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
ModifyListener,
		FocusListener,
		KeyListener
{
	
	public static final int TYPE_NONE = 0;
	public static final int TYPE_NUMBERIC = 1;
	public static final int TYPE_DATETIME = 2;
	private transient String sText = null;
	private transient boolean bTextModified = false;
	private transient int iStyle = SWT.NONE;
	private transient Text txtValue = null;
	private transient Vector vListeners = null;
	public static final int TEXT_MODIFIED = 0;
	public static final int TEXT_FRACTION_CONVERTED = 1;
	private transient boolean bEnabled = true;
	private transient int valueType = TYPE_NONE;
	private transient String defaultValue = "0"; 
	/**
	 * Constructor. Default argument value of isFractionSupported is true.
	 * 
	 * @param parent