init.php

<?php
/**
 * Plugin Name: WP Strip Naked
 * Plugin URI: http://
 * Description: Strips WordPress built in stuff down to it's bare essentials
 * Version: 0.5
 * Author: Franz Josef Kaiser
 * Author URI: http://unserkaiser.com
 * Text Domain: wp_strip_naked
 * Domain Path: /lang
 *
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU
 * General Public License version 2, as published by the Free Software Foundation.  You may NOT assume
 * that you can use any other version of the GPL.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
 * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 */

// Prevent loading this file directly - Busted!
defined( 'ABSPATH' ) OR exit;



/**
 * SETUP & INIT PLUGIN
 * Triggers on the "plugins_loaded" hook, as "muplugins_loaded" is too early
 */
include_once plugin_dir_path( __FILE__ ).'setup.php';
register_uninstall_hook( __FILE__, array( 'WP_Strip_Naked_Setup', 'on_uninstall' ) );
register_activation_hook( __FILE__, array( 'WP_Strip_Naked_Setup','on_activate' ) );

add_action( 'plugins_loaded', array( 'WP_Strip_Naked', 'init' ) );

/**
 * Strip all of WP down to naked
 *
 * @author Franz Josef Kaiser
 * @since 0.1
 * @version 0.1
 * @package WordPress Strip Naked
 * @subpackage
 */
class WP_Strip_Naked
{
	protected static $instance;
	/**
	 * Container for Plugin Settings
	 *
	 * @since 0.3
	 * @var
	 */
	public $options;


	/**
	 * Handler for the action 'init'. Instantiates this class.
	 * @return void
	 */
	public static function init()
	{
		is_null( self :: $instance ) AND self :: $instance = new self;
		return self :: $instance;
	}


	public function __construct()
	{
		$this->setup_options();

		add_action( 'init', array( $this, 'capital_p_bangit' ) );

		add_action( 'init', array( $this, 'taxonomies' ) );
		add_action( 'init', array( $this, 'post_types' ) );

		add_action( 'wp_before_admin_bar_render',  array( $this, 'admin_bar' ) );

		add_filter( 'parent_file', array( $this, 'admin_menu' ) );

		add_action( 'wp_dashboard_setup', array( $this, 'dashboard_widgets' ) );

		add_filter( 'admin_footer_text', '__return_false' );
		add_filter( 'update_footer', '__return_false', 11 );

		add_action( 'init', array( $this, 'feed' ) );

		add_action( 'admin_print_styles-options.php', array( $this, 'styles' ), 20 );
		add_action( 'all_admin_notices', array( $this, 'note' ), 20 );

		# add_filter( 'page_template', array( $this, 'page_template' ), 10, 1 );
		# add_filter( 'comments_popup_template', array( $this, 'comments_popup_template' ), 10, 1 );
	}


	public function setup_options()
	{
		$this->options['feed']  = get_option( 'strip_feed' );
		$this->options['pages']	= get_option( 'strip_pages' );
	}


	/**
	 * Remove the Wordpress > WordPress filter
	 *
	 * @since 0.4
	 *
	 * @return void
	 */
	public function capital_p_bangit()
	{
		remove_filter( 'the_title',    'capital_P_dangit', 11 );
		remove_filter( 'the_content',  'capital_P_dangit', 11 );
		remove_filter( 'comment_text', 'capital_P_dangit', 31 );
	}


	/**
	 * Adds a new "WP Strip Naked" Settings Section above the all settings page
	 *
	 * @since 0.3
	 *
	 * @return string $html;
	 */
	public function note()
	{
		global $pagenow;

		if ( 'options.php' !== $pagenow )
			return;

		// Add new separate Strip Settings section
		screen_icon();
		$html  = '<div class="wrap"><h2>';
		$html .= __( 'WP Strip Naked Settings', '' );
		$html .= '</h2>';
 		$html .= "<p>";
		$html .= sprintf( __( 'Plugin settings are highlighted in %sblue', '' ), '<span id="strip_note">' );
		$html .= "</span>.</p>";

		print $html;
	}


	/**
	 * Adds a Note to the strip settings section
	 *
	 * @since 0.3
	 *
	 * @return void
	 */
	public function styles()
	{
		echo <<<EOF
<style type="text/css">#strip_note,#strip_feed,#strip_pages {color:#fff;background:#009ee0;}</style>
EOF;
	}


	public function page_template( $templates )
	{
		$templates = array();
		return $templates;
	}


	public function comments_popup_template( $templates )
	{
		$templates = array();
		return $templates;
	}


	/**
	 * Removes all built in taxonomies
	 * Leaves only the "nav-menu" taxonomy
	 *
	 * @since 0.1
	 *
	 * @return void
	 */
	public function taxonomies()
	{
		global $wp_taxonomies;

		unset( $wp_taxonomies['category'] );
		unset( $wp_taxonomies['post_tag'] );
		unset( $wp_taxonomies['link_category'] );
		unset( $wp_taxonomies['post_format'] );
	}


	/**
	 * Removes the by default built in post types of "Post" & "Page"
	 *
	 * @since 0.1
	 *
	 * @return void
	 */
	public function post_types()
	{
		global $wp_post_types;

		unset( $wp_post_types['post'] );

		if ( 1 != $this->options['pages'] )
			unset( $wp_post_types['page'] );
	}


	/**
	 * Removes all admin bar items
	 * Leaves only the site name that can be used to access the public view
	 *
	 * @since 0.1
	 *
	 * @return void
	 */
	public function admin_bar()
	{
		global $wp_admin_bar;

		if ( ! is_admin_bar_showing() )
			return;

