-keep the browser URL bar in sync with the current search/zoom-level
-introduce the "map:" predicate, to be used as the current viewport in
the map aspect. This was previously achieved with the locrect predicate. We
try to keep this new predicate unknown to the server, and replaced on
the fly by an equivalent locrect predicate.
-stay on the map aspect when the search expression has a map predicate.
Same thing when loading a URL with a map predicate parameter: try to
load directly on map aspect, instead of going to search aspect first.
-make sure there's only at most one map query in flight at all times
Change-Id: Ibf928ee5c926670c221f212f14ca9799e1e7bb79
This change adds the "locrect" search predicate, which works like the
"loc" predicate, except it allows to specify the coordinates of a
rectangular area as a location, instead of a named location.
The coordinates are the latitude and longitude of the North-East corner
of the rectangle, followed by the latitude and longitude of the
South-West corner. For example: locrect:48.63,-123.37,46.59,-121.28
Related: issue #934
Change-Id: I0cf39c1d0b49d557b2081f07b2c8b4508ccfc052
mpl