Respond to CR.

SignalMessaging/Views/OWSFlatButton.swift

@@ -1,5 +1,5 @@
 //
-//  Copyright (c) 2017 Open Whisper Systems. All rights reserved.
+//  Copyright (c) 2018 Open Whisper Systems. All rights reserved.
 //
 
 import Foundation
@@ -51,7 +51,7 @@ public class OWSFlatButton: UIView {
                              backgroundColor: UIColor,
                              width: CGFloat,
                              height: CGFloat,
-                             target:Any,
+                             target: Any,
                              selector: Selector) -> OWSFlatButton {
         let button = OWSFlatButton()
         button.setTitle(title:title,
@@ -70,7 +70,7 @@ public class OWSFlatButton: UIView {
                              backgroundColor: UIColor,
                              width: CGFloat,
                              height: CGFloat,
-                             target:Any,
+                             target: Any,
                              selector: Selector) -> OWSFlatButton {
         return OWSFlatButton.button(title:title,
                                     font:fontForHeight(height),
@@ -87,7 +87,7 @@ public class OWSFlatButton: UIView {
                              font: UIFont,
                              titleColor: UIColor,
                              backgroundColor: UIColor,
-                             target:Any,
+                             target: Any,
                              selector: Selector) -> OWSFlatButton {
         let button = OWSFlatButton()
         button.setTitle(title:title,
@@ -104,7 +104,7 @@ public class OWSFlatButton: UIView {
         // Cap the "button height" at 40pt or button text can look
         // excessively large.
         let fontPointSize = round(min(40, height) * 0.45)
-        return UIFont.ows_mediumFont(withSize:fontPointSize)!
+        return UIFont.ows_mediumFont(withSize:fontPointSize)
     }
 
     // MARK: Methods
@@ -150,7 +150,7 @@ public class OWSFlatButton: UIView {
     }
 
     @objc
-    public func addTarget(target:Any,
+    public func addTarget(target: Any,
                           selector: Selector) {
         button.addTarget(target, action:selector, for:.touchUpInside)
     }

SignalMessaging/attachments/MessageApprovalViewController.swift

@@ -131,10 +131,7 @@ public class MessageApprovalViewController: OWSViewController, UITextViewDelegat
         bottomBorder.autoPinBottomToSuperview()
         bottomBorder.autoSetDimension(.height, toSize: borderThickness)
 
-        guard let font = UIFont.ows_regularFont(withSize:ScaleFromIPhone5To7Plus(14.0, 18.0)) else {
-            owsFail("Can't load font")
-            return recipientRow
-        }
+        let font = UIFont.ows_regularFont(withSize:ScaleFromIPhone5To7Plus(14.0, 18.0))
         let hSpacing = CGFloat(10)
         let hMargin = CGFloat(15)
         let vSpacing = CGFloat(5)

SignalMessaging/attachments/SharingThreadPickerViewController.m

@@ -183,6 +183,8 @@ typedef void (^SendMessageBlock)(SendCompletionBlock completion);
 {
     [ThreadUtil addThreadToProfileWhitelistIfEmptyContactThread:self.thread];
     [self tryToSendMessageWithBlock:^(SendCompletionBlock sendCompletion) {
+        OWSAssertIsOnMainThread();
+
         __block TSOutgoingMessage *outgoingMessage = nil;
         outgoingMessage = [ThreadUtil sendMessageWithAttachment:attachment
                                                        inThread:self.thread
@@ -190,6 +192,9 @@ typedef void (^SendMessageBlock)(SendCompletionBlock completion);
                                                      completion:^(NSError *_Nullable error) {
                                                          sendCompletion(error, outgoingMessage);
                                                      }];
+
+        // This is necessary to show progress.
+        self.outgoingMessage = outgoingMessage;
     }
                  fromViewController:approvalViewController];
 }
@@ -209,6 +214,8 @@ typedef void (^SendMessageBlock)(SendCompletionBlock completion);
 
