95 lines
2.9 KiB
Swift
95 lines
2.9 KiB
Swift
//
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// AnyView.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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/// The view type used for any form of a view.
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public protocol AnyView {
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/// The view's content.
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@ViewBuilder var viewContent: Body { get }
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}
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/// Extend any view.
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extension AnyView {
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/// Get the view with modifications applied.
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/// - Parameters:
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/// - data:
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func getModified<Data>(data: WidgetData, type: Data.Type) -> AnyView where Data: ViewRenderData {
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var modified: AnyView = self
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for modifier in data.modifiers {
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modified = modifier(modified)
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}
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return modified
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}
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/// Update a storage to a view.
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/// - Parameters:
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/// - storage: The storage.
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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 view render data type.
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public func updateStorage<Data>(
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_ storage: 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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widget(data: data, type: type)
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.update(storage, data: data, updateProperties: updateProperties, type: type)
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}
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/// Get a storage.
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/// - Parameters:
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/// - data: Modify views before being updated.
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/// - type: The widget types.
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/// - Returns: The storage.
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public func storage<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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widget(data: data, type: type).container(data: data, type: type)
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}
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/// Wrap the view into a widget.
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/// - Parameter data: Modify views before being updated.
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/// - Returns: The widget.
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func widget<Data>(data: WidgetData, type: Data.Type) -> Widget where Data: ViewRenderData {
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let modified = getModified(data: data, type: type)
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if let peer = modified as? Widget {
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return peer
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}
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if let array = modified as? Body {
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return Data.WrapperType { array }
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}
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return Data.WrapperType { viewContent.map { $0.getModified(data: data, type: type) } }
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}
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/// Whether the view can be rendered in a certain environment.
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func renderable<Data>(type: Data.Type, data: WidgetData) -> Bool where Data: ViewRenderData {
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let result = getModified(data: data, type: type)
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return result as? Data.WidgetType != nil
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|| result as? SimpleView != nil
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|| result as? View != nil
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|| result as? ConvenienceWidget != nil
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|| result as? Body != nil
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}
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/// Apply a modification onto a view.
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/// - Parameter action: The modifications.
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/// - Returns: The modified view.
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public func modify(action: (inout Self) -> Void) -> Self {
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var newSelf = self
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action(&newSelf)
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return newSelf
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}
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}
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/// `Body` is an array of views.
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public typealias Body = [AnyView]
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