Widgets
*/
add_action( 'widgets_init', 'jetpack_image_widget_init' );
function jetpack_image_widget_init() {
register_widget( 'Jetpack_Image_Widget' );
}
class Jetpack_Image_Widget extends WP_Widget {
/**
* Register widget with WordPress.
*/
public function __construct() {
parent::__construct(
'image',
/** This filter is documented in modules/widgets/facebook-likebox.php */
apply_filters( 'jetpack_widget_name', esc_html__( 'Image', 'jetpack' ) ),
array(
'classname' => 'widget_image',
'description' => __( 'Display an image in your sidebar', 'jetpack' ),
'customize_selective_refresh' => true,
)
);
if ( is_active_widget( false, false, $this->id_base ) || is_active_widget( false, false, 'monster' ) || is_customize_preview() ) {
add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_style' ) );
}
}
/**
* Loads file for front-end widget style.
*
* @uses wp_enqueue_style(), plugins_url()
*/
public function enqueue_style() {
wp_enqueue_style( 'jetpack_image_widget', plugins_url( 'image-widget/style.css', __FILE__ ), array(), '20140808' );
}
/**
* Front-end display of widget.
*
* @see WP_Widget::widget()
*
* @param array $args Widget arguments.
* @param array $instance Saved values from database.
*/
public function widget( $args, $instance ) {
echo $args['before_widget'];
$instance = wp_parse_args( $instance, array(
'title' => '',
'img_url' => ''
) );
/** This filter is documented in core/src/wp-includes/default-widgets.php */
$title = apply_filters( 'widget_title', $instance['title'] );
if ( $title ) {
echo $args['before_title'] . esc_html( $title ) . $args['after_title'];
}
if ( '' != $instance['img_url'] ) {
$output = ' .')
' . $output . '';
}
if ( '' != $instance['link'] && empty( $instance['link_target_blank'] ) ) {
$output = '' . $output . '';
}
if ( '' != $instance['caption'] ) {
/** This filter is documented in core/src/wp-includes/default-widgets.php */
$caption = apply_filters( 'widget_text', $instance['caption'] );
$img_width = ( ! empty( $instance['img_width'] ) ? 'style="width: ' . esc_attr( $instance['img_width'] ) .'px"' : '' );
$output = '
' . $output . '
' . $caption . '
'; // wp_kses_post caption on update
}
echo '' . do_shortcode( $output ) . '
';
}
echo "\n" . $args['after_widget'];
}
/**
* Sanitize widget form values as they are saved.
*
* @see WP_Widget::update()
*
* @param array $new_instance Values just sent to be saved.
* @param array $old_instance Previously saved values from database.
*
* @return array Updated safe values to be saved.
*/
public function update( $new_instance, $old_instance ) {
$allowed_caption_html = array(
'a' => array(
'href' => array(),
'title' => array(),
),
'b' => array(),
'em' => array(),
'i' => array(),
'p' => array(),
'strong' => array()
);
$instance = $old_instance;
$instance['title'] = strip_tags( $new_instance['title'] );
$instance['img_url'] = esc_url( $new_instance['img_url'], null, 'display' );
$instance['alt_text'] = strip_tags( $new_instance['alt_text'] );
$instance['img_title'] = strip_tags( $new_instance['img_title'] );
$instance['caption'] = wp_kses( stripslashes($new_instance['caption'] ), $allowed_caption_html );
$instance['align'] = $new_instance['align'];
$instance['img_width'] = absint( $new_instance['img_width'] );
$instance['img_height'] = absint( $new_instance['img_height'] );
$instance['link'] = esc_url( $new_instance['link'], null, 'display' );
$instance['link_target_blank'] = isset( $new_instance['link_target_blank'] ) ? (bool) $new_instance['link_target_blank'] : false;
return $instance;
}
/**
* Back-end widget form.
*
* @see WP_Widget::form()
*
* @param array $instance Previously saved values from database.
*/
public function form( $instance ) {
// Defaults
$instance = wp_parse_args( (array) $instance, array( 'title' => '', 'img_url' => '', 'alt_text' => '', 'img_title' => '', 'caption' => '', 'align' => 'none', 'img_width' => '', 'img_height' => '', 'link' => '', 'link_target_blank' => false ) );
$title = esc_attr( $instance['title'] );
$img_url = esc_url( $instance['img_url'], null, 'display' );
$alt_text = esc_attr( $instance['alt_text'] );
$img_title = esc_attr( $instance['img_title'] );
$caption = esc_textarea( $instance['caption'] );
$align = esc_attr( $instance['align'] );
$img_width = esc_attr( $instance['img_width'] );
$img_height = esc_attr( $instance['img_height'] );
$link_target_blank = checked( $instance['link_target_blank'], true, false );
if ( !empty( $instance['img_url'] ) ) {
// Download the url to a local temp file and then process it with getimagesize so we can optimize browser layout
$tmp_file = download_url( $instance['img_url'], 10 );
if ( ! is_wp_error( $tmp_file ) ) {
$size = getimagesize( $tmp_file );
if ( '' == $instance['img_width'] ) {
$width = $size[0];
$img_width = $width;
} else {
$img_width = absint( $instance['img_width'] );
}
if ( '' == $instance['img_height'] ) {
$height = $size[1];
$img_height = $height;
} else {
$img_height = absint( $instance['img_height'] );
}
unlink( $tmp_file );
}
}
$link = esc_url( $instance['link'], null, 'display' );
echo '
';
$alignments = array(
'none' => __( 'None', 'jetpack' ),
'left' => __( 'Left', 'jetpack' ),
'center' => __( 'Center', 'jetpack' ),
'right' => __( 'Right', 'jetpack' ),
);
echo '';
echo '
' . esc_html__( "If empty, we will attempt to determine the image size.", 'jetpack' ) . '
';
}
} // Class Jetpack_Image_Widget