Chat FU: Integrate FileView component

[r-farkhutdinov]

No description provided.

[Copilot]

Pull Request Overview

This PR integrates the FileView component into the Chat MessageBubble to support displaying file attachments. The implementation adds an attachments container to message bubbles and introduces the onAttachmentDownload callback that propagates from Chat through MessageList and MessageGroup down to MessageBubble.

Key changes:

• Added FileView integration to MessageBubble with new attachments container and rendering logic
• Implemented onAttachmentDownload event handler propagation through the component hierarchy
• Updated styling to use CSS Grid layout for file attachments with configurable spacing

Reviewed Changes

Copilot reviewed 17 out of 17 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
packages/devextreme/testing/tests/DevExpress.ui.widgets/chatParts/messageBubble.tests.js	Added comprehensive tests for FileView rendering, attachments handling, and download callback
packages/devextreme/testing/tests/DevExpress.ui.widgets/chatParts/messageBubble.markup.tests.js	Added test verifying attachments container element exists in markup
packages/devextreme/testing/tests/DevExpress.ui.widgets/chatParts/chat.tests.js	Added tests for onAttachmentDownload event handling at Chat component level
packages/devextreme/js/__internal/ui/chat/messagelist.ts	Added onAttachmentDownload property and propagated it to MessageGroup
packages/devextreme/js/__internal/ui/chat/messagegroup.ts	Added onAttachmentDownload property and passed it to MessageBubble options
packages/devextreme/js/__internal/ui/chat/messagebubble.ts	Core implementation: added attachments container, FileView integration, and attachment rendering logic
packages/devextreme/js/__internal/ui/chat/file_view/file_view.ts	Removed unused CHAT_FILE_VIEW_ITEM_CLASS constant
packages/devextreme/js/__internal/ui/chat/file_view/file.ts	Exported CHAT_FILE_NAME_CLASS and CHAT_FILE_SIZE_CLASS constants for testing
packages/devextreme/js/__internal/ui/chat/chat.ts	Added onAttachmentDownload action creation, handler, and option change handling
packages/devextreme-scss/scss/widgets/material/chat/_sizes.scss	Added $chat-file-view-margin-top variable
packages/devextreme-scss/scss/widgets/material/chat/_index.scss	Updated chat-fileview mixin call with new parameters
packages/devextreme-scss/scss/widgets/generic/chat/_sizes.scss	Added $chat-file-view-margin-top variable
packages/devextreme-scss/scss/widgets/generic/chat/_index.scss	Updated chat-fileview mixin call with new parameters
packages/devextreme-scss/scss/widgets/fluent/chat/_sizes.scss	Added $chat-file-view-margin-top variable
packages/devextreme-scss/scss/widgets/fluent/chat/_index.scss	Updated chat-fileview mixin call with new parameters
packages/devextreme-scss/scss/widgets/base/chat/layout/chat-fileview/_mixins.scss	Added margin-top and grid-template-columns to fileview mixin
packages/devextreme-scss/scss/widgets/base/chat/layout/chat-fileview/_index.scss	Changed layout from flex to grid display

[Copilot]

Pull Request Overview

Copilot reviewed 19 out of 19 changed files in this pull request and generated 2 comments.

Comments suppressed due to low confidence (1)

packages/devextreme/js/__internal/ui/chat/messagegroup.ts:1

• [nitpick] The order of properties has changed without an apparent reason. Properties should maintain consistent ordering to match the original structure and improve code readability.

import type { Format } from '@js/common/core/localization';

[Copilot]

Pull Request Overview

Copilot reviewed 19 out of 19 changed files in this pull request and generated 2 comments.

[Copilot]

Pull Request Overview

Copilot reviewed 19 out of 19 changed files in this pull request and generated 1 comment.

[Copilot]

Pull Request Overview

Copilot reviewed 19 out of 19 changed files in this pull request and generated no new comments.