Layout API changes (#1041) to server-side. Client-side implementation still not done.

svn changeset:2659/svn branch:trunk

18 files changed, 853 insertions, 419 deletions

diff --git a/src/com/itmill/toolkit/demo/reservation/GoogleMap.java b/src/com/itmill/toolkit/demo/reservation/GoogleMap.java
index cae3529e0f..4d421c3f66 100644
--- a/src/com/itmill/toolkit/demo/reservation/GoogleMap.java
+++ b/src/com/itmill/toolkit/demo/reservation/GoogleMap.java
@@ -216,4 +216,14 @@ public class GoogleMap extends AbstractComponent implements Sizeable,
 	public void clear() {

 		setContainerDataSource(null);

 	}

+

+	public void setSizeFull() {

+		// TODO Auto-generated method stub

+		

+	}

+

+	public void setSizeUndefined() {

+		// TODO Auto-generated method stub

+		

+	}

 }
\ No newline at end of file
diff --git a/src/com/itmill/toolkit/terminal/Sizeable.java b/src/com/itmill/toolkit/terminal/Sizeable.java
index b75cfaddd4..230440aa50 100644
--- a/src/com/itmill/toolkit/terminal/Sizeable.java
+++ b/src/com/itmill/toolkit/terminal/Sizeable.java
@@ -4,7 +4,7 @@
 
  Development of Browser User Interfaces Made Easy
 
- Copyright (C) 2000-2006 IT Mill Ltd
+ Copyright (C) 2000-2007 IT Mill Ltd
  
  *************************************************************************
 
@@ -177,5 +177,15 @@ public interface Sizeable {
 	 *            the units used in height property.
 	 */
 	public void setHeightUnits(int units);
+	
+	/**
+	 * Sets the size to 100% x 100%.
+	 */
+	public void setSizeFull();
+	
+	/**
+	 * Clears any size settings.
+	 */
+	public void setSizeUndefined();
 
 }
diff --git a/src/com/itmill/toolkit/terminal/gwt/client/ui/IGridLayout.java b/src/com/itmill/toolkit/terminal/gwt/client/ui/IGridLayout.java
index 69645e047d..31b906fff2 100644
--- a/src/com/itmill/toolkit/terminal/gwt/client/ui/IGridLayout.java
+++ b/src/com/itmill/toolkit/terminal/gwt/client/ui/IGridLayout.java
@@ -39,8 +39,8 @@ public class IGridLayout extends FlexTable implements Paintable, Container {
 					if ("gc".equals(c.getTag())) {
 						column++;
 						int w;
-						if (c.hasAttribute("w")) {
-							w = c.getIntAttribute("w");
+						if (c.hasAttribute("cols")) {
+							w = c.getIntAttribute("cols");
 						} else
 							w = 1;
 						((FlexCellFormatter) getCellFormatter()).setColSpan(
diff --git a/src/com/itmill/toolkit/tests/TestForBasicApplicationLayout.java b/src/com/itmill/toolkit/tests/TestForBasicApplicationLayout.java
index 7bfe7628ba..f7a058cbd2 100644
--- a/src/com/itmill/toolkit/tests/TestForBasicApplicationLayout.java
+++ b/src/com/itmill/toolkit/tests/TestForBasicApplicationLayout.java
@@ -50,7 +50,6 @@ public class TestForBasicApplicationLayout extends CustomComponent {
 		Panel p = new Panel("Accordion Panel");

 		p.setHeight(100);

 		p.setHeightUnits(Panel.UNITS_PERCENTAGE);

-		p.addStyleName(Panel.STYLE_NO_PADDING);

 

 		tab = new TabSheet();

 		tab.setWidth(100);

@@ -70,7 +69,7 @@ public class TestForBasicApplicationLayout extends CustomComponent {
 		cal.setLocale(new Locale("en", "US"));

 		report.addComponent(cal);

 		((ExpandLayout) report.getLayout()).expand(controls);

-		report.setStyle("light");

+		report.addStyleName(Panel.STYLE_LIGHT);

 		report.setHeight(100);

 		report.setHeightUnits(Sizeable.UNITS_PERCENTAGE);

 

diff --git a/src/com/itmill/toolkit/tests/TestForWindowing.java b/src/com/itmill/toolkit/tests/TestForWindowing.java
index 1c20c81c87..eeb2ca861c 100644
--- a/src/com/itmill/toolkit/tests/TestForWindowing.java
+++ b/src/com/itmill/toolkit/tests/TestForWindowing.java
@@ -9,6 +9,7 @@ import com.itmill.toolkit.ui.Label;
 import com.itmill.toolkit.ui.OptionGroup;
 import com.itmill.toolkit.ui.OrderedLayout;
 import com.itmill.toolkit.ui.Select;
+import com.itmill.toolkit.ui.Slider;
 import com.itmill.toolkit.ui.Window;
 import com.itmill.toolkit.ui.Button.ClickEvent;
 import com.itmill.toolkit.ui.Button.ClickListener;
@@ -57,6 +58,17 @@ public class TestForWindowing extends CustomComponent {
 				w.addComponent(s1);
 				w.addComponent(TestForWindowing.this.s2);
 
+				Slider s = new Slider();
+				s.setCaption("Volume");
+				s.setMax(13);
+				s.setMin(12);
+				s.setResolution(2);
+				s.setImmediate(true);
+				//s.setOrientation(Slider.ORIENTATION_VERTICAL);
+				//s.setArrows(false);
+				
+				w.addComponent(s);
+				
 				getApplication().getMainWindow().addWindow(w);
 
 			}
diff --git a/src/com/itmill/toolkit/tests/featurebrowser/FeatureBrowser.java b/src/com/itmill/toolkit/tests/featurebrowser/FeatureBrowser.java
index bb0632f1c2..3247c6bd01 100644
--- a/src/com/itmill/toolkit/tests/featurebrowser/FeatureBrowser.java
+++ b/src/com/itmill/toolkit/tests/featurebrowser/FeatureBrowser.java
@@ -279,4 +279,65 @@ public class FeatureBrowser extends CustomComponent implements
 		// TODO Auto-generated method stub
 
 	}
+
+	public void setMargin(boolean enabled) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	public void setMargin(boolean top, boolean right, boolean bottom,
+			boolean left) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	public int getHeight() {
+		// TODO Auto-generated method stub
+		return 0;
+	}
+
+	public int getHeightUnits() {
+		// TODO Auto-generated method stub
+		return 0;
+	}
+
+	public int getWidth() {
+		// TODO Auto-generated method stub
+		return 0;
+	}
+
+	public int getWidthUnits() {
+		// TODO Auto-generated method stub
+		return 0;
+	}
+
+	public void setHeight(int height) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	public void setHeightUnits(int units) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	public void setSizeFull() {
+		// TODO Auto-generated method stub
+		
+	}
+
+	public void setSizeUndefined() {
+		// TODO Auto-generated method stub
+		
+	}
+
+	public void setWidth(int width) {
+		// TODO Auto-generated method stub
+		
+	}
+
+	public void setWidthUnits(int units) {
+		// TODO Auto-generated method stub
+		
+	}
 }
diff --git a/src/com/itmill/toolkit/tests/featurebrowser/PropertyPanel.java b/src/com/itmill/toolkit/tests/featurebrowser/PropertyPanel.java
index 779dd35a88..a46653a044 100644
--- a/src/com/itmill/toolkit/tests/featurebrowser/PropertyPanel.java
+++ b/src/com/itmill/toolkit/tests/featurebrowser/PropertyPanel.java
@@ -71,7 +71,6 @@ public class PropertyPanel extends Panel implements Button.ClickListener,
 		// Layout
 		setCaption("Properties");
 		addComponent(formsLayout);
-		addStyleName(Panel.STYLE_NO_PADDING);
 
 		setWidth(100);
 		setWidthUnits(Table.UNITS_PERCENTAGE);
diff --git a/src/com/itmill/toolkit/ui/AbstractComponent.java b/src/com/itmill/toolkit/ui/AbstractComponent.java
index 68ceec5b0c..b0b8181e14 100644
--- a/src/com/itmill/toolkit/ui/AbstractComponent.java
+++ b/src/com/itmill/toolkit/ui/AbstractComponent.java
@@ -28,11 +28,7 @@
 
 package com.itmill.toolkit.ui;
 
