/*
This file is part of Subsonic.
Subsonic 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.
Subsonic 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.
You should have received a copy of the GNU General Public License
along with Subsonic. If not, see <http://www.gnu.org/licenses/>.
Copyright 2014 (C) Scott Jackson
*/
package github.daneren2005.dsub.fragments;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.preference.Preference;
import android.preference.PreferenceFragment;
import android.preference.PreferenceManager;
import android.preference.PreferenceScreen;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import github.daneren2005.dsub.R;
import github.daneren2005.dsub.util.Constants;
public abstract class PreferenceCompatFragment extends SubsonicFragment {
private static final String TAG = PreferenceCompatFragment.class.getSimpleName();
private static final int FIRST_REQUEST_CODE = 100;
private static final int MSG_BIND_PREFERENCES = 1;
private static final String PREFERENCES_TAG = "android:preferences";
private boolean mHavePrefs;
private boolean mInitDone;
private ListView mList;
private PreferenceManager mPreferenceManager;
private Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_BIND_PREFERENCES:
bindPreferences();
break;
}
}
};
final private Runnable mRequestFocus = new Runnable() {
public void run() {
mList.focusableViewAvailable(mList);
}
};
private void bindPreferences() {
PreferenceScreen localPreferenceScreen = getPreferenceScreen();
if (localPreferenceScreen != null) {
ListView localListView = getListView();
localPreferenceScreen.bind(localListView);
}
}
private void ensureList() {
if (mList == null) {
View view = getView();
if (view == null) {
throw new IllegalStateException("Content view not yet created");
}
View listView = view.findViewById(android.R.id.list);
if (!(listView instanceof ListView)) {
throw new RuntimeException("Content has view with id attribute 'android.R.id.list' that is not a ListView class");
}
mList = (ListView)listView;
if (mList == null) {
throw new RuntimeException("Your content must have a ListView whose id attribute is 'android.R.id.list'");
}
mHandler.post(mRequestFocus);
}
}
private void postBindPreferences() {
if (mHandler.hasMessages(MSG_BIND_PREFERENCES)) {
mHandler.obtainMessage(MSG_BIND_PREFERENCES).sendToTarget();
}
}
private void requirePreferenceManager() {
if (this.mPreferenceManager == null) {
throw new RuntimeException("This should be called after super.onCreate.");
}
}
public void addPreferencesFromIntent(Intent intent) {
requirePreferenceManager();
PreferenceScreen screen = inflateFromIntent(intent, getPreferenceScreen());
setPreferenceScreen(screen);
}
public PreferenceScreen addPreferencesFromResource(int resId) {
requirePreferenceManager();
PreferenceScreen screen = inflateFromResource(getActivity(), resId, getPreferenceScreen());
setPreferenceScreen(screen);
for(int i = 0; i < screen.getPreferenceCount(); i++) {
Preference preference = screen.getPreference(i);
if(preference instanceof PreferenceScreen && preference.getKey() != null) {
preference.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
@Override
public boolean onPreferenceClick(Preference preference) {
onStartNewFragment(preference.getKey());
return false;
}
});
}
}
return screen;
}
public Preference findPreference(CharSequence key) {
if (mPreferenceManager == null) {
return null;
}
return mPreferenceManager.findPreference(key);
}
public ListView getListView() {
ensureList();
return mList;
}
public PreferenceManager getPreferenceManager() {
return mPreferenceManager;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
getListView().setScrollBarStyle(View.SCROLLBAR_POSITION_DEFAULT);
if (mHavePrefs) {
bindPreferences();
}
mInitDone = true;
if (savedInstanceState != null) {
Bundle localBundle = savedInstanceState.getBundle(PREFERENCES_TAG);
if (localBundle != null) {
PreferenceScreen screen = getPreferenceScreen();
if (screen != null) {
screen.restoreHierarchyState(localBundle);
}
}
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
dispatchActivityResult(requestCode, resultCode, data);
}
@Override
public void onCreate(Bundle paramBundle) {
super.onCreate(paramBundle);
mPreferenceManager = createPreferenceManager();
