--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwt/widgets/ToolBar.d	Sat Aug 09 17:00:02 2008 +0200
@@ -0,0 +1,444 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2006 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.ToolBar;
+
+import dwt.dwthelper.utils;
+
+ 
+import dwt.DWT;
+import dwt.DWTException;
+import dwt.graphics.Point;
+import dwt.graphics.Rectangle;
+import dwt.internal.cocoa.NSRect;
+import dwt.internal.cocoa.NSView;
+import dwt.internal.cocoa.SWTView;
+
+/**
+ * Instances of this class support the layout of selectable
+ * tool bar items.
+ * <p>
+ * The item children that may be added to instances of this class
+ * must be of type <code>ToolItem</code>.
+ * </p><p>
+ * Note that although this class is a subclass of <code>Composite</code>,
+ * it does not make sense to add <code>Control</code> children to it,
+ * or set a layout on it.
+ * </p><p>
+ * <dl>
+ * <dt><b>Styles:</b></dt>
+ * <dd>FLAT, WRAP, RIGHT, HORIZONTAL, VERTICAL, SHADOW_OUT</dd>
+ * <dt><b>Events:</b></dt>
+ * <dd>(none)</dd>
+ * </dl>
+ * <p>
+ * Note: Only one of the styles HORIZONTAL and VERTICAL may be specified.
+ * </p><p>
+ * IMPORTANT: This class is <em>not</em> intended to be subclassed.
+ * </p>
+ */
+public class ToolBar extends Composite {
+    int itemCount;
+    ToolItem [] items;
+
+/**
+ * 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#FLAT
+ * @see DWT#WRAP
+ * @see DWT#RIGHT
+ * @see DWT#HORIZONTAL
+ * @see DWT#SHADOW_OUT
+ * @see DWT#VERTICAL
+ * @see Widget#checkSubclass()
+ * @see Widget#getStyle()
+ */
+public ToolBar (Composite parent, int style) {
+    super (parent, checkStyle (style));
+    
+    /*
+    * Ensure that either of HORIZONTAL or VERTICAL is set.
+    * NOTE: HORIZONTAL and VERTICAL have the same values
+    * as H_SCROLL and V_SCROLL so it is necessary to first
+    * clear these bits to avoid scroll bars and then reset
+    * the bits using the original style supplied by the
+    * programmer.
+    */
+    if ((style & DWT.VERTICAL) !is 0) {
+        this.style |= DWT.VERTICAL;
+    } else {
+        this.style |= DWT.HORIZONTAL;
+    }
+}
+
+static int checkStyle (int style) {
+    /*
+    * Even though it is legal to create this widget
+    * with scroll bars, they serve no useful purpose
+    * because they do not automatically scroll the
+    * widget's client area.  The fix is to clear
+    * the DWT style.
+    */
+    return style & ~(DWT.H_SCROLL | DWT.V_SCROLL);
+}
+
+protected void checkSubclass () {
+    if (!isValidSubclass ()) error (DWT.ERROR_INVALID_SUBCLASS);
+}
+
+public Point computeSize (int wHint, int hHint, bool changed) {
+    checkWidget();
+    int width = wHint, height = hHint;
+    if (wHint is DWT.DEFAULT) width = 0x7FFFFFFF;
+    if (hHint is DWT.DEFAULT) height = 0x7FFFFFFF;
+    int [] result = layout (width, height, false);
+    Point extent = new Point (result [1], result [2]);
+    if (wHint !is DWT.DEFAULT) extent.x = wHint;
+    if (hHint !is DWT.DEFAULT) extent.y = hHint;
+    return extent;
+}
+
+void createHandle () {
+    SWTView widget = (SWTView)new SWTView().alloc();
+    widget.initWithFrame(new NSRect());
+//  widget.setDrawsBackground(false);
+    widget.setTag(jniRef);
+    view = widget;
+    parent.contentView().addSubview_(widget);
+}
+
+void createItem (ToolItem item, int index) {
+    if (!(0 <= index && index <= itemCount)) error (DWT.ERROR_INVALID_RANGE);
+    if (itemCount is items.length) {
+        ToolItem [] newItems = new ToolItem [itemCount + 4];
+        System.arraycopy (items, 0, newItems, 0, items.length);
+        items = newItems;
+    }
+    item.createWidget();
+    view.addSubview_(item.view);
