Eclipse: Java Enum auto-completion of switch case

Question

Is there a CTRL+space -like way of "auto-constructing" a switch case around a given Java Enum in Eclipse? I'd like a stub with all Enum cases...

EDIT: Dupe of http://stackoverflow.com/questions/868261/is-there-a-template-or-something-for-generating-a-switch-statement-for-java-enum ? :-(

Answer 1

You can add your own code templates using: Windows->Preferences->Java->Editor->Templates.

Once you have added a code template, type enough characters of the template name to make it unique; type CTRL+Space; and your defined code will replace the template name characters.

The template for switch is predefined in Eclipse Galileo. sw+CTRL+Space should give you a switch statement. You might have to adapt an existing template to give you the switch-enum combination.

Answer 2

I don't know if it's possible to do this as a template, because the template would have to know which enum type you were using. But you could write a little script to print out the statement for you, and then just copy its output into your source file.

public class SwitchWriter {
  public static void printSwitchStatement(String varName, Class<?> E) {
    System.out.format("switch(%s) {\n", varName);
    for (Object o : E.getEnumConstants()) {
      System.out.format("case %s:\n  // TODO: Auto-generated switch statement stub\n  break;\n", o);
    }
    System.out.println("default:\n  // TODO: Auto-generated switch statement stub\n}");
  }
}

Output of SwitchWriter.printSwitchStatement("action", java.awt.Desktop.Action.class):

switch(action) {
case OPEN:
  // TODO: Auto-generated switch statement stub
  break;
case EDIT:
  // TODO: Auto-generated switch statement stub
  break;
case PRINT:
  // TODO: Auto-generated switch statement stub
  break;
case MAIL:
  // TODO: Auto-generated switch statement stub
  break;
case BROWSE:
  // TODO: Auto-generated switch statement stub
  break;
default:
  // TODO: Auto-generated switch statement stub
}

Answer 3

It has been in Eclipse for ages. It's admittedly only a bit hard to find. First start with

switch (myEnum) {

}

Then go with your cursor to the line with the switch keyword and press Ctrl+1 and choose Add missing case statements. This way it will insert any possible case. You'd expect this option to be available inside the statement blocks as well, but no.