// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#import "ios/chrome/browser/shared/ui/table_view/cells/table_view_switch_cell.h"
#import "ios/chrome/browser/shared/ui/util/uikit_ui_util.h"
#import "ios/chrome/common/ui/colors/semantic_color_names.h"
#import "ios/chrome/common/ui/table_view/table_view_cells_constants.h"
#import "ios/chrome/common/ui/util/constraints_ui_util.h"
#import "ios/chrome/grit/ios_strings.h"
#import "ui/base/l10n/l10n_util_mac.h"
namespace {
// Padding used between the `switchView` and the end of the `contentView`.
const CGFloat kSwitchTrailingPadding = 22;
} // namespace
@interface TableViewSwitchCell ()
// The image view for the leading icon.
@property(nonatomic, readonly, strong) UIImageView* iconImageView;
// Constraints that are used when the iconImageView is visible and hidden.
@property(nonatomic, strong) NSLayoutConstraint* iconVisibleConstraint;
@property(nonatomic, strong) NSLayoutConstraint* iconHiddenConstraint;
// Constraints that are used when the preferred content size is an
// "accessibility" category.
@property(nonatomic, strong) NSArray* accessibilityConstraints;
// Constraints that are used when the preferred content size is *not* an
// "accessibility" category.
@property(nonatomic, strong) NSArray* standardConstraints;
// Custom label defined via the setter, if any.
@property(nonatomic, strong) NSString* customAccessibilityLabel;
@end
@implementation TableViewSwitchCell {
UIView* _iconBackground;
}
@synthesize textLabel = _textLabel;
@synthesize detailTextLabel = _detailTextLabel;
- (instancetype)initWithStyle:(UITableViewCellStyle)style
reuseIdentifier:(NSString*)reuseIdentifier {
self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
if (self) {
self.isAccessibilityElement = YES;
_iconBackground = [[UIView alloc] init];
_iconBackground.translatesAutoresizingMaskIntoConstraints = NO;
_iconBackground.hidden = YES;
[self.contentView addSubview:_iconBackground];
_iconImageView = [[UIImageView alloc] init];
_iconImageView.translatesAutoresizingMaskIntoConstraints = NO;
_iconImageView.contentMode = UIViewContentModeCenter;
[_iconBackground addSubview:_iconImageView];
AddSameCenterConstraints(_iconBackground, _iconImageView);
UILayoutGuide* textLayoutGuide = [[UILayoutGuide alloc] init];
[self.contentView addLayoutGuide:textLayoutGuide];
_textLabel = [[UILabel alloc] init];
_textLabel.translatesAutoresizingMaskIntoConstraints = NO;
_textLabel.font = [UIFont preferredFontForTextStyle:UIFontTextStyleBody];
_textLabel.adjustsFontForContentSizeCategory = YES;
_textLabel.textColor = [UIColor colorNamed:kTextPrimaryColor];
_textLabel.numberOfLines = 0;
[self.contentView addSubview:_textLabel];
_detailTextLabel = [[UILabel alloc] init];
_detailTextLabel.translatesAutoresizingMaskIntoConstraints = NO;
_detailTextLabel.font =
[UIFont preferredFontForTextStyle:UIFontTextStyleFootnote];
_detailTextLabel.adjustsFontForContentSizeCategory = YES;
_detailTextLabel.textColor = [UIColor colorNamed:kTextSecondaryColor];
_detailTextLabel.numberOfLines = 0;
[self.contentView addSubview:_detailTextLabel];
_switchView = [[UISwitch alloc] initWithFrame:CGRectZero];
_switchView.translatesAutoresizingMaskIntoConstraints = NO;
[_switchView
setContentCompressionResistancePriority:UILayoutPriorityDefaultHigh + 1
forAxis:
UILayoutConstraintAxisHorizontal];
_switchView.isAccessibilityElement = YES;
_switchView.accessibilityHint =
l10n_util::GetNSString(IDS_IOS_TOGGLE_SWITCH_ACCESSIBILITY_HINT);
[self.contentView addSubview:_switchView];
// Set up the constraints assuming that the icon image is hidden.
