--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/jface/text/DefaultTextDoubleClickStrategy.d	Sat Aug 23 19:10:48 2008 +0200
@@ -0,0 +1,228 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2008 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
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+
+module dwtx.jface.text.DefaultTextDoubleClickStrategy;
+
+import dwt.dwthelper.utils;
+
+import java.text.CharacterIterator;
+
+import com.ibm.icu.text.BreakIterator;
+
+/**
+ * Standard implementation of
+ * {@link dwtx.jface.text.ITextDoubleClickStrategy}.
+ * <p>
+ * Selects words using <code>java.text.BreakIterator</code> for the default
+ * locale.</p>
+ * <p>
+ * This class is not intended to be subclassed.
+ * </p>
+ *
+ * @see java.text.BreakIterator
+ * @noextend This class is not intended to be subclassed by clients.
+ */
+public class DefaultTextDoubleClickStrategy : ITextDoubleClickStrategy {
+
+
+    /**
+     * Implements a character iterator that works directly on
+     * instances of <code>IDocument</code>. Used to collaborate with
+     * the break iterator.
+     *
+     * @see IDocument
+     * @since 2.0
+     */
+    static class DocumentCharacterIterator : CharacterIterator {
+
+        /** Document to iterate over. */
+        private IDocument fDocument;
+        /** Start offset of iteration. */
+        private int fOffset= -1;
+        /** End offset of iteration. */
+        private int fEndOffset= -1;
+        /** Current offset of iteration. */
+        private int fIndex= -1;
+
+        /** Creates a new document iterator. */
+        public DocumentCharacterIterator() {
+        }
+
+        /**
+         * Configures this document iterator with the document section to be visited.
+         *
+         * @param document the document to be iterated
+         * @param iteratorRange the range in the document to be iterated
+         */
+        public void setDocument(IDocument document, IRegion iteratorRange) {
+            fDocument= document;
+            fOffset= iteratorRange.getOffset();
+            fEndOffset= fOffset + iteratorRange.getLength();
+        }
+
+        /*
+         * @see CharacterIterator#first()
+         */
+        public char first() {
+            fIndex= fOffset;
+            return current();
+        }
+
+        /*
+         * @see CharacterIterator#last()
+         */
+        public char last() {
+            fIndex= fOffset < fEndOffset ? fEndOffset -1 : fEndOffset;
+            return current();
+        }
+
+        /*
+         * @see CharacterIterator#current()
+         */
+        public char current() {
+            if (fOffset <= fIndex && fIndex < fEndOffset) {
+                try {
+                    return fDocument.getChar(fIndex);
+                } catch (BadLocationException x) {
+                }
+            }
+            return DONE;
+        }
+
+        /*
+         * @see CharacterIterator#next()
+         */
+        public char next() {
+            ++fIndex;
+            int end= getEndIndex();
+            if (fIndex >= end) {
+                fIndex= end;
+                return DONE;
+            }
+            return current();
+        }
+
+        /*
+         * @see CharacterIterator#previous()
+         */
+        public char previous() {
+            if (fIndex is fOffset)
+                return DONE;
+
+            if (fIndex > fOffset)
+                -- fIndex;
+
+            return current();
+        }
+
+        /*
+         * @see CharacterIterator#setIndex(int)
+         */
+        public char setIndex(int index) {
+            fIndex= index;
+            return current();
+        }
+
+        /*
+         * @see CharacterIterator#getBeginIndex()
+         */
+        public int getBeginIndex() {
+            return fOffset;
+        }
+
+        /*
+         * @see CharacterIterator#getEndIndex()
+         */
+        public int getEndIndex() {
+            return fEndOffset;
+        }
+
+        /*
+         * @see CharacterIterator#getIndex()
+         */
+        public int getIndex() {
+            return fIndex;
+        }
+
+        /*
+         * @see CharacterIterator#clone()
+         */
+        public Object clone() {
+            DocumentCharacterIterator i= new DocumentCharacterIterator();
+            i.fDocument= fDocument;
+            i.fIndex= fIndex;
+            i.fOffset= fOffset;
+            i.fEndOffset= fEndOffset;
+            return i;
+        }
+    }
+
+
+    /**
+     * The document character iterator used by this strategy.
+     * @since 2.0
+     */
+    private DocumentCharacterIterator fDocIter= new DocumentCharacterIterator();
+
+
+    /**
+     * Creates a new default text double click strategy.
+     */
+    public DefaultTextDoubleClickStrategy() {
+        super();
+    }
+
+    /*
+     * @see dwtx.jface.text.ITextDoubleClickStrategy#doubleClicked(dwtx.jface.text.ITextViewer)
+     */
+    public void doubleClicked(ITextViewer text) {
+
+        int position= text.getSelectedRange().x;
+
+        if (position < 0)
+            return;
+
+        try {
+
+            IDocument document= text.getDocument();
+            IRegion line= document.getLineInformationOfOffset(position);
+            if (position is line.getOffset() + line.getLength())
+                return;
+
+            fDocIter.setDocument(document, line);
+
+            BreakIterator breakIter= BreakIterator.getWordInstance();
+            breakIter.setText(fDocIter);
+
+            int start= breakIter.preceding(position);
+            if (start is BreakIterator.DONE)
+                start= line.getOffset();
+
+            int end= breakIter.following(position);
+            if (end is BreakIterator.DONE)
+                end= line.getOffset() + line.getLength();
+
+            if (breakIter.isBoundary(position)) {
+                if (end - position > position- start)
+                    start= position;
+                else
+                    end= position;
+            }
+
+            if (start !is end)
+                text.setSelectedRange(start, end - start);
+
+        } catch (BadLocationException x) {
+        }
+    }
+}