gistfile1.diff

diff --git a/app/src/main/java/org/lineageos/recorder/ListActivity.java b/app/src/main/java/org/lineageos/recorder/ListActivity.java
index 5917b54..0d950e5 100644
--- a/app/src/main/java/org/lineageos/recorder/ListActivity.java
+++ b/app/src/main/java/org/lineageos/recorder/ListActivity.java
@@ -18,6 +18,10 @@ package org.lineageos.recorder;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
+import android.view.ActionMode;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
 import android.view.View;
 import android.widget.ProgressBar;
 import android.widget.TextView;
@@ -40,6 +44,8 @@ public class ListActivity extends AppCompatActivity implements RecordingItemCall
     private static final String TYPE_AUDIO = "audio/*";
 
     private RecordingsAdapter mAdapter;
+    private ActionMode mActionMode;
+    private ActionModeCallback mActionModeCallback;
 
     @Override
     protected void onCreate(@Nullable Bundle savedInstanceState) {
@@ -81,6 +87,8 @@ public class ListActivity extends AppCompatActivity implements RecordingItemCall
                 mAdapter.setData(list);
             }
         });
+
+        mActionModeCallback = new ActionModeCallback();
     }
 
     @Override
@@ -124,4 +132,51 @@ public class ListActivity extends AppCompatActivity implements RecordingItemCall
         );
         dialog.show();
     }
+
+    @Override
+    public void onRowClicked(int position) {
+        if (mActionMode != null) {
+            mAdapter.toggleSelection(position);
+        } else {
+            onPlay(mAdapter.getUri(position));
+        }
+    }
+
+    @Override
+    public boolean onRowLongClicked(int position) {
+        if (mActionMode == null) {
+            mActionMode = startActionMode(mActionModeCallback);
+        }
+        mAdapter.setChecked(position, true);
+        return true;
+    }
+
+    private class ActionModeCallback implements ActionMode.Callback {
+        @Override
+        public boolean onCreateActionMode(ActionMode mode, Menu menu) {
+            MenuInflater inflater = mode.getMenuInflater();
+            inflater.inflate(R.menu.menu_actions, menu);
+            return true;
+        }
+
+        @Override
+        public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
+            return false;
+        }
+
+        @Override
+        public void onDestroyActionMode(ActionMode mode) {
+            mAdapter.removeSelection();
+            mActionMode = null;
+        }
+
+        @Override
+        public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
+            switch (item.getItemId()) {
+                case R.id.menu_delete:
+                    break;
+            }
+            return true;
+        }
+    }
 }
diff --git a/app/src/main/java/org/lineageos/recorder/list/RecordingItemCallbacks.java b/app/src/main/java/org/lineageos/recorder/list/RecordingItemCallbacks.java
index ef0c53a..ef17afc 100644
--- a/app/src/main/java/org/lineageos/recorder/list/RecordingItemCallbacks.java
+++ b/app/src/main/java/org/lineageos/recorder/list/RecordingItemCallbacks.java
@@ -24,4 +24,7 @@ public interface RecordingItemCallbacks {
     void onShare(@NonNull Uri uri);
     void onDelete(int index, @NonNull Uri uri);
     void onRename(int index, @NonNull Uri uri, @NonNull String currentName);
+
+    void onRowClicked(int position);
+    boolean onRowLongClicked(int position);
 }
diff --git a/app/src/main/java/org/lineageos/recorder/list/RecordingItemViewHolder.java b/app/src/main/java/org/lineageos/recorder/list/RecordingItemViewHolder.java
index 8bbf4d9..bc46177 100644
--- a/app/src/main/java/org/lineageos/recorder/list/RecordingItemViewHolder.java
+++ b/app/src/main/java/org/lineageos/recorder/list/RecordingItemViewHolder.java
@@ -31,9 +31,11 @@ import java.util.Locale;
 public class RecordingItemViewHolder extends RecyclerView.ViewHolder {
     private static final String SUMMARY_FORMAT = "%s - %02d:%02d";
 
+    private final View mItemView;
     private final SimpleDateFormat mDateFormat;
     private final TextView mTitleView;
     private final TextView mSummaryView;
+    private final RecordingItemCallbacks mCallbacks;
     private Uri mUri;
 
     public RecordingItemViewHolder(@NonNull View itemView,
@@ -41,7 +43,9 @@ public class RecordingItemViewHolder extends RecyclerView.ViewHolder {
                                    @NonNull SimpleDateFormat dateFormat) {
         super(itemView);
 
