2018-04-21 23:10:01 +02:00
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package org.schabi.newpipe.local;
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2018-01-28 07:14:38 +01:00
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2018-08-31 13:34:32 +02:00
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import android.content.SharedPreferences;
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import android.content.res.Configuration;
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import android.content.res.Resources;
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2018-01-28 07:14:38 +01:00
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import android.os.Bundle;
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2018-08-31 13:34:32 +02:00
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import android.preference.PreferenceManager;
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2018-01-31 01:01:11 +01:00
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import android.support.v4.app.Fragment;
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2018-01-28 07:14:38 +01:00
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import android.support.v7.app.ActionBar;
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2018-08-31 13:34:32 +02:00
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import android.support.v7.widget.GridLayoutManager;
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2018-01-28 07:14:38 +01:00
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import android.support.v7.widget.LinearLayoutManager;
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import android.support.v7.widget.RecyclerView;
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import android.util.Log;
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import android.view.Menu;
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import android.view.MenuInflater;
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import android.view.View;
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import org.schabi.newpipe.R;
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import org.schabi.newpipe.fragments.BaseStateFragment;
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import org.schabi.newpipe.fragments.list.ListViewContract;
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import static org.schabi.newpipe.util.AnimationUtils.animateView;
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2018-01-31 01:01:11 +01:00
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/**
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* This fragment is design to be used with persistent data such as
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* {@link org.schabi.newpipe.database.LocalItem}, and does not cache the data contained
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* in the list adapter to avoid extra writes when the it exits or re-enters its lifecycle.
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*
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* This fragment destroys its adapter and views when {@link Fragment#onDestroyView()} is
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* called and is memory efficient when in backstack.
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* */
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2018-01-28 07:14:38 +01:00
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public abstract class BaseLocalListFragment<I, N> extends BaseStateFragment<I>
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implements ListViewContract<I, N>, SharedPreferences.OnSharedPreferenceChangeListener {
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2018-01-28 07:14:38 +01:00
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/*//////////////////////////////////////////////////////////////////////////
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// Views
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//////////////////////////////////////////////////////////////////////////*/
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2018-01-31 01:01:11 +01:00
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protected View headerRootView;
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protected View footerRootView;
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2018-01-28 07:14:38 +01:00
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protected LocalItemListAdapter itemListAdapter;
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protected RecyclerView itemsList;
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2018-08-31 13:34:32 +02:00
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private int updateFlags = 0;
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private static final int LIST_MODE_UPDATE_FLAG = 0x32;
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/*//////////////////////////////////////////////////////////////////////////
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// Lifecycle - Creation
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//////////////////////////////////////////////////////////////////////////*/
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setHasOptionsMenu(true);
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PreferenceManager.getDefaultSharedPreferences(activity)
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.registerOnSharedPreferenceChangeListener(this);
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}
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@Override
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public void onDestroy() {
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super.onDestroy();
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PreferenceManager.getDefaultSharedPreferences(activity)
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.unregisterOnSharedPreferenceChangeListener(this);
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}
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@Override
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public void onResume() {
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super.onResume();
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if (updateFlags != 0) {
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if ((updateFlags & LIST_MODE_UPDATE_FLAG) != 0) {
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final boolean useGrid = isGridLayout();
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itemsList.setLayoutManager(useGrid ? getGridLayoutManager() : getListLayoutManager());
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itemListAdapter.setGridItemVariants(useGrid);
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itemListAdapter.notifyDataSetChanged();
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}
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updateFlags = 0;
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}
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}
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/*//////////////////////////////////////////////////////////////////////////
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// Lifecycle - View
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//////////////////////////////////////////////////////////////////////////*/
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protected View getListHeader() {
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return null;
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}
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protected View getListFooter() {
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return activity.getLayoutInflater().inflate(R.layout.pignate_footer, itemsList, false);
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}
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protected RecyclerView.LayoutManager getGridLayoutManager() {
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final Resources resources = activity.getResources();
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int width = resources.getDimensionPixelSize(R.dimen.video_item_grid_thumbnail_image_width);
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width += (24 * resources.getDisplayMetrics().density);
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final int spanCount = (int) Math.floor(resources.getDisplayMetrics().widthPixels / (double)width);
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final GridLayoutManager lm = new GridLayoutManager(activity, spanCount);
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lm.setSpanSizeLookup(itemListAdapter.getSpanSizeLookup(spanCount));
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return lm;
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}
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2018-01-28 07:14:38 +01:00
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protected RecyclerView.LayoutManager getListLayoutManager() {
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return new LinearLayoutManager(activity);
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}
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@Override
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protected void initViews(View rootView, Bundle savedInstanceState) {
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super.initViews(rootView, savedInstanceState);
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2018-08-31 13:34:32 +02:00
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itemListAdapter = new LocalItemListAdapter(activity);
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final boolean useGrid = isGridLayout();
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itemsList = rootView.findViewById(R.id.items_list);
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itemsList.setLayoutManager(useGrid ? getGridLayoutManager() : getListLayoutManager());
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itemListAdapter.setGridItemVariants(useGrid);
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itemListAdapter.setHeader(headerRootView = getListHeader());
