492 lines
10 KiB
PHP
492 lines
10 KiB
PHP
<?php
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/*
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* ACF Image Field Class
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*
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* All the logic for this field type
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*
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* @class acf_field_image
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* @extends acf_field
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* @package ACF
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* @subpackage Fields
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*/
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if( ! class_exists('acf_field_image') ) :
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class acf_field_image extends acf_field {
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/*
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* __construct
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*
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* This function will setup the field type data
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*
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* @type function
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* @date 5/03/2014
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* @since 5.0.0
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*
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* @param n/a
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* @return n/a
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*/
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function __construct() {
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// vars
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$this->name = 'image';
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$this->label = __("Image",'acf');
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$this->category = 'content';
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$this->defaults = array(
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'return_format' => 'array',
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'preview_size' => 'thumbnail',
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'library' => 'all',
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'min_width' => 0,
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'min_height' => 0,
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'min_size' => 0,
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'max_width' => 0,
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'max_height' => 0,
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'max_size' => 0,
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'mime_types' => ''
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);
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$this->l10n = array(
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'select' => __("Select Image",'acf'),
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'edit' => __("Edit Image",'acf'),
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'update' => __("Update Image",'acf'),
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'uploadedTo' => __("Uploaded to this post",'acf'),
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'all' => __("All images",'acf'),
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);
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// filters
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add_filter('get_media_item_args', array($this, 'get_media_item_args'));
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add_filter('wp_prepare_attachment_for_js', array($this, 'wp_prepare_attachment_for_js'), 10, 3);
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// do not delete!
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parent::__construct();
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}
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/*
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* render_field()
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*
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* Create the HTML interface for your field
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*
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* @param $field - an array holding all the field's data
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*
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* @type action
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* @since 3.6
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* @date 23/01/13
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*/
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function render_field( $field ) {
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// vars
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$uploader = acf_get_setting('uploader');
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// enqueue
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if( $uploader == 'wp' ) {
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acf_enqueue_uploader();
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}
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// vars
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$url = '';
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$alt = '';
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$div = array(
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'class' => 'acf-image-uploader acf-cf',
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'data-preview_size' => $field['preview_size'],
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'data-library' => $field['library'],
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'data-mime_types' => $field['mime_types'],
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'data-uploader' => $uploader
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);
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// has value?
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if( $field['value'] ) {
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// update vars
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$url = wp_get_attachment_image_src($field['value'], $field['preview_size']);
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$alt = get_post_meta($field['value'], '_wp_attachment_image_alt', true);
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// url exists
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if( $url ) $url = $url[0];
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// url exists
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if( $url ) {
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$div['class'] .= ' has-value';
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}
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}
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// get size of preview value
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$size = acf_get_image_size($field['preview_size']);
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?>
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<div <?php acf_esc_attr_e( $div ); ?>>
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<div class="acf-hidden">
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<?php acf_hidden_input(array( 'name' => $field['name'], 'value' => $field['value'] )); ?>
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</div>
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<div class="view show-if-value acf-soh" <?php if( $size['width'] ) echo 'style="max-width: '.$size['width'].'px"'; ?>>
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<img data-name="image" src="<?php echo $url; ?>" alt="<?php echo $alt; ?>"/>
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<ul class="acf-hl acf-soh-target">
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<?php if( $uploader != 'basic' ): ?>
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<li><a class="acf-icon -pencil dark" data-name="edit" href="#" title="<?php _e('Edit', 'acf'); ?>"></a></li>
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<?php endif; ?>
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<li><a class="acf-icon -cancel dark" data-name="remove" href="#" title="<?php _e('Remove', 'acf'); ?>"></a></li>
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</ul>
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</div>
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<div class="view hide-if-value">
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<?php if( $uploader == 'basic' ): ?>
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<?php if( $field['value'] && !is_numeric($field['value']) ): ?>
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<div class="acf-error-message"><p><?php echo $field['value']; ?></p></div>
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<?php endif; ?>
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<input type="file" name="<?php echo $field['name']; ?>" id="<?php echo $field['id']; ?>" />
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<?php else: ?>
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<p style="margin:0;"><?php _e('No image selected','acf'); ?> <a data-name="add" class="acf-button button" href="#"><?php _e('Add Image','acf'); ?></a></p>
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<?php endif; ?>
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</div>
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</div>
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<?php
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}
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/*
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* render_field_settings()
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*
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* Create extra options for your field. This is rendered when editing a field.
