AIChat: popup and chat default configuration

[anna-shakhova]

No description provided.

[Copilot]

Pull request overview

This PR extends the DataGrid AI Assistant integration by introducing default Popup/Chat configuration, exposing additional styling hooks for the Chat empty view, and wiring option-change handling so aiAssistant.popup / aiAssistant.chat updates can be applied at runtime.

Changes:

• Export Chat MessageList empty-view CSS class constants and use them to build a localized empty view template in AIChat.
• Add default Popup/Chat options (including a clear-chat toolbar button) and support updating Popup/Chat options via AIChat.updateOptions.
• Introduce aiAssistant option-change helpers + Jest tests, and update AI Assistant view/controller logic to react to option changes.

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
packages/devextreme/js/__internal/ui/chat/messagelist.ts	Exports empty-view CSS class constants for reuse by AI Chat integration.
packages/devextreme/js/__internal/grids/grid_core/m_types.ts	Extends aiAssistant options typing with popup/chat option bags.
packages/devextreme/js/__internal/grids/grid_core/ai_chat/types.ts	Simplifies AIChatOptions to rely on popupOptions/chatOptions rather than bespoke callbacks.
packages/devextreme/js/__internal/grids/grid_core/ai_chat/const.ts	Introduces default Popup/Chat options and the clear-chat icon constant.
packages/devextreme/js/__internal/grids/grid_core/ai_chat/ai_chat.ts	Builds default chat config (empty view template), adds clear button, and supports option updates.
packages/devextreme/js/__internal/grids/grid_core/ai_chat/ai_chat.test.ts	Updates/extends tests for clear button presence and updateOptions behavior.
packages/devextreme/js/__internal/grids/grid_core/ai_assistant/utils.ts	Adds helpers to detect which aiAssistant.* options changed.
packages/devextreme/js/__internal/grids/grid_core/ai_assistant/const.ts	Adds AI Assistant popup offset constant.
packages/devextreme/js/__internal/grids/grid_core/ai_assistant/ai_assistant_view.ts	Creates Popup/Chat option objects, message store, and handles aiAssistant option changes.
packages/devextreme/js/__internal/grids/grid_core/ai_assistant/ai_assistant_view_controller.ts	Syncs toolbar item and active state based on AI Assistant visibility and option changes.
packages/devextreme/js/__internal/grids/grid_core/ai_assistant/tests/utils.test.ts	Adds Jest coverage for option-change helper predicates.
packages/devextreme/js/__internal/grids/grid_core/ai_assistant/tests/ai_assistant_view.test.ts	Updates tests for new Popup/Chat config wiring and optionChanged behavior.
packages/devextreme/js/__internal/grids/grid_core/ai_assistant/tests/ai_assistant_view_controller.test.ts	Updates tests for subscription behavior and enabled/title option handling.

[Copilot]

Pull request overview

Copilot reviewed 20 out of 20 changed files in this pull request and generated 5 comments.

[Copilot]

Pull request overview

Copilot reviewed 20 out of 20 changed files in this pull request and generated 4 comments.