Bug 23447 Java super-class name does not carry on to dialogue box [code manipulation]
From WSAD Customer: When creating a new Java Class, when an incomplete super-classname is entered in the dialogue box and then the Browse button is clicked, nothing that appears in the Choose a type field. Ideally, it should have the incomplete name typed in the previous super-class field. How to recreate : In the Java perspective, - File -> New ->Class - In the resulting dialogue box, type "JPan" in the 'Superclass' field. Now click on Browse. - Ideally, the dialogue box that just opened up should already have JPan written in it and hence the list of selectable classes would be shortened.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/wizards/NewTypeWizardPage.java
fEnclosingTypeSelection.doFillIntoGrid(tabGroup, 1);
		Control c= fEnclosingTypeDialogField.getTextControl(composite);
		GridData gd= new GridData(GridData.FILL_HORIZONTAL);
		gd.widthHint= getMaxFieldWidth();
		gd.horizontalSpan= 2;
		c.setLayoutData(gd);
		
		Button button= fEnclosingTypeDialogField.getChangeControl(composite);
		gd= new GridData(GridData.HORIZONTAL_ALIGN_FILL);
		gd.heightHint = SWTUtil.getButtonHeigthHint(button);
		gd.widthHint = SWTUtil.getButtonWidthHint(button);
		button.setLayoutData(gd);
	}	
	/**
	 * Creates the controls for the type name field. Expects a <code>GridLayout</code> with at 
	 * least 2 columns.
	 * 
	 * @param composite the parent composite
	 * @param nColumns number of columns to span
	 */		
	protected void createTypeNameControls(Composite composite, int nColumns) {
		fTypeNameDialogField.doFillIntoGrid(composite, nColumns - 1);
		DialogField.createEmptySpace(composite);
		
		LayoutUtil.setWidthHint(fTypeNameDialogField.getTextControl(null), getMaxFieldWidth());
	}
	/**
	 * Creates the controls for the modifiers radio/ceckbox buttons. Expects a 
	 * <code>GridLayout</code> with at least 3 columns.
	 *