PlayerAndroid/app/src/main/java/code/name/monkey/retromusic/fragments/folder/FoldersFragment.java

943 lines
37 KiB
Java

/*
* Copyright (c) 2020 Hemanth Savarala.
*
* Licensed under the GNU General Public License v3
*
* This is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by
* the Free Software Foundation either version 3 of the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*/
package code.name.monkey.retromusic.fragments.folder;
import static code.name.monkey.appthemehelper.common.ATHToolbarActivity.getToolbarBackgroundColor;
import android.app.Dialog;
import android.content.Context;
import android.media.MediaScannerConnection;
import android.os.Bundle;
import android.os.Environment;
import android.text.Html;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.MarginLayoutParams;
import android.webkit.MimeTypeMap;
import android.widget.PopupMenu;
import android.widget.Toast;
import androidx.activity.OnBackPressedCallback;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.loader.app.LoaderManager;
import androidx.loader.content.Loader;
import androidx.navigation.Navigation;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import com.afollestad.materialcab.MaterialCab;
import com.google.android.material.dialog.MaterialAlertDialogBuilder;
import com.google.android.material.snackbar.Snackbar;
import com.google.android.material.transition.MaterialFadeThrough;
import com.google.android.material.transition.MaterialSharedAxis;
import org.jetbrains.annotations.NotNull;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileFilter;
import java.io.FileReader;
import java.io.IOException;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.StringTokenizer;
import code.name.monkey.appthemehelper.ThemeStore;
import code.name.monkey.appthemehelper.util.ATHUtil;
import code.name.monkey.appthemehelper.util.ToolbarContentTintHelper;
import code.name.monkey.retromusic.App;
import code.name.monkey.retromusic.R;
import code.name.monkey.retromusic.adapter.SongFileAdapter;
import code.name.monkey.retromusic.adapter.Storage;
import code.name.monkey.retromusic.adapter.StorageAdapter;
import code.name.monkey.retromusic.adapter.StorageClickListener;
import code.name.monkey.retromusic.databinding.FragmentFolderBinding;
import code.name.monkey.retromusic.fragments.base.AbsMainActivityFragment;
import code.name.monkey.retromusic.helper.MusicPlayerRemote;
import code.name.monkey.retromusic.helper.menu.SongMenuHelper;
import code.name.monkey.retromusic.helper.menu.SongsMenuHelper;
import code.name.monkey.retromusic.interfaces.ICabHolder;
import code.name.monkey.retromusic.interfaces.ICallbacks;
import code.name.monkey.retromusic.interfaces.IMainActivityFragmentCallbacks;
import code.name.monkey.retromusic.misc.DialogAsyncTask;
import code.name.monkey.retromusic.misc.UpdateToastMediaScannerCompletionListener;
import code.name.monkey.retromusic.misc.WrappedAsyncTaskLoader;
import code.name.monkey.retromusic.model.Song;
import code.name.monkey.retromusic.providers.BlacklistStore;
import code.name.monkey.retromusic.util.DensityUtil;
import code.name.monkey.retromusic.util.FileUtil;
import code.name.monkey.retromusic.util.PreferenceUtil;
import code.name.monkey.retromusic.util.RetroColorUtil;
import code.name.monkey.retromusic.util.ThemedFastScroller;
import code.name.monkey.retromusic.views.BreadCrumbLayout;
import code.name.monkey.retromusic.views.ScrollingViewOnApplyWindowInsetsListener;
import me.zhanghai.android.fastscroll.FastScroller;
public class FoldersFragment extends AbsMainActivityFragment
implements IMainActivityFragmentCallbacks,
ICabHolder,
BreadCrumbLayout.SelectionCallback,
