Pariece McKinney
502 lines
24 KiB
Objective-C
502 lines
24 KiB
Objective-C
/*
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Copyright (c) 2015, Apple Inc. All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation and/or
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other materials provided with the distribution.
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3. Neither the name of the copyright holder(s) nor the names of any contributors
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may be used to endorse or promote products derived from this software without
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specific prior written permission. No license is granted to the trademarks of
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the copyright holders even if such marks are included in this software.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#import "ORKImageSelectionView.h"
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#import "ORKImageChoiceLabel.h"
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#import "ORKChoiceAnswerFormatHelper.h"
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#import "ORKHelpers_Internal.h"
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#import "ORKSkin.h"
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#import "UIImageView+ResearchKit.h"
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#import "UIImage+ResearchKit.h"
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@interface ORKChoiceButtonView : UIView
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- (instancetype)initWithImageChoice:(ORKImageChoice *)choice;
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@property (nonatomic, strong) UIButton *button;
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@property (nonatomic, copy) NSString *labelText;
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@property (nonatomic, copy) ORKImageChoice *choice;
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@end
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@implementation ORKChoiceButtonView
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- (instancetype)initWithImageChoice:(ORKImageChoice *)choice {
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self = [super init];
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if (self) {
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_choice = [choice copy];
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_labelText = choice.text.length > 0 ? choice.text: @" ";
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self.button = [UIButton buttonWithType:UIButtonTypeCustom];
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_button.exclusiveTouch = YES;
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[self setupButtonImagesFromImageChoice:choice];
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_button.imageView.contentMode = UIViewContentModeScaleAspectFit;
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[self addSubview:_button];
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ORKEnableAutoLayoutForViews(@[_button, _button.imageView]);
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[self setUpConstraints];
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// Accessibility
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NSString *trimmedText = [self.labelText stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
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if ( trimmedText.length == 0 ) {
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self.button.accessibilityLabel = ORKLocalizedString(@"AX_UNLABELED_IMAGE", nil);
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} else {
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self.button.accessibilityLabel = self.labelText;
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}
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[self updateViewColors];
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}
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return self;
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}
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- (void)setupButtonImagesFromImageChoice:(ORKImageChoice *)choice {
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if ([UITraitCollection currentTraitCollection].userInterfaceStyle == UIUserInterfaceStyleDark) {
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[_button setImage:[_button.imageView.image imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate] forState:UIControlStateNormal];
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} else {
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[_button setImage:[_button.imageView.image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal] forState:UIControlStateNormal];
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}
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if (choice.selectedStateImage) {
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UIImage *selectedStateImage = choice.selectedStateImage;
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if (@available(iOS 12.0, *)) {
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selectedStateImage = [choice.selectedStateImage ork_imageWithRenderingModeForUserInterfaceStyle:self.traitCollection.userInterfaceStyle];
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}
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[_button setImage:selectedStateImage forState:UIControlStateSelected];
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}
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UIImage *normalStateImage = choice.normalStateImage;
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if (@available(iOS 12.0, *)) {
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normalStateImage = [choice.normalStateImage ork_imageWithRenderingModeForUserInterfaceStyle:self.traitCollection.userInterfaceStyle];
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}
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[_button setImage:normalStateImage forState:UIControlStateNormal];
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}
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- (void)updateViewColors {
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if (@available(iOS 12.0, *)) {
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_button.imageView.tintColor = self.traitCollection.userInterfaceStyle == UIUserInterfaceStyleDark ? [UIColor whiteColor] : nil;
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}
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}
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- (void)traitCollectionDidChange:(UITraitCollection *)previousTraitCollection {
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[super traitCollectionDidChange:previousTraitCollection];
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[self setupButtonImagesFromImageChoice:_choice];
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}
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- (void)setUpConstraints {
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NSMutableArray *constraints = [NSMutableArray new];
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NSDictionary *views = @{ @"button": _button };
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[constraints addObjectsFromArray:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|[button]|"
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options:NSLayoutFormatDirectionLeadingToTrailing
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metrics:nil
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views:views]];
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[constraints addObjectsFromArray:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|[button]|"
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options:NSLayoutFormatDirectionLeadingToTrailing
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metrics:nil
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views:views]];
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UIImage *image = [_button imageForState:UIControlStateNormal];
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if (image.size.height > 0 && image.size.width > 0) {
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// Keep Aspect ratio
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[constraints addObject:[NSLayoutConstraint constraintWithItem:_button
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attribute:NSLayoutAttributeHeight
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relatedBy:NSLayoutRelationEqual
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toItem:_button.imageView
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attribute:NSLayoutAttributeWidth
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multiplier:image.size.height / image.size.width
