david-swift
a53b4e084b
- Whether it is collapsed - Whether the content is visible if it is collapsed
113 lines
4.4 KiB
Swift
113 lines
4.4 KiB
Swift
//
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// NavigationSplitView.swift
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// Adwaita
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//
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// Created by david-swift on 24.09.23.
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//
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import CAdw
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/// A navigation split view widget.
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public struct NavigationSplitView: Widget {
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/// The sidebar's content.
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var sidebar: () -> Body
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/// The split view's main content.
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var content: () -> Body
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/// Whether the split view is collapsed.
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var collapsed = false
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/// Whether the content is visible (if the split view is collapsed).
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var showContent: Binding<Bool>?
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/// The sidebar content's id.
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let sidebarID = "sidebar"
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/// The main content's id.
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let contentID = "content"
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/// Initialize a navigation split view.
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/// - Parameters:
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/// - sidebar: The sidebar content.
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/// - content: The main content.
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public init(@ViewBuilder sidebar: @escaping () -> Body, @ViewBuilder content: @escaping () -> Body) {
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self.sidebar = sidebar
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self.content = content
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}
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/// Get the container of the navigation split view widget.
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/// - Parameter modifiers: Modify views before being updated.
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/// - Returns: The view storage.
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public func container(modifiers: [(View) -> View]) -> ViewStorage {
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let splitView = adw_navigation_split_view_new()
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var content: [String: [ViewStorage]] = [:]
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let sidebar = sidebar().widget(modifiers: modifiers).container(modifiers: modifiers)
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let label = sidebar.fields[.navigationLabel] as? String ?? ""
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let sidebarPage = adw_navigation_page_new(sidebar.pointer?.cast(), label)
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adw_navigation_split_view_set_sidebar(.init(splitView), sidebarPage?.cast())
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content[sidebarID] = [sidebar]
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let mainContent = self.content().widget(modifiers: modifiers).container(modifiers: modifiers)
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let mainLabel = mainContent.fields[.navigationLabel] as? String ?? ""
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let mainPage = adw_navigation_page_new(mainContent.pointer?.cast(), mainLabel)
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adw_navigation_split_view_set_content(.init(splitView), mainPage?.cast())
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content[contentID] = [mainContent]
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let storage = ViewStorage(.init(splitView), content: content)
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update(storage, modifiers: modifiers, updateProperties: true)
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storage.notify(name: "show-content") {
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showContent?.wrappedValue = adw_navigation_split_view_get_show_content(storage.pointer) != 0
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}
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return storage
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}
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/// Update the view storage of the navigation split view widget.
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/// - Parameters:
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/// - storage: The view storage.
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/// - modifiers: Modify views before being updated.
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/// - updateProperties: Whether to update properties.
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public func update(_ storage: ViewStorage, modifiers: [(View) -> View], updateProperties: Bool) {
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if let storage = storage.content[contentID]?[safe: 0] {
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content()
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.widget(modifiers: modifiers)
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.update(storage, modifiers: modifiers, updateProperties: updateProperties)
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}
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if let storage = storage.content[sidebarID]?[safe: 0] {
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sidebar()
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.widget(modifiers: modifiers)
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.update(storage, modifiers: modifiers, updateProperties: updateProperties)
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}
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guard updateProperties else {
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return
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}
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let collapsed = adw_navigation_split_view_get_collapsed(storage.pointer) != 0
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if collapsed != self.collapsed {
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adw_navigation_split_view_set_collapsed(storage.pointer, self.collapsed.cBool)
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}
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let showContent = adw_navigation_split_view_get_show_content(storage.pointer) != 0
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if let binding = self.showContent, showContent != binding.wrappedValue {
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adw_navigation_split_view_set_show_content(storage.pointer, binding.wrappedValue.cBool)
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}
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}
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/// Whether the navigation split view is collapsed, meaning in its compact form.
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/// - Parameter collapsed: Whether the view is collapsed.
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/// - Returns: The navigation split view.
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public func collapsed(_ collapsed: Bool) -> Self {
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var newSelf = self
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newSelf.collapsed = collapsed
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return newSelf
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}
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/// Whether the content view is visible if the split view is collapsed.
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/// - Parameter showContent: Whether the content view is visible.
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/// - Returns: The navigation split view.
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public func showContent(_ showContent: Binding<Bool>) -> Self {
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var newSelf = self
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newSelf.showContent = showContent
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return newSelf
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}
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}
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