RoomScreenViewModel is now TimelineViewModel (#3157)

Co-authored-by: Stefan Ceriu <stefanc@matrix.org>

ElementX/Sources/Screens/Timeline/View/TimelineItemDebugView.swift

@@ -0,0 +1,115 @@
+//
+// Copyright 2022 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
+
+struct TimelineItemDebugView: View {
+    @Environment(\.dismiss) private var dismiss
+    
+    let info: TimelineItemDebugInfo
+    
+    var body: some View {
+        NavigationStack {
+            ScrollView {
+                VStack(spacing: 8) {
+                    TimelineItemInfoDisclosureGroup(title: "Model", text: info.model)
+                    
+                    if let originalJSONInfo = info.originalJSON {
+                        TimelineItemInfoDisclosureGroup(title: "Original JSON", text: originalJSONInfo)
+                    }
+                    
+                    if let latestEditJSONInfo = info.latestEditJSON {
+                        TimelineItemInfoDisclosureGroup(title: "Latest edit JSON", text: latestEditJSONInfo)
+                    }
+                }
+            }
+            .navigationBarTitleDisplayMode(.inline)
+            .navigationTitle("Timeline item")
+            .toolbarBackground(.visible, for: .navigationBar)
+            .toolbar {
+                ToolbarItem(placement: .cancellationAction) {
+                    Button(L10n.actionCancel) {
+                        dismiss()
+                    }
+                }
+                
+                ToolbarItem(placement: .primaryAction) {
+                    Button(L10n.actionCopy) {
+                        UIPasteboard.general.string = info.description
+                    }
+                }
+            }
+        }
+    }
+    
+    // MARK: - Private
+    
+    private struct TimelineItemInfoDisclosureGroup: View {
+        @State private var isExpanded = true
+        
+        let title: String
+        let text: String
+        
+        var body: some View {
+            VStack(spacing: 0.0) {
+                DisclosureGroup(title, isExpanded: $isExpanded) {
+                    disclosureGroupContent
+                }
+                .font(.compound.bodyMD)
+                .padding()
+                
+                Divider()
+            }
+        }
+        
+        @ViewBuilder
+        var disclosureGroupContent: some View {
+            VStack(alignment: .leading, spacing: 0) {
+                Divider()
+                    .padding(.vertical, 8)
+                
+                TextField("", text: .constant(text), axis: .vertical)
+                    .font(.compound.bodyXS.monospaced())
+                    .foregroundColor(.compound.textPrimary)
+                    .fixedSize(horizontal: false, vertical: true)
+            }
+            .frame(maxWidth: .infinity)
+        }
+    }
+}
+
+struct TimelineItemDebugView_Previews: PreviewProvider, TestablePreview {
+    static let smallContent = """
+    {
+        SomeItem(
+            event_id: "$1234546634535",
+            sender: "@user:server.com",
+            timestamp: 42354534534
+            content: Message(
+                Message {
+                    …
+                }
+            )
+        )
+    }
+    """
+    
+    static var previews: some View {
+        TimelineItemDebugView(info: .init(model: smallContent,
+                                          originalJSON: "{\"Hi\": \"Alice\"}",
+                                          latestEditJSON: "{\"Hi\": \"Bob\"}"))
+    }
+}