		$wp_admin_bar->remove_menu( 'wp-logo' );
		$wp_admin_bar->remove_menu( 'comments' );
		$wp_admin_bar->remove_menu( 'my-account' );
		$wp_admin_bar->remove_menu( 'appearance' );
		$wp_admin_bar->remove_menu( 'new-content' );
		$wp_admin_bar->remove_menu( 'my-account-with-avatar' );
	}


	/**
	 * Removes all menu & submenu items for the admin menu
	 * for stuff that's built in
	 * Also removes all settings pages and replaces them
	 * with an "All Settings" page
	 *
	 * @since 0.1
	 *
	 * @param string $parent_file
	 * @return string $parent_file
	 */
	public function admin_menu( $parent_file )
	{
		global $menu, $submenu;

		# >>>> Sub menu items
			// Add New Post
			remove_submenu_page( 'edit.php', 'post-new.php' );

			// Add New Link
			remove_submenu_page( 'link-manager.php', 'link-add.php' );
			// Link Taxonomy
			remove_submenu_page( 'link-manager.php', 'edit-tags.php?taxonomy=link_category' );

			// Add New Page
			if ( 1 != $this->options['pages'] )
				remove_submenu_page( 'edit.php?post_type=page', 'post-new.php?post_type=page' );

			// Theme Editor
			remove_submenu_page( 'themes.php', 'theme-editor.php' );
			// Plugins Editor
			remove_submenu_page( 'plugins.php', 'plugin-editor.php' );

			// Settings General
			remove_submenu_page( 'options-general.php', 'options-general.php' );
			// Settings
			remove_submenu_page( 'options-general.php', 'options-writing.php' );
			// Settings
			remove_submenu_page( 'options-general.php', 'options-reading.php' );
			// Settings
			remove_submenu_page( 'options-general.php', 'options-discussion.php' );
			// Settings
			remove_submenu_page( 'options-general.php', 'options-media.php' );
			// Settings
			remove_submenu_page( 'options-general.php', 'options-privacy.php' );
			// Settings
			remove_submenu_page( 'options-general.php', 'options-permalink.php' );
		# <<<< Sub menu items

		# >>>> Main menu items
			// Posts
			remove_menu_page( 'edit.php' );
			// Links
			remove_menu_page( 'link-manager.php' );
			// Pages
			if ( 1 != $this->options['pages'] )
				remove_menu_page( 'edit.php?post_type=page' );
			// Comments
			remove_menu_page( 'edit-comments.php' );
		# <<<< Main menu items

		// Add all options page instead
		add_submenu_page(
			 'options-general.php'
			,__( 'All Options' )
			,__( 'All Settings' )
			,'manage_options'
			,'options.php'
		);
		$opt_first = reset( array_keys( $submenu[ 'options-general.php' ] ) );
		// (Re)move
		foreach ( $submenu[ 'options-general.php' ] as $i => $item )
		{
			if ( 'options.php' == $item[2] )
			{
				unset( $submenu[ 'options-general.php' ][ $i ] );
				$submenu[ 'options-general.php' ][ $opt_first - 1 ] = $item;
			}
		}
		// Sort
		sort( $submenu[ 'options-general.php' ] );

		return $parent_file;
	}


	/**
	 * Removes all default meta boxes from the dashboard
	 * Leaves only "Incoming Links"
	 *
	 * @since 0.1
	 *
	 * @return void
	 */
	public function dashboard_widgets()
	{
		remove_meta_box( 'dashboard_browser_nag',     'dashboard', 'normal' );
		remove_meta_box( 'dashboard_right_now',       'dashboard', 'normal' );
		remove_meta_box( 'dashboard_recent_comments', 'dashboard', 'normal' );
		remove_meta_box( 'dashboard_plugins',         'dashboard', 'normal' );

		remove_meta_box( 'dashboard_quick_press',     'dashboard', 'side' );
		remove_meta_box( 'dashboard_recent_drafts',   'dashboard', 'side' );
		remove_meta_box( 'dashboard_primary',         'dashboard', 'side' );
		remove_meta_box( 'dashboard_secondary',       'dashboard', 'side' );
	}


	/**
	 * Disables the feed on demand
	 *
	 * @since 0.3
	 *
	 * @return void
	 */
	public function feed()
	{
		if ( 1 != $this->options['feed'] )
			return;

		add_action( 'do_feed',      'disable_feed_cb', 1 );
		add_action( 'do_feed_rdf',  'disable_feed_cb', 1 );
		add_action( 'do_feed_rss',  'disable_feed_cb', 1 );
		add_action( 'do_feed_rss2', 'disable_feed_cb', 1 );
		add_action( 'do_feed_atom', 'disable_feed_cb', 1 );
	}


	/**
	 * Callback fn to disable the feed
	 * Replaces it with a notice to visit the site
	 *
	 * @since 0.2
	 *
	 * @return void
	 */
	function disable_feed_cb()
	{
		$url = get_bloginfo( 'url' );
		wp_die(
			 sprintf(
			 	 __( 'Please visit our %s.' )
			 	,"<a href='{$url}'>site</a>"
			 )
			,__( 'No Feed available' )
		);
	}
}