Create managers folder

Riot/Managers/Widgets/Widget.h

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+/*
+ Copyright 2017 Vector Creations Ltd
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+#import <Foundation/Foundation.h>
+
+#import <MatrixSDK/MatrixSDK.h>
+
+/**
+ The `Widget` class represents modular widget information.
+ */
+@interface Widget : NSObject
+
+/**
+ The widget id.
+ */
+@property (nonatomic, readonly, nonnull) NSString *widgetId;
+
+/**
+ The widget type.
+
+ Some types are defined in `WidgetManager.h`.
+ Nil if the widget is no more active in the room.
+ */
+@property (nonatomic, readonly, nullable) NSString *type;
+
+/**
+ The raw widget url.
+
+ This is the preformated version of the widget url containing parameters names.
+ This is not a valid url. The url to use in a webview can be obtained with
+ `[self widgetUrl:]`.
+ */
+@property (nonatomic, readonly, nullable) NSString *url;
+
+/**
+ The widget name.
+ */
+@property (nonatomic, readonly, nullable) NSString *name;
+
+/**
+ The widget additional data.
+ */
+@property (nonatomic, readonly, nullable) NSDictionary *data;
+
+/**
+ The widget event that is at the origin of the widget.
+ */
+@property (nonatomic, readonly, nonnull) MXEvent *widgetEvent;
+
+/**
+ The Matrix session where the widget is.
+ */
+@property (nonatomic, readonly, nonnull) MXSession *mxSession;
+
+/**
+ Indicate if the widget is still active.
+ */
+@property (nonatomic, readonly) BOOL isActive;
+
+/**
+ The room id of the widget.
+ */
+@property (nonatomic, readonly, nonnull) NSString *roomId;
+
+/**
+ Create a Widget instance from a widget event.
+ 
+ @param widgetEvent the state event representing a widget.
+ @return the newly created instance.
+ */
+- (instancetype _Nullable )initWithWidgetEvent:(MXEvent* _Nonnull)widgetEvent inMatrixSession:(MXSession* _Nonnull)mxSession;
+
+/**
+ Build the url of the widget that can be opened in a webview.
+
+ @param success A block object called when the operation succeeds. It provides the valid widget url.
+ @param failure A block object called when the operation fails.
+
+ @return a MXHTTPOperation instance.
+ */
+- (MXHTTPOperation * _Nullable)widgetUrl:(void (^_Nonnull)(NSString * _Nonnull widgetUrl))success
+                                 failure:(void (^ _Nullable)(NSError * _Nonnull error))failure;
+
+@end