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package de.danoeh.antennapod.fragment;
import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.widget.Toolbar;
import androidx.fragment.app.Fragment;
import androidx.viewpager2.adapter.FragmentStateAdapter;
import androidx.viewpager2.widget.ViewPager2;
import com.google.android.material.tabs.TabLayout;
import com.google.android.material.tabs.TabLayoutMediator;
import de.danoeh.antennapod.R;
import de.danoeh.antennapod.activity.MainActivity;
/**
* Shows the CompletedDownloadsFragment and the RunningDownloadsFragment.
*/
public class DownloadsFragment extends PagedToolbarFragment {
public static final String TAG = "DownloadsFragment";
public static final String ARG_SELECTED_TAB = "selected_tab";
private static final String PREF_LAST_TAB_POSITION = "tab_position";
private static final String KEY_UP_ARROW = "up_arrow";
public static final int POS_RUNNING = 0;
private static final int POS_COMPLETED = 1;
public static final int POS_LOG = 2;
private static final int TOTAL_COUNT = 3;
private ViewPager2 viewPager;
private TabLayout tabLayout;
private boolean displayUpArrow;
@Override
public View onCreateView(@NonNull LayoutInflater inflater,
@Nullable ViewGroup container,
@Nullable Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
View root = inflater.inflate(R.layout.pager_fragment, container, false);
Toolbar toolbar = root.findViewById(R.id.toolbar);
toolbar.setTitle(R.string.downloads_label);
toolbar.inflateMenu(R.menu.downloads);
displayUpArrow = getParentFragmentManager().getBackStackEntryCount() != 0;
if (savedInstanceState != null) {
displayUpArrow = savedInstanceState.getBoolean(KEY_UP_ARROW);
}
((MainActivity) getActivity()).setupToolbarToggle(toolbar, displayUpArrow);
viewPager = root.findViewById(R.id.viewpager);
viewPager.setAdapter(new DownloadsPagerAdapter(this));
viewPager.setOffscreenPageLimit(2);
super.setupPagedToolbar(toolbar, viewPager);
// Give the TabLayout the ViewPager
tabLayout = root.findViewById(R.id.sliding_tabs);
new TabLayoutMediator(tabLayout, viewPager, (tab, position) -> {
switch (position) {
case POS_RUNNING:
tab.setText(R.string.downloads_running_label);
break;
case POS_COMPLETED:
tab.setText(R.string.downloads_completed_label);
break;
case POS_LOG:
tab.setText(R.string.downloads_log_label);
break;
default:
break;
}
}).attach();
// restore our last position
SharedPreferences prefs = getActivity().getSharedPreferences(TAG, Context.MODE_PRIVATE);
int lastPosition = prefs.getInt(PREF_LAST_TAB_POSITION, 0);
viewPager.setCurrentItem(lastPosition, false);
return root;
}
@Override
public void onSaveInstanceState(@NonNull Bundle outState) {
outState.putBoolean(KEY_UP_ARROW, displayUpArrow);
super.onSaveInstanceState(outState);
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
if (getArguments() != null) {
int tab = getArguments().getInt(ARG_SELECTED_TAB);
viewPager.setCurrentItem(tab, false);
}
}
@Override
public void onPause() {
super.onPause();
// save our tab selection
SharedPreferences prefs = getActivity().getSharedPreferences(TAG, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = prefs.edit();
editor.putInt(PREF_LAST_TAB_POSITION, tabLayout.getSelectedTabPosition());
editor.apply();
}
public static class DownloadsPagerAdapter extends FragmentStateAdapter {
DownloadsPagerAdapter(@NonNull Fragment fragment) {
super(fragment);
}
@NonNull
@Override
public Fragment createFragment(int position) {
switch (position) {
case POS_RUNNING:
return new RunningDownloadsFragment();
case POS_COMPLETED:
return new CompletedDownloadsFragment();
default:
case POS_LOG:
return new DownloadLogFragment();
}
}
@Override
public int getItemCount() {
return TOTAL_COUNT;
}
}
}
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