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package cgeo.geocaching.apps.cache.navi;
import cgeo.geocaching.cgCache;
import cgeo.geocaching.cgWaypoint;
import cgeo.geocaching.geopoint.Geopoint;
import android.app.Activity;
/**
* navigation app for simple point navigation (no differentiation between cache/waypoint/point)
*/
abstract class AbstractPointNavigationApp extends AbstractNavigationApp {
protected AbstractPointNavigationApp(String name, String intent) {
super(name, intent);
}
protected AbstractPointNavigationApp(String name, String intent, String packageName) {
super(name, intent, packageName);
}
@Override
public final boolean invoke(Activity activity, cgCache cache, cgWaypoint waypoint, Geopoint coords) {
if (cache == null && waypoint == null && coords == null) {
return false;
}
try {
if (isInstalled()) {
final Geopoint point = getCoordinates(cache, waypoint, coords);
if (point != null) {
navigate(activity, point);
return true;
}
}
} catch (Exception e) {
// nothing
}
return false;
}
protected abstract void navigate(Activity activity, Geopoint point);
/**
* Return the first of the cache coordinates, the waypoint coordinates or the extra coordinates. <code>null</code>
* entities are skipped.
*
* @param cache a cache
* @param waypoint a waypoint
* @param coords extra coordinates
* @return the first non-null coordinates, or null if none are set
*/
private static Geopoint getCoordinates(final cgCache cache, final cgWaypoint waypoint, final Geopoint coords) {
if (cache != null && cache.getCoords() != null) {
return cache.getCoords();
}
if (waypoint != null && waypoint.getCoords() != null) {
return waypoint.getCoords();
}
return coords;
}
}
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