all-in-one-event-calendar/lib/theme/list.php

<?php

if ( ! class_exists( 'WP_List_Table' ) ) {
    require_once ABSPATH . 'wp-admin/includes/class-wp-list-table.php';
}
/**
 * Extends WP_List_Table to list our calerndar themes.
 *
 * @author     Time.ly Network Inc.
 * @since      2.0
 *
 * @package    AI1EC
 * @subpackage AI1EC.Theme
 */
class Ai1ec_Theme_List extends WP_List_Table {

    /**
     * @var array List of search terms
     */
    public $search = array();

    /**
     * @var array List of features
     */
    public $features = array();

    /**
     * @var Ai1ec_Registry_Object
     */
    protected $_registry;

    /**
     * Constructor
     *
     * Overriding constructor to allow inhibiting parents startup sequence.
     * If in some wild case you need to inhibit startup sequence of parent
     * class - pass `array( 'inhibit' => true )` as argument to this one.
     *
     * @param array $args Options to pass to parent constructor
     *
     * @return void Constructor does not return
     */
    public function __construct(
        Ai1ec_Registry_Object $registry,
        $args = array()
    ) {
        $this->_registry = $registry;
        if ( ! isset( $args['inhibit'] ) ) {
            parent::__construct( $args );
        }
    }

    /**
     * prepare_items function
     *
     * Prepares themes for display, applies search filters if available
     *
     * @return void
     **/
    public function prepare_items() {
        global $ct;

        // setting wp_themes to null in case
        // other plugins have changed its value
        unset( $GLOBALS['wp_themes'] );

        // get available themes
        $ct     = $this->current_theme_info();

        $themes = $this->_registry->get( 'theme.search' )
            ->filter_themes();

        if ( isset( $ct->name ) && isset( $themes[$ct->name] ) ) {
            unset( $themes[$ct->name] );
        }

        // sort themes using strnatcasecmp function
        uksort( $themes, 'strnatcasecmp' );

        // themes per page
        $per_page = 24;

        // get current page
        $page  = $this->get_pagenum();
        $start = ( $page - 1 ) * $per_page;

        $this->items = array_slice( $themes, $start, $per_page );

        // set total themes and themes per page
        $this->set_pagination_args( array(
            'total_items' => count( $themes ),
            'per_page'    => $per_page,
        ) );
    }

    /**
     * Returns html display of themes table
     *
     * @return string
     */
    public function display() {
        $this->tablenav( 'top' );
        echo '<div id="availablethemes">',
            $this->display_rows_or_placeholder(),
            '</div>';
        $this->tablenav( 'bottom' );
    }

    /**
     * tablenav function
     *
     * @return void
     */
    public function tablenav( $which = 'top' ) {
        if ( $this->get_pagination_arg( 'total_pages' ) <= 1 ) {
            return '';
        }
        ?>
        <div class="tablenav themes <?php echo $which; ?>">
            <?php $this->pagination( $which ); ?>
           <img src="<?php echo esc_url( ai1ec_admin_url( 'images/wpspin_light.gif' ) ); ?>"
                class="ajax-loading list-ajax-loading"
                alt="" />
          <br class="clear" />
        </div>
        <?php
    }

    /**
     * ajax_user_can function
     *
     * @return bool
     */
    public function ajax_user_can() {
        // Do not check edit_theme_options here.
        // AJAX calls for available themes require switch_themes.
        return current_user_can( 'switch_themes' );
    }

    /**
     * no_items function
     *
     * @return void
     **/
    public function no_items() {
        if ( is_multisite() ) {
            if (
                current_user_can( 'install_themes' ) &&
                current_user_can( 'manage_network_themes' )
            ) {
                printf(
                    Ai1ec_I18n::__(
                        'You only have one theme enabled for this site right now. Visit the Network Admin to <a href="%1$s">enable</a> or <a href="%2$s">install</a> more themes.'
                    ),
                    ai1ec_network_admin_url(
                        'site-themes.php?id=' . $GLOBALS['blog_id']
                    ),
                    ai1ec_network_admin_url( 'theme-install.php' )
                );