+        mItemView = itemView;
         mDateFormat = dateFormat;
+        mCallbacks = callbacks;
         mTitleView = itemView.findViewById(R.id.item_title);
         mSummaryView = itemView.findViewById(R.id.item_date);
         ImageView playView = itemView.findViewById(R.id.item_play);
@@ -66,4 +70,13 @@ public class RecordingItemViewHolder extends RecyclerView.ViewHolder {
         mSummaryView.setText(String.format(Locale.getDefault(), SUMMARY_FORMAT,
                 mDateFormat.format(data.getDate()), minutes, seconds));
     }
+
+    public Uri getUri() {
+        return mUri;
+    }
+
+    public void setClickEvents(int position) {
+        mItemView.setOnClickListener(v -> mCallbacks.onRowClicked(position));
+        mItemView.setOnLongClickListener(v -> mCallbacks.onRowLongClicked(position));
+    }
 }
diff --git a/app/src/main/java/org/lineageos/recorder/list/RecordingsAdapter.java b/app/src/main/java/org/lineageos/recorder/list/RecordingsAdapter.java
index 57347a0..4f6f402 100644
--- a/app/src/main/java/org/lineageos/recorder/list/RecordingsAdapter.java
+++ b/app/src/main/java/org/lineageos/recorder/list/RecordingsAdapter.java
@@ -15,6 +15,8 @@
  */
 package org.lineageos.recorder.list;
 
+import android.net.Uri;
+import android.util.SparseBooleanArray;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -39,6 +41,9 @@ public class RecordingsAdapter extends RecyclerView.Adapter<RecordingItemViewHol
     @NonNull
     private List<RecordingData> mData;
 
+    private SparseBooleanArray mCheckStates = new SparseBooleanArray();
+
+
     public RecordingsAdapter(@NonNull RecordingItemCallbacks callbacks) {
         mCallbacks = callbacks;
         mData = new ArrayList<>();
@@ -55,6 +60,7 @@ public class RecordingsAdapter extends RecyclerView.Adapter<RecordingItemViewHol
     @Override
     public void onBindViewHolder(@NonNull RecordingItemViewHolder holder, int position) {
         holder.setData(mData.get(position));
+        holder.setClickEvents(position);
     }
 
     @Override
@@ -78,4 +84,21 @@ public class RecordingsAdapter extends RecyclerView.Adapter<RecordingItemViewHol
                 oldData.getDuration()));
         notifyItemChanged(index);
     }
+
+    public Uri getUri(int index) {
+        return mData.get(index).getUri();
+    }
+
+    public void removeSelection() {
+        mCheckStates = new SparseBooleanArray();
+        notifyDataSetChanged();
+    }
+
+    public void setChecked(int position, boolean checked) {
+        mCheckStates.put(position, checked);
+    }
+
+    public void toggleSelection(int position) {
+        mCheckStates.put(position, !mCheckStates.get(position, false));
+    }
 }
diff --git a/app/src/main/res/layout/activity_list.xml b/app/src/main/res/layout/activity_list.xml
index 463adac..5dae96b 100644
--- a/app/src/main/res/layout/activity_list.xml
+++ b/app/src/main/res/layout/activity_list.xml
@@ -19,12 +19,19 @@
     android:layout_height="match_parent"
     android:orientation="vertical">
 
-    <androidx.appcompat.widget.Toolbar
-        android:id="@+id/toolbar"
+    <com.google.android.material.appbar.AppBarLayout
+        android:id="@+id/app_bar"
         android:layout_width="match_parent"
-        android:layout_height="?attr/actionBarSize"
-        android:background="?android:attr/colorPrimary"
-        android:elevation="8dp" />
+        android:layout_height="wrap_content"
+        android:elevation="8dp">
+
+        <androidx.appcompat.widget.Toolbar
+            android:id="@+id/toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:background="?android:attr/colorPrimary"
+            android:elevation="8dp" />
+    </com.google.android.material.appbar.AppBarLayout>
 
     <FrameLayout
         android:layout_width="match_parent"