bundles/org.simantics.debug.browser/src/org/simantics/debug/browser/content/ResourceBrowserRewriterRepository.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2016 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     THTH ry - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.debug.browser.content;\r
  13 \r
  14 import java.util.Arrays;\r
  15 import java.util.Comparator;\r
  16 \r
  17 import org.osgi.framework.BundleContext;\r
  18 import org.osgi.util.tracker.ServiceTracker;\r
  19 import org.simantics.debug.browser.internal.Activator;\r
  20 \r
  21 public class ResourceBrowserRewriterRepository {\r
  22     private static ServiceTracker<ResourceBrowserRewriter, ResourceBrowserRewriter> TRACKER;\r
  23 \r
  24     private static final Comparator<ResourceBrowserRewriter> REWRITER_COMPARATOR =\r
  25             new Comparator<ResourceBrowserRewriter>() {\r
  26         @Override\r
  27         public int compare(ResourceBrowserRewriter o1,\r
  28                 ResourceBrowserRewriter o2) {\r
  29             return Double.compare(o1.getPriority(), o2.getPriority());\r
  30         }\r
  31     };\r
  32 \r
  33     public static ResourceBrowserRewriter[] getRewriters() {\r
  34         if(TRACKER == null) {\r
  35             BundleContext context = Activator.getContext();\r
  36             TRACKER = new ServiceTracker<ResourceBrowserRewriter, ResourceBrowserRewriter>(\r
  37                     context, ResourceBrowserRewriter.class, null);\r
  38             TRACKER.open();\r
  39         }\r
  40         ResourceBrowserRewriter[] rewriters =\r
  41                 TRACKER.getServices(new ResourceBrowserRewriter[TRACKER.getTrackingCount()]);\r
  42         Arrays.sort(rewriters, REWRITER_COMPARATOR);\r
  43         return rewriters;\r
  44     }\r
  45 }\r