int res = this.getArguments().getInt(Constants.INTENT_EXTRA_FRAGMENT_TYPE, 0);
if(res != 0) {
PreferenceScreen preferenceScreen = addPreferencesFromResource(res);
onInitPreferences(preferenceScreen);
}
}
@Override
public View onCreateView(LayoutInflater paramLayoutInflater, ViewGroup paramViewGroup, Bundle paramBundle) {
return paramLayoutInflater.inflate(R.layout.preferences, paramViewGroup, false);
}
@Override
public void onDestroy() {
super.onDestroy();
dispatchActivityDestroy();
}
@Override
public void onDestroyView() {
mList = null;
mHandler.removeCallbacks(mRequestFocus);
mHandler.removeMessages(MSG_BIND_PREFERENCES);
super.onDestroyView();
}
@Override
public void onSaveInstanceState(Bundle bundle) {
super.onSaveInstanceState(bundle);
PreferenceScreen screen = getPreferenceScreen();
if (screen != null) {
Bundle localBundle = new Bundle();
screen.saveHierarchyState(localBundle);
bundle.putBundle(PREFERENCES_TAG, localBundle);
}
}
@Override
public void onStop() {
super.onStop();
dispatchActivityStop();
}
/** Access methods with visibility private **/
private PreferenceManager createPreferenceManager() {
try {
Constructor<PreferenceManager> c = PreferenceManager.class.getDeclaredConstructor(Activity.class, int.class);
c.setAccessible(true);
return c.newInstance(this.getActivity(), FIRST_REQUEST_CODE);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private PreferenceScreen getPreferenceScreen() {
try {
Method m = PreferenceManager.class.getDeclaredMethod("getPreferenceScreen");
m.setAccessible(true);
return (PreferenceScreen) m.invoke(mPreferenceManager);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
protected void setPreferenceScreen(PreferenceScreen preferenceScreen) {
try {
Method m = PreferenceManager.class.getDeclaredMethod("setPreferences", PreferenceScreen.class);
m.setAccessible(true);
boolean result = (Boolean) m.invoke(mPreferenceManager, preferenceScreen);
if (result && preferenceScreen != null) {
mHavePrefs = true;
if (mInitDone) {
postBindPreferences();
}
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private void dispatchActivityResult(int requestCode, int resultCode, Intent data) {
try {
Method m = PreferenceManager.class.getDeclaredMethod("dispatchActivityResult", int.class, int.class, Intent.class);
m.setAccessible(true);
m.invoke(mPreferenceManager, requestCode, resultCode, data);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private void dispatchActivityDestroy() {
try {
Method m = PreferenceManager.class.getDeclaredMethod("dispatchActivityDestroy");
m.setAccessible(true);
m.invoke(mPreferenceManager);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private void dispatchActivityStop() {
try {
Method m = PreferenceManager.class.getDeclaredMethod("dispatchActivityStop");
m.setAccessible(true);
m.invoke(mPreferenceManager);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private void setFragment(PreferenceFragment preferenceFragment) {
try {
Method m = PreferenceManager.class.getDeclaredMethod("setFragment", PreferenceFragment.class);
m.setAccessible(true);
m.invoke(mPreferenceManager, preferenceFragment);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
public PreferenceScreen inflateFromResource(Context context, int resId, PreferenceScreen rootPreferences) {
PreferenceScreen preferenceScreen ;
try {
Method m = PreferenceManager.class.getDeclaredMethod("inflateFromResource", Context.class, int.class, PreferenceScreen.class);
m.setAccessible(true);
preferenceScreen = (PreferenceScreen) m.invoke(mPreferenceManager, context, resId, rootPreferences);
} catch (Exception e) {
throw new RuntimeException(e);
}
return preferenceScreen;
}
public PreferenceScreen inflateFromIntent(Intent queryIntent, PreferenceScreen rootPreferences) {
PreferenceScreen preferenceScreen ;
try {
Method m = PreferenceManager.class.getDeclaredMethod("inflateFromIntent", Intent.class, PreferenceScreen.class);
m.setAccessible(true);
preferenceScreen = (PreferenceScreen) m.invoke(mPreferenceManager, queryIntent, rootPreferences);
} catch (Exception e) {
throw new RuntimeException(e);
}
return preferenceScreen;
}
protected abstract void onInitPreferences(PreferenceScreen preferenceScreen);
protected abstract void onStartNewFragment(String name);
}