                return;
            } elseif ( current_user_can( 'manage_network_themes' ) ) {
                printf(
                    Ai1ec_I18n::__(
                        'You only have one theme enabled for this site right now. Visit the Network Admin to <a href="%1$s">enable</a> more themes.'
                    ),
                    ai1ec_network_admin_url(
                        'site-themes.php?id=' . $GLOBALS['blog_id']
                    )
                );

                return;
            }
            // else, fallthrough. install_themes doesn't help if you
            // can't enable it.
        } else {
            if ( current_user_can( 'install_themes' ) ) {
                printf(
                    Ai1ec_I18n::__(
                        'You only have one theme installed right now. You can choose from many free themes in the Timely Theme Directory at any time: just click on the <a href="%s">Install Themes</a> tab above.'
                    ),
                    ai1ec_admin_url( AI1EC_THEME_SELECTION_BASE_URL )
                );

                return;
            }
        }
        // Fallthrough.
        printf(
            Ai1ec_I18n::__(
                'Only the active theme is available to you. Contact the <em>%s</em> administrator to add more themes.'
            ),
            get_site_option( 'site_name' )
        );
    }

    /**
     * get_columns function
     *
     * @return array
     **/
    public function get_columns() {
        return array();
    }

    /**
     * display_rows function
     *
     * @return void
     **/
    function display_rows() {
        $themes = $this->items;
        $theme_names = array_keys( $themes );
        natcasesort( $theme_names );

        foreach ( $theme_names as $theme_name ) {
            $class = array( 'available-theme' );
            ?>
            <div class="<?php echo join( ' ', $class ); ?>">
            <?php
            if ( !empty( $theme_name ) ) :
                $template       = $themes[$theme_name]['Template'];
                $stylesheet     = $themes[$theme_name]['Stylesheet'];
                $title          = $themes[$theme_name]['Title'];
                $version        = $themes[$theme_name]['Version'];
                $description    = $themes[$theme_name]['Description'];
                $author         = $themes[$theme_name]['Author'];
                $screenshot     = $themes[$theme_name]['Screenshot'];
                $stylesheet_dir = $themes[$theme_name]['Stylesheet Dir'];
                $template_dir   = $themes[$theme_name]['Template Dir'];
                $parent_theme   = $themes[$theme_name]['Parent Theme'];
                $theme_root     = $themes[$theme_name]['Theme Root'];
                $theme_dir      = $themes[$theme_name]->get_stylesheet_directory();
                $theme_root_uri = esc_url( $themes[$theme_name]['Theme Root URI'] );
                $tags           = $themes[$theme_name]['Tags'];

                // Generate theme activation link.
                $activate_link  = ai1ec_admin_url( AI1EC_THEME_SELECTION_BASE_URL );
                $activate_link  = add_query_arg(
                    array(
                        'ai1ec_action'     => 'activate_theme',
                        'ai1ec_theme_dir'  => $theme_dir,
                        'ai1ec_legacy'     => false, // hardcoded for 2.2
                        'ai1ec_stylesheet' => $stylesheet,
                        'ai1ec_theme_root' => $theme_root,
                        'ai1ec_theme_url'  => $theme_root_uri . '/' . $stylesheet,
                    ),
                    $activate_link
                );
                $activate_link  = wp_nonce_url(
                    $activate_link,
                    'switch-ai1ec_theme_' . $template
                );

                $activate_text  = esc_attr(
                    sprintf(
                        Ai1ec_I18n::__( 'Activate &#8220;%s&#8221;' ),
                        $title
                    )
                );
                $actions        = array();
                $actions[]      = '<a href="' . $activate_link .
                    '" class="activatelink" title="' . $activate_text . '">' .
                    Ai1ec_I18n::__( 'Activate' ) . '</a>';

                $actions = apply_filters(
                    'theme_action_links',
                    $actions,
                    $themes[$theme_name]
                );

