Wordpress template layouts

fx-layouts.php

<?php

function fx_layout_content()
{
    load_template( FX_Layouts::$main_template );
}

function fx_layout_base()
{
    return FX_Layouts::$base;
}


class FX_Layouts
{
    /**
     * Stores the full path to the main template file
     * @var string
     */
    public static $main_template;

    /**
     * Stores the base name of the template file; e.g. 'page' for 'page.php' etc.
     * @var  string
     */
    public static $base;

    public static function wrap( $template )
    {
        // stash the main template
        self::$main_template = $template;
        self::$base          = substr( basename( self::$main_template ), 0, -4 );

        if ( 'index' == self::$base )
            self::$base = false;

        /**
         * Create template hierarchy layouts/{type}.php, layouts/master.php
         */
        $templates = array( 'layouts/master.php' );

        if(is_archive() || is_post_type_archive() || is_search() || is_tax())
            array_unshift( $templates, 'layouts/archive.php' );

        if ( self::$base )
            array_unshift( $templates, sprintf( 'layouts/%s.php', self::$base ) );

        // News & Events Archive
        if( is_home() )
            array_unshift( $templates, 'layouts/blog.php' );

        if( is_single() )
            array_unshift( $templates, 'layouts/single.php' );

        return locate_template( $templates );
    }
}

add_filter( 'template_include', array( 'FX_Layouts', 'wrap' ), 99 );