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constant:0.0]];
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// button's height <= image
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[constraints addObject:[NSLayoutConstraint constraintWithItem:_button
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attribute:NSLayoutAttributeHeight
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relatedBy:NSLayoutRelationLessThanOrEqual
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toItem:nil attribute:NSLayoutAttributeHeight
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multiplier:1.0
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constant:image.size.height]];
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} else {
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// Keep Aspect ratio
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[constraints addObject:[NSLayoutConstraint constraintWithItem:_button
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attribute:NSLayoutAttributeHeight
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relatedBy:NSLayoutRelationEqual
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toItem:_button.imageView
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attribute:NSLayoutAttributeWidth
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multiplier:1.0
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constant:0.0]];
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ORK_Log_Info("The size of imageChoice's normal image should not be zero. %@", image);
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}
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[NSLayoutConstraint activateConstraints:constraints];
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}
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@end
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static const CGFloat SpacerWidth = 10.0;
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static const CGFloat SpacerHeight = 5.0;
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@implementation ORKImageSelectionView {
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ORKChoiceAnswerFormatHelper *_helper;
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NSArray *_buttonViews;
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ORKImageChoiceLabel *_choiceLabel;
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ORKImageChoiceLabel *_placeHolderLabel;
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BOOL _isVertical;
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BOOL _singleChoice;
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}
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- (ORKImageChoiceLabel *)makeLabel {
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ORKImageChoiceLabel *label = [[ORKImageChoiceLabel alloc] init];
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label.textAlignment = NSTextAlignmentCenter;
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label.numberOfLines = 0;
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return label;
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}
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- (instancetype)initWithImageChoiceAnswerFormat:(ORKImageChoiceAnswerFormat *)answerFormat answer:(id)answer {
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self = [self init];
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if (self) {
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NSAssert([answerFormat isKindOfClass:[ORKImageChoiceAnswerFormat class]], @"answerFormat should be an instance of ORKImageChoiceAnswerFormat");
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_helper = [[ORKChoiceAnswerFormatHelper alloc] initWithAnswerFormat:answerFormat];
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_isVertical = answerFormat.isVertical;
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_singleChoice = answerFormat.style == ORKChoiceAnswerStyleSingleChoice;
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_placeHolderLabel = [self makeLabel];
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_placeHolderLabel.text = [ORKLocalizedString(@"PLACEHOLDER_IMAGE_CHOICES", nil) stringByAppendingString:@""];
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_placeHolderLabel.textColor = [UIColor secondaryLabelColor];
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_choiceLabel = [self makeLabel];
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[self resetLabelText];
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[self addSubview:_choiceLabel];
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[self addSubview:_placeHolderLabel];
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NSMutableArray *buttonViews = [NSMutableArray new];
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NSMutableArray *labelTextArray = [NSMutableArray new];
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NSArray *imageChoices = answerFormat.imageChoices;
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for (ORKImageChoice *imageChoice in imageChoices) {
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if (imageChoice.text) {
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[labelTextArray addObject:imageChoice.text];
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}
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ORKChoiceButtonView *buttonView = [[ORKChoiceButtonView alloc] initWithImageChoice:imageChoice];
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[buttonView.button addTarget:self action:@selector(buttonTapped:) forControlEvents:UIControlEventTouchUpInside];
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buttonView.button.imageView.layer.cornerRadius = ORKImageChoiceButtonCornerRadii;
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[buttonViews addObject:buttonView];
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[self addSubview:buttonView];
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}
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_choiceLabel.textArray = labelTextArray;
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_buttonViews = buttonViews;
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for (UILabel *label in @[_choiceLabel, _placeHolderLabel]) {
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label.isAccessibilityElement = NO;
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}
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ORKEnableAutoLayoutForViews(@[_placeHolderLabel, _choiceLabel]);
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ORKEnableAutoLayoutForViews(_buttonViews);
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[self setUpConstraints];
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}
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return self;
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}
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- (void)setUpConstraints {
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NSMutableArray *constraints = [NSMutableArray new];
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[constraints addObjectsFromArray:
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[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-[_choiceLabel]-|"
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options:NSLayoutFormatDirectionLeadingToTrailing
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metrics:nil
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views:@{@"_choiceLabel": _choiceLabel}]];
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[constraints addObjectsFromArray:
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[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-[_placeHolderLabel]-|"
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options:NSLayoutFormatDirectionLeadingToTrailing
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metrics:nil
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views:@{@"_placeHolderLabel": _placeHolderLabel}]];
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[constraints addObject:[NSLayoutConstraint constraintWithItem:_placeHolderLabel
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attribute:NSLayoutAttributeCenterY
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relatedBy:NSLayoutRelationEqual
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toItem:_choiceLabel
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attribute:NSLayoutAttributeCenterY
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multiplier:1.0
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constant:0.0]];
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ORKChoiceButtonView *previousView = nil;
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for (ORKChoiceButtonView *buttonView in _buttonViews) {
