Integrate files selection into real Seedvault app

app/src/main/java/com/stevesoltys/seedvault/restore/FilesSelectionFragment.kt

@@ -0,0 +1,45 @@
+/*
+ * SPDX-FileCopyrightText: 2024 The Calyx Institute
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package com.stevesoltys.seedvault.restore
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.view.ViewStub
+import android.widget.Button
+import com.stevesoltys.seedvault.R
+import org.calyxos.backup.storage.ui.restore.FileSelectionFragment
+import org.calyxos.backup.storage.ui.restore.FilesItem
+import org.koin.androidx.viewmodel.ext.android.sharedViewModel
+
+internal class FilesSelectionFragment : FileSelectionFragment() {
+
+    override val viewModel: RestoreViewModel by sharedViewModel()
+    private lateinit var button: Button
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?,
+    ): View {
+        val v = super.onCreateView(inflater, container, savedInstanceState)
+        val topStub: ViewStub = v.requireViewById(R.id.topStub)
+        topStub.layoutResource = R.layout.header_files_selection
+        topStub.inflate()
+        val bottomStub: ViewStub = v.requireViewById(R.id.bottomStub)
+        bottomStub.layoutResource = R.layout.footer_files_selection
+        button = bottomStub.inflate() as Button
+        button.setOnClickListener {
+            viewModel.startFilesRestore()
+        }
+        return v
+    }
+
+    override fun onFileItemsChanged(filesItems: List<FilesItem>) {
+        slideUpInRootView(button)
+    }
+}

app/src/main/java/com/stevesoltys/seedvault/restore/RestoreActivity.kt

@@ -12,6 +12,7 @@ import com.stevesoltys.seedvault.restore.DisplayFragment.RESTORE_APPS
 import com.stevesoltys.seedvault.restore.DisplayFragment.RESTORE_BACKUP
 import com.stevesoltys.seedvault.restore.DisplayFragment.RESTORE_FILES
 import com.stevesoltys.seedvault.restore.DisplayFragment.RESTORE_FILES_STARTED
+import com.stevesoltys.seedvault.restore.DisplayFragment.RESTORE_SELECT_FILES
 import com.stevesoltys.seedvault.restore.DisplayFragment.SELECT_APPS
 import com.stevesoltys.seedvault.restore.install.InstallProgressFragment
 import com.stevesoltys.seedvault.ui.RequireProvisioningActivity
@@ -35,7 +36,12 @@ class RestoreActivity : RequireProvisioningActivity() {
                 RESTORE_APPS -> showFragment(InstallProgressFragment())
                 RESTORE_BACKUP -> showFragment(RestoreProgressFragment())
                 RESTORE_FILES -> showFragment(RestoreFilesFragment())
-                RESTORE_FILES_STARTED -> showFragment(RestoreFilesStartedFragment())
+                RESTORE_SELECT_FILES -> showFragment(FilesSelectionFragment(), true)
+                RESTORE_FILES_STARTED -> {
+                    // pop back stack, so back navigation doesn't bring us to RESTORE_SELECT_FILES
+                    supportFragmentManager.popBackStackImmediate()
+                    showFragment(RestoreFilesStartedFragment())
+                }
                 else -> throw AssertionError()
             }
         }

app/src/main/java/com/stevesoltys/seedvault/restore/RestoreFilesFragment.kt

@@ -47,7 +47,7 @@ internal class RestoreFilesFragment : SnapshotFragment() {
     }
 
     override fun onSnapshotClicked(item: SnapshotItem) {
-        viewModel.startFilesRestore(item)
+        viewModel.selectFilesForRestore(item)
     }
 }
 