_iconVisibleConstraint = [textLayoutGuide.leadingAnchor
constraintEqualToAnchor:_iconBackground.trailingAnchor
constant:kTableViewImagePadding];
_iconHiddenConstraint = [textLayoutGuide.leadingAnchor
constraintEqualToAnchor:self.contentView.leadingAnchor
constant:kTableViewHorizontalSpacing];
_standardConstraints = @[
[_switchView.centerYAnchor
constraintEqualToAnchor:self.contentView.centerYAnchor],
[textLayoutGuide.trailingAnchor
constraintEqualToAnchor:_switchView.leadingAnchor
constant:-kTableViewHorizontalSpacing],
[textLayoutGuide.centerYAnchor
constraintEqualToAnchor:self.contentView.centerYAnchor],
[_switchView.trailingAnchor
constraintEqualToAnchor:self.contentView.trailingAnchor
constant:-kSwitchTrailingPadding],
];
_accessibilityConstraints = @[
[_switchView.topAnchor
constraintEqualToAnchor:textLayoutGuide.bottomAnchor
constant:kTableViewLargeVerticalSpacing],
[_switchView.leadingAnchor
constraintEqualToAnchor:self.contentView.leadingAnchor
constant:kTableViewHorizontalSpacing],
[_switchView.bottomAnchor
constraintEqualToAnchor:self.contentView.bottomAnchor
constant:-kTableViewLargeVerticalSpacing],
[textLayoutGuide.trailingAnchor
constraintEqualToAnchor:self.contentView.trailingAnchor
constant:-kTableViewHorizontalSpacing],
];
[NSLayoutConstraint activateConstraints:@[
[_iconBackground.leadingAnchor
constraintEqualToAnchor:self.contentView.leadingAnchor
constant:kTableViewHorizontalSpacing],
[_iconBackground.widthAnchor
constraintEqualToConstant:kTableViewIconImageSize],
[_iconBackground.heightAnchor
constraintEqualToAnchor:_iconBackground.widthAnchor],
[_iconBackground.centerYAnchor
constraintEqualToAnchor:textLayoutGuide.centerYAnchor],
_iconHiddenConstraint,
[textLayoutGuide.leadingAnchor
constraintEqualToAnchor:_textLabel.leadingAnchor],
[textLayoutGuide.leadingAnchor
constraintEqualToAnchor:_detailTextLabel.leadingAnchor],
[textLayoutGuide.trailingAnchor
constraintEqualToAnchor:_textLabel.trailingAnchor],
[textLayoutGuide.trailingAnchor
constraintEqualToAnchor:_detailTextLabel.trailingAnchor],
[textLayoutGuide.topAnchor constraintEqualToAnchor:_textLabel.topAnchor],
[textLayoutGuide.bottomAnchor
constraintEqualToAnchor:_detailTextLabel.bottomAnchor],
[_textLabel.bottomAnchor
constraintEqualToAnchor:_detailTextLabel.topAnchor],
// Leading constraint for `customSepartor`.
