/*
* 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.Context;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.graphics.Rect;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.ListFragment;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;
import org.getlantern.firetweet.Constants;
import org.getlantern.firetweet.activity.iface.IControlBarActivity;
import org.getlantern.firetweet.app.FiretweetApplication;
import org.getlantern.firetweet.fragment.iface.IBaseFragment;
import org.getlantern.firetweet.fragment.iface.RefreshScrollTopInterface;
import org.getlantern.firetweet.fragment.iface.SupportFragmentCallback;
import org.getlantern.firetweet.util.AsyncTwitterWrapper;
import org.getlantern.firetweet.util.ListScrollDistanceCalculator;
import org.getlantern.firetweet.util.ListScrollDistanceCalculator.ScrollDistanceListener;
import org.getlantern.firetweet.util.MultiSelectManager;
import org.getlantern.firetweet.util.ThemeUtils;
import org.getlantern.firetweet.util.Utils;
import org.getlantern.firetweet.view.ExtendedFrameLayout;
import org.getlantern.firetweet.view.iface.IExtendedView.TouchInterceptor;
import static android.support.v4.app.ListFragmentTrojan.INTERNAL_EMPTY_ID;
import static android.support.v4.app.ListFragmentTrojan.INTERNAL_LIST_CONTAINER_ID;
import static android.support.v4.app.ListFragmentTrojan.INTERNAL_PROGRESS_CONTAINER_ID;
public class BaseSupportListFragment extends ListFragment implements IBaseFragment, Constants, OnScrollListener,
RefreshScrollTopInterface, ScrollDistanceListener {
private ListScrollDistanceCalculator mListScrollCounter = new ListScrollDistanceCalculator();
private boolean mIsInstanceStateSaved;
private boolean mReachedBottom, mNotReachedBottomBefore;
private boolean mReachedTop, mNotReachedTopBefore;
private boolean mStoppedPreviously;
public final FiretweetApplication getApplication() {
return FiretweetApplication.getInstance(getActivity());
}
public final ContentResolver getContentResolver() {
final Activity activity = getActivity();
if (activity != null) return activity.getContentResolver();
return null;
}
@Override
public Bundle getExtraConfiguration() {
final Bundle args = getArguments();
final Bundle extras = new Bundle();
if (args != null && args.containsKey(EXTRA_EXTRAS)) {
extras.putAll(args.getBundle(EXTRA_EXTRAS));
}
return extras;
}
public final MultiSelectManager getMultiSelectManager() {
return getApplication() != null ? getApplication().getMultiSelectManager() : null;
}
public final SharedPreferences getSharedPreferences(final String name, final int mode) {
final Activity activity = getActivity();
if (activity != null) return activity.getSharedPreferences(name, mode);
return null;
}
public final Object getSystemService(final String name) {
final Activity activity = getActivity();
if (activity != null) return activity.getSystemService(name);
return null;
}
@Override
public final 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) {
}
protected void fitSystemWindows(Rect insets) {
Utils.makeListFragmentFitsSystemWindows(this, insets);
}
public AsyncTwitterWrapper getTwitterWrapper() {
return getApplication() != null ? getApplication().getTwitterWrapper() : null;
}
public void invalidateOptionsMenu() {
final Activity activity = getActivity();
if (activity == null) return;
activity.invalidateOptionsMenu();
}
public boolean isInstanceStateSaved() {
return mIsInstanceStateSaved;
}
public boolean isReachedBottom() {
return mReachedBottom;
}
@Override
public void onActivityCreated(final Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mNotReachedBottomBefore = true;
mStoppedPreviously = false;
mIsInstanceStateSaved = savedInstanceState != null;
mListScrollCounter.setScrollDistanceListener(this);
final ListView lv = getListView();
lv.setOnScrollListener(this);
}
@Override
public void onAttach(final Activity activity) {
super.onAttach(activity);
}
private final TouchInterceptor mInternalOnTouchListener = new TouchInterceptor() {
@Override
public boolean dispatchTouchEvent(View view, MotionEvent event) {
return false;
}
@Override
public boolean onInterceptTouchEvent(View view, MotionEvent event) {
switch (event.getActionMasked()) {
case MotionEvent.ACTION_DOWN: {
onListTouched();
break;
}
}
return false;
}
@Override
public boolean onTouchEvent(View view, MotionEvent event) {
return false;
}
};
protected void onListTouched() {
}
@Override
public final void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
onBaseViewCreated(view, savedInstanceState);
requestFitSystemWindows();
}
/**
* Provide default implementation to return a simple list view. Subclasses
* can override to replace with their own layout. If doing so, the returned
* view hierarchy <em>must</em> have a ListView whose id is
* {@link android.R.id#list android.R.id.list} and can optionally have a
* sibling view id {@link android.R.id#empty android.R.id.empty} that is to
* be shown when the list is empty.
* <p/>
* <p/>
* If you are overriding this method with your own custom content, consider
* including the standard layout {@link android.R.layout#list_content} in
* your layout file, so that you continue to retain all of the standard
* behavior of ListFragment. In particular, this is currently the only way
* to have the built-in indeterminant progress state be shown.