ICallbacks,
LoaderManager.LoaderCallbacks<List<File>>, StorageClickListener {
private FragmentFolderBinding binding;
public static final String TAG = FoldersFragment.class.getSimpleName();
public static final FileFilter AUDIO_FILE_FILTER =
file ->
!file.isHidden()
&& (file.isDirectory()
|| FileUtil.fileIsMimeType(file, "audio/*", MimeTypeMap.getSingleton())
|| FileUtil.fileIsMimeType(file, "application/opus", MimeTypeMap.getSingleton())
|| FileUtil.fileIsMimeType(file, "application/ogg", MimeTypeMap.getSingleton()));
private static final String CRUMBS = "crumbs";
private static final int LOADER_ID = 5;
private SongFileAdapter adapter;
private StorageAdapter storageAdapter;
private MaterialCab cab;
private final Comparator<File> fileComparator =
(lhs, rhs) -> {
if (lhs.isDirectory() && !rhs.isDirectory()) {
return -1;
} else if (!lhs.isDirectory() && rhs.isDirectory()) {
return 1;
} else {
return lhs.getName().compareToIgnoreCase(rhs.getName());
}
};
private final ArrayList<Storage> storageItems = new ArrayList<>();
public FoldersFragment() {
super(R.layout.fragment_folder);
}
public static File getDefaultStartDirectory() {
File musicDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC);
File startFolder;
if (musicDir.exists() && musicDir.isDirectory()) {
startFolder = musicDir;
} else {
File externalStorage = Environment.getExternalStorageDirectory();
if (externalStorage.exists() && externalStorage.isDirectory()) {
startFolder = externalStorage;
} else {
startFolder = new File("/"); // root
}
}
return startFolder;
}
private static File tryGetCanonicalFile(File file) {
try {
return file.getCanonicalFile();
} catch (IOException e) {
e.printStackTrace();
return file;
}
}
@NonNull
@Override
public View onCreateView(
@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
binding = FragmentFolderBinding.inflate(inflater, container, false);
return binding.getRoot();
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
setEnterTransition(new MaterialFadeThrough());
setExitTransition(new MaterialFadeThrough());
getMainActivity().addMusicServiceEventListener(getLibraryViewModel());
getMainActivity().setSupportActionBar(binding.toolbar);
getMainActivity().getSupportActionBar().setTitle(null);
setStatusBarColorAuto(view);
setUpAppbarColor();
setUpBreadCrumbs();
setUpRecyclerView();
listRoots();
setUpAdapter();
setUpTitle();
requireActivity().getOnBackPressedDispatcher().addCallback(getViewLifecycleOwner(), new OnBackPressedCallback(true) {
@Override
public void handleOnBackPressed() {
if (!handleBackPress()) {
remove();
requireActivity().onBackPressed();
}
}
});
}
private void setUpTitle() {
binding.toolbar.setNavigationOnClickListener(
v -> {
setExitTransition(new MaterialSharedAxis(MaterialSharedAxis.Z, true).setDuration(300));
setReenterTransition(new MaterialSharedAxis(MaterialSharedAxis.Z, false).setDuration(300));
Navigation.findNavController(v).navigate(R.id.searchFragment, null, getNavOptions());
});
binding.appNameText.setText(getResources().getString(R.string.folders));
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
setHasOptionsMenu(true);
if (savedInstanceState == null) {
switchToFileAdapter();
setCrumb(
new BreadCrumbLayout.Crumb(
FileUtil.safeGetCanonicalFile(PreferenceUtil.INSTANCE.getStartDirectory())),
true);
} else {
binding.breadCrumbs.restoreFromStateWrapper(savedInstanceState.getParcelable(CRUMBS));
LoaderManager.getInstance(this).initLoader(LOADER_ID, null, this);
}
}
@Override
public void onPause() {
super.onPause();
saveScrollPosition();
}
@Override
public void onSaveInstanceState(@NonNull Bundle outState) {
super.onSaveInstanceState(outState);
