1 files changed, 114 insertions, 0 deletions
diff --git a/bundles/org.eclipse.wst.css.core/src/org/eclipse/wst/css/core/util/CSSClassTraverser.java b/bundles/org.eclipse.wst.css.core/src/org/eclipse/wst/css/core/util/CSSClassTraverser.java
new file mode 100644
index 0000000000..042a314d52
--- /dev/null
+++ b/bundles/org.eclipse.wst.css.core/src/org/eclipse/wst/css/core/util/CSSClassTraverser.java
@@ -0,0 +1,114 @@
+/*******************************************************************************
+ * Copyright (c) 2004 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.wst.css.core.util;
+
+
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Iterator;
+
+import org.eclipse.wst.css.core.document.ICSSImportRule;
+import org.eclipse.wst.css.core.document.ICSSMediaRule;
+import org.eclipse.wst.css.core.document.ICSSNode;
+import org.eclipse.wst.css.core.document.ICSSSelector;
+import org.eclipse.wst.css.core.document.ICSSSelectorItem;
+import org.eclipse.wst.css.core.document.ICSSSelectorList;
+import org.eclipse.wst.css.core.document.ICSSSimpleSelector;
+import org.eclipse.wst.css.core.document.ICSSStyleRule;
+import org.eclipse.wst.css.core.document.ICSSStyleSheet;
+
+
+/**
+ * 
+ */
+public class CSSClassTraverser extends AbstractCssTraverser {
+
+	ArrayList fClassNames;
+
+	/**
+	 * 
+	 */
+	public CSSClassTraverser() {
+		super();
+	}
+
+	/**
+	 * 
+	 */
+	private void addClassNames(ICSSStyleRule rule) {
+		ICSSSelectorList selectorList = rule.getSelectors();
+		Iterator iSelector = selectorList.getIterator();
+		while (iSelector.hasNext()) {
+			ICSSSelector selector = (ICSSSelector) iSelector.next();
+			Iterator iItem = selector.getIterator();
+			while (iItem.hasNext()) {
+				ICSSSelectorItem item = (ICSSSelectorItem) iItem.next();
+				if (item.getItemType() == ICSSSelectorItem.SIMPLE) {
+					ICSSSimpleSelector sel = (ICSSSimpleSelector) item;
+					int nClasses = sel.getNumOfClasses();
+					for (int iClass = 0; iClass < nClasses; iClass++) {
+						String className = sel.getClass(iClass);
+						if (!fClassNames.contains(className))
+							fClassNames.add(className);
+					}
+				}
+			}
+		}
+	}
+
+	/**
+	 * 
+	 */
+	protected void begin(ICSSNode node) {
+		if (fClassNames == null)
+			fClassNames = new ArrayList();
+	}
+
+	/**
+	 * 
+	 */
+	protected void end(ICSSNode node) {
+	}
+
+	/**
+	 * 
+	 */
+	public Collection getClassNames() {
+		return (fClassNames != null) ? fClassNames : Collections.EMPTY_LIST;
+	}
+
+	/**
+	 * 
+	 */
+	protected short postNode(ICSSNode node) {
+		return TRAV_CONT;
+	}
+
+	/**
+	 * 
+	 */
+	protected short preNode(ICSSNode node) {
+		short ret;
+		if (node instanceof ICSSStyleRule) {
+			addClassNames((ICSSStyleRule) node);
+			ret = TRAV_PRUNE;
+		}
+		else if (node instanceof ICSSStyleSheet || node instanceof ICSSMediaRule || node instanceof ICSSImportRule) {
+			ret = TRAV_CONT;
+		}
+		else {
+			ret = TRAV_PRUNE;
+		}
+		return ret;
+	}
+}
+\ No newline at end of file