106 lines
3.5 KiB
Swift
106 lines
3.5 KiB
Swift
//
|
|
// AnyView.swift
|
|
// Meta
|
|
//
|
|
// Created by david-swift on 26.05.24.
|
|
//
|
|
|
|
/// The view type used for any form of a view.
|
|
public protocol AnyView {
|
|
|
|
/// The view's content.
|
|
@ViewBuilder var viewContent: Body { get }
|
|
|
|
}
|
|
|
|
extension AnyView {
|
|
|
|
/// Get the view's debug tree.
|
|
/// - Parameters:
|
|
/// - parameters: Whether the widget parameters should be included in the debug tree.
|
|
/// - type: The widget type.
|
|
/// - modifiers: Modify the view before getting the debug tree.
|
|
/// - Returns: A textual description.
|
|
public func getDebugTree<WidgetType>(
|
|
parameters: Bool,
|
|
type: WidgetType.Type,
|
|
modifiers: [(AnyView) -> AnyView] = []
|
|
) -> String {
|
|
if let body = getModified(modifiers: modifiers) as? Body {
|
|
return body.getBodyDebugTree(parameters: parameters, type: type, modifiers: modifiers)
|
|
} else if let widget = getModified(modifiers: modifiers) as? Widget {
|
|
return widget.getViewDescription(parameters: parameters, type: type, modifiers: modifiers)
|
|
}
|
|
return """
|
|
\(Self.self) {
|
|
\(indented: viewContent
|
|
.map { view in
|
|
view.getModified(modifiers: modifiers)
|
|
}
|
|
.getBodyDebugTree(parameters: parameters, type: type, modifiers: modifiers))
|
|
}
|
|
"""
|
|
}
|
|
|
|
func getModified(modifiers: [(AnyView) -> AnyView]) -> AnyView {
|
|
var modified: AnyView = self
|
|
for modifier in modifiers {
|
|
modified = modifier(modified)
|
|
}
|
|
return modified
|
|
}
|
|
|
|
/// Update a storage to a view.
|
|
/// - Parameters:
|
|
/// - storage: The storage.
|
|
/// - modifiers: Modify views before being updated.
|
|
/// - updateProperties: Whether to update properties.
|
|
/// - type: The type of the widgets.
|
|
public func updateStorage<WidgetType>(
|
|
_ storage: ViewStorage,
|
|
modifiers: [(AnyView) -> AnyView],
|
|
updateProperties: Bool,
|
|
type: WidgetType.Type
|
|
) {
|
|
widget(modifiers: modifiers)
|
|
.update(storage, modifiers: modifiers, updateProperties: updateProperties, type: type)
|
|
}
|
|
|
|
/// Get a storage.
|
|
/// - Parameters:
|
|
/// - modifiers: Modify views before being updated.
|
|
/// - type: The widget types.
|
|
/// - Returns: The storage.
|
|
public func storage<WidgetType>(modifiers: [(AnyView) -> AnyView], type: WidgetType.Type) -> ViewStorage {
|
|
widget(modifiers: modifiers).container(modifiers: modifiers, type: type)
|
|
}
|
|
|
|
/// Wrap the view into a widget.
|
|
/// - Parameter modifiers: Modify views before being updated.
|
|
/// - Returns: The widget.
|
|
public func widget(modifiers: [(AnyView) -> AnyView]) -> Widget {
|
|
let modified = getModified(modifiers: modifiers)
|
|
if let peer = modified as? Widget {
|
|
return peer
|
|
}
|
|
if let array = modified as? Body {
|
|
return Wrapper { array }
|
|
}
|
|
return Wrapper { viewContent.map { $0.getModified(modifiers: modifiers) } }
|
|
}
|
|
|
|
/// Whether the view can be rendered in a certain environment.
|
|
func renderable<WidgetType>(type: WidgetType.Type, modifiers: [(AnyView) -> AnyView]) -> Bool {
|
|
let result = getModified(modifiers: modifiers)
|
|
return result as? WidgetType != nil
|
|
|| result as? SimpleView != nil
|
|
|| result as? View != nil
|
|
|| result as? ConvenienceWidget != nil
|
|
|| result as? Body != nil
|
|
}
|
|
|
|
}
|
|
|
|
/// `Body` is an array of views.
|
|
public typealias Body = [AnyView]
|