mirror of
https://github.com/Instagram/IGListKit
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f92b9339ee
Summary: The standardized Meta copyright notice is "Copyright (c) Meta Platforms, Inc. and affiliates." and not "Copyright (c) Meta Platforms, Inc. and its affiliates." (Dropping the "its") This diff updates the copyright notice in each source file to the correct this. Reviewed By: willbailey Differential Revision: D44737667 fbshipit-source-id: 643bf36df76723e70d9d826c53cf8f29b8a0c8cc
37 lines
1.6 KiB
Swift
37 lines
1.6 KiB
Swift
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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import IGListKit
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/// A generic section controller that supports any Swift value conforming to `ListIdentifiable`.
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///
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/// For a type-safe base class for `ListDiffable` objects, see `ListGenericSectionController` instead.
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///
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/// `ListValueSectionController` is an experimental, under-development API, and may change without warning in the future.
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open class ListValueSectionController<Value: ListIdentifiable>: ListSectionController {
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/// The section controller's current value.
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///
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/// This value will be `nil` temporarily after initialization, but is exposed as an implicitly-unwrapped
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/// optional because it will be set by `didUpdate(to:)` before any other methods, like `cellForItem(at:)`,
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/// are invoked.
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public private(set) var value: Value!
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/// Subclasses of `ListValueSectionController` may not override `didUpdate(to:)` for objects.
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/// Instead, they must use the overload for generic values.
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public final override func didUpdate(to object: Any) {
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guard let value = Value(diffable: object) else {
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fatalError("Expected object for value section controller to be a boxed \(Value.self), but it was \(object)")
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}
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self.value = value
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didUpdate(to: value)
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}
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/// Updates the section controller to a new value.
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///
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/// Subclasses of `ListValueSectionController` may override this method. Calling `super` is not required.
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open func didUpdate(to value: Value) {}
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}
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