Implement non-ui logic for delete/undo delete voicemails

When a voicemail is deleted we have to allow the user the option of cancelling the deleting of voicemail. This is done by showing the user a snack bar which when a user taps will prevent the voicemail from being deleted.
This CL only adds the underlying logic for the delete/undelete to take place via a ScheduledFuture, it does not fix all the UI issues that come with it, which will be sent in a follow up CL, issues such as:
-Updating the group label when a delete/undo happens
-Updating the entries above and below when a delete/undo happens
-Showing the empty view immediately when a user deletes a single voicemail
-Removing the empty view immediately when a user taps undo
-Updating tests

Bug: 69858266
Test: Manual
PiperOrigin-RevId: 188424489
Change-Id: Iecf5cb7be5b80fa5e91acaad3a7cc4a6c8702521

4 files changed, 112 insertions, 32 deletions

diff --git a/java/com/android/dialer/voicemail/listui/NewVoicemailAdapter.java b/java/com/android/dialer/voicemail/listui/NewVoicemailAdapter.java
index 07a37c3cc..5eeb0fb59 100644
--- a/java/com/android/dialer/voicemail/listui/NewVoicemailAdapter.java
+++ b/java/com/android/dialer/voicemail/listui/NewVoicemailAdapter.java
@@ -29,6 +29,7 @@ import android.provider.VoicemailContract.Voicemails;
 import android.support.annotation.IntDef;
 import android.support.annotation.Nullable;
 import android.support.annotation.WorkerThread;
+import android.support.design.widget.Snackbar;
 import android.support.v7.widget.RecyclerView;
 import android.support.v7.widget.RecyclerView.ViewHolder;
 import android.util.ArrayMap;
@@ -36,11 +37,11 @@ import android.util.ArraySet;
 import android.util.Pair;
 import android.view.LayoutInflater;
 import android.view.View;
+import android.view.View.OnClickListener;
 import android.view.ViewGroup;
 import com.android.dialer.calllogutils.CallLogDates;
 import com.android.dialer.common.Assert;
 import com.android.dialer.common.LogUtil;
-import com.android.dialer.common.concurrent.DialerExecutor.Worker;
 import com.android.dialer.common.concurrent.DialerExecutorComponent;
 import com.android.dialer.common.concurrent.ThreadUtil;
 import com.android.dialer.glidephotomanager.GlidePhotoManager;
@@ -62,6 +63,8 @@ import java.util.Set;
 final class NewVoicemailAdapter extends RecyclerView.Adapter<ViewHolder>
     implements NewVoicemailViewHolderListener {
 
+  private static final int VOICEMAIL_DELETE_DELAY_MS = 3000;
+
   /** IntDef for the different types of rows that can be shown in the call log. */
   @Retention(RetentionPolicy.SOURCE)
   @IntDef({RowType.HEADER, RowType.VOICEMAIL_ENTRY, RowType.VOICEMAIL_ALERT})
@@ -640,37 +643,107 @@ final class NewVoicemailAdapter extends RecyclerView.Adapter<ViewHolder>
 
     collapseExpandedViewHolder(expandedViewHolder);
 
-    Worker<Pair<Context, Uri>, Void> deleteVoicemail = this::deleteVoicemail;
-
-    DialerExecutorComponent.get(context)
-        .dialerExecutorFactory()
-        .createNonUiTaskBuilder(deleteVoicemail)
-        .build()
-        .executeSerial(new Pair<>(context, voicemailUri));
-
-    notifyItemRemoved(expandedViewHolder.getAdapterPosition());
+    showUndoSnackbar(
+        context,
+        expandedViewHolder.getMediaPlayerView(),
+        expandedViewHolder.getAdapterPosition(),
+        voicemailUri);
   }
 
