feat(study-screen): Reset progress

AnkiDroid/src/main/java/com/ichi2/anki/preferences/reviewer/ViewerAction.kt

@@ -74,6 +74,12 @@ enum class ViewerAction(
     ADD_NOTE(R.id.action_add_note, R.drawable.ic_add, R.string.menu_add_note, DISABLED),
     TAG(R.id.action_edit_tags, R.drawable.ic_tag, R.string.menu_edit_tags, DISABLED),
     RESCHEDULE_NOTE(R.id.action_set_due_date, R.drawable.ic_reschedule, titleRes = R.string.empty_string, DISABLED),
+    RESET_PROGRESS(
+        R.id.action_reset_progress,
+        drawableRes = R.drawable.ic_backup_restore,
+        titleRes = R.string.card_editor_reset_card,
+        DISABLED,
+    ),
     TOGGLE_AUTO_ADVANCE(R.id.action_toggle_auto_advance, R.drawable.ic_fast_forward, R.string.toggle_auto_advance, DISABLED),
     RECORD_VOICE(R.id.action_record_voice, R.drawable.ic_action_mic, R.string.record_voice, DISABLED),
     PLAY_MEDIA(R.id.action_replay_media, R.drawable.ic_play_circle_white, R.string.replay_media, DISABLED),
@@ -149,6 +155,7 @@ enum class ViewerAction(
             STATISTICS -> listOf(keycode(KeyEvent.KEYCODE_T))
             PLAY_MEDIA -> listOf(keycode(KeyEvent.KEYCODE_R))
             PREVIOUS_CARD_INFO -> listOf(keycode(KeyEvent.KEYCODE_I, ModifierKeys(shift = false, ctrl = true, alt = true)))
+            RESET_PROGRESS -> listOf(keycode(KeyEvent.KEYCODE_N, ModifierKeys(ctrl = true, alt = true, shift = false)))
             TOGGLE_FLAG_RED ->
                 listOf(
                     keycode(KeyEvent.KEYCODE_1, ctrl()),

AnkiDroid/src/main/java/com/ichi2/anki/scheduling/ForgetCardsDialog.kt

@@ -21,9 +21,11 @@ import android.os.Bundle
 import androidx.core.content.edit
 import androidx.core.os.bundleOf
 import androidx.fragment.app.DialogFragment
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.FragmentActivity
+import androidx.fragment.app.setFragmentResultListener
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.google.android.material.snackbar.Snackbar
-import com.ichi2.anki.AnkiActivity
 import com.ichi2.anki.CollectionManager.TR
 import com.ichi2.anki.R
 import com.ichi2.anki.common.annotations.NeedsTest
@@ -155,7 +157,7 @@ class ForgetCardsDialog : DialogFragment() {
  *
  * @param cardsIdsProducer lambda which returns the list of cards for which to reset the progress
  */
-internal fun AnkiActivity.registerOnForgetHandler(cardsIdsProducer: suspend () -> List<CardId>) {
+internal fun FragmentActivity.registerOnForgetHandler(cardsIdsProducer: suspend () -> List<CardId>) {
     setFragmentResultListener(ForgetCardsDialog.REQUEST_KEY_FORGET) { _, bundle ->
         forgetCards(
             cardsIdsProducer = cardsIdsProducer,
@@ -165,7 +167,23 @@ internal fun AnkiActivity.registerOnForgetHandler(cardsIdsProducer: suspend () -
     }
 }
 
-private fun AnkiActivity.forgetCards(
+/**
+ * Listen for requests from [ForgetCardsDialog] and triggers backend calls to reset progress for
+ * current selected/reviewed card/cards. Callers need to supply the list of cards ids.
+ *
+ * @param cardsIdsProducer lambda which returns the list of cards for which to reset the progress
+ */
+internal fun Fragment.registerOnForgetHandler(cardsIdsProducer: suspend () -> List<CardId>) {
+    setFragmentResultListener(ForgetCardsDialog.REQUEST_KEY_FORGET) { _, bundle ->
+        activity?.forgetCards(
+            cardsIdsProducer = cardsIdsProducer,
+            restoreOriginalPositionIfPossible = bundle.getBoolean(ForgetCardsDialog.ARG_RESTORE_ORIGINAL),
+            resetRepetitionAndLapseCounts = bundle.getBoolean(ForgetCardsDialog.ARG_RESET_REPETITION),
+        )
+    }
+}
+
+private fun FragmentActivity.forgetCards(
     cardsIdsProducer: suspend () -> List<CardId>,
     restoreOriginalPositionIfPossible: Boolean,
     resetRepetitionAndLapseCounts: Boolean,

