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
if (fToolBar != null)
			fToolBar.setBackground(background);
	}
	/**
	 * {@inheritDoc}
	 */
	public boolean isFocusControl() {
		return fTreeViewer.getControl().isFocusControl() || fFilterText.isFocusControl();
	}
	/**
	 * {@inheritDoc}
	 */
	public void setFocus() {
		fShell.forceFocus();
		fFilterText.setFocus();
	}
	/**
	 * {@inheritDoc}
	 */
	public void addFocusListener(FocusListener listener) {
		fShell.addFocusListener(listener);
	}
	/**
	 * {@inheritDoc}
	 */
	public void removeFocusListener(FocusListener listener) {
		fShell.removeFocusListener(listener);
	}
	
	final protected ICommand getInvokingCommand() {