steps toward simpler widgetset creation. Still needs a lot of cleaning and refining.

svn changeset:8930/svn branch:2009-09-widget-packaging_3332

1 files changed, 505 insertions, 503 deletions

diff --git a/src/com/vaadin/ui/Slider.java b/src/com/vaadin/ui/Slider.java
index ec9fc2c90b..24dd520ddd 100644
--- a/src/com/vaadin/ui/Slider.java
+++ b/src/com/vaadin/ui/Slider.java
@@ -1,503 +1,505 @@
-/* 

-@ITMillApache2LicenseForJavaFiles@

- */

-

-package com.vaadin.ui;

-

-import java.util.Map;

-

-import com.vaadin.terminal.PaintException;

-import com.vaadin.terminal.PaintTarget;

-

-/**

- * A component for selecting a numerical value within a range.

- * 

- * Example code: <code>

- * 	class MyPlayer extends CustomComponent implements ValueChangeListener {

- * 		

- * 		Label volumeIndicator = new Label();

- * 		Slider slider;

- * 		

- * 		public MyPlayer() {

- * 			VerticalLayout vl = new VerticalLayout();

- * 			setCompositionRoot(vl);

- * 			slider = new Slider("Volume", 0, 100);

- * 			slider.setImmediate(true);

- *                      slider.setValue(new Double(50));

- * 			vl.addComponent(slider);

- * 			vl.addComponent(volumeIndicator);

- * 			volumeIndicator.setValue("Current volume:" + 50.0);

- * 			slider.addListener(this);

- * 			

- * 		}

- * 		

- * 		public void setVolume(double d) {

- * 			volumeIndicator.setValue("Current volume: " + d);

- * 		}

- * 

- * 		public void valueChange(ValueChangeEvent event) {

- * 			Double d = (Double) event.getProperty().getValue();

- * 			setVolume(d.doubleValue());

- * 		}

- * 	}

- *

- * </code>

- * 

- * @author IT Mill Ltd.

- */

-@SuppressWarnings("serial")

-public class Slider extends AbstractField {

-

-    public static final int ORIENTATION_HORIZONTAL = 0;

-

-    public static final int ORIENTATION_VERTICAL = 1;

-

-    /**

-     * Style constant representing a scrollbar styled slider. Use this with

-     * {@link #addStyleName(String)}. Default styling usually represents a

-     * common slider found e.g. in Adobe Photoshop. The client side

-     * implementation dictates how different styles will look.

-     */

-    @Deprecated

-    public static final String STYLE_SCROLLBAR = "scrollbar";

-

-    /** Minimum value of slider */

-    private double min = 0;

-

-    /** Maximum value of slider */

-    private double max = 100;

-

-    /**

-     * Resolution, how many digits are considered relevant after desimal point.

-     * Must be a non-negative value

-     */

-    private int resolution = 0;

-

-    /**

-     * Slider orientation (horizontal/vertical), defaults .

-     */

-    private int orientation = ORIENTATION_HORIZONTAL;

-

-    /**

-     * Slider size in pixels. In horizontal mode, if set to -1, allow 100% width

-     * of container. In vertical mode, if set to -1, default height is

-     * determined by the client-side implementation.

-     * 

-     * @deprecated

-     */

-    @Deprecated

-    private int size = -1;

-

-    /**

-     * Handle (draggable control element) size in percents relative to base

-     * size. Must be a value between 1-99. Other values are converted to nearest

-     * bound. A negative value sets the width to auto (client-side

-     * implementation calculates).

-     * 

-     * @deprecated The size is dictated by the current theme.

-     */

-    @Deprecated

-    private int handleSize = -1;

-

-    /**

-     * Show arrows that can be pressed to slide the handle in some increments

-     * (client-side implementation decides the increment, usually somewhere

-     * between 5-10% of slide range).

