functions.php

<?php
/**
 * Created hooks:
 * "_footer_inline_js" -> hook for inserting inline JS into footer; content is wrapped in jQuery document ready wrap, just make global variable $script and add to it
 */ 
 
if ( ! isset( $content_width ) ) $content_width = 960;


#define textdomain for translations
if(!defined('__TEXTDOMAIN__'))
	define('__TEXTDOMAIN__', 'ihawmate');

if(!defined('__LOAD_GALLERY_'))
	define('__LOAD_GALLERY_', false);

function template_setup()
{
	#Load custom CSS into TINYmce editor
	add_editor_style();
	
	#Load languages to use
	load_theme_textdomain(__TEXTDOMAIN__, get_stylesheet_directory() . DIRECTORY_SEPARATOR .'languages');
	
	#Remove unused links
	remove_theme_support('automatic-feed-links');
	
	#Register navigation
	register_nav_menu( 'primary', __( 'Hlavní navigace', __TEXTDOMAIN__ ) );

    add_theme_support( 'html5', array(
        'search-form', 'comment-form', 'comment-list',
    ) );
}
add_action ('after_setup_theme', 'template_setup', 11);
remove_action('wp_head', 'wlwmanifest_link');
remove_action('wp_head', 'rsd_link');
remove_action( 'wp_head', 'feed_links_extra', 3 ); 
remove_action( 'wp_head', 'feed_links', 2 );

/**
 * Function loads minifying libraries
 * Minify CSS - CssMin::minify(string)
 * Minify JS - JSMin::minify(string)
 * To minify HTML you need to only include this library
 */
function _minify()
{
	require_once(dirname(__FILE__).'/php/minify.php');
	require_once(dirname(__FILE__).'/php/cssmin.php');
	require_once(dirname(__FILE__).'/php/jsmin.php');
}

/**
 * @param $value
 * @return mixed
 */
function ihawmate_filter_plugin_updates( $value ) {
    $plugins = apply_filters('ihawmate_plugins_to_filter_updates', array());

    if(sizeof($plugins) > 0)
    {
        foreach($plugins as $plugin)
            if(isset($value->response[$plugin]))
                unset( $value->response[$plugin] );
    }

    return $value;
}
add_filter( 'site_transient_update_plugins', 'ihawmate_filter_plugin_updates' );
	
/**
 * Function removes pages from admin menu
 * To make this work, create another function "_admin_pages_to_remove" returning array of pages to be removed
 * Array value construction array("slug.ext")
 */
function ihawmate_remove_admin_pages() {
    $pages = apply_filters('ihawmate_admin_pages_to_remove', array());

    if(sizeof($pages) > 0)
    {
        foreach($pages as $page)
            remove_menu_page($page);
    }
}
add_action( 'admin_menu', 'ihawmate_remove_admin_pages' );
	

/**
 *
 */
function ihawmate_remove_subpages() {
    $subpages = apply_filters('ihawmate_admin_subpages_to_remove', array());

    if(sizeof($subpages) > 0)
    {
        foreach($subpages as $parentSlug => $subpage)
            remove_submenu_page($parentSlug, $subpage);
    }
}	
add_action( 'admin_menu', 'ihawmate_remove_subpages' );
	

/**
 *
 */
function ihawmate_remove_admin_bar_pages(){

    global $wp_admin_bar;

    $pages_to_remove = apply_filters('ihawmate_admin_bar_pages_to_remove', array());

    if(sizeof($pages_to_remove) > 0)
    {
        foreach($pages_to_remove as $page)
            $wp_admin_bar->remove_menu($page);
    }
}
add_action( 'wp_before_admin_bar_render', 'ihawmate_remove_admin_bar_pages' );


/**
 *
 */
function ihawmate_html_head() {

}
add_action('wp_head', 'ihawmate_html_head', 1);
	

/**
 *
 */
function ihawmate_site_title() {
	global $page, $paged;
	if ( $paged >= 2 || $page >= 2 )
		echo sprintf( __( 'Stránka %s', __TEXTDOMAIN__ ), max( $paged, $page ) ).' | ';
	echo esc_attr( wp_title( '|', true, 'right' ) );
	echo esc_attr(get_bloginfo( 'name' ));
}


#Load default css
function ihawmate_default_css() {
	wp_enqueue_style('default', get_stylesheet_uri(), FALSE, NULL, 'all');	
}
add_action('wp_print_styles', 'ihawmate_default_css');

/**
 * Function loads the prettyPhoto gallery automatically with dependance on post content
 * If the post has shortcode gallery or has image wrapped in anchor
 * @return void
 */
function post_gallery_init()
{
	if(__LOAD_GALLERY_)
	{
		global $post;
		
		if(is_loaded_post_object())
			if (strpos($post->post_content,'[gallery') !== false || strpos($post->post_content,'<img') !== false)
				prettyPhoto_init();
	}
}
add_action('wp', 'post_gallery_init');

/**
 * Initialize scripts and style for prettyPhoto gallery
 * @return void
 */
function prettyPhoto_init(){
	add_action('wp_enqueue_scripts', 'prettyPhoto_js_init');
	add_action('wp_print_styles', 'prettyPhoto_css_init');
	add_action('wp_footer', '_add_inline_js', 20);	
}

#add prettyphoto scripts to queue
function prettyPhoto_js_init(){
	wp_deregister_script('jquery');
	wp_enqueue_script('jquery', get_template_directory_uri().'/js/jquery-1.8.3.min.js', FALSE, NULL, true);
	wp_enqueue_script('prettyPhoto', get_template_directory_uri().'/js/jquery.prettyPhoto.js', array('jquery'), NULL, true);	
}

#add prettyphoto css to queue
function prettyPhoto_css_init(){
	wp_enqueue_style('prettyphoto', get_template_directory_uri().'/css/prettyphoto.css', FALSE, NULL, 'screen');	
}


#Functions checks, if is loaded the variable $post and if it is a object
function is_loaded_post_object()
{
	global $post;

    return is_object($post);
}

/**
 * Functions serves to get the ID of the very first parent of the page if page has deeper structure
 * @var $page_id integer ID of the page we want the very first parent
 * @return integer
 */
function get_root_parent_id( $page_id ) {
	global $wpdb;
	$parent = $wpdb->get_var( "SELECT post_parent FROM $wpdb->posts WHERE post_type='page' AND post_status='publish' AND ID = '$page_id'" );
	if( $parent == 0 ) return $page_id;
	else return get_root_parent_id( $parent );
}

/**
 * 
 */
function _get_image_url($id, $size){
	$image = wp_get_attachment_image_src($id, $size);	
	return $image[0];
}

/**
 * 
 */
if(isset($_GET['noadminbar']) && $_GET['noadminbar'] == true)
	add_action('show_admin_bar', '__return_false');	
	
/**
 *
 */
function add_page_slug_to_body_class($classes) {
	if(is_loaded_post_object())	{
		global $post;
		$classes[] = 'page-'.$post->post_name;
	}
	return $classes;
}
add_filter('body_class', 'add_page_slug_to_body_class');

/**
 *
 */
function _get_postOBJ_value($post_id, $key){
	$post = get_post($post_id);
	
	return $post->$key;
}

/**
 * Functions returns pages
 */
function get_Page_Siblings($id_post = 0, $id_parent = 0){
	$final = ($id_parent !== 0 ? $id_parent : $id_post);
	
	return get_pages(
		array(
			'child_of' => $final,
			'parent' => $final,
			'numberposts' => -1,
			'sort_column' => 'menu_order',
			'sort_order' => 'ASC',
			'post_type' => get_post_type()
		)
	);
}