net.roboconf.eclipse.modeler.RoboconfModelerPlugin.java Source code

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Here is the source code for net.roboconf.eclipse.modeler.RoboconfModelerPlugin.java

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/**
 * Copyright 2016-2017 Linagora, Universit Joseph Fourier, Floralis
 *
 * The present code is developed in the scope of the joint LINAGORA -
 * Universit Joseph Fourier - Floralis research program and is designated
 * as a "Result" pursuant to the terms and conditions of the LINAGORA
 * - Universit Joseph Fourier - Floralis research program. Each copyright
 * holder of Results enumerated here above fully & independently holds complete
 * ownership of the complete Intellectual Property rights applicable to the whole
 * of said Results, and may freely exploit it in any manner which does not infringe
 * the moral rights of the other copyright holders.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.roboconf.eclipse.modeler;

import java.util.HashSet;
import java.util.Set;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.sirius.business.api.componentization.ViewpointRegistry;
import org.eclipse.sirius.viewpoint.description.Viewpoint;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.osgi.framework.BundleContext;

/**
 * The activator class controls the plug-in life cycle.
 * @author Vincent Zurczak - Linagora
 */
public class RoboconfModelerPlugin extends AbstractUIPlugin {

    // The plug-in ID
    public static final String PLUGIN_ID = "net.roboconf.eclipse.modeler";

    // The shared instance
    private static RoboconfModelerPlugin plugin;
    private Set<Viewpoint> viewpoints;

    /**
     * Constructor.
     */
    public RoboconfModelerPlugin() {
        // nothing
    }

    @Override
    public void start(BundleContext context) throws Exception {
        super.start(context);
        plugin = this;

        this.viewpoints = new HashSet<>();
        this.viewpoints.addAll(
                ViewpointRegistry.getInstance().registerFromPlugin(PLUGIN_ID + "/description/graph.odesign"));
    }

    @Override
    public void stop(BundleContext context) throws Exception {

        plugin = null;
        if (this.viewpoints != null) {
            for (final Viewpoint viewpoint : this.viewpoints)
                ViewpointRegistry.getInstance().disposeFromPlugin(viewpoint);

            this.viewpoints.clear();
            this.viewpoints = null;
        }

        super.stop(context);
    }

    /**
     * @return the shared instance
     */
    public static RoboconfModelerPlugin getDefault() {
        return plugin;
    }

    /**
     * Logs an exception.
     * @param e the exception to log
     * @param severity the severity, given as one of the {@link IStatus} constants
     */
    public static void log(Exception e, int severity) {

        String msg = e.getMessage();
        if (msg == null || msg.trim().length() == 0)
            msg = "An error occurred.";

        IStatus status = new Status(severity, PLUGIN_ID, msg, e);
        getDefault().getLog().log(status);
    }

    /**
     * Logs a message.
     * @param message the message to log
     * @param severity the severity, given as one of the {@link IStatus} constants
     */
    public static void log(String message, int severity) {
        IStatus status = new Status(severity, PLUGIN_ID, message);
        getDefault().getLog().log(status);
    }

    /**
     * Finds an image from a relative path.
     * @param filePath the relative file path
     * @return an image, or null if none was found
     */
    public static Image findImage(String filePath) {

        ImageDescriptor desc = imageDescriptorFromPlugin(PLUGIN_ID, filePath);
        Image img = null;
        try {
            img = desc.createImage();

        } catch (Exception e) {
            log("Image " + filePath + " could not be found.", IStatus.ERROR);
        }

        return img;
    }
}