-import com.itmill.toolkit.Application;
-import com.itmill.toolkit.event.EventRouter;
-import com.itmill.toolkit.event.MethodEventSource;
-import com.itmill.toolkit.terminal.*;
-
+import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Iterator;
@@ -40,8 +36,15 @@ import java.util.LinkedList;
 import java.util.Locale;
 import java.util.Map;
 import java.util.Set;
-import java.util.HashSet;
-import java.lang.reflect.Method;
+
+import com.itmill.toolkit.Application;
+import com.itmill.toolkit.event.EventRouter;
+import com.itmill.toolkit.event.MethodEventSource;
+import com.itmill.toolkit.terminal.ErrorMessage;
+import com.itmill.toolkit.terminal.PaintException;
+import com.itmill.toolkit.terminal.PaintTarget;
+import com.itmill.toolkit.terminal.Resource;
+import com.itmill.toolkit.terminal.VariableOwner;
 
 /**
  * An abstract class that defines default implementation for the
diff --git a/src/com/itmill/toolkit/ui/AbstractLayout.java b/src/com/itmill/toolkit/ui/AbstractLayout.java
new file mode 100644
index 0000000000..88ea27174c
--- /dev/null
+++ b/src/com/itmill/toolkit/ui/AbstractLayout.java
@@ -0,0 +1,204 @@
+package com.itmill.toolkit.ui;
+
+import com.itmill.toolkit.terminal.PaintException;
+import com.itmill.toolkit.terminal.PaintTarget;
+
+/**
+ * An abstract class that defines default implementation for the {@link Layout}
+ * interface.
+ * 
+ * @author IT Mill Ltd.
+ * @version
+ * @VERSION@
+ * @since 5.0
+ */
+public abstract class AbstractLayout extends AbstractComponentContainer
+		implements Layout {
+
+	/**
+	 * Layout edge margins, clockwise from top: top, right, bottom, left. Each
+	 * is set to true, if the client-side implementation should leave extra
+	 * space at that edge.
+	 */
+	private boolean[] margins;
+
+	/**
+	 * Height of the layout. Set to -1 for undefined height.
+	 */
+	private int height = -1;
+
+	/**
+	 * Height unit.
+	 * 
+	 * @see com.itmill.toolkit.terminal.Sizeable.UNIT_SYMBOLS;
+	 */
+	private int heightUnit = UNITS_PIXELS;
+
+	/**
+	 * Width of the layout. Set to -1 for undefined width.
+	 */
+	private int width = -1;
+
+	/**
+	 * Width unit.
+	 * 
+	 * @see com.itmill.toolkit.terminal.Sizeable.UNIT_SYMBOLS;
+	 */
+	private int widthUnit = UNITS_PIXELS;
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see com.itmill.toolkit.ui.AbstractComponent#getTag()
+	 */
+	public abstract String getTag();
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see com.itmill.toolkit.ui.Layout#setMargin(boolean)
+	 */
+	public void setMargin(boolean enabled) {
+		margins = new boolean[] { enabled, enabled, enabled, enabled };
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see com.itmill.toolkit.ui.Layout#setMargin(boolean, boolean, boolean,
+	 *      boolean)
+	 */
+	public void setMargin(boolean topEnabled, boolean rightEnabled,
+			boolean bottomEnabled, boolean leftEnabled) {
+		margins = new boolean[] { topEnabled, rightEnabled, bottomEnabled,
+				leftEnabled };
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see com.itmill.toolkit.terminal.Sizeable#getHeight()
+	 */
+	public int getHeight() {
+		return height;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see com.itmill.toolkit.terminal.Sizeable#getHeightUnits()
+	 */
+	public int getHeightUnits() {
+		return heightUnit;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see com.itmill.toolkit.terminal.Sizeable#getWidth()
+	 */
+	public int getWidth() {
+		return width;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see com.itmill.toolkit.terminal.Sizeable#getWidthUnits()
+	 */
+	public int getWidthUnits() {
+		return widthUnit;
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see com.itmill.toolkit.terminal.Sizeable#setHeight(int)
+	 */
+	public void setHeight(int height) {
+		this.height = height;
+		requestRepaint();
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see com.itmill.toolkit.terminal.Sizeable#setHeightUnits(int)
+	 */
+	public void setHeightUnits(int units) {
+		this.heightUnit = units;
+		requestRepaint();
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see com.itmill.toolkit.terminal.Sizeable#setSizeFull()
+	 */
+	public void setSizeFull() {
+		height = 100;
+		width = 100;
+		heightUnit = UNITS_PERCENTAGE;
+		widthUnit = UNITS_PERCENTAGE;
+		requestRepaint();
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see com.itmill.toolkit.terminal.Sizeable#setSizeUndefined()
+	 */
+	public void setSizeUndefined() {
+		height = -1;
+		width = -1;
+		heightUnit = UNITS_PIXELS;
+		widthUnit = UNITS_PIXELS;
+		requestRepaint();
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see com.itmill.toolkit.terminal.Sizeable#setWidth(int)
+	 */
+	public void setWidth(int width) {
+		this.width = width;
+		requestRepaint();
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see com.itmill.toolkit.terminal.Sizeable#setWidthUnits(int)
+	 */
+	public void setWidthUnits(int units) {
+		this.widthUnit = units;
+		requestRepaint();
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see com.itmill.toolkit.ui.AbstractComponent#paintContent(com.itmill.toolkit.terminal.PaintTarget)
+	 */
+	public void paintContent(PaintTarget target) throws PaintException {
+		super.paintContent(target);
+
+		// Add margin info. Defaults to false.
+		if (margins == null)
+			setMargin(false);
+		target.addAttribute("marginTop", margins[0]);
+		target.addAttribute("marginRight", margins[1]);
+		target.addAttribute("marginBottom", margins[2]);
+		target.addAttribute("marginLeft", margins[3]);
+
+		// Add size info
+		if (getHeight() > -1)
+			target.addAttribute("height", getHeight()
+					+ UNIT_SYMBOLS[getHeightUnits()]);
+		if (getWidth() > -1)
+			target.addAttribute("height", getWidth()
+					+ UNIT_SYMBOLS[getWidthUnits()]);
+	}
+
+}
diff --git a/src/com/itmill/toolkit/ui/CustomLayout.java b/src/com/itmill/toolkit/ui/CustomLayout.java
index 79b5d89c5b..55930cce7e 100644
--- a/src/com/itmill/toolkit/ui/CustomLayout.java
+++ b/src/com/itmill/toolkit/ui/CustomLayout.java
@@ -61,7 +61,7 @@ import java.util.HashMap;
  * @VERSION@
  * @since 3.0
  */
-public class CustomLayout extends AbstractComponentContainer implements Layout {
+public class CustomLayout extends AbstractLayout {
 
 	/**
 	 * Custom layout slots containing the components.
@@ -173,6 +173,7 @@ public class CustomLayout extends AbstractComponentContainer implements Layout {
 	 *             if the paint operation failed.
 	 */
 	public void paintContent(PaintTarget target) throws PaintException {
+		super.paintContent(target);
 
 		target.addAttribute("template", templateName);
 		// Adds all items in all the locations
diff --git a/src/com/itmill/toolkit/ui/Embedded.java b/src/com/itmill/toolkit/ui/Embedded.java
index a3c7629e77..9a51edf8c7 100644
--- a/src/com/itmill/toolkit/ui/Embedded.java
+++ b/src/com/itmill/toolkit/ui/Embedded.java
@@ -528,4 +528,26 @@ public class Embedded extends AbstractComponent implements Sizeable {
 		}
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * @see com.itmill.toolkit.terminal.Sizeable#setSizeFull()
+	 */
+	public void setSizeFull() {
+		setWidth(100);
+		setHeight(100);
+		setWidthUnits(UNITS_PERCENTAGE);
+		setHeightUnits(UNITS_PERCENTAGE);
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see com.itmill.toolkit.terminal.Sizeable#setSizeUndefined()
+	 */
+	public void setSizeUndefined() {
+		setWidth(-1);
+		setHeight(-1);
+		setWidthUnits(UNITS_PIXELS);
+		setHeightUnits(UNITS_PIXELS);
+	}
+
 }
diff --git a/src/com/itmill/toolkit/ui/GridLayout.java b/src/com/itmill/toolkit/ui/GridLayout.java
index f0b957a11a..e85f5e333f 100644
--- a/src/com/itmill/toolkit/ui/GridLayout.java
+++ b/src/com/itmill/toolkit/ui/GridLayout.java
@@ -4,7 +4,7 @@
 
