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<?php
class Types_Information_Container {
protected $id;
protected $messages = array();
protected $messages_filtered = array();
protected $output_container = false;
/**
* We need this option to show messages for hooks followed by a page reload.
* @var bool
*/
protected $cached = false;
public function __construct( $id ) {
$this->id = $id;
}
// get id
public function get_id() {
return $this->id;
}
// add message
public function add_message( Types_Information_Message $message ) {
$this->messages[] = $message;
}
public function get_messages() {
return $this->messages;
}
/**
* @return array|bool
*/
public function get_descriptions() {
if( empty( $this->messages ) )
return false;
// check if descriptions were already filtered
if( isset( $this->messages_filtered['descriptions'] ) )
return $this->messages_filtered['descriptions'];
$descriptions = array();
foreach( $this->messages as $message ){
$descriptions[] = $message->get_description();
}
Types_Helper_Placeholder::replace( $descriptions );
$this->messages_filtered['descriptions'] = $descriptions;
return $descriptions;
}
/**
*
* @return bool
*/
public function get_examples() {
if( empty( $this->messages ) )
return false;
// check if descriptions were already filtered
if( isset( $this->messages_filtered['view_example'] ) )
return $this->messages_filtered['view_example'];
$examples = array();
foreach( $this->messages as $message ) {
if( !empty( $examples ) ) {
$current_example = $message->get_example();
// check if the view example is already applied
foreach( $examples as $view ) {
// skip to next message
if( $view['label'] == $current_example['label'] )
continue 2;
}
// no duplication, add view example
$examples[] = $current_example;
continue;
}
// view example has no value yet
$examples[] = $message->get_example();
}
Types_Helper_Placeholder::replace( $examples );
$this->messages_filtered['view_example'] = $examples;
return $examples;
}
/**
* @param bool|string $output e.g., a rendered Twig template
*
* @return bool|string
*/
public function render( $output = false ) {
$output = $output ? $output : '';
if( $this->cached && !$this->is_cached() )
return false;
// use message render function if no output is set
if( empty( $output ) && ! empty( $this->messages ) ) {
foreach( $this->messages as $message ) {
$output .= $message->render();
}
}
// send output to container (e.g., meta-box) and return full container output
if( $this->output_container ) {
$this->output_container->set_content( $output );
return $this->output_container->output();
}
return $output;
}
// set output container
public function set_output_container( $output ) {
// @todo type hinting Types_Helper_Output_Meta_Box
$this->output_container = $output;
}
// cache on hook
public function cache_on_hook( $hook ) {
$this->cached = true;
add_action( $hook, array( $this, 'cache' ) );
}
public function cache() {
$this->cached = true;
if( ! $this->id )
return false;
$db_messages = get_option( 'types_messages', array() );
$db_messages[$this->id] = 1;
update_option( 'types_messages', $db_messages );
}
/**
* Check if cached
*
* @return bool
*/
private function is_cached() {
$db_messages = get_option( 'types_messages', array() );
if( ! isset( $db_messages[$this->id] ) || empty( $db_messages[$this->id] ) )
return false;
// disable message again
$db_messages[$this->id] = 0;
update_option( 'types_messages', $db_messages );
return true;
}
}