[WIP] Switch to tab implementation

DuckDuckGo/Assets.xcassets/Images/OpenTabSuggestion.imageset/Contents.json

@@ -0,0 +1,15 @@
+{
+  "images" : [
+    {
+      "filename" : "History-16.pdf",
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  },
+  "properties" : {
+    "template-rendering-intent" : "template"
+  }
+}

DuckDuckGo/NavigationBar/View/AddressBarTextField.swift

@@ -370,7 +370,9 @@ final class AddressBarTextField: NSTextField {
             PixelKit.fire(autocompletePixel)
         }
 
-        if NSApp.isCommandPressed {
+        if case .openTab(let title, url: let url) = suggestion {
+            switchTo(OpenTab(title: title, url: url))
+        } else if NSApp.isCommandPressed {
             openNew(NSApp.isOptionPressed ? .window : .tab, selected: NSApp.isShiftPressed, suggestion: suggestion)
         } else {
             hideSuggestionWindow()
@@ -486,6 +488,21 @@ final class AddressBarTextField: NSTextField {
         }
     }
 
+    private func switchTo(_ tab: OpenTab) {
+        if let selectedTabViewModel = tabCollectionViewModel.selectedTabViewModel,
+           let selectionIndex = tabCollectionViewModel.selectionIndex,
+           case .newtab = selectedTabViewModel.tab.content {
+            // close tab with "new tab" page open
+            tabCollectionViewModel.remove(at: selectionIndex)
+
+            // close the window if no more non-pinned tabs are open
+            if tabCollectionViewModel.tabs.isEmpty, let window, window.isVisible {
+                window.performClose(self)
+            }
+        }
+        WindowControllersManager.shared.show(url: tab.url, source: .switchToOpenTab, newTab: false)
+    }
+
     private func makeUrl(suggestion: Suggestion?, stringValueWithoutSuffix: String, completion: @escaping (URL?, String, Bool) -> Void) {
         let finalUrl: URL?
         let userEnteredValue: String
@@ -1037,14 +1054,14 @@ extension AddressBarTextField: NSTextFieldDelegate {
                 return true
 
             case #selector(NSResponder.deleteBackward(_:)),
-                #selector(NSResponder.deleteForward(_:)),
-                #selector(NSResponder.deleteToMark(_:)),
-                #selector(NSResponder.deleteWordForward(_:)),
-                #selector(NSResponder.deleteWordBackward(_:)),
-                #selector(NSResponder.deleteToEndOfLine(_:)),
-                #selector(NSResponder.deleteToEndOfParagraph(_:)),
-                #selector(NSResponder.deleteToBeginningOfLine(_:)),
-                #selector(NSResponder.deleteBackwardByDecomposingPreviousCharacter(_:)):
+                 #selector(NSResponder.deleteForward(_:)),
+                 #selector(NSResponder.deleteToMark(_:)),
+                 #selector(NSResponder.deleteWordForward(_:)),
+                 #selector(NSResponder.deleteWordBackward(_:)),
+                 #selector(NSResponder.deleteToEndOfLine(_:)),
+                 #selector(NSResponder.deleteToEndOfParagraph(_:)),
+                 #selector(NSResponder.deleteToBeginningOfLine(_:)),
+                 #selector(NSResponder.deleteBackwardByDecomposingPreviousCharacter(_:)):
 
                 suggestionContainerViewModel?.clearSelection()
                 return false

DuckDuckGo/Suggestions/Model/SuggestionContainer.swift

@@ -16,19 +16,22 @@
 //  limitations under the License.
 //
 
-import Foundation
-import Suggestions
+import Combine
 import Common
+import Foundation
 import History
-import PixelKit
 import os.log
+import PixelKit
+import Suggestions
 
 final class SuggestionContainer {
 
     static let maximumNumberOfSuggestions = 9
 
     @PublishedAfter var result: SuggestionResult?
 
