soderlind/read-offline

<?php
class Read_Offline_UX extends Read_Offline {


    private static $instance;
    //private $url;

    public static function get_instance() {

        if ( self::$instance ) {
            return self::$instance;
        }

        self::$instance = new self();
        return self::$instance;
    }

    private function __construct() {

        parent::get_instance();

        //$this->url = plugin_dir_url( dirname(__FILE__) );
        add_action( 'the_content', array( $this, 'embed_post' ) );
        //add_action('the_category', array($this,'embed_category'));
        add_filter( 'get_the_archive_title', array( $this, 'embed_category' ) );
        add_action( 'wp_enqueue_scripts', array( $this, 'add_script_style' ) );
    }

    function add_script_style() {
        wp_enqueue_style( 'read-offline-embed', READOFFLINE_URL . '/css/read-offline-embed.css',array(), READOFFLINE_VERSION );
        wp_enqueue_style( 'read-offline-css',   READOFFLINE_URL . '/css/read-offline.css',array(), READOFFLINE_VERSION );
        wp_enqueue_script( 'read-offline',      READOFFLINE_URL . '/js/read-offline-wp.js',array( 'jquery' ), READOFFLINE_VERSION );

        // google analytics track event
        if ( '1' == parent::$options['misc']['google'] ) {
            wp_enqueue_script( 'read-offline-ga', READOFFLINE_URL.'/js/read-offline-ga.js',array( 'jquery' ), READOFFLINE_VERSION );
        }

    }

    function embed_category( $title ) {
        return $title;
    }

    function embed_post( $content ) {
        global $post;
        if ( ! is_object( $post ) ) { return; }

        $placements = array_intersect_assoc(
            array(
                 'top'    => 1,
            'bottom' => 1,
            )
            , parent::$options['where']['placements']
        );
        //printf("<pre>%s</pre>",print_r($placements,true));
        $formats = array_intersect_key(
            array(
                     'pdf'   => __( 'Download PDF',  'read-offline' ),
            'epub'  => __( 'Download ePub', 'read-offline' ),
            'mobi'  => __( 'Download mobi', 'read-offline' ),
            'docx'  => __( 'Download DocX', 'read-offline' ),
            'print' => __( 'Print',         'read-offline' ),
                )
                , array_filter( parent::$options['what']['formats'] )
        );
        //printf("<pre>%s</pre>",print_r($formats,true));

        $readoffline = '<div class="readoffline-embed">';

        if ( '' != parent::$options['how']['link_text'] ) {
            $text = parent::$options['how']['link_text'];
            $text = str_ireplace( '%title%', $post->post_title,$text );
            $readoffline .= sprintf( '<div class="readoffline-embed-text">%s</div>',stripslashes( $text ) );
        }
        foreach ( $formats as $type => $document_type ) {
            $str_info = (1 == parent::$options['how']['icons_only']) ? '' : sprintf( '%s',$document_type );
            $readoffline .= sprintf('<div><a class="%s" href="%s" title="%s %s.%s" %s>%s</a></div>%s',
                $type
                , parent::query_url( $post->ID,$post->post_name,$type )
                , ('print' == $type) ? __( 'Print','read-offline' ) : __( 'Download','read-offline' )
                , $post->post_name
                , ('print' == $type) ? '' : $type
                , ('print' == $type) ? 'onclick="read_offline_print_me();return false;"': ''
                , $str_info
                , ('print' == $type) ? sprintf( '<iframe style="display:none;" id="read_offline_print" name="read_offline_print" src="%s"></iframe>',parent::query_url( $post->ID,$post->post_name,$type ) ) : ''
            );
        }
        $readoffline .= '</div>';

        // POST TYPE CHECK

        $post_types = array_keys(array_intersect(
            parent::$options['where']['post_types'],
            array(
                 'post' => 1,
                 'page' => 1,
            )
        ));

        if ( is_singular( $post_types ) && isset( $placements['top'] ) ) {
            $content = $readoffline . $content;
        }
        if ( is_singular( $post_types ) && isset( $placements['bottom'] ) ) {
            $content = $content . $readoffline;
        }

        return /*sprintf("<pre>%s</pre>",print_r(parent::$options,true)) .*/ $content;
    }
}