1 files changed, 130 insertions, 0 deletions
diff --git a/www/wiki/extensions/SemanticMediaWiki/src/MediaWiki/EditInfoProvider.php b/www/wiki/extensions/SemanticMediaWiki/src/MediaWiki/EditInfoProvider.php
new file mode 100644
index 00000000..00c2a6ec
--- /dev/null
+++ b/www/wiki/extensions/SemanticMediaWiki/src/MediaWiki/EditInfoProvider.php
@@ -0,0 +1,130 @@
+<?php
+
+namespace SMW\MediaWiki;
+
+use Revision;
+use SMW\ParserData;
+use User;
+use WikiPage;
+
+/**
+ * @license GNU GPL v2+
+ * @since 2.0
+ *
+ * @author mwjames
+ */
+class EditInfoProvider {
+
+	/**
+	 * @var WikiPage
+	 */
+	private $wikiPage = null;
+
+	/**
+	 * @var Revision
+	 */
+	private $revision = null;
+
+	/**
+	 * @var User
+	 */
+	private $user = null;
+
+	/**
+	 * @var ParserOutput
+	 */
+	private $parserOutput = null;
+
+	/**
+	 * @since 1.9
+	 *
+	 * @param WikiPage $wikiPage
+	 * @param Revision $revision
+	 * @param User|null $user
+	 */
+	public function __construct( WikiPage $wikiPage, Revision $revision, User $user = null ) {
+		$this->wikiPage = $wikiPage;
+		$this->revision = $revision;
+		$this->user = $user;
+	}
+
+	/**
+	 * @since 2.0
+	 *
+	 * @return ParserOutput|null
+	 */
+	public function getOutput() {
+		return $this->parserOutput;
+	}
+
+	/**
+	 * @since 2.5
+	 *
+	 * @return SemanticData|null
+	 */
+	public function fetchSemanticData() {
+
+		$parserOutput = $this->fetchEditInfo()->getOutput();
+
+		if ( $parserOutput === null ) {
+			return null;
+		}
+
+		return $parserOutput->getExtensionData( ParserData::DATA_ID );
+	}
+
+	/**
+	 * @since 2.0
+	 *
+	 * @return EditInfoProvider
+	 */
+	public function fetchEditInfo() {
+
+		$editInfo = $this->hasContentForEditMethod() ? $this->prepareContentForEdit() : $this->prepareTextForEdit();
+
+		$this->parserOutput = isset( $editInfo->output ) ? $editInfo->output : null;
+
+		return $this;
+	}
+
+	/**
+	 * FIXME MW 1.21-
+	 */
+	protected function hasContentForEditMethod() {
+		return method_exists( 'WikiPage', 'prepareContentForEdit' );
+	}
+
+	private function prepareContentForEdit() {
+
+		if ( !$this->revision instanceof Revision ) {
+			return null;
+		}
+
+		$content = $this->revision->getContent();
+
+		return $this->wikiPage->prepareContentForEdit(
+			$content,
+			null,
+			$this->user,
+			$content->getContentHandler()->getDefaultFormat()
+		);
+	}
+
+	private function prepareTextForEdit() {
+		// keep backwards compatibility with MediaWiki 1.19 by deciding, if the
+		// newer Revision::getContent() method (MW 1.20 and above) or the bc
+		// method Revision::getRawText() is used.
+		if ( method_exists( $this->revision, 'getContent' ) ) {
+			$text = $this->revision->getContent( Revision::RAW );
+		} else {
+			// FIXME: Isn't needed after drop of support for MW 1.19
+			$text = $this->revision->getRawText();
+		}
+		return $this->wikiPage->prepareTextForEdit(
+			$text,
+			null,
+			$this->user
+		);
+	}
+
+}