app/src/main/java/com/stevesoltys/seedvault/restore/RestoreViewModel.kt

@@ -23,6 +23,7 @@ import com.stevesoltys.seedvault.restore.DisplayFragment.RESTORE_APPS
 import com.stevesoltys.seedvault.restore.DisplayFragment.RESTORE_BACKUP
 import com.stevesoltys.seedvault.restore.DisplayFragment.RESTORE_FILES
 import com.stevesoltys.seedvault.restore.DisplayFragment.RESTORE_FILES_STARTED
+import com.stevesoltys.seedvault.restore.DisplayFragment.RESTORE_SELECT_FILES
 import com.stevesoltys.seedvault.restore.DisplayFragment.SELECT_APPS
 import com.stevesoltys.seedvault.restore.install.ApkRestore
 import com.stevesoltys.seedvault.restore.install.InstallIntentCreator
@@ -44,6 +45,7 @@ import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.launch
 import org.calyxos.backup.storage.api.SnapshotItem
 import org.calyxos.backup.storage.api.StorageBackup
+import org.calyxos.backup.storage.api.StoredSnapshot
 import org.calyxos.backup.storage.restore.RestoreService.Companion.EXTRA_TIMESTAMP_START
 import org.calyxos.backup.storage.restore.RestoreService.Companion.EXTRA_USER_ID
 import org.calyxos.backup.storage.ui.restore.FileSelectionManager
@@ -100,6 +102,7 @@ internal class RestoreViewModel(
         get() = appDataRestoreManager.restoreBackupResult
 
     override val snapshots = storageBackup.getBackupSnapshots().asLiveData(ioDispatcher)
+    private var storedSnapshot: StoredSnapshot? = null
 
     internal fun loadRestoreSets() = viewModelScope.launch(ioDispatcher) {
         val backups = restoreCoordinator.getAvailableMetadata()?.mapNotNull { (token, metadata) ->
@@ -181,12 +184,22 @@ internal class RestoreViewModel(
     }
 
     @UiThread
-    internal fun startFilesRestore(item: SnapshotItem) {
+    internal fun selectFilesForRestore(item: SnapshotItem) {
+        val snapshot = item.snapshot ?: error("${item.storedSnapshot} had null snapshot")
+        fileSelectionManager.onSnapshotChosen(snapshot)
+        storedSnapshot = item.storedSnapshot
+        mDisplayFragment.setEvent(RESTORE_SELECT_FILES)
+    }
+
+    @UiThread
+    internal fun startFilesRestore() {
+        val storedSnapshot = this.storedSnapshot ?: error("No snapshot stored")
         val i = Intent(app, StorageRestoreService::class.java)
-        i.putExtra(EXTRA_USER_ID, item.storedSnapshot.userId)
-        i.putExtra(EXTRA_TIMESTAMP_START, item.time)
+        i.putExtra(EXTRA_USER_ID, storedSnapshot.userId)
+        i.putExtra(EXTRA_TIMESTAMP_START, storedSnapshot.timestamp)
         app.startForegroundService(i)
         mDisplayFragment.setEvent(RESTORE_FILES_STARTED)
+        this.storedSnapshot = null
     }
 
 }
@@ -208,5 +221,10 @@ internal class RestoreBackupResult(val errorMsg: String? = null) {
 }
 
 internal enum class DisplayFragment {
-    SELECT_APPS, RESTORE_APPS, RESTORE_BACKUP, RESTORE_FILES, RESTORE_FILES_STARTED
+    SELECT_APPS,
+    RESTORE_APPS,
+    RESTORE_BACKUP,
+    RESTORE_FILES,
+    RESTORE_SELECT_FILES,
+    RESTORE_FILES_STARTED,
 }

app/src/main/java/com/stevesoltys/seedvault/ui/BackupActivity.kt

@@ -24,8 +24,7 @@ abstract class BackupActivity : AppCompatActivity() {
 
     protected fun showFragment(f: Fragment, addToBackStack: Boolean = false, tag: String? = null) {
         supportFragmentManager.beginTransaction().apply {
-            if (tag == null) replace(R.id.fragment, f)
-            else replace(R.id.fragment, f, tag)
+            replace(R.id.fragment, f, tag)
             if (addToBackStack) addToBackStack(null)
             commit()
         }

app/src/main/res/layout/footer_files_selection.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+  SPDX-FileCopyrightText: 2024 The Calyx Institute
+  SPDX-License-Identifier: Apache-2.0
+  -->
+<androidx.appcompat.widget.AppCompatButton xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/button"
+    style="@style/SudPrimaryButton"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:layout_gravity="bottom|end"
+    android:layout_marginEnd="16dp"
+    android:drawableStart="@drawable/ic_cloud_restore"
+    android:drawablePadding="8dp"
+    android:drawableTint="?android:textColorPrimaryInverse"
+    android:text="@string/select_files_button_restore"
+    app:layout_behavior="com.google.android.material.behavior.HideBottomViewOnScrollBehavior" />

