qml: declare OnboardingWizard file, reintroduce as PageStack

This should be encapsulated so it can be reasoned about independently
and in a well defined location. Additionally, swap from SwipeView to
PageStack.

Author: jarolrod

src/Makefile.qt.include

@@ -421,6 +421,7 @@ QML_RES_QML = \
   qml/pages/onboarding/OnboardingStorageAmount.qml \
   qml/pages/onboarding/OnboardingStorageLocation.qml \
   qml/pages/onboarding/OnboardingStrengthen.qml \
+  qml/pages/onboarding/OnboardingWizard.qml \
   qml/pages/settings/SettingsAbout.qml \
   qml/pages/settings/SettingsBlockClockDisplayMode.qml \
   qml/pages/settings/SettingsConnection.qml \

src/qml/bitcoin_qml.qrc

@@ -61,6 +61,7 @@
         <file>pages/onboarding/OnboardingStorageAmount.qml</file>
         <file>pages/onboarding/OnboardingStorageLocation.qml</file>
         <file>pages/onboarding/OnboardingStrengthen.qml</file>
+        <file>pages/onboarding/OnboardingWizard.qml</file>
         <file>pages/settings/SettingsAbout.qml</file>
         <file>pages/settings/SettingsBlockClockDisplayMode.qml</file>
         <file>pages/settings/SettingsConnection.qml</file>

src/qml/pages/main.qml

@@ -65,36 +65,8 @@ ApplicationWindow {
 
     Component {
         id: onboardingWizard
-        SwipeView {
-            id: swipeView
-            property bool finished: false
-            interactive: false
-
-            OnboardingCover {
-                onNext: swipeView.incrementCurrentIndex()
-            }
-            OnboardingStrengthen {
-                onBack: swipeView.decrementCurrentIndex()
-                onNext: swipeView.incrementCurrentIndex()
-            }
-            OnboardingBlockclock {
-                onBack: swipeView.decrementCurrentIndex()
-                onNext: swipeView.incrementCurrentIndex()
-            }
-            OnboardingStorageLocation {
-                onBack: swipeView.decrementCurrentIndex()
-                onNext: swipeView.incrementCurrentIndex()
-            }
-            OnboardingStorageAmount {
-                onBack: swipeView.decrementCurrentIndex()
-                onNext: swipeView.incrementCurrentIndex()
-            }
-            OnboardingConnection {
-                onBack: swipeView.decrementCurrentIndex()
-                onNext: swipeView.finished = true
-            }
-
-            onFinishedChanged: {
+        OnboardingWizard {
+            onFinished: {
                 optionsModel.onboard()
                 if (AppMode.walletEnabled && AppMode.isDesktop) {
                     main.push(desktopWallets)

src/qml/pages/onboarding/OnboardingWizard.qml

@@ -0,0 +1,57 @@
+// Copyright (c) 2024 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+import QtQuick 2.15
+import QtQuick.Controls 2.15
+import QtQuick.Layouts 1.15
+import "../../controls"
+
+PageStack {
+    id: root
+
+    signal finished()
+    initialItem: cover
+
+    Component {
+        id: cover
+        OnboardingCover {
+            onNext: root.push(strengthen)
+        }
+    }
+    Component {
+        id: strengthen
+        OnboardingStrengthen {
+            onBack: root.pop()
+            onNext: root.push(blockclock)
+        }
+    }
+    Component {
+        id: blockclock
+        OnboardingBlockclock {
+            onBack: root.pop()
+            onNext: root.push(storageLocation)
+        }
+    }
+    Component {
+        id: storageLocation
+        OnboardingStorageLocation {
+            onBack: root.pop()
+            onNext: root.push(storageAmount)
+        }
+    }
+    Component {
+        id: storageAmount
+        OnboardingStorageAmount {
+            onBack: root.pop()
+            onNext: root.push(connection)
+        }
+    }
+    Component {
+        id: connection
+        OnboardingConnection {
+            onBack: root.pop()
+            onNext: root.finished()
+        }
+    }
+}