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package tim.prune.function.browser;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.Locale;
import tim.prune.I18nManager;
import tim.prune.data.DataPoint;
import tim.prune.data.DoubleRange;
import tim.prune.data.TrackInfo;
/**
* Class to manage the generation of map urls
* for display in an external browser
*/
public abstract class UrlGenerator
{
/** Number formatter for five dp */
private static final NumberFormat FIVE_DP = NumberFormat.getNumberInstance(Locale.UK);
// Select the UK locale for this formatter so that decimal point is always used (not comma)
static {
if (FIVE_DP instanceof DecimalFormat) ((DecimalFormat) FIVE_DP).applyPattern("0.00000");
}
/** Constant for Google Maps */
public static final int MAP_SOURCE_GOOGLE = 0;
/** Constant for Open Street Maps */
public static final int MAP_SOURCE_OSM = 1;
/** Constant for Mapquest */
public static final int MAP_SOURCE_MAPQUEST = 2;
/** Constant for Yahoo */
public static final int MAP_SOURCE_YAHOO = 3;
/** Constant for Bing */
public static final int MAP_SOURCE_BING = 4;
/**
* Generate a URL for the given source and track info
* @param inSource source to use, either google or openstreetmap
* @param inTrackInfo track info
* @return url for map
*/
public static String generateUrl(int inSource, TrackInfo inTrackInfo)
{
if (inSource == MAP_SOURCE_GOOGLE) {
return generateGoogleUrl(inTrackInfo);
}
else if (inSource == MAP_SOURCE_MAPQUEST) {
return generateMapquestUrl(inTrackInfo);
}
else if (inSource == MAP_SOURCE_YAHOO) {
return generateYahooUrl(inTrackInfo);
}
else if (inSource == MAP_SOURCE_BING) {
return generateBingUrl(inTrackInfo);
}
return generateOpenStreetMapUrl(inTrackInfo);
}
/**
* Generate a url for Google maps
* @param inTrackInfo track information
* @return URL
*/
private static String generateGoogleUrl(TrackInfo inTrackInfo)
{
// Check if any data to display
if (inTrackInfo == null || inTrackInfo.getTrack() == null || inTrackInfo.getTrack().getNumPoints() < 1)
{
return null;
}
double medianLat = getMedianValue(inTrackInfo.getTrack().getLatRange());
double medianLon = getMedianValue(inTrackInfo.getTrack().getLonRange());
double latSpan = getSpan(inTrackInfo.getTrack().getLatRange());
double lonSpan = getSpan(inTrackInfo.getTrack().getLonRange());
// Build basic url with centre position and span
String url = "http://" + I18nManager.getText("url.googlemaps")
+ "/?ll=" + FIVE_DP.format(medianLat) + "," + FIVE_DP.format(medianLon)
+ "&spn=" + FIVE_DP.format(latSpan) + "," + FIVE_DP.format(lonSpan);
DataPoint currPoint = inTrackInfo.getCurrentPoint();
// Add selected point, if any
if (currPoint != null) {
url = url + "&q=" + FIVE_DP.format(currPoint.getLatitude().getDouble()) + ","
+ FIVE_DP.format(currPoint.getLongitude().getDouble());
if (currPoint.getWaypointName() != null) {
url = url + "(" + currPoint.getWaypointName() + ")";
}
}
return url;
}
/**
* Generate a url for Open Street Map
* @param inTrackInfo track information
* @return URL
*/
private static String generateOpenStreetMapUrl(TrackInfo inTrackInfo)
{
// Check if any data to display
if (inTrackInfo == null || inTrackInfo.getTrack() == null || inTrackInfo.getTrack().getNumPoints() < 1)
{
return null;
}
DoubleRange latRange = inTrackInfo.getTrack().getLatRange();
DoubleRange lonRange = inTrackInfo.getTrack().getLonRange();
// Build basic url using min and max lat and long
String url = "http://openstreetmap.org/?minlat=" + FIVE_DP.format(latRange.getMinimum())
+ "&maxlat=" + FIVE_DP.format(latRange.getMaximum())
+ "&minlon=" + FIVE_DP.format(lonRange.getMinimum()) + "&maxlon=" + FIVE_DP.format(lonRange.getMaximum());
DataPoint currPoint = inTrackInfo.getCurrentPoint();
// Add selected point, if any (no way to add point name?)
if (currPoint != null) {
url = url + "&mlat=" + FIVE_DP.format(currPoint.getLatitude().getDouble())
+ "&mlon=" + FIVE_DP.format(currPoint.getLongitude().getDouble());
}
return url;
}
/**
* Generate a url for Mapquest maps
* @param inTrackInfo track information
* @return URL
*/
private static String generateMapquestUrl(TrackInfo inTrackInfo)
{
// Check if any data to display
if (inTrackInfo == null || inTrackInfo.getTrack() == null || inTrackInfo.getTrack().getNumPoints() < 1)
{
return null;
}
double medianLat = getMedianValue(inTrackInfo.getTrack().getLatRange());
double medianLon = getMedianValue(inTrackInfo.getTrack().getLonRange());
// Build basic url with centre position
String url = "http://atlas.mapquest.com/maps/map.adp?latlongtype=decimal&latitude="
+ FIVE_DP.format(medianLat) + "&longitude=" + FIVE_DP.format(medianLon);
return url;
}
/**
* Generate a url for Yahoo maps
* @param inTrackInfo track information
* @return URL
*/
private static String generateYahooUrl(TrackInfo inTrackInfo)
{
// Check if any data to display
if (inTrackInfo == null || inTrackInfo.getTrack() == null || inTrackInfo.getTrack().getNumPoints() < 1)
{
return null;
}
double medianLat = getMedianValue(inTrackInfo.getTrack().getLatRange());
double medianLon = getMedianValue(inTrackInfo.getTrack().getLonRange());
// Build basic url with centre position
String url = "http://maps.yahoo.com/#lat=" + FIVE_DP.format(medianLat)
+ "&lon=" + FIVE_DP.format(medianLon) + "&zoom=13";
return url;
}
/**
* Generate a url for Bing maps
* @param inTrackInfo track information
* @return URL
*/
private static String generateBingUrl(TrackInfo inTrackInfo)
{
// Check if any data to display
if (inTrackInfo == null || inTrackInfo.getTrack() == null || inTrackInfo.getTrack().getNumPoints() < 1)
{
return null;
}
double medianLat = getMedianValue(inTrackInfo.getTrack().getLatRange());
double medianLon = getMedianValue(inTrackInfo.getTrack().getLonRange());
// Build basic url with centre position
String latStr = FIVE_DP.format(medianLat);
String lonStr = FIVE_DP.format(medianLon);
String url = "http://bing.com/maps/default.aspx?cp=" + latStr + "~" + lonStr
+ "&where1=" + latStr + "%2C%20" + lonStr;
return url;
}
/**
* Get the median value from the given lat/long range
* @param inRange range of values
* @return median value
*/
private static double getMedianValue(DoubleRange inRange)
{
return (inRange.getMaximum() + inRange.getMinimum()) / 2.0;
}
/**
* Get the span of the given lat/long range
* @param inRange range of values
* @return span
*/
private static double getSpan(DoubleRange inRange)
{
return inRange.getMaximum() - inRange.getMinimum();
}
}
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