paarmann.physikprofil.TimePreference.java Source code

Introduction

Here is the source code for paarmann.physikprofil.TimePreference.java

Source

/*
 * Copyright (c) 2015  Sebastian Paarmann
 * Licensed under the MIT license, see the LICENSE file
 */
/*
Modified by Sebastian Paarmann in 2015
*/
package paarmann.physikprofil;

import android.content.Context;
import android.preference.DialogPreference;
import android.text.format.DateFormat;
import android.util.AttributeSet;
import android.view.View;
import android.widget.TimePicker;

import org.apache.commons.lang3.time.DateFormatUtils;

import java.util.Calendar;

public class TimePreference extends DialogPreference {

    public static final String TAG = "TimePreference";

    private TimePicker _timeView;

    private Calendar _value;
    private boolean _isValueSet;

    // region Constructors

    public TimePreference(Context context, AttributeSet attrs) {
        super(context, attrs);
        this.init();
    }

    public TimePreference(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        this.init();
    }

    private void init() {
        _isValueSet = false;
        _value = null;
    }

    // endregion

    // region Event Handlers

    @Override
    protected View onCreateDialogView() {
        _timeView = new TimePicker(this.getContext());
        _timeView.setSaveFromParentEnabled(false);
        _timeView.setSaveEnabled(true);
        _timeView.setIs24HourView(DateFormat.is24HourFormat(this.getContext()));

        return _timeView;
    }

    @Override
    protected void onBindDialogView(View view) {
        super.onBindDialogView(view);

        if (_value == null) {
            Calendar now = Calendar.getInstance();
            _timeView.setCurrentHour(now.get(Calendar.HOUR_OF_DAY));
            _timeView.setCurrentMinute(now.get(Calendar.MINUTE));
        } else {
            _timeView.setCurrentHour(_value.get(Calendar.HOUR_OF_DAY));
            _timeView.setCurrentMinute(_value.get(Calendar.MINUTE));
        }
    }

    @Override
    protected void onSetInitialValue(boolean restorePersistedValue, Object defaultValue) {
        if (defaultValue == null || !(defaultValue instanceof Long)) {
            defaultValue = 0L;
        }

        if (restorePersistedValue) {
            _value = Calendar.getInstance();
            _value.setTimeInMillis(this.getPersistedLong((Long) defaultValue));
            _isValueSet = true;
            return;
        }

        Calendar newValue = Calendar.getInstance();

        newValue.setTimeInMillis((Long) defaultValue);

        this.setValue(_value);
    }

    @Override
    protected void onDialogClosed(boolean positiveResult) {
        super.onDialogClosed(positiveResult);

        if (positiveResult) {
            Calendar newValue = Calendar.getInstance();

            newValue.set(Calendar.HOUR_OF_DAY, _timeView.getCurrentHour());
            newValue.set(Calendar.MINUTE, _timeView.getCurrentMinute());

            if (this.callChangeListener(newValue)) {
                this.setValue(newValue);
            }
        }
    }

    // endregion

    // region Getters/Setters

    public Calendar getValue() {
        return _value;
    }

    public void setValue(Calendar newValue) {
        final boolean wasChanged = !newValue.equals(_value);

        if (wasChanged || !_isValueSet) {
            _value = newValue;
            _isValueSet = true;

            this.persistLong(_value.getTimeInMillis());

            if (wasChanged) {
                this.notifyChanged();
            }
        }
    }

    @Override
    public CharSequence getSummary() {
        return (_value == null) ? null : DateFormatUtils.format(_value, "HH:mm");
    }

    // endregion
}