changeset 1797:e8627495578f

8166183: jshell tool: on return from Ctrl-Z, garbage on screen, dies with Ctrl-C Summary: Reset the console when the process is suspended and resumed. Reviewed-by: sundar
author jlahoda
date Wed, 19 Oct 2016 12:42:41 +0200
parents 0d5081c856bc
children ca08ca9bef23
files src/jdk.scripting.nashorn.shell/share/classes/jdk/nashorn/tools/jjs/Console.java
diffstat 1 files changed, 17 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/src/jdk.scripting.nashorn.shell/share/classes/jdk/nashorn/tools/jjs/Console.java	Wed Oct 19 13:27:20 2016 +0530
+++ b/src/jdk.scripting.nashorn.shell/share/classes/jdk/nashorn/tools/jjs/Console.java	Wed Oct 19 12:42:41 2016 +0200
@@ -42,6 +42,8 @@
 import jdk.internal.jline.console.ConsoleReader;
 import jdk.internal.jline.console.KeyMap;
 import jdk.internal.jline.extra.EditingHistory;
+import jdk.internal.misc.Signal;
+import jdk.internal.misc.Signal.Handler;
 
 class Console implements AutoCloseable {
     private static final String DOCUMENTATION_SHORTCUT = "\033\133\132"; //Shift-TAB
@@ -68,6 +70,21 @@
         in.addCompleter(completer);
         Runtime.getRuntime().addShutdownHook(new Thread((Runnable)this::saveHistory));
         bind(DOCUMENTATION_SHORTCUT, (ActionListener)evt -> showDocumentation(docHelper));
+        try {
+            Signal.handle(new Signal("CONT"), new Handler() {
+                @Override public void handle(Signal sig) {
+                    try {
+                        in.getTerminal().reset();
+                        in.redrawLine();
+                        in.flush();
+                    } catch (Exception ex) {
+                        ex.printStackTrace();
+                    }
+                }
+            });
+        } catch (IllegalArgumentException ignored) {
+            //the CONT signal does not exist on this platform
+        }
     }
 
     String readLine(final String prompt) throws IOException {