118 lines
3.4 KiB
Swift
118 lines
3.4 KiB
Swift
//
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// Array.swift
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// Meta
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//
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// Created by david-swift on 26.05.24.
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//
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import Foundation
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/// Extend arrays.
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extension Array: AnyView where Element == AnyView {
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/// The array's view body is the array itself.
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public var viewContent: Body { self }
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/// Get a widget from a collection of views.
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/// - Parameters:
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/// - data: Modify views before being updated.
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/// - type: The app storage type.
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/// - Returns: A widget.
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public func widget<Data>(
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data: WidgetData,
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type: Data.Type
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) -> Widget where Data: ViewRenderData {
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if count == 1, let widget = self[safe: 0]?.widget(data: data, type: type) {
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return widget
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} else {
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var modified = self
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for (index, view) in modified.enumerated() {
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modified[safe: index] = view.getModified(data: data, type: type)
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}
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return Data.WrapperType { modified }
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}
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}
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/// Update a collection of views with a collection of view storages.
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/// - Parameters:
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/// - storages: The collection of view storages.
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/// - data: Modify views before being updated.
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/// - updateProperties: Whether to update properties.
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/// - type: The type of the app storage.
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public func update<Data>(
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_ storages: [ViewStorage],
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data: WidgetData,
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updateProperties: Bool,
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type: Data.Type
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) where Data: ViewRenderData {
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for (index, element) in filter({ $0.renderable(type: type, data: data) }).enumerated() {
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if let storage = storages[safe: index] {
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element
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.widget(data: data, type: type)
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.updateStorage(storage, data: data, updateProperties: updateProperties, type: type)
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}
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}
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}
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/// Get the view storages of a collection of views.
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/// - Parameters:
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/// - data: Modify views before generating the storages.
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/// - type: The type of the app storage.
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/// - Returns: The storages.
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public func storages<Data>(
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data: WidgetData,
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type: Data.Type
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) -> [ViewStorage] where Data: ViewRenderData {
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compactMap { view in
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view.renderable(type: type, data: data) ? view.storage(data: data, type: type) : nil
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}
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}
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}
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/// Extend arrays.
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extension Array {
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/// Accesses the element at the specified position safely.
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/// - Parameters:
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/// - index: The position of the element to access.
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///
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/// Access and set elements the safe way:
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/// ```swift
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/// var array = ["Hello", "World"]
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/// print(array[safe: 2] ?? "Out of range")
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/// ```
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public subscript(safe index: Int?) -> Element? {
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get {
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if let index, indices.contains(index) {
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return self[index]
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}
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return nil
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}
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set {
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if let index, let value = newValue, indices.contains(index) {
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self[index] = value
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}
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}
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}
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}
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/// Extend arrays.
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extension Array where Element: Identifiable {
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/// Accesses the element with a certain id safely.
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/// - Parameters:
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/// - id: The child's id.
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///
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/// Access and set elements the safe way:
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/// ```swift
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/// var array = ["Hello", "World"]
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/// print(array[safe: 2] ?? "Out of range")
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/// ```
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public subscript(id id: Element.ID) -> Element? {
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self[safe: firstIndex { $0.id == id }]
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}
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}
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