Add theming support, and support for other top level configuration to swiftui views with VectorHostingViewController, VectorContentModifier. Add VisibilityModifier. Move from List to VStack.

2026-04-21 00:52:43 +02:00 · 2021-08-12 11:52:06 +01:00
parent 9570a9422b
commit 9ff69eaaf0
29 changed files with 841 additions and 213 deletions
@@ -0,0 +1,57 @@
+// 
+// Copyright 2021 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import Foundation
+import SwiftUI
+
+/**
+ Used to modify the visibilty of a SwiftUI view.
+ `hidden` naming historically on iOS refers to a view that is not visible but is included in layout/constraints. i.e. takes up the space.
+ `gone` here refers to a view that is invisible and does not contribute to layout. Android uses the same naming as this.
+ */
+@available(iOS 14.0, *)
+enum Visbility: Int {
+    case visible
+    case hidden
+    case gone
+}
+
+@available(iOS 14.0, *)
+struct VisbilityModifier: ViewModifier {
+    var visibilty: Visbility
+    func body(content: Content) -> some View {
+        if visibilty == .visible {
+            content
+        } else if visibilty == .hidden {
+            content.hidden()
+        }
+    }
+}
+
+@available(iOS 14.0, *)
+extension View {
+    func hidden(_ invisible: Bool) -> some View {
+        self.modifier(VisbilityModifier(visibilty: invisible ? .hidden : .visible))
+    }
+
+    func gone(_ hidden: Bool) -> some View {
+        self.modifier(VisbilityModifier(visibilty: hidden ? .gone : .visible))
+    }
+    
+    func visbility(_ visibility: Visbility) -> some View {
+        self.modifier(VisbilityModifier(visibilty: visibility))
+    }
+}