--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractComboBoxCellEditor.d	Sat Mar 14 18:23:29 2009 +0100
@@ -0,0 +1,122 @@
+/*******************************************************************************
+ * Copyright (c) 2008 Tom Schindl 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:
+ *     Tom Schindl <tom.schindl@bestsolution.at> - initial API and implementation (bug 174739)
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ ******************************************************************************/
+
+module org.eclipse.jface.viewers.AbstractComboBoxCellEditor;
+
+import org.eclipse.jface.viewers.CellEditor;
+import org.eclipse.jface.viewers.ColumnViewerEditorActivationEvent;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.custom.CCombo;
+import org.eclipse.swt.widgets.Composite;
+
+import java.lang.all;
+import java.util.Set;
+
+/**
+ * Abstract base class for Cell-Editors presented as combo boxes
+ *
+ * @since 3.4
+ *
+ */
+abstract class AbstractComboBoxCellEditor : CellEditor {
+    /**
+     * The list is dropped down when the activation is done through the mouse
+     */
+    public static const int DROP_DOWN_ON_MOUSE_ACTIVATION = 1;
+
+    /**
+     * The list is dropped down when the activation is done through the keyboard
+     */
+    public static const int DROP_DOWN_ON_KEY_ACTIVATION = 1 << 1;
+
+    /**
+     * The list is dropped down when the activation is done without
+     * ui-interaction
+     */
+    public static const int DROP_DOWN_ON_PROGRAMMATIC_ACTIVATION = 1 << 2;
+
+    /**
+     * The list is dropped down when the activation is done by traversing from
+     * cell to cell
+     */
+    public static const int DROP_DOWN_ON_TRAVERSE_ACTIVATION = 1 << 3;
+
+    private int activationStyle = SWT.NONE;
+
+    /**
+     * Create a new cell-editor
+     *
+     * @param parent
+     *            the parent of the combo
+     * @param style
+     *            the style used to create the combo
+     */
+    this(Composite parent, int style) {
+        super(parent, style);
+    }
+
+    /**
+     * Creates a new cell editor with no control and no st of choices.
+     * Initially, the cell editor has no cell validator.
+     *
+     */
+    this() {
+    }
+
+    /*
+     * (non-Javadoc)
+     *
+     * @see org.eclipse.jface.viewers.CellEditor#activate(org.eclipse.jface.viewers.ColumnViewerEditorActivationEvent)
+     */
+    public void activate(ColumnViewerEditorActivationEvent activationEvent) {
+        super.activate(activationEvent);
+        if (activationStyle !is SWT.NONE) {
+            bool dropDown = false;
+            if ((activationEvent.eventType is ColumnViewerEditorActivationEvent.MOUSE_CLICK_SELECTION || activationEvent.eventType is ColumnViewerEditorActivationEvent.MOUSE_DOUBLE_CLICK_SELECTION)
+                    && (activationStyle & DROP_DOWN_ON_MOUSE_ACTIVATION) !is 0 ) {
+                dropDown = true;
+            } else if (activationEvent.eventType is ColumnViewerEditorActivationEvent.KEY_PRESSED
+                    && (activationStyle & DROP_DOWN_ON_KEY_ACTIVATION) !is 0 ) {
+                dropDown = true;
+            } else if (activationEvent.eventType is ColumnViewerEditorActivationEvent.PROGRAMMATIC
+                    && (activationStyle & DROP_DOWN_ON_PROGRAMMATIC_ACTIVATION) !is 0) {
+                dropDown = true;
+            } else if (activationEvent.eventType is ColumnViewerEditorActivationEvent.TRAVERSAL
+                    && (activationStyle & DROP_DOWN_ON_TRAVERSE_ACTIVATION) !is 0) {
+                dropDown = true;
+            }
+
+            if (dropDown) {
+                getControl().getDisplay().asyncExec(new class Runnable {
+
+                    public void run() {
+                        (cast(CCombo) getControl()).setListVisible(true);
+                    }
+
+                });
+
+            }
+        }
+    }
+
+    /**
+     * This method allows to control how the combo reacts when activated
+     *
+     * @param activationStyle
+     *            the style used
+     */
+    public void setActivationStyle(int activationStyle) {
+        this.activationStyle = activationStyle;
+    }
+}