Source.php

<?php
namespace LinkTitles;

class Source {
  public $config;

  private $title;

  private $text;

  private $page;

  private $content;

  public static function createFromTitle( \Title $title, Config $config ) {
    $source = new Source( $config );
    $source->title = $title;
    return $source;
  }

  public static function createFromTitleAndText( \Title $title, $text, Config $config ) {
    $source = Source::createFromTitle( $title, $config);
    $source->text = $text;
    return $source;
  }

  public static function createFromPageandContent( \WikiPage $page, \Content $content, Config $config ) {
    $source = new Source( $config );
    $source->page = $page;
    $source->content = $content;
    return $source;
  }

  public static function createFromParser( \Parser $parser, Config $config ) {
    $source = new Source( $config );
    $source->title = $parser->getTitle();
    return $source;
  }

  public static function createFromParserAndText( \Parser $parser, $text, Config $config ) {
    $source = Source::createFromParser( $parser, $config );
    $source->text = $text;
    return $source;
  }

  private function __construct( Config $config) {
    $this->config = $config;
  }

  public function canBeLinked() {
    return $this->hasDesiredNamespace() && !$this->hasNoAutolinksMagicWord();
  }

  public function hasDesiredNamespace() {
    return in_array( $this->getTitle()->getNamespace(), $this->config->sourceNamespaces );
  }

  public function hasNoAutolinksMagicWord() {
    return \MagicWord::get( 'MAG_LINKTITLES_NOAUTOLINKS' )->match( $this->getText() );
  }

  public function getTitle() {
    if ( $this->title === null ) {
      // Access the property directly to avoid an infinite loop.
      if ( $this->page != null) {
        $this->title = $this->page->getTitle();
      } else {
        throw new Exception( 'Unable to create Title for this Source because Page is null.' );
      }
    }
    return $this->title;
  }

  public function getNamespace() {
    return $this->getTitle()->getNamespace();
  }

  public function getContent() {
    if ( $this->content === null ) {
      $this->content = $this->getPage()->getContent();
    }
    return $this->content;
  }

  public function hasContent() {
    return $this->getContent() != null;
  }

  public function getText() {
    if ( $this->text === null ) {
      $content = $this->getContent();
      $this->text = $content->getContentHandler()->serializeContent( $content );
    }
    return $this->text;
  }

  public function setText( $text ) {
    $this->content = $this->content->getContentHandler()->unserializeContent( $text );
    $this->text = $text;
    return $this->content;
  }

  public function getPage() {
    if ( $this->page === null ) {
      // Access the property directly to avoid an infinite loop.
      if ( $this->title != null) {
        $this->page = \WikiPage::factory( $this->title );
      } else {
        throw new Exception( 'Unable to create Page for this Source because Title is null.' );
      }
    }
    return $this->page;
  }
}