1 files changed, 103 insertions, 0 deletions
diff --git a/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/variables/EditVariableLogicalStructureAction.java b/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/variables/EditVariableLogicalStructureAction.java
new file mode 100644
index 000000000..13fc017cd
--- /dev/null
+++ b/org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/views/variables/EditVariableLogicalStructureAction.java
@@ -0,0 +1,103 @@
+/*******************************************************************************
+ * Copyright (c) 2005, 2017 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 implementation
+ *******************************************************************************/
+package org.eclipse.debug.internal.ui.views.variables;
+
+import org.eclipse.debug.core.DebugException;
+import org.eclipse.debug.core.DebugPlugin;
+import org.eclipse.debug.core.ILogicalStructureType;
+import org.eclipse.debug.core.model.IValue;
+import org.eclipse.debug.core.model.IVariable;
+import org.eclipse.debug.internal.ui.DebugUIPlugin;
+import org.eclipse.jface.action.Action;
+import org.eclipse.jface.action.IAction;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.ui.IWorkbenchPart;
+import org.eclipse.ui.dialogs.PreferencesUtil;
+
+/**
+ * Action which prompts the user to edit the logical structure that
+ * is currently active on the given object.
+ */
+public class EditVariableLogicalStructureAction extends Action {
+
+    /**
+     * The editable structure for the currently selected variable or
+     * <code>null</code> if none.
+     */
+	private ILogicalStructureType fStructure = null;
+	private VariablesView fView = null;
+
+	public EditVariableLogicalStructureAction(VariablesView view) {
+		super();
+		fView = view;
+		ISelection selection = view.getViewer().getSelection();
+		if (selection != null) {
+			init(selection);
+		}
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see
+	 * org.eclipse.ui.IObjectActionDelegate#setActivePart(org.eclipse.jface.
+	 * action.IAction, org.eclipse.ui.IWorkbenchPart)
+	 */
+	public void setActivePart(IAction action, IWorkbenchPart targetPart) {
+    }
+
+    /**
+     * Prompt the user to edit the logical structure associated with the currently
+     * selected variable.
+     */
+	@Override
+	public void run() {
+		PreferencesUtil.createPreferenceDialogOn(DebugUIPlugin.getShell(), "org.eclipse.jdt.debug.ui.JavaLogicalStructuresPreferencePage", //$NON-NLS-1$
+				new String[] { "org.eclipse.jdt.debug.ui.JavaDetailFormattersPreferencePage", //$NON-NLS-1$
+						"org.eclipse.jdt.debug.ui.JavaLogicalStructuresPreferencePage", //$NON-NLS-1$
+						"org.eclipse.jdt.debug.ui.heapWalking", //$NON-NLS-1$
+						"org.eclipse.jdt.debug.ui.JavaPrimitivesPreferencePage" }, (fStructure != null) //$NON-NLS-1$
+								? fStructure.getId() + fStructure.getDescription() + fStructure.hashCode()
+								: null).open();
+    }
+
+	private void init(ISelection selection) {
+        fStructure= null;
+        Object element = ((IStructuredSelection) selection).getFirstElement();
+        if (element instanceof IVariable) {
+            try {
+                IValue value= ((IVariable) element).getValue();
+                ILogicalStructureType type= getLogicalStructure(value);
+				fStructure = type;
+            } catch (DebugException e) {
+				DebugUIPlugin.log(e.getStatus());
+            }
+        }
+		setEnabled(fView.isShowLogicalStructure());
+    }
+
+    /**
+     * Returns the logical structure currently associated with the given
+     * value or <code>null</code> if none.
+     * @param value the value
+     * @return the logical structure currently associated with the given
+     *  value or <code>null</code> if none.
+     */
+	private ILogicalStructureType getLogicalStructure(IValue value) {
+        // This code is based on VariablesViewContentProvider#getLogicalValue(IValue)
+        ILogicalStructureType type = null;
+        ILogicalStructureType[] types = DebugPlugin.getLogicalStructureTypes(value);
+        if (types.length > 0) {
+            type= DebugPlugin.getDefaultStructureType(types);
+        }
+        return type;
+    }
+}