1. 29 Sep, 2023 1 commit
  2. 20 Sep, 2023 2 commits
  3. 19 Sep, 2023 1 commit
    • Greg Spencer's avatar
      Remove 'must be non-null' and 'must not be null' comments from non-framework libraries (#134994) · 4ce7fdd9
      Greg Spencer authored
      ## Description
      
      This removes all of the comments that are of the form "so-and-so must not be null" or "so-and-so must be non-null" from the cases where those values are defines as non-nullable values.
      
      This PR removes them from the library in the repo that don't have anything to do with the framework.
      
      This was done by hand, since it really didn't lend itself to scripting, so it needs to be more than just spot-checked, I think. I was careful to leave any comment that referred to parameters that were nullable, but I may have missed some.
      
      In addition to being no longer relevant after null safety has been made the default, these comments were largely fragile, in that it was easy for them to get out of date, and not be accurate anymore anyhow.
      
      This did create a number of constructor comments which basically say "Creates a [Foo].", but I don't really know how to avoid that in a large scale change, since there's not much you can really say in a lot of cases.  I think we might consider some leniency for constructors to the "Comment must be meaningful" style guidance (which we de facto have already, since there are a bunch of these).
      
      ## Related PRs
      - https://github.com/flutter/flutter/pull/134984
      - https://github.com/flutter/flutter/pull/134991
      - https://github.com/flutter/flutter/pull/134992
      - https://github.com/flutter/flutter/pull/134993
      
      ## Tests
       - Documentation only change.
      4ce7fdd9
  4. 13 Sep, 2023 1 commit
  5. 12 Sep, 2023 1 commit
  6. 31 Aug, 2023 1 commit
  7. 27 Jul, 2023 1 commit
  8. 17 Jul, 2023 1 commit
    • Michael Goderbauer's avatar
      Stand-alone widget tree with multiple render trees to enable multi-view rendering (#125003) · 6f09064e
      Michael Goderbauer authored
      This change enables Flutter to generate multiple Scenes to be rendered into separate FlutterViews from a single widget tree. Each Scene is described by a separate render tree, which are all associated with the single widget tree.
      
      This PR implements the framework-side mechanisms to describe the content to be rendered into multiple views. Separate engine-side changes are necessary to provide these views to the framework and to draw the framework-generated Scene into them.
      
      ## Summary of changes
      
      The details of this change are described in [flutter.dev/go/multiple-views](https://flutter.dev/go/multiple-views). Below is a high-level summary organized by layers.
      
      ### Rendering layer changes
      
      * The `RendererBinding` no longer owns a single `renderView`. In fact, it doesn't OWN any `RenderView`s at all anymore. Instead, it offers an API (`addRenderView`/`removeRenderView`) to add and remove `RenderView`s that then will be MANAGED by the binding. The `RenderView` itself is now owned by a higher-level abstraction (e.g. the `RawView` Element of the widgets layer, see below), who is also in charge of adding it to the binding. When added, the binding will interact with the `RenderView` to produce a frame (e.g. by calling `compositeFrame` on it) and to perform hit tests for incoming pointer events. Multiple `RenderView`s can be added to the binding (typically one per `FlutterView`) to produce multiple Scenes.
      * Instead of owning a single `pipelineOwner`, the `RendererBinding` now owns the root of the `PipelineOwner` tree (exposed as `rootPipelineOwner` on the binding). Each `PipelineOwner` in that tree (except for the root) typically manages its own render tree typically rooted in one of the `RenderView`s mentioned in the previous bullet. During frame production, the binding will instruct each `PipelineOwner` of that tree to flush layout, paint, semantics etc. A higher-level abstraction (e.g. the widgets layer, see below) is in charge of adding `PipelineOwner`s to this tree.
      * Backwards compatibility: The old `renderView` and `pipelineOwner` properties of the `RendererBinding` are retained, but marked as deprecated. Care has been taken to keep their original behavior for the deprecation period, i.e. if you just call `runApp`, the render tree bootstrapped by this call is rooted in the deprecated `RendererBinding.renderView` and managed by the deprecated `RendererBinding.pipelineOwner`.
      
