post-content-cell.php

<?php

class WPDD_layout_cell_post_content extends WPDD_layout_cell {

    function __construct($name, $width, $css_class_name = '', $content = null, $css_id = '') {
        parent::__construct($name, $width, $css_class_name, 'cell-post-content', $content, $css_id);

        $this->set_cell_type('cell-post-content');
    }

    function frontend_render_cell_content($target) {
        global $WPV_templates, $post, $id, $authordata;

        $cell_content = $this->get_content();

        if ($cell_content['page'] == 'current_page') {
            do_action('ddl-layouts-render-start-post-content');
        }

        // View template support is only here for backwards support before 0.9.2.
        // It's not used for post content cells for 0.9.2 and later.
        if (isset($WPV_templates) && isset($cell_content['ddl_view_template_id']) && $cell_content['ddl_view_template_id'] != 'None') {
            $content_template_id = $cell_content['ddl_view_template_id'];
            if ($cell_content['page'] == 'current_page') {
                global $post;
                $content = render_view_template($content_template_id, $post );
            } elseif ($cell_content['page'] == 'this_page') {
                $post = get_post( $cell_content['selected_post'] );
                $content = render_view_template($content_template_id, $post );
            }
        } else {

            if (isset($WPV_templates)) {
                remove_filter('the_content', array($WPV_templates, 'the_content'), 1, 1);
            }

            $content = '';
            if( $target->is_layout_argument_set( 'post-content-callback' ) && function_exists( $target->get_layout_arguments( 'post-content-callback' ) ) ) {

                global $wp_query;

                // in case of issue uncomment this line
                //$wp_query->current_post = -1;

                // prevent any other override to bother
                remove_all_actions( 'loop_start' );
                remove_all_actions('loop_end' );

                if ($cell_content['page'] == 'this_page') {
                    // need to switch the post.
                    $original_query = isset( $wp_query ) ? clone $wp_query : null;
                    $original_post = isset( $post ) ? clone $post : null;
                    $original_authordata = isset ($authordata) ? clone $authordata : null;
                    $original_id = $id;


                    $wp_query = new WP_Query(array('post_type' => 'any',
                                                    'ignore_sticky_posts' => true,
                                                   'post__in' => array( $cell_content['selected_post'] ) ) );


                    }

                ob_start();

                call_user_func( $target->get_layout_arguments( 'post-content-callback' ) );
                $content = ob_get_clean();

                if ($cell_content['page'] == 'this_page') {
                    // restore the global wp_query.
                    $wp_query = isset( $original_query ) ? clone $original_query : null;
                    $post = isset( $original_post ) ? clone $original_post : null;
                    $authordata = isset( $original_authordata ) ? clone $original_authordata : null;
                    $id = $original_id;
                }

            } else {

                if ( $cell_content['page'] == 'current_page' && is_object($post) && property_exists($post, 'post_content')) {
                    $content = apply_filters('the_content', $post->post_content);
                } elseif ($cell_content['page'] == 'this_page') {
                    $other_post = get_post($cell_content['selected_post']);
                    if ( is_object($other_post) && property_exists($other_post, 'post_content') ) {
                        $content = apply_filters('the_content', $other_post->post_content);
                    }
                }

            }

            if (isset($WPV_templates)) {
                add_filter('the_content', array($WPV_templates, 'the_content'), 1, 1);
            }


        }
        $target->cell_content_callback($content, $this);

        if ($cell_content['page'] == 'current_page') {
            do_action('ddl-layouts-render-end-post-content');
        }

    }

}

class WPDD_layout_cell_post_content_factory extends WPDD_layout_cell_factory{

    function __construct() {

    }

    public function build($name, $width, $css_class_name = '', $content = null, $css_id, $tag) {
        return new WPDD_layout_cell_post_content($name, $width, $css_class_name, $content, $css_id, $tag);
    }

    public function get_cell_info($template) {
        $template['cell-image-url'] = DDL_ICONS_SVG_REL_PATH.'post-content.svg';
        $template['preview-image-url'] = DDL_ICONS_PNG_REL_PATH . 'post-content_expand-image.png';
        $template['name'] = sprintf( __('Post', 'ddl-layouts'), '' );
        $template['description'] = __('Display the content of a page, post or custom type using styling from the theme.', 'ddl-layouts');
        $template['button-text'] = __('Assign Post content Box', 'ddl-layouts');
        $template['dialog-title-create'] = __('Create a new Post content Cell', 'ddl-layouts');
        $template['dialog-title-edit'] = __('Edit Post content Cell', 'ddl-layouts');
        $template['dialog-template'] = $this->_dialog_template();
        $template['category'] = sprintf( __('%s elements', 'ddl-layouts'), WPDD_Layouts::get_theme_name() );
        $template['has_settings'] = false;
        return $template;
    }

    public function get_editor_cell_template() {
        ob_start();
        ?>
            <div class="cell-content">
                <p class="cell-name">{{ name }}</p>
                    <div class="cell-preview">
                        <#
                            if (content) {
                                var preview = DDLayout.post_content_cell.get_preview(content,
                                            '<?php _e('Displays the content of the current page', 'ddl-layouts'); ?>',
                                            '<?php _e('Displays the content of %s', 'ddl-layouts'); ?>',
                                            '<?php _e('Loading', 'ddl-layouts'); ?>...',
                                            '<?php echo WPDDL_RES_RELPATH . '/images/cell-icons/post-content-preview.svg'; ?>',
                                            this );
                                print( preview );
                            }
                        #>
                    </div>
            </div>
        <?php
        return ob_get_clean();
    }

