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

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

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/*
 * This file is part of the OpenSCADA project
 * 
 * Copyright (C) 2006-2012 TH4 SYSTEMS GmbH (http://th4-systems.com)
 * Copyright (C) 2013 Jens Reimann (ctron@dentrassi.de)
 *
 * 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.lang.reflect.InvocationTargetException;
import java.util.Collection;
import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.ExecutionException;

import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.SubMonitor;
import org.eclipse.jface.dialogs.IDialogSettings;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.wizard.Wizard;
import org.eclipse.ui.IImportWizard;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.statushandlers.StatusManager;
import org.openscada.ca.connection.provider.ConnectionService;
import org.openscada.ca.data.DiffEntry;
import org.openscada.ca.ui.importer.Activator;
import org.openscada.ca.ui.importer.preferences.PreferenceConstants;
import org.openscada.ca.ui.util.DiffController;
import org.openscada.sec.ui.DisplayCallbackHandler;
import org.openscada.ui.databinding.AdapterHelper;
import org.openscada.utils.concurrent.NotifyFuture;

import com.google.common.collect.Iterables;

public class ImportWizard extends Wizard implements IImportWizard {

    private ConnectionService connection;

    private final DiffController mergeController;

    public ImportWizard() {
        setNeedsProgressMonitor(true);
        setWindowTitle(Messages.ImportWizard_Title);

        IDialogSettings settings = Activator.getDefault().getDialogSettings().getSection("importWizard"); //$NON-NLS-1$
        if (settings == null) {
            settings = Activator.getDefault().getDialogSettings().addNewSection("importWizard"); //$NON-NLS-1$
        }

        setDialogSettings(Activator.getDefault().getDialogSettings().getSection("importWizard")); //$NON-NLS-1$

        this.mergeController = new DiffController();
    }

    @Override
    public boolean performFinish() {
        try {
            getContainer().run(true, false, new IRunnableWithProgress() {

                @Override
                public void run(final IProgressMonitor monitor)
                        throws InvocationTargetException, InterruptedException {
                    try {
                        applyDiff(monitor);
                    } catch (final ExecutionException e) {
                        throw new InvocationTargetException(e);
                    }
                }
            });

            return true;
        } catch (final Exception e) {
            final Status status = new Status(IStatus.ERROR, Activator.PLUGIN_ID,
                    Messages.ImportWizard_StatusErrorFailedToApply, e);
            StatusManager.getManager().handle(status, StatusManager.BLOCK);
            return false;
        }
    }

    protected void applyDiff(final IProgressMonitor parentMonitor) throws InterruptedException, ExecutionException {
        final SubMonitor monitor = SubMonitor.convert(parentMonitor, 100);
        monitor.setTaskName(Messages.ImportWizard_TaskName);

        final Collection<DiffEntry> result = this.mergeController.merge(monitor.newChild(10));
        if (result.isEmpty()) {
            monitor.done();
            return;
        }

        final Iterable<List<DiffEntry>> splitted = Iterables.partition(result,
                Activator.getDefault().getPreferenceStore().getInt(PreferenceConstants.P_DEFAULT_CHUNK_SIZE));

        final SubMonitor sub = monitor.newChild(90);

        try {
            final int size = Iterables.size(splitted);
            sub.beginTask(Messages.ImportWizard_TaskName, size);

            int pos = 0;
            for (final Iterable<DiffEntry> i : splitted) {
                sub.subTask(String.format(Messages.ImportWizard_SubTaskName, pos, size));
                final List<DiffEntry> entries = new LinkedList<DiffEntry>();
                Iterables.addAll(entries, i);
                final NotifyFuture<Void> future = this.connection.getConnection().applyDiff(entries, null,
                        new DisplayCallbackHandler(getShell(), "Apply diff",
                                "Confirmation for applying diff is required"));
                future.get();

                pos++;
                sub.worked(1);
            }
        } finally {
            sub.done();
        }

    }

    @Override
    public void addPages() {
        addPage(new LocalDataPage(this.connection, this.mergeController));
        addPage(new RemoteDataPage(this.connection, this.mergeController));
        addPage(new IgnorePage(this.mergeController));
        addPage(new PreviewPage(this.mergeController));
    }

    @Override
    public void init(final IWorkbench workbench, final IStructuredSelection selection) {
        this.connection = getConnection(selection);
    }

    private ConnectionService getConnection(final IStructuredSelection selection) {
        if (selection == null) {
            return null;
        }

        final Object o = AdapterHelper.adapt(selection.getFirstElement(),
                org.openscada.core.connection.provider.ConnectionService.class);
        if (o instanceof ConnectionService) {
            return (ConnectionService) o;
        } else {
            return null;
        }
    }

}