if (binding != null) {
outState.putParcelable(CRUMBS, binding.breadCrumbs.getStateWrapper());
}
}
@Override
public boolean handleBackPress() {
if (cab != null && cab.isActive()) {
cab.finish();
return true;
}
if (binding.breadCrumbs.popHistory()) {
setCrumb(binding.breadCrumbs.lastHistory(), false);
return true;
}
return false;
}
@NonNull
@Override
public Loader<List<File>> onCreateLoader(int id, Bundle args) {
return new AsyncFileLoader(this);
}
@Override
public void onCrumbSelection(BreadCrumbLayout.Crumb crumb, int index) {
setCrumb(crumb, true);
}
@Override
public void onFileMenuClicked(final File file, @NotNull View view) {
PopupMenu popupMenu = new PopupMenu(getActivity(), view);
if (file.isDirectory()) {
popupMenu.inflate(R.menu.menu_item_directory);
popupMenu.setOnMenuItemClickListener(
item -> {
final int itemId = item.getItemId();
switch (itemId) {
case R.id.action_play_next:
case R.id.action_add_to_current_playing:
case R.id.action_add_to_playlist:
case R.id.action_delete_from_device:
new ListSongsAsyncTask(
getActivity(),
null,
(songs, extra) -> {
if (!songs.isEmpty()) {
SongsMenuHelper.INSTANCE.handleMenuClick(
requireActivity(), songs, itemId);
}
})
.execute(
new ListSongsAsyncTask.LoadingInfo(
toList(file), AUDIO_FILE_FILTER, getFileComparator()));
return true;
case R.id.action_add_to_blacklist:
BlacklistStore.getInstance(App.Companion.getContext()).addPath(file);
return true;
case R.id.action_set_as_start_directory:
PreferenceUtil.INSTANCE.setStartDirectory(file);
Toast.makeText(
getActivity(),
String.format(getString(R.string.new_start_directory), file.getPath()),
Toast.LENGTH_SHORT)
.show();
return true;
case R.id.action_scan:
new ListPathsAsyncTask(getActivity(), this::scanPaths)
.execute(new ListPathsAsyncTask.LoadingInfo(file, AUDIO_FILE_FILTER));
return true;
}
return false;
});
} else {
popupMenu.inflate(R.menu.menu_item_file);
popupMenu.setOnMenuItemClickListener(
item -> {
final int itemId = item.getItemId();
switch (itemId) {
case R.id.action_play_next:
case R.id.action_add_to_current_playing:
case R.id.action_add_to_playlist:
case R.id.action_go_to_album:
case R.id.action_go_to_artist:
case R.id.action_share:
case R.id.action_tag_editor:
case R.id.action_details:
case R.id.action_set_as_ringtone:
case R.id.action_delete_from_device:
new ListSongsAsyncTask(
getActivity(),
null,
(songs, extra) ->
SongMenuHelper.INSTANCE.handleMenuClick(
requireActivity(), songs.get(0), itemId))
.execute(
new ListSongsAsyncTask.LoadingInfo(
toList(file), AUDIO_FILE_FILTER, getFileComparator()));
return true;
case R.id.action_scan:
new ListPathsAsyncTask(getActivity(), this::scanPaths)
.execute(new ListPathsAsyncTask.LoadingInfo(file, AUDIO_FILE_FILTER));
return true;
}
return false;
});
}
popupMenu.show();
}
@Override
public void onFileSelected(@NotNull File file) {
file = tryGetCanonicalFile(file); // important as we compare the path value later
if (file.isDirectory()) {
setCrumb(new BreadCrumbLayout.Crumb(file), true);
} else {
FileFilter fileFilter =
pathname -> !pathname.isDirectory() && AUDIO_FILE_FILTER.accept(pathname);
new ListSongsAsyncTask(
getActivity(),
file,
(songs, extra) -> {
File file1 = (File) extra;
int startIndex = -1;
for (int i = 0; i < songs.size(); i++) {
if (file1
.getPath()
.equals(songs.get(i).getData())) { // path is already canonical here
startIndex = i;
break;
}
}
if (startIndex > -1) {
MusicPlayerRemote.openQueue(songs, startIndex, true);
} else {
final File finalFile = file1;
Snackbar.make(
binding.coordinatorLayout,
Html.fromHtml(
String.format(
getString(R.string.not_listed_in_media_store), file1.getName())),
Snackbar.LENGTH_LONG)
.setAction(
