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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 |
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340 | * Fires when the {@see WP_Customize_Setting::preview()} method is called for settings |
341 | * not handled as theme_mods or options. |
342 | * |
343 | * The dynamic portion of the hook name, `$this->type`, refers to the setting type. |
344 | * |
345 | * @since 4.1.0 |
346 | * |
347 | * @param WP_Customize_Setting $this {@see WP_Customize_Setting} instance. |
348 | */ |
349 | do_action( "customize_preview_{$this->type}", $this ); |
350 | } |
351 |
|
352 | $this->is_previewed = true; |
353 |
|
354 | return true; |
355 | } |
356 |
|
357 | /** |
358 | * Clear out the previewed-applied flag for a multidimensional-aggregated value whenever its post value is updated. |