LocalServiceProvider.java

package org.lodder.subtools.multisubdownloader.serviceproviders;

import org.lodder.subtools.multisubdownloader.framework.Container;
import org.lodder.subtools.multisubdownloader.framework.event.Emitter;
import org.lodder.subtools.multisubdownloader.framework.event.Event;
import org.lodder.subtools.multisubdownloader.framework.event.Handler;
import org.lodder.subtools.multisubdownloader.framework.service.providers.ServiceProvider;
import org.lodder.subtools.multisubdownloader.settings.model.Settings;
import org.lodder.subtools.multisubdownloader.subtitleproviders.Local;
import org.lodder.subtools.multisubdownloader.subtitleproviders.SubtitleProvider;
import org.lodder.subtools.multisubdownloader.subtitleproviders.SubtitleProviderStore;
import org.lodder.subtools.sublibrary.Manager;

public class LocalServiceProvider implements ServiceProvider {

  protected Container app;
  protected SubtitleProvider subtitleProvider;

  @Override
  public int getPriority() {
    /* We define a priority lower than SubtitleServiceProvider */
    return 1;
  }

  @Override
  public void register(Container app) {

    this.app = app;

    /* Resolve the SubtitleProviderStore from the IoC Container */
    final SubtitleProviderStore subtitleProviderStore = (SubtitleProviderStore) app.make("SubtitleProviderStore");

    /* Create the SubtitleProvider */
    subtitleProvider = createProvider();

    /* Add the SubtitleProvider to the store */
    subtitleProviderStore.addProvider(subtitleProvider);

    /* Listen for settings-change event */
    this.registerListener(subtitleProviderStore);
  }

  private SubtitleProvider createProvider() {
    Settings settings = (Settings) this.app.make("Settings");
    Manager manager = (Manager) app.make("Manager");
    return new Local(settings, manager);
  }

  private void registerListener(final SubtitleProviderStore subtitleProviderStore) {
    /* Resolve the EventEmitter from the IoC Container */
    Emitter emitter = (Emitter) app.make("EventEmitter");

    /* Listen for settings-change */
    emitter.listen("providers.settings.change", new Handler() {
      @Override
      public void handle(Event event) {
        /* Change occured, delete outdated provider from store */
        subtitleProviderStore.deleteProvider(subtitleProvider);

        /* Re-create subtitleprovider */
        subtitleProvider = createProvider();

        /* Re-add provider to store */
        subtitleProviderStore.addProvider(subtitleProvider);
      }
    });
  }
}