AS1/2/3 - highlight variables and errors on panel next to vertical scrollbar

CHANGELOG.md

@@ -21,7 +21,7 @@ All notable changes to this project will be documented in this file.
 - AS1/2/3 - highlight variable definition and all its instances on cursor place
   (also in edit mode)
 - AS1/2/3 - underline errors in the code (also in edit mode) 
-- AS1/2/3 - highlight variables and errors on scrollbar
+- AS1/2/3 - highlight variables and errors on panel next to vertical scrollbar
 
 ### Changed
 - AS1/2 - Single DoAction tag inside frame is now displayed directly as frame node

libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/ParseException.java

@@ -45,7 +45,7 @@ public abstract class ParseException extends Exception {
      * @param line Line number where the exception occurred
      */
     public ParseException(String text, long line) {
-        super("ParseException:" + text + " on line " + line);
+        super(text + " on line " + line);
         this.line = line;
         this.text = text;
         this.position = -1;
@@ -58,7 +58,7 @@ public abstract class ParseException extends Exception {
      * @param line Line number where the exception occurred
      */
     public ParseException(String text, long line, long position) {
-        super("ParseException:" + text + " on line " + line);
+        super(text + " on line " + line);
         this.line = line;
         this.text = text;
         this.position = position;

libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/avm2/parser/script/ActionScript3SimpleParser.java

@@ -212,7 +212,9 @@ public class ActionScript3SimpleParser implements SimpleParser {
                 s = lex();
             } else {
                 s = lex();
-                expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER, SymbolType.MULTIPLY);
+                if (!expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER, SymbolType.MULTIPLY)) {
+                    break;
+                }
                 String propName = s.value.toString(); //Can be *
                 int propPosition = s.position;
                 s = lex();
@@ -246,38 +248,38 @@ public class ActionScript3SimpleParser implements SimpleParser {
 
     private boolean name(List<SimpleParseException> errors, TypeItem thisType, Reference<Boolean> needsActivation, List<NamespaceItem> openedNamespaces, HashMap<String, Integer> registerVars, boolean inFunction, boolean inMethod, List<VariableOrScope> variables, List<DottedChain> importedClasses, ABC abc) throws IOException, AVM2ParseException, SimpleParseException, InterruptedException {
         ParsedSymbol s = lex();
-        DottedChain name = new DottedChain(new String[]{}, new String[]{""});
-        boolean attribute = false;
-        String name2 = "";
+
+        String lastName = "";
         if (s.type == SymbolType.ATTRIBUTE) {
-            attribute = true;
+            lastName = s.value.toString();
             s = lex();
         }
-        expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER, SymbolType.THIS, SymbolType.SUPER, SymbolType.STRING_OP);
-        name2 += s.value.toString();
+        if (!expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER, SymbolType.THIS, SymbolType.SUPER, SymbolType.STRING_OP)) {
+            return true;
+        }
+        lastName += s.value.toString();
         int identPos = s.position;
         s = lex();
         boolean attrBracket = false;
-        String nsSuffix = "";
         if (s.type == SymbolType.NAMESPACESUFFIX) {
             s = lex();
-            nsSuffix = "#" + s.value;
+            lastName += "#" + s.value;
         }
 
