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<?php |
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/** |
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* |
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* FooGallery helper functions for rendering HTML |
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* Created by Brad Vincent |
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* Date: 11/07/2017 |
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* |
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* @since 1.4.0 |
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*/ |
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/** |
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* Returns the attachment image source only |
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* |
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* @param FooGalleryAttachment $foogallery_attachment |
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* @param array $args |
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* |
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* @since 1.4.0 |
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* |
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* @return string |
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*/ |
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function foogallery_attachment_html_image_src( $foogallery_attachment, $args = array() ) { |
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return apply_filters( 'foogallery_attachment_resize_thumbnail', $foogallery_attachment->url, $args, $foogallery_attachment ); |
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} |
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/** |
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* Returns the attachment img HTML |
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* |
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* @param FooGalleryAttachment $foogallery_attachment |
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* @param array $args |
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* |
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* @since 1.4.0 |
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* |
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* @return string |
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*/ |
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function foogallery_attachment_html_image( $foogallery_attachment, $args = array() ) { |
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$attr = foogallery_build_attachment_html_image_attributes( $foogallery_attachment, $args ); |
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$html = '<img '; |
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foreach ( $attr as $name => $value ) { |
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$name = str_replace(' ', '', $name); //ensure we have no spaces! |
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$html .= " $name=" . '"' . foogallery_esc_attr($value) . '"'; |
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} |
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$html .= ' />'; |
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return apply_filters( 'foogallery_attachment_html_image', $html, $args, $foogallery_attachment ); |
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} |
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/** |
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* Returns the attachment img HTML |
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* |
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* @param FooGalleryAttachment $foogallery_attachment |
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* @param array $args |
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* |
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* @since 1.4.9 |
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* |
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* @return array |
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*/ |
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function foogallery_build_attachment_html_image_attributes( $foogallery_attachment, $args = array() ) { |
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$attr['src'] = foogallery_attachment_html_image_src( $foogallery_attachment, $args ); |
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if ( ! empty( $foogallery_attachment->alt ) ) { |
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$attr['alt'] = $foogallery_attachment->alt; |
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} |
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if ( ! empty( $foogallery_attachment->caption ) ) { |
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$attr['title'] = $foogallery_attachment->caption; |
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} |
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//pull any custom attributes out the args |
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if ( isset( $args['image_attributes'] ) && is_array( $args['image_attributes'] ) ) { |
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$attr = array_merge( $attr, $args['image_attributes'] ); |
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} |
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//check for width and height args and add those to the image |
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if ( isset( $args['width'] ) && intval( $args['width'] ) > 0 ) { |
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$attr['width'] = $args['width']; |
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} |
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if ( isset( $args['height'] ) && intval( $args['height'] ) > 0 ) { |
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$attr['height'] = $args['height']; |
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} |
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$attr = apply_filters( 'foogallery_attachment_html_image_attributes', $attr, $args, $foogallery_attachment ); |
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if ( array_key_exists( 'class', $attr ) ) { |
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$attr['class'] .= ' fg-image'; |
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} else { |
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$attr['class'] = 'fg-image'; |
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} |
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return $attr; |
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} |
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/** |