  Development of Browser User Interfaces Made Easy
 
- Copyright (C) 2000-2006 IT Mill Ltd
+ Copyright (C) 2000-2007 IT Mill Ltd
  
  *************************************************************************
 
@@ -29,26 +29,28 @@
 package com.itmill.toolkit.ui;
 
 import java.util.Collections;
-import java.util.Iterator;
 import java.util.HashMap;
+import java.util.Iterator;
 import java.util.LinkedList;
+import java.util.Map;
 
 import com.itmill.toolkit.terminal.PaintException;
 import com.itmill.toolkit.terminal.PaintTarget;
+import com.itmill.toolkit.terminal.Sizeable;
 
 /**
  * <p>
- * A container that consists of components with certain coordinates on a grid.
- * It also maintains cursor for adding component in left to right, top to bottom
- * order.
+ * A container that consists of components with certain coordinates (cell
+ * position) on a grid. It also maintains cursor for adding component in left to
+ * right, top to bottom order.
  * </p>
  * 
  * <p>
  * Each component in a <code>GridLayout</code> uses a certain
- * {@link GridLayout.Area area} (x1,y1,x2,y2) from the grid. One should not add
- * components that would overlap with the existing components because in such
- * case an {@link OverlapsException} is thrown. Adding component with cursor
- * automatically extends the grid by increasing the grid height.
+ * {@link GridLayout.Area area} (column1,row1,column2,row2) from the grid. One
+ * should not add components that would overlap with the existing components
+ * because in such case an {@link OverlapsException} is thrown. Adding component
+ * with cursor automatically extends the grid by increasing the grid height.
  * </p>
  * 
  * @author IT Mill Ltd.
@@ -56,17 +58,17 @@ import com.itmill.toolkit.terminal.PaintTarget;
  * @VERSION@
  * @since 3.0
  */
-public class GridLayout extends AbstractComponentContainer implements Layout {
+public class GridLayout extends AbstractLayout {
 
 	/**
-	 * Initial grid x size.
+	 * Initial grid columns.
 	 */
-	private int width = 0;
+	private int cols = 0;
 
 	/**
-	 * Initial grid y size.
+	 * Initial grid rows.
 	 */
-	private int height = 0;
+	private int rows = 0;
 
 	/**
 	 * Cursor X position: this is where the next component with unspecified x,y
@@ -87,23 +89,63 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 	private LinkedList areas = new LinkedList();
 
 	/**
-	 * Mapping from components to threir respective areas.
+	 * Mapping from components to their respective areas.
 	 */
 	private LinkedList components = new LinkedList();
 
 	/**
-	 * Constructor for grid of given size. Note that grid's final size depends
-	 * on the items that are added into the grid. Grid grows if you add
-	 * components outside the grid's area.
+	 * Mapping from components to alignments (horizontal + vertical).
+	 */
+	private Map componentToAlignment = new HashMap();
+
+	/**
+	 * Contained component should be aligned horizontally to the left.
+	 */
+	private int ALIGNMENT_LEFT = 1;
+
+	/**
+	 * Contained component should be aligned horizontally to the right.
+	 */
+	private int ALIGNMENT_RIGHT = 2;
+
+	/**
+	 * Contained component should be aligned vertically to the top.
+	 */
+	private int ALIGNMENT_TOP = 4;
+
+	/**
+	 * Contained component should be aligned vertically to the bottom.
+	 */
+	private int ALIGNMENT_BOTTOM = 8;
+
+	/**
+	 * Contained component should be horizontally aligned to center.
+	 */
+	private int HORIZONTAL_ALIGNMENT_CENTER = 16;
+	
+	/**
+	 * Contained component should be vertically aligned to center.
+	 */
+	private int VERTICAL_ALIGNMENT_CENTER = 32;
+	
+	/**
+	 * Is spacing between contained components enabled. Defaults to false.
+	 */
+	private boolean spacing = false;
+
+	/**
+	 * Constructor for grid of given size (number of cells). Note that grid's
+	 * final size depends on the items that are added into the grid. Grid grows
+	 * if you add components outside the grid's area.
 	 * 
-	 * @param width
-	 *            the Width of the grid.
-	 * @param height
-	 *            the Height of the grid.
-	 */
-	public GridLayout(int width, int height) {
-		setWidth(width);
-		setHeight(height);
+	 * @param columns
+	 *            Number of columns in the grid.
+	 * @param rows
+	 *            Number of rows in the grid.
+	 */
+	public GridLayout(int columns, int rows) {
+		setColumns(columns);
+		setRows(rows);
 	}
 
 	/**
@@ -116,8 +158,8 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 	/**
 	 * <p>
 	 * Adds a component with a specified area to the grid. The area the new
-	 * component should take is defined by specifying the upper left corner (x1,
-	 * y1) and the lower right corner (x2, y2) of the area.
+	 * component should take is defined by specifying the upper left corner
+	 * (column1, row1) and the lower right corner (column2, row2) of the area.
 	 * </p>
 	 * 
 	 * <p>
@@ -128,26 +170,27 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 	 * 
 	 * @param c
 	 *            the component to be added.
-	 * @param x1
-	 *            the X-coordinate of the upper left corner of the area
-	 *            <code>c</code> is supposed to occupy.
-	 * @param y1
-	 *            the Y-coordinate of the upper left corner of the area
-	 *            <code>c</code> is supposed to occupy.
-	 * @param x2
-	 *            the X-coordinate of the lower right corner of the area
-	 *            <code>c</code> is supposed to occupy.
-	 * @param y2
-	 *            the Y-coordinate of the lower right corner of the area
+	 * @param column1
+	 *            the column of the upper left corner of the area <code>c</code>
+	 *            is supposed to occupy.
+	 * @param row1
+	 *            the row of the upper left corner of the area <code>c</code>
+	 *            is supposed to occupy.
+	 * @param column2
+	 *            the column of the lower right corner of the area
 	 *            <code>c</code> is supposed to occupy.
+	 * @param row2
+	 *            the row of the lower right corner of the area <code>c</code>
+	 *            is supposed to occupy.
 	 * @throws OverlapsException
 	 *             if the new component overlaps with any of the components
 	 *             already in the grid.
 	 * @throws OutOfBoundsException
-	 *             if the coordinates are outside of the grid area.
+	 *             if the cells are outside of the grid area.
 	 */
-	public void addComponent(Component component, int x1, int y1, int x2, int y2)
-			throws OverlapsException, OutOfBoundsException {
+	public void addComponent(Component component, int column1, int row1,
+			int column2, int row2) throws OverlapsException,
+			OutOfBoundsException {
 
 		if (component == null)
 			throw new NullPointerException("Component must not be null");
@@ -158,13 +201,13 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 					"Component is already in the container");
 
 		// Creates the area
-		Area area = new Area(component, x1, y1, x2, y2);
+		Area area = new Area(component, column1, row1, column2, row2);
 
 		// Checks the validity of the coordinates
-		if (x2 < x1 || y2 < y2)
+		if (column2 < column1 || row2 < row1)
 			throw new IllegalArgumentException(
 					"Illegal coordinates for the component");
-		if (x1 < 0 || y1 < 0 || x2 >= width || y2 >= height)
+		if (column1 < 0 || row1 < 0 || column2 >= cols || row2 >= rows)
 			throw new OutOfBoundsException(area);
 
 		// Checks that newItem does not overlap with existing items
@@ -178,8 +221,8 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 		boolean done = false;
 		while (!done && i.hasNext()) {
 			Area existingArea = (Area) i.next();
-			if ((existingArea.y1 >= y1 && existingArea.x1 > x1)
-					|| existingArea.y1 > y1) {
+			if ((existingArea.row1 >= row1 && existingArea.column1 > column1)
+					|| existingArea.row1 > row1) {
 				areas.add(index, area);
 				components.add(index, component);
 				done = true;
@@ -215,19 +258,19 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 	}
 
 	/**
-	 * Adds the component into this container to coordinates x1,y1 (NortWest
+	 * Adds the component into this container to cells column1,row1 (NortWest
 	 * corner of the area.) End coordinates (SouthEast corner of the area) are
-	 * the same as x1,y1. Component width and height is 1.
+	 * the same as column1,row1. Component width and height is 1.
 	 * 
 	 * @param c
 	 *            the component to be added.
-	 * @param x
-	 *            the X-coordinate.
-	 * @param y
-	 *            the Y-coordinate.
+	 * @param column
+	 *            the column index.
+	 * @param row
+	 *            the row index.
 	 */
-	public void addComponent(Component c, int x, int y) {
-		this.addComponent(c, x, y, x, y);
+	public void addComponent(Component c, int column, int row) {
+		this.addComponent(c, column, row, column, row);
 	}
 
