ConverterFragment.java

package com.byagowi.persiancalendar.view.fragment;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.RelativeLayout;
import android.widget.Spinner;
import android.widget.TextView;

import com.byagowi.persiancalendar.Constants;
import com.byagowi.persiancalendar.R;
import com.byagowi.persiancalendar.adapter.ShapedArrayAdapter;
import com.byagowi.persiancalendar.util.Utils;

import java.util.ArrayList;
import java.util.List;

import calendar.CivilDate;
import calendar.DateConverter;
import calendar.IslamicDate;
import calendar.PersianDate;

/**
 * Program activity for android
 *
 * @author ebraminio
 */
public class ConverterFragment extends Fragment implements
        AdapterView.OnItemSelectedListener, View.OnClickListener {
    private Utils utils;
    private Spinner calendarTypeSpinner;
    private Spinner yearSpinner;
    private Spinner monthSpinner;
    private Spinner daySpinner;
    private int startingYearOnYearSpinner = 0;
    private TextView date0;
    private TextView date1;
    private TextView date2;
    private RelativeLayout moreDate;

    @Override
    public View onCreateView(LayoutInflater inflater,
                             @Nullable ViewGroup container,
                             @Nullable Bundle savedInstanceState) {

        View view = inflater.inflate(R.layout.fragment_converter, container, false);
        utils = Utils.getInstance(getContext());
        utils.setActivityTitleAndSubtitle(getActivity(), getString(R.string.date_converter), "");

        // fill members
        calendarTypeSpinner = (Spinner) view.findViewById(R.id.calendarTypeSpinner);
        yearSpinner = (Spinner) view.findViewById(R.id.yearSpinner);
        monthSpinner = (Spinner) view.findViewById(R.id.monthSpinner);
        daySpinner = (Spinner) view.findViewById(R.id.daySpinner);

        date0 = (TextView) view.findViewById(R.id.date0);
        date1 = (TextView) view.findViewById(R.id.date1);
        date2 = (TextView) view.findViewById(R.id.date2);

        date0.setOnClickListener(this);
        date1.setOnClickListener(this);
        date2.setOnClickListener(this);

        moreDate = (RelativeLayout) view.findViewById(R.id.more_date);

        // Shape and set font
        utils.setFontAndShape((TextView) view.findViewById(R.id.converterLabelDay));
        utils.setFontAndShape((TextView) view.findViewById(R.id.converterLabelMonth));
        utils.setFontAndShape((TextView) view.findViewById(R.id.converterLabelYear));
        utils.setFontAndShape((TextView) view.findViewById(R.id.calendarTypeTitle));

        utils.setFont(date0);
        utils.setFont(date1);
        utils.setFont(date2);
        //

        // fill views
        calendarTypeSpinner.setAdapter(new ShapedArrayAdapter<>(getContext(),
                Utils.DROPDOWN_LAYOUT, getResources().getStringArray(R.array.calendar_type)));
        calendarTypeSpinner.setSelection(0);

        startingYearOnYearSpinner = utils.fillYearMonthDaySpinners(getContext(),
                calendarTypeSpinner, yearSpinner, monthSpinner, daySpinner);

        calendarTypeSpinner.setOnItemSelectedListener(this);

        yearSpinner.setOnItemSelectedListener(this);
        monthSpinner.setOnItemSelectedListener(this);
        daySpinner.setOnItemSelectedListener(this);
        //
        return view;
    }

    private void fillCalendarInfo() {
        int year = startingYearOnYearSpinner + yearSpinner.getSelectedItemPosition();
        int month = monthSpinner.getSelectedItemPosition() + 1;
        int day = daySpinner.getSelectedItemPosition() + 1;

        CivilDate civilDate = null;
        PersianDate persianDate;
        IslamicDate islamicDate;

        StringBuilder sb = new StringBuilder();

        try {
            moreDate.setVisibility(View.VISIBLE);

            List<String> calendarsTextList = new ArrayList<>();
            switch (utils.calendarTypeFromPosition(calendarTypeSpinner.getSelectedItemPosition())) {
                case GREGORIAN:
                    civilDate = new CivilDate(year, month, day);
                    islamicDate = DateConverter.civilToIslamic(civilDate, 0);
                    persianDate = DateConverter.civilToPersian(civilDate);

                    calendarsTextList.add(utils.dateToString(civilDate));
                    calendarsTextList.add(utils.dateToString(persianDate));
                    calendarsTextList.add(utils.dateToString(islamicDate));
                    break;

                case ISLAMIC:
                    islamicDate = new IslamicDate(year, month, day);
                    civilDate = DateConverter.islamicToCivil(islamicDate);
                    persianDate = DateConverter.islamicToPersian(islamicDate);

                    calendarsTextList.add(utils.dateToString(islamicDate));
                    calendarsTextList.add(utils.dateToString(civilDate));
                    calendarsTextList.add(utils.dateToString(persianDate));
                    break;

                case SHAMSI:
                    persianDate = new PersianDate(year, month, day);
                    civilDate = DateConverter.persianToCivil(persianDate);
                    islamicDate = DateConverter.persianToIslamic(persianDate);

                    calendarsTextList.add(utils.dateToString(persianDate));
                    calendarsTextList.add(utils.dateToString(civilDate));
                    calendarsTextList.add(utils.dateToString(islamicDate));
                    break;
            }

            sb.append(utils.getWeekDayName(civilDate));
            sb.append(Constants.PERSIAN_COMMA);
            sb.append(" ");
            sb.append(calendarsTextList.get(0));

            date0.setText(utils.shape(sb.toString()));
            date1.setText(utils.shape(calendarsTextList.get(1)));
            date2.setText(utils.shape(calendarsTextList.get(2)));

        } catch (RuntimeException e) {
            moreDate.setVisibility(View.GONE);
            date0.setText(utils.shape(getString(R.string.date_exception)));
        }
    }

    @Override
    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
        switch (parent.getId()) {
            case R.id.yearSpinner:
            case R.id.monthSpinner:
            case R.id.daySpinner:
                fillCalendarInfo();
                break;

            case R.id.calendarTypeSpinner:
                startingYearOnYearSpinner = utils.fillYearMonthDaySpinners(getContext(),
                        calendarTypeSpinner, yearSpinner, monthSpinner, daySpinner);
                break;
        }
    }

    @Override
    public void onNothingSelected(AdapterView<?> parent) {

    }

    @Override
    public void onClick(View view) {
        utils.copyToClipboard(view);
    }
}