      ### Widgets layer changes
      
      * The `WidgetsBinding` no longer attaches the widget tree to an existing render tree. Instead, it bootstraps a stand-alone widget tree that is not backed by a render tree. For this, `RenderObjectToWidgetAdapter` has been replaced by `RootWidget`.
      * Multiple render trees can be bootstrapped and attached to the widget tree with the help of the `View` widget, which internally is backed by a `RawView` widget. Configured with a `FlutterView` to render into, the `RawView` creates a new `PipelineOwner` and a new `RenderView` for the new render tree. It adds the new `RenderView` to the `RendererBinding` and its `PipelineOwner` to the pipeline owner tree.
      * The `View` widget can only appear in certain well-defined locations in the widget tree since it bootstraps a new render tree and does not insert a `RenderObject` into an ancestor. However, almost all Elements expect that their children insert `RenderObject`s, otherwise they will not function properly. To produce a good error message when the `View` widget is used in an illegal location, the `debugMustInsertRenderObjectIntoSlot` method has been added to Element, where a child can ask whether a given slot must insert a RenderObject into its ancestor or not. In practice, the `View` widget can be used as a child of the `RootWidget`, inside the `view` slot of the `ViewAnchor` (see below) and inside a `ViewCollection` (see below). In those locations, the `View` widget may be wrapped in other non-RenderObjectWidgets (e.g. InheritedWidgets).
      * The new `ViewAnchor` can be used to create a side-view inside a parent `View`. The `child` of the `ViewAnchor` widget renders into the parent `View` as usual, but the `view` slot can take on another `View` widget, which has access to all inherited widgets above the `ViewAnchor`. Metaphorically speaking, the view is anchored to the location of the `ViewAnchor` in the widget tree.
      * The new `ViewCollection` widget allows for multiple sibling views as it takes a list of `View`s as children. It can be used in all the places that accept a `View` widget.
      
      ## Google3
      
      As of July 5, 2023 this change passed a TAP global presubmit (TGP) in google3: tap/OCL:544707016:BASE:545809771:1688597935864:e43dd651
      
      ## Note to reviewers
      
      This change is big (sorry). I suggest focusing the initial review on the changes inside of `packages/flutter` first. The majority of the changes describe above are implemented in (listed in suggested review order):
      
      * `rendering/binding.dart`
      * `widgets/binding.dart`
      * `widgets/view.dart`
      * `widgets/framework.dart`
      
      All other changes included in the PR are basically the fallout of what's implemented in those files. Also note that a lot of the lines added in this PR are documentation and tests.
      
      I am also very happy to walk reviewers through the code in person or via video call, if that is helpful.
      
      I appreciate any feedback.
      
      ## Feedback to address before submitting ("TODO")
      6f09064e
  9. 07 Jul, 2023 1 commit
  10. 05 Jul, 2023 1 commit
  11. 20 Jun, 2023 1 commit
  12. 15 Jun, 2023 1 commit
  13. 07 Jun, 2023 1 commit
    • Michael Goderbauer's avatar
      Refactor tests (#128371) · 6221d5c7
      Michael Goderbauer authored
      To make them a little more resilient to changes in the tree shape as the tree will be changing a little bit for multi view.
      6221d5c7
  14. 31 May, 2023 1 commit
  15. 30 May, 2023 1 commit
  16. 19 May, 2023 1 commit
  17. 16 May, 2023 1 commit
  18. 08 May, 2023 1 commit
  19. 06 May, 2023 1 commit
  20. 02 May, 2023 1 commit
    • Jenn Magder's avatar
      Migrate Xcode projects last version checks to Xcode 14.3 (#125827) · 1861ac47
      Jenn Magder authored
      1. Add iOS and macOS migration to mark "last upgraded" Xcode version to 14.3 to prevent `Update to recommended settings` warning.
      2. Update iOS and macOS templates to same.
      3. Update iOS template to set `BuildIndependentTargetsInParallel` to YES as suggested.  I didn't add a migration for this since it seems like a minor optimization and I don't think it's worth a potentially botched/corrupted migration.
      4. Run all example/integration test project to see migrator work.
      5. Add some missing test projects to the build shard since I noticed they were missing and I had to build those manually outside `SHARD=build_tests`.
      
      Fixes https://github.com/flutter/flutter/issues/125817
      See https://github.com/flutter/flutter/pull/90304 for Xcode 13 example.
      1861ac47
  21. 20 Apr, 2023 2 commits
  22. 10 Apr, 2023 1 commit
  23. 07 Apr, 2023 1 commit
  24. 05 Apr, 2023 1 commit
  25. 03 Apr, 2023 1 commit
  26. 29 Mar, 2023 1 commit
  27. 28 Mar, 2023 1 commit
  28. 23 Mar, 2023 1 commit
  29. 21 Mar, 2023 3 commits
  30. 17 Mar, 2023 2 commits
  31. 16 Mar, 2023 1 commit
  32. 23 Feb, 2023 1 commit
  33. 18 Feb, 2023 1 commit
  34. 17 Feb, 2023 1 commit
  35. 02 Feb, 2023 1 commit