editor scrollbar.
+%End
+
+    void addWarning( int lineNumber, const QString &warning );
+%Docstring
+Adds a ``warning`` message and indicator to the specified a ``lineNumber``.
+
+This method calls :py:func:`QgsCodeEditor.addWarning()`, but also automatically adds
+highlights to the widget scrollbars locating the warning location.
+
+.. seealso:: :py:func:`clearWarnings`
+%End
+
+    void clearWarnings();
+%Docstring
+Clears all warning messages from the editor.
+
+This method calls :py:func:`QgsCodeEditor.clearWarnings()`, but also removes
+highlights from the widget scrollbars at the warning locations.
+
+.. seealso:: :py:func:`addWarning`
 %End
 
   public slots:

python/console/console_editor.py

@@ -91,6 +91,7 @@ def __init__(self,
         self.editor_tab: EditorTab = editor_tab
         self.console_widget: PythonConsoleWidget = console_widget
         self.tab_widget: EditorTabWidget = tab_widget
+        self.code_editor_widget: Optional[QgsCodeEditorWidget] = None
 
         self.path: Optional[str] = None
         #  recent modification time
@@ -384,7 +385,7 @@ def goToLine(self, objName, linenr):
         self.setFocus()
 
     def syntaxCheck(self):
-        self.clearWarnings()
+        self.code_editor_widget.clearWarnings()
         source = self.text().encode("utf-8")
         try:
             compile(source, "", "exec")
@@ -393,7 +394,7 @@ def syntaxCheck(self):
             eline -= 1
             ecolumn = detail.offset or 1
             edescr = detail.msg
-            self.addWarning(eline, edescr)
+            self.code_editor_widget.addWarning(eline, edescr)
             self.setCursorPosition(eline, ecolumn - 1)
             self.ensureLineVisible(eline)
             return False
@@ -546,6 +547,7 @@ def __init__(self,
         self._editor_code_widget = QgsCodeEditorWidget(
             self._editor
         )
+        self._editor.code_editor_widget = self._editor_code_widget
         self._editor_code_widget.searchBarToggled.connect(
             self.search_bar_toggled
         )

python/gui/auto_generated/codeeditors/qgscodeeditorwidget.sip.in

@@ -70,6 +70,26 @@ Returns the message bar associated with the widget, to use for user feedback.
 %Docstring
 Returns the scrollbar highlight controller, which can be used to add highlights
 in the code editor scrollbar.
+%End
+
+    void addWarning( int lineNumber, const QString &warning );
+%Docstring
+Adds a ``warning`` message and indicator to the specified a ``lineNumber``.
+
+This method calls :py:func:`QgsCodeEditor.addWarning()`, but also automatically adds
+highlights to the widget scrollbars locating the warning location.
+
+.. seealso:: :py:func:`clearWarnings`
+%End
+
+    void clearWarnings();
+%Docstring
+Clears all warning messages from the editor.
+
+This method calls :py:func:`QgsCodeEditor.clearWarnings()`, but also removes
+highlights from the widget scrollbars at the warning locations.
+
+.. seealso:: :py:func:`addWarning`
 %End
 
   public slots:

src/gui/codeeditors/qgscodeeditorwidget.cpp

@@ -26,6 +26,8 @@
 #include <QCheckBox>
 #include <QShortcut>
 
+constexpr int WARNING_HIGHLIGHT_CATEGORY = 48;
+
 QgsCodeEditorWidget::QgsCodeEditorWidget(
   QgsCodeEditor *editor,
   QgsMessageBar *messageBar,
@@ -192,6 +194,29 @@ QgsScrollBarHighlightController *QgsCodeEditorWidget::scrollbarHighlightControll
   return mHighlightController.get();
 }
 
+void QgsCodeEditorWidget::addWarning( int lineNumber, const QString &warning )
+{
+  mEditor->addWarning( lineNumber, warning );
+
+  mHighlightController->addHighlight(
+    QgsScrollBarHighlight(
+      WARNING_HIGHLIGHT_CATEGORY,
+      lineNumber,
+      QColor( 255, 0, 0 ),
+      QgsScrollBarHighlight::Priority::HighestPriority
+    )
+  );
+}
+
+void QgsCodeEditorWidget::clearWarnings()
+{
+  mEditor->clearWarnings();
+
+  mHighlightController->removeHighlights(
+    WARNING_HIGHLIGHT_CATEGORY
+  );
+}
+
 void QgsCodeEditorWidget::showSearchBar()
 {
   addSearchHighlights();

src/gui/codeeditors/qgscodeeditorwidget.h

@@ -86,6 +86,26 @@ class GUI_EXPORT QgsCodeEditorWidget : public QgsPanelWidget
      */
     QgsScrollBarHighlightController *scrollbarHighlightController();
 
+    /**
+     * Adds a \a warning message and indicator to the specified a \a lineNumber.
+     *
+     * This method calls QgsCodeEditor::addWarning(), but also automatically adds
+     * highlights to the widget scrollbars locating the warning location.
+     *
+     * \see clearWarnings()
+     */
+    void addWarning( int lineNumber, const QString &warning );
+
+    /**
+     * Clears all warning messages from the editor.
+     *
+     * This method calls QgsCodeEditor::clearWarnings(), but also removes
+     * highlights from the widget scrollbars at the warning locations.
+     *
+     * \see addWarning()
+     */
+    void clearWarnings();
+
   public slots:
 
     /**