                $actions = implode ( ' | ', $actions );
            ?>
                <?php if ( $screenshot ) : ?>
                    <img src="<?php echo $theme_root_uri . '/' . $stylesheet . '/' . $screenshot; ?>" alt="" />
                <?php endif; ?>
                <h3>
            <?php
                /* translators: 1: theme title, 2: theme version, 3: theme author */
                printf(
                    Ai1ec_I18n::__( '%1$s %2$s by %3$s' ),
                    $title,
                    $version,
                    $author
                ); ?></h3>
                <p class="description"><?php echo $description; ?></p>
                <span class='action-links'><?php echo $actions; ?></span>
                <?php if ( current_user_can( 'edit_themes' ) && $parent_theme ) {
                    /* translators: 1: theme title, 2:  template dir, 3: stylesheet_dir, 4: theme title, 5: parent_theme */ ?>
                    <p>
                        <?php
                        printf(
                            Ai1ec_I18n::__(
                                'The template files are located in <code>%2$s</code>. The stylesheet files are located in <code>%3$s</code>. <strong>%4$s</strong> uses templates from <strong>%5$s</strong>. Changes made to the templates will affect both themes.'
                            ),
                            $title,
                            str_replace( WP_CONTENT_DIR, '', $template_dir ),
                            str_replace( WP_CONTENT_DIR, '', $stylesheet_dir ),
                            $title,
                            $parent_theme
                        );
                        ?>
                    </p>
            <?php } else { ?>
                <p>
                    <?php
                    printf(
                        Ai1ec_I18n::__(
                            'All of this theme&#8217;s files are located in <code>%2$s</code>.'
                        ),
                        $title,
                        str_replace( WP_CONTENT_DIR, '', $template_dir ),
                        str_replace( WP_CONTENT_DIR, '', $stylesheet_dir )
                    );
                    ?>
                </p>
            <?php } ?>
            <?php if ( $tags ) : ?>
                <p>
                 <?php echo Ai1ec_I18n::__( 'Tags:' ); ?> <?php echo join( ', ', $tags ); ?>
                </p>
            <?php endif; ?>
        <?php endif; // end if not empty theme_name ?>
            </div>
        <?php
        } // end foreach $theme_names
    }

    /**
     * {@internal Missing Short Description}}
     *
     * @since 2.0.0
     *
     * @return unknown
     */
    function current_theme_info() {
        $themes        = $this->_registry->get( 'theme.search' )
            ->filter_themes();
        $current_theme = $this->get_current_ai1ec_theme();
        if ( ! $themes ) {
            $ct       = new stdClass;
            $ct->name = $current_theme;
            return $ct;
        }

        if ( ! isset( $themes[$current_theme] ) ) {
            delete_option( 'ai1ec_current_theme' );
            $current_theme = $this->get_current_ai1ec_theme();
        }

        $ct                 = new stdClass;
        $ct->name           = $current_theme;
        $ct->title          = $themes[$current_theme]['Title'];
        $ct->version        = $themes[$current_theme]['Version'];
        $ct->parent_theme   = $themes[$current_theme]['Parent Theme'];
        $ct->template_dir   = $themes[$current_theme]['Template Dir'];
        $ct->stylesheet_dir = $themes[$current_theme]['Stylesheet Dir'];
        $ct->template       = $themes[$current_theme]['Template'];
        $ct->stylesheet     = $themes[$current_theme]['Stylesheet'];
        $ct->screenshot     = $themes[$current_theme]['Screenshot'];
        $ct->description    = $themes[$current_theme]['Description'];
        $ct->author         = $themes[$current_theme]['Author'];
        $ct->tags           = $themes[$current_theme]['Tags'];
        $ct->theme_root     = $themes[$current_theme]['Theme Root'];
        $ct->theme_root_uri = esc_url( $themes[$current_theme]['Theme Root URI'] );
        return $ct;
    }
    /**
     * Retrieve current theme display name.
     *
     * If the 'current_theme' option has already been set, then it will be returned
     * instead. If it is not set, then each theme will be iterated over until both
     * the current stylesheet and current template name.
     *
     * @since 1.5.0
     *
     * @return string
     */
    public function get_current_ai1ec_theme() {
        $option = $this->_registry->get( 'model.option' );
        $theme  = $option->get( 'ai1ec_current_theme', array() );
        return $theme['stylesheet'];
    }

}