app/src/main/res/layout/header_files_selection.xml

@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+  SPDX-FileCopyrightText: 2020 The Calyx Institute
+  SPDX-License-Identifier: Apache-2.0
+  -->
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:paddingBottom="16dp">
+
+    <ImageView
+        android:id="@+id/imageView"
+        style="@style/SudHeaderIcon"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:srcCompat="@drawable/ic_cloud_download"
+        app:tint="?android:colorAccent"
+        tools:ignore="ContentDescription" />
+
+    <TextView
+        android:id="@+id/titleView"
+        style="@style/SudHeaderTitle"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:text="@string/select_files_title"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/imageView" />
+
+    <TextView
+        android:id="@+id/backupNameView"
+        style="@style/SudDescription"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:text="@string/restore_storage_selection_description"
+        android:textColor="?android:textColorSecondary"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.0"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/titleView" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/values/strings.xml

@@ -234,6 +234,7 @@
 
     <string name="restore_storage_skip">Skip restoring files</string>
     <string name="restore_storage_choose_snapshot">Choose a storage backup to restore (beta)</string>
+    <string name="restore_storage_selection_description">Selected files will be restored. Tap folders to see files in them.</string>
     <string name="restore_storage_in_progress_title">Files are being restored…</string>
     <string name="restore_storage_in_progress_info">Your files are being restored in the background. You can start using your phone while this is running.\n\nSome apps (e.g. Signal or WhatsApp) might require files to be fully restored to import a backup. Try to avoid starting those apps before file restore is complete.</string>
     <string name="restore_storage_got_it">Got it</string>

storage/demo/src/main/java/de/grobox/storagebackuptester/restore/DemoFileSelectionFragment.kt

@@ -11,13 +11,16 @@ import android.view.View
 import android.view.ViewGroup
 import android.view.ViewStub
 import androidx.fragment.app.activityViewModels
+import com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton
 import de.grobox.storagebackuptester.MainViewModel
 import de.grobox.storagebackuptester.R
 import org.calyxos.backup.storage.ui.restore.FileSelectionFragment
+import org.calyxos.backup.storage.ui.restore.FilesItem
 
 class DemoFileSelectionFragment : FileSelectionFragment() {
 
     override val viewModel: MainViewModel by activityViewModels()
+    private var fab: ExtendedFloatingActionButton? = null
 
     override fun onCreateView(
         inflater: LayoutInflater,
@@ -28,14 +31,22 @@ class DemoFileSelectionFragment : FileSelectionFragment() {
         val topStub: ViewStub = v.findViewById(R.id.topStub)
         topStub.layoutResource = R.layout.header_file_select
         topStub.inflate()
+
+        val bottomStub: ViewStub = v.findViewById(R.id.bottomStub)
+        bottomStub.layoutResource = R.layout.footer_files
+        val footer = bottomStub.inflate() as ExtendedFloatingActionButton
+        fab = footer
+        footer.setOnClickListener {
+            viewModel.onFilesSelected()
+            parentFragmentManager.beginTransaction()
+                .replace(R.id.container, RestoreFragment.newInstance())
+                .commit()
+        }
         return v
     }
 
-    override fun onRestoreButtonClicked() {
-        viewModel.onFilesSelected()
-        parentFragmentManager.beginTransaction()
-            .replace(R.id.container, RestoreFragment.newInstance())
-            .commit()
+    override fun onFileItemsChanged(filesItems: List<FilesItem>) {
+        super.onFileItemsChanged(filesItems)
+        slideUpInRootView(fab!!)
     }
-
 }

storage/demo/src/main/res/layout/footer_files.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+  SPDX-FileCopyrightText: 2024 The Calyx Institute
+  SPDX-License-Identifier: Apache-2.0
+  -->
+<com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/fab"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:layout_gravity="bottom|end"
+    android:layout_margin="16dp"
+    android:text="@string/select_files_button_restore"
+    android:textColor="#ffffff"
+    app:backgroundTint="?colorAccent"
+    app:icon="@drawable/ic_cloud_restore"
+    app:iconTint="#ffffff"
+    app:layout_behavior="com.google.android.material.behavior.HideBottomViewOnScrollBehavior" />

storage/lib/src/main/java/org/calyxos/backup/storage/ui/restore/FileSelectionFragment.kt