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* The value of $field['name'] can be used (like bellow) to save extra data to the $field
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*
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* @type action
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* @since 3.6
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* @date 23/01/13
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*
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* @param $field - an array holding all the field's data
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*/
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function render_field_settings( $field ) {
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// clear numeric settings
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$clear = array(
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'min_width',
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'min_height',
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'min_size',
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'max_width',
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'max_height',
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'max_size'
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);
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foreach( $clear as $k ) {
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if( empty($field[$k]) ) {
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$field[$k] = '';
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}
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}
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// return_format
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acf_render_field_setting( $field, array(
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'label' => __('Return Value','acf'),
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'instructions' => __('Specify the returned value on front end','acf'),
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'type' => 'radio',
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'name' => 'return_format',
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'layout' => 'horizontal',
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'choices' => array(
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'array' => __("Image Array",'acf'),
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'url' => __("Image URL",'acf'),
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'id' => __("Image ID",'acf')
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)
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));
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// preview_size
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acf_render_field_setting( $field, array(
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'label' => __('Preview Size','acf'),
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'instructions' => __('Shown when entering data','acf'),
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'type' => 'select',
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'name' => 'preview_size',
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'choices' => acf_get_image_sizes()
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));
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// library
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acf_render_field_setting( $field, array(
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'label' => __('Library','acf'),
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'instructions' => __('Limit the media library choice','acf'),
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'type' => 'radio',
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'name' => 'library',
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'layout' => 'horizontal',
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'choices' => array(
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'all' => __('All', 'acf'),
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'uploadedTo' => __('Uploaded to post', 'acf')
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)
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));
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// min
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acf_render_field_setting( $field, array(
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'label' => __('Minimum','acf'),
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'instructions' => __('Restrict which images can be uploaded','acf'),
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'type' => 'text',
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'name' => 'min_width',
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'prepend' => __('Width', 'acf'),
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'append' => 'px',
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));
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acf_render_field_setting( $field, array(
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'label' => '',
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'type' => 'text',
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'name' => 'min_height',
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'prepend' => __('Height', 'acf'),
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'append' => 'px',
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'wrapper' => array(
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'data-append' => 'min_width'
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)
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));
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acf_render_field_setting( $field, array(
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'label' => '',
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'type' => 'text',
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'name' => 'min_size',
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'prepend' => __('File size', 'acf'),
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'append' => 'MB',
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'wrapper' => array(
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'data-append' => 'min_width'
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)
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));
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// max
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acf_render_field_setting( $field, array(
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'label' => __('Maximum','acf'),
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'instructions' => __('Restrict which images can be uploaded','acf'),
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'type' => 'text',
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'name' => 'max_width',
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'prepend' => __('Width', 'acf'),
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'append' => 'px',
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));
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acf_render_field_setting( $field, array(
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'label' => '',
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'type' => 'text',
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'name' => 'max_height',
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'prepend' => __('Height', 'acf'),
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'append' => 'px',
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'wrapper' => array(
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'data-append' => 'max_width'
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)
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));
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acf_render_field_setting( $field, array(
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'label' => '',
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'type' => 'text',
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'name' => 'max_size',
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'prepend' => __('File size', 'acf'),
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'append' => 'MB',
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'wrapper' => array(
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'data-append' => 'max_width'
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)
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));
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// allowed type
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acf_render_field_setting( $field, array(
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'label' => __('Allowed file types','acf'),
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'instructions' => __('Comma separated list. Leave blank for all types','acf'),
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'type' => 'text',
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'name' => 'mime_types',
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));
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}
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/*
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* format_value()
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*
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* This filter is appied to the $value after it is loaded from the db and before it is returned to the template
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*
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* @type filter
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* @since 3.6
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* @date 23/01/13
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*
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* @param $value (mixed) the value which was loaded from the database
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* @param $post_id (mixed) the $post_id from which the value was loaded
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* @param $field (array) the field array holding all the field options
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*
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* @return $value (mixed) the modified value
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*/
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function format_value( $value, $post_id, $field ) {
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// bail early if no value
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if( empty($value) ) return false;
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// bail early if not numeric (error message)
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if( !is_numeric($value) ) return false;
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// convert to int
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$value = intval($value);
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// format
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if( $field['return_format'] == 'url' ) {
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return wp_get_attachment_url( $value );
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} elseif( $field['return_format'] == 'array' ) {
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return acf_get_attachment( $value );
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}
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// return
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return $value;
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}
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/*
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* get_media_item_args
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*
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* description
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*
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* @type function
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* @date 27/01/13
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* @since 3.6.0
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*
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* @param $vars (array)
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* @return $vars
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*/
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function get_media_item_args( $vars ) {
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$vars['send'] = true;
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return($vars);
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}
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/*
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* wp_prepare_attachment_for_js
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*
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* this filter allows ACF to add in extra data to an attachment JS object
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* This sneaky hook adds the missing sizes to each attachment in the 3.5 uploader.
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* It would be a lot easier to add all the sizes to the 'image_size_names_choose' filter but
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* then it will show up on the normal the_content editor
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*
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* @type function
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* @since: 3.5.7
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* @date 13/01/13
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*
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* @param {int} $post_id
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* @return {int} $post_id
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*/
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function wp_prepare_attachment_for_js( $response, $attachment, $meta ) {
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// only for image
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if( $response['type'] != 'image' ) {
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return $response;
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}
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// make sure sizes exist. Perhaps they dont?
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if( !isset($meta['sizes']) ) {
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return $response;
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}
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$attachment_url = $response['url'];
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$base_url = str_replace( wp_basename( $attachment_url ), '', $attachment_url );
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if( isset($meta['sizes']) && is_array($meta['sizes']) ) {
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foreach( $meta['sizes'] as $k => $v ) {
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if( !isset($response['sizes'][ $k ]) ) {
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$response['sizes'][ $k ] = array(
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'height' => $v['height'],
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'width' => $v['width'],
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'url' => $base_url . $v['file'],
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'orientation' => $v['height'] > $v['width'] ? 'portrait' : 'landscape',
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);
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}
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}
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}
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return $response;
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}
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/*
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* update_value()
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*
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* This filter is appied to the $value before it is updated in the db
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*
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* @type filter
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* @since 3.6
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* @date 23/01/13
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*
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* @param $value - the value which will be saved in the database
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* @param $post_id - the $post_id of which the value will be saved
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* @param $field - the field array holding all the field options
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*
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* @return $value - the modified value
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*/
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function update_value( $value, $post_id, $field ) {
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// numeric
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if( is_numeric($value) ) return $value;
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// array?
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if( is_array($value) && isset($value['ID']) ) return $value['ID'];
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// object?
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if( is_object($value) && isset($value->ID) ) return $value->ID;
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// return
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return $value;
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}
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}
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// initialize
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acf_register_field_type( new acf_field_image() );
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endif; // class_exists check
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?>
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