Simplify environment pass in, highlight selected items on other tabs as well

App/App_macOS.swift

@@ -236,23 +236,11 @@ struct RootView: View {
             case .opened:
                 MultiZimFilesOpened()
             case .categories:
-<<<<<<< HEAD
-                ZimFilesCategories(dismiss: nil)
-                    .modifier(LibraryZimFileDetailSidePanel())
-                    .modifier(SearchFocused(isSearchFocused: isSearchFocused))
-=======
-                DetailSidePanel(content: { selection in ZimFilesCategories(dismiss: nil).environmentObject(selection) })
->>>>>>> 1f496b8e (Make selection tab scoped)
+                DetailSidePanel(content: { ZimFilesCategories(dismiss: nil) })
             case .downloads:
-                DetailSidePanel(content: { selection in ZimFilesDownloads(dismiss: nil).environmentObject(selection) })
+                DetailSidePanel(content: { ZimFilesDownloads(dismiss: nil) })
             case .new:
-<<<<<<< HEAD
-                ZimFilesNew(dismiss: nil)
-                    .modifier(LibraryZimFileDetailSidePanel())
-                    .modifier(SearchFocused(isSearchFocused: isSearchFocused))
-=======
-                DetailSidePanel(content: { selection in ZimFilesNew(dismiss: nil).environmentObject(selection) })
->>>>>>> 1f496b8e (Make selection tab scoped)
+                DetailSidePanel(content: { ZimFilesNew(dismiss: nil) })
             default:
                 EmptyView()
             }

Views/BuildingBlocks/DownloadTaskCell.swift

@@ -1,5 +1,5 @@
 /*
-65;6800;1c * This file is part of Kiwix for iOS & macOS.
+ * This file is part of Kiwix for iOS & macOS.
  *
  * Kiwix is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by
@@ -20,6 +20,7 @@ import SwiftUI
 import Combine
 
 struct DownloadTaskCell: View {
+    @EnvironmentObject var selection: SelectedZimFileViewModel
     @State private var isHovering: Bool = false
     @State private var downloadState = DownloadState(downloaded: 0, total: 1, resumeData: nil)
 
@@ -63,7 +64,12 @@ struct DownloadTaskCell: View {
             }.font(.caption).foregroundColor(.secondary)
         }
         .padding()
-        .background(CellBackground.colorFor(isHovering: isHovering))
+        .background(
+            CellBackground.colorFor(
+                isHovering: isHovering,
+                isSelected: selection.isSelected(downloadZimFile)
+            )
+        )
         .clipShape(CellBackground.clipShapeRectangle)
         .onHover { self.isHovering = $0 }
         .onReceive(DownloadService.shared.progress.publisher) { states in

Views/Library/Library.swift

@@ -131,16 +131,16 @@ struct MultiZimFilesDetail: View {
 
 struct DetailSidePanel<Content: View>: View {
     @StateObject private var selection = SelectedZimFileViewModel()
-    private let contentView: (SelectedZimFileViewModel) -> Content
+    private let contentView: () -> Content
     
-    init(@ViewBuilder content: @escaping (SelectedZimFileViewModel) -> Content) {
+    init(@ViewBuilder content: @escaping () -> Content) {
         contentView = content
     }
     
     var body: some View {
         VStack(spacing: 0) {
             Divider()
-            contentView(selection).safeAreaInset(edge: .trailing, spacing: 0) {
+            contentView().safeAreaInset(edge: .trailing, spacing: 0) {
                 HStack(spacing: 0) {
                     Divider()
                     if let zimFile = selection.selectedZimFile {
@@ -151,7 +151,7 @@ struct DetailSidePanel<Content: View>: View {
                     }
                 }.frame(width: 275).background(.ultraThinMaterial)
             }
-        }
+        }.environmentObject(selection)
     }
 }
 

Views/Library/ZimFilesCategories.swift

@@ -141,7 +141,13 @@ private struct CategoryGrid: View {
                         if sections.count <= 1 {
                             ForEach(section) { zimFile in
                                 LibraryZimFileContext(
-                                    content: { ZimFileCell(zimFile, prominent: .size) },
+                                    content: {
+                                        ZimFileCell(
+                                            zimFile,
+                                            prominent: .size,
+                                            isSelected: selection.isSelected(zimFile)
+                                        )
+                                    },
                                     zimFile: zimFile,
                                     selection: selection,
                                     dismiss: dismiss)
@@ -150,7 +156,12 @@ private struct CategoryGrid: View {
                             Section {
                                 ForEach(section) { zimFile in
                                     LibraryZimFileContext(
-                                        content: { ZimFileCell(zimFile, prominent: .size) },
+                                        content: { ZimFileCell(
+                                            zimFile,
+                                            prominent: .size,
+                                            isSelected: selection.isSelected(zimFile)
+                                        )
+                                        },
                                         zimFile: zimFile,
                                         selection: selection,
                                         dismiss: dismiss)

Views/Library/ZimFilesNew.swift

@@ -113,7 +113,11 @@ struct ZimFilesNew: View {
             ForEach(viewModel.zimFiles, id: \.fileID) { zimFile in
                 LibraryZimFileContext(
                     content: {
-                        ZimFileCell(zimFile, prominent: .name)
+                        ZimFileCell(
+                            zimFile,
+                            prominent: .name,
+                            isSelected: selection.isSelected(zimFile)
+                        )
                     },
                     zimFile: zimFile,
                     selection: selection,