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%2FFinalLabelerContributionImpl.java;fp=bundles%2Forg.simantics.browsing.ui.graph.impl%2Fsrc%2Forg%2Fsimantics%2Fbrowsing%2Fui%2Fgraph%2Fimpl%2Fcontribution%2FFinalLabelerContributionImpl.java;h=83bdbe264afeae90aaff43d579b9daa985b84e69;hp=0000000000000000000000000000000000000000;hb=969bd23cab98a79ca9101af33334000879fb60c5;hpb=866dba5cd5a3929bbeae85991796acb212338a08

diff --git a/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/contribution/FinalLabelerContributionImpl.java b/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/contribution/FinalLabelerContributionImpl.java
new file mode 100644
index 000000000..83bdbe264
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+++ b/bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/contribution/FinalLabelerContributionImpl.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 java.util.Collections;
+import java.util.Map;
+
+import org.simantics.Simantics;
+import org.simantics.browsing.ui.BuiltinKeys;
+import org.simantics.browsing.ui.BuiltinKeys.LabelerKey;
+import org.simantics.browsing.ui.DataSource;
+import org.simantics.browsing.ui.GraphExplorer.ModificationContext;
+import org.simantics.browsing.ui.NodeContext;
+import org.simantics.browsing.ui.PrimitiveQueryUpdater;
+import org.simantics.browsing.ui.common.labelers.LabelerContent;
+import org.simantics.browsing.ui.common.labelers.LabelerStub;
+import org.simantics.browsing.ui.common.node.IModifiableNode;
+import org.simantics.browsing.ui.graph.impl.request.ResourceQuery;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.UndoContext;
+import org.simantics.db.common.utils.Logger;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.layer0.exception.InvalidVariableException;
+import org.simantics.db.layer0.exception.PendingVariableException;
+import org.simantics.db.procedure.Listener;
+import org.simantics.db.procedure.Procedure;
+import org.simantics.db.request.Read;
+import org.simantics.utils.ui.ErrorLogger;
+
+public abstract class FinalLabelerContributionImpl extends LabelerStub {
+
+    protected final PrimitiveQueryUpdater       updater;
+    private final ResourceQuery<LabelerContent> labelQuery;
+
+    final protected NodeContext                context;
+    final private BuiltinKeys.LabelerKey    key;
+
+    public Object getIdentity(LabelerKey key) {
+        return key;
+    }
+
+    public FinalLabelerContributionImpl(final PrimitiveQueryUpdater updater, final NodeContext context, final LabelerKey key) {
+
+        this.updater = updater;
+        this.context = context;
+        this.key = key;
+
+        labelQuery = new ResourceQuery<LabelerContent>(getIdentity(key), context) {
+
+            @Override
+            public LabelerContent perform(ReadGraph graph) throws DatabaseException {
+                try {
+                    int cat = category(graph, context);
+                    Map<String, String> lbls = labels(graph, context);
+                    // Make sure that null is not returned.
+                    if (lbls == null)
+                        throw new NullPointerException("FinalLabelerContributionImpl.labels is not allowed to return null, but " + FinalLabelerContributionImpl.this.getClass() + " just did it");
+                    return new LabelerContent(cat, lbls);
+                } catch (PendingVariableException e) {
+                    return LabelerContent.NO_CONTENT;
+                } catch (InvalidVariableException e) {
+                    //ErrorLogger.defaultLogError("FinalLabelerContributionImpl.labelQuery failed due to invalid variable.", e);
+                    return LabelerContent.NO_CONTENT;
+                } catch (DatabaseException e) {
+                    throw e;
+                } catch (Throwable t) {
+                    ErrorLogger.defaultLogError("FinalLabelerContributionImpl.labelQuery produced unexpected exception.", t);
+                    return LabelerContent.NO_CONTENT;
+                }
+            }
+
+            @Override
+            public String toString() {
+                return FinalLabelerContributionImpl.this + " with context " + context;
+            }
+
+        };
+
+    }
+
+    protected Procedure<LabelerContent> createProcedure() {
+
+        return new Procedure<LabelerContent>() {
+
+            @Override
+            public void execute(LabelerContent result) {
+                replaceResult(result);
+            }
+
+            @Override
+            public void exception(Throwable t) {
+                ErrorLogger.defaultLogError("FinalLabelerContributionImpl.labelQuery failed, see exception for details.", t);
+            }
+
+        };
+
+    }
+
+    protected void replaceResult(LabelerContent result) {
+        setContent(result);
+        updater.scheduleReplace(context, key, this);
+    }
+
+    @Override
+    public Map<String, String> getLabels() {
+
+        if (content == LabelerContent.NO_CONTENT) {
+
+            final DataSource<ReadGraph> source = updater.getDataSource(ReadGraph.class);
+            assert(source != null);
+
+            final Procedure<LabelerContent> procedure = createProcedure();
+            
+            source.schedule(graph -> {
+                if(procedure instanceof Listener<?>)
+                    graph.asyncRequest(labelQuery, (Listener<LabelerContent>)procedure);
+                else
+                    graph.asyncRequest(labelQuery, procedure);
+            });
+
+        }
+
+        if(content == null) return Collections.emptyMap();
+
+        return content.labels;
+
+    }
+
+    @Override
+    public Modifier getModifier(final ModificationContext modificationContext, final String columnKey) {
+    	
+        Object obj = context.getConstant(BuiltinKeys.INPUT);
+        if (obj instanceof IModifiableNode) {
+            return ((IModifiableNode) obj).getModifier(columnKey);
+        }
+        try {
+			return Simantics.getSession().syncRequest(new Read<Modifier>() {
+
+				@Override
+				public Modifier perform(ReadGraph graph) throws DatabaseException {
+				    UndoContext undoContext = null == modificationContext ? null :
+				        (UndoContext)modificationContext.getAdapter(UndoContext.class);
+					return FinalLabelerContributionImpl.this.getModifier(graph, undoContext, context, columnKey);
+				}
+				
+			});
+		} catch (DatabaseException e) {
+			Logger.defaultLogError(e);
+			return null;
+		}
+        
+    }
+
+    // OVERRIDE
+
+    public Modifier getModifier(ReadGraph graph, UndoContext undoContext, NodeContext context, String columnKey) throws DatabaseException {
+    	return null;
+    }
+
+    public abstract Map<String, String> labels(ReadGraph graph, NodeContext context) throws DatabaseException;
+
+    public abstract int category(ReadGraph graph, NodeContext context) throws DatabaseException;
+
+}