/*******************************************************************************
 * Copyright (c) 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
 ******************************************************************************/

module org.eclipse.core.internal.databinding.BindingStatus;

import java.lang.all;

import java.util.Arrays;

import org.eclipse.core.databinding.util.Policy;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.MultiStatus;

/**
 * A <code>MultiStatus</code> implementation that copies that state of the
 * added status to this instance if it is >= the current severity.
 * 
 * @since 1.0
 */
public class BindingStatus : MultiStatus {
    /**
     * Constructs a new instance.
     * 
     * @param pluginId
     * @param code
     * @param message
     * @param exception
     */
    public this(String pluginId, int code, String message,
            Throwable exception) {
        super(pluginId, code, message, exception);
    }

    /**
     * Adds the status to the multi status. The details of the status will be
     * copied to the multi status if the severity is >= the current severity.
     * 
     * @see org.eclipse.core.runtime.MultiStatus#add(org.eclipse.core.runtime.IStatus)
     */
    public void add(IStatus status) {
        if (status.getSeverity() >= getSeverity()) {
            setMessage((status.getMessage() !is null) ? status.getMessage() : ""); //$NON-NLS-1$
            setException(status.getException());
            setPlugin(status.getPlugin());
            setCode(status.getCode());
        }

        super.add(status);
    }

    /**
     * Instance initialized with the following values:
     * <ul>
     * <li>plugin = Policy.JFACE_DATABINDING</li>
     * <li>severity = 0</li>
     * <li>code = 0</li>
     * <li>message = ""</li>
     * <li>exception = null</li>
     * </ul>
     * 
     * @return status
     */
    public static BindingStatus ok() {
        return new BindingStatus(Policy.JFACE_DATABINDING, 0, "", null); //$NON-NLS-1$
    }
    
    private static int hashCode(Object[] array) {
        final int prime = 31;
        if (array is null)
            return 0;
        int result = 1;
        for (int index = 0; index < array.length; index++) {
            result = prime * result
                    + (array[index] is null ? 0 : array[index].hashCode());
        }
        return result;
    }
    
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + BindingStatus.hashCode(getChildren());
        return result;
    }

    public override bool opEquals(Object obj) {
        if (this is obj)
            return true;
        if (obj is null)
            return false;
        if (getClass() !is obj.getClass())
            return false;
        final BindingStatus other = cast(BindingStatus) obj;
        if (!Arrays.equals(getChildren(), other.getChildren()))
            return false;
        return true;
    }
}