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(currentPage == null)
			return;
		messageArea.showTitle(currentPage.getTitle(), currentPage.getImage());
	}
	/**
	 * Update the tree to use the specified <code>Font</code>.
	 * 
	 * @param dialogFont
	 *            the <code>Font</code> to use.
	 * @since 3.0
	 */
	protected void updateTreeFont(Font dialogFont) {
		getTreeViewer().getControl().setFont(dialogFont);
	}
	/**
	 * Returns the currentPage.
	 * @return IPreferencePage
	 * @since 3.1
	 */
	protected IPreferencePage getCurrentPage() {
		return currentPage;
	}
	/**
	 * Sets the current page.
	 * @param currentPage
	 * 
	 * @since 3.1
	 */
	protected void setCurrentPage(IPreferencePage currentPage) {
		this.currentPage = currentPage;