--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwt/widgets/Sash.d	Sat Aug 09 17:00:02 2008 +0200
@@ -0,0 +1,327 @@
+/*******************************************************************************
+ * 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
+ *******************************************************************************/
+module dwt.widgets.Sash;
+
+import dwt.dwthelper.utils;
+
+import dwt.DWT;
+import dwt.DWTException;
+import dwt.events.SelectionEvent;
+import dwt.events.SelectionListener;
+import dwt.graphics.Cursor;
+import dwt.graphics.Point;
+import dwt.graphics.Rectangle;
+import dwt.internal.cocoa.NSEvent;
+import dwt.internal.cocoa.NSPoint;
+import dwt.internal.cocoa.NSRect;
+import dwt.internal.cocoa.OS;
+import dwt.internal.cocoa.SWTView;
+
+/**
+ * Instances of the receiver represent a selectable user interface object
+ * that allows the user to drag a rubber banded outline of the sash within
+ * the parent control.
+ * <dl>
+ * <dt><b>Styles:</b></dt>
+ * <dd>HORIZONTAL, VERTICAL, SMOOTH</dd>
+ * <dt><b>Events:</b></dt>
+ * <dd>Selection</dd>
+ * </dl>
+ * <p>
+ * Note: Only one of the styles HORIZONTAL and VERTICAL may be specified.
+ * </p><p>
+ * IMPORTANT: This class is intended to be subclassed <em>only</em>
+ * within the DWT implementation.
+ * </p>
+ */
+public class Sash extends Control {
+    Cursor sizeCursor;
+    bool dragging;
+    int lastX, lastY, startX, startY;
+    private final static int INCREMENT = 1;
+    private final static int PAGE_INCREMENT = 9;
+
+/**
+ * Constructs a new instance of this class given its parent
+ * and a style value describing its behavior and appearance.
+ * <p>
+ * The style value is either one of the style constants defined in
+ * class <code>DWT</code> which is applicable to instances of this
+ * class, or must be built by <em>bitwise OR</em>'ing together 
+ * (that is, using the <code>int</code> "|" operator) two or more
+ * of those <code>DWT</code> style constants. The class description
+ * lists the style constants that are applicable to the class.
+ * Style bits are also inherited from superclasses.
+ * </p>
+ *
+ * @param parent a composite control which will be the parent of the new instance (cannot be null)
+ * @param style the style of control to construct
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
+ * </ul>
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
+ *    <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
+ * </ul>
+ *
+ * @see DWT#HORIZONTAL
+ * @see DWT#VERTICAL
+ * @see Widget#checkSubclass
+ * @see Widget#getStyle
+ */
+public Sash (Composite parent, int style) {
+    super (parent, checkStyle (style));
+    int cursorStyle = (style & DWT.VERTICAL) !is 0 ? DWT.CURSOR_SIZEWE : DWT.CURSOR_SIZENS;
+    sizeCursor = new Cursor (display, cursorStyle);
+}
+
+/**
+ * Adds the listener to the collection of listeners who will
+ * be notified when the control is selected by the user, by sending
+ * it one of the messages defined in the <code>SelectionListener</code>
+ * interface.
+ * <p>
+ * When <code>widgetSelected</code> is called, the x, y, width, and height fields of the event object are valid.
+ * If the receiver is being dragged, the event object detail field contains the value <code>DWT.DRAG</code>.
+ * <code>widgetDefaultSelected</code> is not called.
+ * </p>
+ *
+ * @param listener the listener which should be notified when the control is selected by the user
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * @exception DWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see SelectionListener
+ * @see #removeSelectionListener
+ * @see SelectionEvent
+ */
+public void addSelectionListener(SelectionListener listener) {
+    checkWidget();
+    if (listener is null) error (DWT.ERROR_NULL_ARGUMENT);
+    TypedListener typedListener = new TypedListener(listener);
+    addListener(DWT.Selection,typedListener);
+    addListener(DWT.DefaultSelection,typedListener);
+}
+
+static int checkStyle (int style) {
+    /*
+    * Macintosh only supports smooth dragging.
