org.apache.myfaces.trinidadinternal.ui.laf.base.xhtml
Class LinkUtils

java.lang.Object
  org.apache.myfaces.trinidadinternal.ui.laf.base.xhtml.LinkUtils

All Implemented Interfaces:

UIConstants

Deprecated. This class comes from the old Java 1.2 UIX codebase and should not be used anymore.

@Deprecated
public final class LinkUtils
extends java.lang.Object
implements UIConstants

Utility class to pass selected status of Links during the process of rendering in the rendering context.

This can be used by all renderers. But it is necessary that all clients save the stauts before setting the selected status and restore it back once its off with its rendering. Thus once the completion of the children are over the status in the parent nodes remains unaffected. If not done diligently could cause problem. Since saving is done on the context, there could be performance problem.

Version:

$Name: $ ($Revision: adfrt/faces/adf-faces-impl/src/main/java/oracle/adfinternal/view/faces/ui/laf/base/xhtml/LinkUtils.java#0 $) $Date: 10-nov-2005.18:54:00 $

Field Summary

Fields inherited from interface org.apache.myfaces.trinidadinternal.ui.UIConstants

ABBREVIATION_ATTR, ACCESS_KEY_ATTR, ACTIONS_CHILD, ADD_NAME, ADD_ROWS_EVENT, ADVANCED_CHOICES_CHILD, ADVERTISEMENT_LARGE_CHILD, ADVERTISEMENT_MEDIUM_CHILD, AGENT_NAME, ALL_DETAILS_ENABLED_ATTR, ALLOWS_TRANSPARENT_ATTR, ALTERNATE_CONTENT_CHILD, ANCESTOR_ATTRIBUTE_NAME, ANCESTOR_ID_ATTR, ANCESTOR_PATH_ATTR, ANCHOR_ATTR, AND_NAME, ANNOTATION_ATTR, APP_ABOUT_CHILD, APP_COPYRIGHT_CHILD, APP_PRIVACY_CHILD, APPLICATION_SWITCHER_NAME, ATTRIBUTE_MAP_NAME, AUTOFLIP_ATTR, AUTOMATIC_ATTR, AUTOSTART_ATTR, BACKGROUND_ATTR, BACKGROUND_DARK, BACKGROUND_LIGHT, BACKGROUND_MEDIUM, BACKGROUND_TRANSPARENT, BANDING_SHADE_DARK, BANDING_SHADE_LIGHT, BEAN_NAME, BETWEEN_TEXT_ATTR, BLOCK_SIZE_ATTR, BODY_NAME, BORDER_ATTR, BORDER_LAYOUT_NAME, BORDER_WIDTH_ATTR, BOTTOM_CHILD, BOUND_ATTRIBUTE_NAME, BOUND_MESSAGE_NAME, BOUND_TEXT_NAME, BOUND_VALUE_PROVIDER_NAME, BRANDING_APP_CHILD, BRANDING_APP_CONTEXTUAL_CHILD, BRANDING_CHILD, BRANDING_COOPERATIVE_CHILD, BREAD_CRUMB_TEXT_ATTR, BREAD_CRUMBS_NAME, BUNDLE_NAME, BUTTON_CLIENT_ACTION_ATTR, BUTTON_NAME, BYTE_LENGTH_NAME, CANCEL_EVENT, CASE_NAME, CATCH_CHILD, CATEGORIES_CHILD, CATEGORY_TITLE_ATTR, CELL_FORMAT_NAME, CELL_NO_WRAP_FORMAT_KEY, CELL_PADDING_ATTR, CELL_SPACING_ATTR, CENTER_CHILD, CHECKED_ATTR, CHILD_BLOCK_SIZE_ATTR, CHILD_DATA_ATTR, CHILD_LIST_NAME, CHILD_MAP_NAME, CHILD_NAME_ATTR, CHILD_TYPE_TEXT, CHILD_TYPE_TEXT_ATTR, CHOICE_NAME, CHROME_TYPE_ATTR, COLLAPSE_ALL_EVENT, COLLAPSE_DESTINATION_KEY, COLOR_BUTTON_NAME, COLOR_DATA_ATTR, COLOR_FIELD_NAME, COLOR_NAME, COLOR_PALETTE_NAME, COLOR_SWATCH_NAME, COLUMN_BANDING, COLUMN_DATA_FORMAT_KEY, COLUMN_FOOTER_CHILD, COLUMN_FORMAT_ATTR, COLUMN_GROUP_NAME, COLUMN_HEADER_DATA_ATTR, COLUMN_HEADER_FORMAT_ATTR, COLUMN_HEADER_STAMP_CHILD, COLUMN_NAME, COLUMN_SPAN_ATTR, COLUMNS_ATTR, COMMAND_ITEM_NAME, COMMAND_NAVIGATION_ITEM_NAME, COMPACT_ATTR, COMPARISON_NAME, COMPARISON_TYPE_EQUALS, COMPARISON_TYPE_GREATER_THAN, COMPARISON_TYPE_GREATER_THAN_OR_EQUALS, COMPARISON_TYPE_LESS_THAN, COMPARISON_TYPE_LESS_THAN_OR_EQUALS, COMPARISON_TYPE_NOT_EQUALS, COMPOSITE_ROLE, CONCAT_NAME, CONCISE_MESSAGE_CHILD, CONFIG_NAME_PARAM, CONTENT_FOOTER_CHILD, CONTENT_FOOTER_NAME, CONTENT_FORM_CHILD, CONTENT_LINK_CHILD, CONTENT_STYLE_ATTR, CONTENT_STYLE_CLASS_ATTR, CONTENT_TYPE_ATTR, CONTENTS_NAME, CONTEXT_POPPING_NAME, CONTEXT_PROPERTY_NAME, CONTEXT_SWITCHER_CHILD, CONTEXT_URI_PARAM, CONTROLS_ALL, CONTROLS_ATTR, CONTROLS_MINIMAL, CONTROLS_NONE, CONTROLS_NONE_VISIBLE, CONTROLS_TYPICAL, CONVERT_NAME, CONVERT_PARAM, CONVERTER_ATTR, CURRENT_DATA_ATTR, CURRENT_INDEX_ATTR, CUSTOM_COLOR_DATA_ATTR, DATA_KEY, DATA_NAME, DATA_NAME_ATTR, DATA_NAMESPACE_ATTR, DATA_OBJECT_NAME, DATE_BUTTON_NAME, DATE_EVENT, DATE_FIELD_NAME, DATE_NAME, DATE_STYLE_PARAM, DECIMAL_NAME, DEFAULT_CASE_ATTR, DEFAULT_COMMAND_ATTR, DEFAULT_CONTENTS_ATTR, DEFAULT_LAYOUT, DEFAULT_NAME, DEFAULTING_NAME, DESCRIPTION_ATTR, DESCRIPTION_KEY, DESTINATION_ATTR, DESTINATION_KEY, DESTINATION_TEXT_KEY, DETAIL_STAMP_CHILD, DETAILED_MESSAGE_CHILD, DIRECTION_ATTR, DIRTY_ATTR, DISABLED_ATTR, DISCLOSE_MANY_ATTR, DISCLOSE_NONE_ATTR, DISCLOSED_ATTR, DISCLOSED_KEY, DISCLOSED_TEXT_ATTR, DISPLAY_GRID_KEY, DOCUMENT_NAME, EMBEDDED_ATTR, EMPTY_TEXT_ATTR, ENC_PARAM, ENCODED_PARAMETER_NAME, END_CHILD, ENTER_CLIENT_ACTION_ATTR, ESCAPE_ATTR, EVENT_ATTR, EVENT_PARAM, EXPAND_ALL_ENABLED_ATTR, EXPAND_ALL_EVENT, EXPAND_DESTINATION_KEY, EXPAND_EVENT, EXPANDABLE_ALWAYS, EXPANDABLE_COLLAPSED, EXPANDABLE_EXPANDED, EXPANDABLE_KEY, EXPANDABLE_NO, EXPRESSION_LANGUAGE_ATTRIBUTE_NAME, FACET_DEFAULT, FACET_EMAIL, FACET_PORTLET, FACET_PRINTABLE, FIELD_WIDTH_ATTR, FILE_UPLOAD_NAME, FILTER_CHILD, FILTER_CHOICE_CHILD, FIRST_CLICK_PASSED_ATTR, FIXED_NAME, FLOW_LAYOUT_NAME, FOCUS_EVENT, FOCUS_PATH_ATTR, FOOTER_CHILD, FOOTER_NAME, FORM_DATA_ATTR, FORM_NAME_ATTR, FORM_NAME_PROPERTY, FORM_SUBMITTED_ATTR, FORM_VALUE_NAME, FORMAT_NAME, FRAME_BORDER_LAYOUT_NAME, FRAME_NAME, GENERATES_CONTENT_ATTR, GLOBAL_BUTTON_BAR_NAME, GLOBAL_BUTTON_NAME, GLOBAL_HEADER_NAME, GLOBAL_ONLY_ATTR, GOTO_EVENT, H_ALIGN_ATTR, H_ALIGN_CENTER, H_ALIGN_END, H_ALIGN_LEFT, H_ALIGN_RIGHT, H_ALIGN_START, HARD_WRAP, HEAD_NAME, HEADER_ATTR, HEADER_CHILD, HEADER_INSTRUCTIONS_CHILD, HEADER_NAME, HEADER_TEXT_ATTR, HEADERS_ATTR, HEIGHT_ATTR, HIDE_EVENT, HORIZONTAL_LAYOUT, HTML_NAME, ICON_ATTR, ICON_BUTTON_FORMAT, ICON_KEY, ICON_KEY_NAME, ICON_NAME, ICON_REQUIRED, ICON_SHORT_DESC_KEY, ID_ATTR, IF_NAME, IMAGE_ATTR, IMAGE_MAP_TYPE_ATTR, IMAGE_MAP_TYPE_NONE, IMAGE_MAP_TYPE_SERVER, IMAGE_NAME, IN_CONTEXT_BRANDING_STYLE, INCLUDE_NAME, INCOMPLETE_DATA_SET, INFO_FOOTNOTE_CHILD, INFO_RETURN_CHILD, INFO_STATUS_CHILD, INFO_SUPPLEMENTAL_CHILD, INFO_USER_CHILD, INITIAL_FOCUS_CONTEXT_PROPERTY, INITIAL_FOCUS_ID_ATTR, INLINE_DATE_PICKER_NAME, INLINE_NAME, INLINE_STYLE_ATTR, INNER_BOTTOM_CHILD, INNER_END_CHILD, INNER_HEIGHT_ATTR, INNER_LEFT_CHILD, INNER_RIGHT_CHILD, INNER_START_CHILD, INNER_TOP_CHILD, INNER_WIDTH_ATTR, INSERTED_NODE_LIST_NAME, INSTANCE_NAME, INSTRUCTION_STYLE, INTERVAL_ATTR, ITEM_TITLE_ATTR, ITEMS_CHILD, JSP_PARAM, LABEL_ATTR, LABEL_CHILD, LABEL_WIDTH_ATTR, LABELED_NODE_ID_ATTR, LANGUAGE_ATTR, LAYOUT_ATTR, LEADING_CHILD, LEADING_DESC_SHOWN_ATTR, LEADING_FOOTER_CHILD, LEADING_HEADER_ATTR, LEFT_CHILD, LEVEL_ATTR, LINK_NAME, LIST_STYLE_ATTR, LIST_STYLE_CIRCLE, LIST_STYLE_DECIMAL, LIST_STYLE_DISC, LIST_STYLE_LOWER_ALPHA, LIST_STYLE_NONE, LIST_STYLE_SQUARE, LIST_STYLE_UPPER_ALPHA, LOC_PARAM, LOCATION_CHILD, LOCATION_PARAM, LONG_DESC_ATTR, LONG_DESC_URL_ATTR, LOV_EVENT, LOV_FILTER_EVENT, LOV_SEARCH_TEXT, MAILTO_NAME, MARGIN_HEIGHT_ATTR, MARGIN_WIDTH_ATTR, MARLIN_NAMESPACE, MAX_COLUMNS_ATTR, MAX_VALUE_ATTR, MAX_VALUE_PARAM, MAX_VALUE_UNKNOWN, MAX_VISITED_ATTR, MAXIMUM_LENGTH_ATTR, MENU_LIST_NAME, MENU_SWITCH_CHILD, MESSAGE_ATTR, MESSAGE_BOX_NAME, MESSAGE_FORMAT_NAME, MESSAGE_TYPE_ATTR, MESSAGE_TYPE_CONFIRMATION, MESSAGE_TYPE_ERROR, MESSAGE_TYPE_INFO, MESSAGE_TYPE_NONE, MESSAGE_TYPE_PROCESSING, MESSAGE_TYPE_WARNING, MESSAGES_CHILD, META_CONTAINER_CHILD, METHOD_ATTR, METHOD_NAME, MIN_VALUE_ATTR, MIN_VALUE_PARAM, MINIMUM_WIDTH_ATTR, MODEL_ATTR, MONTH_PARAM, MULTIPLE_ATTR, NAME_ATTR, NAME_TRANSFORMED_ATTR, NAME_VALUES_ATTR, NAMED_SOURCE_ATTR, NAMES_ATTR, NAVIGATE_EVENT, NAVIGATION_BAR_NAME, NAVIGATION_EXCLUDE_NAMES_ATTR, NAVIGATION_FORM_NAME_ATTR, NAVIGATION_GLOBAL_CHILD, NAVIGATION_PATH_NAME, NAVIGATION_TREE_NAME, NAVIGATION1_CHILD, NAVIGATION2_CHILD, NAVIGATION3_CHILD, NEXT_EVENT, NO_AUTO_COMPLETE_ATTR, NO_BANDING, NODE_ATTR, NODE_PARAM, NODE_STAMP_CHILD, NODES_ATTR, NODES_KEY, NOT_NAME, NULL_NAME, NUMBER_FORMAT, OBJECT_NAME_FORMAT, ON_BLUR_ATTR, ON_BLUR_VALIDATER_ATTR, ON_CHANGE_ATTR, ON_CLICK_ATTR, ON_CLICK_KEY, ON_COLOR_SELECT_ATTR, ON_DOUBLE_CLICK_ATTR, ON_FOCUS_ATTR, ON_KEY_DOWN_ATTR, ON_KEY_PRESS_ATTR, ON_KEY_UP_ATTR, ON_LOAD_ATTR, ON_LOV_INIT_ATTR, ON_LOV_SELECT_ATTR, ON_LOV_VALIDATE_ATTR, ON_MOUSE_DOWN_ATTR, ON_MOUSE_MOVE_ATTR, ON_MOUSE_OUT_ATTR, ON_MOUSE_OVER_ATTR, ON_MOUSE_UP_ATTR, ON_NAVIGATE_ATTR, ON_SELECT_ATTR, ON_SUBMIT_ATTR, ON_SUBMIT_VALIDATER_ATTR, ON_SWITCH_APP_ATTR, ON_UNLOAD_ATTR, OPTION_NAME, OR_NAME, ORIENTATION_ATTR, ORIENTATION_BOTTOM, ORIENTATION_DEFAULT, ORIENTATION_HORIZONTAL, ORIENTATION_TOP, ORIENTATION_VERTICAL, PAGE_HEADER_LAYOUT_NAME, PAGE_LAYOUT_NAME, PAGE_MENU_BAR_NAME, PAGE_MENU_BUTTONS_NAME, PAGE_MENU_LIST_NAME, PAGE_MENU_TABS_NAME, PAGE_NAME, PAGE_NAVIGATION_PATH_NAME, PAGE_NAVIGATION_TREE_NAME, PAGE_STAMP_STYLE, PALETTE_ID_ATTR, PALETTE_NAME, PARSE_NAME, PARTIAL_PARAM, PARTIAL_RENDER_MODE_ATTR, PARTIAL_RENDER_MODE_NONE, PARTIAL_RENDER_MODE_SELF, PARTIAL_ROOT_NAME, PARTIAL_TARGETS_ATTR, PARTIAL_TARGETS_PARAM, PATH_STAMP_CHILD, PATTERN_ATTR, PATTERN_PARAM, PATTERNS_ATTR, PERCENT_COMPLETE_ATTR, PERCENT_UNKNOWN, PICKER_ID_ATTR, PLAY_COUNT_ATTR, PLAYER_ATTR, PLAYER_LINK, PLAYER_QUICKTIME, PLAYER_REAL, PLAYER_WINDOWS, POSITION_ABOVE, POSITION_ATTR, POSITION_BELOW, POSITION_BOTH, POST_TEXT_ATTR, PRE_TEXT_ATTR, PREVIOUS_EVENT, PRIMARY_CLIENT_ACTION_ATTR, PROCESS_CHOICE_BAR_NAME, PROCESS_STEPS_NAME, PROCESS_TRAIN_NAME, PROCESSING_NAME, PROMPT_CHILD, PROVIDER_ATTR, PROXIED_ATTR, PROXY_ATTR, RAW_TEXT_NAME, READ_ONLY_ATTR, REG_EXP_NAME, RENDERED_ATTR, REORDER_ONLY_ATTR, REORDERABLE_ATTR, REQUIRED_ATTR, REQUIRED_NO, REQUIRED_UI_ONLY, REQUIRED_YES, RIGHT_CHILD, ROOT_ATTRIBUTE_MAP_NAME, ROOT_PARAM, ROW_BANDING, ROW_FORMATS_ATTR, ROW_HEADER_DATA_ATTR, ROW_HEADER_FORMATS_ATTR, ROW_HEADER_STAMP_CHILD, ROW_LAYOUT_NAME, ROW_SPAN_ATTR, ROWS_ATTR, SAMPLE_NAME, SCRIPT_NAME, SCROLLED_VALUE_ATTR, SCROLLED_VALUE_PARAM, SCROLLING_ATTR, SCROLLING_AUTO, SCROLLING_NO, SCROLLING_YES, SEARCH_AREA_MODE_ATTR, SEARCH_CHILD, SEARCH_DESC_ATTR, SEARCH_INSTRUCTIONS_CHILD, SEARCH_TEXT_ATTR, SECRET_ATTR, SECRET_FIELD_DEFAULT_VALUE, SELECT_ATTR, SELECT_MODE_KEY, SELECT_OPTION_NAME, SELECTED_ATTR, SELECTED_INDEX_ATTR, SELECTED_KEY, SELECTED_VALUE_ATTR, SELECTION_ATTR, SELECTION_CHILD, SELECTION_PARAM, SEPARATOR_CHILD, SEPARATOR_NAME, SERVER_VALIDATER_ATTR, SERVLET_INCLUDE_NAME, SHORT_DESC_ATTR, SHORT_TEXT_ATTR, SHOW_ALL_ACTIVE, SHOW_ALL_ATTR, SHOW_ALL_NO, SHOW_ALL_YES, SHOW_EVENT, SHOW_ITEM_NAME, SHOW_ONE_TAB_NAME, SHOW_REQUIRED_ATTR, SHOW_WINDOW_ATTR, SIDE_BAR_NAME, SIDE_NAV_NAME, SIMPLE_ATTR, SINGLE_SELECTION_NAME, SINGLE_STEP, SIZE_ATTR, SIZE_PARAM, SOFT_WRAP, SORT_EVENT, SORT_STATE_ASCENDING, SORT_STATE_DESCENDING, SORTABLE_ASCENDING, SORTABLE_ATTR, SORTABLE_DESCENDING, SORTABLE_HEADER_NAME, SORTABLE_NO, SORTABLE_YES, SOURCE_ATTR, SOURCE_PARAM, SPACER_NAME, STACK_LAYOUT_NAME, STANDBY_TEXT_ATTR, START_CHILD, START_DEPTH_ATTR, START_LEVEL_ATTR, STATE_CHECK_ATTR, STATE_PARAM, STATE_ROLE, STEPS_COMPLETE_ATTR, STRUCTURAL_ROLE, STYLE_CLASS_ATTR, STYLE_SHEET_NAME, STYLE_USAGE_ATTR, STYLED_TEXT_NAME, SUB_TAB_BAR_NAME, SUB_TAB_LAYOUT_NAME, SUB_TABS_CHILD, SUBMIT_BUTTON_NAME, SUBMIT_PREPARE_ATTR, SUMMARY_ATTR, SWITCH_APP_EVENT, SWITCH_APP_TYPE_BACK, SWITCH_APP_TYPE_GOTO, SWITCHER_NAME, TAB_BAR_NAME, TABLE_FILTER_CHILD, TABLE_FOOTER_NAME, TABLE_LAYOUT_NAME, TABLE_NAME, TABLE_NAME_ATTR, TARGET_FRAME_ATTR, TARGET_FRAME_KEY, TEMPLATE_DEFINITION_NAME, TEMPLATE_IMPORT_NAME, TEMPLATE_LIBRARY_NAME, TEMPLATES_NAME, TEXT_ATTR, TEXT_FORMAT, TEXT_KEY, TEXT_NAME, THREADED_ATTR, TIP_ATTR, TITLE_ATTR, TOK_PARAM, TOP_CHILD, TOTAL_CHILD, TRAILING_CHILD, TRAILING_DESC_SHOWN_ATTR, TRAILING_FOOTER_CHILD, TRAILING_HEADER_ATTR, TREE_NAME, TRUNCATE_AT_ATTR, TRUNCATE_NAME, TYPE_ATTR, TYPE_PARAM, TYPE_POST, TYPE_PRE, TYPE_TEXT_ATTR, UNDISCLOSED_TEXT_ATTR, UNKNOWN_ROLE, UNVALIDATED_ATTR, UPDATE_EVENT, URI_PARAM, USE_SEPARATE_ROWS_ATTR, USER_INVISIBLE_ROLE, USES_UPLOAD_ATTR, UTF8_LENGTH_NAME, V_ALIGN_ABSMIDDLE, V_ALIGN_ATTR, V_ALIGN_BOTTOM, V_ALIGN_MIDDLE, V_ALIGN_TOP, VALID_ATTR, VALIDATE_BLANKS_ATTR, VALIDATORS_ATTR, VALUE_ATTR, VALUE_COLUMNS_ATTR, VALUE_PARAM, VALUE_SHOW_ALL, VERTICAL_LAYOUT, WIDTH_ATTR, WIDTH_KEY, WML_NAME, WRAP_ATTR, WRAPPING_DISABLED_ATTR, YEAR_PARAM

