From 730c2c01a843cac4a98a12fe22ad7c2745abfe71 Mon Sep 17 00:00:00 2001
From: Jackmcbarn <jackmcbarn@gmail.com>
Date: Sun, 6 Apr 2014 21:03:02 -0400
Subject: [PATCH] Allow passing parameters to preload

When pages are loaded in the edit box via preload, allow parameter
substitution. The interface-style $1 is used rather than the
template-style {{{1}}} to avoid conflicts with preloads that add template
parameters. Syntax is:
action=edit&preload=Foo&preloadparams[]=first&preloadparams[]=second

Bug: 12853
Change-Id: If02cf4b3dba9f9d22a956d8bfff224677cbce00d
---
 includes/EditPage.php                | 8 +++++---
 includes/content/AbstractContent.php | 2 +-
 includes/content/Content.php         | 3 ++-
 includes/content/WikitextContent.php | 5 +++--
 includes/parser/Parser.php           | 6 +++++-
 5 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/includes/EditPage.php b/includes/EditPage.php
index f57fc60581..c0d8d26f68 100644
--- a/includes/EditPage.php
+++ b/includes/EditPage.php
@@ -910,8 +910,9 @@ class EditPage {
 				$preload = $wgRequest->getVal( 'preload',
 					// Custom preload text for new sections
 					$this->section === 'new' ? 'MediaWiki:addsection-preload' : '' );
+				$params = $wgRequest->getArray( 'preloadparams', array() );
 
-				$content = $this->getPreloadedContent( $preload );
+				$content = $this->getPreloadedContent( $preload, $params );
 			}
 		// For existing pages, get text based on "undo" or section parameters.
 		} else {
@@ -1116,12 +1117,13 @@ class EditPage {
 	 * an earlier setPreloadText() or by loading the given page.
 	 *
 	 * @param string $preload representing the title to preload from.
+	 * @param Array $params Parameters to use (interface-message style) in the preloaded text
 	 *
 	 * @return Content
 	 *
 	 * @since 1.21
 	 */
-	protected function getPreloadedContent( $preload ) {
+	protected function getPreloadedContent( $preload, $params = array() ) {
 		global $wgUser;
 
 		if ( !empty( $this->mPreloadContent ) ) {
@@ -1175,7 +1177,7 @@ class EditPage {
 			$content = $converted;
 		}
 
-		return $content->preloadTransform( $title, $parserOptions );
+		return $content->preloadTransform( $title, $parserOptions, $params );
 	}
 
 	/**
diff --git a/includes/content/AbstractContent.php b/includes/content/AbstractContent.php
index f2f0c9d635..77d354294d 100644
--- a/includes/content/AbstractContent.php
+++ b/includes/content/AbstractContent.php
@@ -375,7 +375,7 @@ abstract class AbstractContent implements Content {
 	 *
 	 * @see Content::preloadTransform
 	 */
-	public function preloadTransform( Title $title, ParserOptions $popts ) {
+	public function preloadTransform( Title $title, ParserOptions $popts, $params = array() ) {
 		return $this;
 	}
 
diff --git a/includes/content/Content.php b/includes/content/Content.php
index 075635d330..e9c6ac024d 100644
--- a/includes/content/Content.php
+++ b/includes/content/Content.php
@@ -437,10 +437,11 @@ interface Content {
 	 *
 	 * @param Title $title
 	 * @param ParserOptions $parserOptions
+	 * @param array $params
 	 *
 	 * @return Content
 	 */
-	public function preloadTransform( Title $title, ParserOptions $parserOptions );
+	public function preloadTransform( Title $title, ParserOptions $parserOptions, $params = array() );
 
 	/**
 	 * Prepare Content for saving. Called before Content is saved by WikiPage::doEditContent() and in
diff --git a/includes/content/WikitextContent.php b/includes/content/WikitextContent.php
index 605222ef3d..13ef1b96db 100644
--- a/includes/content/WikitextContent.php
+++ b/includes/content/WikitextContent.php
@@ -154,14 +154,15 @@ class WikitextContent extends TextContent {
 	 *
 	 * @param Title $title
 	 * @param ParserOptions $popts
+	 * @param array $params
 	 *
 	 * @return Content
 	 */
-	public function preloadTransform( Title $title, ParserOptions $popts ) {
+	public function preloadTransform( Title $title, ParserOptions $popts, $params = array() ) {
 		global $wgParser;
 
 		$text = $this->getNativeData();
-		$plt = $wgParser->getPreloadText( $text, $title, $popts );
+		$plt = $wgParser->getPreloadText( $text, $title, $popts, $params );
 
 		return new WikitextContent( $plt );
 	}
diff --git a/includes/parser/Parser.php b/includes/parser/Parser.php
index d7584ca67f..3b448e45d2 100644
--- a/includes/parser/Parser.php
+++ b/includes/parser/Parser.php
@@ -650,9 +650,13 @@ class Parser {
 	 * @param $text String
 	 * @param $title Title
 	 * @param $options ParserOptions
+	 * @param $params Array
 	 * @return String
 	 */
-	public function getPreloadText( $text, Title $title, ParserOptions $options ) {
+	public function getPreloadText( $text, Title $title, ParserOptions $options, $params = array() ) {
+		$msg = new RawMessage( $text );
+		$text = $msg->params( $params )->plain();
+
 		# Parser (re)initialisation
 		$this->startParse( $title, $options, self::OT_PLAIN, true );
 
-- 
2.20.1