de.defmacro.dandelion.internal.preferences.LispEvalServerLabelProvider.java Source code

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Here is the source code for de.defmacro.dandelion.internal.preferences.LispEvalServerLabelProvider.java

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/*
 Dandelion, a Lisp plugin for Eclipse.
 Copyright (C) 2007 Michael Bohn
    
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.
    
 This program 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 General Public License for more details.
    
 You should have received a copy of the GNU General Public License along
 with this program; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

package de.defmacro.dandelion.internal.preferences;

import org.eclipse.jface.viewers.*;
import org.eclipse.swt.graphics.Image;

import de.defmacro.dandelion.internal.core.connection.*;

/**
 * Der {@link LabelProvider} fuer die Darstellung
 * der Eval-Server in der Preference-Liste.
 * @author Michael Bohn
 */
public class LispEvalServerLabelProvider extends LabelProvider implements ITableLabelProvider {
    private static final String DEFAULT = "(default)";

    private IEnvironment fDefaultServer;

    /**
     * Erstellt einen neuen LableProvider fuer die Eval-Server Liste.
     * @param defaultServer - Server der als Default angezeigt werden soll
     */
    public LispEvalServerLabelProvider(final IEnvironment defaultServer) {
        this.fDefaultServer = defaultServer;
    }

    /**
     * @see ITableLabelProvider#getColumnImage(Object, int)
     */
    public Image getColumnImage(final Object element, final int columnIndex) {
        return null;
    }

    /**
     * @see ITableLabelProvider#getColumnText(Object, int)
     */
    public String getColumnText(final Object element, final int index) {
        if (!(element instanceof IEnvironment)) {
            return null;
        }

        IEnvironment server = (IEnvironment) element;
        switch (index) {
        case 0:
            return serverName(server);
        case 1:
            return server.getHost();
        case 2:
            return Integer.toString(server.getPort());
        case 3:
            return server.getVersion();
        }
        return null;
    }

    private String serverName(final IEnvironment server) {
        //defaultServer kann null sein
        if (server.equals(fDefaultServer)) {
            return server.getName() + " " + DEFAULT;
        }
        return server.getName();
    }

    /**
     * Setzt einen neuen Server der als Default angezeigt wird.
     * Der Aufrufer ist fuer ein Refresh der Tabelle verantwortlich damit 
     * die Aenderung angezeigt wird.
     * @param newDefault
     */
    public void setNewDefault(final IEnvironment newDefault) {
        this.fDefaultServer = newDefault;
    }
}