Upgrade a theme.
Theme_Upgrader::install
Install a theme package.
Theme_Upgrader::hide_activate_preview_actions
Don’t display the activate and preview actions to the user.
Theme_Upgrader::check_parent_theme_filter
Check if a child theme is being installed and we need to install its parent.
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Theme_Upgrader::install_strings
Initialize the installation strings.
Theme_Upgrader::upgrade_strings
Initialize the upgrade strings.
Theme_Upgrader_Skin::after
Theme_Upgrader_Skin::__construct
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Theme_Installer_Skin::after
Theme_Installer_Skin::before
Theme_Installer_Skin::__construct
Plugin_Upgrader::delete_old_plugin
Deletes the old plugin during an upgrade.
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Plugin_Upgrader::active_after
Turns off maintenance mode after upgrading an active plugin.
Plugin_Upgrader::active_before
Turns on maintenance mode before attempting to background update an active plugin.
Plugin_Upgrader::deactivate_plugin_before_upgrade
Deactivates a plugin before it is upgraded.