feat: add support for CSS code highlight - #167
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This repository does not receive automatic reviews because it has fewer than 10 stars. ⚙️ Run configurationConfiguration used: Organization UI Review profile: CHILL Plan: Advanced Run ID: WalkthroughThe source viewer now supports ChangesSource viewer highlighting
Priority: ➖ Normal — Schedule the CSS source-highlighting support because it delivers a medium-severity feature and fixes fragment rendering, show-source overrides, and line-ending behavior across the demo and viewer tests. Estimated code review effort: 3 (Moderate) | ~20 minutes Severity of issue fixed: Medium Merge Risk: 🔵 Low · up to This change adds CSS fragment display and source-cleanup behavior, but multiline stylesheet annotations may render partially, first-line fragments may start with an unwanted blank line, and CSS language selection is not directly covered. These are bounded source-view presentation risks that should be addressed before relying on the new behavior broadly. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 8.33% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 12 functions across 8 files. (9 skipped: 9 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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About the SonarCloud warnings The analysis reports 10 remaining issues, all in Six of them (L343, L444, L454) are pre-existing code. Those lines are in the diff only because the surrounding expression changed: The other four (L342, L432) are new lines that follow the idiom already used throughout this file, where regular expressions are written as string literals and matched with The issues that were worth fixing are fixed: the three The quality gate is red only on |
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Actionable comments posted: 3
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Inline comments:
In `@base/src/main/resources/META-INF/resources/frontend/code-viewer.ts`:
- Line 346: Update the filtering logic in the code viewer to consume complete
multiline `@StyleSheet` annotation blocks, including continuation and closing
lines, rather than excluding only the starting line. Mirror the existing
`@DemoSource` handling and preserve filtering of single-line annotations.
- Around line 441-442: Update the delimiter handling around commentBody in the
code-viewer flow so that when the delimiter is the first source line and no
previous node exists, the following text node is trimmed instead of calling
trimEnd with -1. Preserve the existing behavior for delimiters with a preceding
node.
In
`@base/src/test/java/com/flowingcode/vaadin/addons/demo/it/SourceCodeViewerIT.java`:
- Line 69: Update the test method containing assertEquals(expected(), openCss())
to also assert the rendered language marker or component language attribute
identifies CSS, using the existing viewer/component accessors. Keep the
source-content assertion and verify that SourceCodeViewerView selects CSS rather
than Java.
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⚙️ Run configuration
Configuration used: Organization UI
Review profile: CHILL
Plan: Advanced
Run ID: 129a7dd0-b957-4f10-91ac-6ebe20b58f35
📒 Files selected for processing (17)
.gitattributesREADME.mdbase/pom.xmlbase/src/main/resources/META-INF/resources/frontend/code-viewer.tsbase/src/test/java/com/flowingcode/vaadin/addons/demo/MultiSourceDemo.javabase/src/test/java/com/flowingcode/vaadin/addons/demo/SampleDemoHighlight.javabase/src/test/java/com/flowingcode/vaadin/addons/demo/it/AbstractSourceCodeViewerIT.javabase/src/test/java/com/flowingcode/vaadin/addons/demo/it/SourceCodeViewerIT.javabase/src/test/java/com/flowingcode/vaadin/addons/demo/it/SourceCodeViewerView.javabase/src/test/resources/META-INF/resources/frontend/highlight-demo.cssbase/src/test/resources/com/flowingcode/vaadin/addons/demo/it/AnnotationCleanup.javabase/src/test/resources/com/flowingcode/vaadin/addons/demo/it/CssFragment.cssbase/src/test/resources/com/flowingcode/vaadin/addons/demo/it/CssFragment.txtbase/src/test/resources/com/flowingcode/vaadin/addons/demo/it/ShowSourceOverride.javabase/src/test/resources/com/flowingcode/vaadin/addons/demo/it/ShowSourceOverride.txtpom.xmlprocessor/pom.xml
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1 participant
Close #98
Closes #165
Closes #166.
Summary
Adds CSS support to the source code viewer's fragment highlighting, along with the fixes that support it.
Fragment highlighting required delimiters written as
// begin-block nameand// end-block, which is not a valid comment in CSS. Delimiters can now also be written as block comments, which is the only option in languages that have no line comments. This uncovered two related defects and one missing feature, each committed separately.Changes
The trailing whitespace pattern required at least one space or tab after the newline, so the delimiter's line was removed only when the delimiter was indented. A begin-block or end-block at column 0 was blanked but left a stray empty line. Pre-existing, but unavoidable in CSS, where rules normally start at column 0.
The delimiters can also be written as block comments. The language is inferred from the file extension, so a CSS source can be highlighted from another panel through filename#id.
@StyleSheetis not processed by the bundler and its URL is not resolved against the frontend folder. Since the injected base href points to the context root, ./foo.css resolved to /foo.css instead of /frontend/foo.css, so the stylesheet was never applied.The source code viewer compares the fetched source verbatim against the expected output of the integration tests, so a CRLF checkout makes them fail on Windows.
A line that ends with a // show-source comment is always rendered, with the comment removed. Without an override there is no way to demo the features of the library itself, since the calls that exercise them are removed as boilerplate.
Summary by CodeRabbit
// show-sourcecan be preserved while removing the marker from displayed code.