Fix contact table cell and “add to block list” view.

// FREEBIE

Signal/src/UIView+OWS.h

@@ -60,6 +60,27 @@ CGFloat ScaleFromIPhone5(CGFloat iPhone5Value);
 
 - (void)centerOnSuperview;
 
+#pragma mark - RTL
+
+// For correct right-to-left layout behavior, use "leading" and "trailing",
+// not "left" and "right".
+//
+// NOTE: the margin values are inverted in RTL layouts.
+- (BOOL)isRTL;
+- (void)autoPinLeadingAndTrailingToSuperview;
+- (void)autoPinLeadingToSuperView;
+- (void)autoPinLeadingToSuperViewWithMargin:(CGFloat)margin;
+- (void)autoPinTrailingToSuperView;
+- (void)autoPinTrailingToSuperViewWithMargin:(CGFloat)margin;
+- (void)autoPinLeadingToTrailingOfView:(UIView *)view;
+- (void)autoPinLeadingToTrailingOfView:(UIView *)view margin:(CGFloat)margin;
+- (void)autoPinLeadingToView:(UIView *)view;
+- (void)autoPinLeadingToView:(UIView *)view margin:(CGFloat)margin;
+- (void)autoPinTrailingToView:(UIView *)view;
+- (void)autoPinTrailingToView:(UIView *)view margin:(CGFloat)margin;
+// Return Right on LTR and Right on RTL.
+- (NSTextAlignment)textAlignmentUnnatural;
+
 #pragma mark - Debugging
 
 - (void)addBorderWithColor:(UIColor *)color;

Signal/src/UIView+OWS.m

@@ -35,6 +35,7 @@ CGFloat ScaleFromIPhone5(CGFloat iPhone5Value)
 {
     [self autoPinEdge:ALEdgeLeft toEdge:ALEdgeLeft ofView:self.superview withOffset:+margin];
     [self autoPinEdge:ALEdgeRight toEdge:ALEdgeRight ofView:self.superview withOffset:-margin];
+    // TODO:
 }
 
 - (void)autoPinWidthToSuperview
@@ -43,6 +44,12 @@ CGFloat ScaleFromIPhone5(CGFloat iPhone5Value)
     [self autoPinEdge:ALEdgeRight toEdge:ALEdgeRight ofView:self.superview];
 }
 
+- (void)autoPinLeadingAndTrailingToSuperview
+{
+    [self autoPinLeadingToSuperView];
+    [self autoPinTrailingToSuperView];
+}
+
 - (void)autoPinHeightToSuperviewWithMargin:(CGFloat)margin
 {
     [self autoPinEdge:ALEdgeTop toEdge:ALEdgeTop ofView:self.superview withOffset:+margin];
@@ -204,6 +211,93 @@ CGFloat ScaleFromIPhone5(CGFloat iPhone5Value)
         self.height);
 }
 
