eu.esdihumboldt.hale.ui.templates.handler.OpenWebTemplate.java Source code

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Here is the source code for eu.esdihumboldt.hale.ui.templates.handler.OpenWebTemplate.java

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/*
 * Copyright (c) 2013 Data Harmonisation Panel
 * 
 * All rights reserved. This program and the accompanying materials are made
 * available under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the License,
 * or (at your option) any later version.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution. If not, see <http://www.gnu.org/licenses/>.
 * 
 * Contributors:
 *     Data Harmonisation Panel <http://www.dhpanel.eu>
 */

package eu.esdihumboldt.hale.ui.templates.handler;

import java.lang.reflect.InvocationTargetException;
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.runtime.IProgressMonitor;
import org.eclipse.jface.dialogs.ProgressMonitorDialog;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.handlers.HandlerUtil;

import de.fhg.igd.slf4jplus.ALogger;
import de.fhg.igd.slf4jplus.ALoggerFactory;
import eu.esdihumboldt.hale.ui.service.project.ProjectService;
import eu.esdihumboldt.hale.ui.templates.webtemplates.WebTemplate;
import eu.esdihumboldt.hale.ui.templates.webtemplates.WebTemplateLoader;
import eu.esdihumboldt.hale.ui.templates.webtemplates.WebTemplatesDialog;

/**
 * Opens a dialog for selecting and opening a web template.
 * 
 * @author Simon Templer
 */
public class OpenWebTemplate extends AbstractHandler {

    private static final ALogger log = ALoggerFactory.getLogger(OpenWebTemplate.class);

    @Override
    public Object execute(ExecutionEvent event) throws ExecutionException {
        final Display display = HandlerUtil.getActiveShell(event).getDisplay();

        ProgressMonitorDialog taskDlg = new ProgressMonitorDialog(HandlerUtil.getActiveShell(event));
        try {
            taskDlg.run(true, false, new IRunnableWithProgress() {

                @Override
                public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
                    monitor.beginTask("Downloading template list", IProgressMonitor.UNKNOWN);

                    // load templates
                    final List<WebTemplate> templates;
                    try {
                        templates = WebTemplateLoader.load();
                    } catch (Exception e) {
                        log.userError("Failed to download template list", e);
                        return;
                    } finally {
                        monitor.done();
                    }

                    if (templates != null) {
                        // launch dialog asynchronously in display thread
                        display.asyncExec(new Runnable() {

                            @Override
                            public void run() {
                                WebTemplatesDialog dlg = new WebTemplatesDialog(display.getActiveShell(),
                                        templates);
                                if (dlg.open() == WebTemplatesDialog.OK) {
                                    WebTemplate template = dlg.getObject();
                                    if (template != null) {
                                        ProjectService ps = (ProjectService) PlatformUI.getWorkbench()
                                                .getService(ProjectService.class);
                                        ps.load(template.getProject());
                                    }
                                }
                            }
                        });
                    }
                }
            });
        } catch (InvocationTargetException | InterruptedException e) {
            log.userError("Failed to download template list", e);
        }

        return null;
    }
}