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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 |
|---|---|
| 903 | switch ( $this->id ) { |
| 904 | case 'widgets': |
| 905 | $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"; |
| 906 | break; |
| 907 | } |
| 908 | |
| 909 | if ( $this->_screen_settings || $this->_options ) |
| 910 | $show_screen = true; |
| 911 | |
| 912 | $this->_show_screen_options = apply_filters( 'screen_options_show_screen', $show_screen, $this ); |
| 913 | return $this->_show_screen_options; |
| 914 | } |
| 915 | |
| 916 | /** |
| 917 | * Render the screen options tab. |
| 918 | * |
| 919 | * @since 3.3.0 |
| 920 | */ |
| 921 | public function render_screen_options() { |