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diff --git a/bundles/org.simantics.scl.ui/src/org/simantics/scl/ui/editor2/iterator/JavaWordIterator.java b/bundles/org.simantics.scl.ui/src/org/simantics/scl/ui/editor2/iterator/JavaWordIterator.java
new file mode 100644
index 000000000..403cc9df3
--- /dev/null
+++ b/bundles/org.simantics.scl.ui/src/org/simantics/scl/ui/editor2/iterator/JavaWordIterator.java
@@ -0,0 +1,224 @@
+package org.simantics.scl.ui.editor2.iterator;
+
+import java.text.CharacterIterator;
+
+import com.ibm.icu.text.BreakIterator;
+
+import org.eclipse.core.runtime.Assert;
+
+
+
+/**
+ * Breaks java text into word starts, also stops at line start and end. No
+ * direction dependency.
+ *
+ * @since 3.0
+ */
+public class JavaWordIterator extends BreakIterator {
+
+	/**
+	 * The underlying java break iterator. It returns all breaks, including
+	 * before and after every whitespace.
+	 */
+	private JavaBreakIterator fIterator;
+	/** The current index for the stateful operations. */
+	private int fIndex;
+
+	/**
+	 * Creates a new word iterator.
+	 */
+	public JavaWordIterator() {
+		fIterator= new JavaBreakIterator();
+		first();
+	}
+
+	/*
+	 * @see java.text.BreakIterator#first()
+	 */
+	@Override
+	public int first() {
+		fIndex= fIterator.first();
+		return fIndex;
+	}
+
+	/*
+	 * @see java.text.BreakIterator#last()
+	 */
+	@Override
+	public int last() {
+		fIndex= fIterator.last();
+		return fIndex;
+	}
+
+	/*
+	 * @see java.text.BreakIterator#next(int)
+	 */
+	@Override
+	public int next(int n) {
+		int next= 0;
+		while (--n > 0 && next != DONE) {
+			next= next();
+		}
+		return next;
+	}
+
+	/*
+	 * @see java.text.BreakIterator#next()
+	 */
+	@Override
+	public int next() {
+		fIndex= following(fIndex);
+		return fIndex;
+	}
+
+	/*
+	 * @see java.text.BreakIterator#previous()
+	 */
+	@Override
+	public int previous() {
+		fIndex= preceding(fIndex);
+		return fIndex;
+	}
+
+
+	/*
+	 * @see java.text.BreakIterator#preceding(int)
+	 */
+	@Override
+	public int preceding(int offset) {
+		int first= fIterator.preceding(offset);
+		if (isWhitespace(first, offset)) {
+			int second= fIterator.preceding(first);
+			if (second != DONE && !isDelimiter(second, first))
+				return second;
+		}
+		return first;
+	}
+
+	/*
+	 * @see java.text.BreakIterator#following(int)
+	 */
+	@Override
+	public int following(int offset) {
+		int first= fIterator.following(offset);
+		if (eatFollowingWhitespace(offset, first)) {
+			int second= fIterator.following(first);
+			if (isWhitespace(first, second))
+				return second;
+		}
+		return first;
+	}
+
+	private boolean eatFollowingWhitespace(int offset, int exclusiveEnd) {
+		if (exclusiveEnd == DONE || offset == DONE)
+			return false;
+
+		if (isWhitespace(offset, exclusiveEnd))
+			return false;
+		if (isDelimiter(offset, exclusiveEnd))
+			return false;
+
+		return true;
+	}
+
+	/**
+	 * Returns <code>true</code> if the given sequence into the underlying text
+	 * represents a delimiter, <code>false</code> otherwise.
+	 *
+	 * @param offset the offset
+	 * @param exclusiveEnd the end offset
+	 * @return <code>true</code> if the given range is a delimiter
+	 */
+	private boolean isDelimiter(int offset, int exclusiveEnd) {
+		if (exclusiveEnd == DONE || offset == DONE)
+			return false;
+
+		Assert.isTrue(offset >= 0);
+		Assert.isTrue(exclusiveEnd <= getText().getEndIndex());
+		Assert.isTrue(exclusiveEnd > offset);
+
+		CharSequence seq= fIterator.fText;
+
+		while (offset < exclusiveEnd) {
+			char ch= seq.charAt(offset);
+			if (ch != '\n' && ch != '\r')
+				return false;
+			offset++;
+		}
+
+		return true;
+	}
+
+	/**
+	 * Returns <code>true</code> if the given sequence into the underlying text
+	 * represents whitespace, but not a delimiter, <code>false</code> otherwise.
+	 *
+	 * @param offset the offset
+	 * @param exclusiveEnd the end offset
+	 * @return <code>true</code> if the given range is whitespace
+	 */
+	private boolean isWhitespace(int offset, int exclusiveEnd) {
+		if (exclusiveEnd == DONE || offset == DONE)
+			return false;
+
+		Assert.isTrue(offset >= 0);
+		Assert.isTrue(exclusiveEnd <= getText().getEndIndex());
+		Assert.isTrue(exclusiveEnd > offset);
+
+		CharSequence seq= fIterator.fText;
+
+		while (offset < exclusiveEnd) {
+			char ch= seq.charAt(offset);
+			if (!Character.isWhitespace(ch))
+				return false;
+			if (ch == '\n' || ch == '\r')
+				return false;
+			offset++;
+		}
+
+		return true;
+	}
+
+	/*
+	 * @see java.text.BreakIterator#current()
+	 */
+	@Override
+	public int current() {
+		return fIndex;
+	}
+
+	/*
+	 * @see java.text.BreakIterator#getText()
+	 */
+	@Override
+	public CharacterIterator getText() {
+		return fIterator.getText();
+	}
+
+	/**
+	 * Sets the text as <code>CharSequence</code>.
+	 * @param newText the new text
+	 */
+	public void setText(CharSequence newText) {
+		fIterator.setText(newText);
+		first();
+	}
+
+	/*
+	 * @see java.text.BreakIterator#setText(java.text.CharacterIterator)
+	 */
+	@Override
+	public void setText(CharacterIterator newText) {
+		fIterator.setText(newText);
+		first();
+	}
+
+	/*
+	 * @see java.text.BreakIterator#setText(java.lang.String)
+	 */
+	@Override
+	public void setText(String newText) {
+		setText((CharSequence) newText);
+	}
+
+}