-  @WorkerThread
-  private Void deleteVoicemail(Pair<Context, Uri> contextUriPair) {
-    Assert.isWorkerThread();
-    LogUtil.enterBlock("NewVoicemailAdapter.deleteVoicemail");
-
-    Context context = contextUriPair.first;
-    Uri uri = contextUriPair.second;
-    LogUtil.i("NewVoicemailAdapter.deleteVoicemail", "deleting uri:%s", String.valueOf(uri));
-    ContentValues values = new ContentValues();
-    values.put(Voicemails.DELETED, "1");
-
-    int numRowsUpdated = context.getContentResolver().update(uri, values, null, null);
-
-    LogUtil.i("NewVoicemailAdapter.onVoicemailDeleted", "return value:%d", numRowsUpdated);
-    Assert.checkArgument(numRowsUpdated == 1, "voicemail delete was not successful");
-
-    Intent intent = new Intent(VoicemailClient.ACTION_UPLOAD);
-    intent.setPackage(context.getPackageName());
-    context.sendBroadcast(intent);
-    return null;
+  private void showUndoSnackbar(
+      Context context, View newVoicemailMediaPlayerView, int position, Uri voicemailUri) {
+    LogUtil.i(
+        "NewVoicemailAdapter.showUndoSnackbar",
+        "position:%d and uri:%s",
+        position,
+        String.valueOf(voicemailUri));
+    Snackbar undoSnackbar =
+        Snackbar.make(
+            newVoicemailMediaPlayerView,
+            R.string.snackbar_voicemail_deleted,
+            VOICEMAIL_DELETE_DELAY_MS);
+    undoSnackbar.addCallback(
+        new Snackbar.Callback() {
+          @Override
+          public void onShown(Snackbar sb) {
+            notifyItemRemoved(position);
+            LogUtil.i(
+                "NewVoicemailAdapter.showUndoSnackbar",
+                "onShown for position:%d and uri:%s",
+                position,
+                voicemailUri);
+            super.onShown(sb);
+          }
+
+          @Override
+          public void onDismissed(Snackbar transientBottomBar, int event) {
+            LogUtil.i(
+                "NewVoicemailAdapter.showUndoSnackbar",
+                "onDismissed for event:%d, position:%d and uri:%s",
+                event,
+                position,
+                String.valueOf(voicemailUri));
+
+            switch (event) {
+              case DISMISS_EVENT_SWIPE:
+              case DISMISS_EVENT_ACTION:
+              case DISMISS_EVENT_MANUAL:
+                LogUtil.i(
+                    "NewVoicemailAdapter.showUndoSnackbar",
+                    "Not proceeding with deleting the voicemail");
+                deletedVoicemailPosition.remove(position);
+                notifyItemChanged(position);
+                break;
+              case DISMISS_EVENT_TIMEOUT:
+              case DISMISS_EVENT_CONSECUTIVE:
+                LogUtil.i(
+                    "NewVoicemailAdapter.showUndoSnackbar", "Proceeding with deleting voicemail");
+
+                DialerExecutorComponent.get(context)
+                    .dialerExecutorFactory()
+                    .createNonUiTaskBuilder(this::deleteVoicemail)
+                    .build()
+                    .executeSerial(new Pair<>(context, voicemailUri));
+                break;
+              default:
+                Assert.checkArgument(event <= 4 && event >= 0, "unknown event");
+            }
+          }
+
+          @WorkerThread
+          private Void deleteVoicemail(Pair<Context, Uri> contextUriPair) {
+            Assert.isWorkerThread();
+            Context context = contextUriPair.first;
+            Uri uri = contextUriPair.second;
+            LogUtil.i(
+                "NewVoicemailAdapter.deleteVoicemail", "deleting uri:%s", String.valueOf(uri));
+            ContentValues values = new ContentValues();
+            values.put(Voicemails.DELETED, "1");
+
+            int numRowsUpdated = context.getContentResolver().update(uri, values, null, null);
+
+            LogUtil.i("NewVoicemailAdapter.deleteVoicemail", "return value:%d", numRowsUpdated);
+            Assert.checkArgument(numRowsUpdated == 1, "voicemail delete was not successful");
+
+            Intent intent = new Intent(VoicemailClient.ACTION_UPLOAD);
+            intent.setPackage(context.getPackageName());
+            context.sendBroadcast(intent);
+            return null;
+          }
+        });
+
+    undoSnackbar
+        .setAction(
+            R.string.snackbar_undo,
+            new OnClickListener() {
+              @Override
+              public void onClick(View v) {
+                // does nothing, but needed for the undo button to show
+              }
+            })
+        .setActionTextColor(
+            context.getResources().getColor(R.color.dialer_snackbar_action_text_color))
+        .show();
   }
 