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* Returns the attachment anchor HTML opening tag |
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* |
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* @param FooGalleryAttachment $foogallery_attachment |
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* @param array $args |
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* |
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* @since 1.4.0 |
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* |
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* @return string |
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*/ |
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function foogallery_attachment_html_anchor_opening( $foogallery_attachment, $args = array() ) { |
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$attr = foogallery_build_attachment_html_anchor_attributes( $foogallery_attachment, $args ); |
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$html = '<a '; |
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foreach ( $attr as $name => $value ) { |
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$name = str_replace(' ', '', $name); //ensure we have no spaces! |
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$html .= " $name=" . '"' . foogallery_esc_attr($value) . '"'; |
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} |
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$html .= '>'; |
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return apply_filters( 'foogallery_attachment_html_anchor_opening', $html, $args, $foogallery_attachment ); |
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} |
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/** |
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* Returns the array of attributes that will be used on the anchor for a FooGalleryAttachment |
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* |
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* @param FooGalleryAttachment $foogallery_attachment |
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* @param array $args |
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* |
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* @since 1.4.9 |
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* |
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* @return array |
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*/ |
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function foogallery_build_attachment_html_anchor_attributes( $foogallery_attachment, $args = array() ) { |
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$arg_defaults = array( |
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'link' => 'image', |
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'custom_link' => $foogallery_attachment->custom_url |
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); |
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$args = wp_parse_args( $args, $arg_defaults ); |
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$link = $args['link']; |
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if ( 'page' === $link ) { |
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//get the URL to the attachment page |
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$url = get_attachment_link( $foogallery_attachment->ID ); |
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} else if ( 'custom' === $link ) { |
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$url = $args['custom_link']; |
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} else { |
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$url = $foogallery_attachment->url; |
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} |
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//fallback for images that might not have a custom url |
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if ( empty( $url ) ) { |
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$url = $foogallery_attachment->url; |
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} |
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$attr = array(); |
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//only add href and target attributes to the anchor if the link is NOT set to 'none' |
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if ( $link !== 'none' ){ |
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$attr['href'] = $url; |
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if ( ! empty( $foogallery_attachment->custom_target ) && 'default' !== $foogallery_attachment->custom_target ) { |
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$attr['target'] = $foogallery_attachment->custom_target; |
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} |
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} |
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if ( ! empty( $foogallery_attachment->caption ) ) { |
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$attr['data-caption-title'] = $foogallery_attachment->caption; |
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} |
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if ( !empty( $foogallery_attachment->description ) ) { |
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$attr['data-caption-desc'] = $foogallery_attachment->description; |
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} |
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$attr['data-attachment-id'] = $foogallery_attachment->ID; |
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//pull any custom attributes out the args |
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if ( isset( $args['link_attributes'] ) && is_array( $args['link_attributes'] ) ) { |
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$attr = array_merge( $attr, $args['link_attributes'] ); |
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} |
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$attr = apply_filters( 'foogallery_attachment_html_link_attributes', $attr, $args, $foogallery_attachment ); |
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//always add the fg-thumb class |
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if ( array_key_exists( 'class', $attr ) ) { |
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$attr['class'] .= ' fg-thumb'; |
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} else { |
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$attr['class'] = 'fg-thumb'; |
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} |
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return $attr; |
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} |
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/** |
