gov.redhawk.ide.sdr.ui.internal.handlers.DeleteHandler.java Source code

Introduction

Here is the source code for gov.redhawk.ide.sdr.ui.internal.handlers.DeleteHandler.java

Source

/*******************************************************************************
 * This file is protected by Copyright. 
 * Please refer to the COPYRIGHT file distributed with this source distribution.
 *
 * This file is part of REDHAWK IDE.
 *
 * 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
 *******************************************************************************/
package gov.redhawk.ide.sdr.ui.internal.handlers;

import gov.redhawk.ide.sdr.ui.SdrUiPlugin;
import gov.redhawk.ide.sdr.ui.util.RefreshSdrJob;

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

import mil.jpeojtrs.sca.dcd.DeviceConfiguration;
import mil.jpeojtrs.sca.sad.SoftwareAssembly;
import mil.jpeojtrs.sca.spd.SoftPkg;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.filesystem.EFS;
import org.eclipse.core.filesystem.IFileStore;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.ISchedulingRule;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.core.runtime.jobs.MultiRule;
import org.eclipse.emf.common.util.URI;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.handlers.HandlerUtil;

/**
 * 
 */
public class DeleteHandler extends AbstractHandler {

    private static class WorkerSchedulingRule implements ISchedulingRule {

        @Override
        public boolean contains(final ISchedulingRule rule) {
            return rule == this;
        }

        @Override
        public boolean isConflicting(final ISchedulingRule rule) {
            return contains(rule);
        }

    }

    private static class LastSchedulingRule implements ISchedulingRule {

        @Override
        public boolean contains(final ISchedulingRule rule) {
            return rule == this;
        }

        @Override
        public boolean isConflicting(final ISchedulingRule rule) {
            return contains(rule) || rule instanceof WorkerSchedulingRule;
        }

    }

    /**
     * {@inheritDoc}
     */
    @Override
    public Object execute(final ExecutionEvent event) throws ExecutionException {
        final ISelection selection = HandlerUtil.getCurrentSelection(event);

        if (selection instanceof IStructuredSelection) {
            final IStructuredSelection structuredSelection = (IStructuredSelection) selection;
            final List<Job> jobs = new ArrayList<Job>();
            for (final Object obj : structuredSelection.toArray()) {
                Job job = null;
                if (obj instanceof SoftPkg) {
                    job = createDeleteSoftPkgJob((SoftPkg) obj, event);
                } else if (obj instanceof SoftwareAssembly) {
                    job = createDeleteSoftwareAssemblyJob((SoftwareAssembly) obj, event);
                } else if (obj instanceof DeviceConfiguration) {
                    job = createDeleteDeviceConfigurationJob((DeviceConfiguration) obj, event);
                }

                if (job != null) {
                    jobs.add(job);
                }
            }
            if (!jobs.isEmpty()) {
                final IProgressMonitor progressGroupMonitor = Job.getJobManager().createProgressGroup();
                progressGroupMonitor.beginTask("Deleting...", jobs.size() + 1);
                for (final Job j : jobs) {
                    j.setProgressGroup(progressGroupMonitor, 1);
                    j.schedule();
                }
                progressGroupMonitor.done();

                final RefreshSdrJob refreshJob = new RefreshSdrJob(SdrUiPlugin.getDefault().getTargetSdrRoot());
                final ISchedulingRule rule = MultiRule.combine(refreshJob.getRule(), new LastSchedulingRule());
                refreshJob.setRule(rule);
                refreshJob.setUser(false);
                refreshJob.setProgressGroup(progressGroupMonitor, 1);
                refreshJob.schedule();
            }
        }
        // TODO Auto-generated method stub
        return null;
    }

    private Job createDeleteDeviceConfigurationJob(final DeviceConfiguration obj, final ExecutionEvent event) {
        final URI uri = obj.eResource().getURI();
        return createDeleteParentDirJob(uri, obj.getName(), event);
    }

    private Job createDeleteSoftwareAssemblyJob(final SoftwareAssembly obj, final ExecutionEvent event) {
        final URI uri = obj.eResource().getURI();
        return createDeleteParentDirJob(uri, obj.getName(), event);
    }

    private Job createDeleteSoftPkgJob(final SoftPkg obj, final ExecutionEvent event) {
        final URI uri = obj.eResource().getURI();
        return createDeleteParentDirJob(uri, obj.getName(), event);
    }

    private Job createDeleteParentDirJob(final URI file, final String name, final ExecutionEvent event) {
        if (!MessageDialog.openQuestion(HandlerUtil.getActiveShell(event), "Delete",
                "Are you sure you want to delete '" + name + "'?")) {
            return null;
        }

        final Job job = new Job("Deleting " + name) {

            @Override
            protected IStatus run(final IProgressMonitor monitor) {
                try {
                    final IFileStore efsStore = EFS.getStore(java.net.URI.create(file.toString()));
                    final IFileStore parent = efsStore.getParent();
                    parent.delete(EFS.NONE, monitor);
                } catch (final CoreException e) {
                    return new Status(e.getStatus().getSeverity(), SdrUiPlugin.PLUGIN_ID,
                            "Failed to delete " + name, e);
                }
                return Status.OK_STATUS;
            }

        };
        job.setUser(false);
        job.setRule(new WorkerSchedulingRule());
        return job;
    }
}