assistant / classes / class-fl-assistant-plugin-loader.php

class-fl-assistant-plugin-loader.php in Assistant – Every Day Productivity Apps 0.2.1, at classes/class-fl-assistant-plugin-loader.php

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1	<?php
2
3	if ( ! class_exists( 'FL_Assistant_Plugin_Loader' ) ) {
4
5	/**
6	* Sets up plugin constants and loads the necessary PHP files.
7	* If the plugin can't be loaded, an admin notice is shown.
8	*/
9	final class FL_Assistant_Plugin_Loader {
10
11	/**
12	* Initialize the plugin.
13	*/
14	static public function init() {
15	if ( self::get_loading_error() ) {
16	self::admin_notice_hooks();
17	return;
18	}
19
20	self::define_constants();
21	self::load_files();
22
23	register_activation_hook( FL_ASSISTANT_FILE, __CLASS__ . '::activate' );
24	}
25
26	/**
27	* Define plugin constants.
28	*/
29	static private function define_constants() {
30	define( 'FL_ASSISTANT_VERSION', '0.1' );
31	define( 'FL_ASSISTANT_FILE', trailingslashit( dirname( dirname( __FILE__ ) ) ) . 'fl-assistant.php' );
32	define( 'FL_ASSISTANT_DIR', plugin_dir_path( FL_ASSISTANT_FILE ) );
33	define( 'FL_ASSISTANT_URL', plugins_url( '/', FL_ASSISTANT_FILE ) );
34	}
35
36	/**
37	* Runs on plugin activation.
38	*/
39	static public function activate() {
40	do_action( 'fl_assistant_activate' );
41	}
42
43	/**
44	* Load plugin files.
45	*/
46	static public function load_files() {
47	require_once FL_ASSISTANT_DIR . 'classes/class-fl-assistant-asset-loader.php';
48	require_once FL_ASSISTANT_DIR . 'classes/class-fl-assistant-data.php';
49	include_once FL_ASSISTANT_DIR . 'classes/class-fl-assistant-heartbeat.php';
50	require_once FL_ASSISTANT_DIR . 'classes/class-fl-assistant-rest.php';
51
52	do_action( 'fl_assistant_loaded' );
53	}
54
55	/**
56	* Initializes actions for the admin notice if the plugin can't load.
57	*/
58	static private function admin_notice_hooks() {
59	global $pagenow;
60
61	if ( 'plugins.php' === $pagenow ) {
62	add_action( 'admin_notices', __CLASS__ . '::admin_notice' );
63	add_action( 'network_admin_notices', __CLASS__ . '::admin_notice' );
64	}
65	}
66
67	/**
68	* Shows an admin notice if the plugin can't load.
69	*/
70	static public function admin_notice() {
71	if ( ! is_admin() ) {
72	return;
73	} elseif ( ! is_user_logged_in() ) {
74	return;
75	} elseif ( ! current_user_can( 'update_core' ) ) {
76	return;
77	}
78
79	$message = self::get_loading_error();
80
81	if ( $message ) {
82	echo '<div class="error">';
83	echo '<p>' . sprintf( $message ) . '</p>';
84	echo '</div>';
85	}
86	}
87
88	/**
89	* Returns a plugin loading error if there is one.
90	*/
91	static private function get_loading_error() {
92	$error = false;
93
94	if ( version_compare( phpversion(), '5.6', '<' ) ) {
95	$url = 'http://www.wpupdatephp.com/contact-host/';
96	/* translators: php upgrade url. */
97	$error = sprintf( __( 'Assistant requires PHP 5.6 or above. Please <a href="%s">update your PHP version</a> before continuing.', 'fl-assistant' ), $url );
98	}
99
100	return $error;
101	}
102	}
103
104	FL_Assistant_Plugin_Loader::init();
105	}
106