--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/draw2d/text/FlowContainerLayout.d	Sun Aug 03 00:52:14 2008 +0200
@@ -0,0 +1,133 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2005 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.draw2d.text.FlowContainerLayout;
+
+import dwt.dwthelper.utils;
+import dwtx.dwtxhelper.Collection;
+
+import dwtx.draw2d.Figure;
+import dwtx.draw2d.text.FlowFigureLayout;
+import dwtx.draw2d.text.FlowBox;
+import dwtx.draw2d.text.LineBox;
+import dwtx.draw2d.text.FlowContext;
+import dwtx.draw2d.text.FlowFigure;
+
+/**
+ * A layout for FlowFigures with children.
+ *
+ * <P>WARNING: This class is not intended to be subclassed by clients.
+ * @author hudsonr
+ * @since 2.1
+ */
+public abstract class FlowContainerLayout
+    : FlowFigureLayout
+    , FlowContext
+{
+
+/**
+ * the current line
+ */
+LineBox currentLine;
+
+/**
+ * @see dwtx.draw2d.text.FlowFigureLayout#FlowFigureLayout(FlowFigure)
+ */
+protected this(FlowFigure flowFigure) {
+    super(flowFigure);
+}
+
+/**
+ * Adds the given box the current line and clears the context's state.
+ * @see dwtx.draw2d.text.FlowContext#addToCurrentLine(FlowBox)
+ */
+public void addToCurrentLine(FlowBox child) {
+    getCurrentLine().add(child);
+    setContinueOnSameLine(false);
+}
+
+/**
+ * Flush anything pending and free all temporary data used during layout.
+ */
+protected void cleanup() {
+    currentLine = null;
+}
+
+/**
+ * Used by getCurrentLine().
+ */
+protected abstract void createNewLine();
+
+/**
+ * Called after {@link #layoutChildren()} when all children have been laid out. This
+ * method exists to flush the last line.
+ */
+protected abstract void flush();
+
+/**
+ * FlowBoxes shouldn't be added directly to the current line.  Use
+ * {@link #addToCurrentLine(FlowBox)} for that.
+ * @see dwtx.draw2d.text.FlowContext#getCurrentLine()
+ */
+LineBox getCurrentLine() {
+    if (currentLine is null)
+        createNewLine();
+    return currentLine;
+}
+
+/**
+ * @see FlowContext#getRemainingLineWidth()
+ */
+public int getRemainingLineWidth() {
+    return getCurrentLine().getAvailableWidth();
+}
+
+/**
+ * @see FlowContext#isCurrentLineOccupied()
+ */
+public bool isCurrentLineOccupied() {
+    return currentLine !is null && currentLine.isOccupied();
+}
+
+/**
+ * @see FlowFigureLayout#layout()
+ */
+protected void layout() {
+    preLayout();
+    layoutChildren();
+    flush();
+    cleanup();
+}
+
+/**
+ * Layout all children.
+ */
+protected void layoutChildren() {
+    List children = getFlowFigure().getChildren();
+    for (int i = 0; i < children.size(); i++) {
+        Figure f = cast(Figure)children.get(i);
+        if (forceChildInvalidation(f))
+            f.invalidate();
+        f.validate();
+    }
+}
+
+bool forceChildInvalidation(Figure f) {
+    return true;
+}
+
+/**
+ * Called before layoutChildren() to setup any necessary state.
+ */
+protected abstract void preLayout();
+
+}