Merge pull request #2717 from kszczek/delete-finished-downloads

Add option to delete files when clearing finished downloads

app/src/main/java/us/shandian/giga/ui/adapter/MissionAdapter.java

@@ -5,6 +5,7 @@ import android.app.Activity;
 import android.app.ProgressDialog;
 import android.content.Context;
 import android.content.Intent;
+import android.graphics.Color;
 import android.net.Uri;
 import android.os.AsyncTask;
 import android.os.Build;
@@ -35,6 +36,8 @@ import androidx.recyclerview.widget.RecyclerView;
 import androidx.recyclerview.widget.RecyclerView.Adapter;
 import androidx.recyclerview.widget.RecyclerView.ViewHolder;
 
+import com.google.android.material.snackbar.Snackbar;
+
 import org.schabi.newpipe.BuildConfig;
 import org.schabi.newpipe.R;
 import org.schabi.newpipe.extractor.NewPipe;
@@ -46,6 +49,7 @@ import java.io.File;
 import java.lang.ref.WeakReference;
 import java.net.URI;
 import java.util.ArrayList;
+import java.util.Iterator;
 
 import us.shandian.giga.get.DownloadMission;
 import us.shandian.giga.get.FinishedMission;
@@ -104,8 +108,12 @@ public class MissionAdapter extends Adapter<ViewHolder> implements Handler.Callb
     private MenuItem mPauseButton;
     private View mEmptyMessage;
     private RecoverHelper mRecover;
+    private View mView;
+    private ArrayList<Mission> mHidden;
+    private Snackbar mSnackbar;
 
     private final Runnable rUpdater = this::updater;
+    private final Runnable rDelete = this::deleteFinishedDownloads;
 
     public MissionAdapter(Context context, @NonNull DownloadManager downloadManager, View emptyMessage, View root) {
         mContext = context;
@@ -122,6 +130,10 @@ public class MissionAdapter extends Adapter<ViewHolder> implements Handler.Callb
 
         mDeleter = new Deleter(root, mContext, this, mDownloadManager, mIterator, mHandler);
 
+        mView = root;
+
+        mHidden = new ArrayList<>();
+
         checkEmptyMessageVisibility();
         onResume();
     }
@@ -557,9 +569,50 @@ public class MissionAdapter extends Adapter<ViewHolder> implements Handler.Callb
         );
     }
 
-    public void clearFinishedDownloads() {
-        mDownloadManager.forgetFinishedDownloads();
-        applyChanges();
+    public void clearFinishedDownloads(boolean delete) {
+        if (delete && mIterator.hasFinishedMissions() && mHidden.isEmpty()) {
+            for (int i = 0; i < mIterator.getOldListSize(); i++) {
+                FinishedMission mission = mIterator.getItem(i).mission instanceof FinishedMission ? (FinishedMission) mIterator.getItem(i).mission : null;
+                if (mission != null) {
+                    mIterator.hide(mission);
+                    mHidden.add(mission);
+                }
+            }
+            applyChanges();
+
+            String msg = String.format(mContext.getString(R.string.deleted_downloads), mHidden.size());
+            mSnackbar = Snackbar.make(mView, msg, Snackbar.LENGTH_INDEFINITE);
+            mSnackbar.setAction(R.string.undo, s -> {
+                Iterator<Mission> i = mHidden.iterator();
+                while (i.hasNext()) {
+                    mIterator.unHide(i.next());
+                    i.remove();
+                }
+                applyChanges();
+                mHandler.removeCallbacks(rDelete);
+            });
+            mSnackbar.setActionTextColor(Color.YELLOW);
+            mSnackbar.show();
+
+            mHandler.postDelayed(rDelete, 5000);
+        } else if (!delete) {
+            mDownloadManager.forgetFinishedDownloads();
+            applyChanges();
+        }
+    }
+
+    private void deleteFinishedDownloads() {
+        if (mSnackbar != null) mSnackbar.dismiss();
+
+        Iterator<Mission> i = mHidden.iterator();
+        while (i.hasNext()) {
+            Mission mission = i.next();
+            if (mission != null) {
+                mDownloadManager.deleteMission(mission);
+                mContext.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, mission.storage.getUri()));
+            }
+            i.remove();
+        }
     }
 
     private boolean handlePopupItem(@NonNull ViewHolderItem h, @NonNull MenuItem option) {

app/src/main/java/us/shandian/giga/ui/fragment/MissionsFragment.java

@@ -17,6 +17,7 @@ import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.CheckBox;
 import android.widget.Toast;
 
 import androidx.annotation.NonNull;
@@ -189,10 +190,12 @@ public class MissionsFragment extends Fragment {
                 return true;
             case R.id.clear_list:
                 AlertDialog.Builder prompt = new AlertDialog.Builder(mContext);
-                prompt.setTitle(R.string.clear_finished_download);
+                prompt.setTitle(R.string.clear_download_history);
                 prompt.setMessage(R.string.confirm_prompt);
-                prompt.setPositiveButton(android.R.string.ok, (dialog, which) -> mAdapter.clearFinishedDownloads());
-                prompt.setNegativeButton(R.string.cancel, null);
+                // Intentionally misusing button's purpose in order to achieve good order
+                prompt.setNegativeButton(R.string.clear_download_history, (dialog, which) -> mAdapter.clearFinishedDownloads(false));
+                prompt.setPositiveButton(R.string.delete_downloaded_files, (dialog, which) -> mAdapter.clearFinishedDownloads(true));
+                prompt.setNeutralButton(R.string.cancel, null);
                 prompt.create().show();
                 return true;
             case R.id.start_downloads:

app/src/main/res/menu/download_menu.xml

@@ -24,7 +24,7 @@
     <item android:id="@+id/clear_list"
         android:visible="false"
         android:icon="?attr/ic_delete"
-        android:title="@string/clear_finished_download"
+        android:title="@string/clear_download_history"
         app:showAsAction="ifRoom" />
 
     <item android:id="@+id/action_settings"

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

@@ -569,8 +569,10 @@
     <string name="error_progress_lost">Progress lost, because the file was deleted</string>
     <string name="error_timeout">Connection timeout</string>
     <string name="error_download_resource_gone">Cannot recover this download</string>
-    <string name="clear_finished_download">Clear finished downloads</string>
-    <string name="confirm_prompt">Are you sure?</string>
+    <string name="clear_download_history">Clear download history</string>
+    <string name="confirm_prompt">Do you want to clear your download history or delete all downloaded files?</string>
+    <string name="delete_downloaded_files">Delete downloaded files</string>
+    <string name="deleted_downloads">Deleted %1$s downloads</string>
     <string name="stop">Stop</string>
     <string name="max_retry_msg">Maximum retries</string>
     <string name="max_retry_desc">Maximum number of attempts before canceling the download</string>
@@ -587,5 +589,4 @@
     <string name="downloads_storage_use_saf_title">Use SAF</string>
     <string name="downloads_storage_use_saf_summary">The Storage Access Framework allows downloads to an external SD card.\nNote: some devices are not compatible</string>
     <string name="choose_instance_prompt">Choose an instance</string>
-
 </resources>