material-components_material-components-ios/components/Buttons/examples/ButtonsTypicalUseExampleViewController.m

/*
 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 "MaterialButtons.h"
#import "MaterialButtons+ButtonThemer.h"
#import "MaterialButtons+ColorThemer.h"
#import "MaterialButtons+TypographyThemer.h"
#import "MaterialTypography.h"
#import "MDCTextButtonThemer.h"

#import "supplemental/ButtonsTypicalUseSupplemental.h"

const CGSize kMinimumAccessibleButtonSize = {64.0, 48.0};

@interface ButtonsTypicalUseExampleViewController ()
@property(nonatomic, strong) MDCFloatingButton *floatingButton;
@end

@implementation ButtonsTypicalUseExampleViewController

- (id)init {
  self = [super init];
  if (self) {
    self.colorScheme = [[MDCSemanticColorScheme alloc] init];
    self.typographyScheme = [[MDCTypographyScheme alloc] init];
  }
  return self;
}

- (void)viewDidLoad {
  [super viewDidLoad];

  self.view.backgroundColor = [UIColor whiteColor];

  MDCButtonScheme *buttonScheme = [[MDCButtonScheme alloc] init];
  buttonScheme.colorScheme = self.colorScheme;
  buttonScheme.typographyScheme = self.typographyScheme;

  // Contained button

  MDCButton *containedButton = [[MDCButton alloc] init];
  [containedButton setTitle:@"Button" forState:UIControlStateNormal];
  [MDCContainedButtonThemer applyScheme:buttonScheme toButton:containedButton];
  [containedButton sizeToFit];
  CGFloat containedButtonVerticalInset =
      MIN(0, -(kMinimumAccessibleButtonSize.height - CGRectGetHeight(containedButton.bounds)) / 2);
  CGFloat containedButtonHorizontalInset =
      MIN(0, -(kMinimumAccessibleButtonSize.width - CGRectGetWidth(containedButton.bounds)) / 2);
  containedButton.hitAreaInsets =
      UIEdgeInsetsMake(containedButtonVerticalInset, containedButtonHorizontalInset,
                       containedButtonVerticalInset, containedButtonHorizontalInset);
  [containedButton addTarget:self
                      action:@selector(didTap:)
            forControlEvents:UIControlEventTouchUpInside];
  [self.view addSubview:containedButton];

  // Disabled contained button

  MDCButton *disabledContainedButton = [[MDCButton alloc] init];
  [disabledContainedButton setTitle:@"Button" forState:UIControlStateNormal];
  [MDCContainedButtonThemer applyScheme:buttonScheme toButton:disabledContainedButton];
  [disabledContainedButton sizeToFit];
  [disabledContainedButton addTarget:self
                              action:@selector(didTap:)
                    forControlEvents:UIControlEventTouchUpInside];
  [disabledContainedButton setEnabled:NO];
  [self.view addSubview:disabledContainedButton];

  // Text button

  MDCButton *textButton = [[MDCButton alloc] init];
  [MDCTextButtonThemer applyScheme:buttonScheme toButton:textButton];
  [textButton setTitle:@"Button" forState:UIControlStateNormal];
  [textButton sizeToFit];
  CGFloat textButtonVerticalInset =
      MIN(0, -(kMinimumAccessibleButtonSize.height - CGRectGetHeight(textButton.bounds)) / 2);
  CGFloat textButtonHorizontalInset =
      MIN(0, -(kMinimumAccessibleButtonSize.width - CGRectGetWidth(textButton.bounds)) / 2);
  textButton.hitAreaInsets =
      UIEdgeInsetsMake(textButtonVerticalInset, textButtonHorizontalInset,
                       textButtonVerticalInset, textButtonHorizontalInset);
  [textButton addTarget:self
                 action:@selector(didTap:)
       forControlEvents:UIControlEventTouchUpInside];
  [self.view addSubview:textButton];

  // Disabled Text button

  MDCButton *disabledTextButton = [[MDCButton alloc] init];
  [disabledTextButton setTitle:@"Button" forState:UIControlStateNormal];
  [MDCTextButtonThemer applyScheme:buttonScheme toButton:disabledTextButton];
  [disabledTextButton sizeToFit];
  [disabledTextButton addTarget:self
                         action:@selector(didTap:)
               forControlEvents:UIControlEventTouchUpInside];
  [disabledTextButton setEnabled:NO];
  [self.view addSubview:disabledTextButton];