   /**
diff --git a/java/com/android/dialer/voicemail/listui/NewVoicemailFragment.java b/java/com/android/dialer/voicemail/listui/NewVoicemailFragment.java
index 3a5e72b6b..72f0ab542 100644
--- a/java/com/android/dialer/voicemail/listui/NewVoicemailFragment.java
+++ b/java/com/android/dialer/voicemail/listui/NewVoicemailFragment.java
@@ -205,7 +205,7 @@ public final class NewVoicemailFragment extends Fragment implements LoaderCallba
 
   /** Shows the view when there are no voicemails to be displayed * */
   private void showEmptyVoicemailFragmentView() {
-    LogUtil.enterBlock("NewVoicemailFragmentListener.showEmptyVoicemailFragmentView");
+    LogUtil.enterBlock("NewVoicemailFragment.showEmptyVoicemailFragmentView");
 
     showView(emptyContentView);
 
@@ -215,7 +215,7 @@ public final class NewVoicemailFragment extends Fragment implements LoaderCallba
   }
 
   private void showView(View view) {
-    LogUtil.i("NewVoicemailFragmentListener.showView", "Showing view: " + view);
+    LogUtil.i("NewVoicemailFragment.showView", "Showing view: " + view);
     emptyContentView.setVisibility(view == emptyContentView ? View.VISIBLE : View.GONE);
     recyclerView.setVisibility(view == recyclerView ? View.VISIBLE : View.GONE);
   }
diff --git a/java/com/android/dialer/voicemail/listui/NewVoicemailViewHolder.java b/java/com/android/dialer/voicemail/listui/NewVoicemailViewHolder.java
index 1d42e647a..1f857840e 100644
--- a/java/com/android/dialer/voicemail/listui/NewVoicemailViewHolder.java
+++ b/java/com/android/dialer/voicemail/listui/NewVoicemailViewHolder.java
@@ -94,6 +94,10 @@ final class NewVoicemailViewHolder extends RecyclerView.ViewHolder implements On
     viewHolderVoicemailUri = null;
   }
 
+  public NewVoicemailMediaPlayerView getMediaPlayerView() {
+    return Assert.isNotNull(mediaPlayerView);
+  }
+
   /**
    * When the {@link RecyclerView} displays voicemail entries, it might recycle the views upon
    * scrolling. In that case we need to ensure that the member variables of this {@link
diff --git a/java/com/android/dialer/voicemail/listui/res/values/strings.xml b/java/com/android/dialer/voicemail/listui/res/values/strings.xml
index d12a71ee6..322912eb2 100644
--- a/java/com/android/dialer/voicemail/listui/res/values/strings.xml
+++ b/java/com/android/dialer/voicemail/listui/res/values/strings.xml
@@ -60,4 +60,7 @@ If you do not accept all of these terms and conditions, do not use Visual Voice
   <!-- Text displayed when the list of voicemails is empty [CHAR LIMIT=NONE] -->
   <string name="empty_voicemail_tab_text">Your voicemail inbox is empty.</string>
 
+  <!-- Text for snackbar to undo a voicemail delete. [CHAR LIMIT=30] -->
+  <string name="snackbar_voicemail_deleted">Voicemail deleted</string>
+
 </resources>