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NSDictionary *views = NSDictionaryOfVariableBindings(buttonView, _choiceLabel);
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if (!_isVertical) {
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[constraints addObjectsFromArray:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|[buttonView]-30-[_choiceLabel]-|"
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options:NSLayoutFormatDirectionLeadingToTrailing
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metrics:nil
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views:views]];
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if (previousView) {
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// ButtonView left trailing
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[constraints addObject:[NSLayoutConstraint constraintWithItem:buttonView
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attribute:NSLayoutAttributeLeft
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relatedBy:NSLayoutRelationEqual
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toItem:previousView
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attribute:NSLayoutAttributeRight
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multiplier:1.0
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constant:SpacerWidth]];
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// All ButtonViews has equal width
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[constraints addObject:[NSLayoutConstraint constraintWithItem:buttonView
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attribute:NSLayoutAttributeWidth
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relatedBy:NSLayoutRelationEqual
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toItem:previousView
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attribute:NSLayoutAttributeWidth
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multiplier:1.0
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constant:0.0]];
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} else {
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// ButtonView left trailing
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[constraints addObject:[NSLayoutConstraint constraintWithItem:buttonView
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attribute:NSLayoutAttributeLeft
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relatedBy:NSLayoutRelationEqual
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toItem:self
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attribute:NSLayoutAttributeLeft
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multiplier:1.0
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constant:SpacerWidth]];
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}
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} else {
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if (previousView) {
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// ButtonView top spacing
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[constraints addObject:[NSLayoutConstraint constraintWithItem:buttonView
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attribute:NSLayoutAttributeTop
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relatedBy:NSLayoutRelationEqual
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toItem:previousView
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attribute:NSLayoutAttributeBottom
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multiplier:1.0
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constant:SpacerHeight]];
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// All ButtonViews has equal height
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[constraints addObject:[NSLayoutConstraint constraintWithItem:buttonView
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attribute:NSLayoutAttributeHeight
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relatedBy:NSLayoutRelationEqual
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toItem:previousView
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attribute:NSLayoutAttributeHeight
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multiplier:1.0
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constant:0.0]];
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// All ButtonViews has equal width
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[constraints addObject:[NSLayoutConstraint constraintWithItem:buttonView
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attribute:NSLayoutAttributeWidth
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relatedBy:NSLayoutRelationEqual
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toItem:previousView
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attribute:NSLayoutAttributeWidth
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multiplier:1.0
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constant:0.0]];
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} else {
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// ButtonView top spacing
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[constraints addObject:[NSLayoutConstraint constraintWithItem:buttonView
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attribute:NSLayoutAttributeTop
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relatedBy:NSLayoutRelationEqual
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toItem:self
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attribute:NSLayoutAttributeTop
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multiplier:1.0
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constant:SpacerHeight]];
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}
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// ButtonView left trailing
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[constraints addObject:[NSLayoutConstraint constraintWithItem:buttonView
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attribute:NSLayoutAttributeLeft
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relatedBy:NSLayoutRelationEqual
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toItem:self
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attribute:NSLayoutAttributeLeft
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multiplier:1.0
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constant:SpacerWidth]];
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// ButtonView right trailing
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[constraints addObject:[NSLayoutConstraint constraintWithItem:buttonView
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attribute:NSLayoutAttributeRight
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relatedBy:NSLayoutRelationEqual
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toItem:self
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attribute:NSLayoutAttributeRight
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multiplier:1.0
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constant:-SpacerWidth]];
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}
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previousView = buttonView;
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}
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if (!_isVertical) {
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if (previousView) {
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// ButtonView right trailing
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[constraints addObject:[NSLayoutConstraint constraintWithItem:previousView
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attribute:NSLayoutAttributeRight
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relatedBy:NSLayoutRelationEqual
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toItem:self
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attribute:NSLayoutAttributeRight
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multiplier:1.0
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constant:-SpacerWidth]];
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}
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} else {
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if (previousView) {
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// ButtonView bottom spacing
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[constraints addObject:[NSLayoutConstraint constraintWithItem:previousView
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attribute:NSLayoutAttributeBottom
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relatedBy:NSLayoutRelationEqual
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toItem:_choiceLabel
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attribute:NSLayoutAttributeTop
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multiplier:1.0
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constant:-30.0]];
