First Impression

@override
 Widget build(BuildContext context) {
   return Column(
     children: <Widget>[
       TextField(
         controller: _searchController,
         decoration: InputDecoration(
           hintText: 'Address',
           border: OutlineInputBorder(),
         ),
         onChanged: (_) => _refreshState(),
         onSubmitted: validForSearch
             ? (query) => widget.onSubmit(context, query)
             : null,
       ),
       SizedBox(height: 8.0),
       Row(
         children: <Widget>[
           RaisedButton(
             child: Text("Go"),
             onPressed: validForSearch
                 ? () => widget.onSubmit(context, _searchController.text)
                 : null,
           ),
           SizedBox(width: 8.0),
           RaisedButton(
             child: Text("My location"),
             onPressed: () => widget.onSubmit(context, SEARCH_MY_LOCATION),
           )
         ],
       )
     ],
   );
 }