*/
@Override
public View onCreateView(final LayoutInflater inflater, final ViewGroup container, final Bundle savedInstanceState) {
final Context context = getActivity();
final FrameLayout root = new FrameLayout(context);
// ------------------------------------------------------------------
final LinearLayout pframe = new LinearLayout(context);
pframe.setId(INTERNAL_PROGRESS_CONTAINER_ID);
pframe.setOrientation(LinearLayout.VERTICAL);
pframe.setVisibility(View.GONE);
pframe.setGravity(Gravity.CENTER);
final ProgressBar progress = new ProgressBar(context, null, android.R.attr.progressBarStyleLarge);
pframe.addView(progress, new FrameLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
ViewGroup.LayoutParams.WRAP_CONTENT));
root.addView(pframe, new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT));
// ------------------------------------------------------------------
final ExtendedFrameLayout lframe = new ExtendedFrameLayout(context);
lframe.setId(INTERNAL_LIST_CONTAINER_ID);
lframe.setTouchInterceptor(mInternalOnTouchListener);
final TextView tv = new TextView(getActivity());
tv.setTextAppearance(context, ThemeUtils.getTextAppearanceLarge(context));
tv.setId(INTERNAL_EMPTY_ID);
tv.setGravity(Gravity.CENTER);
lframe.addView(tv, new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT));
final ListView lv = new ListView(getActivity());
lv.setId(android.R.id.list);
lv.setDrawSelectorOnTop(false);
lv.setOnScrollListener(this);
lframe.addView(lv, new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT));
root.addView(lframe, new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT));
// ------------------------------------------------------------------
root.setLayoutParams(new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT));
return root;
}
@Override
public void onDestroy() {
mStoppedPreviously = false;
super.onDestroy();
}
@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);
}
}
public void onPostStart() {
}
public void onRestart() {
}
@Override
public void onScroll(final AbsListView view, final int firstVisibleItem, final int visibleItemCount,
final int totalItemCount) {
mListScrollCounter.onScroll(view, firstVisibleItem, visibleItemCount, totalItemCount);
final ListAdapter adapter = getListAdapter();
if (adapter == null) return;
final boolean reachedTop = firstVisibleItem == 0;
final boolean reachedBottom = firstVisibleItem + visibleItemCount >= totalItemCount
&& totalItemCount >= visibleItemCount;
if (mReachedBottom != reachedBottom) {
mReachedBottom = reachedBottom;
if (mReachedBottom && mNotReachedBottomBefore) {
mNotReachedBottomBefore = false;
return;
}
if (mReachedBottom && adapter.getCount() > visibleItemCount) {
onReachedBottom();
}
}
if (mReachedTop != reachedTop) {
mReachedTop = reachedTop;
if (mReachedTop && mNotReachedTopBefore) {
mNotReachedTopBefore = false;
return;
}
if (mReachedTop && adapter.getCount() > visibleItemCount) {
onReachedTop();
}
}
}
@Override
public void onScrollStateChanged(final AbsListView view, final int scrollState) {
mListScrollCounter.onScrollStateChanged(view, scrollState);
}
@Override
public void onStart() {
super.onStart();
onPostStart();
if (mStoppedPreviously) {
onRestart();
}
mStoppedPreviously = false;
}
@Override
public void onStop() {
mStoppedPreviously = true;
super.onStop();
}
public void registerReceiver(final BroadcastReceiver receiver, final IntentFilter filter) {
final Activity activity = getActivity();
if (activity == null) return;
activity.registerReceiver(receiver, filter);
}
@Override
public boolean scrollToStart() {
final Activity activity = getActivity();
if (!isAdded() || activity == null) return false;
Utils.scrollListToTop(getListView());
if (activity instanceof IControlBarActivity) {
((IControlBarActivity) activity).setControlBarOffset(1);
}
return true;
}
public void setProgressBarIndeterminateVisibility(final boolean visible) {
final Activity activity = getActivity();
if (activity == null) return;
activity.setProgressBarIndeterminateVisibility(visible);
}
@Override
public void setSelection(final int position) {
if (getView() == null) return;
Utils.scrollListToPosition(getListView(), position);
}
@Override
public void setUserVisibleHint(final boolean isVisibleToUser) {
super.setUserVisibleHint(isVisibleToUser);
final Fragment fragment = getParentFragment();
if (fragment instanceof SupportFragmentCallback) {
((SupportFragmentCallback) fragment).onSetUserVisibleHint(this, isVisibleToUser);
}
final Activity activity = getActivity();
if (activity instanceof SupportFragmentCallback) {
((SupportFragmentCallback) activity).onSetUserVisibleHint(this, isVisibleToUser);
}
}
@Override
public boolean triggerRefresh() {
return false;
}
public void unregisterReceiver(final BroadcastReceiver receiver) {
final Activity activity = getActivity();
if (activity == null) return;
activity.unregisterReceiver(receiver);
}
protected void onReachedBottom() {
}
protected void onReachedTop() {
}
@Override
public void onScrollDistanceChanged(int delta, int total) {
// final FragmentActivity a = getActivity();
// if (a instanceof IControlBarActivity && getTabPosition() >= 0 && getUserVisibleHint()) {
// ((IControlBarActivity) a).moveControlBarBy(delta);
// }
}
}