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[constraints addObject:[NSLayoutConstraint constraintWithItem:_choiceLabel
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attribute:NSLayoutAttributeBottom
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relatedBy:NSLayoutRelationEqual
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toItem:self
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attribute:NSLayoutAttributeBottom
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multiplier:1.0
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constant:0.0]];
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}
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}
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[NSLayoutConstraint activateConstraints:constraints];
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}
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- (void)setAnswer:(id)answer {
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_answer = answer;
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NSArray *selectedIndexes = [_helper selectedIndexesForAnswer:answer];
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[self setSelectedIndexes:selectedIndexes];
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}
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- (void)resetLabelText {
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_placeHolderLabel.hidden = NO;
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_choiceLabel.hidden = !_placeHolderLabel.hidden;
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}
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- (void)resetButtonSelection:(UIButton *)button {
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[_buttonViews enumerateObjectsUsingBlock:^(ORKChoiceButtonView *buttonView, NSUInteger idx, BOOL *stop) {
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if (_singleChoice) {
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buttonView.button.imageView.backgroundColor = nil;
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} else if ([buttonView.button isEqual: button]) {
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buttonView.button.imageView.backgroundColor = nil;
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}
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}];
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}
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- (void)setLabelText:(NSString *)text {
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if (_singleChoice || [text length] > 0) {
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_choiceLabel.text = text;
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_choiceLabel.textColor = [UIColor labelColor];
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_choiceLabel.hidden = NO;
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_placeHolderLabel.hidden = !_choiceLabel.hidden;
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} else {
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[self resetLabelText];
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}
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}
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- (IBAction)buttonTapped:(UIButton *)button {
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button.selected = !button.selected;
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if (button.selected) {
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[_buttonViews enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
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ORKChoiceButtonView *buttonView = obj;
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if (buttonView.button != button) {
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if (_singleChoice) {
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buttonView.button.selected = NO;
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buttonView.button.imageView.backgroundColor = nil;
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}
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} else {
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if (_singleChoice) {
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[self setLabelText:buttonView.labelText];
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} else {
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[self setLabelText:[_helper labelForChoiceAnswer:[_helper answerForSelectedIndexes:[self selectedIndexes]]]];
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}
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buttonView.button.imageView.backgroundColor = [UIColor lightGrayColor];
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}
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}];
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} else {
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if (_singleChoice) {
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[self resetLabelText];
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} else {
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[self setLabelText:[_helper labelForChoiceAnswer:[_helper answerForSelectedIndexes:[self selectedIndexes]]]];
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}
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[self resetButtonSelection:button];
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}
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_answer = [_helper answerForSelectedIndexes:[self selectedIndexes]];
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if ([_delegate respondsToSelector:@selector(selectionViewSelectionDidChange:)]) {
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[_delegate selectionViewSelectionDidChange:self];
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}
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}
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- (NSArray *)selectedIndexes {
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NSMutableArray *array = [NSMutableArray new];
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[_buttonViews enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
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ORKChoiceButtonView *buttonView = obj;
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if (buttonView.button.selected)
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{
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[array addObject:@(idx)];
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}
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}];
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return [array copy];
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}
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- (void)setSelectedIndexes:(NSArray *)selectedIndexes {
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[selectedIndexes enumerateObjectsUsingBlock:^(id object, NSUInteger idx, BOOL *stop) {
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if (![object isKindOfClass:[NSNumber class]]) {
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@throw [NSException exceptionWithName:NSGenericException reason:@"selectedIndexes should only containt objects of the NSNumber kind" userInfo:nil];
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}
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NSNumber *number = object;
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if (number.unsignedIntegerValue < _buttonViews.count) {
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ORKChoiceButtonView *buttonView = _buttonViews[number.unsignedIntegerValue];
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[buttonView button].selected = YES;
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buttonView.button.imageView.backgroundColor = [UIColor lightGrayColor];
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if (_singleChoice) {
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[self setLabelText:buttonView.labelText];
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}
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}
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}];
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if (!_singleChoice) {
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[self setLabelText:[_helper labelForChoiceAnswer:[_helper answerForSelectedIndexes:[self selectedIndexes]]]];
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}
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}
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- (BOOL)isAccessibilityElement {
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return NO;
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}
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@end
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