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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 854 | switch ( $this->id ) { |
| 855 | case 'widgets': |
| 856 | $this->_screen_settings = '<p><a id="access-on" href="widgets.php?widgets-access=on">' . __('Enable accessibility mode') . '</a><a id="access-off" href="widgets.php?widgets-access=off">' . __('Disable accessibility mode') . "</a></p>\n"; |
| 857 | break; |
| 858 | } |
| 859 | |
| 860 | if ( $this->_screen_settings || $this->_options ) |
| 861 | $show_screen = true; |
| 862 | |
| 863 | $this->_show_screen_options = apply_filters( 'screen_options_show_screen', $show_screen, $this ); |
| 864 | return $this->_show_screen_options; |
| 865 | } |
| 866 | |
| 867 | /** |
| 868 | * Render the screen options tab. |
| 869 | * |
| 870 | * @since 3.3.0 |
| 871 | */ |
| 872 | public function render_screen_options() { |