246 lines
10 KiB
PHP
246 lines
10 KiB
PHP
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<?php
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/**
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* Module Name: Image Widget
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* Module Description: Easily add images to your theme's sidebar.
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* Sort Order: 20
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* First Introduced: 1.2
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*/
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/**
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* Register the widget for use in Appearance -> Widgets
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*/
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add_action( 'widgets_init', 'jetpack_image_widget_init' );
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function jetpack_image_widget_init() {
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register_widget( 'Jetpack_Image_Widget' );
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}
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class Jetpack_Image_Widget extends WP_Widget {
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/**
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* Register widget with WordPress.
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*/
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public function __construct() {
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parent::__construct(
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'image',
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/** This filter is documented in modules/widgets/facebook-likebox.php */
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apply_filters( 'jetpack_widget_name', esc_html__( 'Image', 'jetpack' ) ),
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array(
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'classname' => 'widget_image',
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'description' => __( 'Display an image in your sidebar', 'jetpack' ),
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'customize_selective_refresh' => true,
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)
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);
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if ( is_active_widget( false, false, $this->id_base ) || is_active_widget( false, false, 'monster' ) || is_customize_preview() ) {
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add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_style' ) );
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}
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}
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/**
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* Loads file for front-end widget style.
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*
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* @uses wp_enqueue_style(), plugins_url()
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*/
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public function enqueue_style() {
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wp_enqueue_style( 'jetpack_image_widget', plugins_url( 'image-widget/style.css', __FILE__ ), array(), '20140808' );
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}
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/**
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* Front-end display of widget.
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*
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* @see WP_Widget::widget()
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*
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* @param array $args Widget arguments.
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* @param array $instance Saved values from database.
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*/
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public function widget( $args, $instance ) {
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echo $args['before_widget'];
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$instance = wp_parse_args( $instance, array(
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'title' => '',
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'img_url' => ''
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) );
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/** This filter is documented in core/src/wp-includes/default-widgets.php */
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$title = apply_filters( 'widget_title', $instance['title'] );
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if ( $title ) {
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echo $args['before_title'] . esc_html( $title ) . $args['after_title'];
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}
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if ( '' != $instance['img_url'] ) {
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$output = '<img src="' . esc_attr( $instance['img_url'] ) .'" ';
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if ( '' != $instance['alt_text'] ) {
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$output .= 'alt="' . esc_attr( $instance['alt_text'] ) .'" ';
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}
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if ( '' != $instance['img_title'] ) {
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$output .= 'title="' . esc_attr( $instance['img_title'] ) .'" ';
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}
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if ( '' == $instance['caption'] ) {
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$output .= 'class="align' . esc_attr( $instance['align'] ) . '" ';
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}
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if ( '' != $instance['img_width'] ) {
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$output .= 'width="' . esc_attr( $instance['img_width'] ) .'" ';
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}
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if ( '' != $instance['img_height'] ) {
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$output .= 'height="' . esc_attr( $instance['img_height'] ) .'" ';
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}
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$output .= '/>';
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if ( '' != $instance['link'] && ! empty( $instance['link_target_blank'] ) ) {
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$output = '<a target="_blank" href="' . esc_attr( $instance['link'] ) . '">' . $output . '</a>';
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}
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if ( '' != $instance['link'] && empty( $instance['link_target_blank'] ) ) {
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$output = '<a href="' . esc_attr( $instance['link'] ) . '">' . $output . '</a>';
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}
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if ( '' != $instance['caption'] ) {
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/** This filter is documented in core/src/wp-includes/default-widgets.php */
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$caption = apply_filters( 'widget_text', $instance['caption'] );
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$img_width = ( ! empty( $instance['img_width'] ) ? 'style="width: ' . esc_attr( $instance['img_width'] ) .'px"' : '' );
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$output = '<figure ' . $img_width .' class="wp-caption align' . esc_attr( $instance['align'] ) . '">
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' . $output . '
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<figcaption class="wp-caption-text">' . $caption . '</figcaption>
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</figure>'; // wp_kses_post caption on update
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}
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echo '<div class="jetpack-image-container">' . do_shortcode( $output ) . '</div>';
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}
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echo "\n" . $args['after_widget'];
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}
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/**
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* Sanitize widget form values as they are saved.
