Package org.jnode.shell.syntax

Source Code of org.jnode.shell.syntax.KeyboardLayoutArgument

/*
* $Id$
*
* Copyright (C) 2003-2014 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.shell.syntax;

import javax.naming.NameNotFoundException;

import org.jnode.driver.console.CompletionInfo;
import org.jnode.driver.input.KeyboardLayoutManager;
import org.jnode.naming.InitialNaming;
import org.jnode.shell.CommandLine.Token;


/**
* This argument accepts any string as a potential keyboard layout id, and completes
* against the ids registered with the keyboard layout manager.
*
* @author crawley@jnode.org
*/
public class KeyboardLayoutArgument extends StringArgument {

    public KeyboardLayoutArgument(String label, int flags, String description) {
        super(label, flags, description);
    }

    @Override
    protected String argumentKind() {
        return "keyboard layout";
    }
   
    @Override
    protected String doAccept(Token token, int flags) throws CommandSyntaxException {
        return token.text;
    }

    @Override
    public void doComplete(CompletionInfo completions, String partial, int flags) {
        try {
            KeyboardLayoutManager mgr = InitialNaming.lookup(KeyboardLayoutManager.NAME);
            // collect matching devices
            for (String layout : mgr.layouts()) {
                if (layout.startsWith(partial)) {
                    completions.addCompletion(layout);
                }
            }
        } catch (NameNotFoundException ex) {
            throw new SyntaxFailureException("KeyboardLayoutManager not found. Check your system setup");
        }
    }
}
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