org.openscada.ca.ui.importer.wizard.DiffEntryLabelProvider.java Source code

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Here is the source code for org.openscada.ca.ui.importer.wizard.DiffEntryLabelProvider.java

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/*
 * This file is part of the OpenSCADA project
 * Copyright (C) 2006-2012 TH4 SYSTEMS GmbH (http://th4-systems.com)
 *
 * OpenSCADA is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenSCADA 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 version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenSCADA. If not, see
 * <http://opensource.org/licenses/lgpl-3.0.html> for a copy of the LGPLv3 License.
 */

package org.openscada.ca.ui.importer.wizard;

import java.util.Map;

import org.eclipse.jface.viewers.CellLabelProvider;
import org.eclipse.jface.viewers.ViewerCell;
import org.openscada.ca.data.DiffEntry;

public class DiffEntryLabelProvider extends CellLabelProvider {

    private static final int MAX_STR_LENGTH = 200;

    @Override
    public void update(final ViewerCell cell) {
        final Object ele = cell.getElement();

        if (ele instanceof DiffEntry) {
            final DiffEntry entry = (DiffEntry) ele;

            final int idx = cell.getColumnIndex();
            switch (idx) {
            case 0:
                cell.setText(entry.getFactoryId());
                break;

            case 1:
                cell.setText(entry.getConfigurationId());
                break;

            case 2:
                cell.setText(entry.getOperation().toString());
                break;

            case 3:
                cell.setText(formatData(entry.getAddedOrUpdatedData(), MAX_STR_LENGTH));
                break;

            case 4:
                cell.setText(formatData(entry.getOldData(), MAX_STR_LENGTH));
                break;
            }
        }

        else if (ele instanceof DiffSubEntry) {
            final DiffSubEntry entry = (DiffSubEntry) ele;

            final int idx = cell.getColumnIndex();
            switch (idx) {
            case 0:
                break;

            case 1:
                cell.setText(entry.getKey());
                break;

            case 2:
                break;

            case 3:
                cell.setText(entry.getNewValue());
                break;

            case 4:
                cell.setText(entry.getOldValue());
                break;
            }
        }
    }

    private String formatData(final Map<String, String> data, final int maxLen) {
        if (data == null) {
            return null;
        }

        final String str = data.toString();
        if (maxLen > 0 && str.length() > maxLen) {
            return str.substring(0, maxLen) + "";
        } else {
            return str;
        }
    }

}