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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\Wikistories; |
| 4 | |
| 5 | use LogicException; |
| 6 | use MediaWiki\Content\Content; |
| 7 | use MediaWiki\Content\TextContent; |
| 8 | use SlotDiffRenderer; |
| 9 | use TextSlotDiffRenderer; |
| 10 | |
| 11 | class StorySlotDiffRenderer extends SlotDiffRenderer { |
| 12 | |
| 13 | public function __construct( |
| 14 | private readonly StoryConverter $storyConverter, |
| 15 | private readonly TextSlotDiffRenderer $textSlotDiffRenderer, |
| 16 | ) { |
| 17 | } |
| 18 | |
| 19 | /** |
| 20 | * Get a diff between two content objects. One of them might be null (meaning a slot was |
| 21 | * created or removed), but both cannot be. $newContent (or if it's null then $oldContent) |
| 22 | * must have the same content model that was used to obtain this diff renderer. |
| 23 | * |
| 24 | * IMPORTANT: To develop/debug this code, you'll need to prevent diff caching. This can |
| 25 | * be done by adding the following code to your LocalSettings.php (or other config file). |
| 26 | * $wgHooks['AbortDiffCache'][] = function () { return false; }; |
| 27 | * |
| 28 | * @param Content|null $oldContent |
| 29 | * @param Content|null $newContent |
| 30 | * @return string HTML, one or more <tr> tags. |
| 31 | */ |
| 32 | public function getDiff( ?Content $oldContent = null, ?Content $newContent = null ): string { |
| 33 | $this->normalizeContents( $oldContent, $newContent, [ StoryContent::class, TextContent::class ] ); |
| 34 | |
| 35 | return $this->textSlotDiffRenderer->getTextDiff( |
| 36 | $this->getText( $oldContent ), |
| 37 | $this->getText( $newContent ) |
| 38 | ); |
| 39 | } |
| 40 | |
| 41 | private function getText( Content $content ): string { |
| 42 | if ( $content instanceof StoryContent ) { |
| 43 | return $this->storyConverter->toLatest( $content )->getTextForDiff(); |
| 44 | } elseif ( $content instanceof TextContent ) { |
| 45 | return $content->getText(); |
| 46 | } |
| 47 | throw new LogicException( 'Cannot diff story with content with model: ' . $content->getModel() ); |
| 48 | } |
| 49 | } |