-        name = name.add(attribute, name2, nsSuffix);
+        String fullName = lastName;
+
         while (s.isType(SymbolType.DOT)) {
-            variables.add(new Variable(false, name.toPrintableString(true), identPos));
+            variables.add(new Variable(false, fullName, identPos));
             s = lex();
-            name2 = "";
-            attribute = false;
+            lastName = "";
             if (s.type == SymbolType.ATTRIBUTE) {
-                attribute = true;
+                lastName += s.value.toString();
                 s = lex();
                 if (s.type == SymbolType.MULTIPLY) {
-                    name2 += s.value.toString();
+                    lastName += s.value.toString();
                     identPos = s.position;
                 } else if (s.group == SymbolGroup.IDENTIFIER) {
-                    name2 += s.value.toString();
+                    lastName += s.value.toString();
                     identPos = s.position;
                 } else {
                     if (s.type != SymbolType.BRACKET_OPEN) {
@@ -287,39 +289,34 @@ public class ActionScript3SimpleParser implements SimpleParser {
                     continue;
                 }
             } else {
-                expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER, SymbolType.NAMESPACE, SymbolType.MULTIPLY);
-                name2 += s.value.toString();
+                if (!expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER, SymbolType.NAMESPACE, SymbolType.MULTIPLY)) {
+                    return true;
+                }
+                lastName = s.value.toString();
                 identPos = s.position;
             }
             s = lex();
-            nsSuffix = "";
             if (s.type == SymbolType.NAMESPACESUFFIX) {
-                nsSuffix = "#" + s.value;
+                lastName += "#" + s.value;
                 s = lex();
             }
-            name = name.add(attribute, name2, nsSuffix);
+            fullName += "." + lastName;
         }
         if (s.type == SymbolType.NAMESPACE_OP) {
-            String nsname = name.getLast();
-            boolean nsAtribute = name.isLastAttribute();
             s = lex();
             if (s.group == SymbolGroup.IDENTIFIER) {
                 String nsprop = s.value.toString();
-                variables.add(new Variable(false, (nsAtribute ? "@" : "") + nsname + "::" + nsprop, s.position));
+                variables.add(new Variable(false, lastName + "::" + nsprop, s.position));
             } else if (s.type == SymbolType.BRACKET_OPEN) {
                 expression(errors, thisType, needsActivation, importedClasses, openedNamespaces, registerVars, inFunction, inMethod, true, variables, false, abc);
                 expectedType(errors, SymbolType.BRACKET_CLOSE);
             }
-            name = name.getWithoutLast();
             s = lex();
         } else {
-            variables.add(new Variable(false, name.toPrintableString(true), identPos));
+            variables.add(new Variable(false, fullName, identPos));
         }
 
-        boolean ret = false;
-        if (!name.isEmpty()) {
-            ret = true;
-        }
+        boolean ret = true;
         if (s.type == SymbolType.BRACKET_OPEN) {
             lexer.pushback(s);
             if (attrBracket) {
@@ -333,7 +330,7 @@ public class ActionScript3SimpleParser implements SimpleParser {
         return ret;
     }
 
-    private void expected(List<SimpleParseException> errors, ParsedSymbol symb, int line, Object... expected) throws IOException, AVM2ParseException, SimpleParseException {
+    private boolean expected(List<SimpleParseException> errors, ParsedSymbol symb, int line, Object... expected) throws IOException, AVM2ParseException, SimpleParseException {
         boolean found = false;
         for (Object t : expected) {
             if (symb.type == t) {
@@ -355,6 +352,7 @@ public class ActionScript3SimpleParser implements SimpleParser {
             }
             errors.add(new SimpleParseException("" + expStr + " expected but " + symb.type + " found", line, symb.position));
         }
+        return found;
     }
 
     private ParsedSymbol expectedType(List<SimpleParseException> errors, Object... type) throws IOException, AVM2ParseException, SimpleParseException, InterruptedException {
@@ -383,7 +381,9 @@ public class ActionScript3SimpleParser implements SimpleParser {
             }
             expression(errors, thisType, needsActivation, importedClasses, openedNamespaces, registerVars, inFunction, inMethod, true, variables, false, abc);
             s = lex();
-            expected(errors, s, lexer.yyline(), SymbolType.COMMA, SymbolType.PARENT_CLOSE);
+            if (!expected(errors, s, lexer.yyline(), SymbolType.COMMA, SymbolType.PARENT_CLOSE)) {
+                break;
+            }
         }
     }
 
@@ -408,7 +408,9 @@ public class ActionScript3SimpleParser implements SimpleParser {
                 hasRest = true;
                 s = lex();
             }
-            expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER);
+            if (!expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER)) {
+                break;
+            }
 
             paramNames.add(s.value.toString());
             paramPositions.add(s.position);
@@ -513,7 +515,7 @@ public class ActionScript3SimpleParser implements SimpleParser {
         return metadata;
     }
 
-    private void classTraits(List<SimpleParseException> errors, boolean outsidePackage, Reference<Boolean> cinitNeedsActivation, List<DottedChain> importedClasses, List<NamespaceItem> openedNamespaces, String classNameStr, boolean isInterface, Reference<Boolean> iinitNeedsActivation, ABC abc, List<VariableOrScope> classVariables) throws AVM2ParseException, SimpleParseException, IOException, CompilationException, InterruptedException {
+    private void classTraits(List<SimpleParseException> errors, boolean outsidePackage, Reference<Boolean> cinitNeedsActivation, List<DottedChain> importedClasses, List<NamespaceItem> openedNamespaces, DottedChain pkg, String classNameStr, boolean isInterface, Reference<Boolean> iinitNeedsActivation, ABC abc, List<VariableOrScope> classVariables) throws AVM2ParseException, SimpleParseException, IOException, CompilationException, InterruptedException {
 
