com.liferay.ide.project.ui.migration.MigratorComparator.java Source code

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Here is the source code for com.liferay.ide.project.ui.migration.MigratorComparator.java

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/*******************************************************************************
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * 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.
 *
 *******************************************************************************/

package com.liferay.ide.project.ui.migration;

import com.liferay.blade.api.Problem;

import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerComparator;
import org.eclipse.swt.SWT;

/**
 * @author Lovett li
 */
public class MigratorComparator extends ViewerComparator {

    private int columnIndex;
    private static final int DESCENDING = 1;
    private int direction = DESCENDING;

    public MigratorComparator() {
        this.columnIndex = 1;
        direction = DESCENDING;
    }

    public int getDirection() {
        return direction == 1 ? SWT.DOWN : SWT.UP;
    }

    public void setColumn(int column) {
        if (column == this.columnIndex) {
            direction = 1 - direction;
        } else {
            this.columnIndex = column;
            direction = DESCENDING;
        }
    }

    @Override
    public int compare(Viewer viewer, Object e1, Object e2) {
        final Problem t1 = (Problem) e1;
        final Problem t2 = (Problem) e2;
        int flag = 0;

        switch (columnIndex) {
        case 0:
            flag = (t1.getStatus() == Problem.STATUS_RESOLVED) ? 1 : -1;
            break;

        case 1:
            flag = t1.getLineNumber() >= t2.getLineNumber() ? 1 : -1;
            break;

        case 2:
            if (t1.getTitle().compareTo(t2.getTitle()) != 0) {
                flag = t1.getTitle().compareTo(t2.getTitle()) > 0 ? 1 : -1;
            }
            break;

        default:
            flag = 0;
        }

        if (direction != DESCENDING) {
            flag = -flag;
        }

        return flag;
    }
}