Bug 33488 [Preferences] [Help] F1 help should always give help about the selected page
build I20030227 - Window / Preferences - focus is in tree at left - F1 - it gives you help about the dialog, not the selected page - give the selected page focus - F1 - it gives you help about the page F1 should always give you help about the selected page. It should also give help about the dialog at the same time, if possible (e.g. a link for the page, and a link for the dialog).
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferencePage.java
*/
	public void setErrorMessage(String newMessage) {
		super.setErrorMessage(newMessage);
		if (getContainer() != null) {
			getContainer().updateMessage();
		}
	}
	/**
	 * The <code>PreferencePage</code> implementation of this method 
	 * declared on <code>DialogPage</code> updates the container.
	 */
	public void setMessage(String newMessage, int newType) {
		super.setMessage(newMessage, newType);
		if (getContainer() != null) {
			getContainer().updateMessage();
		}
	}
	/**
	 * Sets the preference store for this preference page.
	 * <p>
	 * If preferenceStore is set to null, getPreferenceStore
	 * will invoke doGetPreferenceStore the next time it is called.
	 * </p>
	 *
	 * @param store the preference store, or <code>null</code>
	 * @see #getPreferenceStore
	 */
	public void setPreferenceStore(IPreferenceStore store) {
		preferenceStore = store;
	}