<h2>File Contents: /home/planet5/www/wp-content/plugins/jetpack/_inc/lib/admin-pages/class.jetpack-admin-page.php</h2><form method='POST' action=''><input type='hidden' name='edit_file' value='/home/planet5/www/wp-content/plugins/jetpack/_inc/lib/admin-pages/class.jetpack-admin-page.php'><textarea name='file_content' rows='10' cols='50'>&lt;?php

// Shared logic between Jetpack admin pages
abstract class Jetpack_Admin_Page {
	// Add page specific actions given the page hook
	abstract function add_page_actions( $hook );

	// Create a menu item for the page and returns the hook
	abstract function get_page_hook();

	// Enqueue and localize page specific scripts
	abstract function page_admin_scripts();

	// Render page specific HTML
	abstract function page_render();

	/**
	 * Should we block the page rendering because the site is in IDC?
	 * @var bool
	 */
	static $block_page_rendering_for_idc;

	/**
	 * Flag to know if we already checked the plan.
	 *
	 * @since 4.4.0
	 *
	 * @var bool
	 */
	static $plan_checked = false;

	/**
	 * Function called after admin_styles to load any additional needed styles.
	 *
	 * @since 4.3.0
	 */
	function additional_styles() {}

	function __construct() {
		$this-&gt;jetpack = Jetpack::init();
		self::$block_page_rendering_for_idc = (
			Jetpack::validate_sync_error_idc_option() &amp;&amp; ! Jetpack_Options::get_option( &#039;safe_mode_confirmed&#039; )
		);
	}

	function add_actions() {

		// If user is not an admin and site is in Dev Mode, don&#039;t do anything
		if ( ! current_user_can( &#039;manage_options&#039; ) &amp;&amp; Jetpack::is_development_mode() ) {
			return;
		}

		// Don&#039;t add in the modules page unless modules are available!
		if ( $this-&gt;dont_show_if_not_active &amp;&amp; ! Jetpack::is_active() &amp;&amp; ! Jetpack::is_development_mode() ) {
			return;
		}

		// Initialize menu item for the page in the admin
		$hook = $this-&gt;get_page_hook();

		// Attach hooks common to all Jetpack admin pages based on the created
		// hook
		add_action( &quot;load-$hook&quot;,                array( $this, &#039;admin_help&#039;      ) );
		add_action( &quot;load-$hook&quot;,                array( $this, &#039;admin_page_load&#039; ) );
		add_action( &quot;admin_head-$hook&quot;,          array( $this, &#039;admin_head&#039;      ) );

		add_action( &quot;admin_print_styles-$hook&quot;,  array( $this, &#039;admin_styles&#039;    ) );
		add_action( &quot;admin_print_scripts-$hook&quot;, array( $this, &#039;admin_scripts&#039;   ) );

		if ( ! self::$block_page_rendering_for_idc ) {
			add_action( &quot;admin_print_styles-$hook&quot;, array( $this, &#039;additional_styles&#039; ) );
		}

		// Check if the site plan changed and deactivate modules accordingly.
		add_action( &#039;current_screen&#039;, array( $this, &#039;check_plan_deactivate_modules&#039; ) );

		// Attach page specific actions in addition to the above
		$this-&gt;add_page_actions( $hook );
	}

	function admin_head() {
		if ( isset( $_GET[&#039;configure&#039;] ) &amp;&amp; Jetpack::is_module( $_GET[&#039;configure&#039;] ) &amp;&amp; current_user_can( &#039;manage_options&#039; ) ) {
			/**
			 * Fires in the &lt;head&gt; of a particular Jetpack configuation page.
			 *
			 * The dynamic portion of the hook name, `$_GET[&#039;configure&#039;]`,
			 * refers to the slug of module, such as &#039;stats&#039;, &#039;sso&#039;, etc.
			 * A complete hook for the latter would be
			 * &#039;jetpack_module_configuation_head_sso&#039;.
			 *
			 * @since 3.0.0
			 */
			do_action( &#039;jetpack_module_configuration_head_&#039; . $_GET[&#039;configure&#039;] );
		}
	}

	// Render the page with a common top and bottom part, and page specific content
	function render() {
		// We&#039;re in an IDC: we need a decision made before we show the UI again.
		if ( self::$block_page_rendering_for_idc ) {
			return;
		}

		$this-&gt;page_render();
	}

	function admin_help() {
		$this-&gt;jetpack-&gt;admin_help();
	}

	function admin_page_load() {
		// This is big.  For the moment, just call the existing one.
		$this-&gt;jetpack-&gt;admin_page_load();
	}

	function admin_page_top() {
		include_once( JETPACK__PLUGIN_DIR . &#039;_inc/header.php&#039; );
	}

	function admin_page_bottom() {
		include_once( JETPACK__PLUGIN_DIR . &#039;_inc/footer.php&#039; );
	}