-     */

-    @Deprecated

-    private final boolean arrows = false;

-

-    /**

-     * Default Slider constructor. Sets all values to defaults and the slide

-     * handle at minimum value.

-     * 

-     */

-    public Slider() {

-        super();

-        super.setValue(new Double(min));

-    }

-

-    /**

-     * Create a new slider with the caption given as parameter. All slider

-     * values set to defaults.

-     * 

-     * @param caption

-     *            The caption for this Slider (e.g. "Volume").

-     */

-    public Slider(String caption) {

-        this();

-        setCaption(caption);

-    }

-

-    /**

-     * Create a new slider with given range and resolution

-     * 

-     * @param min

-     * @param max

-     * @param resolution

-     */

-    public Slider(double min, double max, int resolution) {

-        this();

-        setMin(min);

-        setMax(max);

-        setResolution(resolution);

-    }

-

-    /**

-     * Create a new slider with given range

-     * 

-     * @param min

-     * @param max

-     */

-    public Slider(int min, int max) {

-        this();

-        setMin(min);

-        setMax(max);

-        setResolution(0);

-    }

-

-    /**

-     * Create a new slider with given caption and range

-     * 

-     * @param caption

-     * @param min

-     * @param max

-     */

-    public Slider(String caption, int min, int max) {

-        this(min, max);

-        setCaption(caption);

-    }

-

-    /**

-     * Gets the biggest possible value in Sliders range.

-     * 

-     * @return the biggest value slider can have

-     */

-    public double getMax() {

-        return max;

-    }

-

-    /**

-     * Set the maximum value of the Slider. If the current value of the Slider

-     * is out of new bounds, the value is set to new minimum.

-     * 

-     * @param max

-     *            New maximum value of the Slider.

-     */

-    public void setMax(double max) {

-        this.max = max;

-        try {

-            if ((new Double(getValue().toString())).doubleValue() > max) {

-                super.setValue(new Double(max));

-            }

-        } catch (final ClassCastException e) {

-            // FIXME: Handle exception

-            /*

-             * Where does ClassCastException come from? Can't see any casts

-             * above

-             */

-            super.setValue(new Double(max));

-        }

-        requestRepaint();

-    }

-

-    /**

-     * Gets the minimum value in Sliders range.

-     * 

-     * @return the smalles value slider can have

-     */

-    public double getMin() {

-        return min;

-    }

-

-    /**

-     * Set the minimum value of the Slider. If the current value of the Slider

-     * is out of new bounds, the value is set to new minimum.

-     * 

-     * @param min

-     *            New minimum value of the Slider.

-     */

-    public void setMin(double min) {

-        this.min = min;

-        try {

-            if ((new Double(getValue().toString())).doubleValue() < min) {

-                super.setValue(new Double(min));

-            }

-        } catch (final ClassCastException e) {

-            // FIXME: Handle exception

-            /*

-             * Where does ClassCastException come from? Can't see any casts

-             * above

-             */

-            super.setValue(new Double(min));

-        }

-        requestRepaint();

-    }

-

-    /**

-     * Get the current orientation of the Slider (horizontal or vertical).

-     * 

-     * @return orientation

-     */

-    public int getOrientation() {

-        return orientation;

-    }

-

-    /**

-     * Set the orientation of the Slider.

-     * 

-     * @param int new orientation

-     */

-    public void setOrientation(int orientation) {

-        this.orientation = orientation;

-        requestRepaint();

-    }

-

-    /**

-     * Get the current resolution of the Slider.

-     * 

-     * @return resolution

-     */

-    public int getResolution() {

-        return resolution;

-    }

-

-    /**

-     * Set a new resolution for the Slider.

-     * 

-     * @param resolution

-     */

-    public void setResolution(int resolution) {

-        if (resolution < 0) {

-            return;

-        }

-        this.resolution = resolution;

-        requestRepaint();

-    }

-

-    /**

-     * Set the value of this Slider.

