MrBenGriffin/static_view_management

## static_view_management
/*
* !! The HTML files in the code are at the bottom of gist.
*/

/**************** VERSION 1 *******************
 * (1 php file)
 * File 'main_v1.php', simple static management
 * Loads in a view and nav fragment, and returns the resulting view.
**/
<?php
    $v= new NView('main.xml');
    $n= new NView('nav_1.xml');
    $v->set("//*[@data-xp='nav']/child-gap()",$n);
    $v->show(true);
?>

/**************** VERSION 2 *******************
 * (2 php files + Uses HeaderNav from v2)

/** File 'main_v2.php', simple static management
 * Loads in a view, sets nav. and returns the resulting view.
**/
<?php
    $v= new NView('main.xml');
    $v->set("//*[@data-xp='nav']/child-gap()",HeaderNav::view());
    $v->show(true);
?>

/*
 * File 'header_nav_v2.php', simple handler.
 * Loads nav fragment, and returns it
**/
<?php
    class HeaderNav {
        public static function view() {
            $n= new NView('nav_1.xml');
            //Modify nav dynamically here if needs be..
            //Also compose sub-fragments here ...
            return $n;
        }
    }
?>

/**************** VERSION 3 *******************
 * (2 php files + Uses HeaderNav from v2)
 * Version 3 shows container management.
 * So with fragment management we can pass upstream
 * aspects of our control that need to be dealt with
 * by upstream logic.
 */


/** File 'home_v3.php', with container management.
 * Loads in a home page view and passes rest over to container management.
**/
<?php
    $v= new NView('home.xml');
    //one can do non-global dynamic stuff here..
    $page_fn= function($has_ck) use (&$v) {
        //Do anything SPECIFIC TO HOME PAGE here that
        //requires security, or whatever as set in core.
        //Here we are testing a cookie status as an example
        if($has_ck) {
            $message="You have a cookie! ";
        } else {
            $message="You want a cookie? ";
        }
        $v->set("//*[@data-xp='ck_msg']",$cookie);

        //Alternatively, one can switch out the messages..
        $del = $has_ck ? "y" : "n";
        $v->set("//*[@data-xp='ck_del_".$del."']"); //delete unwanted message..
        return $v;      //return our composed view.
    };
    Core::page($page_fn);
?>

/*
 * File 'core_v3.php', container management class.
 */
<?php
class Core {
/*
 * static page()
 * Do anything to main file here such as sign-in/security/specials
 *  that are shared across all pages.
 */
    static function page(&$fn) {
        $mv = new NView("main.xml");
        //Do security, session stuff.. here we just test for a cookie as an example.
        $mv->set("//*[@data-xp='main_view']",$fn(static::ck()));
        $mv->set("//*[@data-xp='nav']/child-gap()",HeaderNav::view());
        $mv->show(true);
    }

    static function ck() {
 		return isset($_COOKIE["xsession"]);
    }
}
?>

/**************** HTML FILES *******************/

/** File 'main.xml', the core page. **/
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
  <head><title>Main</title></head>
  <body>
    <header><nav data-xp="nav" /></header>
    <main data-xp="main" />
    <footer data-xp="footer" />
  </body>
</html>

/** File 'nav.xml', initial static navigation fragment  **/
<!DOCTYPE ul>
<ul class="navigation" xmlns="http://www.w3.org/1999/xhtml">
    <li><a href="/home">Home</a></li>
    <li><a href="/catalogue">Catalogue</a></li>
    <li><a href="/about-us">About Us</a></li>
    <li><a href="/register">Register</a></li>
</ul>

/** File 'home.xml': Home Page fragment. Used in v3 */
<!DOCTYPE article>
<article xmlns="http://www.w3.org/1999/xhtml">
    <h2>Welcome to the Home Page</h2>
    <h4><span data-xp="ck_msg">Placeholder cookie message.</span></h4>
    <span data-xp="ck_del_n">You have a cookie!</span>
    <span data-xp="ck_del_y">You want a cookie?</span>
</article>
	/*
	* !! The HTML files in the code are at the bottom of gist.
	*/

