Bug 18132 New wizards should verify if folder is on classpath
1. create J project 'P' with source folder setup (source folder 'src') 2. use new wizard to create a class ==> you can create a class inside 'P' or in a folder which is not on the classpath
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/wizards/NewContainerWizardPage.java
}
		}
		return jelem;
	}
	
	/**
	 * Returns the recommended maximum width for text fields (in pixels)
	 * Not valid until entering createContent.
	 * Overwrite to change value.
	 */
	protected int getMaxFieldWidth() {
		return convertWidthInCharsToPixels(40);
	}
	
	
	/**
	 * Creates the controls for the container field. Expects a GridLayout with at least 3 columns.
	 * @param parent The parent composite
	 * @param nColumns The number of columns to span
	 */
	protected void createContainerControls(Composite parent, int nColumns) {
		fContainerDialogField.doFillIntoGrid(parent, nColumns);
		LayoutUtil.setWidthHint(fContainerDialogField.getTextControl(null), getMaxFieldWidth());
	}
	
	protected void setFocusOnContainer() {
		fContainerDialogField.setFocus();
	}
	
	private class ContainerFieldAdapter implements IStringButtonAdapter, IDialogFieldListener {