org.simantics.district.network.ui/src/org/simantics/district/network/ui/internal/Activator.java

   1 package org.simantics.district.network.ui.internal;
   2
   3 import org.osgi.framework.BundleActivator;
   4 import org.osgi.framework.BundleContext;
   5 import org.osgi.util.tracker.ServiceTracker;
   6 import org.simantics.district.network.ui.breakdown.SubgraphProvider;
   7
   8 public class Activator implements BundleActivator {
   9
  10     public static final String PLUGIN_ID = "org.simantics.district.network.ui";
  11     private static Activator instance;
  12     private static BundleContext context;
  13     private ServiceTracker<SubgraphProvider, SubgraphProvider> subgraphProviderTracker;
  14
  15     @Override
  16     public void start(BundleContext context) throws Exception {
  17         Activator.instance = this;
  18         Activator.context = context;
  19
  20         subgraphProviderTracker = new ServiceTracker<>(context, SubgraphProvider.class.getName(), null);
  21         subgraphProviderTracker.open();
  22     }
  23
  24     @Override
  25     public void stop(BundleContext context) throws Exception {
  26         subgraphProviderTracker.close();
  27
  28         Activator.instance = null;
  29         Activator.context = null;
  30     }
  31
  32     public static Activator getInstance() {
  33         return instance;
  34     }
  35
  36     public static BundleContext getContext() {
  37         return context;
  38     }
  39
  40     public SubgraphProvider[] getSubgraphProviders() {
  41         return subgraphProviderTracker.getServices(new SubgraphProvider[0]);
  42     }
  43
  44 }