Bug 243612 [FieldAssist] Content assist does not work well with combo box.
To replicate the problem on a combo box with content assist enabled. This can be seen from the SDK Example provided with eclipse. Verified on 3.2-3.4 1. Click on the button to show the drop down list for the combo 2. Click on the editable text field of the combo 3. Initiate content assist on that text field 4. Now when we move the mouse, the focus is on the drop down list of the combo although it is hidden behind the content assist popup. Clicking once will fill the text field of the combo box with the value from the drop down list (which is hidden now). May be the combo box drop down list should close as soon as content assist is in effect?
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/ContentProposalAdapter.java
/**
	 * Set the label provider that is used to show proposals. The lifecycle of
	 * the specified label provider is not managed by this adapter. Clients must
	 * dispose the label provider when it is no longer needed.
	 * 
	 * @param labelProvider
	 *            the (@link ILabelProvider} used to show proposals.
	 */
	public void setLabelProvider(ILabelProvider labelProvider) {
		this.labelProvider = labelProvider;
	}
	/**
	 * Return the proposal provider that provides content proposals given the
	 * current content of the field. A value of <code>null</code> indicates
	 * that there are no content proposals available for the field.
	 * 
	 * @return the {@link IContentProposalProvider} used to show proposals. May
	 *         be <code>null</code>.
	 */
	public IContentProposalProvider getContentProposalProvider() {
		return proposalProvider;
	}
	/**
	 * Set the content proposal provider that is used to show proposals.
	 * 
	 * @param proposalProvider
	 *            the {@link IContentProposalProvider} used to show proposals
	 */
	public void setContentProposalProvider(
			IContentProposalProvider proposalProvider) {