EditorConsole: Set up System.out/err redirection in setCurrentEditorC…

…onsole

Previously, the redirection would be triggered in the EditorConsole
constructor. However, this was problematic for unittests, which do not
need this redirection.

Since the redirection really is not useful intul there is a current
EditorConsole anyway, it can just be delayed a bit until
setCurrentEditorConsole is called.

app/src/processing/app/EditorConsole.java

@@ -38,19 +38,15 @@ public class EditorConsole extends JScrollPane {
   private static ConsoleOutputStream out;
   private static ConsoleOutputStream err;
 
-  private static synchronized void init(SimpleAttributeSet outStyle, PrintStream outStream, SimpleAttributeSet errStyle, PrintStream errStream) {
-    if (out != null) {
-      return;
-    }
-
-    out = new ConsoleOutputStream(outStyle, outStream);
-    System.setOut(new PrintStream(out, true));
+  public static synchronized void setCurrentEditorConsole(EditorConsole console) {
+    if (out == null) {
+      out = new ConsoleOutputStream(console.stdOutStyle, System.out);
+      System.setOut(new PrintStream(out, true));
 
-    err = new ConsoleOutputStream(errStyle, errStream);
-    System.setErr(new PrintStream(err, true));
-  }
+      err = new ConsoleOutputStream(console.stdErrStyle, System.err);
+      System.setErr(new PrintStream(err, true));
+    }
 
-  public static void setCurrentEditorConsole(EditorConsole console) {
     out.setCurrentEditorConsole(console);
     err.setCurrentEditorConsole(console);
   }
@@ -109,8 +105,6 @@ public EditorConsole(Base base) {
     setPreferredSize(new Dimension(100, (height * lines)));
     setMinimumSize(new Dimension(100, (height * lines)));
 
-    EditorConsole.init(stdOutStyle, System.out, stdErrStyle, System.err);
-
     // Add font size adjustment listeners.
     if (base != null)
       base.addEditorFontResizeListeners(consoleTextPane);
@@ -131,8 +125,10 @@ public void applyPreferences() {
     // Re-insert console text with the new preferences if there were changes.
     // This assumes that the document has single-child paragraphs (default).
     if (!stdOutStyle.isEqual(stdOutStyleOld) || !stdErrStyle.isEqual(stdOutStyleOld)) {
-      out.setAttibutes(stdOutStyle);
-      err.setAttibutes(stdErrStyle);
+      if (out != null)
+        out.setAttibutes(stdOutStyle);
+      if (err != null)
+        err.setAttibutes(stdErrStyle);
 
       int start;
       for (int end = document.getLength() - 1; end >= 0; end = start - 1) {