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multica/apps
Naiyuan Qing 6901325761 fix(desktop): open HTML preview in background tab and close modal (MUL-2418) (#2854)
Two independent root causes made "Open in new tab" on a desktop
attachment-preview modal feel like "the popup is still there and the
current tab got replaced":

1. `AttachmentPreviewModal.handleOpenInNewTab` never called `onClose()`,
   so the modal stayed mounted over the new tab.
2. Both `DesktopNavigationProvider.openInNewTab` and
   `TabNavigationProvider.openInNewTab` called
   `store.setActiveTab(tabId)` after `store.openTab(...)`, which stole
   focus to the new tab — violating the type contract
   ("Desktop only: open a path in a new background tab") and matching
   neither Chrome's cmd+click default nor the user's expectation.

Fixes:
- Modal: always call `onClose()` after dispatching the navigation
  (desktop adapter path and web `window.open` fallback path).
- Desktop navigation: drop the post-`openTab` `setActiveTab` call in both
  providers. `openTab` already preserves `activeTabId` for new paths and
  switches to the existing tab when the path is already open, which is
  exactly the background-tab semantics the type contract advertises.

Tests:
- `attachment-preview-modal.test.tsx`: assert `onClose` is invoked on
  both the desktop and web fallback branches.
- `pageview-tracker.test.tsx`: rename the "openInNewTab / addTab" case
  so the comment no longer claims `openInNewTab` activates the new tab.
- New `apps/desktop/.../platform/navigation.test.tsx`: assert that
  `openInNewTab` on both providers calls `openTab` and never
  `setActiveTab` for same-workspace paths, and routes cross-workspace
  paths through `switchWorkspace`.

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>
Co-authored-by: multica-agent <github@multica.ai>
2026-05-19 16:45:18 +08:00
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