+#pragma mark - RTL
+
+- (BOOL)isRTL
+{
+    return ([UIView userInterfaceLayoutDirectionForSemanticContentAttribute:self.semanticContentAttribute]
+        == UIUserInterfaceLayoutDirectionRightToLeft);
+}
+
+- (CGFloat)rtlSafeConstant:(CGFloat)value
+{
+    return (self.isRTL ? -value : value);
+}
+
+- (void)autoPinLeadingToSuperView
+{
+    [self autoPinLeadingToSuperViewWithMargin:0];
+}
+
+- (void)autoPinLeadingToSuperViewWithMargin:(CGFloat)margin
+{
+    [self.leadingAnchor constraintEqualToAnchor:self.superview.layoutMarginsGuide.leadingAnchor
+                                       constant:[self rtlSafeConstant:margin]]
+        .active
+        = YES;
+}
+
+- (void)autoPinTrailingToSuperView
+{
+    [self autoPinTrailingToSuperViewWithMargin:0];
+}
+
+- (void)autoPinTrailingToSuperViewWithMargin:(CGFloat)margin
+{
+    [self.trailingAnchor constraintEqualToAnchor:self.superview.layoutMarginsGuide.trailingAnchor
+                                        constant:[self rtlSafeConstant:margin]]
+        .active
+        = YES;
+}
+
+- (void)autoPinLeadingToTrailingOfView:(UIView *)view
+{
+    OWSAssert(view);
+
+    [self autoPinLeadingToTrailingOfView:view margin:0];
+}
+
+- (void)autoPinLeadingToTrailingOfView:(UIView *)view margin:(CGFloat)margin
+{
+    OWSAssert(view);
+
+    [self.leadingAnchor constraintEqualToAnchor:view.trailingAnchor constant:margin].active = YES;
+}
+
+- (void)autoPinLeadingToView:(UIView *)view
+{
+    OWSAssert(view);
+
+    [self autoPinLeadingToView:view margin:0];
+}
+
+- (void)autoPinLeadingToView:(UIView *)view margin:(CGFloat)margin
+{
+    OWSAssert(view);
+
+    [self.leadingAnchor constraintEqualToAnchor:view.leadingAnchor constant:[self rtlSafeConstant:margin]].active = YES;
+}
+
+- (void)autoPinTrailingToView:(UIView *)view
+{
+    OWSAssert(view);
+
+    [self autoPinTrailingToView:view margin:0];
+}
+
+- (void)autoPinTrailingToView:(UIView *)view margin:(CGFloat)margin
+{
+    OWSAssert(view);
+
+    [self.trailingAnchor constraintEqualToAnchor:view.trailingAnchor constant:[self rtlSafeConstant:margin]].active
+        = YES;
+}
+
+- (NSTextAlignment)textAlignmentUnnatural
+{
+    return (self.isRTL ? NSTextAlignmentLeft : NSTextAlignmentRight);
+}
+
 #pragma mark - Debugging
 
 - (void)addBorderWithColor:(UIColor *)color

Signal/src/ViewControllers/SelectRecipientViewController.m

@@ -158,7 +158,7 @@ NSString *const kSelectRecipientViewControllerCellIdentifier = @"kSelectRecipien
     if (!_phoneNumberTextField) {
         _phoneNumberTextField = [UITextField new];
         _phoneNumberTextField.font = [UIFont ows_mediumFontWithSize:18.f];
-        _phoneNumberTextField.textAlignment = NSTextAlignmentRight;
+        _phoneNumberTextField.textAlignment = _phoneNumberTextField.textAlignmentUnnatural;
         _phoneNumberTextField.textColor = [UIColor ows_materialBlueColor];
         _phoneNumberTextField.placeholder = NSLocalizedString(
             @"REGISTRATION_ENTERNUMBER_DEFAULT_TEXT", @"Placeholder text for the phone number textfield");
@@ -200,13 +200,14 @@ NSString *const kSelectRecipientViewControllerCellIdentifier = @"kSelectRecipien
 {
     UIView *row = [UIView new];
     [superview addSubview:row];
-    [row autoPinWidthToSuperview];
+    [row autoPinLeadingAndTrailingToSuperview];
     if (previousRow) {
         [row autoPinEdge:ALEdgeTop toEdge:ALEdgeBottom ofView:previousRow withOffset:0];
     } else {
         [row autoPinEdgeToSuperviewEdge:ALEdgeTop];
     }
     [row autoSetDimension:ALDimensionHeight toSize:height];
+    row.layoutMargins = UIEdgeInsetsMake(0, 0, 0, 0);
     return row;
 }
 
@@ -455,6 +456,8 @@ NSString *const kSelectRecipientViewControllerCellIdentifier = @"kSelectRecipien
         OWSAssert(strongSelf);
 
         UITableViewCell *cell = [UITableViewCell new];
+        cell.preservesSuperviewLayoutMargins = YES;
+        cell.contentView.preservesSuperviewLayoutMargins = YES;
 
         // Country Row
         UIView *countryRow = [self createRowWithHeight:kCountryRowHeight previousRow:nil superview:cell.contentView];
@@ -463,11 +466,11 @@ NSString *const kSelectRecipientViewControllerCellIdentifier = @"kSelectRecipien
 
         UILabel *countryCodeLabel = self.countryCodeLabel;
         [countryRow addSubview:countryCodeLabel];
-        [countryCodeLabel autoPinEdgeToSuperviewEdge:ALEdgeLeft withInset:20.f];
+        [countryCodeLabel autoPinLeadingToSuperView];
         [countryCodeLabel autoVCenterInSuperview];
 