+    System.arraycopy (items, index, items, index + 1, itemCount++ - index);
+    items [index] = item;
+    relayout ();
+}
+
+void createWidget () {
+    super.createWidget ();
+    items = new ToolItem [4];
+    itemCount = 0;
+}
+
+void destroyItem (ToolItem item) {
+    int index = 0;
+    while (index < itemCount) {
+        if (items [index] is item) break;
+        index++;
+    }
+    if (index is itemCount) return;
+    System.arraycopy (items, index + 1, items, index, --itemCount - index);
+    items [itemCount] = null;
+    NSView nsItem = item.view;
+    nsItem.removeFromSuperview();
+    item.view = null;
+    relayout ();
+}
+
+void enableWidget(bool enabled) {
+    super.enableWidget(enabled);
+    for (int i = 0; i < itemCount; i++) {
+        ToolItem item = items[i];
+        if (item !is null) {
+            item.enableWidget(enabled);
+        }
+    }
+}
+
+public Rectangle getClientArea () {
+    checkWidget();
+    NSRect rect = view.bounds();
+    return new Rectangle((int)rect.x, (int)rect.y, (int)rect.width, (int)rect.height);
+}
+
+/**
+ * Returns the item at the given, zero-relative index in the
+ * receiver. Throws an exception if the index is out of range.
+ *
+ * @param index the index of the item to return
+ * @return the item at the given index
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</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>
+ */
+public ToolItem getItem (int index) {
+    checkWidget();
+    if (0 <= index && index < itemCount) return items [index];
+    error (DWT.ERROR_INVALID_RANGE);
+    return null;
+}
+
+/**
+ * Returns the item at the given point in the receiver
+ * or null if no such item exists. The point is in the
+ * coordinate system of the receiver.
+ *
+ * @param point the point used to locate the item
+ * @return the item at the given point
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the point 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>
+ */
+public ToolItem getItem (Point pt) {
+    checkWidget();
+    if (pt is null) error (DWT.ERROR_NULL_ARGUMENT);
+    for (int i=0; i<itemCount; i++) {
+        Rectangle rect = items [i].getBounds ();
+        if (rect.contains (pt)) return items [i];
+    }
+    return null;
+}
+
+/**
+ * Returns the number of items contained in the receiver.
+ *
+ * @return the number of items
+ *
+ * @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>
+ */
+public int getItemCount () {
+    checkWidget();
+    return itemCount;
+}
+
+/**
+ * Returns an array of <code>ToolItem</code>s which are the items
+ * in the receiver. 
+ * <p>
+ * Note: This is not the actual structure used by the receiver
+ * to maintain its list of items, so modifying the array will
+ * not affect the receiver. 
+ * </p>
+ *
+ * @return the items in the receiver
+ *
+ * @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>
+ */
+public ToolItem [] getItems () {
+    checkWidget();
+    ToolItem [] result = new ToolItem [itemCount];
+    System.arraycopy (items, 0, result, 0, itemCount);
+    return result;
+}
+
+/**
+ * Returns the number of rows in the receiver. When
+ * the receiver has the <code>WRAP</code> style, the
+ * number of rows can be greater than one.  Otherwise,
+ * the number of rows is always one.
+ *
+ * @return the number of items
+ *
+ * @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>
+ */
+public int getRowCount () {
+    checkWidget();
+    Rectangle rect = getClientArea ();
+    return layout (rect.width, rect.height, false) [0];
+}
+
+/**
+ * Searches the receiver's list starting at the first item
+ * (index 0) until an item is found that is equal to the 
+ * argument, and returns the index of that item. If no item
+ * is found, returns -1.
