Bug 232048 [Viewers] binary incompatibility (adding public fields) reported against jface.viewers
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/CellEditor.java
* @since 3.4
	 */
	protected boolean dependsOnExternalFocusListener() {
		return true;
	}
	/**
	 * @param event
	 *            deactivation event
	 * @since 3.4
	 *
	 */
	protected void deactivate(ColumnViewerEditorDeactivationEvent event) {
		deactivate();
	}
	/**
	 * Returns the duration, in milliseconds, between the mouse button click
	 * that activates the cell editor and a subsequent mouse button click that
	 * will be considered a <em>double click</em> on the underlying control.
	 * Clients may override, in particular, clients can return 0 to denote that
	 * two subsequent mouse clicks in a cell should not be interpreted as a
	 * double click.
	 *
	 * @return the timeout or <code>0</code>
	 * @since 3.4
	 */
	protected int getDoubleClickTimeout() {
		return Display.getCurrent().getDoubleClickTime();
	}
}