Infragistics Ignite UI for React Versions

• LLM Agent Skills (updated) - four in-package skills teach AI agents React component usage, theming, design-to-code, and bundle optimization.
• CLI MCP Server: React support - ig mcp serves React component docs, full API reference, and scaffolding guidance to any connected AI assistant.
• Invoker Commands API - declarative --show, --hide, --toggle via command and commandFor props, no JavaScript wiring required.
• Platform Popover Upgrades - Nav Drawer moves to native Popover API; Snackbar and Toast gain top-layer positioning property.
• Date Range Picker inline editing - edit range value directly via a single input field.
• Nav Drawer overlay CSS part removed - target base::backdrop or --ig-overlay-background-color instead.
• Form controls: Enter key submits the associated form - IgrInput, IgrMaskInput, IgrDateTimeInput, IgrCheckbox, IgrRadio, IgrSwitch, IgrDatePicker, and IgrDateRangePicker now match native HTML form element behavior on Enter. No code changes required; review any custom Enter-key handlers that manually call form.submit() to avoid duplicate submissions.
• Input: date/time type theming - date, time, datetime-local, week, and month input types now receive full theming support and consistent floating label behavior across all supported themes.
• Localization: resource strings deprecated - the per-component resourceStrings interfaces for Calendar, Chat, Date Picker, and Date Range Picker are deprecated. Components now use igniteui-i18n resource keys. Provide a complete resource strings object rather than setting individual string properties.

• Button Group selected state border color mismatch in focused and hover states; Combo display value not restored when tabbing out in single-select mode with partial search text; Stepper step components now correctly receive context when connected to the DOM before their parent stepper.

AI-Assisted Development - Agent Skills

• Added structured knowledge files that teach AI coding assistants (GitHub Copilot, Cursor, Windsurf, Claude, JetBrains AI, etc.) how to work with Ignite UI for React. The skill files are included in the igniteui-react package and also live in the skills/ directory:
  • Components - Identify the right React components for a UI pattern, then install, import, and use them - JSX patterns, events, refs, forms, etc.
  • Customize-theme - Customize styling using CSS custom properties, Sass, and the theming system in React, including using Ignite UI Theming MCP server.
  • Optimize-bundle-size - Reduce bundle size with granular imports, tree-shaking, and lazy loading.
• These skills are automatically discovered when placed in the agent's skills path (e.g. .agents/skills or .claude/skills).

Changed

• IgrDockManager: Updated to use the latest igniteui-dockmanager 2.1.0 with new minResizeWidth and minResizeHeight properties, paneFlyoutToggle event and additional layoutChange event detail.
• Updated to use the latest igniteui-webcomponents 7.1.0 including new Splitter and Highlight container components and fixes.

• IgrDataPieChart
  • Missing styling properties for the Others Slice.
• IgrDataTooltipLayer
  • TitleTextColor is overriden when chart's TitleTextColor is used.
• Excel
  • Object's Formulas are not round-tripped - Added Excel support for round tripping the camera tool.
  • Saving a VBA Signed Excel file does not keep a signature/certificate.
• IgrDataChart
  • AssigningCategoryStyle args.GetItems is null or not working to update items in the fragment series.

• AI-Assisted Development - Copilot Skills
  • Four end-user skills are now shipped with the igniteui-react package under the skills/ directory providing step-by-step guidance to GitHub Copilot and other LLM agents for common tasks:
    • igniteui-wc-choose-components - Identify the right component for a given UI pattern.
    • igniteui-wc-integrate-with-framework - Set up and use components in React, Angular, Vue, or vanilla JS.
    • igniteui-wc-customize-component-theme - Apply custom styles via CSS custom properties, parts, and the theming system.
    • igniteui-wc-optimize-bundle-size - Reduce production bundle size through selective imports and lazy loading.
• Chat
  • adoptRootStyles can now be toggled on/off at runtime.
• grid, IgrTreeGrid, IgrHierarchicalGrid, IgrPivotGrid
  • Improved performance by dynamically adjusting the scroll throttle based on the data displayed in grid.
• PDF export
  • Added PDF export functionality allowing users to export grid data to PDF format.
• Popover API
  • Dropdown menus and dialogs are now using HTML Popover API to provide better positioning and accessibility.
• Localization(i18n)
  • grid, IgrTreeGrid, IgrHierarchicalGrid, IgrPivotGrid, IgrCombo, DatePicker, IgrDateRangePicker, IgrCalendar, IgrCarousel, IgrChip, IgrInput, IgrTree
    • New Intl implementation for the grid components that format and render data like dates and numbers. Updated Intl implementation for IgrCalendar, DatePicker, and IgrDateRangePicker.
    • New localization implementation for the currently supported languages for all components that have resource strings in the currently supported languages.
    • New public localization API and package named igniteui-i18n-resources containing the new resources that are used in conjunction.
• Breaking Changes
  • Themes
    • Changed global prefixes for CSS custom properties for component themes to align with other Ignite UI component libraries.
  • Chat
    • Removed the typingIndicator template renderer. Use the typing-indicator slot instead.
  • Tooltip
    • Removed the disableArrow deprecated property.
  • Library
    • Minimum Node version required is now >= 22.
  • grid, IgrTreeGrid, IgrHierarchicalGrid, IgrPivotGrid
    • Original data array mutations (like adding/removing/moving records in the original array) are no longer detected automatically. Components need an array reference change for the change to be detected.

• Carousel
  • Error with context instantiation.
• Combo
  • Fixed cursor style over non input parts.
• Textarea
  • Fixed cursor style over non input parts.

• Data Chart
  • Added OthersCategoryBrush and OthersCategoryOutline to DataPieChart and ProportionalCategoryAngleAxis.
• Radial Chart
  • Added a check for bucket size equals to 0.

• Layouts
  • Skip resolving property editor props containing 'constantValues'.
• Data Chart
  • Syntax error while building infragistics.dvcommonwidget.js.
  • infragistics.dvcommonwidget.js has "unser" typo instead of "unset" in case names.
  • Fixed GetCategoryIndexAxis() for annotation layers.
• Data Pie Chart
  • SeriesPointerMove event doesn't fire correctly when StartAngle is set.
• Excel
  • Workbook.Load() throwing a Excel.FormulaParseException.