+    */
+    style |= DWT.SMOOTH;
+    return checkBits (style, DWT.HORIZONTAL, DWT.VERTICAL, 0, 0, 0, 0);
+}
+
+bool becomeFirstResponder () {
+    bool result = super.becomeFirstResponder();
+    NSRect frame = view.frame();
+    lastX = (int)frame.x;
+    lastY = (int)frame.y;
+    return result;
+}
+
+public Point computeSize (int wHint, int hHint, bool changed) {
+    checkWidget();
+    int width = 0, height = 0;
+    if ((style & DWT.HORIZONTAL) !is 0) {
+        width += DEFAULT_WIDTH;  height += 5;
+    } else {
+        width += 5; height += DEFAULT_HEIGHT;
+    }
+    if (wHint !is DWT.DEFAULT) width = wHint;
+    if (hHint !is DWT.DEFAULT) height = hHint;
+    return new Point (width, height);
+}
+
+void createHandle () {
+    SWTView widget = (SWTView)new SWTView().alloc();
+    widget.initWithFrame (new NSRect());
+    widget.setTag(jniRef);
+    view = widget;
+    parent.contentView().addSubview_(view);
+}
+
+bool sendKeyEvent(NSEvent nsEvent, int type) {
+    //TODO consumed
+    int keyCode = nsEvent.keyCode();
+    switch (keyCode) {
+        case 126: /* Up arrow */
+        case 123: /* Left arrow */
+        case 125: /* Down arrow */
+        case 124: /* Right arrow */ {
+            int xChange = 0, yChange = 0;
+            int stepSize = PAGE_INCREMENT;
+            int modifiers = nsEvent.modifierFlags();
+            if ((modifiers & OS.NSControlKeyMask) !is 0) stepSize = INCREMENT;
+            if ((style & DWT.VERTICAL) !is 0) {
+                if (keyCode is 126 || keyCode is 125) break;
+                xChange = keyCode is 123 ? -stepSize : stepSize;
+            } else {
+                if (keyCode is 123 || keyCode  is 124) break;
+                yChange = keyCode is 126 ? -stepSize : stepSize;
+            }
+            
+            Rectangle bounds = getBounds ();
+            int width = bounds.width, height = bounds.height;
+            Rectangle parentBounds = parent.getBounds ();
+            int parentWidth = parentBounds.width;
+            int parentHeight = parentBounds.height;
+            int newX = lastX, newY = lastY;
+            if ((style & DWT.VERTICAL) !is 0) {
+                newX = Math.min (Math.max (0, lastX + xChange), parentWidth - width);
+            } else {
+                newY = Math.min (Math.max (0, lastY + yChange), parentHeight - height);
+            }
+            if (newX is lastX && newY is lastY) return true;
+            Event event = new Event ();
+            event.x = newX;
+            event.y = newY;
+            event.width = width;
+            event.height = height;
+            sendEvent (DWT.Selection, event);
+            if (isDisposed ()) break;
+            if (event.doit) {
+                setBounds (event.x, event.y, width, height);
+                if (isDisposed ()) break;
+                lastX = event.x;
+                lastY = event.y;
+                if (isDisposed ()) return false;
+                int cursorX = event.x, cursorY = event.y;
+                if ((style & DWT.VERTICAL) !is 0) {
+                    cursorY += height / 2;
+                } else {
+                    cursorX += width / 2;
+                }
+                display.setCursorLocation (parent.toDisplay (cursorX, cursorY));
+            }
+            break;
+        }
+    }
+    return true;
+}
+
+void mouseDown(int theEvent) {
+    super.mouseDown(theEvent);
+    NSEvent nsEvent = new NSEvent(theEvent);
+    if (nsEvent.clickCount() !is 1) return;
+    NSPoint location = nsEvent.locationInWindow();
+    NSPoint point = view.convertPoint_fromView_(location, null);
+    startX = (int)point.x;
+    startY = (int)point.y;
+    NSRect frame = view.frame();
+    Event event = new Event ();
+    event.x = (int)frame.x;
+    event.y = (int)frame.y;
+    event.width = (int)frame.width;
+    event.height = (int)frame.height;
+    sendEvent (DWT.Selection, event);
+    if (isDisposed ()) return;
+    if (event.doit) {
+        lastX = event.x;
+        lastY = event.y;
+        dragging = true;
+        setLocation(event.x, event.y);
+    }
+}
+
+void mouseDragged(int theEvent) {
+    super.mouseDragged(theEvent);
+    if (!dragging) return;
+    NSEvent nsEvent = new NSEvent(theEvent);
+    NSPoint location = nsEvent.locationInWindow();
+    NSPoint point = view.convertPoint_fromView_(location, null);
+    NSRect frame = view.frame();
+    NSRect parentFrame = parent.topView().frame();
+    int newX = lastX, newY = lastY;
+    if ((style & DWT.VERTICAL) !is 0) {
+        newX = Math.min (Math.max (0, (int)(point.x + frame.x - startX)), (int)(parentFrame.width - frame.width));
+    } else {
+        newY = Math.min (Math.max (0, (int)(point.y + frame.y - startY)), (int)(parentFrame.height - frame.height));
+    }
+    if (newX is lastX && newY is lastY) return;
+    Event event = new Event ();
+    event.x = newX;
+    event.y = newY;
+    event.width = (int)frame.width;
+    event.height = (int)frame.height;
+    sendEvent (DWT.Selection, event);
+    if (isDisposed ()) return;
+    if (event.doit) {
+        lastX = event.x;
+        lastY = event.y;
+        setBounds (event.x, event.y, (int)frame.width, (int)frame.height);
+    }
+}
+
+void mouseEntered(int theEvent) {
+    //TODO need to add tracking area
+    super.mouseEntered(theEvent);
+    sizeCursor.handle.set();
+}
+
+void mouseUp(int theEvent) {
+    super.mouseUp(theEvent);
+    if (!dragging) return;
+    dragging = false;
+    NSRect frame = view.frame();
+    Event event = new Event ();
+    event.x = lastX;
+    event.y = lastY;
+    event.width = (int)frame.width;
+    event.height = (int)frame.height;
+    sendEvent (DWT.Selection, event);
+    if (isDisposed ()) return;
+    if (event.doit) {
+        setBounds (event.x, event.y, (int)frame.width, (int)frame.height);
+    }
+}
+
+void releaseWidget () {
+    super.releaseWidget ();
+    if (sizeCursor !is null) sizeCursor.dispose ();
+    sizeCursor = null;
+}
+
+/**
+ * Removes the listener from the collection of listeners who will
+ * be notified when the control is selected by the user.
+ *
+ * @param listener the listener which should no longer be notified
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * @exception DWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see SelectionListener
+ * @see #addSelectionListener
+ */
+public void removeSelectionListener(SelectionListener listener) {
+    checkWidget();
+    if (listener is null) error (DWT.ERROR_NULL_ARGUMENT);
+    if (eventTable is null) return;
+    eventTable.unhook(DWT.Selection, listener);
+    eventTable.unhook(DWT.DefaultSelection,listener);
+}
+
+int traversalCode (int key, NSEvent theEvent) {
+    return 0;
+}
+
+}