1 files changed, 78 insertions, 0 deletions
diff --git a/dsf/org.eclipse.cdt.dsf.ui/src/org/eclipse/cdt/dsf/debug/internal/ui/viewmodel/actions/UpdateScopesPropertyTester.java b/dsf/org.eclipse.cdt.dsf.ui/src/org/eclipse/cdt/dsf/debug/internal/ui/viewmodel/actions/UpdateScopesPropertyTester.java
new file mode 100644
index 00000000000..752c71ce86d
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+++ b/dsf/org.eclipse.cdt.dsf.ui/src/org/eclipse/cdt/dsf/debug/internal/ui/viewmodel/actions/UpdateScopesPropertyTester.java
@@ -0,0 +1,78 @@
+/*******************************************************************************
+ * Copyright (c) 2008 Wind River Systems and others.
+ * 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:
+ *     Wind River Systems - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.cdt.dsf.debug.internal.ui.viewmodel.actions;
+
+import org.eclipse.cdt.dsf.debug.ui.viewmodel.actions.VMHandlerUtils;
+import org.eclipse.cdt.dsf.ui.viewmodel.IVMContext;
+import org.eclipse.cdt.dsf.ui.viewmodel.IVMProvider;
+import org.eclipse.cdt.dsf.ui.viewmodel.update.ICachingVMProviderExtension;
+import org.eclipse.cdt.dsf.ui.viewmodel.update.IVMUpdateScope;
+import org.eclipse.core.expressions.PropertyTester;
+import org.eclipse.debug.ui.IDebugView;
+import org.eclipse.ui.IWorkbenchPart;
+
+/**
+ * Property tester for update scope information available through the given 
+ * object.  The object being tested should be either an {@link IVMContext}, 
+ * through which an instance of {@link ICachingVMProviderExtension} could be obtained.
+ * Or it could be an {@link IWorkbenchPart}, which is tested to see if it
+ * is a debug view through which a caching VM provider can be obtained.  
+ * The Caching View Model provider is used to test the given property.
+ * <p>
+ * Three properties are supported:
+ * <ul>
+ * <li> "areUpdateScopesSupported" - Checks whether update scopes are 
+ * available at all given the receiver.</li>
+ * <li> "isUpdateScopeAvailable" - Checks whether the update scope in the 
+ * expected value is available for the given receiver.</li>
+ * <li> "isUpdateScopeActive" - Checks whether the scope given in the expected 
+ * value is the currently active scope for the given receiver.</li>
+ * </ul>
+ * </p>
+ */
+public class UpdateScopesPropertyTester extends PropertyTester {
+
+    private static final String SUPPORTED = "areUpdateScopesSupported"; //$NON-NLS-1$
+    private static final String AVAILABLE = "isUpdateScopeAvailable"; //$NON-NLS-1$
+    private static final String ACTIVE = "isUpdateScopeActive"; //$NON-NLS-1$
+
+    public boolean test(Object receiver, String property, Object[] args, Object expectedValue) {
+        if (receiver instanceof IVMContext) {
+            IVMProvider provider = ((IVMContext)receiver).getVMNode().getVMProvider();
+            if (provider instanceof ICachingVMProviderExtension) {
+                return testProvider((ICachingVMProviderExtension)provider, property, expectedValue);
+            }
+        } else if (receiver instanceof IDebugView) {
+            IVMProvider provider = VMHandlerUtils.getVMProviderForPart((IDebugView)receiver);
+            if (provider instanceof ICachingVMProviderExtension) {
+                return testProvider((ICachingVMProviderExtension)provider, property, expectedValue);                    
+            }
+        }
+        return false;
+    }
+
+    private boolean testProvider(ICachingVMProviderExtension provider, String property, Object expectedValue) {
+        if (SUPPORTED.equals(property)) {
+            return true;
+        } else if (AVAILABLE.equals(property)) {
+            for (IVMUpdateScope scope : provider.getAvailableUpdateScopes()) {
+                if (scope.getID().equals(expectedValue)) {
+                    return true;
+                }
+                return false;
+            }
+        } else if (ACTIVE.equals(property)) {
+            return expectedValue != null && expectedValue.equals(provider.getActiveUpdateScope().getID());
+        } 
+        return false;
+    }
+    
+}