Bug 85147 [Preferences] filter field: Looses focus on type
20050208 When you type in the filter field, the focus ofter switched to the tree. You have to give the filter field the focus again to continue typing
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferenceDialog.java
if (gc.textExtent(textValue).x < maxWidth) {
			gc.dispose();
			return textValue;
		}
		int length = textValue.length();
		int ellipsisWidth = gc.textExtent(ellipsis).x;
		int pivot = length / 2;
		int start = pivot;
		int end = pivot + 1;
		while (start >= 0 && end < length) {
			String s1 = textValue.substring(0, start);
			String s2 = textValue.substring(end, length);
			int l1 = gc.textExtent(s1).x;
			int l2 = gc.textExtent(s2).x;
			if (l1 + ellipsisWidth + l2 < maxWidth) {
				gc.dispose();
				return s1 + ellipsis + s2;
			}
			start--;
			end++;
		}
		gc.dispose();
		return textValue;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.preference.IPreferencePageContainer#updateTitle()
	 */
	public void updateTitle() {