+    typealias OpenTabsProvider = @MainActor () -> [any Suggestions.BrowserTab]
+    private let openTabsProvider: OpenTabsProvider
     private let historyCoordinating: HistoryCoordinating
     private let bookmarkManager: BookmarkManager
     private let startupPreferences: StartupPreferences
@@ -41,7 +44,8 @@ final class SuggestionContainer {
 
     fileprivate let suggestionsURLSession = URLSession(configuration: .ephemeral)
 
-    init(suggestionLoading: SuggestionLoading, historyCoordinating: HistoryCoordinating, bookmarkManager: BookmarkManager, startupPreferences: StartupPreferences = .shared) {
+    init(openTabsProvider: @escaping OpenTabsProvider, suggestionLoading: SuggestionLoading, historyCoordinating: HistoryCoordinating, bookmarkManager: BookmarkManager, startupPreferences: StartupPreferences = .shared) {
+        self.openTabsProvider = openTabsProvider
         self.bookmarkManager = bookmarkManager
         self.historyCoordinating = historyCoordinating
         self.startupPreferences = startupPreferences
@@ -52,8 +56,16 @@ final class SuggestionContainer {
         let urlFactory = { urlString in
             return URL.makeURL(fromSuggestionPhrase: urlString)
         }
-
-        self.init(suggestionLoading: SuggestionLoader(urlFactory: urlFactory),
+        let openTabsProvider: OpenTabsProvider = { @MainActor in
+            let selectedTab = WindowControllersManager.shared.selectedTab
+            return WindowControllersManager.shared.allTabViewModels.compactMap { model in
+                guard model.tab !== selectedTab, model.tab.content.isUrl else { return nil }
+                return model.tab.content.userEditableUrl.map { url in
+                    OpenTab(title: model.title, url: url)
+                }
+            }
+        }
+        self.init(openTabsProvider: openTabsProvider, suggestionLoading: SuggestionLoader(urlFactory: urlFactory),
                   historyCoordinating: HistoryCoordinator.shared,
                   bookmarkManager: LocalBookmarkManager.shared)
     }
@@ -92,6 +104,13 @@ final class SuggestionContainer {
 
 }
 
+struct OpenTab: BrowserTab {
+
+    let title: String
+    let url: URL
+
+}
+
 extension SuggestionContainer: SuggestionLoadingDataSource {
 
     var platform: Platform {
@@ -123,8 +142,7 @@ extension SuggestionContainer: SuggestionLoadingDataSource {
     }
 
     @MainActor func openTabs(for suggestionLoading: any Suggestions.SuggestionLoading) -> [any Suggestions.BrowserTab] {
-        // Support for this on macOS will come later.
-        []
+        openTabsProvider()
     }
 
     func suggestionLoading(_ suggestionLoading: SuggestionLoading,

DuckDuckGo/Suggestions/ViewModel/SuggestionViewModel.swift

@@ -95,7 +95,8 @@ struct SuggestionViewModel: Equatable {
                 return title ?? url.toString(forUserInput: userStringValue)
             }
         case .bookmark(title: let title, url: _, isFavorite: _, allowedInTopHits: _),
-                .internalPage(title: let title, url: _), .openTab(title: let title, url: _):
+             .internalPage(title: let title, url: _),
+             .openTab(title: let title, url: _):
             return title
         case .unknown(value: let value):
             return value
@@ -115,7 +116,8 @@ struct SuggestionViewModel: Equatable {
                 return title
             }
         case .bookmark(title: let title, url: _, isFavorite: _, allowedInTopHits: _),
-                .internalPage(title: let title, url: _), .openTab(title: let title, url: _):
+             .internalPage(title: let title, url: _),
+             .openTab(title: let title, url: _):
             return title
         }
     }
@@ -187,8 +189,7 @@ struct SuggestionViewModel: Equatable {
             guard url == URL(string: StartupPreferences.shared.formattedCustomHomePageURL) else { return nil }
             return .home16
         case .openTab:
-            assertionFailure("specify an icon")
-            return nil
+            return .openTabSuggestion
         }
     }
 

