BaseSupportFragment.java

/*
 * 				Firetweet - Twitter client for Android
 * 
 *  Copyright (C) 2012-2014 Mariotaku Lee <mariotaku.lee@gmail.com>
 * 
 *  This program 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 program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.getlantern.firetweet.fragment.support;

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.graphics.Rect;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.view.View;

import org.getlantern.firetweet.Constants;
import org.getlantern.firetweet.activity.support.BaseActionBarActivity;
import org.getlantern.firetweet.app.FiretweetApplication;
import org.getlantern.firetweet.fragment.iface.IBaseFragment;
import org.getlantern.firetweet.fragment.iface.SupportFragmentCallback;
import org.getlantern.firetweet.util.AsyncTwitterWrapper;
import org.getlantern.firetweet.util.MultiSelectManager;
import org.getlantern.firetweet.util.ReadStateManager;

public class BaseSupportFragment extends Fragment implements IBaseFragment, Constants {

    @Override
    public final void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        onBaseViewCreated(view, savedInstanceState);
        requestFitSystemWindows();
    }

    public BaseSupportFragment() {

    }

    public FiretweetApplication getApplication() {
        final Activity activity = getActivity();
        if (activity != null) return (FiretweetApplication) activity.getApplication();
        return null;
    }

    public ContentResolver getContentResolver() {
        final Activity activity = getActivity();
        if (activity != null) return activity.getContentResolver();
        return null;
    }

    public MultiSelectManager getMultiSelectManager() {
        return getApplication() != null ? getApplication().getMultiSelectManager() : null;
    }

    public SharedPreferences getSharedPreferences(final String name, final int mode) {
        final Activity activity = getActivity();
        if (activity != null) return activity.getSharedPreferences(name, mode);
        return null;
    }

    public Object getSystemService(final String name) {
        final Activity activity = getActivity();
        if (activity != null) return activity.getSystemService(name);
        return null;
    }

    public AsyncTwitterWrapper getTwitterWrapper() {
        return getApplication() != null ? getApplication().getTwitterWrapper() : null;
    }

    public ReadStateManager getReadStateManager() {
        return getApplication() != null ? getApplication().getReadStateManager() : null;
    }

    public void invalidateOptionsMenu() {
        final FragmentActivity activity = getActivity();
        if (activity == null) return;
        activity.supportInvalidateOptionsMenu();
    }

    public void registerReceiver(final BroadcastReceiver receiver, final IntentFilter filter) {
        final Activity activity = getActivity();
        if (activity == null) return;
        activity.registerReceiver(receiver, filter);
    }

    public void setProgressBarIndeterminateVisibility(final boolean visible) {
        final Activity activity = getActivity();
        if (activity instanceof BaseActionBarActivity) {
            ((BaseActionBarActivity) activity).setProgressBarIndeterminateVisibility(visible);
        }
    }

    public void unregisterReceiver(final BroadcastReceiver receiver) {
        final Activity activity = getActivity();
        if (activity == null) return;
        activity.unregisterReceiver(receiver);
    }

    @Override
    public Bundle getExtraConfiguration() {
        return null;
    }

    @Override
    public int getTabPosition() {
        final Bundle args = getArguments();
        return args != null ? args.getInt(EXTRA_TAB_POSITION, -1) : -1;
    }

    @Override
    public void requestFitSystemWindows() {
        final Activity activity = getActivity();
        final Fragment parentFragment = getParentFragment();
        final SystemWindowsInsetsCallback callback;
        if (parentFragment instanceof SystemWindowsInsetsCallback) {
            callback = (SystemWindowsInsetsCallback) parentFragment;
        } else if (activity instanceof SystemWindowsInsetsCallback) {
            callback = (SystemWindowsInsetsCallback) activity;
        } else {
            return;
        }
        final Rect insets = new Rect();
        if (callback.getSystemWindowsInsets(insets)) {
            fitSystemWindows(insets);
        }
    }

    @Override
    public void onBaseViewCreated(View view, Bundle savedInstanceState) {

    }

    @Override
    public void onDetach() {
        super.onDetach();
        final Fragment fragment = getParentFragment();
        if (fragment instanceof SupportFragmentCallback) {
            ((SupportFragmentCallback) fragment).onDetachFragment(this);
        }
        final Activity activity = getActivity();
        if (activity instanceof SupportFragmentCallback) {
            ((SupportFragmentCallback) activity).onDetachFragment(this);
        }
    }

    @Override
    public void setUserVisibleHint(final boolean isVisibleToUser) {
        super.setUserVisibleHint(isVisibleToUser);
        final Activity activity = getActivity();
        final Fragment fragment = getParentFragment();
        if (fragment instanceof SupportFragmentCallback) {
            ((SupportFragmentCallback) fragment).onSetUserVisibleHint(this, isVisibleToUser);
        }
        if (activity instanceof SupportFragmentCallback) {
            ((SupportFragmentCallback) activity).onSetUserVisibleHint(this, isVisibleToUser);
        }
    }

    protected void fitSystemWindows(Rect insets) {
    }

}