	/************** VERSION 1 *****************
	* (1 php file)
	* File 'main_v1.php', simple static management
	* Loads in a view and nav fragment, and returns the resulting view.
	**/
	<?php
	$v= new NView('main.xml');
	$n= new NView('nav_1.xml');
	$v->set("//*[@data-xp='nav']/child-gap()",$n);
	$v->show(true);
	?>

	/************** VERSION 2 *****************
	* (2 php files + Uses HeaderNav from v2)

	/** File 'main_v2.php', simple static management
	* Loads in a view, sets nav. and returns the resulting view.
	**/
	<?php
	$v= new NView('main.xml');
	$v->set("//*[@data-xp='nav']/child-gap()",HeaderNav::view());
	$v->show(true);
	?>

	/*
	* File 'header_nav_v2.php', simple handler.
	* Loads nav fragment, and returns it
	**/
	<?php
	class HeaderNav {
	public static function view() {
	$n= new NView('nav_1.xml');
	//Modify nav dynamically here if needs be..
	//Also compose sub-fragments here ...
	return $n;
	}
	}
	?>

	/************** VERSION 3 *****************
	* (2 php files + Uses HeaderNav from v2)
	* Version 3 shows container management.
	* So with fragment management we can pass upstream
	* aspects of our control that need to be dealt with
	* by upstream logic.
	*/


	/** File 'home_v3.php', with container management.
	* Loads in a home page view and passes rest over to container management.
	**/
	<?php
	$v= new NView('home.xml');
	//one can do non-global dynamic stuff here..
	$page_fn= function($has_ck) use (&$v) {
	//Do anything SPECIFIC TO HOME PAGE here that
	//requires security, or whatever as set in core.
	//Here we are testing a cookie status as an example
	if($has_ck) {
	$message="You have a cookie! ";
	} else {
	$message="You want a cookie? ";
	}
	$v->set("//*[@data-xp='ck_msg']",$cookie);

	//Alternatively, one can switch out the messages..
	$del = $has_ck ? "y" : "n";
	$v->set("//*[@data-xp='ck_del_".$del."']"); //delete unwanted message..
	return $v; //return our composed view.
	};
	Core::page($page_fn);
	?>

	/*
	* File 'core_v3.php', container management class.
	*/
	<?php
	class Core {
	/*
	* static page()
	* Do anything to main file here such as sign-in/security/specials
	* that are shared across all pages.
	*/
	static function page(&$fn) {
	$mv = new NView("main.xml");
	//Do security, session stuff.. here we just test for a cookie as an example.
	$mv->set("//*[@data-xp='main_view']",$fn(static::ck()));
	$mv->set("//*[@data-xp='nav']/child-gap()",HeaderNav::view());
	$mv->show(true);
	}

	static function ck() {
	return isset($_COOKIE["xsession"]);
	}
	}
	?>

	/************** HTML FILES *****************/

	/ File 'main.xml', the core page. /
	<!DOCTYPE html>
	<html xmlns="http://www.w3.org/1999/xhtml">
	<head><title>Main</title></head>
	<body>
	<header><nav data-xp="nav" /></header>
	<main data-xp="main" />
	<footer data-xp="footer" />
	</body>
	</html>

	/ File 'nav.xml', initial static navigation fragment /
	<!DOCTYPE ul>
	<ul class="navigation" xmlns="http://www.w3.org/1999/xhtml">
	<li><a href="/home">Home</a></li>
	<li><a href="/catalogue">Catalogue</a></li>
	<li><a href="/about-us">About Us</a></li>
	<li><a href="/register">Register</a></li>
	</ul>

	/** File 'home.xml': Home Page fragment. Used in v3 */
	<!DOCTYPE article>
	<article xmlns="http://www.w3.org/1999/xhtml">
	<h2>Welcome to the Home Page</h2>
	<h4><span data-xp="ck_msg">Placeholder cookie message.</span></h4>
	<span data-xp="ck_del_n">You have a cookie!</span>
	<span data-xp="ck_del_y">You want a cookie?</span>
	</article>