47 lines
1.2 KiB
Swift
47 lines
1.2 KiB
Swift
//
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// Freeze.swift
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// Adwaita
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//
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// Created by david-swift on 13.02.24.
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//
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/// State whether to update the child views or not.
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struct Freeze: Widget {
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/// Whether not to update the child view.
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var freeze: Bool
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/// The wrapped view.
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var content: View
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/// Get the content's container.
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/// - Parameter modifiers: Modify views before being updated.
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/// - Returns: The content's container.
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func container(modifiers: [(View) -> View]) -> ViewStorage {
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let storage = content.storage(modifiers: [])
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return storage
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}
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/// Update the content.
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/// - Parameters:
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/// - storage: The content's storage.
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/// - modifiers: Modify views before being updated.
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/// - updateProperties: Whether to update properties.
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func update(_ storage: ViewStorage, modifiers: [(View) -> View], updateProperties: Bool) {
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if !freeze {
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content.updateStorage(storage, modifiers: [], updateProperties: updateProperties)
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}
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}
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}
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extension View {
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/// Prevent a view from being updated.
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/// - Parameter freeze: Whether to freeze the view.
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/// - Returns: A view.
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public func freeze(_ freeze: Bool = true) -> View {
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Freeze(freeze: freeze, content: self)
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}
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}
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