Restored current line/current selected lines display on lower left of the IDE. Fixes #3134

Author: Federico Fissore

app/src/processing/app/Editor.java

@@ -251,7 +251,7 @@ public void windowDeactivated(WindowEvent e) {
     console.setBorder(null);
     consolePanel.add(console, BorderLayout.CENTER);
 
-    lineStatus = new EditorLineStatus(textarea);
+    lineStatus = new EditorLineStatus();
     consolePanel.add(lineStatus, BorderLayout.SOUTH);
 
     // RTextScrollPane
@@ -957,7 +957,7 @@ protected String findClassInZipFile(String base, File file) {
 
 
   protected SketchTextArea createTextArea() throws IOException {
-    SketchTextArea textArea = new SketchTextArea(base.getPdeKeywords());
+    final SketchTextArea textArea = new SketchTextArea(base.getPdeKeywords());
     textArea.requestFocusInWindow();
     textArea.setMarkOccurrences(PreferencesData.getBoolean("editor.advanced"));
     textArea.setMarginLineEnabled(false);
@@ -976,6 +976,17 @@ public void hyperlinkUpdate(HyperlinkEvent hyperlinkEvent) {
         }
       }
     });
+    textArea.addCaretListener(new CaretListener() {
+
+      @Override
+      public void caretUpdate(CaretEvent e) {
+        int lineStart = textArea.getDocument().getDefaultRootElement().getElementIndex(e.getMark());
+        int lineEnd = textArea.getDocument().getDefaultRootElement().getElementIndex(e.getDot());
+
+        lineStatus.set(lineStart, lineEnd);
+      }
+
+    });
 
     ToolTipManager.sharedInstance().registerComponent(textArea);
 

app/src/processing/app/EditorLineStatus.java

@@ -37,8 +37,6 @@
  * Li'l status bar fella that shows the line number.
  */
 public class EditorLineStatus extends JComponent {
-  SketchTextArea textarea;
-  
   int start = -1, stop;
 
   Image resize;
@@ -55,11 +53,7 @@ public class EditorLineStatus extends JComponent {
   String serialport = "";
 
 
-  public EditorLineStatus(SketchTextArea textarea) {
-    
-    this.textarea = textarea;
-    textarea.setEditorLineStatus(this);
-
+  public EditorLineStatus() {
     background = Theme.getColor("linestatus.bgcolor");
     font = Theme.getFont("linestatus.font");
     foreground = Theme.getColor("linestatus.color");

app/src/processing/app/syntax/SketchTextArea.java

@@ -76,11 +76,6 @@ public class SketchTextArea extends RSyntaxTextArea {
    */
   private FocusableTip docTooltip;
 
-  /**
-   * The component that tracks the current line number.
-   */
-  protected EditorLineStatus editorLineStatus;
-
   private EditorListener editorListener;
 
   private final PdeKeywords pdeKeywords;
@@ -168,14 +163,9 @@ private void removeCTRLTabFromFocusTraversal() {
   }
 
 
-  public void setEditorLineStatus(EditorLineStatus editorLineStatus) {
-    this.editorLineStatus = editorLineStatus;
-  }
-
   @Override
   public void select(int selectionStart, int selectionEnd) {
     super.select(selectionStart, selectionEnd);
-    if (editorLineStatus != null) editorLineStatus.set(selectionStart, selectionEnd);
   }
 
   public boolean isSelectionActive() {