Suggestion: Query within selected boundary

[IgorEliezer]

I was at the local university participating in a lecture about OpenStretMap presented by the Brazilian OSM chapter. I seized the opportunity to talk about OpenStreetBrowser -- they didn't know it, they like it -- then I noticed that querying within a boundary would be necessary, but that wasn't possible. So that's my idea:

Say I want query all shops within this suburb. The workflow would be the following:

1. Menu "Places" > "Administrative Areas"
2. Click on a boundary.
3. The boundary pop-up will have the options show details, edit and select to query only here. Click on select to query only here. It gets the relation number 7734528;
4. All the boundaries are "dehighlighed" while the selected boundary will keep its black outline.
5. Now menu "Leisure, Sport and Shopping" > "Shopping"
6. Generate the following query:

   [out:json][timeout:25];
   relation(7734528);
   out geom;
   map_to_area -> .a;
   (
   node[shop](area.a);
   way[shop](area.a);
   relation[shop](area.a);
   );
   out geom;

7. Run the generated query.
8. Result: https://overpass-turbo.eu/s/Ig4. Compare with: categories=shop

Notes:

• Only one boundary can be selected.
• To avoid to query too big or too small areas, the boundary query will depend of zoom level availability.
• Once the user selects select to query only here, this option becomes remove boundary query and the left panel menu gets a [querying within: {relation name} × ] label. Clicking on the × or remove boundary query removes the boundary query.

EDIT: Forgot to add way and rel in the overpass-query. Fixed.

[plepe]

I already thought about such a feature and I'm pretty sure it will come. But will take some time :-) Btw, this is very similar to #95.