de.walware.docmlet.tex.internal.ui.ConvertToTexProjectHandler.java Source code

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Here is the source code for de.walware.docmlet.tex.internal.ui.ConvertToTexProjectHandler.java

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/*=============================================================================#
 # Copyright (c) 2014-2015 Stephan Wahlbrink (WalWare.de) 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:
 #     Stephan Wahlbrink - initial API and implementation
 #=============================================================================*/

package de.walware.docmlet.tex.internal.ui;

import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
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.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.actions.WorkspaceModifyOperation;
import org.eclipse.ui.statushandlers.StatusManager;

import de.walware.ecommons.ui.util.UIAccess;
import de.walware.ecommons.workbench.ui.WorkbenchUIUtil;

import de.walware.docmlet.tex.core.TexProjects;

public class ConvertToTexProjectHandler extends AbstractHandler {

    public ConvertToTexProjectHandler() {
    }

    @Override
    public Object execute(final ExecutionEvent event) throws ExecutionException {
        final ISelection selection = WorkbenchUIUtil.getCurrentSelection(event.getApplicationContext());
        final List<IProject> projects;
        if (selection instanceof IStructuredSelection) {
            final IStructuredSelection structuredSelection = (IStructuredSelection) selection;
            projects = new ArrayList<>(structuredSelection.size());
            for (final Iterator<?> iter = structuredSelection.iterator(); iter.hasNext();) {
                final Object obj = iter.next();
                if (obj instanceof IAdaptable) {
                    final IProject project = (IProject) ((IAdaptable) obj).getAdapter(IProject.class);
                    if (project != null) {
                        projects.add(project);
                    }
                }
            }
        } else {
            return null;
        }

        final WorkspaceModifyOperation op = new WorkspaceModifyOperation() {

            @Override
            protected void execute(final IProgressMonitor monitor)
                    throws CoreException, InvocationTargetException, InterruptedException {
                final SubMonitor progress = SubMonitor.convert(monitor, TexUIMessages.TexProject_ConvertTask_label,
                        100);
                try {
                    final SubMonitor loop = progress.newChild(100).setWorkRemaining(projects.size());
                    for (final IProject project : projects) {
                        if (progress.isCanceled()) {
                            throw new InterruptedException();
                        }
                        TexProjects.setupTexProject(project, loop.newChild(1));
                    }
                } finally {
                    progress.done();
                }
            }

        };
        try {
            UIAccess.getActiveWorkbenchWindow(true).run(true, true, op);
        } catch (final InvocationTargetException e) {
            StatusManager.getManager().handle(new Status(IStatus.ERROR, TexUIPlugin.PLUGIN_ID,
                    TexUIMessages.TexProject_ConvertTask_error_message, e.getTargetException()));
        } catch (final InterruptedException e) {
            // cancelled
        }

        return null;
    }

}