--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cdt/cdt_6_0_x/org.eclipse.cdt.dsf.ui/src/org/eclipse/cdt/dsf/debug/ui/AbstractDsfDebugTextHover.java	Tue Nov 10 09:58:50 2009 -0600
@@ -0,0 +1,131 @@
+/**
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+*
+*/
+
+package org.eclipse.cdt.dsf.debug.ui;
+
+import org.eclipse.cdt.debug.ui.editors.AbstractDebugTextHover;
+import org.eclipse.cdt.dsf.concurrent.DataRequestMonitor;
+import org.eclipse.cdt.dsf.concurrent.Query;
+import org.eclipse.cdt.dsf.debug.service.IExpressions;
+import org.eclipse.cdt.dsf.debug.service.IFormattedValues;
+import org.eclipse.cdt.dsf.debug.service.IExpressions.IExpressionDMContext;
+import org.eclipse.cdt.dsf.debug.service.IFormattedValues.FormattedValueDMContext;
+import org.eclipse.cdt.dsf.debug.service.IFormattedValues.FormattedValueDMData;
+import org.eclipse.cdt.dsf.debug.service.IStack.IFrameDMContext;
+import org.eclipse.cdt.dsf.internal.ui.DsfUIPlugin;
+import org.eclipse.cdt.dsf.service.DsfServicesTracker;
+import org.eclipse.cdt.dsf.service.DsfSession;
+import org.eclipse.core.runtime.IAdaptable;
+import org.eclipse.debug.core.model.IDebugModelProvider;
+
+/**
+ * An implementation of AbstractDebugTextHover using DSF services.
+ * 
+ * @since 2.1
+ */
+abstract public class AbstractDsfDebugTextHover extends AbstractDebugTextHover {
+
+    /**
+     * Returns the debug model ID of that this debug text hover is to be used for.
+     */
+    abstract protected String getModelId();
+    
+	private static class GetExpressionValueQuery extends Query<FormattedValueDMData> {
+    	private final IFrameDMContext frame;
+    	private final String expression;
+		private DsfServicesTracker dsfServicesTracker;
+
+        public GetExpressionValueQuery(IFrameDMContext frame, String expression, DsfServicesTracker dsfServicesTracker) {
+            this.frame = frame;
+			this.expression = expression;
+			this.dsfServicesTracker = dsfServicesTracker;
+        }
+
+        @Override
+        protected void execute(final DataRequestMonitor<FormattedValueDMData> rm) {
+            DsfSession session = DsfSession.getSession(frame.getSessionId());
+			IExpressions expressions = dsfServicesTracker.getService(IExpressions.class);
+    		IExpressionDMContext expressionDMC = expressions.createExpression(frame, expression);
+    		FormattedValueDMContext formattedValueContext = expressions.getFormattedValueContext(expressionDMC, IFormattedValues.NATURAL_FORMAT);
+        	expressions.getFormattedExpressionValue(formattedValueContext,
+        			new DataRequestMonitor<FormattedValueDMData>(session.getExecutor(), rm) {
+                @Override
+                protected void handleSuccess() {
+                    rm.setData(getData());
+                    rm.done();
+                }
+                
+                @Override
+        		protected void handleFailure() {
+        			rm.done();
+        		}
+            });
+        }
+    }
+
+	protected IFrameDMContext getFrame() {
+	    IAdaptable adaptable = getSelectionAdaptable();
+	    if (adaptable != null) {
+	        return (IFrameDMContext) adaptable.getAdapter(IFrameDMContext.class);
+		}
+		return null;
+	}
+
+	@Override
+	protected boolean canEvaluate() {
+	    if (getFrame() == null) {
+	        return false;
+	    }
+	    
+		IAdaptable adaptable = getSelectionAdaptable();
+		if (adaptable != null) {
+		    IDebugModelProvider modelProvider = (IDebugModelProvider)adaptable.getAdapter(IDebugModelProvider.class);
+		    if (modelProvider != null) {
+		        String[] models = modelProvider.getModelIdentifiers();
+		        String myModel = getModelId();
+		        for (int i = 0; i < models.length; i++) {
+		            if (models[i].equals(myModel)) {
+		                return true;
+		            }
+		        }
+		    }
+		}
+		return false;
+	}
+
+	@Override
+	protected String evaluateExpression(String expression) {
+		IFrameDMContext frame = getFrame();
+		String sessionId = frame.getSessionId();
+		DsfServicesTracker dsfServicesTracker = new DsfServicesTracker(DsfUIPlugin.getBundleContext(), sessionId);
+		try {
+			GetExpressionValueQuery query = new GetExpressionValueQuery(frame, expression, dsfServicesTracker);
+			DsfSession session = DsfSession.getSession(sessionId);
+	        session.getExecutor().execute(query);
+	        try {
+	        	FormattedValueDMData data = query.get();
+	        	if (data != null)
+	        		return data.getFormattedValue();
+	        } catch (Exception e) {
+	        }
+		} finally {
+			dsfServicesTracker.dispose();
+		}
+        return null;
+	}
+
+}