75 lines
2.3 KiB
Swift
75 lines
2.3 KiB
Swift
//
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// Widget.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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/// A widget is a view that know about its GTUI widget.
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public protocol Widget: AnyView {
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/// The debug tree parameters.
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var debugTreeParameters: [(String, value: CustomStringConvertible)] { get }
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/// The debug tree's content.
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var debugTreeContent: [(String, body: Body)] { get }
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/// The view storage.
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/// - Parameters:
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/// - modifiers: Modify views before being updated.
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/// - type: The type of the widgets.
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func container<WidgetType>(modifiers: [(AnyView) -> AnyView], type: WidgetType.Type) -> ViewStorage
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/// Update the stored content.
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/// - Parameters:
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/// - storage: The storage to update.
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/// - modifiers: Modify views before being updated
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/// - updateProperties: Whether to update the view's properties.
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/// - type: The type of the widgets.
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func update<WidgetType>(
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_ storage: ViewStorage,
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modifiers: [(AnyView) -> AnyView],
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updateProperties: Bool,
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type: WidgetType.Type
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)
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}
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extension Widget {
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/// A widget's view is empty.
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public var viewContent: Body { [] }
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/// A description of the view.
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public func getViewDescription<WidgetType>(
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parameters: Bool,
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type: WidgetType.Type,
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modifiers: [(AnyView) -> AnyView]
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) -> String {
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let oldValue = StateManager.saveState
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StateManager.saveState = false
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defer {
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StateManager.saveState = oldValue
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}
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var content = ""
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for element in debugTreeContent {
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if content.isEmpty {
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content += """
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{
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\(indented: element.body.getDebugTree(parameters: parameters, type: type, modifiers: modifiers))
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}
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"""
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} else {
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content += """
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\(element.0): {
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\(indented: element.body.getDebugTree(parameters: parameters, type: type, modifiers: modifiers))
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}
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"""
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}
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}
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if parameters {
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let parametersString = debugTreeParameters.map { "\($0.0): \($0.value)" }.joined(separator: ", ")
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return "\(Self.self)(\(parametersString))\(content)"
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}
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return "\(Self.self)\(content)"
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}
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}
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