#20#23 Update to GLSP 0.9.0 release version (#24)

ndoschek · web-flow · commit 0e5d08620b0d · 2022-01-10T13:24:21.000+01:00
* #20 Fix default getSourceUri in EMSModelSourceLoader - Fix getSourceUri to return complete sourceUri instead of workspace relative Uri by default Fixes #20 * #23 Update EMSBasicHandlers and update to GLSP 0.9.0. - Update dependency to GLSP 0.9.0 release version - Improve EMSBasic(Action|Operation)Handlers by injecting EMSModelState and reduce generic Types - Replace deprecated usage of BasicOperationHandler/BasicCreateOperationHandler with AbstractOperationHandler/AbstractCreateOperationHandler Fixes #23 * Address review comments - Reuse injected GModelState in Basic*Handlers - Provide getter method for EMSModelState in Basic*Handlers
diff --git a/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/EMSGLSPModule.java b/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/EMSGLSPModule.java
@@ -23,7 +23,6 @@
 import org.eclipse.glsp.server.di.MultiBinding;
 import org.eclipse.glsp.server.features.undoredo.UndoRedoActionHandler;
 import org.eclipse.glsp.server.layout.LayoutEngine;
-import org.eclipse.glsp.server.model.GModelState;
 import org.eclipse.glsp.server.operations.OperationActionHandler;
 
 public abstract class EMSGLSPModule extends GModelJsonDiagramModule {
@@ -50,7 +49,7 @@ protected Class<? extends LayoutEngine> bindLayoutEngine() {
    }
 
    @Override
-   protected Class<? extends GModelState> bindGModelState() {
+   protected Class<? extends EMSModelState> bindGModelState() {
       return EMSModelState.class;
    }
 
diff --git a/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/actions/handlers/EMSActionHandler.java b/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/actions/handlers/EMSActionHandler.java
@@ -13,13 +13,12 @@
 import java.util.List;
 
 import org.eclipse.emfcloud.modelserver.glsp.EMSModelServerAccess;
-import org.eclipse.emfcloud.modelserver.glsp.model.EMSModelState;
 import org.eclipse.glsp.server.actions.Action;
 import org.eclipse.glsp.server.actions.ActionHandler;
 
-public interface EMSActionHandler<T extends Action, U extends EMSModelState, V extends EMSModelServerAccess>
+public interface EMSActionHandler<T extends Action, U extends EMSModelServerAccess>
    extends ActionHandler {
 
-   List<Action> executeAction(T action, U modelState, V modelServerAccess);
+   List<Action> executeAction(T action, U modelServerAccess);
 
 }
diff --git a/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/actions/handlers/EMSBasicActionHandler.java b/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/actions/handlers/EMSBasicActionHandler.java
@@ -22,18 +22,16 @@
 import com.google.inject.Inject;
 
 @SuppressWarnings("restriction")
-public abstract class EMSBasicActionHandler<T extends Action, U extends EMSModelState, V extends EMSModelServerAccess>
-   extends AbstractActionHandler<T> implements EMSActionHandler<T, U, V> {
+public abstract class EMSBasicActionHandler<T extends Action, U extends EMSModelServerAccess>
+   extends AbstractActionHandler<T> implements EMSActionHandler<T, U> {
 
-   protected final Class<U> modelStateType;
-   protected final Class<V> modelServerAccessType;
+   protected final Class<U> modelServerAccessType;
 
    @Inject
    protected GModelState gModelState;
 
    public EMSBasicActionHandler() {
       super();
-      this.modelStateType = deriveModelStateType();
       this.modelServerAccessType = deriveModelServerAccessType();
    }
 
@@ -45,25 +43,20 @@ protected Class<T> deriveActionType() {
    }
 
    @SuppressWarnings("unchecked")
-   protected Class<U> deriveModelStateType() {
+   protected Class<U> deriveModelServerAccessType() {
       return (Class<U>) (GenericsUtil.getParametrizedType(getClass(), EMSBasicActionHandler.class))
          .getActualTypeArguments()[1];
    }
 
-   @SuppressWarnings("unchecked")
-   protected Class<V> deriveModelServerAccessType() {
-      return (Class<V>) (GenericsUtil.getParametrizedType(getClass(), EMSBasicActionHandler.class))
-         .getActualTypeArguments()[2];
-   }
-
    @Override
    public List<Action> executeAction(final T actualAction) {
       if (handles(actualAction)) {
          EMSModelServerAccess modelServerAccess = EMSModelState.getModelServerAccess(gModelState);
-         return executeAction(actionType.cast(actualAction), modelStateType.cast(gModelState),
-            modelServerAccessType.cast(modelServerAccess));
+         return executeAction(actionType.cast(actualAction), modelServerAccessType.cast(modelServerAccess));
       }
       return none();
    }
 
