--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/jface/viewers/ComboBoxViewerCellEditor.d	Thu May 22 01:36:46 2008 +0200
@@ -0,0 +1,267 @@
+/*******************************************************************************
+ * Copyright (c) 2006 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
+ *                                                 bugfix in 174739
+ *     Eric Rizzo - bug 213315
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+
+module dwtx.jface.viewers.ComboBoxViewerCellEditor;
+
+import java.text.MessageFormat;
+
+import dwt.DWT;
+import dwt.custom.CCombo;
+import dwt.events.FocusAdapter;
+import dwt.events.FocusEvent;
+import dwt.events.KeyAdapter;
+import dwt.events.KeyEvent;
+import dwt.events.SelectionAdapter;
+import dwt.events.SelectionEvent;
+import dwt.events.TraverseEvent;
+import dwt.events.TraverseListener;
+import dwt.graphics.GC;
+import dwt.widgets.Composite;
+import dwt.widgets.Control;
+import dwtx.core.runtime.Assert;
+
+/**
+ * A cell editor that presents a list of items in a combo box. In contrast to
+ * {@link ComboBoxCellEditor} it wraps the underlying {@link CCombo} using a
+ * {@link ComboViewer}
+ */
+public class ComboBoxViewerCellEditor extends AbstractComboBoxCellEditor {
+
+    /**
+     * The custom combo box control.
+     */
+    ComboViewer viewer;
+
+    Object selectedValue;
+
+    /**
+     * Default ComboBoxCellEditor style
+     */
+    private static final int defaultStyle = DWT.NONE;
+
+    /**
+     * Creates a new cell editor with a combo viewer and a default style
+     *
+     * @param parent
+     *            the parent control
+     */
+    public ComboBoxViewerCellEditor(Composite parent) {
+        this(parent, defaultStyle);
+    }
+
+    /**
+     * Creates a new cell editor with a combo viewer and the given style
+     *
+     * @param parent
+     *            the parent control
+     * @param style
+     *            the style bits
+     */
+    public ComboBoxViewerCellEditor(Composite parent, int style) {
+        super(parent, style);
+        setValueValid(true);
+    }
+
+    /*
+     * (non-Javadoc) Method declared on CellEditor.
+     */
+    protected Control createControl(Composite parent) {
+
+        CCombo comboBox = new CCombo(parent, getStyle());
+        comboBox.setFont(parent.getFont());
+        viewer = new ComboViewer(comboBox);
+
+        comboBox.addKeyListener(new KeyAdapter() {
+            // hook key pressed - see PR 14201
+            public void keyPressed(KeyEvent e) {
+                keyReleaseOccured(e);
+            }
+        });
+
+        comboBox.addSelectionListener(new SelectionAdapter() {
+            public void widgetDefaultSelected(SelectionEvent event) {
+                applyEditorValueAndDeactivate();
+            }
+
+            public void widgetSelected(SelectionEvent event) {
+                ISelection selection = viewer.getSelection();
+                if (selection.isEmpty()) {
+                    selectedValue = null;
+                } else {
+                    selectedValue = ((IStructuredSelection) selection)
+                            .getFirstElement();
+                }
+            }
+        });
+
+        comboBox.addTraverseListener(new TraverseListener() {
+            public void keyTraversed(TraverseEvent e) {
+                if (e.detail is DWT.TRAVERSE_ESCAPE
+                        || e.detail is DWT.TRAVERSE_RETURN) {
+                    e.doit = false;
+                }
+            }
+        });
+
+        comboBox.addFocusListener(new FocusAdapter() {
+            public void focusLost(FocusEvent e) {
+                ComboBoxViewerCellEditor.this.focusLost();
+            }
+        });
+        return comboBox;
+    }
+
+    /**
+     * The <code>ComboBoxCellEditor</code> implementation of this
+     * <code>CellEditor</code> framework method returns the zero-based index
+     * of the current selection.