-     * 

-     * @param value

-     *            New value of Slider. Must be within Sliders range (min - max),

-     *            otherwise throws an exception.

-     * @param repaintIsNotNeeded

-     *            If true, client-side is not requested to repaint itself.

-     * @throws ValueOutOfBoundsException

-     */

-    public void setValue(Double value, boolean repaintIsNotNeeded)

-            throws ValueOutOfBoundsException {

-        final double v = value.doubleValue();

-        double newValue;

-        if (resolution > 0) {

-            // Round up to resolution

-            newValue = (int) (v * Math.pow(10, resolution));

-            newValue = newValue / Math.pow(10, resolution);

-            if (min > newValue || max < newValue) {

-                throw new ValueOutOfBoundsException(value);

-            }

-        } else {

-            newValue = (int) v;

-            if (min > newValue || max < newValue) {

-                throw new ValueOutOfBoundsException(value);

-            }

-        }

-        super.setValue(new Double(newValue), repaintIsNotNeeded);

-    }

-

-    /**

-     * Set the value of this Slider.

-     * 

-     * @param value

-     *            New value of Slider. Must be within Sliders range (min - max),

-     *            otherwise throws an exception.

-     * @throws ValueOutOfBoundsException

-     */

-    public void setValue(Double value) throws ValueOutOfBoundsException {

-        setValue(value, false);

-    }

-

-    /**

-     * Set the value of this Slider.

-     * 

-     * @param value

-     *            New value of Slider. Must be within Sliders range (min - max),

-     *            otherwise throws an exception.

-     * @throws ValueOutOfBoundsException

-     */

-    public void setValue(double value) throws ValueOutOfBoundsException {

-        setValue(new Double(value), false);

-    }

-

-    /**

-     * Get the current Slider size.

-     * 

-     * @return size in pixels or -1 for auto sizing.

-     * @deprecated use standard getWidth/getHeight instead

-     */

-    @Deprecated

-    public int getSize() {

-        return size;

-    }

-

-    /**

-     * Set the size for this Slider.

-     * 

-     * @param size

-     *            in pixels, or -1 auto sizing.

-     * @deprecated use standard setWidth/setHeight instead

-     */

-    @Deprecated

-    public void setSize(int size) {

-        this.size = size;

-        switch (orientation) {

-        case ORIENTATION_HORIZONTAL:

-            setWidth(size, UNITS_PIXELS);

-            break;

-        default:

-            setHeight(size, UNITS_PIXELS);

-            break;

-        }

-        requestRepaint();

-    }

-

-    /**

-     * Get the handle size of this Slider.

-     * 

-     * @return handle size in percentages.

-     * @deprecated The size is dictated by the current theme.

-     */

-    @Deprecated

-    public int getHandleSize() {

-        return handleSize;

-    }

-

-    /**

-     * Set the handle size of this Slider.

-     * 

-     * @param handleSize

-     *            in percentages relative to slider base size.

-     * @deprecated The size is dictated by the current theme.

-     */

-    @Deprecated

-    public void setHandleSize(int handleSize) {

-        if (handleSize < 0) {

-            this.handleSize = -1;

-        } else if (handleSize > 99) {

-            this.handleSize = 99;

-        } else if (handleSize < 1) {

-            this.handleSize = 1;

-        } else {

-            this.handleSize = handleSize;

-        }

-        requestRepaint();

-    }

-

-    @Override

-    public String getTag() {

-        return "slider";

-    }

-

-    @Override

-    public void paintContent(PaintTarget target) throws PaintException {

-        super.paintContent(target);

-

-        target.addAttribute("min", min);

-        if (max > min) {

-            target.addAttribute("max", max);

-        } else {

-            target.addAttribute("max", min);

-        }

-        target.addAttribute("resolution", resolution);

-

-        if (resolution > 0) {

-            target.addVariable(this, "value", ((Double) getValue())

-                    .doubleValue());

-        } else {

-            target.addVariable(this, "value", ((Double) getValue()).intValue());

