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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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 |
|---|---|
| 353 | * Note: If the widget has no form, the text echoed from the default |
| 354 | * form method can be hidden using CSS. |
| 355 | * |
| 356 | * @since 2.8.0 |
| 357 | * |
| 358 | * @param WP_Widget $this The widget instance, passed by reference. |
| 359 | * @param null $return Return null if new fields are added. |
| 360 | * @param array $instance An array of the widget's settings. |
| 361 | */ |
| 362 | do_action_ref_array( 'in_widget_form', array( &$this, &$return, $instance ) ); |
| 363 | } |
| 364 | return $return; |
| 365 | } |
| 366 | |
| 367 | /** Helper function: Registers a single instance. */ |
| 368 | function _register_one($number = -1) { |
| 369 | wp_register_sidebar_widget( $this->id, $this->name, $this->_get_display_callback(), $this->widget_options, array( 'number' => $number ) ); |
| 370 | _register_widget_update_callback( $this->id_base, $this->_get_update_callback(), $this->control_options, array( 'number' => -1 ) ); |
| 371 | _register_widget_form_callback( $this->id, $this->name, $this->_get_form_callback(), $this->control_options, array( 'number' => $number ) ); |