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<?php
/*
* Goodlayers Revision
* ---------------------------------------------------------------------
* File which store the revision
* ---------------------------------------------------------------------
*/
if( !class_exists('gdlr_fw2_revision') ){
class gdlr_fw2_revision{
// static function for field registration
private static $revision_fields = array();
static function add_field( $field ){
self::$revision_fields[] = $field;
}
// starting revision object
private $num_revision;
function __construct( $num_revision = 10 ){
$this->num_revision = $num_revision;
add_filter('wp_revisions_to_keep', array(&$this, 'filter_function_name'), 10, 2);
add_action('init', array(&$this, 'add_revision_action'));
}
function add_revision_action(){
add_filter('wp_save_post_revision_post_has_changed', array(&$this, 'check_revision_field_changes'), 10, 3);
add_action('_wp_put_post_revision', array(&$this, 'update_revision_meta_field'));
add_action('wp_restore_post_revision', array(&$this, 'restore_revision_meta_filed'), 10, 2);
// for preview revision
add_filter('_wp_post_revision_fields', array(&$this, 'add_preview_revision_fields'));
foreach( self::$revision_fields as $revision_field ){
if( !empty($revision_field['callback']) ){
add_filter('_wp_post_revision_field_' . $revision_field['meta_key'], $revision_field['callback']);
}
}
}
// define the number of revision user can stored
function filter_function_name( $num, $post ) {
return $this->num_revision;
}
// check if there are any changes to meta fields
function check_revision_field_changes( $post_has_changed, $last_revision, $post ){
foreach( self::$revision_fields as $revision_field ){
if( get_post_meta($post->ID, $revision_field['meta_key'], true) != get_post_meta($last_revision->ID, $revision_field['meta_key'], true) ){
$post_has_changed = true;
}
}
return $post_has_changed;
}
// update meta field when revision is updated
function update_revision_meta_field( $revision_id ){
$post_parent = wp_is_post_revision($revision_id);
foreach( self::$revision_fields as $revision_field ){
$meta_value = get_post_meta($post_parent, $revision_field['meta_key'], true);
if( !empty($meta_value) ){
add_metadata('post', $revision_id, $revision_field['meta_key'], $meta_value);
}
}
}
// restore meta field when revision is restored
function restore_revision_meta_filed( $post_id, $revision_id ){
foreach( self::$revision_fields as $revision_field ){
$revision_data = get_post_meta($revision_id, $revision_field['meta_key'], true);
if( !empty($revision_data) ){
update_post_meta($post_id, $revision_field['meta_key'], $revision_data);
}
}
}
// for previewing the revision
function add_preview_revision_fields( $fields ){
foreach( self::$revision_fields as $revision_field ){
$fields[$revision_field['meta_key']] = $revision_field['meta_name'];
}
return $fields;
}
} // gdlr_revision
} // class_exists
if( !function_exists('gdlr_fw2_decode_preventslashes') ){
function gdlr_fw2_decode_preventslashes($value){
$value = str_replace('|gq6|', '\\\\\\"', $value);
$value = str_replace('|gq5|', '\\\\\"', $value);
$value = str_replace('|gq4|', '\\\\"', $value);
$value = str_replace('|gq3|', '\\\"', $value);
$value = str_replace('|gq2|', '\\"', $value);
$value = str_replace('|gq"|', '\"', $value);
$value = str_replace('|g2t|', '\\\t', $value);
$value = str_replace('|g1t|', '\t', $value);
$value = str_replace('|g2n|', '\\\n', $value);
$value = str_replace('|g1n|', '\n', $value);
return $value;
}
}
if( !function_exists('gdlr_convert_fw2_revision_data') ){
function gdlr_convert_fw2_revision_data( $data ){
if( is_array($data) ){ $data = $data[0]; }
$data_val = gdlr_fw2_decode_preventslashes($data);
$data_array = json_decode($data_val, true);
if( !empty($data_array) ){
return $data_val;
}
return '';
}
}
if( class_exists('gdlr_fw2_revision') ){
gdlr_fw2_revision::add_field(array(
'meta_key'=>'gdlr-lms-content-settings',
'meta_name'=>esc_html__('Course Content', 'gdlr_translate'),
'callback'=>'gdlr_convert_fw2_revision_data'
));
gdlr_fw2_revision::add_field(array(
'meta_key'=>'above-sidebar',
'meta_name'=>esc_html__('Above Sidebar', 'gdlr_translate'),
'callback'=>'gdlr_convert_fw2_revision_data'
));
gdlr_fw2_revision::add_field(array(
'meta_key'=>'below-sidebar',
'meta_name'=>esc_html__('Below Sidebar', 'gdlr_translate'),
'callback'=>'gdlr_convert_fw2_revision_data'
));
gdlr_fw2_revision::add_field(array(
'meta_key'=>'content-with-sidebar',
'meta_name'=>esc_html__('Content With Sidebar', 'gdlr_translate'),
'callback'=>'gdlr_convert_fw2_revision_data'
));
gdlr_fw2_revision::add_field(array(
'meta_key'=>'post-option',
'meta_name'=>esc_html__('Post Option', 'gdlr_translate'),
'callback'=>'gdlr_convert_fw2_revision_data'
));
new gdlr_fw2_revision();
}