null, all available properties should be set.
+ */
+ public String[] getProperties();
+
+ /**
+ * Sets the given property to update.
+ * @param property Property ID.
+ * @param value Property value.
+ */
+ public void setProperty(String property, Object value);
+}
diff --git a/plugins/org.eclipse.dd.dsf.ui/src/org/eclipse/dd/dsf/ui/viewmodel/properties/LabelAttribute.java b/plugins/org.eclipse.dd.dsf.ui/src/org/eclipse/dd/dsf/ui/viewmodel/properties/LabelAttribute.java
new file mode 100644
index 00000000000..e615c0ce5f4
--- /dev/null
+++ b/plugins/org.eclipse.dd.dsf.ui/src/org/eclipse/dd/dsf/ui/viewmodel/properties/LabelAttribute.java
@@ -0,0 +1,109 @@
+/*******************************************************************************
+ * Copyright (c) 2007 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.dd.dsf.ui.viewmodel.properties;
+
+import java.util.Map;
+
+import org.eclipse.core.runtime.ListenerList;
+import org.eclipse.debug.internal.ui.viewers.model.provisional.ILabelUpdate;
+
+/**
+ * This is a base class for a label attribute used in generating label
+ * information based on properties of an element. There are currently
+ * four types of attributes: text, image, font, and color, and a given
+ * attribute can be either enabled or disabled based on the element
+ * properties.
+ *
+ * Clients are intended to override this class and its extensions to
+ * implement the {@link LabelAttribute#isEnabled(Map)} and
+ * {@link LabelAttribute#getPropertyNames()} methods as needed. Clients can
+ * also override how the attribute settings are stored, for example in
+ * order to use a preference.
+ *
+ * @see PropertyBasedLabelProvider
+ * @see LabelColumnInfo
+ */
+@SuppressWarnings("restriction")
+abstract public class LabelAttribute {
+ public static final String[] EMPTY_PROPERTY_NAMES_ARRAY = new String[0];
+
+ /**
+ * Listeners for when this attribute is modified.
+ */
+ private ListenerList fListeners = new ListenerList();
+
+ public LabelAttribute() {
+ }
+
+ /**
+ * Disposes this attribute.
+ */
+ public void dispose() {
+ }
+
+ /**
+ * Registers the given listener for changes in this attribute. A change in
+ * the attributes of a label should cause a view to repaint.
+ * @param listener Listener to register.
+ */
+ public void addChangedListener(ILabelAttributeChangedListener listener) {
+ fListeners.add(listener);
+ }
+
+ /**
+ * Unregisters the given listener.
+ * @param listener Listener to unregister.
+ */
+ public void removeChangedListener(ILabelAttributeChangedListener listener) {
+ fListeners.remove(listener);
+ }
+
+ /**
+ * Calls the listeners to notify them that this attribute has changed.
+ */
+ protected void fireAttributeChanged() {
+ Object[] listeners = fListeners.getListeners();
+ for (Object listener : listeners) {
+ ((ILabelAttributeChangedListener)listener).attributesChanged();
+ }
+ }
+
+ /**
+ * Returns the propertis that are needed by this attribute in order to
+ * determine whether this attribute is enabled and/or for the actual
+ * attribute itself.
+ * @return Array of names of properties for the element properties provider.
+ */
+ public String[] getPropertyNames() {
+ return EMPTY_PROPERTY_NAMES_ARRAY;
+ }
+
+ /**
+ * Returns whether this attribute is enabled for an element which has
+ * the given properties.
+ * @param properties Map or element properties. The client should ensure
+ * that all properties specified by {@link #getPropertyNames()} are
+ * supplied in this map.
+ * @return true if this attribute is enabled.
+ */
+ public boolean isEnabled(Map
+ * When this provider is registered for an element it calculates the properties
+ * that need to be retrieved based on view's active columns, and then it calls the
+ * element's property provider to retrieve those properties. After the property
+ * values are retrieved, they are processed in order to produce correct label text,
+ * images, fonts, and colors, for the given element.
+ */
+@SuppressWarnings("restriction")
+@ThreadSafe
+public class PropertyBasedLabelProvider
+ implements IElementLabelProvider, ILabelAttributeChangedListener
+{
+ private static final String[] EMPTY_PROPERTY_NAMES_ARRAY = new String[0];
+
+ /**
+ * Properties update used as to collect property data from the provider.
+ */
+ private class PropertiesUpdate extends VMViewerUpdate implements IPropertiesUpdate {
+
+ private final String[] fProperties;
+ private final Map