1 files changed, 71 insertions, 0 deletions
diff --git a/target_explorer/plugins/org.eclipse.tm.te.runtime.stepper/src/org/eclipse/tm/te/runtime/stepper/extensions/AbstractContextStepGroup.java b/target_explorer/plugins/org.eclipse.tm.te.runtime.stepper/src/org/eclipse/tm/te/runtime/stepper/extensions/AbstractContextStepGroup.java
new file mode 100644
index 000000000..d8ab17b3a
--- /dev/null
+++ b/target_explorer/plugins/org.eclipse.tm.te.runtime.stepper/src/org/eclipse/tm/te/runtime/stepper/extensions/AbstractContextStepGroup.java
@@ -0,0 +1,71 @@
+/*******************************************************************************
+ * Copyright (c) 2011 Wind River Systems, Inc. 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.tm.te.runtime.stepper.extensions;
+
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IConfigurationElement;
+import org.eclipse.tm.te.runtime.extensions.ExecutableExtension;
+import org.eclipse.tm.te.runtime.extensions.ExecutableExtensionProxy;
+import org.eclipse.tm.te.runtime.stepper.interfaces.IContextStepGroup;
+import org.eclipse.tm.te.runtime.stepper.interfaces.IContextStepGroupIterator;
+import org.eclipse.tm.te.runtime.stepper.interfaces.IContextStepGroupable;
+
+/**
+ * Abstract context step group implementation.
+ */
+public abstract class AbstractContextStepGroup extends ExecutableExtension implements IContextStepGroup {
+
+	private ExecutableExtensionProxy<IContextStepGroupIterator> iteratorProxy = null;
+
+	/**
+	 * Constant to be returned in case the step group contains no steps.
+	 */
+	protected final static IContextStepGroupable[] NO_STEPS = new IContextStepGroupable[0];
+
+	/**
+	 * Constructor.
+	 */
+	public AbstractContextStepGroup() {
+		super();
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.tm.te.runtime.stepper.interfaces.IContextStepGroup#isLocked()
+	 */
+	@Override
+    public boolean isLocked() {
+		return false;
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.tm.te.runtime.extensions.ExecutableExtension#doSetInitializationData(org.eclipse.core.runtime.IConfigurationElement, java.lang.String, java.lang.Object)
+	 */
+	@Override
+	public void doSetInitializationData(IConfigurationElement config, String propertyName, Object data) throws CoreException {
+	    super.doSetInitializationData(config, propertyName, data);
+
+		if (iteratorProxy == null) {
+			iteratorProxy = new ExecutableExtensionProxy<IContextStepGroupIterator>(config) {
+				@Override
+				protected String getExecutableExtensionAttributeName() {
+					return "iterator"; //$NON-NLS-1$
+				}
+			};
+		}
+	}
+
+	/* (non-Javadoc)
+	 * @see org.eclipse.tm.te.runtime.stepper.interfaces.IContextStepGroup#getStepGroupIterator()
+	 */
+	@Override
+    public IContextStepGroupIterator getStepGroupIterator() {
+		return iteratorProxy != null ? iteratorProxy.newInstance() : null;
+	}
+}