85 lines
2.9 KiB
Swift
85 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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extension AnyView {
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/// Get the view's debug tree.
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/// - Parameter parameters: Whether the widget parameters should be included in the debug tree.
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/// - Returns: A textual description.
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public func getDebugTree<WidgetType>(parameters: Bool, type: WidgetType.Type) -> String {
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if let body = self as? Body {
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return body.getBodyDebugTree(parameters: parameters, type: type)
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}
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return """
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\(Self.self) {
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\(indented: viewContent.getBodyDebugTree(parameters: parameters, type: type))
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}
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"""
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}
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func getModified(modifiers: [(AnyView) -> AnyView]) -> AnyView {
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var modified: AnyView = self
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for modifier in 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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/// - modifiers: Modify views before being updated.
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/// - updateProperties: Whether to update properties.
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/// - type: The type of the widgets.
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public func updateStorage<WidgetType>(_ storage: ViewStorage, modifiers: [(AnyView) -> AnyView], updateProperties: Bool, type: WidgetType.Type) {
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let modified = getModified(modifiers: modifiers)
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if let widget = modified as? Widget {
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widget.update(storage, modifiers: modifiers, updateProperties: updateProperties, type: type)
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} else {
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Wrapper { viewContent }
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.update(storage, modifiers: modifiers, updateProperties: updateProperties, type: type)
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}
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}
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/// Get a storage.
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/// - Parameters:
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/// - modifiers: 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<WidgetType>(modifiers: [(AnyView) -> AnyView], type: WidgetType.Type) -> ViewStorage {
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widget(modifiers: modifiers).container(modifiers: modifiers, type: type)
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}
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/// Wrap the view into a widget.
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/// - Parameter modifiers: Modify views before being updated.
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/// - Returns: The widget.
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public func widget(modifiers: [(AnyView) -> AnyView]) -> Widget {
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let modified = getModified(modifiers: modifiers)
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if let peer = modified as? Widget {
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return peer
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}
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return Wrapper { viewContent }
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}
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/// Whether the view can be rendered in a certain environment.
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func renderable<WidgetType>(type: WidgetType.Type) -> Bool {
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self as? WidgetType != nil || self as? SimpleView != nil || self as? View != nil || self as? ConvenienceWidget != nil
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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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