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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\Wikistories; |
| 4 | |
| 5 | use Content; |
| 6 | use LogicException; |
| 7 | use SlotDiffRenderer; |
| 8 | use TextContent; |
| 9 | use TextSlotDiffRenderer; |
| 10 | |
| 11 | class StorySlotDiffRenderer extends SlotDiffRenderer { |
| 12 | |
| 13 | private StoryConverter $storyConverter; |
| 14 | private TextSlotDiffRenderer $textSlotDiffRenderer; |
| 15 | |
| 16 | public function __construct( |
| 17 | StoryConverter $storyConverter, |
| 18 | TextSlotDiffRenderer $textSlotDiffRenderer |
| 19 | ) { |
| 20 | $this->storyConverter = $storyConverter; |
| 21 | $this->textSlotDiffRenderer = $textSlotDiffRenderer; |
| 22 | } |
| 23 | |
| 24 | /** |
| 25 | * Get a diff between two content objects. One of them might be null (meaning a slot was |
| 26 | * created or removed), but both cannot be. $newContent (or if it's null then $oldContent) |
| 27 | * must have the same content model that was used to obtain this diff renderer. |
| 28 | * |
| 29 | * IMPORTANT: To develop/debug this code, you'll need to prevent diff caching. This can |
| 30 | * be done by adding the following code to your LocalSettings.php (or other config file). |
| 31 | * $wgHooks['AbortDiffCache'][] = function () { return false; }; |
| 32 | * |
| 33 | * @param Content|null $oldContent |
| 34 | * @param Content|null $newContent |
| 35 | * @return string HTML, one or more <tr> tags. |
| 36 | */ |
| 37 | public function getDiff( Content $oldContent = null, Content $newContent = null ) { |
| 38 | $this->normalizeContents( $oldContent, $newContent, [ StoryContent::class, TextContent::class ] ); |
| 39 | |
| 40 | return $this->textSlotDiffRenderer->getTextDiff( |
| 41 | $this->getText( $oldContent ), |
| 42 | $this->getText( $newContent ) |
| 43 | ); |
| 44 | } |
| 45 | |
| 46 | private function getText( Content $content ): string { |
| 47 | if ( $content instanceof StoryContent ) { |
| 48 | return $this->storyConverter->toLatest( $content )->getTextForDiff(); |
| 49 | } elseif ( $content instanceof TextContent ) { |
| 50 | return $content->getText(); |
| 51 | } |
| 52 | throw new LogicException( 'Cannot diff story with content with model: ' . $content->getModel() ); |
| 53 | } |
| 54 | } |