         Stack<Loop> cinitLoops = new Stack<>();
         Map<Loop, String> cinitLoopLabels = new HashMap<>();
@@ -626,6 +628,8 @@ public class ActionScript3SimpleParser implements SimpleParser {
                 s = lex();
             }
 
+            String prefix = isStatic ? pkg.addWithSuffix(classNameStr).toPrintableString(true) + "." : "this.";
+
             switch (s.type) {
                 case FUNCTION:
                     s = lex();
@@ -636,8 +640,10 @@ public class ActionScript3SimpleParser implements SimpleParser {
                         isSetter = true;
                         s = lex();
                     }
-                    expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER, SymbolType.PARENT_OPEN);
-                    String fname = null;
+                    if (!expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER, SymbolType.PARENT_OPEN)) {
+                        break;
+                    }
+                    String fname;
                     int fnamePos = s.position;
 
                     //fix for methods with name "get" or "set" - they are not getters/setters!
@@ -651,10 +657,12 @@ public class ActionScript3SimpleParser implements SimpleParser {
                             //isSetter = false;
                         } else {
                             errors.add(new SimpleParseException("Missing method name", lexer.yyline(), s.position));
+                            break;
                         }
                     } else {
                         fname = s.value.toString();
                     }
+                    classVariables.add(new Variable(true, prefix + fname, fnamePos));
                     if (fname.equals(classNameStr)) { //constructor
                         if (isStatic) {
                             errors.add(new SimpleParseException("Constructor cannot be static", lexer.yyline(), s.position));
@@ -709,9 +717,13 @@ public class ActionScript3SimpleParser implements SimpleParser {
                         errors.add(new SimpleParseException("Interface cannot have namespace fields", lexer.yyline(), s.position));
                     }
                     s = lex();
-                    expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER);
+                    if (!expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER)) {
+                        break;
+                    }
                     String nname = s.value.toString();
                     int npos = s.position;
+
+                    classVariables.add(new Variable(true, prefix + nname, npos));
                     s = lex();
 
                     if (s.type == SymbolType.ASSIGN) {
@@ -739,8 +751,10 @@ public class ActionScript3SimpleParser implements SimpleParser {
                     }
 
                     s = lex();
-                    expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER);
-                    classVariables.add(new Variable(true, s.value.toString(), s.position));
+                    if (!expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER)) {
+                        break;
+                    }
+                    classVariables.add(new Variable(true, prefix + s.value.toString(), s.position));
                     s = lex();
 
                     if (s.type == SymbolType.NAMESPACESUFFIX) {
@@ -909,8 +923,12 @@ public class ActionScript3SimpleParser implements SimpleParser {
                     String subNameStr;
 
                     s = lex();
-                    expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER);
+                    if (!expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER)) {
+                        break;
+                    }
                     subNameStr = s.value.toString();
+                    int subNamePos = s.position;
+                    sinitVariables.add(new Variable(true, pkgName.addWithSuffix(subNameStr).toPrintableString(true), subNamePos));
                     s = lex();
 
                     if (s.type == SymbolType.NOT) {
@@ -946,7 +964,7 @@ public class ActionScript3SimpleParser implements SimpleParser {
                     Reference<Boolean> iinitNeedsActivation = new Reference<>(false);
                     List<VariableOrScope> classVariables = new ArrayList<>();
 
-                    classTraits(errors, !inPackage, cinitNeedsActivation, importedClasses, subOpenedNamespaces, subNameStr, isInterface, iinitNeedsActivation, abc, classVariables);
+                    classTraits(errors, !inPackage, cinitNeedsActivation, importedClasses, subOpenedNamespaces, pkgName, subNameStr, isInterface, iinitNeedsActivation, abc, classVariables);
 
                     sinitVariables.add(new ClassScope(classVariables));
 
