Custom_Image_Header::process_default_headers()

273	public function process_default_headers() {274		global $_wp_default_headers;275 276		if ( ! isset( $_wp_default_headers ) ) {277			return;278		}279 280		if ( ! empty( $this->default_headers ) ) {281			return;282		}283 284		$this->default_headers    = $_wp_default_headers;285		$template_directory_uri   = get_template_directory_uri();286		$stylesheet_directory_uri = get_stylesheet_directory_uri();287 288		foreach ( array_keys( $this->default_headers ) as $header ) {289			$this->default_headers[ $header ]['url'] = sprintf(290				$this->default_headers[ $header ]['url'],291				$template_directory_uri,292				$stylesheet_directory_uri293			);294 295			$this->default_headers[ $header ]['thumbnail_url'] = sprintf(296				$this->default_headers[ $header ]['thumbnail_url'],297				$template_directory_uri,298				$stylesheet_directory_uri299			);300		}301	}