components/Dialogs/src/private/MDCAlertControllerView+Private.h

// Copyright 2018-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 <UIKit/UIKit.h>

#import "MDCAlertActionManager.h"
#import "MaterialButtons.h"

@interface MDCAlertControllerView ()

@property(nonatomic, nonnull, strong) UILabel *titleLabel;
@property(nonatomic, nonnull, strong) UITextView *messageTextView;

/** An optional custom UIView that is displaed under the alert message. */
@property(nonatomic, nullable, strong) UIView *accessoryView;

/** An optional custom view above the title of the alert. */
@property(nonatomic, strong, nullable) UIView *titleIconView;

@property(nonatomic, nullable, weak) MDCAlertActionManager *actionManager;

/** The scroll view that holds the @c titleLabel. */
@property(nonatomic, nonnull, strong) UIScrollView *titleScrollView;

/** The scroll view that holds the @c messageTextView and @c accessoryView. */
@property(nonatomic, nonnull, strong) UIScrollView *contentScrollView;

/** The scroll view that holds all of the buttons created for each action. */
@property(nonatomic, nonnull, strong) UIScrollView *actionsScrollView;

/** The backing image view of @c titleIcon. */
@property(nonatomic, nullable, strong) UIImageView *titleIconImageView;

/** The horizontal alignment of @c titleIcon. */
@property(nonatomic, assign) NSTextAlignment titleIconAlignment;

/** The horizontal alignment of @c title. */
@property(nonatomic, assign) NSTextAlignment titleAlignment;

/** The horizontal alignment of @c message. */
@property(nonatomic, assign) NSTextAlignment messageAlignment;

/** The alert actions alignment in horizontal layout. */
@property(nonatomic, assign) MDCContentHorizontalAlignment actionsHorizontalAlignment;

/** The horizontal alignment of the alert's actions when in vertical layout. */
@property(nonatomic, assign)
    MDCContentHorizontalAlignment actionsHorizontalAlignmentInVerticalLayout;

/** Enables ordering actions by emphasis when they are vertically aligned. */
@property(nonatomic, assign) BOOL orderVerticalActionsByEmphasis;

- (void)addActionButton:(nonnull MDCButton *)button;
+ (void)styleAsTextButton:(nonnull MDCButton *)button;

- (CGSize)calculatePreferredContentSizeForBounds:(CGSize)boundsSize;

- (CGSize)calculateActionsSizeThatFitsWidth:(CGFloat)boundingWidth;

- (void)updateFonts;

/**
 Affects the fallback behavior for when a scaled font is not provided.

 If @c YES, the font size will adjust even if a scaled font has not been provided for
 a given @c UIFont property on this component.

 If @c NO, the font size will only be adjusted if a scaled font has been provided.

 Default value is @c YES.
 */
@property(nonatomic, assign) BOOL adjustsFontForContentSizeCategoryWhenScaledFontIsUnavailable;

@end