@@ -969,7 +987,9 @@ public class ActionScript3SimpleParser implements SimpleParser {
                     }
 
                     s = lex();
-                    expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER);
+                    if (!expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER)) {
+                        break;
+                    }
                     sinitVariables.add(new Variable(true, s.value.toString(), s.position));
                     s = lex();
                     if (s.type == SymbolType.COLON) {
@@ -993,8 +1013,11 @@ public class ActionScript3SimpleParser implements SimpleParser {
                         errors.add(new SimpleParseException("Final flag not allowed for namespaces", lexer.yyline(), s.position));
                     }
                     s = lex();
-                    expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER);
+                    if (!expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER)) {
+                        break;
+                    }
                     sinitVariables.add(new Variable(true, s.value.toString(), s.position));
+
                     s = lex();
 
                     if (s.type == SymbolType.ASSIGN) {
@@ -1205,7 +1228,9 @@ public class ActionScript3SimpleParser implements SimpleParser {
                 case VAR:
                 case CONST:
                     s = lex();
-                    expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER);
+                    if (!expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER)) {
+                        break;
+                    }
                     String varIdentifier = s.value.toString();
                     int varPos = s.position;
                     s = lex();
@@ -1410,8 +1435,9 @@ public class ActionScript3SimpleParser implements SimpleParser {
                     while (s.type == SymbolType.CATCH) {
                         expectedType(errors, SymbolType.PARENT_OPEN);
                         s = lex();
-                        expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER, SymbolType.THIS, SymbolType.SUPER, SymbolType.STRING_OP);
-
+                        if (!expected(errors, s, lexer.yyline(), SymbolGroup.IDENTIFIER, SymbolType.THIS, SymbolType.SUPER, SymbolType.STRING_OP)) {
+                            break;
+                        }
                         String enamestr = s.value.toString();
                         int ePos = s.position;
                         expectedType(errors, SymbolType.COLON);

libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/action/parser/script/ActionScript2SimpleParser.java

@@ -153,7 +153,9 @@ public class ActionScript2SimpleParser implements SimpleParser {
             }
             expression(errors, inFunction, inMethod, inTellTarget, true, variables, false, hasEval);
             s = lex();
-            expected(errors, s, lexer.yyline(), SymbolType.COMMA, SymbolType.PARENT_CLOSE);
+            if (!expected(errors, s, lexer.yyline(), SymbolType.COMMA, SymbolType.PARENT_CLOSE)) {
+                break;
+            }
         }
         return ret;
     }
@@ -181,7 +183,9 @@ public class ActionScript2SimpleParser implements SimpleParser {
             }
 
             if (!s.isType(SymbolType.COMMA, SymbolType.PARENT_CLOSE)) {
-                expected(errors, s, lexer.yyline(), SymbolType.COMMA, SymbolType.PARENT_CLOSE);
+                if (!expected(errors, s, lexer.yyline(), SymbolType.COMMA, SymbolType.PARENT_CLOSE)) {
+                    break;
+                }                        
             }
         }
         List<VariableOrScope> subvariables = new ArrayList<>();
@@ -1620,16 +1624,15 @@ public class ActionScript2SimpleParser implements SimpleParser {
             } else {
                 lexer.pushback(symb);
             }            
+            Reference<Boolean> hasEval = new Reference<>(false);
+            commands(errors, false, false, 0, false, vars, hasEval);
+            
             if (inOnHandler) {
                 expectedType(errors, SymbolType.CURLY_CLOSE);
             }            
             if (lexer.lex().type != SymbolType.EOF) {
                 errors.add(new SimpleParseException("Parsing finished before end of the file", lexer.yyline(), lexer.yychar()));
             }
-
-            Reference<Boolean> hasEval = new Reference<>(false);
-            commands(errors, false, false, 0, false, vars, hasEval);
-
         } catch (ActionParseException ex) {
             errors.add(new SimpleParseException(ex.getMessage(), ex.line, ex.position));
         }