+   protected EMSModelState getEMSModelState() { return EMSModelState.getModelState(gModelState); }
+
 }
diff --git a/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/actions/handlers/EMSRedoActionHandler.java b/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/actions/handlers/EMSRedoActionHandler.java
@@ -18,16 +18,15 @@
 
 import org.apache.log4j.Logger;
 import org.eclipse.emfcloud.modelserver.glsp.EMSModelServerAccess;
-import org.eclipse.emfcloud.modelserver.glsp.model.EMSModelState;
 import org.eclipse.glsp.server.actions.Action;
 import org.eclipse.glsp.server.features.undoredo.RedoAction;
 
-public class EMSRedoActionHandler extends EMSBasicActionHandler<RedoAction, EMSModelState, EMSModelServerAccess> {
+public class EMSRedoActionHandler extends EMSBasicActionHandler<RedoAction, EMSModelServerAccess> {
 
    private static final Logger LOGGER = Logger.getLogger(EMSRedoActionHandler.class.getSimpleName());
 
    @Override
-   public List<Action> executeAction(final RedoAction action, final EMSModelState modelState,
+   public List<Action> executeAction(final RedoAction action,
       final EMSModelServerAccess modelServerAccess) {
 
       CompletableFuture<Void> result = modelServerAccess.redo().thenAccept(response -> {
diff --git a/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/actions/handlers/EMSRefreshModelActionHandler.java b/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/actions/handlers/EMSRefreshModelActionHandler.java
@@ -14,7 +14,6 @@
 
 import org.eclipse.emfcloud.modelserver.glsp.EMSModelServerAccess;
 import org.eclipse.emfcloud.modelserver.glsp.actions.EMSRefreshModelAction;
-import org.eclipse.emfcloud.modelserver.glsp.model.EMSModelState;
 import org.eclipse.glsp.server.actions.Action;
 import org.eclipse.glsp.server.features.core.model.ModelSubmissionHandler;
 
@@ -24,16 +23,16 @@
  * Handles model updates with an ActionHandler, to make sure we're in a thread-safe context.
  */
 public class EMSRefreshModelActionHandler
-   extends EMSBasicActionHandler<EMSRefreshModelAction, EMSModelState, EMSModelServerAccess> {
+   extends EMSBasicActionHandler<EMSRefreshModelAction, EMSModelServerAccess> {
 
    @Inject
    protected ModelSubmissionHandler submissionHandler;
 
    @Override
-   public List<Action> executeAction(final EMSRefreshModelAction action, final EMSModelState modelState,
+   public List<Action> executeAction(final EMSRefreshModelAction action,
       final EMSModelServerAccess modelServerAccess) {
       // reload models
-      modelState.loadSourceModels();
+      getEMSModelState().loadSourceModels();
       // refresh GModelRoot
       return submissionHandler.submitModel();
    }
diff --git a/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/actions/handlers/EMSSaveModelActionHandler.java b/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/actions/handlers/EMSSaveModelActionHandler.java
@@ -13,17 +13,15 @@
 import java.util.List;
 
 import org.eclipse.emfcloud.modelserver.glsp.EMSModelServerAccess;
-import org.eclipse.emfcloud.modelserver.glsp.model.EMSModelState;
 import org.eclipse.glsp.server.actions.Action;
 import org.eclipse.glsp.server.actions.SaveModelAction;
 import org.eclipse.glsp.server.types.GLSPServerException;
 
 public class EMSSaveModelActionHandler
-   extends EMSBasicActionHandler<SaveModelAction, EMSModelState, EMSModelServerAccess> {
+   extends EMSBasicActionHandler<SaveModelAction, EMSModelServerAccess> {
 
    @Override
-   public List<Action> executeAction(final SaveModelAction action, final EMSModelState modelState,
-      final EMSModelServerAccess modelServerAccess) {
+   public List<Action> executeAction(final SaveModelAction action, final EMSModelServerAccess modelServerAccess) {
 
       modelServerAccess.save().thenAccept(response -> {
          if (!response.body()) {
diff --git a/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/actions/handlers/EMSUndoActionHandler.java b/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/actions/handlers/EMSUndoActionHandler.java
@@ -18,18 +18,16 @@
 
 import org.apache.log4j.Logger;
 import org.eclipse.emfcloud.modelserver.glsp.EMSModelServerAccess;
-import org.eclipse.emfcloud.modelserver.glsp.model.EMSModelState;
 import org.eclipse.glsp.server.actions.Action;
 import org.eclipse.glsp.server.features.undoredo.UndoAction;
 
 public class EMSUndoActionHandler
-   extends EMSBasicActionHandler<UndoAction, EMSModelState, EMSModelServerAccess> {
+   extends EMSBasicActionHandler<UndoAction, EMSModelServerAccess> {
 
    private static final Logger LOGGER = Logger.getLogger(EMSUndoActionHandler.class.getSimpleName());
 