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*
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* @see WP_Widget::update()
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*
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* @param array $new_instance Values just sent to be saved.
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* @param array $old_instance Previously saved values from database.
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*
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* @return array Updated safe values to be saved.
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*/
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public function update( $new_instance, $old_instance ) {
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$allowed_caption_html = array(
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'a' => array(
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'href' => array(),
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'title' => array(),
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),
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'b' => array(),
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'em' => array(),
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'i' => array(),
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'p' => array(),
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'strong' => array()
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);
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$instance = $old_instance;
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$instance['title'] = strip_tags( $new_instance['title'] );
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$instance['img_url'] = esc_url( $new_instance['img_url'], null, 'display' );
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$instance['alt_text'] = strip_tags( $new_instance['alt_text'] );
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$instance['img_title'] = strip_tags( $new_instance['img_title'] );
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$instance['caption'] = wp_kses( stripslashes($new_instance['caption'] ), $allowed_caption_html );
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$instance['align'] = $new_instance['align'];
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$instance['img_width'] = absint( $new_instance['img_width'] );
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$instance['img_height'] = absint( $new_instance['img_height'] );
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$instance['link'] = esc_url( $new_instance['link'], null, 'display' );
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$instance['link_target_blank'] = isset( $new_instance['link_target_blank'] ) ? (bool) $new_instance['link_target_blank'] : false;
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return $instance;
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}
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/**
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* Back-end widget form.
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*
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* @see WP_Widget::form()
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*
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* @param array $instance Previously saved values from database.
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*/
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public function form( $instance ) {
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// Defaults
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$instance = wp_parse_args( (array) $instance, array( 'title' => '', 'img_url' => '', 'alt_text' => '', 'img_title' => '', 'caption' => '', 'align' => 'none', 'img_width' => '', 'img_height' => '', 'link' => '', 'link_target_blank' => false ) );
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$title = esc_attr( $instance['title'] );
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$img_url = esc_url( $instance['img_url'], null, 'display' );
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$alt_text = esc_attr( $instance['alt_text'] );
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$img_title = esc_attr( $instance['img_title'] );
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$caption = esc_textarea( $instance['caption'] );
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$align = esc_attr( $instance['align'] );
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$img_width = esc_attr( $instance['img_width'] );
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$img_height = esc_attr( $instance['img_height'] );
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$link_target_blank = checked( $instance['link_target_blank'], true, false );
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if ( !empty( $instance['img_url'] ) ) {
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// Download the url to a local temp file and then process it with getimagesize so we can optimize browser layout
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$tmp_file = download_url( $instance['img_url'], 10 );
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if ( ! is_wp_error( $tmp_file ) ) {
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$size = getimagesize( $tmp_file );
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if ( '' == $instance['img_width'] ) {
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$width = $size[0];
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$img_width = $width;
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} else {
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$img_width = absint( $instance['img_width'] );
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}
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if ( '' == $instance['img_height'] ) {
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$height = $size[1];
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$img_height = $height;
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} else {
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$img_height = absint( $instance['img_height'] );
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}
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unlink( $tmp_file );