@@ -10,18 +10,20 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.annotation.CallSuper
+import androidx.coordinatorlayout.widget.CoordinatorLayout
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.Lifecycle.State.STARTED
 import androidx.lifecycle.flowWithLifecycle
 import androidx.lifecycle.lifecycleScope
 import androidx.recyclerview.widget.RecyclerView
+import com.google.android.material.behavior.HideBottomViewOnScrollBehavior
 import kotlinx.coroutines.launch
 import org.calyxos.backup.storage.R
 
 public abstract class FileSelectionFragment : Fragment() {
 
     protected abstract val viewModel: SnapshotViewModel
-    private lateinit var list: RecyclerView
+    protected lateinit var list: RecyclerView
     private lateinit var adapter: FilesAdapter
 
     override fun onCreateView(
@@ -33,9 +35,6 @@ public abstract class FileSelectionFragment : Fragment() {
 
         val v = inflater.inflate(R.layout.fragment_select_files, container, false)
         list = v.findViewById(R.id.list)
-        v.findViewById<View>(R.id.fab).setOnClickListener {
-            onRestoreButtonClicked()
-        }
 
         return v
     }
@@ -49,15 +48,19 @@ public abstract class FileSelectionFragment : Fragment() {
         list.adapter = adapter
         lifecycleScope.launch {
             viewModel.fileSelectionManager.files.flowWithLifecycle(lifecycle, STARTED).collect {
-                onFileItemsChanged(it)
+                adapter.submitList(it) {
+                    onFileItemsChanged(it)
+                }
             }
         }
     }
 
-    protected abstract fun onRestoreButtonClicked()
-
-    @CallSuper
     protected open fun onFileItemsChanged(filesItems: List<FilesItem>) {
-        adapter.submitList(filesItems)
+    }
+
+    protected fun slideUpInRootView(view: View) {
+        val layoutParams = view.layoutParams as CoordinatorLayout.LayoutParams
+        val behavior = layoutParams.behavior as HideBottomViewOnScrollBehavior
+        behavior.slideUp(view)
     }
 }

storage/lib/src/main/res/layout/fragment_select_files.xml

@@ -37,17 +37,15 @@
         app:layout_behavior="@string/appbar_scrolling_view_behavior"
         tools:listitem="@layout/item_file" />
 
-    <com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton
-        android:id="@+id/fab"
+    <ViewStub
+        android:id="@+id/bottomStub"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_gravity="bottom|end"
         android:layout_margin="16dp"
-        android:text="@string/select_files_button_restore"
-        android:textColor="#ffffff"
-        app:backgroundTint="?colorAccent"
-        app:icon="@drawable/ic_cloud_restore"
-        app:iconTint="#ffffff"
-        app:layout_behavior="com.google.android.material.behavior.HideBottomViewOnScrollBehavior" />
+        android:inflatedId="@+id/bottomStub"
+        app:layout_behavior="com.google.android.material.behavior.HideBottomViewOnScrollBehavior"
+        tools:layout="@layout/item_custom"
+        tools:visibility="visible" />
 
 </androidx.coordinatorlayout.widget.CoordinatorLayout>

storage/lib/src/main/res/values/strings.xml

@@ -23,7 +23,7 @@
     <string name="snapshots_empty">No storage backups found\n\nSorry, but there is nothing that can be restored.</string>
     <string name="snapshots_error">Error loading snapshots</string>
 
-    <string name="select_files_title">Files to be restored</string>
+    <string name="select_files_title">Review files for restore</string>
     <string name="select_files_number_of_files">%1$d file(s)</string>
-    <string name="select_files_button_restore">Restore checked files</string>
+    <string name="select_files_button_restore">Restore selected files</string>
 </resources>