src/com/jpexs/decompiler/flash/gui/editor/HighlightsPanel.java

@@ -0,0 +1,208 @@
+/*
+ * Copyright (C) 2025 JPEXS
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.jpexs.decompiler.flash.gui.editor;
+
+import com.jpexs.decompiler.flash.gui.AppStrings;
+import java.awt.Color;
+import java.awt.Cursor;
+import java.awt.Dimension;
+import java.awt.Graphics;
+import java.awt.Rectangle;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.util.HashSet;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.Set;
+import javax.swing.JPanel;
+import javax.swing.JScrollBar;
+import javax.swing.JScrollPane;
+import javax.swing.SwingUtilities;
+import javax.swing.plaf.ScrollBarUI;
+import javax.swing.text.BadLocationException;
+import javax.swing.text.Highlighter;
+import jsyntaxpane.actions.ActionUtils;
+import jsyntaxpane.components.Markers;
+
+/**
+ *
+ * @author JPEXS
+ */
+public class HighlightsPanel extends JPanel {
+
+    private final LineMarkedEditorPane editorPane;
+    private Cursor HAND_CURSOR = Cursor.getPredefinedCursor(Cursor.HAND_CURSOR);
+    private Cursor DEFAULT_CURSOR = Cursor.getDefaultCursor();
+    private Map<Integer, String> errors = new LinkedHashMap<>();
+    private int scrollBarButtonSize = 0;
+    private JScrollPane scrollPane;
+
+    public HighlightsPanel(LineMarkedEditorPane editorPane) {
+        this.editorPane = editorPane;
+
+        scrollPane = (JScrollPane) SwingUtilities.getAncestorOfClass(JScrollPane.class, editorPane);
+
+        JScrollBar bar = new JScrollBar(JScrollBar.VERTICAL, 0, 1, 0, 100);
+        scrollBarButtonSize = bar.getPreferredSize().width;
+        setPreferredSize(new Dimension(16, Integer.MAX_VALUE));
+        addMouseListener(new MouseAdapter() {
+            @Override
+            public void mouseClicked(MouseEvent e) {
+                if (!SwingUtilities.isLeftMouseButton(e)) {
+                    return;
+                }
+                int totalLineCount = ActionUtils.getLineCount(editorPane);
+                Rectangle r = getScrollbarTrackRect();
+                int line = (e.getY() - r.y) * totalLineCount / r.height;
+                int linesCountPer1Px = totalLineCount / r.height;
+                if (!scrollPane.getVerticalScrollBar().isVisible()) {
+                    linesCountPer1Px = 0;
+                }
+
+                for (Highlighter.Highlight highlight : editorPane.getHighlighter().getHighlights()) {
+                    Highlighter.HighlightPainter painter = highlight.getPainter();
+                    if (painter instanceof Markers.SimpleMarker) {
+                        try {
+                            int lineNum = ActionUtils.getLineNumber(editorPane, highlight.getStartOffset());
+                            if (lineNum >= line - linesCountPer1Px && lineNum <= line + linesCountPer1Px) {
+                                editorPane.setCaretPosition(highlight.getStartOffset());
+                                return;
+                            }
+                        } catch (BadLocationException ex) {
+                            //ignore
+                        }
+                    }
+                }
+            }
+        });
+        addMouseMotionListener(new MouseAdapter() {
+            @Override
+            public void mouseMoved(MouseEvent e) {
+                int totalLineCount = ActionUtils.getLineCount(editorPane);
+                Rectangle r = getScrollbarTrackRect();
+                int line = (e.getY() - r.y) * totalLineCount / r.height;
+
+                int linesCountPer1Px = totalLineCount / r.height;
+                if (!scrollPane.getVerticalScrollBar().isVisible()) {
+                    linesCountPer1Px = 0;
+                }
+
+                int lineStart = line * r.height / totalLineCount;
+                int lineEnd = (line + 1) * r.height / totalLineCount;
+                if (e.getY() - r.y < lineStart - 1 || e.getY() - r.y > lineStart + 2) {
+                    if (getCursor() != DEFAULT_CURSOR) {
+                        setCursor(DEFAULT_CURSOR);
+                    }
+
+                    setToolTipText(null);
+                    return;
