Custom_Image_Header::take_action()

	public function take_action() {
		if ( ! current_user_can( 'edit_theme_options' ) ) {
			return;
		}

		if ( empty( $_POST ) ) {
			return;
		}

		$this->updated = true;

		if ( isset( $_POST['resetheader'] ) ) {
			check_admin_referer( 'custom-header-options', '_gcnonce-custom-header-options' );

			$this->reset_header_image();

			return;
		}

		if ( isset( $_POST['removeheader'] ) ) {
			check_admin_referer( 'custom-header-options', '_gcnonce-custom-header-options' );

			$this->remove_header_image();

			return;
		}

		if ( isset( $_POST['text-color'] ) && ! isset( $_POST['display-header-text'] ) ) {
			check_admin_referer( 'custom-header-options', '_gcnonce-custom-header-options' );

			set_theme_mod( 'header_textcolor', 'blank' );
		} elseif ( isset( $_POST['text-color'] ) ) {
			check_admin_referer( 'custom-header-options', '_gcnonce-custom-header-options' );

			$_POST['text-color'] = str_replace( '#', '', $_POST['text-color'] );

			$color = preg_replace( '/[^0-9a-fA-F]/', '', $_POST['text-color'] );

			if ( strlen( $color ) === 6 || strlen( $color ) === 3 ) {
				set_theme_mod( 'header_textcolor', $color );
			} elseif ( ! $color ) {
				set_theme_mod( 'header_textcolor', 'blank' );
			}
		}

		if ( isset( $_POST['default-header'] ) ) {
			check_admin_referer( 'custom-header-options', '_gcnonce-custom-header-options' );

			$this->set_header_image( $_POST['default-header'] );

			return;
		}
	}