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8166183: jshell tool: on return from Ctrl-Z, garbage on screen, dies with Ctrl-C

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Reset the console when the process is suspended and resumed.

Reviewed-by: sundar
This commit is contained in:
Jan Lahoda 2016-10-19 12:42:41 +02:00
parent 093753dee1
commit 3334929d21
1 changed files with 17 additions and 0 deletions
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17
nashorn/src/jdk.scripting.nashorn.shell/share/classes/jdk/nashorn/tools/jjs/Console.java
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@ -42,6 +42,8 @@ import jdk.internal.jline.WindowsTerminal;
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 @@ class Console implements AutoCloseable {
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 {