    @Override
-   public List<Action> executeAction(final UndoAction action, final EMSModelState modelState,
-      final EMSModelServerAccess modelServerAccess) {
+   public List<Action> executeAction(final UndoAction action, final EMSModelServerAccess modelServerAccess) {
 
       CompletableFuture<Void> result = modelServerAccess.undo().thenAccept(response -> {
          int status = response.getStatusCode();
diff --git a/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/model/EMSModelSourceLoader.java b/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/model/EMSModelSourceLoader.java
@@ -24,16 +24,13 @@
 import org.eclipse.glsp.server.model.GModelState;
 import org.eclipse.glsp.server.types.GLSPServerException;
 import org.eclipse.glsp.server.utils.ClientOptionsUtil;
-import org.eclipse.glsp.server.utils.MapUtil;
 
 import com.google.inject.Inject;
 
 public abstract class EMSModelSourceLoader implements ModelSourceLoader {
 
    private static Logger LOGGER = Logger.getLogger(EMSModelSourceLoader.class.getSimpleName());
 
-   public static final String WORKSPACE_ROOT_OPTION = "workspaceRoot";
-
    @Inject
    protected ModelServerClientProvider modelServerClientProvider;
 
@@ -88,10 +85,7 @@ public EMSSubscriptionListener createSubscriptionListener(final EMSModelState mo
    protected String getSourceURI(final Map<String, String> clientOptions) {
       String sourceURI = ClientOptionsUtil.getSourceUri(clientOptions)
          .orElseThrow(() -> new GLSPServerException("No source URI given to load model!"));
-      String workspaceRoot = MapUtil.getValue(clientOptions, WORKSPACE_ROOT_OPTION)
-         .orElseThrow(() -> new GLSPServerException("No workspace URI given to load model!"));
-
-      return sourceURI.replace(ClientOptionsUtil.adaptUri(workspaceRoot), "").replaceFirst("/", "");
+      return sourceURI;
    }
 
 }
diff --git a/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/notation/integration/EMSNotationGLSPModule.java b/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/notation/integration/EMSNotationGLSPModule.java
@@ -11,10 +11,10 @@
 package org.eclipse.emfcloud.modelserver.glsp.notation.integration;
 
 import org.eclipse.emfcloud.modelserver.glsp.EMSGLSPModule;
+import org.eclipse.emfcloud.modelserver.glsp.model.EMSModelState;
 import org.eclipse.emfcloud.modelserver.glsp.operations.handlers.EMSChangeBoundsOperationHandler;
 import org.eclipse.emfcloud.modelserver.glsp.operations.handlers.EMSLayoutOperationHandler;
 import org.eclipse.glsp.server.di.MultiBinding;
-import org.eclipse.glsp.server.model.GModelState;
 import org.eclipse.glsp.server.operations.OperationHandler;
 import org.eclipse.glsp.server.operations.gmodel.ChangeBoundsOperationHandler;
 import org.eclipse.glsp.server.operations.gmodel.LayoutOperationHandler;
@@ -29,7 +29,7 @@ protected void configureOperationHandlers(final MultiBinding<OperationHandler> b
    }
 
    @Override
-   protected Class<? extends GModelState> bindGModelState() {
+   protected Class<? extends EMSModelState> bindGModelState() {
       return EMSNotationModelState.class;
    }
 
diff --git a/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/notation/integration/EMSNotationModelState.java b/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/notation/integration/EMSNotationModelState.java
@@ -11,10 +11,18 @@
 package org.eclipse.emfcloud.modelserver.glsp.notation.integration;
 
 import org.eclipse.emfcloud.modelserver.glsp.model.EMSModelState;
+import org.eclipse.glsp.server.model.GModelState;
 
 public abstract class EMSNotationModelState extends EMSModelState {
 
    @Override
    public abstract EMSNotationModelIndex getIndex();
 
