Bug 33628 [Preferences] provide API for showing a specified preference page
There is no way for a plugin to open the (workbench) preference dialog with a certain peference page selected. Enabling this would allow plugins to refer the user to a certain preference page, for example when a misconfiguration is detected during execution of an action. Also this enables developers to write a new search panel to find a text in the preference pages and get the user right there. A method select(IPreferencePage page), select(IPreferenceNode node) or select(String path) in org.eclipse.jface.preference.PreferenceDialog would help.
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/PreferenceDialog.java
public void widgetDisposed(DisposeEvent event) {
				JFaceResources.getFontRegistry().removeListener(fontListener);
			}
		});
		JFaceResources.getFontRegistry().addListener(fontListener);
		
		titleImage = new Label(titleArea, SWT.LEFT);
		titleImage.setBackground(background);
		titleImage.setImage(JFaceResources.getImage(PREF_DLG_TITLE_IMG));
		FormData imageData = new FormData();
		imageData.right = new FormAttachment(100);
		imageData.top = new FormAttachment(0);
		imageData.bottom = new FormAttachment(100);
		titleImage.setLayoutData(imageData);
		messageArea.setTitleLayoutData(createMessageAreaData());
		messageArea.setMessageLayoutData(createMessageAreaData());
		return titleArea;
	}
	/**
	 * Create the layout data for the message area.
	 * 
	 * @return FormData for the message area.
	 */
	private FormData createMessageAreaData() {
		FormData messageData = new FormData();
		messageData.top = new FormAttachment(0);
		messageData.bottom = new FormAttachment(titleImage, 0, SWT.BOTTOM);
		messageData.right = new FormAttachment(titleImage, 0);
		messageData.left = new FormAttachment(0);
		return messageData;