/*
This file is part of RouteConverter.
RouteConverter is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
RouteConverter 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with RouteConverter; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Copyright (C) 2007 Christian Pesch. All Rights Reserved.
*/
package slash.navigation.converter.gui.helpers;
import slash.common.type.CompactCalendar;
import slash.navigation.base.BaseNavigationPosition;
import slash.navigation.common.NavigationPosition;
import slash.navigation.common.DegreeFormat;
import slash.navigation.common.UnitSystem;
import slash.navigation.converter.gui.RouteConverter;
import java.text.DateFormat;
import java.text.ParseException;
import java.util.Date;
import java.util.TimeZone;
import java.util.prefs.Preferences;
import static java.lang.Math.abs;
import static java.lang.Math.round;
import static java.lang.String.format;
import static java.text.DateFormat.MEDIUM;
import static java.text.DateFormat.SHORT;
import static slash.common.io.Transfer.roundFraction;
import static slash.common.type.CompactCalendar.fromDate;
/**
* A helper for rendering aspects of {@link BaseNavigationPosition}.
*
* @author Christian Pesch
*/
public class PositionHelper {
private static final Preferences preferences = Preferences.userNodeForPackage(PositionHelper.class);
private static final double maximumDistanceDisplayedInMeters = preferences.getDouble("maximumDistanceDisplayedInMeters", 10000.0);
private static final double maximumDistanceDisplayedInHundredMeters = preferences.getDouble("maximumDistanceDisplayedInHundredMeters", 200000.0);
private static final DateFormat dateTimeFormat = DateFormat.getDateTimeInstance(SHORT, MEDIUM);
private static final DateFormat timeFormat = DateFormat.getTimeInstance(MEDIUM);
private static String currentTimeZone = "";
public static String formatDistance(Double distance) {
if (distance == null || distance <= 0.0)
return "";
UnitSystem unitSystem = RouteConverter.getInstance().getUnitSystemModel().getUnitSystem();
double distanceInMeters = unitSystem.valueToUnit(distance);
if (abs(distanceInMeters) < maximumDistanceDisplayedInMeters)
return format("%d %s", round(distanceInMeters), unitSystem.getElevationName());
double distanceInKiloMeters = unitSystem.distanceToUnit(distance / 1000.0);
if (abs(distanceInMeters) < maximumDistanceDisplayedInHundredMeters)
return format("%s %s", roundFraction(distanceInKiloMeters, 1), unitSystem.getDistanceName());
return format("%d %s", round(distanceInKiloMeters), unitSystem.getDistanceName());
}
public static String formatElevation(Double elevation) {
if (elevation == null)
return "";
UnitSystem unitSystem = RouteConverter.getInstance().getUnitSystemModel().getUnitSystem();
double distanceInUnit = unitSystem.valueToUnit(elevation);
return format("%d %s", round(distanceInUnit), unitSystem.getElevationName());
}
public static String extractElevation(NavigationPosition position) {
return formatElevation(position.getElevation());
}
public static String formatLongitude(Double longitude) {
if (longitude == null)
return "";
DegreeFormat degreeFormat = RouteConverter.getInstance().getUnitSystemModel().getDegreeFormat();
return degreeFormat.longitudeToDegrees(longitude);
}
public static String formatLatitude(Double latitude) {
if (latitude == null)
return "";
DegreeFormat degreeFormat = RouteConverter.getInstance().getUnitSystemModel().getDegreeFormat();
return degreeFormat.latitudeToDegrees(latitude);
}
private static String formatSpeed(Double speed) {
if (speed == null)
return "";
UnitSystem unitSystem = RouteConverter.getInstance().getUnitSystemModel().getUnitSystem();
Double speedInUnit = unitSystem.distanceToUnit(speed);
if (abs(speedInUnit) < 10.0)
return format("%s %s", roundFraction(speedInUnit, 1), unitSystem.getSpeedName());
else
return format("%d %s", round(speedInUnit), unitSystem.getSpeedName());
}
public static String extractSpeed(NavigationPosition position) {
return formatSpeed(position.getSpeed());
}
private static DateFormat getDateTimeFormat(String timeZonePreference) {
if (!currentTimeZone.equals(timeZonePreference)) {
dateTimeFormat.setTimeZone(TimeZone.getTimeZone(timeZonePreference));
currentTimeZone = timeZonePreference;
}
return dateTimeFormat;
}
private static DateFormat getTimeFormat(String timeZonePreference) {
if (!currentTimeZone.equals(timeZonePreference)) {
timeFormat.setTimeZone(TimeZone.getTimeZone(timeZonePreference));
currentTimeZone = timeZonePreference;
}
return timeFormat;
}
public static String formatDate(CompactCalendar time) {
DateFormat dateFormat = DateFormat.getDateInstance(SHORT);
String timeZonePreference = RouteConverter.getInstance().getTimeZonePreference();
dateFormat.setTimeZone(TimeZone.getTimeZone(timeZonePreference));
return dateFormat.format(time.getTime());
}
private static String formatDateTime(CompactCalendar time) {
String timeZonePreference = RouteConverter.getInstance().getTimeZonePreference();
return getDateTimeFormat(timeZonePreference).format(time.getTime());
}
private static String formatTime(CompactCalendar time) {
String timeZonePreference = RouteConverter.getInstance().getTimeZonePreference();
return getTimeFormat(timeZonePreference).format(time.getTime());
}
public static String extractDateTime(NavigationPosition position) {
CompactCalendar time = position.getTime();
return time != null ? formatDateTime(time) : "";
}
public static String extractTime(NavigationPosition position) {
CompactCalendar time = position.getTime();
return time != null ? formatTime(time) : "";
}
static CompactCalendar parseDateTime(String stringValue, String timeZonePreference) throws ParseException {
Date parsed = getDateTimeFormat(timeZonePreference).parse(stringValue);
return fromDate(parsed);
}
static CompactCalendar parseTime(String stringValue, String timeZonePreference) throws ParseException {
Date parsed = getTimeFormat(timeZonePreference).parse(stringValue);
return fromDate(parsed);
}
public static CompactCalendar parseDateTime(String stringValue) throws ParseException {
String timeZonePreference = RouteConverter.getInstance().getTimeZonePreference();
return parseDateTime(stringValue, timeZonePreference);
}
public static CompactCalendar parseTime(String stringValue) throws ParseException {
String timeZonePreference = RouteConverter.getInstance().getTimeZonePreference();
return parseTime(stringValue, timeZonePreference);
}
}