X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.diagram%2Fsrc%2Forg%2Fsimantics%2Fdiagram%2Fflag%2FDiagramFlagPreferences.java;fp=bundles%2Forg.simantics.diagram%2Fsrc%2Forg%2Fsimantics%2Fdiagram%2Fflag%2FDiagramFlagPreferences.java;h=9756606221504173214c986a7c8e05ea4c8270b3;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.diagram/src/org/simantics/diagram/flag/DiagramFlagPreferences.java b/bundles/org.simantics.diagram/src/org/simantics/diagram/flag/DiagramFlagPreferences.java
new file mode 100644
index 000000000..975660622
--- /dev/null
+++ b/bundles/org.simantics.diagram/src/org/simantics/diagram/flag/DiagramFlagPreferences.java
@@ -0,0 +1,109 @@
+package org.simantics.diagram.flag;
+
+import org.simantics.Simantics;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.RequestProcessor;
+import org.simantics.db.Resource;
+import org.simantics.db.Session;
+import org.simantics.db.WriteGraph;
+import org.simantics.db.common.primitiverequest.PossibleObject;
+import org.simantics.db.common.request.ResourceRead;
+import org.simantics.db.common.request.WriteRequest;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.diagram.stubs.DiagramResource;
+import org.simantics.utils.datastructures.Callback;
+import org.simantics.utils.ui.ErrorLogger;
+
+/**
+ * @author Tuukka Lehtonen
+ */
+public class DiagramFlagPreferences {
+
+    /**
+     * Return the resource describing the currently active flag labeling scheme
+     * from the specified resource. The default intended resource for checking
+     * the scheme from is the active project.
+     */
+    public static class ReadFlagLabelingSchemeResource extends ResourceRead<Resource> {
+
+        public ReadFlagLabelingSchemeResource(Resource resource) {
+            super(resource);
+        }
+
+        @Override
+        public Resource perform(ReadGraph graph) throws DatabaseException {
+            DiagramResource DIA = DiagramResource.getInstance(graph);
+            Resource scheme = graph.syncRequest(new PossibleObject(resource,
+                    DIA.UsesLocalFlagLabelingScheme));
+            return scheme;
+        }
+
+    }
+
+    /**
+     * Adapt {@link FlagLabelingScheme} instance from the resource describing
+     * the currently active flag labeling scheme according to
+     * {@link ReadFlagLabelingSchemeResource}.
+     */
+    public static class ReadFlagLabelingScheme extends ResourceRead<FlagLabelingScheme> {
+
+        public ReadFlagLabelingScheme(Resource resource) {
+            super(resource);
+        }
+
+        @Override
+        public FlagLabelingScheme perform(ReadGraph graph) throws DatabaseException {
+            DiagramResource DIA = DiagramResource.getInstance(graph);
+            Resource scheme = graph.syncRequest(new ReadFlagLabelingSchemeResource(resource));
+            if (scheme == null)
+                return graph.adapt(DIA.FlagLabelingScheme_Alphabetical, FlagLabelingScheme.class);
+            return graph.adapt(scheme, FlagLabelingScheme.class);
+        }
+
+    }
+
+    public static Resource getActiveFlagLabelingSchemeResource(RequestProcessor processor) throws DatabaseException {
+        Resource project = Simantics.getProjectResource();
+        if (project == null)
+            throw new IllegalStateException("no project is active");
+
+        return processor.syncRequest(new ReadFlagLabelingSchemeResource(project));
+    }
+
+    public static FlagLabelingScheme getActiveFlagLabelingScheme(RequestProcessor processor) throws DatabaseException {
+        Resource project = Simantics.getProjectResource();
+        if (project == null)
+            throw new IllegalStateException("no project is active");
+
+        return processor.syncRequest(new ReadFlagLabelingScheme(project));
+    }
+
+    public static void setProjectFlagLabelingScheme(Resource scheme) {
+        Resource project = Simantics.getProjectResource();
+        if (project == null)
+            throw new IllegalStateException("no project is active");
+        setFlagLabelingScheme(Simantics.getSession(), project, scheme);
+    }
+
+    public static void setFlagLabelingScheme(Session session, final Resource forTarget, final Resource scheme) {
+        session.asyncRequest(new WriteRequest() {
+            @Override
+            public void perform(WriteGraph graph) throws DatabaseException {
+                setFlagLabelingScheme(graph, forTarget, scheme);
+            }
+        }, new Callback<DatabaseException>() {
+            @Override
+            public void run(DatabaseException parameter) {
+                if (parameter != null)
+                    ErrorLogger.defaultLogError(parameter);
+            }
+        });
+    }
+
+    public static void setFlagLabelingScheme(WriteGraph graph, Resource forTarget, Resource scheme) throws DatabaseException {
+        DiagramResource DIA = DiagramResource.getInstance(graph);
+        graph.deny(forTarget, DIA.UsesLocalFlagLabelingScheme);
+        graph.claim(forTarget, DIA.UsesLocalFlagLabelingScheme, scheme);
+    }
+
+}