 	/**
@@ -250,7 +293,7 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 	 */
 	public void space() {
 		cursorX++;
-		if (cursorX >= width) {
+		if (cursorX >= cols) {
 			cursorX = 0;
 			cursorY++;
 		}
@@ -260,7 +303,7 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 	 * Adds the component into this container to the cursor position. If the
 	 * cursor position is already occupied, the cursor is moved forwards to find
 	 * free position. If the cursor goes out from the bottom of the grid, the
-	 * grid is automaticly extended.
+	 * grid is automatically extended.
 	 * 
 	 * @param c
 	 *            the component to be added.
@@ -280,8 +323,8 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 			}
 
 		// Extends the grid if needed
-		width = cursorX >= width ? cursorX + 1 : width;
-		height = cursorY >= height ? cursorY + 1 : height;
+		cols = cursorX >= cols ? cursorX + 1 : cols;
+		rows = cursorY >= rows ? cursorY + 1 : rows;
 
 		addComponent(component, cursorX, cursorY);
 	}
@@ -310,25 +353,26 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 		components.remove(component);
 		if (area != null)
 			areas.remove(area);
+		
+		componentToAlignment.remove(component);
 
 		requestRepaint();
 	}
 
 	/**
-	 * Removes the component specified with it's top-left corner coordinates
-	 * from this grid.
+	 * Removes the component specified with it's cell index.
 	 * 
-	 * @param x
-	 *            the Component's top-left corner's X-coordinate.
-	 * @param y
-	 *            the Component's top-left corner's Y-coordinate.
+	 * @param column
+	 *            the Component's column.
+	 * @param row
+	 *            the Component's row.
 	 */
-	public void removeComponent(int x, int y) {
+	public void removeComponent(int column, int row) {
 
 		// Finds the area
 		for (Iterator i = areas.iterator(); i.hasNext();) {
 			Area area = (Area) i.next();
-			if (area.getX1() == x && area.getY1() == y) {
+			if (area.getColumn1() == column && area.getRow1() == row) {
 				removeComponent(area.getComponent());
 				return;
 			}
@@ -355,8 +399,14 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 	 */
 	public void paintContent(PaintTarget target) throws PaintException {
 
-		target.addAttribute("h", height);
-		target.addAttribute("w", width);
+		super.paintContent(target);
+
+		// TODO refactor attribute names in future release.
+		target.addAttribute("rows", rows);
+		target.addAttribute("cols", cols);
+		
+		if (this.spacing)
+			target.addAttribute("spacing", this.spacing);
 
 		// Area iterator
 		Iterator areaiterator = areas.iterator();
@@ -371,14 +421,15 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 		int emptyCells = 0;
 
 		// Iterates every applicable row
-		for (int cury = 0; cury < height; cury++) {
+		for (int cury = 0; cury < rows; cury++) {
 			target.startTag("gr");
 
 			// Iterates every applicable column
-			for (int curx = 0; curx < width; curx++) {
+			for (int curx = 0; curx < cols; curx++) {
 
 				// Checks if current item is located at curx,cury
-				if (area != null && (area.y1 == cury) && (area.x1 == curx)) {
+				if (area != null && (area.row1 == cury)
+						&& (area.column1 == curx)) {
 
 					// First check if empty cell needs to be rendered
 					if (emptyCells > 0) {
@@ -393,8 +444,8 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 					}
 
 					// Now proceed rendering current item
-					int cols = (area.x2 - area.x1) + 1;
-					int rows = (area.y2 - area.y1) + 1;
+					int cols = (area.column2 - area.column1) + 1;
+					int rows = (area.row2 - area.row1) + 1;
 					target.startTag("gc");
 
 					target.addAttribute("x", curx);
@@ -480,7 +531,7 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 			// Checks if empty cell needs to be rendered
 			if (emptyCells > 0) {
 				target.startTag("gc");
-				target.addAttribute("x", width - emptyCells);
+				target.addAttribute("x", cols - emptyCells);
 				target.addAttribute("y", cury);
 				if (emptyCells > 1) {
 					target.addAttribute("w", emptyCells);
@@ -507,9 +558,9 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 	}
 
 	/**
-	 * This class defines an area on a grid. An Area is defined by the
-	 * coordinates of its upper left corner (x1,y1) and lower right corner
-	 * (x2,y2).
+	 * This class defines an area on a grid. An Area is defined by the cells of
+	 * its upper left corner (column1,row1) and lower right corner
+	 * (column2,row2).
 	 * 
 	 * @author IT Mill Ltd.
 	 * @version
@@ -519,24 +570,24 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 	public class Area {
 
 		/**
-		 * X-coordinate of the upper left corner of the area.
+		 * The column of the upper left corner cell of the area.
 		 */
-		private int x1;
+		private int column1;
 
 		/**
-		 * Y-coordinate of the upper left corner of the area.
+		 * The row of the upper left corner cell of the area.
 		 */
-		private int y1;
+		private int row1;
 
 		/**
-		 * X-coordinate of the lower right corner of the area.
+		 * The column of the lower right corner cell of the area.
 		 */
-		private int x2;
+		private int column2;
 
 		/**
-		 * Y-coordinate of the lower right corner of the area.
+		 * The row of the lower right corner cell of the area.
 		 */
-		private int y2;
+		private int row2;
 
 		/**
 		 * Component painted on the area.
@@ -550,27 +601,28 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 		 * 
 		 * @param component
 		 *            the component connected to the area.
-		 * @param x1
-		 *            the X-coordinate of the upper left corner of the area
+		 * @param column1
+		 *            The column of the upper left corner cell of the area
 		 *            <code>c</code> is supposed to occupy.
-		 * @param y1
-		 *            the Y-coordinate of the upper left corner of the area
+		 * @param row1
+		 *            The row of the upper left corner cell of the area
 		 *            <code>c</code> is supposed to occupy.
-		 * @param x2
-		 *            the X-coordinate of the lower right corner of the area
+		 * @param column2
+		 *            The column of the lower right corner cell of the area
 		 *            <code>c</code> is supposed to occupy.
-		 * @param y2
-		 *            the Y-coordinate of the lower right corner of the area
+		 * @param row2
+		 *            The row of the lower right corner cell of the area
 		 *            <code>c</code> is supposed to occupy.
 		 * @throws OverlapsException
 		 *             if the new component overlaps with any of the components
 		 *             already in the grid
 		 */
-		public Area(Component component, int x1, int y1, int x2, int y2) {
-			this.x1 = x1;
-			this.y1 = y1;
-			this.x2 = x2;
-			this.y2 = y2;
+		public Area(Component component, int column1, int row1, int column2,
+				int row2) {
+			this.column1 = column1;
+			this.row1 = row1;
+			this.column2 = column2;
+			this.row2 = row2;
 			this.component = component;
 		}
 
@@ -584,8 +636,8 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 		 *         this area, <code>false</code> if it doesn't.
 		 */
 		public boolean overlaps(Area other) {
-			return x1 <= other.getX2() && y1 <= other.getY2()
-					&& x2 >= other.getX1() && y2 >= other.getY1();
+			return column1 <= other.getColumn2() && row1 <= other.getRow2()
+					&& column2 >= other.getColumn1() && row2 >= other.getRow1();
 
 		}
 
@@ -614,39 +666,75 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 		}
 
 		/**
-		 * Gets the top-left corner x-coordinate.
+		 * @deprecated Use getColumn1() instead.
 		 * 
-		 * @return the top-left corner of x-coordinate.
+		 * @see com.itmill.toolkit.ui.GridLayout#getColumn1()
 		 */
 		public int getX1() {
-			return x1;
+			return getColumn1();
+		}
+
+		/**
+		 * Gets the column of the top-left corner cell.
+		 * 
+		 * @return the column of the top-left corner cell.
+		 */
+		public int getColumn1() {
+			return column1;
 		}
 
 		/**
-		 * Gets the bottom-right corner x-coordinate.
+		 * @deprecated Use getColumn2() instead.
 		 * 
-		 * @return the x-coordinate.
+		 * @see com.itmill.toolkit.ui.GridLayout#getColumn2()
 		 */
 		public int getX2() {
-			return x2;
+			return getColumn2();
 		}
 
 		/**
-		 * Gets the top-left corner y-coordinate.
+		 * Gets the column of the bottom-right corner cell.
 		 * 
-		 * @return the y-coordinate.
+		 * @return the column of the bottom-right corner cell.
+		 */
+		public int getColumn2() {
+			return column2;
+		}
+
+		/**
+		 * @deprecated Use getRow1() instead.
+		 * 
+		 * @see com.itmill.toolkit.ui.GridLayout#getRow1()
 		 */
 		public int getY1() {
-			return y1;
+			return getRow1();
 		}
 
