components/Snackbar/src/private/MDCSnackbarMessageInternal.h

// Copyright 2016-present the Material Components for iOS authors. All Rights Reserved.
//
// 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 "MDCSnackbarMessage.h"

/**
 Internal-only methods used by MDCSnackbarMessage and MDCSnackbarManager.
 */
@interface MDCSnackbarMessage ()

/**
 The class of the view which should be instantiated in order to show this message.

 The class returned by this method must be a subclass of MDCSnackbarMessageView.
 */
- (Class)viewClass;

/**
 Executes @c self.completionhandler on the main thread.

 @c completion is called after @c self.completionHandler has executed. If @c self.completionHandler
 is nil, then @c completion fires immediately from the calling thread.
 */
- (void)executeCompletionHandlerWithUserInteraction:(BOOL)userInteraction
                                         completion:(void (^)(void))completion;

/**
 Given @c action, which must be in @c self.actions, this method will call the action handler on
 @c self.targetQueue.

 @c completion is called after the handler has executed. If @c action.handler is nil, then
 @c completion fires immediately from the calling thread. Passing a nil @c action will immediately
 call @c completion.
 */
- (void)executeActionHandler:(MDCSnackbarMessageAction *)action
                  completion:(void (^)(void))completion;

/**
 The error if one is encountered while attempting to present the message.
 */
@property(nonatomic, strong, readwrite) NSError *error;

@end