Modify (optional) our advanced search behavior to closer (not exact) match community needs

[DiegoPino]

and @alliomeria's one too

What

We discussed today some needs on Advanced search with @alliomeria and conclusions are:

• add more/remove should have an option for not triggering a search (this is hard since they need to rebuild the form and thus, once Ajax is in place, return a view, this is the Drupal way). I will try to mimic how the "required" filter option works or intercept the query. Issue I see is IF there was already a submission (means I searched for "pumpkin" and got results) and I press "add one", add "Dog" I need to still keep the old results where "pumpkin" was searched. OR I could intercept the Ajax response and simply NOT return any changes, thus the actual View would be still changed and thus the facets would not match... hard
• When using "required" option on the advanced search filter, we can actually start with an empty view but we have no control on the message that displays (No results found). the idea here is that if no input has been given we either use the Message provided by the Advanced Tab, Exposed Input, Input required special form
  or none, but never "No results found"
• Pressing enter on the form should not trigger add one/remove one. Should always submit the search.
• Selection of Field names should allow a "rewrite". That requires a new pattern/field with replacement options.

So far this is what I have. This is a lot of code but sadly for me needed for the release.

[DiegoPino]

😢

[DiegoPino]

Solved via 715eb8f