X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.browsing.ui.graph.impl%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fgraph%2Fimpl%2Fcontribution%2FLabelerContributionImpl.java;fp=bundles%2Forg.simantics.browsing.ui.graph.impl%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fgraph%2Fimpl%2Fcontribution%2FLabelerContributionImpl.java;h=1ce487c076eb05f87c480a840f9357a40517b6da;hp=0000000000000000000000000000000000000000;hb=969bd23cab98a79ca9101af33334000879fb60c5;hpb=866dba5cd5a3929bbeae85991796acb212338a08

diff --git a/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/contribution/LabelerContributionImpl.java b/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/contribution/LabelerContributionImpl.java
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index 000000000..1ce487c07
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+++ b/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/contribution/LabelerContributionImpl.java
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+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.browsing.ui.graph.impl.contribution;
+
+import org.simantics.browsing.ui.NodeContext;
+import org.simantics.browsing.ui.PrimitiveQueryUpdater;
+import org.simantics.browsing.ui.BuiltinKeys.LabelerKey;
+import org.simantics.browsing.ui.common.labelers.LabelerContent;
+import org.simantics.db.AsyncReadGraph;
+import org.simantics.db.procedure.Listener;
+import org.simantics.db.procedure.Procedure;
+import org.simantics.utils.ui.ErrorLogger;
+
+/**
+ * Implement {@link #children(AsyncReadGraph)} and {@link #hasChildren(AsyncReadGraph)}.
+ * 
+ * @author Tuukka Lehtonen
+ */
+abstract public class LabelerContributionImpl extends FinalLabelerContributionImpl {
+
+	public LabelerContributionImpl(PrimitiveQueryUpdater updater,
+			NodeContext context, LabelerKey key) {
+		super(updater, context, key);
+	}
+
+	@Override
+	protected Procedure<LabelerContent> createProcedure() {
+		
+    	return new Listener<LabelerContent>() {
+    		
+    		boolean executed = false;
+    		boolean disposed = false;
+
+            @Override
+            public void execute(LabelerContent result) {
+                replaceResult(result);
+                executed = true;
+            }
+
+            @Override
+            public boolean isDisposed() {
+            	
+            	if(disposed) return true;
+            	
+            	if((updater.isDisposed() || !updater.isShown(context)) && executed) {
+            		setContent(LabelerContent.NO_CONTENT);
+            		disposed = true;
+            		return true;
+            	} else {
+            		return false;
+            	}
+            	
+            }
+
+            @Override
+            public void exception(Throwable t) {
+                ErrorLogger.defaultLogError("LazyContributionImpl.childQuery failed, see exception for details.", t);
+            }
+
+        };
+		
+	}
+
+}