--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/jface/viewers/TableLayout.d	Mon Mar 31 00:47:19 2008 +0200
@@ -0,0 +1,243 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2007 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.viewers.TableLayout;
+
+import dwtx.jface.viewers.ColumnLayoutData;
+import dwtx.jface.viewers.ColumnPixelData;
+import dwtx.jface.viewers.ColumnWeightData;
+
+import tango.util.collection.model.Seq;
+import tango.util.collection.ArraySeq;
+
+import dwt.DWT;
+import dwt.graphics.Point;
+import dwt.widgets.Composite;
+import dwt.widgets.Item;
+import dwt.widgets.Layout;
+import dwt.widgets.Table;
+import dwt.widgets.TableColumn;
+import dwt.widgets.Tree;
+import dwt.widgets.TreeColumn;
+import dwtx.core.runtime.Assert;
+import dwtx.jface.layout.TableColumnLayout;
+
+import dwt.dwthelper.utils;
+
+/**
+ * A layout for a table. Call <code>addColumnData</code> to add columns.
+ * The TableLayout {@link ColumnLayoutData} is only valid until the table
+ * is resized. To keep the proportions constant when the table is resized
+ * see {@link TableColumnLayout}
+ */
+public class TableLayout : Layout {
+
+    /**
+     * The number of extra pixels taken as horizontal trim by the table column.
+     * To ensure there are N pixels available for the content of the column,
+     * assign N+COLUMN_TRIM for the column width.
+     *
+     * @since 3.1
+     */
+    private static const int COLUMN_TRIM;
+    static this(){
+        COLUMN_TRIM = "carbon".equals(DWT.getPlatform()) ? 24 : 3; //$NON-NLS-1$
+    }
+
+    /**
+     * The list of column layout data (element type:
+     * <code>ColumnLayoutData</code>).
+     */
+    private Seq!(ColumnLayoutData) columns;
+
+    /**
+     * Indicates whether <code>layout</code> has yet to be called.
+     */
+    private bool firstTime = true;
+
+    /**
+     * Creates a new table layout.
+     */
+    public this() {
+        columns = new ArraySeq!(ColumnLayoutData);
+    }
+
+    /**
+     * Adds a new column of data to this table layout.
+     *
+     * @param data
+     *            the column layout data
+     */
+    public void addColumnData(ColumnLayoutData data) {
+        columns.append(data);
+    }
+
+    /*
+     * (non-Javadoc) Method declared on Layout.
+     */
+    public Point computeSize(Composite c, int wHint, int hHint, bool flush) {
+        if (wHint !is DWT.DEFAULT && hHint !is DWT.DEFAULT) {
+            return new Point(wHint, hHint);
+        }
+
+        Table table = cast(Table) c;
+        // To avoid recursions.
+        table.setLayout(null);
+        // Use native layout algorithm
+        Point result = table.computeSize(wHint, hHint, flush);
+        table.setLayout(this);
+
+        int width = 0;
+        int size = columns.size();
+        foreach( layoutData; columns ){
+            if ( auto col = cast(ColumnPixelData) layoutData ) {
+                width += col.width;
+                if (col.addTrim) {
+                    width += COLUMN_TRIM;
+                }
+            } else if ( auto col = cast(ColumnWeightData) layoutData ) {
+                width += col.minimumWidth;
+            } else {
+                Assert.isTrue(false, "Unknown column layout data");//$NON-NLS-1$
+            }
+        }
+        if (width > result.x) {
+            result.x = width;
+        }
+        return result;
+    }
+
+    /*
+     * (non-Javadoc) Method declared on Layout.
+     */
+    public void layout(Composite c, bool flush) {
+        // Only do initial layout. Trying to maintain proportions when resizing
+        // is too hard,
+        // causes lots of widget flicker, causes scroll bars to appear and
+        // occasionally stick around (on Windows),
+        // requires hooking column resizing as well, and may not be what the
+        // user wants anyway.
+        if (!firstTime) {
+            return;
+        }
+
+        int width = c.getClientArea().width;
+
+        // XXX: Layout is being called with an invalid value the first time
+        // it is being called on Linux. This method resets the
+        // Layout to null so we make sure we run it only when
+        // the value is OK.
+        if (width <= 1) {
+            return;
+        }
+
+        Item[] tableColumns = getColumns(c);
+        int size = Math.min(columns.size(), tableColumns.length);
+        int[] widths = new int[size];
+        int fixedWidth = 0;
+        int numberOfWeightColumns = 0;
+        int totalWeight = 0;
+
+        // First calc space occupied by fixed columns
+        for (int i = 0; i < size; i++) {
+            ColumnLayoutData col = /+cast(ColumnLayoutData)+/ columns.get(i);
+            if ( auto cpd = cast(ColumnPixelData) col ) {
+                int pixels = cpd.width;
+                if (cpd.addTrim) {
+                    pixels += COLUMN_TRIM;
+                }
+                widths[i] = pixels;
+                fixedWidth += pixels;
+            } else if ( auto cw = cast(ColumnWeightData) col ) {
+                numberOfWeightColumns++;
+                // first time, use the weight specified by the column data,
+                // otherwise use the actual width as the weight
+                // int weight = firstTime ? cw.weight :
+                // tableColumns[i].getWidth();
+                int weight = cw.weight;
+                totalWeight += weight;
+            } else {
+                Assert.isTrue(false, "Unknown column layout data");//$NON-NLS-1$
+            }
+        }
+
+        // Do we have columns that have a weight
+        if (numberOfWeightColumns > 0) {
+            // Now distribute the rest to the columns with weight.
+            int rest = width - fixedWidth;
+            int totalDistributed = 0;
+            for (int i = 0; i < size; ++i) {
+                ColumnLayoutData col = /+cast(ColumnLayoutData)+/ columns.get(i);
+                if (auto cw = cast(ColumnWeightData) col ) {
+                    // calculate weight as above
+                    // int weight = firstTime ? cw.weight :
+                    // tableColumns[i].getWidth();
+                    int weight = cw.weight;
+                    int pixels = totalWeight is 0 ? 0 : weight * rest
+                            / totalWeight;
+                    if (pixels < cw.minimumWidth) {
+                        pixels = cw.minimumWidth;
+                    }
+                    totalDistributed += pixels;
+                    widths[i] = pixels;
+                }
+            }
+
+            // Distribute any remaining pixels to columns with weight.
+            int diff = rest - totalDistributed;
+            for (int i = 0; diff > 0; ++i) {
+                if (i is size) {
+                    i = 0;
+                }
+                ColumnLayoutData col = /+cast(ColumnLayoutData)+/ columns.get(i);
+                if (cast(ColumnWeightData)col ) {
+                    ++widths[i];
+                    --diff;
+                }
+            }
+        }
+
+        firstTime = false;
+
+        for (int i = 0; i < size; i++) {
+            setWidth(tableColumns[i], widths[i]);
+        }
+    }
+
+    /**
+     * Set the width of the item.
+     *
+     * @param item
+     * @param width
+     */
+    private void setWidth(Item item, int width) {
+        if ( cast(TreeColumn)item ) {
+            (cast(TreeColumn) item).setWidth(width);
+        } else {
+            (cast(TableColumn) item).setWidth(width);
+        }
+
+    }
+
+    /**
+     * Return the columns for the receiver.
+     *
+     * @param composite
+     * @return Item[]
+     */
+    private Item[] getColumns(Composite composite) {
+        if (cast(Tree)composite ) {
+            return (cast(Tree) composite).getColumns();
+        }
+        return (cast(Table) composite).getColumns();
+    }
+}