Method Summary

static void	endDefaultStyleClassDisabled(UIXRenderingContext context) Deprecated. Called by link containers that have called startDefaultStyleClassDisabled().
static boolean	isDefaultStyleClassDisabled(UIXRenderingContext context) Deprecated. Called by base.desktop.LinkRenderer to detect whether default style class rendering is currently disabled.
static boolean	isSelected(UIXRenderingContext context) Deprecated. This method returns the status of selection.
static void	setSelected(UIXRenderingContext context, boolean selected) Deprecated. Set the status of selection, should be done with caution.
static void	startDefaultStyleClassDisabled(UIXRenderingContext context) Deprecated. Called by link containers prior to rendering their children in order to suppress the rendering of the default link style class (.OraLink).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

isSelected

public static boolean isSelected(UIXRenderingContext context)

Deprecated.

This method returns the status of selection. This method is normally used by parent renderers to query the status and store its initial status and then changes the status of this property for resolving the selected link. Then delegates call to the child renderers once its over sets it back to the initial state. So parent renderers if they are going to change the status they should follow the given fashion

 1. Store the inital-status - by calling  isSelected(RenderingContext)
 2. Change the stauts if necessary using setSelected(RenderingContext,boolean)
 3. Could delegate call to child with the rendering context
 4. Then reset the selection status to the initial status calling
    setSelected(RenderingContext,initial-status)
 

Parameters:

context - The rendering context

Returns:

true if selected else false

See Also:

setSelected(UIXRenderingContext,boolean)

setSelected

public static void setSelected(UIXRenderingContext context,
                               boolean selected)

Deprecated.

Set the status of selection, should be done with caution. This is later retreived while rendering. Ensure to get and store the initial status and reset it back to that initial status.

Parameters:

context - The rendering context

selected - selected status of the link.

See Also:

isSelected(UIXRenderingContext)

startDefaultStyleClassDisabled

public static void startDefaultStyleClassDisabled(UIXRenderingContext context)

Deprecated.

Called by link containers prior to rendering their children in order to suppress the rendering of the default link style class (.OraLink). Most link containers (like tabBar, globalHeader) provide their own style classes - the default OraLink style class ends up getting in the way. Important: Each call to startDefaultStyleClassDisabled() must be followed by a matching call to endDefaultStyleClassDisabled().

endDefaultStyleClassDisabled

public static void endDefaultStyleClassDisabled(UIXRenderingContext context)

Deprecated.

Called by link containers that have called startDefaultStyleClassDisabled().

isDefaultStyleClassDisabled

public static boolean isDefaultStyleClassDisabled(UIXRenderingContext context)

Deprecated.

Called by base.desktop.LinkRenderer to detect whether default style class rendering is currently disabled.