DuckDuckGo/Tab/Model/TabContent.swift

@@ -52,6 +52,7 @@ extension TabContent {
         case link
         case appOpenUrl
         case reload
+        case switchToOpenTab
 
         case webViewUpdated
 
@@ -71,7 +72,7 @@ extension TabContent {
             switch self {
             case .userEntered(_, downloadRequested: true):
                 .custom(.userRequestedPageDownload)
-            case .userEntered:
+            case .userEntered, .switchToOpenTab /* fallback */:
                 .custom(.userEnteredUrl)
             case .pendingStateRestoration:
                 .sessionRestoration
@@ -100,7 +101,7 @@ extension TabContent {
                 .returnCacheDataElseLoad
             case .reload, .loadedByStateRestoration:
                 .reloadIgnoringCacheData
-            case .userEntered, .bookmark, .ui, .link, .appOpenUrl, .webViewUpdated:
+            case .userEntered, .bookmark, .ui, .link, .appOpenUrl, .webViewUpdated, .switchToOpenTab:
                 .useProtocolCachePolicy
             }
         }
@@ -262,7 +263,7 @@ extension TabContent {
         case .url(_, _, source: let source):
             return source
         case .newtab, .settings, .bookmarks, .onboardingDeprecated, .onboarding, .releaseNotes, .dataBrokerProtection,
-                .subscription, .identityTheftRestoration, .none:
+             .subscription, .identityTheftRestoration, .none:
             return .ui
         }
     }

DuckDuckGo/Tab/View/BrowserTabViewController.swift

@@ -667,6 +667,7 @@ final class BrowserTabViewController: NSViewController {
              .url(_, _, source: .ui),
              .url(_, _, source: .link),
              .url(_, _, source: .appOpenUrl),
+             .url(_, _, source: .switchToOpenTab),
              .url(_, _, source: .reload):
             return true
 

DuckDuckGo/Tab/ViewModel/TabViewModel.swift

@@ -171,6 +171,7 @@ final class TabViewModel {
                      .url(_, _, source: .bookmark),
                      .url(_, _, source: .ui),
                      .url(_, _, source: .appOpenUrl),
+                     .url(_, _, source: .switchToOpenTab),
                      .url(_, _, source: .reload),
                      .newtab,
                      .settings,

DuckDuckGo/TabBar/ViewModel/TabCollectionViewModel.swift

@@ -787,6 +787,16 @@ extension TabCollectionViewModel {
         return nil
     }
 
+    func indexInAllTabs(where condition: (Tab) -> Bool) -> TabIndex? {
+        if let index = pinnedTabsCollection?.tabs.firstIndex(where: condition) {
+            return .pinned(index)
+        }
+        if let index = tabCollection.tabs.firstIndex(where: condition) {
+            return .unpinned(index)
+        }
+        return nil
+    }
+
     private func tab(at tabIndex: TabIndex) -> Tab? {
         switch tabIndex {
         case .pinned(let index):

DuckDuckGo/Windows/View/WindowControllersManager.swift

@@ -192,6 +192,12 @@ extension WindowControllersManager {
             // If there is any non-popup window available, open the URL in it
             ?? nonPopupMainWindowControllers.first {
 
+            // Switch to already open tab if present
+            if [.appOpenUrl, .switchToOpenTab].contains(source),
+               let url, switchToOpenTab(with: url, preferring: windowController) == true {
+                return
+            }
+
             show(url: url, in: windowController, source: source, newTab: newTab)
             return
         }
@@ -204,6 +210,21 @@ extension WindowControllersManager {
         }
     }
 
+    private func switchToOpenTab(with url: URL, preferring mainWindowController: MainWindowController) -> Bool {
+        for (windowIdx, windowController) in ([mainWindowController] + mainWindowControllers).enumerated() {
+            // prefer current main window
+            guard windowIdx == 0 || windowController !== mainWindowController else { continue }
+            let tabCollectionViewModel = windowController.mainViewController.tabCollectionViewModel
+            guard let index = tabCollectionViewModel.indexInAllTabs(where: { $0.content.urlForWebView == url }) else { continue }
+
+            windowController.window?.makeKeyAndOrderFront(self)
+            tabCollectionViewModel.select(at: index)
+
+            return true
+        }
+        return false
+    }
+
     private func show(url: URL?, in windowController: MainWindowController, source: Tab.TabContent.URLSource, newTab: Bool) {
         let viewController = windowController.mainViewController
         windowController.window?.makeKeyAndOrderFront(self)