Bug 172431 [eclipse3.3only]BPS17-4.5 Adding Date picker to input DateTime value for Axis Scale
In Axis Scale dialog, provide a Data picker next to the input box for convenience of inputting DataTime value.
chart/org.eclipse.birt.chart.ui.extension/src/org/eclipse/birt/chart/ui/swt/composites/TextEditorComposite.java
* @param iStyle
	 */
	public TextEditorComposite( Composite parent, int iStyle )
	{
		this( parent, iStyle, TYPE_NONE );
	}
	/**
	 * 
	 * @param parent
	 * @param iStyle
	 * @param isNumber
	 *            If this argument is true, only number value is valid. The
	 *            fraction value, like "1/3" also is supported as a double
	 *            value.
	 */
	public TextEditorComposite( Composite parent, int iStyle, boolean isNumber )
	{
		this( parent, iStyle, isNumber ? TYPE_NUMBERIC : TYPE_NONE );
	}
	
	/**
	 * 
	 * @param parent
	 * @param iStyle
	 * @param valueType
	 *            Value type for validation, valid type is {@link #TYPE_DATETIME},
	 *            {@link #TYPE_NUMBERIC} or {@link #TYPE_NONE}
	 */
	public TextEditorComposite( Composite parent, int iStyle, int valueType )
	{