Provide a way to manually override geo-detection

[benjaminpick]

Is your feature request related to a problem / specific use-case? Please describe.

"My goal is to use this plugin to show country-specific content on certain pages. (using the shortcodes provided by the plugin)
We have a certain set of countries which we will have specific content. (US, CA, GB, …).
But we also would want the option to be able to switch between these countries so you can access any country-specific content."

https://wordpress.org/support/topic/region-select-2/

Describe the solution you'd like

"Also is it possible to overwrite the cookie with another value so it would load in the different country-specific content I mentioned?"

ToDos (details see post below):

• JS function window.geoip_detect.set_override
• When set_override is called, geo-conditionals (e.g. hide-if) need to execute again
• country_selector receives a new parameter "autosave" which calls the JS function
• country_selector receives a new parameter "list" which lets you enumerate the countries you want to show
• PHP function `geoip_detect2_set_override_for_this_client($record, $duration = -1) [ For AJAX mode ]
• PHP function `geoip_detect2_set_override_for_this_client($record, $duration = -1) [ For non-AJAX mode ]

[benjaminpick]

Technical draft

AJAX mode: changing the cookie
Non-AJAX mode: set a cookie, [ sign it with a secret key (so it can't be forged) ? ], and if set, it will override the geo lookup function ...
(Should it use the same cookie format than the AJAX mode?)

API:

• PHP function geoip_detect2_set_override_for_this_client($record, $duration = -1) / geoip_detect2_set_override_for_this_client_data($data, $duration = -1) (can work in AJAX and non-AJAX mode, enriches data)
• JS function window.geoip_detect.set_override(record, duration) / window.geoip_detect.set_override_data(data, duration) (only works in AJAX mode, no enrichment or via AJAX)
• country_selector receives a new parameter "autosave" which calls the JS function
• country_selector receives a new parameter "list" which lets you enumerate the countries you want to show

Example:

window.geoip_detect.set_override_data({country: { iso_code: 'de' } }, 7 * 24 * 60 * 60)