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* Returns the attachment anchor HTML |
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* |
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* @param FooGalleryAttachment $foogallery_attachment |
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* @param array $args |
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* @param bool $output_image |
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* @param bool $output_closing_tag |
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* |
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* @since 1.4.0 |
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* |
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* @return string |
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*/ |
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function foogallery_attachment_html_anchor( $foogallery_attachment, $args = array(), $output_image = true, $output_closing_tag = true ) { |
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if ( empty ( $foogallery_attachment->url ) ) { |
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return ''; |
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} |
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$html = foogallery_attachment_html_anchor_opening( $foogallery_attachment, $args ); |
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if ( $output_image ) { |
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$html .= foogallery_attachment_html_image( $foogallery_attachment, $args );; |
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} |
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if ( $output_closing_tag ) { |
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$html .= '</a>'; |
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} |
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return apply_filters( 'foogallery_attachment_html_anchor', $html, $args, $foogallery_attachment ); |
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} |
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/** |
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* Builds up the captions for an attachment |
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* |
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* @param FooGalleryAttachment $foogallery_attachment |
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* @param array $args |
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* |
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* @since 1.4.9 |
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* |
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* @return array|bool |
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*/ |
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function foogallery_build_attachment_html_caption( $foogallery_attachment, $args = array() ) { |
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$captions = array(); |
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$preset = foogallery_gallery_template_setting( 'caption_preset', 'fg-custom' ); |
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if ( 'none' !== $preset ) { |
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$caption_html = array(); |
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$show_caption_title = false; |
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$show_caption_desc = false; |
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//check if we have provided overrides for the caption title |
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if ( isset( $args['override_caption_title'] ) ) { |
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$caption_title = $args['override_caption_title']; |
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$show_caption_title = true; |
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} else { |
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$caption_title_source = foogallery_gallery_template_setting( 'caption_title_source', '' ); |
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//if we need to use the settings, then make sure our source is false |
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if ( empty( $caption_title_source ) ) { $caption_title_source = false; } |
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if ( 'fg-custom' === $preset ) { |
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$show_caption_title = $caption_title_source !== 'none'; |
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} else { |
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//always show both title and desc for the presets |
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$show_caption_title = true; |
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} |
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//get the correct captions |
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$caption_title = foogallery_get_caption_title_for_attachment( $foogallery_attachment->_post, $caption_title_source ); |
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} |
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//check if we have provided overrides for the caption description |
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if ( isset( $args['override_caption_desc'] ) ) { |
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$caption_desc = $args['override_caption_desc']; |
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$show_caption_desc = true; |
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} else { |
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$caption_desc_source = foogallery_gallery_template_setting( 'caption_desc_source', '' ); |
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//if we need to use the settings, then make sure our source is false |
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if ( empty( $caption_desc_source ) ) { $caption_desc_source = false; } |
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if ( 'fg-custom' === $preset ) { |
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$show_caption_desc = $caption_desc_source !== 'none'; |
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} else { |
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//always show both title and desc for the presets |
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$show_caption_desc = true; |
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} |
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$caption_desc = foogallery_get_caption_desc_for_attachment( $foogallery_attachment->_post, $caption_desc_source ); |
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} |
