Bug 192633 [FieldAssist] auto-activated proposal popup should be closed when trigger character is removed
I20070608-1718 Auto-activated proposal popup should be closed when trigger character is removed. Steps: - open Find/Replace dialog, activate regex - type "\" or "\r" - when proposals appear, press Backspace until field is empty again Was: Proposals stay up Expected: Proposals should disappear when the triggering character is removed. This is also what happens in the Java Editor.
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/ContentProposalAdapter.java
* Flag that indicates whether the adapter is enabled. In some cases,
	 * adapters may be installed but depend upon outside state.
	 */
	private boolean isEnabled = true;
	/*
	 * The delay in milliseconds used when autoactivating the popup.
	 */
	private int autoActivationDelay = 0;
	/*
	 * A boolean indicating whether a keystroke has been received. Used to see
	 * if an autoactivation delay was interrupted by a keystroke.
	 */
	private boolean receivedKeyDown;
	/*
	 * The desired size in pixels of the proposal popup.
	 */
	private Point popupSize;
	/*
	 * The remembered position of the insertion position. Not all controls will
	 * restore the insertion position if the proposal popup gets focus, so we
	 * need to remember it.
	 */
	private int insertionPos = -1;
	/*
	 * The remembered selection range. Not all controls will restore the
	 * selection position if the proposal popup gets focus, so we need to
	 * remember it.
	 */
	private Point selectionRange = new Point(-1, -1);
	/*