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<?php
/**
*
* FooGallery helper functions for rendering HTML
* Created by Brad Vincent
* Date: 11/07/2017
*
* @since 1.4.0
*/
/**
* Returns the attachment image source only
*
* @param FooGalleryAttachment $foogallery_attachment
* @param array $args
*
* @since 1.4.0
*
* @return string
*/
function foogallery_attachment_html_image_src( $foogallery_attachment, $args = array() ) {
return apply_filters( 'foogallery_attachment_resize_thumbnail', $foogallery_attachment->url, $args, $foogallery_attachment );
}
/**
* Returns the attachment img HTML
*
* @param FooGalleryAttachment $foogallery_attachment
* @param array $args
*
* @since 1.4.0
*
* @return string
*/
function foogallery_attachment_html_image( $foogallery_attachment, $args = array() ) {
$attr = foogallery_build_attachment_html_image_attributes( $foogallery_attachment, $args );
$html = foogallery_html_opening_tag( 'img', $attr );
return apply_filters( 'foogallery_attachment_html_image', $html, $args, $foogallery_attachment );
}
/**
* Returns the attachment img HTML
*
* @param FooGalleryAttachment $foogallery_attachment
* @param array $args
*
* @since 1.4.9
*
* @return array
*/
function foogallery_build_attachment_html_image_attributes( $foogallery_attachment, $args = array() ) {
$attr['src'] = foogallery_process_image_url( foogallery_attachment_html_image_src( $foogallery_attachment, $args ) );
if ( ! empty( $foogallery_attachment->alt ) ) {
$attr['alt'] = $foogallery_attachment->alt;
}
if ( ! empty( $foogallery_attachment->caption ) ) {
$attr['title'] = $foogallery_attachment->caption;
}
//pull any custom attributes out the args
if ( isset( $args['image_attributes'] ) && is_array( $args['image_attributes'] ) ) {
$attr = array_merge( $attr, $args['image_attributes'] );
}
//check for width and height args and add those to the image
if ( isset( $args['width'] ) && intval( $args['width'] ) > 0 ) {
$attr['width'] = $args['width'];
}
if ( isset( $args['height'] ) && intval( $args['height'] ) > 0 ) {
$attr['height'] = $args['height'];
}
$attr = apply_filters( 'foogallery_attachment_html_image_attributes', $attr, $args, $foogallery_attachment );
if ( array_key_exists( 'class', $attr ) ) {
$attr['class'] .= ' fg-image';
} else {
$attr['class'] = 'fg-image';
}
// Always output the loading attribute on the img tags.
$attr['loading'] = 'eager';
return $attr;
}
/**
* Returns the attachment anchor HTML opening tag
*
* @param FooGalleryAttachment $foogallery_attachment
* @param array $args
*
* @since 1.4.0
*
* @return string
*/
function foogallery_attachment_html_anchor_opening( $foogallery_attachment, $args = array() ) {
$attr = foogallery_build_attachment_html_anchor_attributes( $foogallery_attachment, $args );
$html = foogallery_html_opening_tag( 'a', $attr );
return apply_filters( 'foogallery_attachment_html_anchor_opening', $html, $args, $foogallery_attachment );
}
/**
* Returns the array of attributes that will be used on the anchor for a FooGalleryAttachment
*
* @param FooGalleryAttachment $foogallery_attachment
* @param array $args
*
* @since 1.4.9
*
* @return array
*/
function foogallery_build_attachment_html_anchor_attributes( $foogallery_attachment, $args = array() ) {
$arg_defaults = array(
'link' => 'image',
'custom_link' => $foogallery_attachment->custom_url
);
$args = wp_parse_args( $args, $arg_defaults );
$link = $args['link'];
if ( 'page' === $link ) {
// get the URL to the attachment page.
$url = get_attachment_link( $foogallery_attachment->ID );
} elseif ( 'custom' === $link ) {
$url = $args['custom_link'];
} else {
$url = $foogallery_attachment->url;
}
// fallback for images that might not have a custom url.
if ( empty( $url ) ) {
$url = $foogallery_attachment->url;
}
$attr = array();
// only add href and target attributes to the anchor if the link is NOT set to 'none'.
if ( 'none' !== $link ) {
$attr['href'] = foogallery_process_image_url( $url );
if ( ! empty( $foogallery_attachment->custom_target ) && 'default' !== $foogallery_attachment->custom_target ) {
$attr['target'] = $foogallery_attachment->custom_target;
}
}
if ( ! empty( $foogallery_attachment->caption ) ) {
$attr['data-caption-title'] = foogallery_sanitize_html( $foogallery_attachment->caption );
}
if ( ! empty( $foogallery_attachment->description ) ) {
$attr['data-caption-desc'] = foogallery_sanitize_html( $foogallery_attachment->description );
}
if ( isset( $foogallery_attachment->caption_title ) ) {
$attr['data-caption-title'] = foogallery_sanitize_html( $foogallery_attachment->caption_title );
}
if ( isset( $foogallery_attachment->caption_desc ) ) {
$attr['data-caption-desc'] = foogallery_sanitize_html( $foogallery_attachment->caption_desc );
}
// set the ID attribute for the attachment.