-        }

-

-        if (orientation == ORIENTATION_VERTICAL) {

-            target.addAttribute("vertical", true);

-        }

-

-        if (arrows) {

-            target.addAttribute("arrows", true);

-        }

-

-        if (size > -1) {

-            target.addAttribute("size", size);

-        }

-

-        if (min != max && min < max) {

-            target.addAttribute("hsize", handleSize);

-        } else {

-            target.addAttribute("hsize", 100);

-        }

-

-    }

-

-    /**

-     * Invoked when the value of a variable has changed. Slider listeners are

-     * notified if the slider value has changed.

-     * 

-     * @param source

-     * @param variables

-     */

-    @Override

-    public void changeVariables(Object source, Map variables) {

-        super.changeVariables(source, variables);

-        if (variables.containsKey("value")) {

-            final Object value = variables.get("value");

-            final Double newValue = new Double(value.toString());

-            if (newValue != null && newValue != getValue()

-                    && !newValue.equals(getValue())) {

-                try {

-                    setValue(newValue, true);

-                } catch (final ValueOutOfBoundsException e) {

-                    // Convert to nearest bound

-                    double out = e.getValue().doubleValue();

-                    if (out < min) {

-                        out = min;

-                    }

-                    if (out > max) {

-                        out = max;

-                    }

-                    super.setValue(new Double(out), false);

-                }

-            }

-        }

-    }

-

-    /**

-     * ValueOutOfBoundsException

-     * 

-     * @author IT Mill Ltd.

-     * 

-     */

-    public class ValueOutOfBoundsException extends Exception {

-

-        private final Double value;

-

-        /**

-         * Constructs an <code>ValueOutOfBoundsException</code> with the

-         * specified detail message.

-         * 

-         * @param valueOutOfBounds

-         */

-        public ValueOutOfBoundsException(Double valueOutOfBounds) {

-            value = valueOutOfBounds;

-        }

-

-        public Double getValue() {

-            return value;

-        }

-

-    }

-

-    @Override

-    public Class getType() {

-        return Double.class;