[self.customSeparator.leadingAnchor
constraintEqualToAnchor:_textLabel.leadingAnchor],
]];
if (UIContentSizeCategoryIsAccessibilityCategory(
self.traitCollection.preferredContentSizeCategory)) {
[NSLayoutConstraint activateConstraints:_accessibilityConstraints];
} else {
[NSLayoutConstraint activateConstraints:_standardConstraints];
}
AddOptionalVerticalPadding(self.contentView, textLayoutGuide,
kTableViewOneLabelCellVerticalSpacing);
}
return self;
}
- (void)configureCellWithTitle:(NSString*)title
subtitle:(NSString*)subtitle
switchEnabled:(BOOL)enabled
on:(BOOL)on {
self.textLabel.text = title;
self.detailTextLabel.text = subtitle;
self.switchView.enabled = enabled;
self.switchView.on = on;
self.switchView.accessibilityIdentifier =
[NSString stringWithFormat:@"%@, switch", title];
UIColor* textColor = enabled ? [UIColor colorNamed:kTextPrimaryColor]
: [UIColor colorNamed:kTextSecondaryColor];
self.textLabel.textColor = textColor;
self.selectionStyle = UITableViewCellSelectionStyleNone;
}
- (void)setIconImage:(UIImage*)image
tintColor:(UIColor*)tintColor
backgroundColor:(UIColor*)backgroundColor
cornerRadius:(CGFloat)cornerRadius
borderWidth:(CGFloat)borderWidth {
BOOL hidden = (image == nil);
self.iconImageView.image = image;
self.iconImageView.tintColor = tintColor;
_iconBackground.backgroundColor = backgroundColor;
_iconBackground.layer.cornerRadius = cornerRadius;
_iconBackground.layer.borderColor =
[UIColor colorNamed:kGrey200Color].CGColor;
_iconBackground.layer.borderWidth = borderWidth;
_iconBackground.hidden = hidden;
if (hidden) {
self.iconVisibleConstraint.active = NO;
self.iconHiddenConstraint.active = YES;
} else {
self.iconHiddenConstraint.active = NO;
self.iconVisibleConstraint.active = YES;
}
}
#pragma mark - UIView
- (void)traitCollectionDidChange:(UITraitCollection*)previousTraitCollection {
[super traitCollectionDidChange:previousTraitCollection];
BOOL isCurrentContentSizeAccessibility =
UIContentSizeCategoryIsAccessibilityCategory(
self.traitCollection.preferredContentSizeCategory);
if (UIContentSizeCategoryIsAccessibilityCategory(
previousTraitCollection.preferredContentSizeCategory) !=
isCurrentContentSizeAccessibility) {
if (isCurrentContentSizeAccessibility) {
[NSLayoutConstraint deactivateConstraints:_standardConstraints];
[NSLayoutConstraint activateConstraints:_accessibilityConstraints];
} else {
[NSLayoutConstraint deactivateConstraints:_accessibilityConstraints];
[NSLayoutConstraint activateConstraints:_standardConstraints];
}
}
}
#pragma mark - UITableViewCell
- (void)prepareForReuse {
[super prepareForReuse];
self.textLabel.text = nil;
self.detailTextLabel.text = nil;
[self setIconImage:nil
tintColor:nil
backgroundColor:nil
cornerRadius:0
borderWidth:0];
[_switchView removeTarget:nil
action:nil
forControlEvents:[_switchView allControlEvents]];
}
#pragma mark - UIAccessibility
- (CGPoint)accessibilityActivationPoint {
// Center the activation point over the switch, so that double-tapping toggles
// the switch.
CGRect switchFrame =
UIAccessibilityConvertFrameToScreenCoordinates(_switchView.frame, self);
return CGPointMake(CGRectGetMidX(switchFrame), CGRectGetMidY(switchFrame));
}
- (NSString*)accessibilityHint {
if (_switchView.enabled) {
return _switchView.accessibilityHint;
} else {
return @"";
}
}
- (NSString*)accessibilityLabel {
if (self.customAccessibilityLabel) {
return self.customAccessibilityLabel;
}
if (!self.detailTextLabel.text) {
return self.textLabel.text;
}
return [NSString stringWithFormat:@"%@, %@", self.textLabel.text,
self.detailTextLabel.text];
}
- (void)setAccessibilityLabel:(NSString*)label {
self.customAccessibilityLabel = [label copy];
}
- (NSString*)accessibilityValue {
if (_switchView.on) {
return l10n_util::GetNSString(IDS_IOS_SETTING_ON);
} else {
return l10n_util::GetNSString(IDS_IOS_SETTING_OFF);
}
}
- (UIAccessibilityTraits)accessibilityTraits {
UIAccessibilityTraits accessibilityTraits = super.accessibilityTraits;
if (!self.switchView.isEnabled) {
accessibilityTraits |= UIAccessibilityTraitNotEnabled;
}
return accessibilityTraits;
}
@end
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