net.refractions.udig.ui.ErrorManager.java Source code

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Here is the source code for net.refractions.udig.ui.ErrorManager.java

Source

/* uDig - User Friendly Desktop Internet GIS client
 * http://udig.refractions.net
 * (C) 2004, Refractions Research Inc.
 *
 * 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;
 * version 2.1 of the License.
 *
 * 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 net.refractions.udig.ui;

import java.util.ArrayList;
import java.util.List;

import net.refractions.udig.ui.internal.Messages;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.MultiStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.ErrorDialog;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

/**
 * Provides a consistent way to handle error notifications.
 * 
 * @author chorner
 * @since 1.1.0
 */
public class ErrorManager {

    private ErrorManager() {
    }

    private static final ErrorManager instance = new ErrorManager();

    /**
     * Returns the singleton instance
     *
     * @return the singleton instance
     */
    public static ErrorManager get() {
        return instance;
    }

    public void displayError(final String title, final String message) {
        PlatformGIS.syncInDisplayThread(new Runnable() {
            public void run() {
                Shell shell = Display.getDefault().getActiveShell();
                MessageDialog.openError(shell, title, message);
            }
        });
    }

    public void displayException(final Throwable exception, final String message, final String pluginID) {
        List<Throwable> exceptions = new ArrayList<Throwable>();
        exceptions.add(exception);
        displayExceptions(exceptions, message, pluginID);
    }

    public void displayExceptions(final List<Throwable> exceptions, String message, final String pluginID) {
        final String m;
        if (message == null)
            m = ""; //$NON-NLS-1$
        else
            m = message;

        final MultiStatus multi = new MultiStatus(pluginID, IStatus.OK, message, null);
        for (Throwable exception : exceptions) {
            Status status = new Status(IStatus.ERROR, pluginID, IStatus.ERROR, exception.getLocalizedMessage(),
                    exception);
            multi.add(status);
        }

        PlatformGIS.syncInDisplayThread(new Runnable() {
            public void run() {
                Dialog dialog = new ErrorDialog(Display.getDefault().getActiveShell(),
                        Messages.ErrorManager_very_informative_error, m, multi, IStatus.ERROR);
                dialog.open();
            }
        });
    }

}