    private function _dialog_template() {

        ob_start();
        ?>
        <ul class="ddl-form">
            <li>
                <fieldset>
                    <legend><?php _e('Display content for:', 'ddl-layouts'); ?></legend>
                    <div class="fields-group">
                        <ul>
                            <li>
                                <label class="post-content-page">
                                    <input type="radio" name="<?php the_ddl_name_attr('page'); ?>" value="current_page" checked="checked"/>
                                    <?php _e('Current page', 'ddl-layouts'); ?>
                                </label>
                            </li>
                            <li>
                                <label class="post-content-page">
                                    <input type="radio" name="<?php the_ddl_name_attr( 'page' ); ?>" value="this_page" />
                                    <?php _e( 'A specific page:', 'ddl-layouts' ); ?>
                                </label>
                            </li>
                            <li id="js-post-content-specific-page">
                                <select name="<?php the_ddl_name_attr( 'post_content_post_type' ); ?>" class="js-ddl-post-content-post-type" data-nonce="<?php echo wp_create_nonce( 'ddl-post-content-post-type-select' ); ?>">
                                    <option value="ddl-all-post-types"><?php _e('All post types', 'ddl-layouts'); ?></option>
                                    <?php
                                    $post_types = get_post_types( array( 'public' => true ), 'objects' );
                                    foreach ( $post_types as $post_type ) {
                                        $count_posts = wp_count_posts($post_type->name);
                                        if ($count_posts->publish > 0) {
                                            ?>
                                                <option value="<?php echo $post_type->name; ?>"<?php if($post_type->name == 'page') { echo ' selected="selected"';} ?>>
                                                    <?php echo $post_type->labels->singular_name; ?>
                                                </option>
                                            <?php
                                        }
                                    }
                                    ?>
                                </select>
                                <?php
                                    $keys = array_keys( $post_types );
                                    $post_types_array = array_shift(  $keys  );
                                    $this->show_posts_dropdown( $post_types_array, get_ddl_name_attr( 'selected_post' ) );
                                ?>
                            </li>
                        </ul>
                    </div>
                </fieldset>
            </li>


        </ul>
        <?php ddl_add_help_link_to_dialog(WPDLL_POST_CONTENT_CELL, __('Learn about the Post Content cell', 'ddl-layouts')); ?>
        <?php wp_nonce_field( 'wpv-ct-inline-edit', 'wpv-ct-inline-edit' ); ?>

        <?php
        return ob_get_clean();
    }


    public function enqueue_editor_scripts() {
        wp_register_script( 'wp-post-content-editor', ( WPDDL_GUI_RELPATH . "editor/js/post-content-cell.js" ), array('jquery'), null, true );
        wp_enqueue_script( 'wp-post-content-editor' );

        wp_localize_script('wp-post-content-editor', 'DDLayout_post_content_strings', array(
                'current_post' => __('This cell will display the content of the post which uses the layout.', 'ddl-layouts'),
                'this_post' => __('This cell will display the content of a specific post.', 'ddl-layouts'),
                )
        );
    }

    private function show_posts_dropdown($post_type, $name, $selected = 0) {
        if ($post_type == 'ddl-all-post-types') {
            $post_type = 'any';
        }

        $attr = array('name'=> $name,
                      'post_type' => $post_type,
                      'show_option_none' => __('None', 'ddl-layouts'),
                      'selected' => $selected);


        add_filter('posts_clauses_request', array($this, 'posts_clauses_request_filter'), 10, 2 );

        $defaults = array(
            'depth' => 0, 'child_of' => 0,
            'selected' => $selected, 'echo' => 1,
            'name' => 'page_id', 'id' => '',
            'show_option_none' => '', 'show_option_no_change' => '',
            'option_none_value' => ''
        );
        $r = wp_parse_args( $attr, $defaults );
        extract( $r, EXTR_SKIP );

        $pages = get_posts(array('posts_per_page' => -1, 'post_type' => $post_type, 'suppress_filters' => false));
        $output = '';
        // Back-compat with old system where both id and name were based on $name argument
        if ( empty($id) )
            $id = $name;

        if ( ! empty($pages) ) {
            $output = "<select name='" . esc_attr( $name ) . "' id='" . esc_attr( $id ) . "' data-post-type='" . esc_attr( $post_type ). "'>\n";
            if ( $show_option_no_change )
                $output .= "\t<option value=\"-1\">$show_option_no_change</option>";
            if ( $show_option_none )
                $output .= "\t<option value=\"" . esc_attr($option_none_value) . "\">$show_option_none</option>\n";
            $output .= walk_page_dropdown_tree($pages, $depth, $r);
            $output .= "</select>\n";
        }

        echo $output;

        remove_filter('posts_clauses_request', array($this, 'posts_clauses_request_filter'), 10, 2 );

    }

    function posts_clauses_request_filter($pieces, $query ) {
        global $wpdb;
        // only return the fields required for the dropdown.
        $pieces['fields'] = "$wpdb->posts.ID, $wpdb->posts.post_parent, $wpdb->posts.post_title";

        return $pieces;
    }


}

add_filter('dd_layouts_register_cell_factory', 'dd_layouts_register_cell_post_content_factory');
function dd_layouts_register_cell_post_content_factory($factories) {
    $factories['cell-post-content'] = new WPDD_layout_cell_post_content_factory;
    return $factories;
}


add_action('wp_ajax_ddl_post_content_get_post_title', 'ddl_post_content_get_post_title_callback');
function ddl_post_content_get_post_title_callback() {
    if ( !isset($_POST["wpnonce"]) || !wp_verify_nonce($_POST["wpnonce"], 'ddl_layout_view_nonce') ) die("Undefined Nonce.");

    global $wpdb;

    echo $wpdb->get_var("SELECT post_title FROM {$wpdb->posts} WHERE ID={$_POST['post_id']}");

    die();
}