R.string.action_scan,
v ->
new ListPathsAsyncTask(requireActivity(), this::scanPaths)
.execute(
new ListPathsAsyncTask.LoadingInfo(
finalFile, AUDIO_FILE_FILTER)))
.setActionTextColor(ThemeStore.Companion.accentColor(requireActivity()))
.show();
}
})
.execute(
new ListSongsAsyncTask.LoadingInfo(
toList(file.getParentFile()), fileFilter, getFileComparator()));
}
}
@Override
public void onLoadFinished(@NonNull Loader<List<File>> loader, List<File> data) {
updateAdapter(data);
}
@Override
public void onLoaderReset(@NonNull Loader<List<File>> loader) {
updateAdapter(new LinkedList<>());
}
@Override
public void onMultipleItemAction(MenuItem item, @NotNull ArrayList<File> files) {
final int itemId = item.getItemId();
new ListSongsAsyncTask(
getActivity(),
null,
(songs, extra) ->
SongsMenuHelper.INSTANCE.handleMenuClick(requireActivity(), songs, itemId))
.execute(new ListSongsAsyncTask.LoadingInfo(files, AUDIO_FILE_FILTER, getFileComparator()));
}
@Override
public void onPrepareOptionsMenu(@NonNull Menu menu) {
super.onPrepareOptionsMenu(menu);
ToolbarContentTintHelper.handleOnPrepareOptionsMenu(requireActivity(), binding.toolbar);
}
@Override
public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
menu.add(0, R.id.action_scan, 0, R.string.scan_media)
.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
menu.add(0, R.id.action_go_to_start_directory, 1, R.string.action_go_to_start_directory)
.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
menu.removeItem(R.id.action_grid_size);
menu.removeItem(R.id.action_layout_type);
menu.removeItem(R.id.action_sort_order);
ToolbarContentTintHelper.handleOnCreateOptionsMenu(
requireContext(), binding.toolbar, menu, getToolbarBackgroundColor(binding.toolbar));
}
@Override
public boolean onOptionsItemSelected(@NonNull MenuItem item) {
switch (item.getItemId()) {
case R.id.action_go_to_start_directory:
setCrumb(
new BreadCrumbLayout.Crumb(
tryGetCanonicalFile(PreferenceUtil.INSTANCE.getStartDirectory())),
true);
return true;
case R.id.action_scan:
BreadCrumbLayout.Crumb crumb = getActiveCrumb();
if (crumb != null) {
//noinspection Convert2MethodRef
new ListPathsAsyncTask(getActivity(), paths -> scanPaths(paths))
.execute(new ListPathsAsyncTask.LoadingInfo(crumb.getFile(), AUDIO_FILE_FILTER));
}
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onQueueChanged() {
super.onQueueChanged();
checkForPadding();
}
@Override
public void onServiceConnected() {
super.onServiceConnected();
checkForPadding();
}
@NonNull
@Override
public MaterialCab openCab(int menuRes, @NotNull MaterialCab.Callback callback) {
if (cab != null && cab.isActive()) {
cab.finish();
}
cab =
new MaterialCab(getMainActivity(), R.id.cab_stub)
.setMenu(menuRes)
.setCloseDrawableRes(R.drawable.ic_close)
.setBackgroundColor(
RetroColorUtil.shiftBackgroundColorForLightText(
ATHUtil.INSTANCE.resolveColor(requireContext(), R.attr.colorSurface)))
.start(callback);
return cab;
}
private void checkForPadding() {
final int count = adapter.getItemCount();
if (binding != null) {
final MarginLayoutParams params = (MarginLayoutParams) binding.coordinatorLayout.getLayoutParams();
params.bottomMargin =
count > 0 && !MusicPlayerRemote.getPlayingQueue().isEmpty()
? DensityUtil.dip2px(requireContext(), 104f)
: DensityUtil.dip2px(requireContext(), 54f);
binding.coordinatorLayout.setLayoutParams(params);
}
}
private void checkIsEmpty() {
if (binding != null) {
binding.emptyEmoji.setText(getEmojiByUnicode(0x1F631));
binding.empty.setVisibility(
adapter == null || adapter.getItemCount() == 0 ? View.VISIBLE : View.GONE);
}
}
@Nullable
private BreadCrumbLayout.Crumb getActiveCrumb() {