+   public static EMSNotationModelState getModelState(final GModelState state) {
+      if (!(state instanceof EMSNotationModelState)) {
+         throw new IllegalArgumentException("Argument must be a EMSNotationModelState");
+      }
+      return ((EMSNotationModelState) state);
+   }
+
 }
diff --git a/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/operations/handlers/EMSBasicCreateOperationHandler.java b/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/operations/handlers/EMSBasicCreateOperationHandler.java
@@ -16,27 +16,28 @@
 import org.eclipse.emfcloud.modelserver.glsp.model.EMSModelState;
 import org.eclipse.glsp.server.internal.util.GenericsUtil;
 import org.eclipse.glsp.server.model.GModelState;
-import org.eclipse.glsp.server.operations.BasicCreateOperationHandler;
+import org.eclipse.glsp.server.operations.AbstractCreateOperationHandler;
 import org.eclipse.glsp.server.operations.CreateOperation;
 
 import com.google.common.collect.Lists;
+import com.google.inject.Inject;
 
 @SuppressWarnings("restriction")
-public abstract class EMSBasicCreateOperationHandler<T extends CreateOperation, U extends EMSModelState, V extends EMSModelServerAccess>
-   extends BasicCreateOperationHandler<T> implements EMSOperationHandler<T, U, V> {
+public abstract class EMSBasicCreateOperationHandler<T extends CreateOperation, U extends EMSModelServerAccess>
+   extends AbstractCreateOperationHandler<T> implements EMSOperationHandler<T, U> {
 
-   protected final Class<U> modelStateType;
-   protected final Class<V> modelServerAccessType;
+   @Inject
+   protected GModelState gModelState;
+
+   protected final Class<U> modelServerAccessType;
 
    public EMSBasicCreateOperationHandler(final String... elementTypeIds) {
       super(Lists.newArrayList(elementTypeIds));
-      this.modelStateType = deriveModelStateType();
       this.modelServerAccessType = deriveModelServerAccessType();
    }
 
    public EMSBasicCreateOperationHandler(final List<String> handledElementTypeIds) {
       super(handledElementTypeIds);
-      this.modelStateType = deriveModelStateType();
       this.modelServerAccessType = deriveModelServerAccessType();
    }
 
@@ -48,33 +49,19 @@ protected Class<T> deriveOperationType() {
    }
 
    @SuppressWarnings("unchecked")
-   protected Class<U> deriveModelStateType() {
+   protected Class<U> deriveModelServerAccessType() {
       return (Class<U>) (GenericsUtil.getParametrizedType(getClass(), EMSBasicCreateOperationHandler.class))
          .getActualTypeArguments()[1];
    }
 
-   @SuppressWarnings("unchecked")
-   protected Class<V> deriveModelServerAccessType() {
-      return (Class<V>) (GenericsUtil.getParametrizedType(getClass(), EMSBasicCreateOperationHandler.class))
-         .getActualTypeArguments()[2];
-   }
-
    @Override
-   public void executeOperation(final T operation, final GModelState gModelState) {
+   public void executeOperation(final T operation) {
       if (handles(operation)) {
-         EMSModelState modelState = getModelState(gModelState);
-         EMSModelServerAccess modelServerAccess = getModelServerAccess(gModelState);
-         executeOperation(operationType.cast(operation), modelStateType.cast(modelState),
-            modelServerAccessType.cast(modelServerAccess));
+         EMSModelServerAccess modelServerAccess = EMSModelState.getModelServerAccess(gModelState);
+         executeOperation(operationType.cast(operation), modelServerAccessType.cast(modelServerAccess));
       }
    }
 
-   protected EMSModelState getModelState(final GModelState gModelState) {
-      return EMSModelState.getModelState(gModelState);
-   }
-
-   protected EMSModelServerAccess getModelServerAccess(final GModelState gModelState) {
-      return EMSModelState.getModelServerAccess(gModelState);
-   }
+   protected EMSModelState getEMSModelState() { return EMSModelState.getModelState(gModelState); }
 
 }
diff --git a/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/operations/handlers/EMSBasicOperationHandler.java b/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/operations/handlers/EMSBasicOperationHandler.java
@@ -14,19 +14,22 @@
 import org.eclipse.emfcloud.modelserver.glsp.model.EMSModelState;
 import org.eclipse.glsp.server.internal.util.GenericsUtil;
 import org.eclipse.glsp.server.model.GModelState;
-import org.eclipse.glsp.server.operations.BasicOperationHandler;
+import org.eclipse.glsp.server.operations.AbstractOperationHandler;
 import org.eclipse.glsp.server.operations.Operation;
 