+                }
+
+                int currentLine = editorPane.getLine();
+
+                for (Highlighter.Highlight highlight : editorPane.getHighlighter().getHighlights()) {
+                    Highlighter.HighlightPainter painter = highlight.getPainter();
+                    if (painter instanceof Markers.SimpleMarker) {
+                        try {
+                            int lineNum = ActionUtils.getLineNumber(editorPane, highlight.getStartOffset());
+                            if (lineNum >= line - linesCountPer1Px && lineNum <= line + linesCountPer1Px) {
+                                if (line != currentLine) {
+                                    if (getCursor() != HAND_CURSOR) {
+                                        setCursor(HAND_CURSOR);
+                                    }
+                                }
+                                if (errors.containsKey(highlight.getStartOffset())) {
+                                    setToolTipText(AppStrings.translate("highlighter.error").replace("%error%", errors.get(highlight.getStartOffset())));
+                                    return;
+                                }
+                                if (line != currentLine && painter instanceof OccurencesMarker) {
+                                    setToolTipText(AppStrings.translate("highlighter.occurences"));
+                                    return;
+                                }
+
+                                if (line == currentLine) {
+                                    setToolTipText(AppStrings.translate("highlighter.currentLine"));
+                                }
+                                return;
+                            }
+                        } catch (BadLocationException ex) {
+                            //ignore
+                        }
+                    }
+                }
+
+                if (getCursor() != DEFAULT_CURSOR) {
+                    setCursor(DEFAULT_CURSOR);
+                }
+
+                setToolTipText(null);
+            }
+        });
+    }
+
+    public void setErrors(Map<Integer, String> errors) {
+        this.errors = errors;
+    }
+
+    private Rectangle getScrollbarTrackRect() {
+        return new Rectangle(0, scrollBarButtonSize, 16, getHeight() + - 2 * scrollBarButtonSize);
+    }
+
+    @Override
+    protected void paintComponent(Graphics g) {
+        super.paintComponent(g);
+        Rectangle r = getScrollbarTrackRect();
+
+        int totalLineCount = ActionUtils.getLineCount(editorPane);
+        int h = 3;
+        Highlighter.Highlight[] highlights = editorPane.getHighlighter().getHighlights();
+        Set<Integer> ignoredLines = new HashSet<>();
+        int currentLine = editorPane.getLine();
+
+        for (Highlighter.Highlight highlight : highlights) {
+            Highlighter.HighlightPainter painter = highlight.getPainter();
+            if (painter instanceof Markers.SimpleMarker) {
+                Markers.SimpleMarker simpleMarker = (Markers.SimpleMarker) painter;
+                g.setColor(simpleMarker.getColor());
+
+                try {
+                    int line = ActionUtils.getLineNumber(editorPane, highlight.getStartOffset());
+
+                    //prefer error lines
+                    if (painter instanceof WavyUnderLinePainter) {
+                        ignoredLines.add(line);
+                    } else if (ignoredLines.contains(line)) {
+                        continue;
+                    }
+                    float ratio = (float) line / totalLineCount;
+                    int y = r.y + (int) (ratio * r.height);
+                    g.fillRect(0, y, getWidth(), h);
+                } catch (BadLocationException ex) {
+                    //ignore
+                }
+            }
+        }
+
+        if (currentLine >= 0) {
+            float ratio = (float) currentLine / totalLineCount;
+            int y = r.y + (int) (ratio * r.height) + 1;
+            g.setColor(Color.gray);
+            g.fillRect(0, y, getWidth(), 1);
+            g.fillOval(16 / 2 - 2, y - 1, 3, 3);
+        }
+    }
+}