-    }

-

-}

+/* 
+@ITMillApache2LicenseForJavaFiles@
+ */
+
+package com.vaadin.ui;
+
+import java.util.Map;
+
+import com.vaadin.terminal.PaintException;
+import com.vaadin.terminal.PaintTarget;
+import com.vaadin.terminal.gwt.client.ui.VSlider;
+
+/**
+ * A component for selecting a numerical value within a range.
+ * 
+ * Example code: <code>
+ * 	class MyPlayer extends CustomComponent implements ValueChangeListener {
+ * 		
+ * 		Label volumeIndicator = new Label();
+ * 		Slider slider;
+ * 		
+ * 		public MyPlayer() {
+ * 			VerticalLayout vl = new VerticalLayout();
+ * 			setCompositionRoot(vl);
+ * 			slider = new Slider("Volume", 0, 100);
+ * 			slider.setImmediate(true);
+ *                      slider.setValue(new Double(50));
+ * 			vl.addComponent(slider);
+ * 			vl.addComponent(volumeIndicator);
+ * 			volumeIndicator.setValue("Current volume:" + 50.0);
+ * 			slider.addListener(this);
+ * 			
+ * 		}
+ * 		
+ * 		public void setVolume(double d) {
+ * 			volumeIndicator.setValue("Current volume: " + d);
+ * 		}
+ * 
+ * 		public void valueChange(ValueChangeEvent event) {
+ * 			Double d = (Double) event.getProperty().getValue();
+ * 			setVolume(d.doubleValue());
+ * 		}
+ * 	}
+ *
+ * </code>
+ * 
+ * @author IT Mill Ltd.
+ */
+@SuppressWarnings("serial")
+@ClientWidget(VSlider.class)
+public class Slider extends AbstractField {
+
+    public static final int ORIENTATION_HORIZONTAL = 0;
+
+    public static final int ORIENTATION_VERTICAL = 1;
+
+    /**
+     * Style constant representing a scrollbar styled slider. Use this with
+     * {@link #addStyleName(String)}. Default styling usually represents a
+     * common slider found e.g. in Adobe Photoshop. The client side
+     * implementation dictates how different styles will look.
+     */
+    @Deprecated
+    public static final String STYLE_SCROLLBAR = "scrollbar";
+
+    /** Minimum value of slider */
+    private double min = 0;
+
+    /** Maximum value of slider */
+    private double max = 100;
+
+    /**
+     * Resolution, how many digits are considered relevant after desimal point.
+     * Must be a non-negative value
+     */
+    private int resolution = 0;
+
+    /**
+     * Slider orientation (horizontal/vertical), defaults .
+     */
+    private int orientation = ORIENTATION_HORIZONTAL;
+
+    /**
+     * Slider size in pixels. In horizontal mode, if set to -1, allow 100% width
+     * of container. In vertical mode, if set to -1, default height is
+     * determined by the client-side implementation.
+     * 
+     * @deprecated
+     */
+    @Deprecated
+    private int size = -1;
+
+    /**
+     * Handle (draggable control element) size in percents relative to base
+     * size. Must be a value between 1-99. Other values are converted to nearest
+     * bound. A negative value sets the width to auto (client-side
+     * implementation calculates).
+     * 
+     * @deprecated The size is dictated by the current theme.
+     */
+    @Deprecated
+    private int handleSize = -1;
+
+    /**
+     * Show arrows that can be pressed to slide the handle in some increments
+     * (client-side implementation decides the increment, usually somewhere
+     * between 5-10% of slide range).
+     */
+    @Deprecated
+    private final boolean arrows = false;
+
+    /**
+     * Default Slider constructor. Sets all values to defaults and the slide
+     * handle at minimum value.
+     * 
+     */
+    public Slider() {
+        super();
+        super.setValue(new Double(min));
+    }
+
+    /**
+     * Create a new slider with the caption given as parameter. All slider
+     * values set to defaults.
+     * 
+     * @param caption
+     *            The caption for this Slider (e.g. "Volume").
+     */
+    public Slider(String caption) {
+        this();
+        setCaption(caption);
+    }
+
+    /**
+     * Create a new slider with given range and resolution
+     * 
+     * @param min
+     * @param max
+     * @param resolution
+     */
+    public Slider(double min, double max, int resolution) {
+        this();
+        setMin(min);
+        setMax(max);
+        setResolution(resolution);
+    }
+
+    /**
+     * Create a new slider with given range
+     * 
+     * @param min
+     * @param max
+     */
+    public Slider(int min, int max) {
+        this();
+        setMin(min);
+        setMax(max);
+        setResolution(0);
+    }
+
+    /**
+     * Create a new slider with given caption and range
+     * 
+     * @param caption
+     * @param min
+     * @param max
+     */
+    public Slider(String caption, int min, int max) {
+        this(min, max);
+        setCaption(caption);
+    }
+
+    /**
