1 files changed, 44 insertions, 0 deletions
diff --git a/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/actions/IWatchExpressionFactoryAdapterExtension.java b/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/actions/IWatchExpressionFactoryAdapterExtension.java
new file mode 100644
index 000000000..fd277f1aa
--- /dev/null
+++ b/org.eclipse.debug.ui/ui/org/eclipse/debug/ui/actions/IWatchExpressionFactoryAdapterExtension.java
@@ -0,0 +1,44 @@
+/*******************************************************************************
+ * Copyright (c) 2006 IBM Corporation 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:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.debug.ui.actions;
+
+import org.eclipse.debug.core.model.IVariable;
+
+/**
+ * Optional extension to the watch expression factory adapter to dynamically enable the
+ * 'Create Watch Expression' action, based on the selected variable.
+ * <p>
+ * By default, the 'Create Watch Expression' action is enabled for instances of
+ * {@link org.eclipse.debug.core.model.IVariable} that have an associated
+ * {@link org.eclipse.debug.core.model.IWatchExpressionDelegate} registered
+ * for that debug model. 
+ * When a watch expression factory adapter is available for a variable that implements
+ * this interface, the factory is consulted to enable the action.
+ * </p>
+ * <p>
+ * Clients may implementing {@link IWatchExpressionFactoryAdapter} may also implement
+ * this interface.
+ * </p>
+ * @since 3.3
+ */
+public interface IWatchExpressionFactoryAdapterExtension extends IWatchExpressionFactoryAdapter {
+	
+	/**
+	 * Returns whether a watch expression can be created for the specified variable.
+	 * 
+	 * @param variable variable a watch expression is required for
+	 * @return whether an expression can be created
+	 * @exception org.eclipse.core.runtime.CoreException if unable to create a watch
+	 *  expression
+	 */
+	public boolean canCreateWatchExpression(IVariable variable);
+
+}