TimeTable/app/src/main/java/com/ulan/timetable/adapters/ExamsAdapter.java at 40452768ce97cc4cbd046bc9b7ffea30904eb194 · ulan17/TimeTable · GitHub

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package com.ulan.timetable.adapters;

import android.app.Activity;
import android.support.annotation.NonNull;
import android.support.v7.widget.CardView;
import android.support.v7.widget.PopupMenu;
import android.util.SparseBooleanArray;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

import com.ulan.timetable.model.Exam;
import com.ulan.timetable.R;
import com.ulan.timetable.utils.AlertDialogsHelper;
import com.ulan.timetable.utils.DbHelper;

import java.util.ArrayList;
import java.util.Objects;

/**
 * Created by Ulan on 17.12.2018.
 */
public class ExamsAdapter extends ArrayAdapter<Exam> {

    private Activity mActivity;
    private int mResource;
    private ArrayList<Exam> examlist;
    private Exam exam;
    private ListView mListView;

    private static class ViewHolder {
        TextView subject;
        TextView teacher;
        TextView room;
        TextView date;
        TextView time;
        CardView cardView;
        ImageView popup;
    }

    public ExamsAdapter(Activity activity, ListView listView, int resource, ArrayList<Exam> objects) {
        super(activity, resource, objects);
        mActivity = activity;
        mListView = listView;
        mResource = resource;
        examlist = objects;
    }

    @NonNull
    @Override
    public View getView(final int position, View convertView, @NonNull ViewGroup parent) {
        String subject = Objects.requireNonNull(getItem(position)).getSubject();
        String teacher = Objects.requireNonNull(getItem(position)).getTeacher();
        String room = Objects.requireNonNull(getItem(position)).getRoom();
        String date = Objects.requireNonNull(getItem(position)).getDate();
        String time = Objects.requireNonNull(getItem(position)).getTime();
        int color = Objects.requireNonNull(getItem(position)).getColor();

        exam = new Exam(subject, teacher, date, time, room, color);
        final ViewHolder holder;

        if (convertView == null) {
            LayoutInflater inflater = LayoutInflater.from(mActivity);
            convertView = inflater.inflate(mResource, parent, false);
            holder = new ViewHolder();
            holder.subject = convertView.findViewById(R.id.subjectexams);
            holder.teacher = convertView.findViewById(R.id.teacherexams);
            holder.room = convertView.findViewById(R.id.roomexams);
            holder.date = convertView.findViewById(R.id.dateexams);
            holder.time = convertView.findViewById(R.id.timeexams);
            holder.cardView = convertView.findViewById(R.id.exams_cardview);
            holder.popup = convertView.findViewById(R.id.popupbtn);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        holder.subject.setText(exam.getSubject());
        holder.teacher.setText(exam.getTeacher());
        holder.room.setText(exam.getRoom());
        holder.date.setText(exam.getDate());
        holder.time.setText(exam.getTime());
        holder.cardView.setCardBackgroundColor(exam.getColor());
        holder.popup.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                final PopupMenu popup = new PopupMenu(mActivity, holder.popup);
                final DbHelper db = new DbHelper(mActivity);
                popup.getMenuInflater().inflate(R.menu.popup_menu, popup.getMenu());
                popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
                    public boolean onMenuItemClick(MenuItem item) {
                        switch (item.getItemId()) {
                            case R.id.delete_popup:
                                db.deleteExamById(getItem(position));
                                db.updateExam(getItem(position));
                                examlist.remove(position);
                                notifyDataSetChanged();
                                return true;

                            case R.id.edit_popup:
                                final View alertLayout = mActivity.getLayoutInflater().inflate(R.layout.dialog_add_exam, null);
                                AlertDialogsHelper.getEditExamDialog(mActivity, alertLayout, examlist, mListView, position);
                                notifyDataSetChanged();
                                return true;
                            default:
                                return onMenuItemClick(item);
                        }
                    }
                });
                popup.show();
            }
        });

        hidePopUpMenu(holder);

        return convertView;
    }

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

    public ArrayList<Exam> getExamList() {
        return examlist;
    }

    public Exam getExam() {
        return exam;
    }

    private void hidePopUpMenu(ViewHolder holder) {
        SparseBooleanArray checkedItems = mListView.getCheckedItemPositions();
        if (checkedItems.size() > 0) {
            for (int i = 0; i < checkedItems.size(); i++) {
                int key = checkedItems.keyAt(i);
                if (checkedItems.get(key)) {
                    holder.popup.setVisibility(View.INVISIBLE);
                }
            }
        } else {
            holder.popup.setVisibility(View.VISIBLE);
        }
    }
}