 		/**
-		 * Returns the bottom-right corner y-coordinate.
+		 * Gets the row of the top-left corner cell.
 		 * 
-		 * @return the y-coordinate.
+		 * @return the row of the top-left corner cell.
+		 */
+		public int getRow1() {
+			return row1;
+		}
+
+		/**
+		 * @deprecated Use getRow2() instead.
+		 * 
+		 * @see com.itmill.toolkit.ui.GridLayout#getRow2()
 		 */
 		public int getY2() {
-			return y2;
+			return getRow2();
+		}
+
+		/**
+		 * Gets the row of the bottom-right corner cell.
+		 * 
+		 * @return the row of the bottom-right corner cell.
+		 */
+		public int getRow2() {
+			return row2;
 		}
 
 	}
@@ -727,92 +815,148 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 	}
 
 	/**
-	 * Sets the width of the grid. The width can not be reduced if there are any
-	 * areas that would be outside of the shrunk grid.
-	 * 
-	 * @param width
-	 *            the New width of the grid.
+	 * Sets the width of the layout.
+	 * <p>
+	 * <strong>NOTE:</strong> The behaviour of this methdod has changed in
+	 * version 5.0. Now this method won't set the number of columns in the grid
+	 * like it used to (use {@link #setColumns()} for that). Instead, it sets
+	 * the actual visual width of the layout in pixels or in another unit
+	 * specified in {@link Sizeable}.UNIT_SYMBOLS.
+	 * </p>
 	 */
 	public void setWidth(int width) {
+		super.setWidth(width);
+	}
+
+	/**
+	 * Gets the width of the layout.
+	 * <p>
+	 * <strong>NOTE:</strong> The behaviour of this methdod has changed in
+	 * version 5.0. Now this method won't return the number of columns in the
+	 * grid like it used to (use {@link #getColumns()} for that). Instead, it
+	 * returns the actual visual width of the layout in pixels or in another
+	 * unit specified in {@link Sizeable}.UNIT_SYMBOLS.
+	 * </p>
+	 */
+	public int getWidth() {
+		return super.getWidth();
+	}
+
+	/**
+	 * Sets the number of columns in the grid. The column count can not be
+	 * reduced if there are any areas that would be outside of the shrunk grid.
+	 * 
+	 * @param columns
+	 *            the new number of columns in the grid.
+	 */
+	public void setColumns(int columns) {
 
 		// The the param
-		if (width < 1)
+		if (columns < 1)
 			throw new IllegalArgumentException(
-					"The grid width and height must be at least 1");
+					"The number of columns and rows in the grid must be at least 1");
 
 		// In case of no change
-		if (this.width == width)
+		if (this.cols == columns)
 			return;
 
 		// Checks for overlaps
-		if (this.width > width)
+		if (this.cols > columns)
 			for (Iterator i = areas.iterator(); i.hasNext();) {
 				Area area = (Area) i.next();
-				if (area.x2 >= width)
+				if (area.column2 >= columns)
 					throw new OutOfBoundsException(area);
 			}
 
-		this.width = width;
+		this.cols = columns;
 
 		requestRepaint();
 	}
 
 	/**
-	 * Get the width of the grids.
+	 * Get the number of columns in the grid.
 	 * 
-	 * @return the width of the grid.
+	 * @return the number of columns in the grid.
 	 */
-	public final int getWidth() {
-		return this.width;
+	public final int getColumns() {
+		return this.cols;
 	}
 
 	/**
-	 * Sets the height of the grid. The width can not be reduced if there are
-	 * any areas that would be outside of the shrunk grid.
-	 * 
-	 * @param height
-	 *            the height of the grid.
+	 * Set the height of the layout.
+	 * <p>
+	 * <strong>NOTE:</strong> The behaviour of this methdod has changed in
+	 * version 5.0. Now this method won't set the number of rows in the grid
+	 * like it used to (use {@link #setRows()} for that). Instead, it sets the
+	 * actual visual height of the layout in pixels or in another unit specified
+	 * in {@link Sizeable}.UNIT_SYMBOLS.
+	 * </p>
 	 */
 	public void setHeight(int height) {
+		super.setHeight(height);
+	}
+
+	/**
+	 * Gets the height of the layout.
+	 * <p>
+	 * <strong>NOTE:</strong> The behaviour of this methdod has changed in
+	 * version 5.0. Now this method won't return the number of rows in the grid
+	 * like it used to (use {@link #getRows()} for that). Instead, it returns
+	 * the actual visual height of the layout in pixels or in another unit
+	 * specified in {@link Sizeable}.UNIT_SYMBOLS.
+	 * </p>
+	 */
+	public int getHeight() {
+		return super.getHeight();
+	}
+
+	/**
+	 * Sets the number of rows in the grid. The number of rows can not be
+	 * reduced if there are any areas that would be outside of the shrunk grid.
+	 * 
+	 * @param rows
+	 *            the new number of rows in the grid.
+	 */
+	public void setRows(int rows) {
 
 		// The the param
-		if (height < 1)
+		if (rows < 1)
 			throw new IllegalArgumentException(
-					"The grid width and height must be at least 1");
+					"The number of columns and rows in the grid must be at least 1");
 
 		// In case of no change
-		if (this.height == height)
+		if (this.rows == rows)
 			return;
 
 		// Checks for overlaps
-		if (this.height > height)
+		if (this.rows > rows)
 			for (Iterator i = areas.iterator(); i.hasNext();) {
 				Area area = (Area) i.next();
-				if (area.y2 >= height)
+				if (area.row2 >= rows)
 					throw new OutOfBoundsException(area);
 			}
 
-		this.height = height;
+		this.rows = rows;
 
 		requestRepaint();
 	}
 
 	/**
-	 * Gets the height of the grid.
+	 * Get the number of rows in the grid.
 	 * 
-	 * @return int - how many cells high the grid is.
+	 * @return the number of rows in the grid.
 	 */
-	public final int getHeight() {
-		return this.height;
+	public final int getRows() {
+		return this.rows;
 	}
 
 	/**
 	 * Gets the current cursor x-position. The cursor position points the
 	 * position for the next component that is added without specifying its
-	 * coordinates. When the cursor position is occupied, the next component
-	 * will be added to first free position after the cursor.
+	 * coordinates (grid cell). When the cursor position is occupied, the next
+	 * component will be added to first free position after the cursor.
 	 * 
-	 * @return the Cursor x-coordinate.
+	 * @return the grid column the Cursor is on.
 	 */
 	public int getCursorX() {
 		return cursorX;
@@ -821,10 +965,10 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 	/**
 	 * Gets the current cursor y-position. The cursor position points the
 	 * position for the next component that is added without specifying its
-	 * coordinates. When the cursor position is occupied, the next component
-	 * will be added to first free position after the cursor.
+	 * coordinates (grid cell). When the cursor position is occupied, the next
+	 * component will be added to first free position after the cursor.
 	 * 
-	 * @return the Cursor y-coordinate.
+	 * @return the grid row the Cursor is on.
 	 */
 	public int getCursorY() {
 		return cursorY;
@@ -849,9 +993,8 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 			addComponent(newComponent);
 		else if (newLocation == null) {
 			removeComponent(oldComponent);
-			addComponent(newComponent, oldLocation.getX1(),
-					oldLocation.getY1(), oldLocation.getX2(), oldLocation
-							.getY2());
+			addComponent(newComponent, oldLocation.getColumn1(), oldLocation
+					.getRow1(), oldLocation.getColumn2(), oldLocation.getRow2());
 		} else {
 			oldLocation.setComponent(newComponent);
 			newLocation.setComponent(oldComponent);
@@ -866,8 +1009,43 @@ public class GridLayout extends AbstractComponentContainer implements Layout {
 	 */
 	public void removeAllComponents() {
 		super.removeAllComponents();
+		this.componentToAlignment = new HashMap();
 		this.cursorX = 0;
 		this.cursorY = 0;
 	}
 