  // Outlined button

  MDCButton *outlinedButton = [[MDCButton alloc] init];
  [outlinedButton setTitle:@"Button" forState:UIControlStateNormal];
  [MDCOutlinedButtonThemer applyScheme:buttonScheme toButton:outlinedButton];
  [outlinedButton sizeToFit];
  CGFloat outlineButtonVerticalInset =
      MIN(0, -(kMinimumAccessibleButtonSize.height - CGRectGetHeight(outlinedButton.frame)) / 2);
  CGFloat outlineButtonHorizontalInset =
      MIN(0, -(kMinimumAccessibleButtonSize.width - CGRectGetWidth(outlinedButton.frame)) / 2);
  outlinedButton.hitAreaInsets =
      UIEdgeInsetsMake(outlineButtonVerticalInset, outlineButtonHorizontalInset,
                       outlineButtonVerticalInset, outlineButtonHorizontalInset);
  [outlinedButton addTarget:self
                    action:@selector(didTap:)
          forControlEvents:UIControlEventTouchUpInside];
  [self.view addSubview:outlinedButton];

  // Disabled outlined button

  MDCButton *disabledOutlinedButton = [[MDCButton alloc] init];
  [disabledOutlinedButton setTitle:@"Button" forState:UIControlStateNormal];
  [MDCOutlinedButtonThemer applyScheme:buttonScheme toButton:disabledOutlinedButton];
  [disabledOutlinedButton sizeToFit];
  [disabledOutlinedButton addTarget:self
                             action:@selector(didTap:)
                   forControlEvents:UIControlEventTouchUpInside];
  [disabledOutlinedButton setEnabled:NO];
  [self.view addSubview:disabledOutlinedButton];

  // Floating action button

  self.floatingButton = [[MDCFloatingButton alloc] init];
  [self.floatingButton sizeToFit];
  [self.floatingButton addTarget:self
                          action:@selector(didTap:)
                forControlEvents:UIControlEventTouchUpInside];

  UIImage *plusImage =
      [[UIImage imageNamed:@"Plus"] imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
  [self.floatingButton setImage:plusImage forState:UIControlStateNormal];
  [MDCFloatingActionButtonThemer applyScheme:buttonScheme toButton:self.floatingButton];
  self.floatingButton.accessibilityLabel = @"Create";
  [self.view addSubview:self.floatingButton];

  self.buttons = @[
    containedButton, disabledContainedButton, textButton, disabledTextButton, outlinedButton,
    disabledOutlinedButton,self.floatingButton
  ];

  [self setupExampleViews];

  NSMutableArray *accessibilityElements = [@[] mutableCopy];
  for (NSUInteger index = 0; index < self.buttons.count; ++index) {
    [accessibilityElements addObject:self.labels[index]];
    [accessibilityElements addObject:self.buttons[index]];
  }
  self.view.accessibilityElements = [accessibilityElements copy];
}

- (void)setupExampleViews {
  UILabel *containedButtonLabel = [self addLabelWithText:@"Contained"];
  UILabel *disabledContainedButtonLabel = [self addLabelWithText:@"Disabled Contained"];
  UILabel *textButtonLabel = [self addLabelWithText:@"Text button"];
  UILabel *disabledTextButtonLabel = [self addLabelWithText:@"Disabled text button"];
  UILabel *outlinedButtonLabel = [self addLabelWithText:@"Outlined"];
  UILabel *disabledOutlinedButtonLabel = [self addLabelWithText:@"Disabled Outlined"];
  UILabel *floatingButtonLabel = [self addLabelWithText:@"Floating Action"];

  self.labels = @[
    containedButtonLabel, disabledContainedButtonLabel, textButtonLabel, disabledTextButtonLabel,
    outlinedButtonLabel, disabledOutlinedButtonLabel, floatingButtonLabel
  ];
}

- (void)didTap:(id)sender {
  NSLog(@"%@ was tapped.", NSStringFromClass([sender class]));
  if (sender == self.floatingButton) {
    [self.floatingButton
          collapse:YES
        completion:^{
          dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1 * NSEC_PER_SEC)),
                         dispatch_get_main_queue(), ^{
                           [self.floatingButton expand:YES completion:nil];
                         });
        }];
  }
}

- (void)viewWillAppear:(BOOL)animated {
  [super viewWillAppear:animated];
  if (animated) {
    [self.floatingButton collapse:NO completion:nil];
  }
}

- (void)viewDidAppear:(BOOL)animated {
  [super viewDidAppear:animated];
  if (animated) {
    [self.floatingButton expand:YES completion:nil];
  }
}

@end