bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/state/ExplorerStates.java

   1 package org.simantics.browsing.ui.common.state;
   2
   3 import java.io.File;
   4 import java.util.concurrent.CompletableFuture;
   5
   6 import org.eclipse.core.runtime.IProgressMonitor;
   7 import org.eclipse.core.runtime.IStatus;
   8 import org.eclipse.core.runtime.Platform;
   9 import org.eclipse.core.runtime.Status;
  10 import org.simantics.DatabaseJob;
  11 import org.simantics.browsing.ui.ExplorerState;
  12 import org.simantics.browsing.ui.NodeContext;
  13 import org.simantics.browsing.ui.StatePersistor;
  14 import org.simantics.browsing.ui.common.Activator;
  15
  16 /**
  17  * @author Tuukka Lehtonen
  18  * @since 1.36.0
  19  */
  20 public class ExplorerStates {
  21
  22     public static File explorerStateLocation() {
  23         return Platform.getStateLocation(Activator.getDefault().getBundle()).toFile();
  24     }
  25
  26     public static CompletableFuture<ExplorerState> scheduleRead(NodeContext root, StatePersistor persistor) {
  27         CompletableFuture<ExplorerState> result = new CompletableFuture<>();
  28         new ReaderJob(root, persistor, result).schedule();
  29         return result;
  30     }
  31
  32     private static class ReaderJob extends DatabaseJob {
  33
  34         private NodeContext root;
  35         private StatePersistor persistor;
  36         private CompletableFuture<ExplorerState> consumer;
  37
  38         public ReaderJob(NodeContext root, StatePersistor persistor, CompletableFuture<ExplorerState> consumer) {
  39             super("Reading previous graph explorer state");
  40             this.root = root;
  41             this.persistor = persistor;
  42             this.consumer = consumer;
  43         }
  44
  45         @Override
  46         protected IStatus run(IProgressMonitor monitor) {
  47             try {
  48                 monitor.beginTask("Loading persisted data", 1);
  49                 ExplorerState state = persistor.deserialize(explorerStateLocation(), root);
  50                 monitor.worked(1);
  51                 consumer.complete(state);
  52                 return Status.OK_STATUS;
  53             } finally {
  54                 monitor.done();
  55             }
  56         }
  57
  58     }
  59
  60 }