+	/**
+	 * Set alignment for one contained component in this layout.
+	 * 
+	 * @param childComponent
+	 *            the component to align within it's layout cell.
+	 * @param horizontalAlignment
+	 *            the horizontal alignment for the child component (left,
+	 *            center, right).
+	 * @param verticalAlignment
+	 *            the vertical alignment for the child component (top, center,
+	 *            bottom).
+	 */
+	public void setComponentAlignment(Component childComponent,
+			int horizontalAlignment, int verticalAlignment) {
+		componentToAlignment.put(childComponent, new Integer(
+				horizontalAlignment + verticalAlignment));
+	}
+
+	/**
+	 * Enable spacing between child components within this layout.
+	 * 
+	 * <p>
+	 * <strong>NOTE:</strong> This will only affect spaces between components,
+	 * not also all around spacing of the layout (i.e. do not mix this with HTML
+	 * Table elements cellspacing-attribute). Use {@link #setMargin(boolean)} to
+	 * add extra space around the layout.
+	 * </p>
+	 * 
+	 * @param enabled
+	 */
+	public void setSpacing(boolean enabled) {
+		this.spacing = enabled;
+	}
+
 }
diff --git a/src/com/itmill/toolkit/ui/Layout.java b/src/com/itmill/toolkit/ui/Layout.java
index 810fac86d2..53c4ed791d 100644
--- a/src/com/itmill/toolkit/ui/Layout.java
+++ b/src/com/itmill/toolkit/ui/Layout.java
@@ -28,6 +28,9 @@
 
 package com.itmill.toolkit.ui;
 
+import com.itmill.toolkit.terminal.Sizeable;
+
+
 /**
  * Extension to the {@link ComponentContainer} interface which adds the
  * layouting control to the elements in the container. This is required by the
@@ -39,6 +42,30 @@ package com.itmill.toolkit.ui;
  * @VERSION@
  * @since 3.0
  */
-public interface Layout extends ComponentContainer {
+public interface Layout extends ComponentContainer, Sizeable {
+
+	/**
+	 * Enable layout margins. Affects all four sides of the layout. This will
+	 * tell the client-side implementation to leave extra space around the
+	 * layout. The client-side implementation decides the actual amount, and it
+	 * can vary between themes.
+	 * 
+	 * @param enabled
+	 */
+	public void setMargin(boolean enabled);
+
+	/**
+	 * Enable specific layout margins. This will tell the client-side
+	 * implementation to leave extra space around the layout in specified edges,
+	 * clockwise from top (top, right, bottom, left). The client-side
+	 * implementation decides the actual amount, and it can vary between themes.
+	 * 
+	 * @param top
+	 * @param right
+	 * @param bottom
+	 * @param left
+	 */
+	public void setMargin(boolean top, boolean right, boolean bottom,
+			boolean left);
 
 }
diff --git a/src/com/itmill/toolkit/ui/OrderedLayout.java b/src/com/itmill/toolkit/ui/OrderedLayout.java
index d253a005d4..70a1ef2468 100644
--- a/src/com/itmill/toolkit/ui/OrderedLayout.java
+++ b/src/com/itmill/toolkit/ui/OrderedLayout.java
@@ -28,11 +28,13 @@
 
 package com.itmill.toolkit.ui;
 
-import com.itmill.toolkit.terminal.PaintException;
-import com.itmill.toolkit.terminal.PaintTarget;
-
+import java.util.HashMap;
 import java.util.Iterator;
 import java.util.LinkedList;
+import java.util.Map;
+
+import com.itmill.toolkit.terminal.PaintException;
+import com.itmill.toolkit.terminal.PaintTarget;
 
 /**
  * Ordered layout.
@@ -45,17 +47,17 @@ import java.util.LinkedList;
  * @VERSION@
  * @since 3.0
  */
-public class OrderedLayout extends AbstractComponentContainer implements Layout {
+public class OrderedLayout extends AbstractLayout {
 
 	/* Predefined orientations ***************************************** */
 
 	/**
-	 * Components are to be layed out vertically.
+	 * Components are to be laid out vertically.
 	 */
 	public static int ORIENTATION_VERTICAL = 0;
 
 	/**
-	 * Components are to be layed out horizontally.
+	 * Components are to be laid out horizontally.
 	 */
 	public static int ORIENTATION_HORIZONTAL = 1;
 
@@ -65,11 +67,51 @@ public class OrderedLayout extends AbstractComponentContainer implements Layout
 	private LinkedList components = new LinkedList();
 
 	/**
+	 * Mapping from components to alignments (horizontal + vertical).
+	 */
+	private Map componentToAlignment = new HashMap();
+
+	/**
+	 * Contained component should be aligned horizontally to the left.
+	 */
+	private int ALIGNMENT_LEFT = 1;
+
+	/**
+	 * Contained component should be aligned horizontally to the right.
+	 */
+	private int ALIGNMENT_RIGHT = 2;
+
+	/**
+	 * Contained component should be aligned vertically to the top.
+	 */
+	private int ALIGNMENT_TOP = 4;
+
+	/**
+	 * Contained component should be aligned vertically to the bottom.
+	 */
+	private int ALIGNMENT_BOTTOM = 8;
+
+	/**
+	 * Contained component should be horizontally aligned to center.
+	 */
+	private int HORIZONTAL_ALIGNMENT_CENTER = 16;
+	
+	/**
+	 * Contained component should be vertically aligned to center.
+	 */
+	private int VERTICAL_ALIGNMENT_CENTER = 32;
+
+	/**
 	 * Orientation of the layout.
 	 */
 	private int orientation;
 
 	/**
+	 * Is spacing between contained components enabled. Defaults to false.
+	 */
+	private boolean spacing = false;
+
+	/**
 	 * Creates a new ordered layout. The order of the layout is
 	 * <code>ORIENTATION_VERTICAL</code>.
 	 */
@@ -147,6 +189,7 @@ public class OrderedLayout extends AbstractComponentContainer implements Layout
 	public void removeComponent(Component c) {
 		super.removeComponent(c);
 		components.remove(c);
+		componentToAlignment.remove(c);
 		requestRepaint();
 	}
 
@@ -169,19 +212,40 @@ public class OrderedLayout extends AbstractComponentContainer implements Layout
 	 *             if the paint operation failed.
 	 */
 	public void paintContent(PaintTarget target) throws PaintException {
+		super.paintContent(target);
 
 		// Adds the attributes: orientation
 		// note that the default values (b/vertival) are omitted
 		if (orientation == ORIENTATION_HORIZONTAL)
 			target.addAttribute("orientation", "horizontal");
 
+		if (this.spacing)
+			target.addAttribute("spacing", this.spacing);
+
+		// Store alignment info in this String
+		String alignments = "";
+
 		// Adds all items in all the locations
 		for (Iterator i = components.iterator(); i.hasNext();) {
 			Component c = (Component) i.next();
 			if (c != null) {
+				// Paint child component UIDL
 				c.paint(target);
+
+				// Get alignment info for component
+				if (componentToAlignment.containsKey(c))
+					alignments += ((Integer) componentToAlignment.get(c))
+							.intValue();
+				else
+					// Default alignment is top-left
+					alignments += ALIGNMENT_TOP + ALIGNMENT_LEFT;
+				if (i.hasNext())
+					alignments += ",";
 			}
 		}
+
+		// Add child component alignment info to layout tag
+		target.addAttribute("alignments", alignments);
 	}
 
 	/**
@@ -238,15 +302,51 @@ public class OrderedLayout extends AbstractComponentContainer implements Layout
 				components.remove(oldComponent);
 				components.add(newLocation, oldComponent);
 				components.remove(newComponent);
+				componentToAlignment.remove(newComponent);
 				components.add(oldLocation, newComponent);
 			} else {
 				components.remove(newComponent);
 				components.add(oldLocation, newComponent);
 				components.remove(oldComponent);
+				componentToAlignment.remove(oldComponent);
 				components.add(newLocation, oldComponent);
 			}
 
 			requestRepaint();
 		}
 	}
+
+	/**
+	 * Set alignment for one contained component in this layout.
+	 * 
+	 * @param childComponent
+	 *            the component to align within it's layout cell.
+	 * @param horizontalAlignment
+	 *            the horizontal alignment for the child component (left,
+	 *            center, right).
+	 * @param verticalAlignment
+	 *            the vertical alignment for the child component (top, center,
+	 *            bottom).
+	 */
+	public void setComponentAlignment(Component childComponent,
+			int horizontalAlignment, int verticalAlignment) {
+		componentToAlignment.put(childComponent, new Integer(
+				horizontalAlignment + verticalAlignment));
+	}
+
+	/**
+	 * Enable spacing between child components within this layout.
+	 * 
+	 * <p>
+	 * <strong>NOTE:</strong> This will only affect spaces between components,
+	 * not also all around spacing of the layout (i.e. do not mix this with HTML
+	 * Table elements cellspacing-attribute). Use {@link #setMargin(boolean)} to
+	 * add extra space around the layout.
+	 * </p>
+	 * 
+	 * @param enabled
+	 */
+	public void setSpacing(boolean enabled) {
+		this.spacing = enabled;
+	}
 }
diff --git a/src/com/itmill/toolkit/ui/Panel.java b/src/com/itmill/toolkit/ui/Panel.java
index 4cf5c70a06..81a7eea6ff 100644
--- a/src/com/itmill/toolkit/ui/Panel.java
+++ b/src/com/itmill/toolkit/ui/Panel.java
@@ -39,7 +39,6 @@ import com.itmill.toolkit.terminal.KeyMapper;
 import com.itmill.toolkit.terminal.PaintException;
 import com.itmill.toolkit.terminal.PaintTarget;
 import com.itmill.toolkit.terminal.Scrollable;
-import com.itmill.toolkit.terminal.Sizeable;
 
