Moving jetpack_is_mobile into a package

class.jetpack.php

@@ -18,6 +18,7 @@
 use Automattic\Jetpack\Tracking;
 use Automattic\Jetpack\Plugin\Tracking as Plugin_Tracking;
 use Automattic\Jetpack\Redirect;
+use Automattic\Jetpack\Jetpack_User_Agent_Info;
 
 /*
 Options:
@@ -709,10 +710,14 @@ private function __construct() {
 			jetpack_require_lib( 'functions.wp-notify' );
 		}
 
-		// Hide edit post link if mobile app.
-		if ( Jetpack_User_Agent_Info::is_mobile_app() ) {
-			add_filter( 'get_edit_post_link', '__return_empty_string' );
-		}
+		add_action(
+			'plugins_loaded',
+			function() {
+				if ( Jetpack_User_Agent_Info::is_mobile_app() ) {
+					add_filter( 'get_edit_post_link', '__return_empty_string' );
+				}
+			}
+		);
 
 		// Update the Jetpack plan from API on heartbeats.
 		add_action( 'jetpack_heartbeat', array( 'Jetpack_Plan', 'refresh_from_wpcom' ) );

composer.json

@@ -22,6 +22,7 @@
 		"automattic/jetpack-error": "@dev",
 		"automattic/jetpack-jitm": "@dev",
 		"automattic/jetpack-logo": "@dev",
+		"automattic/jetpack-mobile": "@dev",
 		"automattic/jetpack-options": "@dev",
 		"automattic/jetpack-partner": "@dev",
 		"automattic/jetpack-redirect": "@dev",

packages/mobile/.gitattributes

@@ -0,0 +1,4 @@
+# Files not needed to be distributed in the package.
+.gitattributes   export-ignore
+phpunit.xml.dist export-ignore
+tests/           export-ignore

packages/mobile/README.md

@@ -0,0 +1,31 @@
+# Jetpack Constants
+
+A method to detect mobile devices, formerly jetpack_is_mobile.
+
+
+
+### Usage
+
+Detect any mobile phone.
+
+```php
+use Automattic\Jetpack\Mobile;
+
+$is_mobile = Mobile::is_mobile();
+```
+
+Detect a smartphone.
+
+```php
+use Automattic\Jetpack\Mobile;
+
+$is_smartphone = Mobile::is_mobile( 'smart' );
+```
+
+Detect a dumbphone and return its UA.
+
+```php
+use Automattic\Jetpack\Mobile;
+
+$is_smartphone = Mobile::is_mobile( 'dumb', true );
+```

packages/mobile/composer.json

@@ -0,0 +1,24 @@
+{
+	"name": "automattic/jetpack-mobile",
+	"description": "A method to detect mobile devices, formerly jetpack_is_mobile.",
+	"type": "library",
+	"license": "GPL-2.0-or-later",
+	"require": {},
+	"require-dev": {
+		"phpunit/phpunit": "^5.7 || ^6.5 || ^7.5",
+		"php-mock/php-mock": "^2.1"
+	},
+	"autoload": {
+		"classmap": [
+			"src/"
+		]
+	},
+	"scripts": {
+		"phpunit": [
+			"@composer install",
+			"./vendor/phpunit/phpunit/phpunit --colors=always"
+		]
+	},
+	"minimum-stability": "dev",
+	"prefer-stable": true
+}

packages/mobile/phpunit.xml.dist

@@ -0,0 +1,7 @@
+<phpunit bootstrap="tests/php/bootstrap.php" backupGlobals="false" colors="true">
+	<testsuites>
+		<testsuite name="main">
+			<directory prefix="test" suffix=".php">tests/php</directory>
+		</testsuite>
+	</testsuites>
+</phpunit>