Programmatically install and activate child-theme

Question

Is there a way to install and activate a child-theme from zip file like we do with TGM-Plugin-Activation which helping us to suggest or force user to install and activate a plugin.

So my idea is that i want to create a plugin with a form to choose child themes and then when the user choose one it will install and activate it.

Thank you.

EDIT

I have a plugin who create an option page with this kind of forms.

Then I retrieve variables like this:

function getHeader($theme)
{
global $Header;
global $biblio_options;
$biblio_settings = get_option('biblio_options', $biblio_options);
$theme = $biblio_settings['themechoice'];
if ($theme == 'thmone' || $theme == null)
    {
    $Header = get_header();
    }

....

when client choose for exemple theme 1 then i changed the header and it's style and everything works fine.

But now I like to have the same with child theme so when user choose theme 1 on the plugin it will install a child-theme1 from a zip file who will be on the plugin folder then activate it.

Thank you for your help.

Answer 1

Yes, you can activate the child-theme dynamically. To do that follow the steps

1. Move the unzipped child-theme to the themes folder
2. Find the name of the child theme(I guess you already have that)
3. Then Update the options table by update_option('stylesheet', 'NAME OF THE CHILD THEME')

NOTE: You need to be sure that the active theme and child theme is compatible with each other.