fedilab-Android-App/app/src/main/java/fr/gouv/etalab/mastodon/drawers/AccountsSearchAdapter.java

package fr.gouv.etalab.mastodon.drawers;
/* Copyright 2017 Thomas Schneider
 *
 * This file is a part of Mastalab
 *
 * 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.
 *
 * Mastalab 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 Thomas Schneider; if not,
 * see <http://www.gnu.org/licenses>. */


import android.content.Context;
import android.content.Intent;
import android.support.annotation.NonNull;
import android.support.v4.content.LocalBroadcastManager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Filter;
import android.widget.Filterable;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.display.SimpleBitmapDisplayer;

import java.util.ArrayList;
import java.util.List;
import fr.gouv.etalab.mastodon.client.Entities.Account;
import fr.gouv.etalab.mastodon.helper.Helper;
import mastodon.etalab.gouv.fr.mastodon.R;


/**
 * Created by Thomas on 05/05/2017.
 * Adapter for accounts when searching
 */
public class AccountsSearchAdapter extends ArrayAdapter<Account> implements Filterable {

    private List<Account> accounts, tempAccounts, suggestions ;
    private LayoutInflater layoutInflater;
    private ImageLoader imageLoader;
    private DisplayImageOptions options;
    private Context context;

    public AccountsSearchAdapter(Context context, List<Account> accounts){
        super(context, android.R.layout.simple_list_item_1, accounts);
        this.accounts = accounts;
        this.tempAccounts = new ArrayList<>(accounts);
        this.suggestions = new ArrayList<>(accounts);
        layoutInflater = LayoutInflater.from(context);
        imageLoader = ImageLoader.getInstance();
        this.context = context;
        options = new DisplayImageOptions.Builder().displayer(new SimpleBitmapDisplayer()).cacheInMemory(false)
                .cacheOnDisk(true).resetViewBeforeLoading(true).build();
    }

    @Override
    public int getCount() {
        return accounts.size();
    }

    @Override
    public Account getItem(int position) {
        return accounts.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }


    @NonNull
    @Override
    public View getView(final int position, View convertView, @NonNull ViewGroup parent) {

        final Account account = accounts.get(position);
        final ViewHolder holder;
        if (convertView == null) {
            convertView = layoutInflater.inflate(R.layout.drawer_account_search, parent, false);
            holder = new ViewHolder();
            holder.account_pp = (ImageView) convertView.findViewById(R.id.account_pp);
            holder.account_dn = (TextView) convertView.findViewById(R.id.account_dn);
            holder.account_un = (TextView) convertView.findViewById(R.id.account_un);

            holder.account_container = (LinearLayout) convertView.findViewById(R.id.account_container);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        holder.account_dn.setText(Helper.shortnameToUnicode(account.getDisplay_name(), true));
        holder.account_un.setText(String.format("@%s",account.getUsername()));
        //Profile picture
        imageLoader.displayImage(account.getAvatar(), holder.account_pp, options);

        holder.account_container.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(Helper.SEARCH_VALIDATE_ACCOUNT);
                intent.putExtra("acct", account.getAcct());
                LocalBroadcastManager.getInstance(context).sendBroadcast(intent);
            }
        });
        return convertView;
    }

    @NonNull
    @Override
    public Filter getFilter() {
        return accountFilter;
    }


    private Filter accountFilter = new Filter() {
        @Override
        public CharSequence convertResultToString(Object resultValue) {
            Account account = (Account) resultValue;
            return account.getDisplay_name() + " " + account.getUsername();
        }

        @Override
        protected FilterResults performFiltering(CharSequence constraint) {
            if (constraint != null) {
                suggestions.clear();
                for (Account account : tempAccounts) {
                    suggestions.add(account);
                }
                FilterResults filterResults = new FilterResults();
                filterResults.values = suggestions;
                filterResults.count = suggestions.size();
                return filterResults;
            } else {
                return new FilterResults();
            }
        }

        @Override
        protected void publishResults(CharSequence constraint, FilterResults results) {
            ArrayList<Account> c = (ArrayList<Account>) results.values;
            if (results.count > 0) {
                clear();
                for (Account cust : c) {
                    add(cust);
                    notifyDataSetChanged();
                }
            }
            else{
                clear();
                notifyDataSetChanged();
            }
        }
    };

    private class ViewHolder {
        ImageView account_pp;
        TextView account_dn;
        TextView account_un;
        LinearLayout account_container;
    }


}