if ( $foogallery_attachment->ID > 0 ) {
$attribute_key = foogallery_get_setting( 'attachment_id_attribute', 'data-attachment-id' );
$attr[ $attribute_key ] = $foogallery_attachment->ID;
}
// pull any custom attributes out the args.
if ( isset( $args['link_attributes'] ) && is_array( $args['link_attributes'] ) ) {
$attr = array_merge( $attr, $args['link_attributes'] );
}
$attr = apply_filters( 'foogallery_attachment_html_link_attributes', $attr, $args, $foogallery_attachment );
// always add the fg-thumb class.
if ( array_key_exists( 'class', $attr ) && ! empty( $attr['class'] ) ) {
$attr['class'] .= ' fg-thumb';
} else {
$attr['class'] = 'fg-thumb';
}
return $attr;
}
/**
* Returns the attachment anchor HTML
*
* @param FooGalleryAttachment $foogallery_attachment
* @param array $args
* @param bool $output_image
* @param bool $output_closing_tag
*
* @since 1.4.0
*
* @return string
*/
function foogallery_attachment_html_anchor( $foogallery_attachment, $args = array(), $output_image = true, $output_closing_tag = true ) {
if ( empty ( $foogallery_attachment->url ) ) {
return '';
}
$html = foogallery_attachment_html_anchor_opening( $foogallery_attachment, $args );
if ( $output_image ) {
$html .= foogallery_attachment_html_image( $foogallery_attachment, $args );;
}
if ( $output_closing_tag ) {
$html .= '</a>';
}
return apply_filters( 'foogallery_attachment_html_anchor', $html, $args, $foogallery_attachment );
}
/**
* Builds up the captions for an attachment
*
* @param FooGalleryAttachment $foogallery_attachment
* @param array $args
*
* @since 1.4.9
*
* @return array|bool
*/
function foogallery_build_attachment_html_caption( &$foogallery_attachment, $args = array() ) {
//allow for custom captions to be set
$captions = apply_filters( 'foogallery_build_attachment_html_caption_custom', false, $foogallery_attachment, $args);
if ( false === $captions ) {
$captions = array();
$preset = foogallery_gallery_template_setting( 'caption_preset', 'fg-custom' );
if ( 'none' !== $preset ) {
$show_caption_title = false;
$show_caption_desc = false;
$caption_title_source = foogallery_gallery_template_setting( 'caption_title_source', '' );
//if we need to use the settings, then make sure our source is false
if ( empty( $caption_title_source ) ) {
$caption_title_source = false;
}
if ( 'fg-custom' === $preset ) {
$show_caption_title = $caption_title_source !== 'none';
} else {
//always show both title and desc for the presets
$show_caption_title = true;
}
//get the correct captions
if ( $foogallery_attachment->_post ) {
$caption_title = foogallery_get_caption_title_for_attachment($foogallery_attachment->_post, $caption_title_source);
} else {
$caption_title = foogallery_get_caption_by_source($foogallery_attachment, $caption_title_source, 'title');
}
$caption_desc_source = foogallery_gallery_template_setting('caption_desc_source', '');
//if we need to use the settings, then make sure our source is false
if ( empty( $caption_desc_source ) ) {
$caption_desc_source = false;
}
if ( 'fg-custom' === $preset ) {
$show_caption_desc = $caption_desc_source !== 'none';
} else {
//always show both title and desc for the presets
$show_caption_desc = true;
}
if ( $foogallery_attachment->_post ) {
$caption_desc = foogallery_get_caption_desc_for_attachment($foogallery_attachment->_post, $caption_desc_source);
} else {
$caption_desc = foogallery_get_caption_by_source( $foogallery_attachment, $caption_desc_source, 'desc' );
}
if ( $caption_title && $show_caption_title ) {
$captions['title'] = $foogallery_attachment->caption_title = $caption_title;
}
if ( $caption_desc && $show_caption_desc ) {
$captions['desc'] = $foogallery_attachment->caption_desc = $caption_desc;
}
} else {
$captions = false;
}
}
//extra sanitization for HTML captions
if ( isset( $args['override_caption_title'] ) ) {
$captions['override_title'] = foogallery_sanitize_html( $args['override_caption_title'] );
}
if ( isset( $args['override_caption_desc']) ) {
$captions['override_desc'] = foogallery_sanitize_html( $args['override_caption_desc'] );
}
//extra sanitization for HTML captions
if ( !empty( $captions['title']) ) {
$captions['title'] = foogallery_sanitize_html( $captions['title'] );
}
if ( !empty( $captions['desc']) ) {
$captions['desc'] = foogallery_sanitize_html( $captions['desc'] );
