com.aptana.formatter.ui.util.StatusUtil.java Source code

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Here is the source code for com.aptana.formatter.ui.util.StatusUtil.java

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/*******************************************************************************
 * Copyright (c) 2005, 2007 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package com.aptana.formatter.ui.util;

import java.util.List;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.jface.dialogs.DialogPage;
import org.eclipse.jface.dialogs.IMessageProvider;

/**
 * A utility class to work with IStatus.
 */
public class StatusUtil {

    /**
     * Compares two instances of <code>IStatus</code>. The more severe is returned: An error is more severe than a
     * warning, and a warning is more severe than ok. If the two stati have the same severity, the second is returned.
     */
    public static IStatus getMoreSevere(IStatus s1, IStatus s2) {
        if (s1.getSeverity() > s2.getSeverity()) {
            return s1;
        } else {
            return s2;
        }
    }

    /**
     * Finds the most severe status from a array of stati. An error is more severe than a warning, and a warning is more
     * severe than ok.
     */
    public static IStatus getMostSevere(IStatus[] status) {
        IStatus max = null;
        for (int i = 0; i < status.length; i++) {
            IStatus curr = status[i];
            if (curr == null) {
                continue;
            }
            if (curr.matches(IStatus.ERROR)) {
                return curr;
            }
            if (max == null || curr.getSeverity() > max.getSeverity()) {
                max = curr;
            }
        }
        return max;
    }

    /**
     * Tests if the specified list contains errors
     */
    public static boolean isError(List<IStatus> statuses) {
        for (IStatus curr : statuses) {
            if (curr.matches(IStatus.ERROR)) {
                return true;
            }
        }
        return false;
    }

    /**
     * Applies the status to the status line of a dialog page.
     */
    public static void applyToStatusLine(DialogPage page, IStatus status) {
        String message = status.getMessage();
        switch (status.getSeverity()) {
        case IStatus.OK:
            page.setMessage(message, IMessageProvider.NONE);
            page.setErrorMessage(null);
            break;
        case IStatus.WARNING:
            page.setMessage(message, IMessageProvider.WARNING);
            page.setErrorMessage(null);
            break;
        case IStatus.INFO:
            page.setMessage(message, IMessageProvider.INFORMATION);
            page.setErrorMessage(null);
            break;
        default:
            if (message.length() == 0) {
                message = null;
            }
            page.setMessage(null);
            page.setErrorMessage(message);
            break;
        }
    }
}