--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/draw2d/RangeModel.d	Sun Aug 03 00:52:14 2008 +0200
@@ -0,0 +1,114 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2005 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
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+module dwtx.draw2d.RangeModel;
+
+import dwt.dwthelper.utils;
+
+import dwtx.dwtxhelper.Bean;
+
+/**
+ * This interface represents a range of possible values as well as the current values.
+ * There is a minumum and maximum value, a current value, and the extent.  One use for a
+ * RangeModel is a scrollbar.  There is a minimum value (the top of the scrollbar), a
+ * maximum value (the bottom of the scrollbar), a current value (the top of the thumb),
+ * and an extent (the length of the thumb).
+ */
+public interface RangeModel {
+
+/** Value property name */
+static const String PROPERTY_VALUE = "value"; //$NON-NLS-1$
+/** Extent property name */
+static const String PROPERTY_EXTENT = "extent"; //$NON-NLS-1$
+/** Minimum property name */
+static const String PROPERTY_MINIMUM = "minimum"; //$NON-NLS-1$
+/** Maximum property name */
+static const String PROPERTY_MAXIMUM = "maximum"; //$NON-NLS-1$
+
+/**
+ * Registers listener as a PropertyChangeListener of this RangeModel.  Listeners will be
+ * notified of changes to {@link #PROPERTY_VALUE value}, {@link #PROPERTY_EXTENT extent},
+ * {@link #PROPERTY_MINIMUM minimum} and {@link #PROPERTY_MAXIMUM maximum} properties.
+ *
+ * @param listener The listener to add
+ */
+void addPropertyChangeListener(PropertyChangeListener listener);
+
+/**
+ * Returns the extent.
+ * @return The extent
+ */
+int getExtent();
+
+/**
+ * Returns the maximum value in the range.
+ * @return The maximum value
+ */
+int getMaximum();
+
+/**
+ * Returns the minimum value in the range.
+ * @return The minimum value
+ */
+int getMinimum();
+
+/**
+ * Returns the current value.
+ * @return The current value
+ */
+int getValue();
+
+/**
+ * Returns <code>true</code> if this RangeModel is enabled.
+ * @return <code>true</code> if this Rangel Model is enabled
+ */
+bool isEnabled();
+
+/**
+ * Removes the given listener from this RangeModel's list of PropertyChangeListeners.
+ * @param listener The listener to remove
+ */
+void removePropertyChangeListener(PropertyChangeListener listener);
+
+/**
+ * Sets min, extent, and max all at once.
+ * @param min the new mininum
+ * @param extent the new extent
+ * @param max the new maximum
+ */
+void setAll(int min, int extent, int max);
+
+/**
+ * Sets the extent.
+ * @param extent The extent
+ */
+void setExtent(int extent);
+
+/**
+ * Sets the maximum value of the range.
+ * @param max The maximum value
+ */
+void setMaximum(int max);
+
+/**
+ * Sets the minimum value of the range.
+ * @param min The minimum value
+ */
+void setMinimum(int min);
+
+/**
+ * Sets the current value.
+ * @param value The current value
+ */
+void setValue(int value);
+
+}