if (binding != null) {
return binding.breadCrumbs.size() > 0
? binding.breadCrumbs.getCrumb(binding.breadCrumbs.getActiveIndex())
: null;
}
return null;
}
private String getEmojiByUnicode(int unicode) {
return new String(Character.toChars(unicode));
}
private Comparator<File> getFileComparator() {
return fileComparator;
}
private void saveScrollPosition() {
BreadCrumbLayout.Crumb crumb = getActiveCrumb();
if (crumb != null) {
crumb.setScrollPosition(
((LinearLayoutManager) binding.recyclerView.getLayoutManager()).findFirstVisibleItemPosition());
}
}
private void scanPaths(@Nullable String[] toBeScanned) {
if (getActivity() == null) {
return;
}
if (toBeScanned == null || toBeScanned.length < 1) {
Toast.makeText(getActivity(), R.string.nothing_to_scan, Toast.LENGTH_SHORT).show();
} else {
MediaScannerConnection.scanFile(
getActivity().getApplicationContext(),
toBeScanned,
null,
new UpdateToastMediaScannerCompletionListener(getActivity(), Arrays.asList(toBeScanned)));
}
}
private void setCrumb(BreadCrumbLayout.Crumb crumb, boolean addToHistory) {
if (crumb == null) {
return;
}
String path = crumb.getFile().getPath();
if (path.equals("/") || path.equals("/storage") || path.equals("/storage/emulated")) {
switchToStorageAdapter();
} else {
saveScrollPosition();
binding.breadCrumbs.setActiveOrAdd(crumb, false);
if (addToHistory) {
binding.breadCrumbs.addHistory(crumb);
}
LoaderManager.getInstance(this).restartLoader(LOADER_ID, null, this);
}
}
private void setUpAdapter() {
switchToFileAdapter();
}
private void setUpAppbarColor() {
binding.breadCrumbs.setActivatedContentColor(
ATHUtil.INSTANCE.resolveColor(requireContext(), android.R.attr.textColorPrimary));
binding.breadCrumbs.setDeactivatedContentColor(
ATHUtil.INSTANCE.resolveColor(requireContext(), android.R.attr.textColorSecondary));
}
private void setUpBreadCrumbs() {
binding.breadCrumbs.setCallback(this);
}
private void setUpRecyclerView() {
binding.recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
FastScroller fastScroller = ThemedFastScroller.INSTANCE.create(binding.recyclerView);
binding.recyclerView.setOnApplyWindowInsetsListener(
new ScrollingViewOnApplyWindowInsetsListener(binding.recyclerView, fastScroller));
}
private ArrayList<File> toList(File file) {
ArrayList<File> files = new ArrayList<>(1);
files.add(file);
return files;
}
private void updateAdapter(@NonNull List<File> files) {
adapter.swapDataSet(files);
BreadCrumbLayout.Crumb crumb = getActiveCrumb();
if (crumb != null) {
((LinearLayoutManager) binding.recyclerView.getLayoutManager())
.scrollToPositionWithOffset(crumb.getScrollPosition(), 0);
}
}
@Override
public void onDestroyView() {
super.onDestroyView();
binding = null;
}
public static class ListPathsAsyncTask
extends ListingFilesDialogAsyncTask<ListPathsAsyncTask.LoadingInfo, String, String[]> {
private final WeakReference<OnPathsListedCallback> onPathsListedCallbackWeakReference;
public ListPathsAsyncTask(Context context, OnPathsListedCallback callback) {
super(context);
onPathsListedCallbackWeakReference = new WeakReference<>(callback);
}
@Override
protected String[] doInBackground(LoadingInfo... params) {
try {
if (isCancelled() || checkCallbackReference() == null) {
return null;
}
LoadingInfo info = params[0];
final String[] paths;
if (info.file.isDirectory()) {
List<File> files = FileUtil.listFilesDeep(info.file, info.fileFilter);
if (isCancelled() || checkCallbackReference() == null) {
return null;
}
paths = new String[files.size()];
for (int i = 0; i < files.size(); i++) {
File f = files.get(i);
paths[i] = FileUtil.safeGetCanonicalPath(f);
if (isCancelled() || checkCallbackReference() == null) {
