basic autocomplete for wcps queries

[Vlad Merticariu]

Create a simple html page containing a textbox where users can type wcps queries, and a submit button, which, upon being pressed opens a new tab with location:

​http://ows.rasdaman.org/rasdaman/ows?query=urlEncodedUserQuery

Based on the wcps grammar - ​http://rasdaman.org/browser/applications/petascope/petascope_main/src/main/java/petascope/wcps/parser/wcps.g4 - (1st iteration), and context information from the server, such as available coverages (2nd iteration), add autocomplete to the textbox: as the user types the query, a dropdown of suggested words should appear. The dropdown can be navigated using key-up and key-down, and a choice can be made by pressing Enter or key-right. The drop down can be closed by pressing Esc.

This ticket addresses the 1st iteration only: autocomplete based on the grammar.

Start by investigating existing tools that provide autocomplete based on antlr grammars, such as:

​https://github.com/oranoran/antlr4-autosuggest-js

General reading:

​https://tomassetti.me/autocompletion-editor-antlr/

[Dimitar Misev]

is this ticket still relevant or should be closed?