Gadgetbridge/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/util/XTimePreference.java

/*  Copyright (C) 2017-2020 Andreas Shimokawa, Carsten Pfeiffer, José Rebelo

    This file is part of Gadgetbridge.

    Gadgetbridge is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published
    by the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Gadgetbridge 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 Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
package nodomain.freeyourgadget.gadgetbridge.util;

import android.content.Context;
import android.content.res.TypedArray;
import android.text.format.DateFormat;
import android.util.AttributeSet;

import androidx.preference.DialogPreference;

public class XTimePreference extends DialogPreference {
    protected int hour = 0;
    protected int minute = 0;

    public XTimePreference(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    protected Object onGetDefaultValue(TypedArray a, int index) {
        return a.getString(index);
    }

    @Override
    protected void onSetInitialValue(boolean restoreValue, Object defaultValue) {
        String time;

        if (restoreValue) {
            if (defaultValue == null) {
                time = getPersistedString("00:00");
            } else {
                time = getPersistedString(defaultValue.toString());
            }
        } else {
            if (defaultValue != null) {
                time = defaultValue.toString();
            } else {
                time = "00:00";
            }
        }

        String[] pieces = time.split(":");

        hour = Integer.parseInt(pieces[0]);
        minute = Integer.parseInt(pieces[1]);

        updateSummary();
    }

    void updateSummary() {
        if (DateFormat.is24HourFormat(getContext()))
            setSummary(getTime24h());
        else
            setSummary(getTime12h());
    }

    String getTime24h() {
        return String.format("%02d", hour) + ":" + String.format("%02d", minute);
    }

    private String getTime12h() {
        String suffix = hour < 12 ? " AM" : " PM";
        int h = hour > 12 ? hour - 12 : hour;

        return h + ":" + String.format("%02d", minute) + suffix;
    }

    void persistStringValue(String value) {
        persistString(value);
    }
}