}
return apply_filters( 'foogallery_build_attachment_html_caption', $captions, $foogallery_attachment, $args );
}
/**
* Returns generic html for captions
*
* @param FooGalleryAttachment $foogallery_attachment
* @param array $args
*
* @since 1.4.0
*
* @return string
*/
function foogallery_attachment_html_caption( $foogallery_attachment, $args = array() ) {
$captions = foogallery_build_attachment_html_caption( $foogallery_attachment, $args );
$html = '';
if ( $captions !== false ) {
$caption_title = null;
$caption_desc = null;
$html = '<figcaption class="fg-caption"><div class="fg-caption-inner">';
if ( array_key_exists( 'override_title', $captions ) ) {
$caption_title = $captions['override_title'];
} else if ( array_key_exists( 'title', $captions ) ) {
$caption_title = $captions['title'];
}
if ( array_key_exists( 'override_desc', $captions ) ) {
$caption_desc = $captions['override_desc'];
} else if ( array_key_exists( 'desc', $captions ) ) {
$caption_desc = $captions['desc'];
}
if ( !empty( $caption_title ) ) {
$html .= '<div class="fg-caption-title">' . $caption_title . '</div>';
}
if ( !empty( $caption_desc ) ) {
$html .= '<div class="fg-caption-desc">' . $caption_desc . '</div>';
}
$html .= '</div></figcaption>';
}
return apply_filters( 'foogallery_attachment_html_caption', $html, $foogallery_attachment, $args );
}
/**
* Returns the attachment item opening HTML
*
* @param FooGalleryAttachment $foogallery_attachment
* @param array $args
*
* @since 1.4.0
*
* @return string
*/
function foogallery_attachment_html_item_opening($foogallery_attachment, $args = array() ) {
$classes[] = 'fg-item';
//set the type of an item
$classes['type'] = 'fg-type-' . $foogallery_attachment->type;
//let others add to the item classes
$classes = apply_filters( 'foogallery_attachment_html_item_classes', $classes, $foogallery_attachment, $args );
$class_list = '';
if ( is_array( $classes ) ) {
$class_list = implode( ' ', $classes );
}
$attachment_item_figure_class = apply_filters( 'foogallery_attachment_html_item_figure_class', 'fg-item-inner', $foogallery_attachment, $args );
$html = '<div class="' . $class_list . '"><figure class="'. esc_attr( $attachment_item_figure_class ) . '">';
return apply_filters( 'foogallery_attachment_html_item_opening', $html, $foogallery_attachment, $args );
}
/**
* Returns generic html for an attachment
*
* @param FooGalleryAttachment $foogallery_attachment
* @param array $args
*
* @since 1.4.0
*
* @return string
*/
function foogallery_attachment_html( $foogallery_attachment, $args = array() ) {
//check if no arguments were passed in, and build them up if so
if ( empty( $args ) ) {
$args = foogallery_gallery_template_arguments();
}
//allow width and height arguments to be overridden
$override_width = foogallery_gallery_template_setting( 'override_width', false );
if ( $override_width !== false && intval( $override_width ) > 0 ) {
$args['width'] = $override_width;
}
$override_height = foogallery_gallery_template_setting( 'override_height', false );
if ( $override_height !== false && intval( $override_height ) > 0 ) {
$args['height'] = $override_height;
}
$caption = foogallery_attachment_html_caption( $foogallery_attachment, $args );
$html = foogallery_attachment_html_item_opening( $foogallery_attachment, $args );
$html .= foogallery_attachment_html_anchor_opening( $foogallery_attachment, $args );
$html .= '<span class="fg-image-wrap">';
$html .= foogallery_attachment_html_image( $foogallery_attachment, $args );
$html .= '</span>';
$html .= '<span class="fg-image-overlay"></span>';
$html .= '</a>';
$html .= $caption;
$html .= '</figure><div class="fg-loader"></div></div>';
return $html;
}
/**
* Get the foogallery template arguments for the current foogallery that is being output to the frontend
*
* @return array
*/
function foogallery_gallery_template_arguments() {
global $current_foogallery_template;
return apply_filters( 'foogallery_gallery_template_arguments-' . $current_foogallery_template, array() );
}
/**
* Build up an object that will be encoded to JSON for a FooGallery Attachment
*
* @param FooGalleryAttachment $foogallery_attachment
* @param array $args
*
* @since 1.6.0
*
* @returns string
* @return string
*/
