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package android.support.v4.preference;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.preference.Preference;
import android.preference.PreferenceManager;
import android.preference.PreferenceScreen;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;

public abstract class PreferenceFragment extends Fragment {
	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 Handler mHandler;
	private boolean mHavePrefs;
	private boolean mInitDone;
	private ListView mList;
	private PreferenceManager mPreferenceManager;
	private final Runnable mRequestFocus;

	public PreferenceFragment() {
	// PreferenceFragment.1 local1 = new PreferenceFragment.1(this);
	// this.mHandler = local1;
	// PreferenceFragment.2 local2 = new PreferenceFragment.2(this);
	// this.mRequestFocus = local2;
		mRequestFocus = null;
	}

	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 = mPreferenceManager.inflateFromIntent(intent, getPreferenceScreen());
		setPreferenceScreen(screen);
	}

	public void addPreferencesFromResource(int resId) {
		requirePreferenceManager();
		PreferenceScreen screen = mPreferenceManager.inflateFromResource(getActivity(), resId, getPreferenceScreen());
		setPreferenceScreen(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;
	}

	public PreferenceScreen getPreferenceScreen() {
		return mPreferenceManager.getPreferenceScreen();
	}

	public void onActivityCreated(Bundle savedInstanceState) {
		super.onActivityCreated(savedInstanceState);
		getListView().setScrollBarStyle(0);
		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);
				}
			}
		}
	}

	public void onActivityResult(int requestCode, int resultCode, Intent data) {
		super.onActivityResult(requestCode, resultCode, data);
		mPreferenceManager.dispatchActivityResult(requestCode, resultCode, data);
	}

	public void onCreate(Bundle paramBundle) {
		super.onCreate(paramBundle);
		mPreferenceManager = new PreferenceManager(getActivity(), FIRST_REQUEST_CODE);
		mPreferenceManager.setFragment(this);
		mPreferenceManager.setOnPreferenceTreeClickListener(this);
	}

	public View onCreateView(LayoutInflater paramLayoutInflater, ViewGroup paramViewGroup, Bundle paramBundle) {
		return paramLayoutInflater.inflate(17367145, paramViewGroup, 0);
	}

	public void onDestroy() {
		super.onDestroy();
		mPreferenceManager.dispatchActivityDestroy();
		mPreferenceManager.setOnPreferenceTreeClickListener(null);
	}

	public void onDestroyView() {
		mList = null;
		mHandler.removeCallbacks(mRequestFocus);
		mHandler.removeMessages(MSG_BIND_PREFERENCES);
		super.onDestroyView();
	}

	public boolean onPreferenceTreeClick(PreferenceScreen screen, Preference preference) {
		if ((preference.getFragment() != null) && ((getActivity() instanceof OnPreferenceStartFragmentCallback))) {
			return ((OnPreferenceStartFragmentCallback)getActivity()).onPreferenceStartFragment(this, preference);
		}
		return false;
	}

	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);
		}
	}

	public void onStop() {
		super.onStop();
		mPreferenceManager.dispatchActivityStop();
	}

	public void setPreferenceScreen(PreferenceScreen screen) {
		if ((mPreferenceManager.setPreferences(screen)) && (screen != null)) {
			mHavePrefs = true;
			if (mInitDone) {
				postBindPreferences();
			}
		}
	}

	public abstract interface OnPreferenceStartFragmentCallback {
		public abstract boolean onPreferenceStartFragment(PreferenceFragment paramPreferenceFragment, Preference paramPreference);
	}
}