+     * Gets the biggest possible value in Sliders range.
+     * 
+     * @return the biggest value slider can have
+     */
+    public double getMax() {
+        return max;
+    }
+
+    /**
+     * Set the maximum value of the Slider. If the current value of the Slider
+     * is out of new bounds, the value is set to new minimum.
+     * 
+     * @param max
+     *            New maximum value of the Slider.
+     */
+    public void setMax(double max) {
+        this.max = max;
+        try {
+            if ((new Double(getValue().toString())).doubleValue() > max) {
+                super.setValue(new Double(max));
+            }
+        } catch (final ClassCastException e) {
+            // FIXME: Handle exception
+            /*
+             * Where does ClassCastException come from? Can't see any casts
+             * above
+             */
+            super.setValue(new Double(max));
+        }
+        requestRepaint();
+    }
+
+    /**
+     * Gets the minimum value in Sliders range.
+     * 
+     * @return the smalles value slider can have
+     */
+    public double getMin() {
+        return min;
+    }
+
+    /**
+     * Set the minimum value of the Slider. If the current value of the Slider
+     * is out of new bounds, the value is set to new minimum.
+     * 
+     * @param min
+     *            New minimum value of the Slider.
+     */
+    public void setMin(double min) {
+        this.min = min;
+        try {
+            if ((new Double(getValue().toString())).doubleValue() < min) {
+                super.setValue(new Double(min));
+            }
+        } catch (final ClassCastException e) {
+            // FIXME: Handle exception
+            /*
+             * Where does ClassCastException come from? Can't see any casts
+             * above
+             */
+            super.setValue(new Double(min));
+        }
+        requestRepaint();
+    }
+
+    /**
+     * Get the current orientation of the Slider (horizontal or vertical).
+     * 
+     * @return orientation
+     */
+    public int getOrientation() {
+        return orientation;
+    }
+
+    /**
+     * Set the orientation of the Slider.
+     * 
+     * @param int new orientation
+     */
+    public void setOrientation(int orientation) {
+        this.orientation = orientation;
+        requestRepaint();
+    }
+
+    /**
+     * Get the current resolution of the Slider.
+     * 
+     * @return resolution
+     */
+    public int getResolution() {
+        return resolution;
+    }
+
+    /**
+     * Set a new resolution for the Slider.
+     * 
+     * @param resolution
+     */
+    public void setResolution(int resolution) {
+        if (resolution < 0) {
+            return;
+        }
+        this.resolution = resolution;
+        requestRepaint();
+    }
+
+    /**
+     * Set the value of this Slider.
+     * 
+     * @param value
+     *            New value of Slider. Must be within Sliders range (min - max),
+     *            otherwise throws an exception.
+     * @param repaintIsNotNeeded
+     *            If true, client-side is not requested to repaint itself.
+     * @throws ValueOutOfBoundsException
+     */
+    public void setValue(Double value, boolean repaintIsNotNeeded)
+            throws ValueOutOfBoundsException {
+        final double v = value.doubleValue();
+        double newValue;
+        if (resolution > 0) {
+            // Round up to resolution
+            newValue = (int) (v * Math.pow(10, resolution));
+            newValue = newValue / Math.pow(10, resolution);
+            if (min > newValue || max < newValue) {
+                throw new ValueOutOfBoundsException(value);
+            }
+        } else {
+            newValue = (int) v;
+            if (min > newValue || max < newValue) {
+                throw new ValueOutOfBoundsException(value);
+            }
+        }
+        super.setValue(new Double(newValue), repaintIsNotNeeded);
+    }
+
+    /**
+     * Set the value of this Slider.
+     * 
+     * @param value
+     *            New value of Slider. Must be within Sliders range (min - max),
+     *            otherwise throws an exception.
+     * @throws ValueOutOfBoundsException
+     */
+    public void setValue(Double value) throws ValueOutOfBoundsException {
+        setValue(value, false);
+    }
+
+    /**
+     * Set the value of this Slider.
+     * 
+     * @param value
+     *            New value of Slider. Must be within Sliders range (min - max),
+     *            otherwise throws an exception.
+     * @throws ValueOutOfBoundsException
+     */
+    public void setValue(double value) throws ValueOutOfBoundsException {
+        setValue(new Double(value), false);
+    }
+