         [countryRow addSubview:self.countryCodeButton];
-        [self.countryCodeButton autoPinEdgeToSuperviewEdge:ALEdgeRight withInset:20.f];
+        [self.countryCodeButton autoPinTrailingToSuperView];
         [self.countryCodeButton autoVCenterInSuperview];
 
         // Phone Number Row
@@ -479,12 +482,12 @@ NSString *const kSelectRecipientViewControllerCellIdentifier = @"kSelectRecipien
 
         UILabel *phoneNumberLabel = self.phoneNumberLabel;
         [phoneNumberRow addSubview:phoneNumberLabel];
-        [phoneNumberLabel autoPinEdgeToSuperviewEdge:ALEdgeLeft withInset:20.f];
+        [phoneNumberLabel autoPinLeadingToSuperView];
         [phoneNumberLabel autoVCenterInSuperview];
 
         [phoneNumberRow addSubview:self.phoneNumberTextField];
-        [self.phoneNumberTextField autoPinEdgeToSuperviewEdge:ALEdgeRight withInset:20.f];
+        [self.phoneNumberTextField autoPinLeadingToTrailingOfView:phoneNumberLabel margin:10.f];
-        [self.phoneNumberTextField autoPinEdge:ALEdgeLeft toEdge:ALEdgeRight ofView:phoneNumberLabel withOffset:0];
+        [self.phoneNumberTextField autoPinTrailingToSuperView];
         [self.phoneNumberTextField autoVCenterInSuperview];
 
         // Example row.
@@ -493,14 +496,14 @@ NSString *const kSelectRecipientViewControllerCellIdentifier = @"kSelectRecipien
                                                         superview:cell.contentView];
         [examplePhoneNumberRow addSubview:self.examplePhoneNumberLabel];
         [self.examplePhoneNumberLabel autoVCenterInSuperview];
-        [self.examplePhoneNumberLabel autoPinEdgeToSuperviewEdge:ALEdgeRight withInset:20.f];
+        [self.examplePhoneNumberLabel autoPinTrailingToSuperView];
 
         // Phone Number Button Row
         UIView *buttonRow =
             [self createRowWithHeight:kButtonRowHeight previousRow:examplePhoneNumberRow superview:cell.contentView];
         [buttonRow addSubview:self.phoneNumberButton];
         [self.phoneNumberButton autoVCenterInSuperview];
-        [self.phoneNumberButton autoPinEdgeToSuperviewEdge:ALEdgeRight withInset:20.f];
+        [self.phoneNumberButton autoPinTrailingToSuperView];
 
         [buttonRow autoPinEdgeToSuperviewEdge:ALEdgeBottom];
 

Signal/src/views/ContactTableViewCell.m

@@ -66,14 +66,14 @@ const NSUInteger kContactTableViewCellAvatarSize = 40;
     [self.contentView addSubview:_nameLabel];
 
     [_avatarView autoVCenterInSuperview];
-    [_avatarView.leadingAnchor constraintEqualToAnchor:self.contentView.layoutMarginsGuide.leadingAnchor].active = YES;
+    [_avatarView autoPinLeadingToSuperView];
     [_avatarView autoSetDimension:ALDimensionWidth toSize:kContactTableViewCellAvatarSize];
     [_avatarView autoSetDimension:ALDimensionHeight toSize:kContactTableViewCellAvatarSize];
 
     [_nameLabel autoPinEdgeToSuperviewEdge:ALEdgeTop];
     [_nameLabel autoPinEdgeToSuperviewEdge:ALEdgeBottom];
-    [_nameLabel.leadingAnchor constraintEqualToAnchor:_avatarView.trailingAnchor constant:12.f].active = YES;
+    [_nameLabel autoPinLeadingToTrailingOfView:_avatarView margin:12.f];
-    [_nameLabel.trailingAnchor constraintEqualToAnchor:self.contentView.layoutMarginsGuide.trailingAnchor].active = YES;
+    [_nameLabel autoPinTrailingToSuperView];
 
     // Force layout, since imageView isn't being initally rendered on App Store optimized build.
     [self layoutSubviews];