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itemListAdapter.setFooter(footerRootView = getListFooter());
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2018-01-28 07:14:38 +01:00
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itemsList.setAdapter(itemListAdapter);
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}
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@Override
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protected void initListeners() {
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super.initListeners();
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}
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/*//////////////////////////////////////////////////////////////////////////
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// Lifecycle - Menu
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//////////////////////////////////////////////////////////////////////////*/
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@Override
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public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
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super.onCreateOptionsMenu(menu, inflater);
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if (DEBUG) Log.d(TAG, "onCreateOptionsMenu() called with: menu = [" + menu +
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"], inflater = [" + inflater + "]");
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2018-02-08 19:13:29 +01:00
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final ActionBar supportActionBar = activity.getSupportActionBar();
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if (supportActionBar == null) return;
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supportActionBar.setDisplayShowTitleEnabled(true);
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2018-01-28 07:14:38 +01:00
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}
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2018-01-31 01:01:11 +01:00
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/*//////////////////////////////////////////////////////////////////////////
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// Lifecycle - Destruction
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//////////////////////////////////////////////////////////////////////////*/
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@Override
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public void onDestroyView() {
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super.onDestroyView();
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itemsList = null;
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itemListAdapter = null;
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}
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2018-01-28 07:14:38 +01:00
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/*//////////////////////////////////////////////////////////////////////////
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// Contract
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//////////////////////////////////////////////////////////////////////////*/
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2018-01-31 01:01:11 +01:00
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@Override
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public void startLoading(boolean forceLoad) {
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super.startLoading(forceLoad);
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resetFragment();
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}
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2018-01-28 07:14:38 +01:00
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@Override
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public void showLoading() {
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super.showLoading();
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2018-01-31 20:51:47 +01:00
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if (itemsList != null) animateView(itemsList, false, 200);
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2018-01-31 01:01:11 +01:00
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if (headerRootView != null) animateView(headerRootView, false, 200);
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2018-01-28 07:14:38 +01:00
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}
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@Override
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public void hideLoading() {
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super.hideLoading();
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2018-01-31 20:51:47 +01:00
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if (itemsList != null) animateView(itemsList, true, 200);
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2018-01-31 01:01:11 +01:00
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if (headerRootView != null) animateView(headerRootView, true, 200);
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2018-01-28 07:14:38 +01:00
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}
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@Override
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public void showError(String message, boolean showRetryButton) {
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super.showError(message, showRetryButton);
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showListFooter(false);
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2018-01-31 01:01:11 +01:00
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2018-01-31 20:51:47 +01:00
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if (itemsList != null) animateView(itemsList, false, 200);
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2018-01-31 01:01:11 +01:00
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if (headerRootView != null) animateView(headerRootView, false, 200);
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2018-01-28 07:14:38 +01:00
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}
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@Override
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public void showEmptyState() {
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super.showEmptyState();
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showListFooter(false);
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}
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@Override
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public void showListFooter(final boolean show) {
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if (itemsList == null) return;
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itemsList.post(() -> {
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if (itemListAdapter != null) itemListAdapter.showFooter(show);
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});
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2018-01-28 07:14:38 +01:00
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}
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@Override
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public void handleNextItems(N result) {
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isLoading.set(false);
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}
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2018-01-31 01:01:11 +01:00
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/*//////////////////////////////////////////////////////////////////////////
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// Error handling
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//////////////////////////////////////////////////////////////////////////*/
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protected void resetFragment() {
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if (itemListAdapter != null) itemListAdapter.clearStreamItemList();
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}
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@Override
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protected boolean onError(Throwable exception) {
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resetFragment();
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return super.onError(exception);
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}
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2018-08-31 13:34:32 +02:00
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@Override
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public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
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if (key.equals(getString(R.string.list_view_mode_key))) {
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updateFlags |= LIST_MODE_UPDATE_FLAG;
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}
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}
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protected boolean isGridLayout() {
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final String list_mode = PreferenceManager.getDefaultSharedPreferences(activity).getString(getString(R.string.list_view_mode_key), getString(R.string.list_view_mode_value));
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if ("auto".equals(list_mode)) {
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final Configuration configuration = getResources().getConfiguration();
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return configuration.orientation == Configuration.ORIENTATION_LANDSCAPE
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&& configuration.isLayoutSizeAtLeast(Configuration.SCREENLAYOUT_SIZE_LARGE);
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} else {
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return "grid".equals(list_mode);
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}
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}
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2018-01-28 07:14:38 +01:00
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}
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