Bug 58921 Texts created with unsupported styles
- org.eclipse.jdt.internal.ui.text.AbstractInformationControl.createFilterText creates a Text with style SWT.FLAT - org.eclipse.jdt.internal.ui.filters.CustomFiltersDialog.createCheckBoxList creates a Text with style SWT.VERTICAL (perhaps V_SCROLL was meant?)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/AbstractInformationControl.java
fFilterText.setText(""); 
		fTreeViewer.setInput(newInput);
		if (newSelection != null) {
			fTreeViewer.setSelection(new StructuredSelection(newSelection));
		}
	}
	/**
	 * {@inheritDoc}
	 */
	public void setVisible(boolean visible) {
		if (visible || fIsDecativateListenerActive)
			fShell.setVisible(visible);
	}
	/**
	 * {@inheritDoc}
	 */
	public final void dispose() {
		if (fShell != null && !fShell.isDisposed())
			fShell.dispose();
		else
			widgetDisposed(null);
	}
	
	/**
	 * {@inheritDoc}
	 * @param event can be null
	 * <p>
	 * Subclasses may extend.
	 * </p>
	 */