function bp_dtheme_setup() {

	// Load the AJAX functions for the theme
	require( get_template_directory() . '/_inc/ajax.php' );

	// This theme styles the visual editor with editor-style.css to match the theme style.
	add_editor_style();

	// This theme comes with all the BuddyPress goodies
	add_theme_support( 'buddypress' );

	// This theme uses post thumbnails
	add_theme_support( 'post-thumbnails' );

	// Add default posts and comments RSS feed links to head
	add_theme_support( 'automatic-feed-links' );

	// Add responsive layout support to bp-default without forcing child
	// themes to inherit it if they don't want to
	add_theme_support( 'bp-default-responsive' );

	// This theme uses wp_nav_menu() in one location.
	register_nav_menus( array(
		'primary' => __( 'Primary Navigation', 'buddypress' ),
	) );

	// This theme allows users to set a custom background
	$custom_background_args = array(
		'wp-head-callback' => 'bp_dtheme_custom_background_style'
	);
	add_theme_support( 'custom-background', $custom_background_args );

	// Add custom header support if allowed
	if ( !defined( 'BP_DTHEME_DISABLE_CUSTOM_HEADER' ) ) {
		define( 'HEADER_TEXTCOLOR', 'FFFFFF' );

		// The height and width of your custom header. You can hook into the theme's own filters to change these values.
		// Add a filter to bp_dtheme_header_image_width and bp_dtheme_header_image_height to change these values.
		define( 'HEADER_IMAGE_WIDTH',  apply_filters( 'bp_dtheme_header_image_width',  1250 ) );
		define( 'HEADER_IMAGE_HEIGHT', apply_filters( 'bp_dtheme_header_image_height', 133  ) );

		// We'll be using post thumbnails for custom header images on posts and pages. We want them to be 1250 pixels wide by 133 pixels tall.
		// Larger images will be auto-cropped to fit, smaller ones will be ignored.
		set_post_thumbnail_size( HEADER_IMAGE_WIDTH, HEADER_IMAGE_HEIGHT, true );

		// Add a way for the custom header to be styled in the admin panel that controls custom headers.
		$custom_header_args = array(
			'wp-head-callback' => 'bp_dtheme_header_style',
			'admin-head-callback' => 'bp_dtheme_admin_header_style'
		);
		add_theme_support( 'custom-header', $custom_header_args );
	}

	if ( ! is_admin() || ( defined( 'DOING_AJAX' ) && DOING_AJAX ) ) {
		// Register buttons for the relevant component templates
		// Friends button
		if ( bp_is_active( 'friends' ) )
			add_action( 'bp_member_header_actions',    'bp_add_friend_button',           5 );

		// Activity button
		if ( bp_is_active( 'activity' ) && bp_activity_do_mentions() )
			add_action( 'bp_member_header_actions',    'bp_send_public_message_button',  20 );

		// Messages button
		if ( bp_is_active( 'messages' ) )
			add_action( 'bp_member_header_actions',    'bp_send_private_message_button', 20 );

		// Group buttons
		if ( bp_is_active( 'groups' ) ) {
			add_action( 'bp_group_header_actions',     'bp_group_join_button',           5 );
			add_action( 'bp_group_header_actions',     'bp_group_new_topic_button',      20 );
			add_action( 'bp_directory_groups_actions', 'bp_group_join_button' );
		}

		// Blog button
		if ( bp_is_active( 'blogs' ) )
			add_action( 'bp_directory_blogs_actions',  'bp_blogs_visit_blog_button' );
	}
}