src/com/jpexs/decompiler/flash/gui/editor/OccurencesMarker.java

@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2025 JPEXS
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.jpexs.decompiler.flash.gui.editor;
+
+import java.awt.Color;
+import jsyntaxpane.components.Markers;
+
+/**
+ *
+ * @author JPEXS
+ */
+public class OccurencesMarker extends Markers.SimpleMarker {
+
+    public OccurencesMarker(Color color) {
+        super(color);
+    }
+}

src/com/jpexs/decompiler/flash/gui/editor/ScrollbarOverlay.java

@@ -1,89 +0,0 @@
-/*
- * Copyright (C) 2025 JPEXS
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-package com.jpexs.decompiler.flash.gui.editor;
-
-import java.awt.Color;
-import java.awt.Graphics;
-import java.awt.Rectangle;
-import java.util.HashSet;
-import java.util.LinkedHashMap;
-import java.util.Map;
-import java.util.Set;
-import javax.swing.JComponent;
-import javax.swing.JLayer;
-import javax.swing.JScrollBar;
-import javax.swing.plaf.LayerUI;
-import javax.swing.plaf.ScrollBarUI;
-import jsyntaxpane.actions.ActionUtils;
-
-/**
- *
- * @author JPEXS
- */
-public class ScrollbarOverlay extends LayerUI<JScrollBar> {
-
-    private final LineMarkedEditorPane editorPane;
-    private final Map<Integer, Color> markedLines = new LinkedHashMap<>();
-
-    public ScrollbarOverlay(LineMarkedEditorPane editorPane) {
-        this.editorPane = editorPane;
-    }
-
-    public void removeMarkers(Color color) {
-        Set<Integer> lines = new HashSet<>(markedLines.keySet());
-        for (int key : lines) {
-            if (markedLines.get(key).equals(color)) {
-                markedLines.remove(key);
-            }
-        }
-    }
-
-    public void clearMarkers() {
-        markedLines.clear();
-    }
-
-    public void addMarker(int line, Color color) {
-        markedLines.put(line, color);
-    }
-
-    public void setMarkedLines(Map<Integer, Color> markedLines) {
-        this.markedLines.clear();
-        this.markedLines.putAll(markedLines);
-    }
-
-    @Override
-    public void paint(Graphics g, JComponent c) {
-        super.paint(g, c);
-        JScrollBar bar = (JScrollBar) ((JLayer<?>) c).getView();
-        ScrollBarUI ui = bar.getUI();
-        Rectangle r;
-        if (ui instanceof TrackRectSubstanceScrollbarUI) {
-            r = ((TrackRectSubstanceScrollbarUI) ui).getTrackBounds();
-        } else {
-            r = new Rectangle(0, 16, 16, bar.getHeight() - 32);
-        }
-
-        int totalLineCount = ActionUtils.getLineCount(editorPane);
-        for (Map.Entry<Integer, Color> entry : markedLines.entrySet()) {
-            g.setColor(entry.getValue());
-
-            float ratio = (float) entry.getKey() / totalLineCount;
-            int y = r.y + (int) (ratio * r.height);
-            g.drawLine(0, y, bar.getWidth(), y);
-        }
-    }
-}

src/com/jpexs/decompiler/flash/gui/editor/VariableMarker.java

@@ -75,7 +75,7 @@ public class VariableMarker implements SyntaxComponent, CaretListener, PropertyC
     private static final Color SCROLLBAR_ERROR_COLOR = new Color(0xff0000);
     private JEditorPane pane;
     private final Set<TokenType> tokenTypes = new HashSet<>();
-    private Markers.SimpleMarker marker;
+    private OccurencesMarker marker;
     private Markers.SimpleMarker errorMarker;
     private Status status;
     private Map<Integer, String> errors = new LinkedHashMap<>();
@@ -87,9 +87,7 @@ public class VariableMarker implements SyntaxComponent, CaretListener, PropertyC
 
     private MouseMotionAdapter mouseMotionAdapter;
 
-    private JLayer<JScrollBar> layer;
-
-    private ScrollbarOverlay scrollbarOverlay;
+    private HighlightsPanel highlightsPanel;
 
     private ScrollPaneUI originalScrollPaneUI;
 
@@ -120,7 +118,7 @@ public class VariableMarker implements SyntaxComponent, CaretListener, PropertyC
             if (token != null && tokenTypes.contains(token.type)) {
                 addMarkers(token);
             }
-            layer.repaint();
+            highlightsPanel.repaint();
         }
     }
 
@@ -129,12 +127,10 @@ public class VariableMarker implements SyntaxComponent, CaretListener, PropertyC
      */
     public void removeMarkers() {
         Markers.removeMarkers(pane, marker);
-        scrollbarOverlay.removeMarkers(SCROLLBAR_VARIABLE_COLOR);
     }
 
     public void removeErrorMarkers() {
         Markers.removeMarkers(pane, errorMarker);
-        scrollbarOverlay.removeMarkers(SCROLLBAR_ERROR_COLOR);
     }
 
     private Token getIdentifierTokenAt(SyntaxDocument sDoc, int pos) {
@@ -188,6 +184,8 @@ public class VariableMarker implements SyntaxComponent, CaretListener, PropertyC
     }
 
     void addErrorMarkers() {
+        highlightsPanel.setErrors(errors);
+        
         SyntaxDocument doc = ActionUtils.getSyntaxDocument(pane);
         if (doc == null) {
             return;
@@ -197,10 +195,9 @@ public class VariableMarker implements SyntaxComponent, CaretListener, PropertyC
             Token token = getNearestTokenAt(doc, position);
             if (token != null) {
                 Markers.markToken(pane, token, errorMarker);
-                markPositionOnScrollbar(position, SCROLLBAR_ERROR_COLOR);
             }
         }
-        layer.repaint();
+        highlightsPanel.repaint();
         doc.readUnlock();
     }
 
