com.mpower.daktar.android.widgets.DateTimeWidget.java Source code

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Here is the source code for com.mpower.daktar.android.widgets.DateTimeWidget.java

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/*
 * Copyright (C) 2009 University of Washington
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

package com.mpower.daktar.android.widgets;

import java.util.Calendar;
import java.util.Date;

import org.javarosa.core.model.data.DateTimeData;
import org.javarosa.core.model.data.IAnswerData;
import org.javarosa.form.api.FormEntryPrompt;
import org.joda.time.DateTime;

import android.content.Context;
import android.view.Gravity;
import android.view.inputmethod.InputMethodManager;
import android.widget.DatePicker;
import android.widget.TimePicker;

/**
 * Displays a DatePicker widget. DateWidget handles leap years and does not
 * allow dates that do not exist.
 *
 * @author Carl Hartung (carlhartung@gmail.com)
 * @author Yaw Anokwa (yanokwa@gmail.com)
 */
public class DateTimeWidget extends QuestionWidget {

    private final DatePicker mDatePicker;
    private final TimePicker mTimePicker;
    private final DatePicker.OnDateChangedListener mDateListener;

    public DateTimeWidget(final Context context, final FormEntryPrompt prompt) {
        super(context, prompt);

        mDatePicker = new DatePicker(getContext());
        mDatePicker.setFocusable(!prompt.isReadOnly());
        mDatePicker.setEnabled(!prompt.isReadOnly());

        mTimePicker = new TimePicker(getContext());
        mTimePicker.setFocusable(!prompt.isReadOnly());
        mTimePicker.setEnabled(!prompt.isReadOnly());
        mTimePicker.setPadding(0, 20, 0, 0);

        final String clockType = android.provider.Settings.System.getString(context.getContentResolver(),
                android.provider.Settings.System.TIME_12_24);
        if (clockType == null || clockType.equalsIgnoreCase("24")) {
            mTimePicker.setIs24HourView(true);
        }

        mDateListener = new DatePicker.OnDateChangedListener() {
            @Override
            public void onDateChanged(final DatePicker view, final int year, final int month, final int day) {
                if (mPrompt.isReadOnly()) {
                    setAnswer();
                } else {
                    // handle leap years and number of days in month
                    // TODO
                    // http://code.google.com/p/android/issues/detail?id=2081
                    final Calendar c = Calendar.getInstance();
                    c.set(year, month, 1);
                    final int max = c.getActualMaximum(Calendar.DAY_OF_MONTH);
                    if (day > max) {
                        mDatePicker.updateDate(year, month, max);
                    } else {
                        mDatePicker.updateDate(year, month, day);
                    }
                }
            }
        };

        // If there's an answer, use it.
        setAnswer();

        setGravity(Gravity.LEFT);
        addView(mDatePicker);
        addView(mTimePicker);

    }

    private void setAnswer() {

        if (mPrompt.getAnswerValue() != null) {

            final DateTime ldt = new DateTime(
                    ((Date) ((DateTimeData) mPrompt.getAnswerValue()).getValue()).getTime());
            mDatePicker.init(ldt.getYear(), ldt.getMonthOfYear() - 1, ldt.getDayOfMonth(), mDateListener);
            mTimePicker.setCurrentHour(ldt.getHourOfDay());
            mTimePicker.setCurrentMinute(ldt.getMinuteOfHour());

        } else {
            // create time widget with current time as of right now
            clearAnswer();
        }
    }

    /**
     * Resets date to today.
     */
    @Override
    public void clearAnswer() {
        final DateTime ldt = new DateTime();
        mDatePicker.init(ldt.getYear(), ldt.getMonthOfYear() - 1, ldt.getDayOfMonth(), mDateListener);
        mTimePicker.setCurrentHour(ldt.getHourOfDay());
        mTimePicker.setCurrentMinute(ldt.getMinuteOfHour());
    }

    @Override
    public IAnswerData getAnswer() {
        final DateTime ldt = new DateTime(mDatePicker.getYear(), mDatePicker.getMonth() + 1,
                mDatePicker.getDayOfMonth(), mTimePicker.getCurrentHour(), mTimePicker.getCurrentMinute(), 0);
        // DateTime utc = ldt.withZone(DateTimeZone.forID("UTC"));
        return new DateTimeData(ldt.toDate());
    }

    @Override
    public void setFocus(final Context context) {
        // Hide the soft keyboard if it's showing.
        final InputMethodManager inputManager = (InputMethodManager) context
                .getSystemService(Context.INPUT_METHOD_SERVICE);
        inputManager.hideSoftInputFromWindow(getWindowToken(), 0);
    }

    @Override
    public void setOnLongClickListener(final OnLongClickListener l) {
        mDatePicker.setOnLongClickListener(l);
        mTimePicker.setOnLongClickListener(l);
    }

    @Override
    public void cancelLongPress() {
        super.cancelLongPress();
        mDatePicker.cancelLongPress();
        mTimePicker.cancelLongPress();
    }

}