feat(jetbrains): add MdView markdown rendering component#9149
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Add a standalone markdown rendering component for the JetBrains plugin using commonmark-java. This will be used in the chat UI to render assistant messages as formatted markdown instead of plain text. - Abstract MdView class with factory method and private HTML implementation - Configurable styling (font, colors, opacity/transparency) - Link click listeners via inner LinkListener interface - Streaming-friendly set/append/clear API - 44 unit tests covering rendering, styling, links, and transparency
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Code Review SummaryStatus: No Issues Found | Recommendation: Merge Files Reviewed (4 files)
Reviewed by gpt-5.4-20260305 · 1,168,602 tokens |
- Enable escapeHtml and sanitizeUrls on the commonmark HtmlRenderer to prevent raw HTML injection and dangerous URL schemes - Fix LinkEvent.point to use MouseEvent.point instead of the component's origin coordinates
- Replace plain JEditorPane + manual CSS with JBHtmlPane, the IntelliJ platform's flagship HTML component - Font and colours now default to the global editor colour scheme via JBHtmlPane's built-in EditorCssFontResolver and colorSchemeProvider - Code font defaults to _EditorFontNoLigatures_ placeholder resolved by EditorCssFontResolver at render time - All style properties become optional overrides applied via a customStyleSheetProvider; the override sheet is empty until a property is set, so editor defaults always win unless explicitly overridden - Add resetStyles() to revert all overrides back to editor defaults - Transparency (opaque=false) handled by Swing isOpaque + transparent CSS body rule; no manual background injection when transparent - Update tests to use overrideSheet() and component state assertions
catrielmuller
approved these changes
Apr 20, 2026
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Summary
Adds a standalone
MdViewmarkdown rendering component for the JetBrains plugin, for future use in the chat UI to render assistant messages as formatted markdown instead of plain text.MdView.html()) — the rendering backend is fully hidden and swappable laterJBHtmlPane— the IntelliJ platform's native HTML component — so font and colours automatically follow the global editor colour scheme and editor font settings out of the box_EditorFontNoLigatures_placeholder, resolved at render time byEditorCssFontResolverto the actual editor monospace fontresetStyles()reverts all overrides back to editor defaultsopaque = false) handled by SwingisOpaque+ abackground: transparentCSS body rule; no background is forced when transparentLinkListenerinterface with correct mouse-event coordinatesescapeHtml,sanitizeUrls) to prevent injection from model outputresetStyles