feat: Added adopt-root-styles property for templated content - #46
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Add support for adopting document-level styles into shadow DOM when using cell and header templates. This enables custom styles defined in the light DOM to be applied to templated content within web components. Changes: - Added AdoptedStylesController to manage style adoption in shadow DOM - Added `adopt-root-styles` property to grid component - Implemented style adoption in cell and header components when templates are used - Added unit tests for AdoptedStylesController and style adoption functionality - Optimizeed rendering by replacing `map` directive with `repeat` directive The controller caches adopted stylesheets per document and handles theme changes by invalidating the cache. Styles are only adopted when the property is enabled AND a template is provided, ensuring minimal overhead when not in use.
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damyanpetev
approved these changes
Feb 13, 2026
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Add support for adopting document-level styles into shadow DOM when using cell and header templates. This enables custom styles defined in the light DOM to be applied to templated content within web components.
Changes:
adopt-root-stylesproperty to grid componentmapdirective withrepeatdirectiveThe controller caches adopted stylesheets per document and handles theme changes by invalidating the cache. Styles are only adopted when the property is enabled AND a template is provided, ensuring minimal overhead when not in use.