--- /dev/null
+/*******************************************************************************
+ * Copyright (c) 2000, 2003 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ *
+ * Contributors:
+ * IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package net.sourceforge.phpdt.internal.ui.util;
+
+import java.util.ArrayList;
+import java.util.List;
+
+//incastrix
+//import org.eclipse.jface.text.Assert;
+import org.eclipse.core.runtime.Assert;
+import org.eclipse.jface.viewers.ColumnLayoutData;
+import org.eclipse.jface.viewers.ColumnPixelData;
+import org.eclipse.jface.viewers.ColumnWeightData;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.ControlAdapter;
+import org.eclipse.swt.events.ControlEvent;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.graphics.Rectangle;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Table;
+import org.eclipse.swt.widgets.TableColumn;
+
+/**
+ * A special composite to layout columns inside a table. The composite is needed
+ * since we have to layout the columns "before" the actual table gets layouted.
+ * Hence we can't use a normal layout manager.
+ */
+public class TableLayoutComposite extends Composite {
+
+ private List columns = new ArrayList();
+
+ /**
+ * Creates a new <code>TableLayoutComposite</code>.
+ */
+ public TableLayoutComposite(Composite parent, int style) {
+ super(parent, style);
+ addControlListener(new ControlAdapter() {
+ public void controlResized(ControlEvent e) {
+ Rectangle area = getClientArea();
+ Table table = (Table) getChildren()[0];
+ Point preferredSize = computeTableSize(table);
+ int width = area.width - 2 * table.getBorderWidth();
+ if (preferredSize.y > area.height) {
+ // Subtract the scrollbar width from the total column width
+ // if a vertical scrollbar will be required
+ Point vBarSize = table.getVerticalBar().getSize();
+ width -= vBarSize.x;
+ }
+ layoutTable(table, width, area, table.getSize().x < area.width);
+ }
+ });
+ }
+
+ /**
+ * Adds a new column of data to this table layout.
+ *
+ * @param data
+ * the column layout data
+ */
+ public void addColumnData(ColumnLayoutData data) {
+ columns.add(data);
+ }
+
+ // ---- Helpers
+ // -------------------------------------------------------------------------------------
+
+ private Point computeTableSize(Table table) {
+ Point result = table.computeSize(SWT.DEFAULT, SWT.DEFAULT);
+
+ int width = 0;
+ int size = columns.size();
+ for (int i = 0; i < size; ++i) {
+ ColumnLayoutData layoutData = (ColumnLayoutData) columns.get(i);
+ if (layoutData instanceof ColumnPixelData) {
+ ColumnPixelData col = (ColumnPixelData) layoutData;
+ width += col.width;
+ } else if (layoutData instanceof ColumnWeightData) {
+ ColumnWeightData col = (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;
+ }
+
+ private void layoutTable(Table table, int width, Rectangle area,
+ boolean increase) {
+ // 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;
+
+ TableColumn[] tableColumns = table.getColumns();
+ 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 = (ColumnLayoutData) columns.get(i);
+ if (col instanceof ColumnPixelData) {
+ int pixels = ((ColumnPixelData) col).width;
+ widths[i] = pixels;
+ fixedWidth += pixels;
+ } else if (col instanceof ColumnWeightData) {
+ ColumnWeightData cw = (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 = (ColumnLayoutData) columns.get(i);
+ if (col instanceof ColumnWeightData) {
+ ColumnWeightData cw = (ColumnWeightData) col;
+ // calculate weight as above
+ // int weight = firstTime ? cw.weight :
+ // tableColumns[i].getWidth();
+ int weight = cw.weight;
+ int pixels = totalWeight == 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 == size)
+ i = 0;
+ ColumnLayoutData col = (ColumnLayoutData) columns.get(i);
+ if (col instanceof ColumnWeightData) {
+ ++widths[i];
+ --diff;
+ }
+ }
+ }
+
+ if (increase) {
+ table.setSize(area.width, area.height);
+ }
+ for (int i = 0; i < size; i++) {
+ tableColumns[i].setWidth(widths[i]);
+ }
+ if (!increase) {
+ table.setSize(area.width, area.height);
+ }
+ }
+}
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