function foogallery_build_json_object_from_attachment( $foogallery_attachment, $args = array() ) {
if ( isset( $foogallery_attachment ) ) {
//check if no arguments were passed in, and build them up if so
if ( empty( $args ) ) {
$args = foogallery_gallery_template_arguments();
}
$captions = foogallery_build_attachment_html_caption( $foogallery_attachment, $args );
$anchor_attributes = foogallery_build_attachment_html_anchor_attributes( $foogallery_attachment, $args );
$image_attributes = foogallery_build_attachment_html_image_attributes( $foogallery_attachment, $args );
if ( array_key_exists( 'data-src-fg', $image_attributes ) ) {
$src = $image_attributes['data-src-fg'];
} else if (array_key_exists( 'src', $image_attributes ) ) {
$src = $image_attributes['src'];
}
if ( array_key_exists( 'data-srcset-fg', $image_attributes ) ) {
$srcset = $image_attributes['data-srcset-fg'];
} else if ( array_key_exists( 'srcset', $image_attributes ) ) {
$srcset = $image_attributes['srcset'];
}
$json_object = new stdClass();
if ( array_key_exists( 'href', $anchor_attributes ) ) {
$json_object->href = $anchor_attributes['href'];
}
if ( array_key_exists( 'data-type', $anchor_attributes ) ) {
$json_object->type = $anchor_attributes['data-type'];
}
if ( isset( $src ) ) {
$json_object->src = $src;
}
if ( isset( $srcset ) ) {
$json_object->srcset = $srcset;
}
if ( array_key_exists( 'width', $image_attributes ) ) {
$json_object->width = $image_attributes['width'];
}
if ( array_key_exists( 'height', $image_attributes ) ) {
$json_object->height = $image_attributes['height'];
}
$json_object->alt = $foogallery_attachment->alt;
if ( $foogallery_attachment->ID > 0 ) {
$json_object->id = $foogallery_attachment->ID;
}
if ( $captions !== false ) {
if ( array_key_exists( 'title', $captions ) ) {
$json_object->caption = $json_object->title = $captions['title'];
}
if ( array_key_exists( 'desc', $captions ) ) {
$json_object->description = $captions['desc'];
}
}
$json_object->attr = new stdClass();
$json_object->attr->anchor = foogallery_create_anchor_for_json_object( $anchor_attributes );
$json_object = apply_filters( 'foogallery_build_attachment_json', $json_object, $foogallery_attachment, $args, $anchor_attributes, $image_attributes, $captions );
return $json_object;
}
return false;
}
/**
* Build up the anchor object that is used within the json object
*
* @param $anchor_attributes
*
* @return stdClass
*/
function foogallery_create_anchor_for_json_object( $anchor_attributes ) {
//unset a number of keys in the array that are already set on the high-level item
unset( $anchor_attributes['href'] );
unset( $anchor_attributes['data-type'] );
//create the anchor object
$object = new stdClass();
//loop through the anchor attributes and set them on the object
foreach ( $anchor_attributes as $key => $value ) {
$object->{$key} = $value;
}
return $object;
}
/**
* Build up a JSON string for a FooGallery Attachment
*
* @param FooGalleryAttachment $foogallery_attachment
* @param array $args
*
* @since 1.4.9
*
* @returns string
* @return string
*/
function foogallery_build_json_from_attachment( $foogallery_attachment, $args = array() ) {
if ( isset( $foogallery_attachment ) ) {
$json_object = foogallery_build_json_object_from_attachment( $foogallery_attachment, $args );
return foogallery_json_encode( $json_object );
}
return '';
}
/**
* Renders a script block with the JSON output for the attachments in a gallery
*
* @param $gallery FooGallery
* @param $attachments FooGalleryAttachment[]
*/
function foogallery_render_script_block_for_json_items( $gallery, $attachments ) {
if ( count( $attachments ) > 0 ) {
$attachments_json = array_map( 'foogallery_build_json_from_attachment', $attachments );
echo '<script type="text/javascript">';
echo ' window["' . $gallery->container_id() . '_items"] = [';
echo implode( ', ', $attachments_json );
echo ' ];';
echo '</script>';
}
}
/**
* Generates the HTML for a tag
*
* @param $tag
* @param $attributes
*
* @return string
*/
function foogallery_html_opening_tag( $tag, $attributes ) {
$html = '<' . $tag;
foreach ( $attributes as $name => $value ) {
if ( empty( $name ) || empty( $value ) ) continue;
$name = str_replace(' ', '', $name); //ensure we have no spaces!
$html .= " $name=" . '"' . foogallery_esc_attr($value) . '"';
}
$html .= '>';
return $html;
}