Adds support for StoragePermissionStrategy

ios/Classes/PermissionManager.h

@@ -19,6 +19,7 @@
 #import "PhotoPermissionStrategy.h"
 #import "SensorPermissionStrategy.h"
 #import "SpeechPermissionStrategy.h"
+#import "StoragePermissionStrategy.h"
 #import "UnknownPermissionStrategy.h"
 #import "PermissionHandlerEnums.h"
 #import "Codec.h"
@@ -28,13 +29,10 @@ typedef void (^PermissionRequestCompletion)(NSDictionary *permissionRequestResul
 @interface PermissionManager : NSObject
 
 - (instancetype)initWithStrategyInstances;
+- (void)requestPermissions:(NSArray *)permissions completion:(PermissionRequestCompletion)completion;
 
 + (void)checkPermissionStatus:(enum PermissionGroup)permission result:(FlutterResult)result;
-
 + (void)checkServiceStatus:(enum PermissionGroup)permission result:(FlutterResult)result;
-
 + (void)openAppSettings:(FlutterResult)result;
 
-- (void)requestPermissions:(NSArray *)permissions completion:(PermissionRequestCompletion)completion;
-
 @end

ios/Classes/PermissionManager.m

@@ -99,6 +99,8 @@
             return [SensorPermissionStrategy new];
         case PermissionGroupSpeech:
             return [SpeechPermissionStrategy new];
+        case PermissionGroupStorage:
+            return [StoragePermissionStrategy new];
         default:
             return [UnknownPermissionStrategy new];
     }

ios/Classes/strategies/StoragePermissionStrategy.h

+//
+//  StoragePermissionStrategy.h
+//  permission_handler
+//
+//  Created by Frank Gregor on 06.11.19.
+//
+
+#import <Foundation/Foundation.h>
+#import "PermissionStrategy.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface StoragePermissionStrategy : NSObject <PermissionStrategy>
+
+@end
+
+NS_ASSUME_NONNULL_END

ios/Classes/strategies/StoragePermissionStrategy.m

+//
+//  StoragePermissionStrategy.m
+//  permission_handler
+//
+//  Created by Frank Gregor on 06.11.19.
+//
+
+#import "StoragePermissionStrategy.h"
+
+@implementation StoragePermissionStrategy
+
+- (PermissionStatus)checkPermissionStatus:(PermissionGroup)permission {
+    return [StoragePermissionStrategy permissionStatus];
+}
+
+- (ServiceStatus)checkServiceStatus:(PermissionGroup)permission {
+    return ServiceStatusNotApplicable;
+}
+
+- (void)requestPermission:(PermissionGroup)permission completionHandler:(PermissionStatusHandler)completionHandler {
+    completionHandler([StoragePermissionStrategy permissionStatus]);
+}
+
++ (PermissionStatus)permissionStatus {
+    return PermissionStatusGranted;
+}
+
+@end