[gnome-maps] placeEntry: Add support for plain coordinates

[Jonas Danielsson <jonasdn src gnome org>]

commit d6f283bb1428559ac2926701ff82e55f3fcafa29
Author: Damián Nohales <damiannohales gmail com>
Date:   Mon Sep 1 16:12:11 2014 -0300

    placeEntry: Add support for plain coordinates
    
    This adds support for parsing plain coordinates with the format
    "<latitude>, <longitude>" in PlaceEntry class. When PlaceEntry
    detects a valid plain coordinate (valid format, between valid ranges)
    being introduced, it will skip the place search, also, no reverse
    search is performed.
    
    Plain coordinates places are internally represented by a GeocodePlace
    object whose "name" property is null.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=735842

 src/placeEntry.js |   36 ++++++++++++++++++++++++++++++++++--
 1 files changed, 34 insertions(+), 2 deletions(-)
---
diff --git a/src/placeEntry.js b/src/placeEntry.js
index 806db5f..7cc07cb 100644
--- a/src/placeEntry.js
+++ b/src/placeEntry.js
@@ -36,6 +36,9 @@ Geocode.Location.prototype.equals = function(location) {
             location.longitude === this.longitude);
 };
 
+// Matches coordinates string with the format "<lat>, <long>"
+const COORDINATES_REGEX = /^\s*(\-?\d+(?:\.\d+)?)\s*,\s*(\-?\d+(?:\.\d+)?)\s*$/;
+
 const PlaceEntry = new Lang.Class({
     Name: 'PlaceEntry',
     Extends: Gtk.SearchEntry,
@@ -55,8 +58,11 @@ const PlaceEntry = new Lang.Class({
             return;
 
         if (p) {
-            this.text = p.name;
-            Application.placeStore.addRecent(p);
+            if (p.name) {
+                this.text = p.name;
+                Application.placeStore.addRecent(p);
+            } else
+                this.text = p.location.latitude + ', ' + p.location.longitude;
         } else
             this.text = '';
 
@@ -130,12 +136,38 @@ const PlaceEntry = new Lang.Class({
         return popover;
     },
 
+    _validateCoordinates: function(lat, lon) {
+        return lat <= 90 && lat >= -90 && lon <= 180 && lon >= -180;
+    },
+
+    _parseCoordinates: function(text) {
+        let match = text.match(COORDINATES_REGEX);
+
+        if (match) {
+            let latitude = parseFloat(match[1]);
+            let longitude = parseFloat(match[2]);
+
+            if (this._validateCoordinates(latitude, longitude)) {
+                return new Geocode.Location({ latitude: latitude,
+                                              longitude: longitude });
+            } else
+                return null;
+        } else
+            return null;
+    },
+
     _onActivate: function() {
         if (this.text.length === 0) {
             this.place = null;
             return;
         }
 
+        let parsedLocation = this._parseCoordinates(this.text);
+        if (parsedLocation) {
+            this.place = new Geocode.Place({ location: parsedLocation });
+            return;
+        }
+
         let bbox = this._mapView.view.get_bounding_box();
 
         this._popover.showSpinner();