#43: Add the DesignKit package to the project.

* Add ElementTextFieldStyle and static style properties. * Rename button styles, support sizes and simplify colour.
2026-11-02 03:06:37 +00:00 · 2022-06-09 14:44:46 +01:00
parent 7a458377d6
commit 596cf2df0b
16 changed files with 366 additions and 163 deletions
@@ -0,0 +1,100 @@
+//
+// 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 SwiftUI
+import DesignTokens
+
+@available(iOS 15.0, *)
+public extension TextFieldStyle where Self == ElementTextFieldStyle {
+    static func elementInput(labelText: String? = nil,
+                             footerText: String? = nil,
+                             isError: Bool = false) -> ElementTextFieldStyle {
+        ElementTextFieldStyle(labelText: labelText, footerText: footerText, isError: isError)
+    }
+}
+
+@available(iOS 15.0, *)
+public struct ElementTextFieldStyle: TextFieldStyle {
+    @Environment(\.isEnabled) private var isEnabled
+    @Environment(\.colorScheme) private var colorScheme
+    
+    @FocusState private var isFocused: Bool
+    public let labelText: String?
+    public let footerText: String?
+    public let isError: Bool
+    
+    private var labelColor: Color {
+        guard colorScheme == .light else { return .element.tertiaryContent }
+        return isEnabled ? .element.primaryContent : .element.quaternaryContent
+    }
+    
+    private var footerColor: Color {
+        isError ? .element.alert : .element.tertiaryContent
+    }
+    
+    public init(labelText: String? = nil, footerText: String? = nil, isError: Bool = false) {
+        self.labelText = labelText
+        self.footerText = footerText
+        self.isError = isError
+    }
+    
+    public func _body(configuration: TextField<_Label>) -> some View {
+        VStack(alignment: .leading, spacing: 8) {
+            if let labelText = labelText {
+                Text(labelText)
+                    .font(.element.subheadline)
+                    .foregroundColor(labelColor)
+            }
+            
+            configuration
+                .textFieldStyle(BorderedInputFieldStyle(isEditing: isFocused, isError: isError, returnKey: nil))
+                .focused($isFocused)
+            
+            if let footerText = footerText {
+                Text(footerText)
+                    .font(.element.footnote)
+                    .foregroundColor(footerColor)
+            }
+        }
+    }
+}
+
+@available(iOS 15.0, *)
+struct ElementTextFieldStyle_Previews: PreviewProvider {
+    public static var states: some View {
+        VStack(spacing: 12) {
+            TextField("Placeholder", text: .constant(""))
+                .textFieldStyle(.elementInput(labelText: "Label", footerText: "Footer"))
+            TextField("Placeholder", text: .constant("Input text"))
+                .textFieldStyle(.elementInput(labelText: "Title", footerText: "Footer"))
+            TextField("Placeholder", text: .constant("Bad text"))
+                .textFieldStyle(.elementInput(labelText: "Title", footerText: "Footer", isError: true))
+            TextField("Placeholder", text: .constant(""))
+                .textFieldStyle(.elementInput(labelText: "Title", footerText: "Footer"))
+                .disabled(true)
+        }
+        .padding()
+    }
+    
+    public static var previews: some View {
+        Group {
+            states
+                .preferredColorScheme(.light)
+            states
+                .preferredColorScheme(.dark)
+        }
+    }
+}