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package de.danoeh.antennapod.fragment;
import android.app.Activity;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import de.danoeh.antennapod.R;
import de.danoeh.antennapod.core.util.playback.PlaybackController;
import de.danoeh.antennapod.core.util.playback.Timeline;
import de.danoeh.antennapod.view.ShownotesWebView;
import io.reactivex.Maybe;
import io.reactivex.android.schedulers.AndroidSchedulers;
import io.reactivex.disposables.Disposable;
import io.reactivex.schedulers.Schedulers;
/**
* Displays the description of a Playable object in a Webview.
*/
public class ItemDescriptionFragment extends Fragment {
private static final String TAG = "ItemDescriptionFragment";
private static final String PREF = "ItemDescriptionFragmentPrefs";
private static final String PREF_SCROLL_Y = "prefScrollY";
private static final String PREF_PLAYABLE_ID = "prefPlayableId";
private ShownotesWebView webvDescription;
private Disposable webViewLoader;
private PlaybackController controller;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
Log.d(TAG, "Creating view");
View root = inflater.inflate(R.layout.item_description_fragment, container, false);
webvDescription = root.findViewById(R.id.webview);
webvDescription.setTimecodeSelectedListener(time -> {
if (controller != null) {
controller.seekTo(time);
}
});
webvDescription.setPageFinishedListener(() -> {
// Restoring the scroll position might not always work
webvDescription.postDelayed(ItemDescriptionFragment.this::restoreFromPreference, 50);
});
registerForContextMenu(webvDescription);
return root;
}
@Override
public void onDestroy() {
super.onDestroy();
Log.d(TAG, "Fragment destroyed");
if (webViewLoader != null) {
webViewLoader.dispose();
}
if (webvDescription != null) {
webvDescription.removeAllViews();
webvDescription.destroy();
}
}
@Override
public boolean onContextItemSelected(MenuItem item) {
return webvDescription.onContextItemSelected(item);
}
private void load() {
Log.d(TAG, "load()");
if (webViewLoader != null) {
webViewLoader.dispose();
}
webViewLoader = Maybe.fromCallable(this::loadData)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(data -> {
webvDescription.loadDataWithBaseURL("https://127.0.0.1", data, "text/html",
"utf-8", "about:blank");
Log.d(TAG, "Webview loaded");
}, error -> Log.e(TAG, Log.getStackTraceString(error)));
}
@Nullable
private String loadData() {
if (controller.getMedia() == null) {
return null;
}
Timeline timeline = new Timeline(getActivity(), controller.getMedia());
return timeline.processShownotes();
}
@Override
public void onPause() {
super.onPause();
savePreference();
}
private void savePreference() {
Log.d(TAG, "Saving preferences");
SharedPreferences prefs = getActivity().getSharedPreferences(PREF, Activity.MODE_PRIVATE);
SharedPreferences.Editor editor = prefs.edit();
if (controller != null && controller.getMedia() != null && webvDescription != null) {
Log.d(TAG, "Saving scroll position: " + webvDescription.getScrollY());
editor.putInt(PREF_SCROLL_Y, webvDescription.getScrollY());
editor.putString(PREF_PLAYABLE_ID, controller.getMedia().getIdentifier()
.toString());
} else {
Log.d(TAG, "savePreferences was called while media or webview was null");
editor.putInt(PREF_SCROLL_Y, -1);
editor.putString(PREF_PLAYABLE_ID, "");
}
editor.apply();
}
private boolean restoreFromPreference() {
Log.d(TAG, "Restoring from preferences");
Activity activity = getActivity();
if (activity != null) {
SharedPreferences prefs = activity.getSharedPreferences(PREF, Activity.MODE_PRIVATE);
String id = prefs.getString(PREF_PLAYABLE_ID, "");
int scrollY = prefs.getInt(PREF_SCROLL_Y, -1);
if (controller != null && scrollY != -1 && controller.getMedia() != null
&& id.equals(controller.getMedia().getIdentifier().toString())
&& webvDescription != null) {
Log.d(TAG, "Restored scroll Position: " + scrollY);
webvDescription.scrollTo(webvDescription.getScrollX(),
scrollY);
return true;
}
}
return false;
}
@Override
public void onStart() {
super.onStart();
controller = new PlaybackController(getActivity()) {
@Override
public boolean loadMediaInfo() {
load();
return true;
}
@Override
public void setupGUI() {
ItemDescriptionFragment.this.load();
}
};
controller.init();
load();
}
@Override
public void onStop() {
super.onStop();
controller.release();
controller = null;
}
}
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