return null;
}
}
} else {
paths = new String[1];
paths[0] = info.file.getPath();
}
return paths;
} catch (Exception e) {
e.printStackTrace();
cancel(false);
return null;
}
}
@Override
protected void onPostExecute(String[] paths) {
super.onPostExecute(paths);
OnPathsListedCallback callback = checkCallbackReference();
if (callback != null && paths != null) {
callback.onPathsListed(paths);
}
}
@Override
protected void onPreExecute() {
super.onPreExecute();
checkCallbackReference();
}
private OnPathsListedCallback checkCallbackReference() {
OnPathsListedCallback callback = onPathsListedCallbackWeakReference.get();
if (callback == null) {
cancel(false);
}
return callback;
}
public interface OnPathsListedCallback {
void onPathsListed(@NonNull String[] paths);
}
public static class LoadingInfo {
public final File file;
final FileFilter fileFilter;
public LoadingInfo(File file, FileFilter fileFilter) {
this.file = file;
this.fileFilter = fileFilter;
}
}
}
private static class AsyncFileLoader extends WrappedAsyncTaskLoader<List<File>> {
private final WeakReference<FoldersFragment> fragmentWeakReference;
AsyncFileLoader(FoldersFragment foldersFragment) {
super(foldersFragment.requireActivity());
fragmentWeakReference = new WeakReference<>(foldersFragment);
}
@Override
public List<File> loadInBackground() {
FoldersFragment foldersFragment = fragmentWeakReference.get();
File directory = null;
if (foldersFragment != null) {
BreadCrumbLayout.Crumb crumb = foldersFragment.getActiveCrumb();
if (crumb != null) {
directory = crumb.getFile();
}
}
if (directory != null) {
List<File> files = FileUtil.listFiles(directory, AUDIO_FILE_FILTER);
Collections.sort(files, foldersFragment.getFileComparator());
return files;
} else {
return new LinkedList<>();
}
}
}
private static class ListSongsAsyncTask
extends ListingFilesDialogAsyncTask<ListSongsAsyncTask.LoadingInfo, Void, List<Song>> {
private final Object extra;
private final WeakReference<OnSongsListedCallback> callbackWeakReference;
private final WeakReference<Context> contextWeakReference;
ListSongsAsyncTask(Context context, Object extra, OnSongsListedCallback callback) {
super(context);
this.extra = extra;
contextWeakReference = new WeakReference<>(context);
callbackWeakReference = new WeakReference<>(callback);
}
@Override
protected List<Song> doInBackground(LoadingInfo... params) {
try {
LoadingInfo info = params[0];
List<File> files = FileUtil.listFilesDeep(info.files, info.fileFilter);
if (isCancelled() || checkContextReference() == null || checkCallbackReference() == null) {
return null;
}
Collections.sort(files, info.fileComparator);
Context context = checkContextReference();
if (isCancelled() || context == null || checkCallbackReference() == null) {
return null;
}
return FileUtil.matchFilesWithMediaStore(context, files);
} catch (Exception e) {
e.printStackTrace();
cancel(false);
return null;
}
}
@Override
protected void onPostExecute(List<Song> songs) {
super.onPostExecute(songs);
OnSongsListedCallback callback = checkCallbackReference();
if (songs != null && callback != null) {
callback.onSongsListed(songs, extra);
}
}
@Override
protected void onPreExecute() {
super.onPreExecute();
checkCallbackReference();
checkContextReference();
}
private OnSongsListedCallback checkCallbackReference() {
OnSongsListedCallback callback = callbackWeakReference.get();
if (callback == null) {
cancel(false);
}
return callback;
}
private Context checkContextReference() {
Context context = contextWeakReference.get();
if (context == null) {
cancel(false);
}
return context;
}
public interface OnSongsListedCallback {
void onSongsListed(@NonNull List<Song> songs, Object extra);
