child-pages-shortcode.php

<?php
/*
Plugin Name: Child Pages Shortcode
Author: Takayuki Miyauchi
Plugin URI: https://github.com/miya0001/child-pages-shortcode
Description: You can use shortcode for display child pages from the page.
Version: 1.9.3
Author URI: http://wpist.me/
Domain Path: /languages
Text Domain: child-pages-shortcode
*/

$child_pages_shortcode = new Child_Pages_Shortcode();
$child_pages_shortcode->register();

class Child_Pages_Shortcode {

private $ver = '1.1.4';

function register()
{
	add_action('plugins_loaded', array($this, 'plugins_loaded'));
}

function plugins_loaded()
{
	add_shortcode("child_pages", array($this, "shortcode"));
	add_action("init", array($this, "init"));
	add_action("wp_enqueue_scripts", array($this, "wp_enqueue_scripts"));
}

public function init()
{
	add_post_type_support('page', 'excerpt');
}

public function wp_enqueue_scripts()
{
	/*
	 * Filter the stylesheet URI
	 *
	 * @since none
	 * @param string $stylesheet_uri URI to the stylesheet.
	 */
	$css = apply_filters(
		"child-pages-shortcode-stylesheet",
		plugins_url("css/child-pages-shortcode.min.css", __FILE__)
	);

	wp_enqueue_style(
		'child-pages-shortcode-css',
		$css,
		array(),
		$this->ver,
		'all'
	);

	/*
	 * Filter the JavaScript URI
	 *
	 * @since none
	 * @param string $javascript_uri URI to the JavaScript.
	 */
	$js = apply_filters(
		"child-pages-shortcode-js",
		plugins_url("js/child-pages-shortcode.min.js", __FILE__)
	);

	wp_enqueue_script(
		'child-pages-shortcode',
		$js,
		array('jquery'),
		$this->ver,
		false
	);
}

public function shortcode($p, $template = null)
{
	$default = apply_filters( 'child_pages_shortcode_defaults', array(
		'id' => get_the_ID(),
		'size' => 'thumbnail',
		'width' => '50%',
	) );
  $p = shortcode_atts( $default, $p, 'child_pages' );

	if( !isset($p['id']) || !intval($p['id']) ){
		$p['id'] = get_the_ID();
	}

	if (!isset($p['size']) || !$p['size']) {
		$p['size'] = 'thumbnail';
	}

	if (!isset($p['width']) || !intval($p['width'])) {
		$p['width'] = "50%";
	}

	if (!isset($p['disable_shortcode']) || !$p['disable_shortcode']) {
		add_filter("child-pages-shortcode-output", "do_shortcode");
	}

	return $this->display($p, $template);
}

private function display($p, $block_template)
{
	global $post;

	$html = '';

	if ($block_template) {
		$template = $block_template;
		$template = str_replace('<p>', '', $template);
		$template = str_replace('</p>', '', $template);
		/*
		 * Filter the temaplate
		 *
		 * @since none
		 * @param string $template Template HTML.
		 */
		$template = apply_filters(
			'child-pages-shortcode-template',
			$template,
			$p
		);
	} else {
		/*
		 * Filter the temaplate
		 *
		 * @since none
		 * @param string $template Template HTML.
		 */
		$template = apply_filters(
			'child-pages-shortcode-template',
			$this->get_template(),
			$p
		);

		$container_class = 'child_pages child_pages-' . esc_attr( $p['size'] );
		$container_class = apply_filters( 'child_pages_shortcode_container_class', $container_class );
		$html = sprintf(
			'<div class="%s">',
			$container_class
		);
	}

	$args = array(
		'post_status' => 'publish',
		'post_type' => 'page',
		'post_parent' => $p['id'],
		'orderby' => 'menu_order',
		'order' => 'ASC',
		'nopaging' => true,
	);

	/*
	 * Filter the query args for the get_posts()
	 *
	 * @since none
	 * @param array $args Query args. See http://codex.wordpress.org/Class_Reference/WP_Query#Parameters.
	 */
	$args = apply_filters('child-pages-shortcode-query', $args, $p);

	$pages = get_posts($args);
	foreach ($pages as $post) {
		setup_postdata($post);
		/*
		 * Filter the $post data.
		 *
		 * @since none
		 * @param object $post Post data.
		 */
		$post = apply_filters('child_pages_shortcode_post', $post);
		$url = get_permalink($post->ID);
		$img = get_the_post_thumbnail($post->ID, $p['size']);
		$img = preg_replace( '/(width|height)="\d*"\s/', "", $img);
		$tpl = $template;
		$tpl = str_replace('%width%', esc_attr($p['width']), $tpl);
		$tpl = str_replace('%post_id%', intval($post->ID), $tpl);
		$tpl = str_replace('%post_title%', $post->post_title, $tpl);
		$tpl = str_replace('%post_url%', esc_url($url), $tpl);
		$tpl = str_replace('%post_thumb%', $img, $tpl);
		if (isset($p['disabled_excerpt_filters']) && $p['disabled_excerpt_filters']) {
			$tpl = str_replace('%post_excerpt%', $post->post_excerpt, $tpl);
		} else {
			$tpl = str_replace('%post_excerpt%', get_the_excerpt(), $tpl);
		}
		$tpl = str_replace('%post_content%', get_the_content(), $tpl);
		$html .= $tpl;
	}

	wp_reset_postdata();

	if (!$block_template) {
		$html .= '</div>';
	}

	/*
	 * Filter the output.
	 *
	 * @since none
	 * @param string $html	 Output of the child pages.
	 * @param array  $pages	An array of child pages.
	 * @param string $template Template HTML for output.
	 */
	return apply_filters("child-pages-shortcode-output", $html, $pages, $template);
}

private function get_template()
{
	$html = "\n";
	$style = apply_filters( 'child_pages_shortcode_template_style', 'width:%width%; max-width:100%;' );
	$class = apply_filters( 'child_pages_shortcode_template_class', 'child_page' );
	$html .= '<div id="child_page-%post_id%" class="' . $class . '" style="' . $style  . '">';
	$html .= '<div class="child_page-container">';
	$html .= '<div class="post_thumb"><a href="%post_url%">%post_thumb%</a></div>';
	$html .= '<div class="post_content">';
	$html .= '<h4><a href="%post_url%">%post_title%</a></h4>';
	$html .= '<div class="post_excerpt">%post_excerpt%</div>';
	$html .= '</div><!-- .post_content  -->';
	$html .= '</div><!-- .child_page-container -->';
	$html .= '</div><!-- #child_page-%post_id%" -->';
	$html .= "\n";

	if ($tpl = get_post_meta(get_the_ID(), 'child-pages-template', true)) {
		$html = $tpl;
	}

	return apply_filters( 'child_pages_shortcode_template', $html );
}

} // end class

// eof