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}
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}
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$link = esc_url( $instance['link'], null, 'display' );
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echo '<p><label for="' . $this->get_field_id( 'title' ) . '">' . esc_html__( 'Widget title:', 'jetpack' ) . '
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<input class="widefat" id="' . $this->get_field_id( 'title' ) . '" name="' . $this->get_field_name( 'title' ) . '" type="text" value="' . $title . '" />
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</label></p>
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<p><label for="' . $this->get_field_id( 'img_url' ) . '">' . esc_html__( 'Image URL:', 'jetpack' ) . '
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<input class="widefat" id="' . $this->get_field_id( 'img_url' ) . '" name="' . $this->get_field_name( 'img_url' ) . '" type="text" value="' . $img_url . '" />
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</label></p>
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<p><label for="' . $this->get_field_id( 'alt_text' ) . '">' . esc_html__( 'Alternate text:', 'jetpack' ) . ' <a href="http://support.wordpress.com/widgets/image-widget/#image-widget-alt-text" target="_blank">( ? )</a>
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<input class="widefat" id="' . $this->get_field_id( 'alt_text' ) . '" name="' . $this->get_field_name( 'alt_text' ) . '" type="text" value="' . $alt_text . '" />
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</label></p>
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<p><label for="' . $this->get_field_id( 'img_title' ) . '">' . esc_html__( 'Image title:', 'jetpack' ) . ' <a href="http://support.wordpress.com/widgets/image-widget/#image-widget-title" target="_blank">( ? )</a>
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<input class="widefat" id="' . $this->get_field_id( 'img_title' ) . '" name="' . $this->get_field_name( 'img_title' ) . '" type="text" value="' . $img_title . '" />
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</label></p>
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<p><label for="' . $this->get_field_id( 'caption' ) . '">' . esc_html__( 'Caption:', 'jetpack' ) . ' <a href="http://support.wordpress.com/widgets/image-widget/#image-widget-caption" target="_blank">( ? )</a>
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<textarea class="widefat" id="' . $this->get_field_id( 'caption' ) . '" name="' . $this->get_field_name( 'caption' ) . '" rows="2" cols="20">' . $caption . '</textarea>
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</label></p>';
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$alignments = array(
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'none' => __( 'None', 'jetpack' ),
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'left' => __( 'Left', 'jetpack' ),
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'center' => __( 'Center', 'jetpack' ),
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'right' => __( 'Right', 'jetpack' ),
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);
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echo '<p><label for="' . $this->get_field_id( 'align' ) . '">' . esc_html__( 'Image Alignment:', 'jetpack' ) . '
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<select id="' . $this->get_field_id( 'align' ) . '" name="' . $this->get_field_name( 'align' ) . '">';
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foreach ( $alignments as $alignment => $alignment_name ) {
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echo '<option value="' . esc_attr( $alignment ) . '" ';
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if ( $alignment == $align )
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echo 'selected="selected" ';
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echo '>' . esc_html($alignment_name) . "</option>\n";
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}
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echo '</select></label></p>';
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echo '<p><label for="' . $this->get_field_id( 'img_width' ) . '">' . esc_html__( 'Width:', 'jetpack' ) . '
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<input size="3" id="' . $this->get_field_id( 'img_width' ) . '" name="' . $this->get_field_name( 'img_width' ) . '" type="text" value="' . $img_width . '" />
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</label>
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<label for="' . $this->get_field_id( 'img_height' ) . '">' . esc_html__( 'Height:', 'jetpack' ) . '
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<input size="3" id="' . $this->get_field_id( 'img_height' ) . '" name="' . $this->get_field_name( 'img_height' ) . '" type="text" value="' . $img_height . '" />
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</label><br />
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<small>' . esc_html__( "If empty, we will attempt to determine the image size.", 'jetpack' ) . '</small></p>
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<p><label for="' . $this->get_field_id( 'link' ) . '">' . esc_html__( 'Link URL (when the image is clicked):', 'jetpack' ) . '
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<input class="widefat" id="' . $this->get_field_id( 'link' ) . '" name="' . $this->get_field_name( 'link' ) . '" type="text" value="' . $link . '" />
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</label>
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<label for="' . $this->get_field_id( 'link_target_blank' ) . '">
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<input type="checkbox" name="' . $this->get_field_name( 'link_target_blank' ) . '" id="' . $this->get_field_id( 'link_target_blank' ) . '" value="1"' . $link_target_blank . '/>
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' . esc_html__( 'Open link in a new window/tab', 'jetpack' ) . '
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</label></p>';
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}
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} // Class Jetpack_Image_Widget
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