com.ebmwebsourcing.petals.common.internal.commands.RefreshCategoryHandler.java Source code

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Here is the source code for com.ebmwebsourcing.petals.common.internal.commands.RefreshCategoryHandler.java

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/******************************************************************************
 * Copyright (c) 2010-2013, Linagora
 *
 * 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:
 *       Linagora - initial API and implementation
 *******************************************************************************/

package com.ebmwebsourcing.petals.common.internal.commands;

import java.lang.reflect.InvocationTargetException;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.navigator.CommonNavigator;
import org.eclipse.ui.navigator.CommonViewer;
import org.eclipse.ui.progress.IProgressService;

import com.ebmwebsourcing.petals.common.internal.PetalsCommonPlugin;
import com.ebmwebsourcing.petals.common.internal.projectscnf.PetalsProjectManager;
import com.ebmwebsourcing.petals.common.internal.provisional.projectscnf.PetalsProjectCategory;

/**
 * Refreshes a Petals category.
 * @author Vincent Zurczak - EBM WebSourcing
 */
public class RefreshCategoryHandler extends AbstractHandler {

    /* (non-Javadoc)
     * @see org.eclipse.core.commands.IHandler
     * #execute(org.eclipse.core.commands.ExecutionEvent)
     */
    @Override
    public Object execute(ExecutionEvent event) throws ExecutionException {

        // Check the target view
        IWorkbenchPart part = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getActivePart();

        if (part instanceof CommonNavigator) {
            final CommonViewer viewer = ((CommonNavigator) part).getCommonViewer();

            // Check the selection
            ISelection s = null;
            try {
                s = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getSelection();
            } catch (Exception e1) {
                PetalsCommonPlugin.log(e1, IStatus.WARNING);
            }

            if (s != null && !s.isEmpty()) {
                final PetalsProjectCategory category = (PetalsProjectCategory) ((IStructuredSelection) s)
                        .getFirstElement();
                IRunnableWithProgress irwp = new IRunnableWithProgress() {
                    @Override
                    public void run(IProgressMonitor monitor)
                            throws InvocationTargetException, InterruptedException {

                        monitor.beginTask("Refresh in progress...", 2);

                        // Refresh the workspace
                        try {
                            ResourcesPlugin.getWorkspace().getRoot().refreshLocal(IResource.DEPTH_INFINITE,
                                    monitor);
                            PetalsProjectManager.INSTANCE.rebuildCategoryAssociations();

                        } catch (CoreException e1) {
                            PetalsCommonPlugin.log(e1, IStatus.WARNING);

                        } finally {
                            // Refresh the category contents
                            monitor.worked(1);
                            Display.getDefault().asyncExec(new Runnable() {
                                @Override
                                public void run() {
                                    viewer.refresh(category, true);
                                }
                            });
                            monitor.done();
                        }
                    }
                };

                // Run it
                try {
                    IProgressService ps = PlatformUI.getWorkbench().getProgressService();
                    ps.busyCursorWhile(irwp);

                } catch (InterruptedException e) {
                    // nothing

                } catch (InvocationTargetException e) {
                    PetalsCommonPlugin.log(e, IStatus.ERROR);
                }
            }
        }

        return null;
    }
}