}
static class LoadingInfo {
final Comparator<File> fileComparator;
final FileFilter fileFilter;
final List<File> files;
LoadingInfo(
@NonNull List<File> files,
@NonNull FileFilter fileFilter,
@NonNull Comparator<File> fileComparator) {
this.fileComparator = fileComparator;
this.fileFilter = fileFilter;
this.files = files;
}
}
}
private abstract static class ListingFilesDialogAsyncTask<Params, Progress, Result>
extends DialogAsyncTask<Params, Progress, Result> {
ListingFilesDialogAsyncTask(Context context) {
super(context);
}
public ListingFilesDialogAsyncTask(Context context, int showDelay) {
super(context, showDelay);
}
@Override
protected Dialog createDialog(@NonNull Context context) {
return new MaterialAlertDialogBuilder(context)
.setTitle(R.string.listing_files)
.setCancelable(false)
.setView(R.layout.loading)
.setOnCancelListener(dialog -> cancel(false))
.setOnDismissListener(dialog -> cancel(false))
.create();
}
}
// https://github.com/DrKLO/Telegram/blob/ab221dafadbc17459d78d9ea3e643ae18e934b16/TMessagesProj/src/main/java/org/telegram/ui/Components/ChatAttachAlertDocumentLayout.java#L939
private void listRoots() {
storageItems.clear();
HashSet<String> paths = new HashSet<>();
String defaultPath = Environment.getExternalStorageDirectory().getPath();
String defaultPathState = Environment.getExternalStorageState();
if (defaultPathState.equals(Environment.MEDIA_MOUNTED) || defaultPathState.equals(Environment.MEDIA_MOUNTED_READ_ONLY)) {
Storage ext = new Storage();
if (Environment.isExternalStorageRemovable()) {
ext.title = "SD Card";
} else {
ext.title = "Internal Storage";
}
ext.file = Environment.getExternalStorageDirectory();
storageItems.add(ext);
paths.add(defaultPath);
}
BufferedReader bufferedReader = null;
try {
bufferedReader = new BufferedReader(new FileReader("/proc/mounts"));
String line;
while ((line = bufferedReader.readLine()) != null) {
if (line.contains("vfat") || line.contains("/mnt")) {
StringTokenizer tokens = new StringTokenizer(line, " ");
tokens.nextToken();
String path = tokens.nextToken();
if (paths.contains(path)) {
continue;
}
if (line.contains("/dev/block/vold")) {
if (!line.contains("/mnt/secure") && !line.contains("/mnt/asec") && !line.contains("/mnt/obb") && !line.contains("/dev/mapper") && !line.contains("tmpfs")) {
if (!new File(path).isDirectory()) {
int index = path.lastIndexOf('/');
if (index != -1) {
String newPath = "/storage/" + path.substring(index + 1);
if (new File(newPath).isDirectory()) {
path = newPath;
}
}
}
paths.add(path);
try {
Storage item = new Storage();
if (path.toLowerCase().contains("sd")) {
item.title = "SD Card";
} else {
item.title = "External Storage";
}
item.file = new File(path);
storageItems.add(item);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (bufferedReader != null) {
try {
bufferedReader.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
@Override
public void onStorageClicked(@NonNull Storage storage) {
switchToFileAdapter();
setCrumb(
new BreadCrumbLayout.Crumb(
FileUtil.safeGetCanonicalFile(storage.file)),
true);
}
public void switchToFileAdapter() {
adapter =
new SongFileAdapter(getMainActivity(), new LinkedList<>(), R.layout.item_list, this, this);
adapter.registerAdapterDataObserver(
new RecyclerView.AdapterDataObserver() {
@Override
public void onChanged() {
super.onChanged();
checkIsEmpty();
checkForPadding();
}
});
binding.recyclerView.setAdapter(adapter);
checkIsEmpty();
}
public void switchToStorageAdapter() {
listRoots();
storageAdapter = new StorageAdapter(storageItems, this);
binding.recyclerView.setAdapter(storageAdapter);
binding.breadCrumbs.clearCrumbs();
}
}