AnkiDroid/src/main/java/com/ichi2/anki/ui/windows/reviewer/ReviewerFragment.kt

@@ -70,7 +70,9 @@ import com.ichi2.anki.previewer.setFrameStyle
 import com.ichi2.anki.previewer.stdHtml
 import com.ichi2.anki.reviewer.BindingMap
 import com.ichi2.anki.reviewer.ReviewerBinding
+import com.ichi2.anki.scheduling.ForgetCardsDialog
 import com.ichi2.anki.scheduling.SetDueDateDialog
+import com.ichi2.anki.scheduling.registerOnForgetHandler
 import com.ichi2.anki.settings.Prefs
 import com.ichi2.anki.settings.enums.FrameStyle
 import com.ichi2.anki.settings.enums.HideSystemBars
@@ -94,6 +96,8 @@ import com.squareup.seismic.ShakeDetector
 import dev.androidbroadcast.vbpd.viewBinding
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.launch
 import timber.log.Timber
 import kotlin.math.max
@@ -176,6 +180,7 @@ class ReviewerFragment :
         setupToolbarPosition()
         setupAnswerTimer()
         setupMargins()
+        setupResetProgress()
         setupCheckPronunciation()
         setupActions()
         setupWhiteboard()
@@ -499,6 +504,17 @@ class ReviewerFragment :
         }
     }
 
+    private fun setupResetProgress() {
+        viewModel.resetProgressFlow
+            .flowWithLifecycle(lifecycle)
+            .onEach {
+                showDialogFragment(ForgetCardsDialog())
+            }.launchIn(lifecycleScope)
+        // TODO handle 'Reset progress' in the ViewModel instead of the activity, once
+        //  a mechanism of showing a progress bar if the operation takes too long is implemented
+        registerOnForgetHandler { listOf(viewModel.getCardId()) }
+    }
+
     private fun setupCheckPronunciation() {
         viewModel.voiceRecorderEnabledFlow.flowWithLifecycle(lifecycle).collectIn(lifecycleScope) { isEnabled ->
             if (isEnabled && binding.checkPronunciationContainer.getFragment<CheckPronunciationFragment?>() == null) {

AnkiDroid/src/main/java/com/ichi2/anki/ui/windows/reviewer/ReviewerViewModel.kt

@@ -114,6 +114,7 @@ class ReviewerViewModel(
     val destinationFlow = MutableSharedFlow<Destination>()
     val editNoteTagsFlow = MutableSharedFlow<NoteId>()
     val setDueDateFlow = MutableSharedFlow<CardId>()
+    val resetProgressFlow = MutableSharedFlow<Unit>()
     val answerFeedbackFlow = MutableSharedFlow<Rating>()
     val voiceRecorderEnabledFlow = MutableStateFlow(false)
     val whiteboardEnabledFlow = MutableStateFlow(repository.isWhiteboardEnabled)
@@ -200,6 +201,8 @@ class ReviewerViewModel(
         executeAction(action)
     }
 
+    suspend fun getCardId() = currentCard.await().id
+
     /**
      * Sends an [eval] request to load the card answer, and updates components
      * with behavior specific to the `Answer` card side.
@@ -659,6 +662,8 @@ class ReviewerViewModel(
         setDueDateFlow.emit(cardId)
     }
 
+    private suspend fun launchResetProgress() = resetProgressFlow.emit(Unit)
+
     private suspend fun setupAnswerTimer(card: Card) {
         val shouldShowTimer = withCol { card.shouldShowTimer(this@withCol) }
         val limitMs = withCol { card.timeLimit(this@withCol) }
@@ -692,6 +697,7 @@ class ReviewerViewModel(
                     ViewerAction.REDO -> redo()
                     ViewerAction.UNDO -> undo()
                     ViewerAction.RESCHEDULE_NOTE -> launchSetDueDate()
+                    ViewerAction.RESET_PROGRESS -> launchResetProgress()
                     ViewerAction.TOGGLE_AUTO_ADVANCE -> toggleAutoAdvance()
                     ViewerAction.BURY_NOTE -> buryNote()
                     ViewerAction.BURY_CARD -> buryCard()

AnkiDroid/src/main/res/values/ids.xml

@@ -44,6 +44,7 @@
     <item type="id" name="action_record_voice"/>
     <item type="id" name="action_replay_media"/>
     <item type="id" name="action_set_due_date"/>
+    <item type="id" name="action_reset_progress"/>
     <item type="id" name="action_browse"/>
     <item type="id" name="action_statistics"/>