+    /**
+     * Get the current Slider size.
+     * 
+     * @return size in pixels or -1 for auto sizing.
+     * @deprecated use standard getWidth/getHeight instead
+     */
+    @Deprecated
+    public int getSize() {
+        return size;
+    }
+
+    /**
+     * Set the size for this Slider.
+     * 
+     * @param size
+     *            in pixels, or -1 auto sizing.
+     * @deprecated use standard setWidth/setHeight instead
+     */
+    @Deprecated
+    public void setSize(int size) {
+        this.size = size;
+        switch (orientation) {
+        case ORIENTATION_HORIZONTAL:
+            setWidth(size, UNITS_PIXELS);
+            break;
+        default:
+            setHeight(size, UNITS_PIXELS);
+            break;
+        }
+        requestRepaint();
+    }
+
+    /**
+     * Get the handle size of this Slider.
+     * 
+     * @return handle size in percentages.
+     * @deprecated The size is dictated by the current theme.
+     */
+    @Deprecated
+    public int getHandleSize() {
+        return handleSize;
+    }
+
+    /**
+     * Set the handle size of this Slider.
+     * 
+     * @param handleSize
+     *            in percentages relative to slider base size.
+     * @deprecated The size is dictated by the current theme.
+     */
+    @Deprecated
+    public void setHandleSize(int handleSize) {
+        if (handleSize < 0) {
+            this.handleSize = -1;
+        } else if (handleSize > 99) {
+            this.handleSize = 99;
+        } else if (handleSize < 1) {
+            this.handleSize = 1;
+        } else {
+            this.handleSize = handleSize;
+        }
+        requestRepaint();
+    }
+
+    @Override
+    public String getTag() {
+        return "slider";
+    }
+
+    @Override
+    public void paintContent(PaintTarget target) throws PaintException {
+        super.paintContent(target);
+
+        target.addAttribute("min", min);
+        if (max > min) {
+            target.addAttribute("max", max);
+        } else {
+            target.addAttribute("max", min);
+        }
+        target.addAttribute("resolution", resolution);
+
+        if (resolution > 0) {
+            target.addVariable(this, "value", ((Double) getValue())
+                    .doubleValue());
+        } else {
+            target.addVariable(this, "value", ((Double) getValue()).intValue());
+        }
+
+        if (orientation == ORIENTATION_VERTICAL) {
+            target.addAttribute("vertical", true);
+        }
+
+        if (arrows) {
+            target.addAttribute("arrows", true);
+        }
+
+        if (size > -1) {
+            target.addAttribute("size", size);
+        }
+
+        if (min != max && min < max) {
+            target.addAttribute("hsize", handleSize);
+        } else {
+            target.addAttribute("hsize", 100);
+        }
+
+    }
+
+    /**
+     * Invoked when the value of a variable has changed. Slider listeners are
+     * notified if the slider value has changed.
+     * 
+     * @param source
+     * @param variables
+     */
+    @Override
+    public void changeVariables(Object source, Map variables) {
+        super.changeVariables(source, variables);
+        if (variables.containsKey("value")) {
+            final Object value = variables.get("value");
+            final Double newValue = new Double(value.toString());
+            if (newValue != null && newValue != getValue()
+                    && !newValue.equals(getValue())) {
+                try {
+                    setValue(newValue, true);
+                } catch (final ValueOutOfBoundsException e) {
+                    // Convert to nearest bound
+                    double out = e.getValue().doubleValue();
+                    if (out < min) {
+                        out = min;
+                    }
+                    if (out > max) {
+                        out = max;
+                    }
+                    super.setValue(new Double(out), false);
+                }
+            }
+        }
+    }
+
+    /**
+     * ValueOutOfBoundsException
+     * 
+     * @author IT Mill Ltd.
+     * 
+     */
+    public class ValueOutOfBoundsException extends Exception {
+
+        private final Double value;
+
+        /**
+         * Constructs an <code>ValueOutOfBoundsException</code> with the
+         * specified detail message.
+         * 
+         * @param valueOutOfBounds
+         */
+        public ValueOutOfBoundsException(Double valueOutOfBounds) {
+            value = valueOutOfBounds;
+        }
+
+        public Double getValue() {
+            return value;
+        }
+
+    }
+
+    @Override
+    public Class getType() {
+        return Double.class;
+    }
+
+}