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if ( $caption_title && $show_caption_title ) { |
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$captions['title'] = $caption_title; |
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} |
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if ( $caption_desc && $show_caption_desc ) { |
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$captions['desc'] = $caption_desc; |
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} |
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} else { |
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$captions = false; |
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} |
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return apply_filters( 'foogallery_build_attachment_html_caption', $captions, $foogallery_attachment, $args ); |
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} |
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/** |
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* Returns generic html for captions |
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* |
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* @param FooGalleryAttachment $foogallery_attachment |
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* @param array $args |
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* |
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* @since 1.4.0 |
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* |
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* @return string |
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*/ |
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function foogallery_attachment_html_caption( $foogallery_attachment, $args = array() ) { |
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$captions = foogallery_build_attachment_html_caption( $foogallery_attachment, $args ); |
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$html = ''; |
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if ( $captions !== false ) { |
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$html = '<figcaption class="fg-caption"><div class="fg-caption-inner">'; |
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if ( array_key_exists( 'title', $captions ) ) { |
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$html .= '<div class="fg-caption-title">' . $captions['title'] . '</div>'; |
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} |
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if ( array_key_exists( 'desc', $captions ) ) { |
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$html .= '<div class="fg-caption-desc">' . $captions['desc'] . '</div>'; |
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} |
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$html .= '</div></figcaption>'; |
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} |
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return apply_filters( 'foogallery_attachment_html_caption', $html, $foogallery_attachment, $args ); |
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} |
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/** |
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* Returns the attachment item opening HTML |
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* |
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* @param FooGalleryAttachment $foogallery_attachment |
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* @param array $args |
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* |
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* @since 1.4.0 |
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* |
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* @return string |
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*/ |
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function foogallery_attachment_html_item_opening($foogallery_attachment, $args = array() ) { |
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$classes[] = 'fg-item'; |
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$classes = apply_filters( 'foogallery_attachment_html_item_classes', $classes, $foogallery_attachment, $args ); |
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$class_list = ''; |
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if ( is_array( $classes ) ) { |
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$class_list = implode( ' ', $classes ); |
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} |
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$attachment_item_figure_class = apply_filters( 'foogallery_attachment_html_item_figure_class', 'fg-item-inner', $foogallery_attachment, $args ); |
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$html = '<div class="' . $class_list . '"><figure class="'. esc_attr( $attachment_item_figure_class ) . '">'; |
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return apply_filters( 'foogallery_attachment_html_item_opening', $html, $foogallery_attachment, $args ); |
346
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} |
347
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348
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/** |
349
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* Returns generic html for an attachment |
350
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* |
351
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* @param FooGalleryAttachment $foogallery_attachment |
352
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* @param array $args |
353
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* |
354
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* @since 1.4.0 |
355
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* |
356
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* @return string |
357
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*/ |
358
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function foogallery_attachment_html( $foogallery_attachment, $args = array() ) { |
359
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360
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//check if no arguments were passed in, and build them up if so |
361
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if ( empty( $args ) ) { |
362
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$args = foogallery_gallery_template_arguments(); |
363
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} |
364
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365
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$html = foogallery_attachment_html_item_opening( $foogallery_attachment, $args ); |
366
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$html .= foogallery_attachment_html_anchor_opening( $foogallery_attachment, $args ); |