 /**
  * Panel - a simple single component container.
@@ -49,8 +48,8 @@ import com.itmill.toolkit.terminal.Sizeable;
  * @VERSION@
  * @since 3.0
  */
-public class Panel extends AbstractComponentContainer implements Sizeable,
-		Scrollable, ComponentContainer.ComponentAttachListener,
+public class Panel extends AbstractLayout implements Scrollable,
+		ComponentContainer.ComponentAttachListener,
 		ComponentContainer.ComponentDetachListener, Action.Container {
 
 	public static final String STYLE_LIGHT = "light";
@@ -58,38 +57,11 @@ public class Panel extends AbstractComponentContainer implements Sizeable,
 	public static final String STYLE_EMPHASIZE = "emphasize";
 
 	/**
-	 * Use this stylename with {@link #addStyleName(String)} to remove padding
-	 * between Panel borders and content. The actual client-side implementation
-	 * will determine which stylenames it implements.
-	 */
-	public static final String STYLE_NO_PADDING = "nopad";
-
-	/**
 	 * Layout of the panel.
 	 */
 	private Layout layout;
 
 	/**
-	 * Width of the panel or -1 if unspecified.
-	 */
-	private int width = -1;
-
-	/**
-	 * Height of the panel or -1 if unspecified.
-	 */
-	private int height = -1;
-
-	/**
-	 * Width unit.
-	 */
-	private int widthUnit = Sizeable.UNITS_PIXELS;
-
-	/**
-	 * Height unit.
-	 */
-	private int heightUnit = Sizeable.UNITS_PIXELS;
-
-	/**
 	 * Scroll X position.
 	 */
 	private int scrollOffsetX = 0;
@@ -210,12 +182,7 @@ public class Panel extends AbstractComponentContainer implements Sizeable,
 	public void paintContent(PaintTarget target) throws PaintException {
 		layout.paint(target);
 
-		if (height > -1)
-			target.addVariable(this, "height", getHeight()
-					+ UNIT_SYMBOLS[getHeightUnits()]);
-		if (width > -1)
-			target.addVariable(this, "width", getWidth()
-					+ UNIT_SYMBOLS[getWidthUnits()]);
+		super.paintContent(target);
 
 		if (isScrollable()) {
 			target.addVariable(this, "scrollleft", getScrollOffsetX());
@@ -306,52 +273,6 @@ public class Panel extends AbstractComponentContainer implements Sizeable,
 	}
 
 	/**
-	 * Gets the height in pixels.
-	 * 
-	 * @return The height in pixels or negative value if not assigned.
-	 * @see com.itmill.toolkit.terminal.Sizeable#getHeight()
-	 */
-	public int getHeight() {
-		return height;
-	}
-
-	/**
-	 * Gets the Width in pixel.
-	 * 
-	 * @return The width in pixels or negative value if not assigned.
-	 * @see com.itmill.toolkit.terminal.Sizeable#getWidth()
-	 */
-	public int getWidth() {
-		return width;
-	}
-
-	/**
-	 * Sets the height in pixels. Use negative value to let the client decide
-	 * the height.
-	 * 
-	 * @param height
-	 *            the height to set.
-	 * @see com.itmill.toolkit.terminal.Sizeable#setHeight(int)
-	 */
-	public void setHeight(int height) {
-		this.height = height;
-		requestRepaint();
-	}
-
-	/**
-	 * Sets the width in pixels. Use negative value to allow the client decide
-	 * the width.
-	 * 
-	 * @param width
-	 *            the width to set.
-	 * @see com.itmill.toolkit.terminal.Sizeable#setWidth(int)
-	 */
-	public void setWidth(int width) {
-		this.width = width;
-		requestRepaint();
-	}
-
-	/**
 	 * Called when one or more variables handled by the implementing class are
 	 * changed.
 	 * 
@@ -396,42 +317,6 @@ public class Panel extends AbstractComponentContainer implements Sizeable,
 
 	}
 
-	/**
-	 * Gets the height property units.
-	 * 
-	 * @see com.itmill.toolkit.terminal.Sizeable#getHeightUnits()
-	 */
-	public int getHeightUnits() {
-		return heightUnit;
-	}
-
-	/**
-	 * Gets the width property units.
-	 * 
-	 * @see com.itmill.toolkit.terminal.Sizeable#getWidthUnits()
-	 */
-	public int getWidthUnits() {
-		return widthUnit;
-	}
-
-	/**
-	 * Sets the height units.
-	 * 
-	 * @see com.itmill.toolkit.terminal.Sizeable#setHeightUnits(int)
-	 */
-	public void setHeightUnits(int units) {
-		heightUnit = units;
-	}
-
-	/**
-	 * Sets the width units.
-	 * 
-	 * @see com.itmill.toolkit.terminal.Sizeable#setWidthUnits(int)
-	 */
-	public void setWidthUnits(int units) {
-		widthUnit = units;
-	}
-
 	/* Scrolling functionality */
 
 	/* Documented in interface */
diff --git a/src/com/itmill/toolkit/ui/SplitPanel.java b/src/com/itmill/toolkit/ui/SplitPanel.java
index 41416c9de2..cb9adc5eef 100644
--- a/src/com/itmill/toolkit/ui/SplitPanel.java
+++ b/src/com/itmill/toolkit/ui/SplitPanel.java
@@ -45,8 +45,7 @@ import com.itmill.toolkit.terminal.Sizeable;
  * @VERSION@
  * @since 5.0
  */
-public class SplitPanel extends AbstractComponentContainer implements Layout,
-		Sizeable {
+public class SplitPanel extends AbstractLayout {
 
 	/* Predefined orientations ***************************************** */
 
@@ -69,14 +68,6 @@ public class SplitPanel extends AbstractComponentContainer implements Layout,
 	 */
 	private int orientation;
 
-	private int height;
-
-	private int heightUnit;
-
-	private int width;
-
-	private int widthUnit;
-
 	private int pos = 50;
 
 	private int posUnit = UNITS_PERCENTAGE;
@@ -87,6 +78,7 @@ public class SplitPanel extends AbstractComponentContainer implements Layout,
 	 */
 	public SplitPanel() {
 		orientation = ORIENTATION_VERTICAL;
+		setSizeFull();
 	}
 
 	/**
@@ -98,6 +90,7 @@ public class SplitPanel extends AbstractComponentContainer implements Layout,
 	 */
 	public SplitPanel(int orientation) {
 		this.orientation = orientation;
+		setSizeFull();
 	}
 
 	/**
@@ -217,18 +210,8 @@ public class SplitPanel extends AbstractComponentContainer implements Layout,
 	 *             if the paint operation failed.
 	 */
 	public void paintContent(PaintTarget target) throws PaintException {
-
-		// TODO refine size attributes
-		if (width > 0) {
-			target.addAttribute("width", width + UNIT_SYMBOLS[widthUnit]);
-		} else {
-			target.addAttribute("width", "100%");
-		}
-		if (height > 0) {
-			target.addAttribute("height", height + UNIT_SYMBOLS[heightUnit]);
-		} else {
-			target.addAttribute("height", "100%");
-		}
+		
+		super.paintContent(target);
 
 		String position = pos + UNIT_SYMBOLS[posUnit];
 
@@ -293,47 +276,13 @@ public class SplitPanel extends AbstractComponentContainer implements Layout,
 	/**
 	 * Moves the position of the splitter with given position and unit.
 	 * 
-	 * Supported Units are {@link Sizeable}.UNITS_PERSENTAGE and
-	 * Sizeable.UNITS_PIXELS
-	 * 
 	 * @param pos
 	 *            size of the first region
-	 * @oaran unit the unit (from {@link Sizeable}) in which the size is given.
+	 * @param unit the unit (from {@link Sizeable}) in which the size is given.
 	 */
 	public void setSplitPosition(int pos, int unit) {
 		this.pos = pos;
 		this.posUnit = unit;
 	}
 
