org.caleydo.core.internal.startup.StartupAddons.java Source code

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Here is the source code for org.caleydo.core.internal.startup.StartupAddons.java

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/*******************************************************************************
 * Caleydo - Visualization for Molecular Biology - http://caleydo.org
 * Copyright (c) The Caleydo Team. All rights reserved.
 * Licensed under the new BSD license, available at http://caleydo.org/license
 ******************************************************************************/
package org.caleydo.core.internal.startup;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;

import org.caleydo.core.startup.IStartupAddon;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.RegistryFactory;

import com.google.common.base.Strings;
import com.google.common.collect.Maps;

/**
 * @author Samuel Gratzl
 *
 */
public class StartupAddons {
    private static final String EXTENSION_POINT = "org.caleydo.core.StartupAddon";

    public static Map<String, IStartupAddon> findAll() {
        List<StartupAddonDesc> tmp = new ArrayList<>();
        try {
            for (IConfigurationElement elem : RegistryFactory.getRegistry()
                    .getConfigurationElementsFor(EXTENSION_POINT)) {
                final Object o = elem.createExecutableExtension("class");
                if (o instanceof IStartupAddon) {
                    String orderS = elem.getAttribute("order");
                    int order = Strings.isNullOrEmpty(orderS) ? 10 : Integer.parseInt(orderS);
                    tmp.add(new StartupAddonDesc(elem.getAttribute("name"), (IStartupAddon) o, order));
                }
            }
        } catch (CoreException e) {
            System.err.println("can't find implementations of " + EXTENSION_POINT + " : " + "name");
            e.printStackTrace();
        }

        // sort by order
        Collections.sort(tmp);
        Map<String, IStartupAddon> factories = Maps.newLinkedHashMap();
        for (StartupAddonDesc desc : tmp)
            factories.put(desc.label, desc.addon);
        return Collections.unmodifiableMap(factories);
    }

    private static class StartupAddonDesc implements Comparable<StartupAddonDesc> {
        private final String label;
        private final IStartupAddon addon;
        private final int order;

        public StartupAddonDesc(String label, IStartupAddon addon, int order) {
            this.label = label;
            this.addon = addon;
            this.order = order;
        }

        @Override
        public int compareTo(StartupAddonDesc o) {
            return order - o.order;
        }
    }
}