@@ -220,12 +217,10 @@ public class VariableMarker implements SyntaxComponent, CaretListener, PropertyC
         if (definitionToken != null) {
             if (definitionPosToReferences.containsKey(definitionPos)) {
                 Markers.markToken(pane, definitionToken, marker);
-                markPositionOnScrollbar(definitionToken.start, SCROLLBAR_VARIABLE_COLOR);
                 for (int i : definitionPosToReferences.get(definitionPos)) {
                     Token referenceToken = getIdentifierTokenAt(sDoc, i);
                     if (referenceToken != null) {
                         Markers.markToken(pane, referenceToken, marker);
-                        markPositionOnScrollbar(referenceToken.start, SCROLLBAR_VARIABLE_COLOR);
                     }
                 }
             }
@@ -233,19 +228,11 @@ public class VariableMarker implements SyntaxComponent, CaretListener, PropertyC
         sDoc.readUnlock();
     }
 
-    private void markPositionOnScrollbar(int position, Color color) {
-        try {
-            scrollbarOverlay.addMarker(ActionUtils.getLineNumber(pane, position), color);
-        } catch (BadLocationException ex) {
-            //ignore
-        }
-    }
-
     @Override
     public void config(Configuration config) {
         Color markerColor = config.getColor(PROPERTY_COLOR, DEFAULT_COLOR);
         Color errorColor = config.getColor(PROPERTY_ERRORCOLOR, DEFAULT_ERRORCOLOR);
-        this.marker = new Markers.SimpleMarker(markerColor);
+        this.marker = new OccurencesMarker(markerColor);
         this.errorMarker = new WavyUnderLinePainter(errorColor); //Markers.SimpleMarker(errorColor);
         String types = config.getString(
                 PROPERTY_TOKENTYPES, DEFAULT_TOKENTYPES);
@@ -290,13 +277,10 @@ public class VariableMarker implements SyntaxComponent, CaretListener, PropertyC
             verticalScrollBar.setUI(new TrackRectSubstanceScrollbarUI(verticalScrollBar));
         }
 
-        scrollbarOverlay = new ScrollbarOverlay((LineMarkedEditorPane) pane);
-
-        layer = new JLayer<>(verticalScrollBar, scrollbarOverlay);
-        scrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_NEVER);
-
+        highlightsPanel = new HighlightsPanel((LineMarkedEditorPane) pane);
+        //scrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);
         JPanel panel = (JPanel) SwingUtilities.getAncestorOfClass(JPanel.class, scrollPane);
-        panel.add(layer, BorderLayout.EAST);
+        panel.add(highlightsPanel, BorderLayout.EAST);
 
         documentUpdated();
         markTokenAt(editor.getCaretPosition());
@@ -335,8 +319,8 @@ public class VariableMarker implements SyntaxComponent, CaretListener, PropertyC
         }
         JScrollPane scrollPane = (JScrollPane) SwingUtilities.getAncestorOfClass(JScrollPane.class, editor);
         JPanel panel = (JPanel) SwingUtilities.getAncestorOfClass(JPanel.class, scrollPane);
-        panel.remove(layer);
-        scrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED);
+        panel.remove(highlightsPanel);
+        //scrollPane.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED);
         panel.revalidate();
         panel.repaint();
         scrollPane.setUI(originalScrollPaneUI);
@@ -362,7 +346,7 @@ public class VariableMarker implements SyntaxComponent, CaretListener, PropertyC
     private void documentUpdated() {
         errors.clear();
         removeErrorMarkers();
-        layer.repaint();
+        highlightsPanel.repaint();
         try {
             SyntaxDocument sDoc = (SyntaxDocument) pane.getDocument();
 
@@ -393,7 +377,6 @@ public class VariableMarker implements SyntaxComponent, CaretListener, PropertyC
             definitionPosToReferences.clear();
             referenceToDefinition.clear();
             errors.put((int) ex.position, ex.getMessage());            
-            ex.printStackTrace();
         }
         Timer tim = errorsTimer;
         if (tim != null) {

src/com/jpexs/decompiler/flash/gui/locales/MainFrame.properties

@@ -1058,3 +1058,7 @@ work.debugging.start = Starting Flash content debugger
 menu.file.view.alwaysOnTop = Always on top
 
 contextmenu.showDetail = Show detail
+
+highlighter.occurences = Mark occurences
+highlighter.currentLine = Current line
+highlighter.error = Error: %error%