367
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$html .= foogallery_attachment_html_image( $foogallery_attachment, $args ); |
368
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$html .= '</a>'; |
369
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$html .= foogallery_attachment_html_caption( $foogallery_attachment, $args ); |
370
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$html .= '</figure></div>'; |
371
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return $html; |
372
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} |
373
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374
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/** |
375
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* Get the foogallery template arguments for the current foogallery that is being output to the frontend |
376
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* |
377
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* @return array |
378
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|
|
*/ |
379
|
|
|
function foogallery_gallery_template_arguments() { |
380
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|
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global $current_foogallery_template; |
|
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381
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382
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return apply_filters( 'foogallery_gallery_template_arguments-' . $current_foogallery_template, array() ); |
383
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|
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} |
384
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385
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|
/** |
386
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|
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* Build up an object that will be encoded to JSON for a FooGallery Attachment |
387
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* |
388
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|
|
* @param FooGalleryAttachment $foogallery_attachment |
389
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|
|
* @param array $args |
390
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|
|
* |
391
|
|
|
* @since 1.6.0 |
392
|
|
|
* |
393
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|
|
* @returns string |
394
|
|
|
* @return string |
395
|
|
|
*/ |
396
|
|
|
function foogallery_build_json_object_from_attachment( $foogallery_attachment, $args = array() ) { |
397
|
|
|
if ( isset( $foogallery_attachment ) ) { |
398
|
|
|
|
399
|
|
|
//check if no arguments were passed in, and build them up if so |
400
|
|
|
if ( empty( $args ) ) { |
401
|
|
|
$args = foogallery_gallery_template_arguments(); |
402
|
|
|
} |
403
|
|
|
|
404
|
|
|
$anchor_attributes = foogallery_build_attachment_html_anchor_attributes( $foogallery_attachment, $args ); |
405
|
|
|
$image_attributes = foogallery_build_attachment_html_image_attributes( $foogallery_attachment, $args ); |
406
|
|
|
$captions = foogallery_build_attachment_html_caption( $foogallery_attachment, $args ); |
407
|
|
|
|
408
|
|
|
if ( array_key_exists( 'src', $image_attributes ) ) { |
409
|
|
|
$src = $image_attributes['src']; |
410
|
|
|
} else if ( array_key_exists( 'data-src-fg', $image_attributes ) ) { |
411
|
|
|
$src = $image_attributes['data-src-fg']; |
412
|
|
|
} |
413
|
|
|
|
414
|
|
|
if ( array_key_exists( 'srcset', $image_attributes ) ) { |
415
|
|
|
$srcset = $image_attributes['srcset']; |
416
|
|
|
} else if ( array_key_exists( 'data-srcset-fg', $image_attributes ) ) { |
417
|
|
|
$srcset = $image_attributes['data-srcset-fg']; |
418
|
|
|
} |
419
|
|
|
|
420
|
|
|
$json_object = new stdClass(); |
421
|
|
|
$json_object->href = $anchor_attributes['href']; |
422
|
|
|
if ( isset( $src ) ) { |
423
|
|
|
$json_object->src = $src; |
424
|
|
|
} |
425
|
|
|
if ( isset( $srcset ) ) { |
426
|
|
|
$json_object->srcset = $srcset; |
427
|
|
|
} |
428
|
|
|
if ( array_key_exists( 'width', $image_attributes ) ) { |
429
|
|
|
$json_object->width = $image_attributes['width']; |
430
|
|
|
} |
431
|
|
|
if ( array_key_exists( 'height', $image_attributes ) ) { |
432
|
|
|
$json_object->height = $image_attributes['height']; |
433
|
|
|
} |
434
|
|
|
|
435
|
|
|
$json_object->alt = $foogallery_attachment->alt; |
436
|
|
|
|
437
|
|
|
$json_object_attr_anchor = new stdClass(); |
438
|
|
|
$json_object_attr_anchor->{'data-attachment-id'} = $foogallery_attachment->ID; |
439
|
|
|
|
440
|
|
|
if ( $captions !== false ) { |
441
|
|
|
if ( array_key_exists( 'title', $captions ) ) { |
442
|
|
|
$json_object->caption = $json_object->title = $json_object_attr_anchor->{'data-caption-title'} = $captions['title']; |
443
|
|
|
} |
444
|
|
|
if ( array_key_exists( 'desc', $captions ) ) { |
445
|
|
|
$json_object->description = $json_object_attr_anchor->{'data-caption-desc'} = $captions['desc']; |
446
|
|
|
} |
447
|
|
|
} |
448
|
|
|
|
449
|
|
|
$json_object->attr = new stdClass(); |
450
|
|
|
$json_object->attr->anchor = $json_object_attr_anchor; |
451
|
|
|
|
452
|
|
|
$json_object = apply_filters( 'foogallery_build_attachment_json', $json_object, $foogallery_attachment, $args, $anchor_attributes, $image_attributes, $captions ); |
453
|
|
|
|
454
|
|
|
return $json_object; |
455
|
|
|
} |
456
|
|
|
|
457
|
|
|
return false; |
458
|
|
|
} |
459
|
|
|
|
460
|
|
|
/** |
461
|
|
|
* Build up a JSON string for a FooGallery Attachment |
462
|
|
|
* |
463
|
|
|
* @param FooGalleryAttachment $foogallery_attachment |
464
|
|
|
* @param array $args |
465
|
|
|
* |
466
|
|
|
* @since 1.4.9 |
467
|
|
|
* |
468
|
|
|
* @returns string |
469
|
|
|
* @return string |
470
|
|
|
*/ |
471
|
|
|
function foogallery_build_json_from_attachment( $foogallery_attachment, $args = array() ) { |
472
|
|
|
if ( isset( $foogallery_attachment ) ) { |
473
|
|
|
|
474
|
|
|
$json_object = foogallery_build_json_object_from_attachment( $foogallery_attachment, $args ); |
475
|
|
|
|
476
|
|
|
if ( defined( 'JSON_UNESCAPED_UNICODE' ) ) { |
477
|
|
|
return json_encode( $json_object, JSON_UNESCAPED_UNICODE ); |
478
|
|
|
} else { |
479
|
|
|
return json_encode( $json_object ); |
480
|
|
|
} |
481
|
|
|
} |
482
|
|
|
|
483
|
|
|
return ''; |
484
|
|
|
} |
485
|
|
|
|
486
|
|
|
|
Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code.
Let’s take a look at an example:
As you can see in this example, the array
$myArray
is initialized the first time when the foreach loop is entered. You can also see that the value of thebar
key is only written conditionally; thus, its value might result from a previous iteration.This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.