+ *
+ * @param item the search item
+ * @return the index of the item
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the tool item is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the tool item has been disposed</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>
+ */
+public int indexOf (ToolItem item) {
+    checkWidget();
+    if (item is null) error (DWT.ERROR_NULL_ARGUMENT);
+    if (item.isDisposed()) error(DWT.ERROR_INVALID_ARGUMENT);
+    for (int i=0; i<itemCount; i++) {
+        if (items [i] is item) return i;
+    }
+    return -1;
+}
+
+int [] layoutHorizontal (int width, int height, bool resize) {
+    int xSpacing = 0, ySpacing = 2;
+    int marginWidth = 0, marginHeight = 0;
+    int x = marginWidth, y = marginHeight;
+    int maxX = 0, rows = 1;
+    bool wrap = (style & DWT.WRAP) !is 0;
+    int itemHeight = 0;
+    Point [] sizes = new Point [itemCount];
+    for (int i=0; i<itemCount; i++) {
+        Point size = sizes [i] = items [i].computeSize ();
+        itemHeight = Math.max (itemHeight, size.y);
+    }
+    for (int i=0; i<itemCount; i++) {
+        ToolItem item = items [i];
+        Point size = sizes [i];
+        if (wrap && i !is 0 && x + size.x > width) {
+            rows++;
+            x = marginWidth;
+            y += ySpacing + itemHeight;
+        }
+        if (resize) {
+            item.setBounds (x, y, size.x, itemHeight);
+            bool visible = x + size.x <= width && y + itemHeight <= height;
+            item.setVisible (visible);
+            Control control = item.control;
+            if (control !is null) {
+                int controlY = y + (itemHeight - size.y) / 2;
+                control.setBounds (x, controlY, size.x, itemHeight - (controlY - y));
+            }
+        }
+        x += xSpacing + size.x;
+        maxX = Math.max (maxX, x);
+    }
+    
+    return new int [] {rows, maxX, y + itemHeight};
+}
+
+int [] layoutVertical (int width, int height, bool resize) {
+    int xSpacing = 2, ySpacing = 0;
+    int marginWidth = 0, marginHeight = 0;
+    int x = marginWidth, y = marginHeight;
+    int maxY = 0, cols = 1;
+    bool wrap = (style & DWT.WRAP) !is 0;
+    int itemWidth = 0;
+    Point [] sizes = new Point [itemCount];
+    for (int i=0; i<itemCount; i++) {
+        Point size = sizes [i] = items [i].computeSize ();
+        itemWidth = Math.max (itemWidth, size.x);
+    }
+    for (int i=0; i<itemCount; i++) {
+        ToolItem item = items [i];
+        Point size = sizes [i];
+        if (wrap && i !is 0 && y + size.y > height) {
+            cols++;
+            x += xSpacing + itemWidth;
+            y = marginHeight;
+        }
+        if (resize) {
+            item.setBounds (x, y, itemWidth, size.y);
+            bool visible = x + itemWidth <= width && y + size.y <= height;
+            item.setVisible (visible);
+            Control control = item.control;
+            if (control !is null) {
+                int controlX = x + (itemWidth - size.x) / 2;
+                control.setBounds (controlX, y, itemWidth - (controlX - x), size.y);
+            }
+        }
+        y += ySpacing + size.y;
+        maxY = Math.max (maxY, y);
+    }
+    
+    return new int [] {cols, x + itemWidth, maxY};
+}
+
+int [] layout (int nWidth, int nHeight, bool resize) {
+    if ((style & DWT.VERTICAL) !is 0) {
+        return layoutVertical (nWidth, nHeight, resize);
+    } else {
+        return layoutHorizontal (nWidth, nHeight, resize);
+    }
+}
+
+void relayout () {
+    if (drawCount !is 0) return;
+    Rectangle rect = getClientArea ();
+    layout (rect.width, rect.height, true);
+}
+
+void releaseChildren (bool destroy) {
+    if (items !is null) {
+        for (int i=0; i<itemCount; i++) {
+            ToolItem item = items [i];
+            if (item !is null && !item.isDisposed ()) {
+                item.release (false);
+            }
+        }
+        itemCount = 0;
+        items = null;
+    }
+    super.releaseChildren (destroy);
+}
+
+void removeControl (Control control) {
+    super.removeControl (control);
+    for (int i=0; i<itemCount; i++) {
+        ToolItem item = items [i];
+        if (item.control is control) item.setControl (null);
+    }
+}
+
+int setBounds (int x, int y, int width, int height, bool move, bool resize) {
+    int result = super.setBounds (x, y, width, height, move, resize);
+    if ((result & RESIZED) !is 0) relayout ();
+    return result;
+}
+
+public void setRedraw (bool redraw) {
+    checkWidget();
+    super.setRedraw (redraw);
+    if (redraw && drawCount is 0) relayout();
+}
+
+}