+     *
+     * @return the zero-based index of the current selection wrapped as an
+     *         <code>Integer</code>
+     */
+    protected Object doGetValue() {
+        return selectedValue;
+    }
+
+    /*
+     * (non-Javadoc) Method declared on CellEditor.
+     */
+    protected void doSetFocus() {
+        viewer.getControl().setFocus();
+    }
+
+    /**
+     * The <code>ComboBoxCellEditor</code> implementation of this
+     * <code>CellEditor</code> framework method sets the minimum width of the
+     * cell. The minimum width is 10 characters if <code>comboBox</code> is
+     * not <code>null</code> or <code>disposed</code> eles it is 60 pixels
+     * to make sure the arrow button and some text is visible. The list of
+     * CCombo will be wide enough to show its longest item.
+     */
+    public LayoutData getLayoutData() {
+        LayoutData layoutData = super.getLayoutData();
+        if ((viewer.getControl() is null) || viewer.getControl().isDisposed()) {
+            layoutData.minimumWidth = 60;
+        } else {
+            // make the comboBox 10 characters wide
+            GC gc = new GC(viewer.getControl());
+            layoutData.minimumWidth = (gc.getFontMetrics()
+                    .getAverageCharWidth() * 10) + 10;
+            gc.dispose();
+        }
+        return layoutData;
+    }
+
+    /**
+     * Set a new value
+     *
+     * @param value
+     *            the new value
+     */
+    protected void doSetValue(Object value) {
+        Assert.isTrue(viewer !is null);
+        selectedValue = value;
+        if (value is null) {
+            viewer.setSelection(StructuredSelection.EMPTY);
+        } else {
+            viewer.setSelection(new StructuredSelection(value));
+        }
+    }
+
+    /**
+     * @param labelProvider
+     *            the label provider used
+     * @see StructuredViewer#setLabelProvider(IBaseLabelProvider)
+     */
+    public void setLabelProvider(IBaseLabelProvider labelProvider) {
+        viewer.setLabelProvider(labelProvider);
+    }
+
+    /**
+     * @param provider
+     *            the content provider used
+     * @see StructuredViewer#setContentProvider(IContentProvider)
+     */
+    public void setContenProvider(IStructuredContentProvider provider) {
+        viewer.setContentProvider(provider);
+    }
+
+    /**
+     * @param input
+     *            the input used
+     * @see StructuredViewer#setInput(Object)
+     */
+    public void setInput(Object input) {
+        viewer.setInput(input);
+    }
+
+    /**
+     * @return get the viewer
+     */
+    public ComboViewer getViewer() {
+        return viewer;
+    }
+
+    /**
+     * Applies the currently selected value and deactiavates the cell editor
+     */
+    void applyEditorValueAndDeactivate() {
+        // must set the selection before getting value
+        ISelection selection = viewer.getSelection();
+        if (selection.isEmpty()) {
+            selectedValue = null;
+        } else {
+            selectedValue = ((IStructuredSelection) selection)
+                    .getFirstElement();
+        }
+
+        Object newValue = doGetValue();
+        markDirty();
+        bool isValid = isCorrect(newValue);
+        setValueValid(isValid);
+
+        if (!isValid) {
+            MessageFormat.format(getErrorMessage(),
+                    new Object[] { selectedValue });
+        }
+
+        fireApplyEditorValue();
+        deactivate();
+    }
+
+    /*
+     * (non-Javadoc)
+     *
+     * @see dwtx.jface.viewers.CellEditor#focusLost()
+     */
+    protected void focusLost() {
+        if (isActivated()) {
+            applyEditorValueAndDeactivate();
+        }
+    }
+
+    /*
+     * (non-Javadoc)
+     *
+     * @see dwtx.jface.viewers.CellEditor#keyReleaseOccured(dwt.events.KeyEvent)
+     */
+    protected void keyReleaseOccured(KeyEvent keyEvent) {
+        if (keyEvent.character is '\u001b') { // Escape character
+            fireCancelEditor();
+        } else if (keyEvent.character is '\t') { // tab key
+            applyEditorValueAndDeactivate();
+        }
+    }
+}