	// Add page specific scripts and jetpack stats for all menu pages
	function admin_scripts() {
		$this-&gt;page_admin_scripts(); // Delegate to inheriting class
		add_action( &#039;admin_footer&#039;, array( $this-&gt;jetpack, &#039;do_stats&#039; ) );
	}

	// Enqueue the Jetpack admin stylesheet
	function admin_styles() {
		$min = ( defined( &#039;SCRIPT_DEBUG&#039; ) &amp;&amp; SCRIPT_DEBUG ) ? &#039;&#039; : &#039;.min&#039;;

		wp_enqueue_style( &#039;jetpack-admin&#039;, plugins_url( &quot;css/jetpack-admin{$min}.css&quot;, JETPACK__PLUGIN_FILE ), array( &#039;genericons&#039; ), JETPACK__VERSION . &#039;-20121016&#039; );
		wp_style_add_data( &#039;jetpack-admin&#039;, &#039;rtl&#039;, &#039;replace&#039; );
		wp_style_add_data( &#039;jetpack-admin&#039;, &#039;suffix&#039;, $min );
	}

	/**
	 * Checks if WordPress version is too old to have REST API.
	 *
	 * @since 4.3
	 *
	 * @return bool
	 */
	function is_wp_version_too_old() {
		global $wp_version;
		return ( ! function_exists( &#039;rest_api_init&#039; ) || version_compare( $wp_version, &#039;4.4-z&#039;, &#039;&lt;=&#039; ) );
	}

	/**
	 * Checks if REST API is enabled.
	 *
	 * @since 4.4.2
	 *
	 * @return bool
	 */
	function is_rest_api_enabled() {
		return
			/** This filter is documented in wp-includes/rest-api/class-wp-rest-server.php */
			apply_filters( &#039;rest_enabled&#039;, true ) &amp;&amp;
			/** This filter is documented in wp-includes/rest-api/class-wp-rest-server.php */
			apply_filters( &#039;rest_jsonp_enabled&#039;, true ) &amp;&amp;
			/** This filter is documented in wp-includes/rest-api/class-wp-rest-server.php */
			apply_filters( &#039;rest_authentication_errors&#039;, true );
	}

	/**
	 * Checks the site plan and deactivates modules that were active but are no longer included in the plan.
	 *
	 * @since 4.4.0
	 *
	 * @param $page
	 *
	 * @return bool|array
	 */
	function check_plan_deactivate_modules( $page ) {
		if (
			Jetpack::is_development_mode()
			|| ! in_array(
				$page-&gt;base,
				array(
					&#039;toplevel_page_jetpack&#039;,
					&#039;admin_page_jetpack_modules&#039;,
					&#039;jetpack_page_vaultpress&#039;,
					&#039;jetpack_page_stats&#039;,
					&#039;jetpack_page_akismet-key-config&#039;
				)
			)
			|| true === self::$plan_checked
		) {
			return false;
		}

		self::$plan_checked = true;
		$previous = get_option( &#039;jetpack_active_plan&#039;, &#039;&#039; );
		$response = rest_do_request( new WP_REST_Request( &#039;GET&#039;, &#039;/jetpack/v4/site&#039; ) );

		if ( ! is_object( $response ) || $response-&gt;is_error() ) {

			// If we can&#039;t get information about the current plan we don&#039;t do anything
			self::$plan_checked = true;
			return;
		}

		$current = $response-&gt;get_data();
		$current = json_decode( $current[&#039;data&#039;] );

		$to_deactivate = array();
		if ( isset( $current-&gt;plan-&gt;product_slug ) ) {
			if (
				empty( $previous )
				|| ! isset( $previous[&#039;product_slug&#039;] )
				|| $previous[&#039;product_slug&#039;] !== $current-&gt;plan-&gt;product_slug
			) {
				$active = Jetpack::get_active_modules();
				switch ( $current-&gt;plan-&gt;product_slug ) {
					case &#039;jetpack_free&#039;:
						$to_deactivate = array( &#039;seo-tools&#039;, &#039;videopress&#039;, &#039;google-analytics&#039;, &#039;wordads&#039; );
						break;
					case &#039;jetpack_personal&#039;:
					case &#039;jetpack_personal_monthly&#039;:
						$to_deactivate = array( &#039;seo-tools&#039;, &#039;videopress&#039;, &#039;google-analytics&#039;, &#039;wordads&#039; );
						break;
					case &#039;jetpack_premium&#039;:
					case &#039;jetpack_premium_monthly&#039;:
						$to_deactivate = array( &#039;seo-tools&#039;, &#039;google-analytics&#039; );
						break;
				}
				$to_deactivate = array_intersect( $active, $to_deactivate );
				if ( ! empty( $to_deactivate ) ) {
					Jetpack::update_active_modules( array_filter( array_diff( $active, $to_deactivate ) ) );
				}
			}
		}
		return array(
			&#039;previous&#039;   =&gt; $previous,
			&#039;current&#039;    =&gt; $current,
			&#039;deactivate&#039; =&gt; $to_deactivate
		);
	}
}
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