Extension:GoogleCustomWikiSearch

What can this extension do?
The Google Custom Wiki Search extension allows MediaWiki integration with Google Custom Search or Google Site Search.

This extension was sponsored by the The Plant Encyclopedia and was developed by WikiWorks.

Usage
Defines a special page (Special:GoogleCustomWikiSearch) that performs a Google search on the wiki. Optionally, replaces the built-in search functionality with a Google search.

Download instructions
You can download the code, in .tgz format, here.

You can also download the code directly via Git from the MediaWiki source code repository. From a command line, you can call the following:

To view the code online, including version history for each file, go here.

Installation
To install this extension, add the following to LocalSettings.php:

Basic

 * $gcwsID - Google Custom Search ID - requires account with Google. The ID can be found in your GCS control panel under "basic information". Note that if this is left blank (not set in LocalSettings), the result will be a Google site search.
 * $gcwsReplaceSearch - Set to  to completely replace the MediaWiki search engine with a Google search. Defaults to.
 * $gcwsTheme - Possible values are: 'BUBBLEGUM', 'ESPRESSO', 'GREENSKY', 'MINIMALIST', 'SHINY'. Defaults to 'V2_DEFAULT'.

Advanced
It should be set similar to this example: Note: The custom search options variable may leave out customSearchControl.draw, though options will only display then if the variable is named "options".
 * $gcwsCustomSearchOptions - For those who want additional customization, set this instead of $gcwsID (which will be ignored if this is set). Set this variable to equal the insertion code provided by Google. Support for this feature is somewhat experimental.

Google Custom Search extensions

 * Extension:GoogleCSE - Doesn't seem to work with MW1.19+
 * Extension:Google Custom Search Engine - Requires some extra setup

Google Site Search extensions

 * Extension:GoogleSiteSearch - Compatible with MW1.21+. Allows displaying results from both Google and the built-in search on the same page.