# feature:
## In Browser:
- hidden back&forward button in sidebar.
- back and forward is equal with `window.history.back()` `window.history.forward()`
## In Desktop:
- Back and forward can be controlled through the sidebar, cmdk, and shortcut keys.
- back and forward act on the currently **active** view.
- buttons change disable&enable style based on current active view history
# Refactor:
Move app-sidebar and app-container from @affine/component to @affine/core
* move @toeverything/hooks -> @affine/core/hooks
* delete @toeverything/hooks
hooks are all business-related logic and are deeply coupled with other parts.
Move them into the core and then reconstruct them by feature.
Added the ability to drag page items from the `all pages` view to the sidebar, including `favourites,` `collection` and `trash`. Page items in `favourites` and `collection` can also be dragged between each other. However, linked subpages cannot be dragged.
Additionally, an operation menu and ‘add’ button have been provided for the sidebar’s page items, enabling the addition of a subpage, renaming, deletion or removal from the sidebar.
On the code front, the `useSidebarDrag` hooks have been implemented for consolidating drag events. The functions `getDragItemId` and `getDropItemId` have been created, and they accept type and ID to obtain itemId.
https://github.com/toeverything/AFFiNE/assets/102217452/d06bac18-3c28-41c9-a7d4-72de955d7b11
Refactor AFFiNE layout to support new right sidebar.
The new layout:
**Highlights:**
- new sidebar UI/UX
- favoring top-down UI components that are composed by basic building blocks in each route, instead of creating universal component like `WorkspaceHeader` that renders every possible cases (which I think is really hard to maintain)
- remove plugin based solution
**Pros/cons for current plugin-based solution:**
The current solution is somewhat a Dependency Injection (DI) approach, where the layout is defined at the top and UI items can be injected using Jotai atom slots.
This approach works well if we want a fully configurable system with everything being handled by plugins. It provides flexibility for custom extensions.
However, this solution is more suitable for single-page applications where the UI is completely controlled by configuration. It becomes challenging to achieve an optimized and visually appealing UI that remains under our control. An example of such a scenario would be a customizable dashboard like Grafana.
Another drawback of the existing solution is that we need to use Jotai and hooks to access context values, resulting in an unclear data flow within the component hierarchy.
**Alternatively, our approach in this PR** provides layout building blocks such as headers and sidebars, which can then be composed in individual route components. The good is that we have cleaner biz component instead of vague all-in-one layout component (like `<WorkspaceHeader />`).
**Issues of the implementation in this PR:**
Some UI layouts that that seems to be defined at the root layout are now defined in individual route component instead.
New 3-col layout component like the right sidebar still needs some abstraction and they are right now just for the detail editor only.
This pr implements a blob engine.
It exposes a single `BlobStorage` to the `blocksuite`, and in it we sync blobs between multiple storages.
The implement still have few issues, but we can merge this pr first and fix them in future.
* BlobEngine currently **do nothing when delete**, because synchronization logic conflicts with deletion logic.
* BlobEngine sync between storages by querying the blob list at regular intervals. This will **cause many queries**, we can avoid this in the future by subscribing to remote changes.
1. Split logic in `packages/common/infra/src/blocksuite/index.ts` to multiple single files
2. Move migration logic from setup to upgrade module, to prevent auto migration problems and loading problem