+import com.google.inject.Inject;
+
 @SuppressWarnings("restriction")
-public abstract class EMSBasicOperationHandler<T extends Operation, U extends EMSModelState, V extends EMSModelServerAccess>
-   extends BasicOperationHandler<T> implements EMSOperationHandler<T, U, V> {
+public abstract class EMSBasicOperationHandler<T extends Operation, U extends EMSModelServerAccess>
+   extends AbstractOperationHandler<T> implements EMSOperationHandler<T, U> {
+
+   @Inject
+   protected GModelState gModelState;
 
-   protected final Class<U> modelStateType;
-   protected final Class<V> modelServerAccessType;
+   protected final Class<U> modelServerAccessType;
 
    public EMSBasicOperationHandler() {
       super();
-      this.modelStateType = deriveModelStateType();
       this.modelServerAccessType = deriveModelServerAccessType();
    }
 
@@ -38,32 +41,18 @@ protected Class<T> deriveOperationType() {
    }
 
    @SuppressWarnings("unchecked")
-   protected Class<U> deriveModelStateType() {
+   protected Class<U> deriveModelServerAccessType() {
       return (Class<U>) (GenericsUtil.getParametrizedType(getClass(), EMSBasicOperationHandler.class))
          .getActualTypeArguments()[1];
    }
 
-   @SuppressWarnings("unchecked")
-   protected Class<V> deriveModelServerAccessType() {
-      return (Class<V>) (GenericsUtil.getParametrizedType(getClass(), EMSBasicOperationHandler.class))
-         .getActualTypeArguments()[2];
-   }
-
    @Override
-   public void executeOperation(final T operation, final GModelState gModelState) {
+   public void executeOperation(final T operation) {
       if (handles(operation)) {
-         EMSModelState modelState = getModelState(gModelState);
-         EMSModelServerAccess modelServerAccess = getModelServerAccess(gModelState);
-         executeOperation(operationType.cast(operation), modelStateType.cast(modelState),
-            modelServerAccessType.cast(modelServerAccess));
+         EMSModelServerAccess modelServerAccess = EMSModelState.getModelServerAccess(gModelState);
+         executeOperation(operationType.cast(operation), modelServerAccessType.cast(modelServerAccess));
       }
    }
 
-   protected EMSModelState getModelState(final GModelState gModelState) {
-      return EMSModelState.getModelState(gModelState);
-   }
-
-   protected EMSModelServerAccess getModelServerAccess(final GModelState gModelState) {
-      return EMSModelState.getModelServerAccess(gModelState);
-   }
+   protected EMSModelState getEMSModelState() { return EMSModelState.getModelState(gModelState); }
 }
diff --git a/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/operations/handlers/EMSChangeBoundsOperationHandler.java b/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/operations/handlers/EMSChangeBoundsOperationHandler.java
diff --git a/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/operations/handlers/EMSLayoutOperationHandler.java b/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/operations/handlers/EMSLayoutOperationHandler.java
diff --git a/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/operations/handlers/EMSOperationHandler.java b/plugins/org.eclipse.emfcloud.modelserver.glsp.integration/src/org/eclipse/emfcloud/modelserver/glsp/operations/handlers/EMSOperationHandler.java
diff --git a/pom.xml b/pom.xml
diff --git a/releng/org.eclipse.emfcloud.modelserver.glsp.releng.target/targetdefinition.target b/releng/org.eclipse.emfcloud.modelserver.glsp.releng.target/targetdefinition.target
diff --git a/releng/org.eclipse.emfcloud.modelserver.glsp.releng.target/targetdefinition.tpd b/releng/org.eclipse.emfcloud.modelserver.glsp.releng.target/targetdefinition.tpd

Original file line number	Diff line number	Diff line change
`@@ -23,7 +23,6 @@`
`23`	`23`	`import org.eclipse.glsp.server.di.MultiBinding;`
`24`	`24`	`import org.eclipse.glsp.server.features.undoredo.UndoRedoActionHandler;`
`25`	`25`	`import org.eclipse.glsp.server.layout.LayoutEngine;`
`26`		`-import org.eclipse.glsp.server.model.GModelState;`
`27`	`26`	`import org.eclipse.glsp.server.operations.OperationActionHandler;`
`28`	`27`
`29`	`28`	`public abstract class EMSGLSPModule extends GModelJsonDiagramModule {`
`@@ -50,7 +49,7 @@ protected Class<? extends LayoutEngine> bindLayoutEngine() {`
`50`	`49`	`}`
`51`	`50`
`52`	`51`	`@Override`
`53`		`- protected Class<? extends GModelState> bindGModelState() {`
	`52`	`+ protected Class<? extends EMSModelState> bindGModelState() {`
`54`	`53`	`return EMSModelState.class;`
`55`	`54`	`}`
`56`	`55`