-	public int getHeight() {
-		return height;
-	}
-
-	public int getHeightUnits() {
-		return heightUnit;
-	}
-
-	public int getWidth() {
-		return width;
-	}
-
-	public int getWidthUnits() {
-		return widthUnit;
-	}
-
-	public void setHeight(int height) {
-		this.height = height;
-	}
-
-	public void setHeightUnits(int units) {
-		this.heightUnit = units;
-	}
-
-	public void setWidth(int width) {
-		this.width = width;
-	}
-
-	public void setWidthUnits(int units) {
-		this.widthUnit = units;
-	}
 }
diff --git a/src/com/itmill/toolkit/ui/TabSheet.java b/src/com/itmill/toolkit/ui/TabSheet.java
index 293d8bcf32..aacdfb43d6 100644
--- a/src/com/itmill/toolkit/ui/TabSheet.java
+++ b/src/com/itmill/toolkit/ui/TabSheet.java
@@ -44,12 +44,12 @@ import com.itmill.toolkit.terminal.*;
  * @VERSION@
  * @since 3.0
  */
-public class TabSheet extends AbstractComponentContainer implements Sizeable {
+public class TabSheet extends AbstractLayout {
 
 	/**
 	 * Use this stylename with {@link #addStyleName(String)} to remove padding
-	 * between TabSheet borders and content. The actual client-side implementation
-	 * will determine which stylenames it implements.
+	 * between TabSheet borders and content. The actual client-side
+	 * implementation will determine which stylenames it implements.
 	 */
 	public static final String STYLE_NO_PADDING = "nopad";
 
@@ -80,14 +80,6 @@ public class TabSheet extends AbstractComponentContainer implements Sizeable {
 	 */
 	private boolean tabsHidden;
 
-	private int height = -1;
-
-	private int heightUnit;
-
-	private int width = -1;
-
-	private int widthUnit;
-
 	/**
 	 * Constructs a new Tabsheet. Tabsheet is immediate by default.
 	 */
@@ -206,18 +198,11 @@ public class TabSheet extends AbstractComponentContainer implements Sizeable {
 	 *             if the paint operation failed.
 	 */
 	public void paintContent(PaintTarget target) throws PaintException {
-
+		super.paintContent(target);
+		
 		if (areTabsHidden())
 			target.addAttribute("hidetabs", true);
 
-		if (width > -1) {
-			target.addAttribute("width", getWidth() + UNIT_SYMBOLS[widthUnit]);
-		}
-		if (height > -1) {
-			target.addAttribute("height", getHeight()
-					+ UNIT_SYMBOLS[heightUnit]);
-		}
-
 		target.startTag("tabs");
 
 		for (Iterator i = getComponentIterator(); i.hasNext();) {
@@ -507,39 +492,4 @@ public class TabSheet extends AbstractComponentContainer implements Sizeable {
 		fireEvent(new SelectedTabChangeEvent(this));
 	}
 
-	public int getHeight() {
-		return height;
-	}
-
-	public int getHeightUnits() {
-		return heightUnit;
-	}
-
-	public int getWidth() {
-		return width;
-	}
-
-	public int getWidthUnits() {
-		return widthUnit;
-	}
-
-	public void setHeight(int height) {
-		this.height = height;
-		requestRepaint();
-	}
-
-	public void setHeightUnits(int units) {
-		this.heightUnit = units;
-		requestRepaint();
-	}
-
-	public void setWidth(int width) {
-		this.width = width;
-		requestRepaint();
-	}
-
-	public void setWidthUnits(int units) {
-		this.widthUnit = units;
-		requestRepaint();
-	}
 }
diff --git a/src/com/itmill/toolkit/ui/Table.java b/src/com/itmill/toolkit/ui/Table.java
index c36f7bd811..6d5a699116 100644
--- a/src/com/itmill/toolkit/ui/Table.java
+++ b/src/com/itmill/toolkit/ui/Table.java
@@ -2421,9 +2421,9 @@ public class Table extends AbstractSelect implements Action.Container,
 	}
 
 	/**
-	 * Is sorting disabled alltogether.
+	 * Is sorting disabled altogether.
 	 * 
-	 * True iff no sortable columns are given even in the case where datasource
+	 * True iff no sortable columns are given even in the case where data source
 	 * would support this.
 	 * 
 	 * @return True iff sorting is disabled.
@@ -2433,9 +2433,9 @@ public class Table extends AbstractSelect implements Action.Container,
 	}
 
 	/**
-	 * Disables the sorting alltogether.
+	 * Disables the sorting altogether.
 	 * 
-	 * To disable sorting alltogether, set to true. In this case no sortable
+	 * To disable sorting altogether, set to true. In this case no sortable
 	 * columns are given even in the case where datasource would support this.
 	 * 
 	 * @param sortDisabled
@@ -2449,7 +2449,7 @@ public class Table extends AbstractSelect implements Action.Container,
 	}
 
 	/**
-	 * Gets the height property units.
+	 * Gets height property unit.
 	 * 
 	 * @see com.itmill.toolkit.terminal.Sizeable#getHeightUnits()
 	 */
@@ -2458,7 +2458,7 @@ public class Table extends AbstractSelect implements Action.Container,
 	}
 
 	/**
-	 * Gets the width property units.
+	 * Gets width property unit.
 	 * 
 	 * @see com.itmill.toolkit.terminal.Sizeable#getWidthUnits()
 	 */
@@ -2467,7 +2467,7 @@ public class Table extends AbstractSelect implements Action.Container,
 	}
 
 	/**
-	 * Sets the height units.
+	 * Sets height units.
 	 * 
 	 * @see com.itmill.toolkit.terminal.Sizeable#setHeightUnits(int)
 	 */
@@ -2476,7 +2476,7 @@ public class Table extends AbstractSelect implements Action.Container,
 	}
 
 	/**
-	 * Sets the width units. Tabel supports only Sizeable.UNITS_PIXELS and
+	 * Sets width units. Table supports only Sizeable.UNITS_PIXELS and
 	 * Sizeable.UNITS_PERCENTAGE. Setting to any other throws
 	 * IllegalArgumentException.
 	 * 
@@ -2491,9 +2491,10 @@ public class Table extends AbstractSelect implements Action.Container,
 	}
 
 	/**
-	 * Gets the height in pixels.
+	 * Gets height.
 	 * 
-	 * @return the height in pixels or negative value if not assigned.
+	 * @return height value as a positive integer or negative value if not
+	 *         assigned.
 	 * @see com.itmill.toolkit.terminal.Sizeable#getHeight()
 	 */
 	public int getHeight() {
@@ -2501,9 +2502,10 @@ public class Table extends AbstractSelect implements Action.Container,
 	}
 
 	/**
-	 * Gets the width in pixels.
+	 * Gets width.
 	 * 
-	 * @return the width in pixels or negative value if not assigned.
+	 * @return width value as positive integer or negative value if not
+	 *         assigned.
 	 * @see com.itmill.toolkit.terminal.Sizeable#getWidth()
 	 */
 	public int getWidth() {
@@ -2511,8 +2513,7 @@ public class Table extends AbstractSelect implements Action.Container,
 	}
 
 	/**
-	 * Sets the height in pixels. Use negative value to let the client decide
-	 * the height.
+	 * Sets height. Use negative value to let the client decide the height.
 	 * 
 	 * @param height
 	 *            the height to set.
@@ -2523,8 +2524,7 @@ public class Table extends AbstractSelect implements Action.Container,
 	}
 
 	/**
-	 * Sets the width in pixels. Use negative value to allow the client decide
-	 * the width.
+	 * Sets width. Use negative value to allow the client decide the width.
 	 * 
 	 * @param width
 	 *            the width to set.
@@ -2547,4 +2547,28 @@ public class Table extends AbstractSelect implements Action.Container,
 		}
 	}
 
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see com.itmill.toolkit.terminal.Sizeable#setSizeFull()
+	 */
+	public void setSizeFull() {
+		setWidth(100);
+		setHeight(100);
+		setWidthUnits(UNITS_PERCENTAGE);
+		setHeightUnits(UNITS_PERCENTAGE);
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see com.itmill.toolkit.terminal.Sizeable#setSizeUndefined()
+	 */
+	public void setSizeUndefined() {
+		setWidth(-1);
+		setHeight(-1);
+		setWidthUnits(UNITS_PIXELS);
+		setHeightUnits(UNITS_PIXELS);
+	}
+
 }
\ No newline at end of file