     [ThreadUtil addThreadToProfileWhitelistIfEmptyContactThread:self.thread];
     [self tryToSendMessageWithBlock:^(SendCompletionBlock sendCompletion) {
+        OWSAssertIsOnMainThread();
+
         __block TSOutgoingMessage *outgoingMessage = nil;
         outgoingMessage = [ThreadUtil sendMessageWithText:messageText
             inThread:self.thread
@@ -219,6 +226,9 @@ typedef void (^SendMessageBlock)(SendCompletionBlock completion);
             failure:^(NSError *_Nonnull error) {
                 sendCompletion(error, outgoingMessage);
             }];
+
+        // This is necessary to show progress.
+        self.outgoingMessage = outgoingMessage;
     }
                  fromViewController:approvalViewController];
 }
@@ -229,7 +239,6 @@ typedef void (^SendMessageBlock)(SendCompletionBlock completion);
 }
 
 #pragma mark - Helpers
-typedef void (^SendMessageBlock)(SendCompletionBlock completion);
 
 - (void)tryToSendMessageWithBlock:(SendMessageBlock)sendMessageBlock
                fromViewController:(UIViewController *)fromViewController

SignalMessaging/categories/UIFont+OWS.h

@@ -1,9 +1,11 @@
 //
-//  Copyright (c) 2017 Open Whisper Systems. All rights reserved.
+//  Copyright (c) 2018 Open Whisper Systems. All rights reserved.
 //
 
 #import <UIKit/UIKit.h>
 
+NS_ASSUME_NONNULL_BEGIN
+
 @interface UIFont (OWS)
 
 + (UIFont *)ows_thinFontWithSize:(CGFloat)size;
@@ -31,3 +33,5 @@
 + (UIFont *)ows_footnoteFont;
 
 @end
+
+NS_ASSUME_NONNULL_END

SignalMessaging/categories/UIFont+OWS.m

@@ -1,9 +1,11 @@
 //
-//  Copyright (c) 2017 Open Whisper Systems. All rights reserved.
+//  Copyright (c) 2018 Open Whisper Systems. All rights reserved.
 //
 
 #import "UIFont+OWS.h"
 
+NS_ASSUME_NONNULL_BEGIN
+
 @implementation UIFont (OWS)
 
 + (UIFont *)ows_thinFontWithSize:(CGFloat)size
@@ -105,3 +107,5 @@
 }
 
 @end
+
+NS_ASSUME_NONNULL_END

SignalShareExtension/ShareViewController.swift

@@ -540,7 +540,7 @@ public class ShareViewController: UINavigationController, ShareViewDelegate, SAE
         }
         Logger.debug("\(logTag) matched utiType: \(srcUtiType)")
 
-        let (promise, fulfill, reject) = Promise<(URL, String)>.pending()
+        let (promise, fulfill, reject) = Promise<(itemUrl: URL, utiType: String)>.pending()
 
         var customFileName: String?
         var isConvertibleToTextMessage = false
@@ -576,7 +576,7 @@ public class ShareViewController: UINavigationController, ShareViewDelegate, SAE
                     return
                 }
                 let fileUrl = URL(fileURLWithPath:tempFilePath)
-                fulfill((fileUrl, srcUtiType))
+                fulfill((itemUrl: fileUrl, utiType: srcUtiType))
             } else if let string = value as? String {
                 Logger.debug("\(self.logTag) string provider: \(string)")
                 guard let data = string.data(using: String.Encoding.utf8) else {
@@ -595,18 +595,18 @@ public class ShareViewController: UINavigationController, ShareViewDelegate, SAE
                 isConvertibleToTextMessage = !itemProvider.registeredTypeIdentifiers.contains(kUTTypeFileURL as String)
 
                 if UTTypeConformsTo(srcUtiType as CFString, kUTTypeText) {
-                    fulfill((fileUrl, srcUtiType))
+                    fulfill((itemUrl: fileUrl, utiType: srcUtiType))
                 } else {
-                    fulfill((fileUrl, kUTTypeText as String))
+                    fulfill((itemUrl: fileUrl, utiType:  kUTTypeText as String))
                 }
             } else if let url = value as? URL {
                 // If the share itself is a URL (e.g. a link from Safari), try to send this as a text message.
                 isConvertibleToTextMessage = (itemProvider.registeredTypeIdentifiers.contains(kUTTypeURL as String) &&
                     !itemProvider.registeredTypeIdentifiers.contains(kUTTypeFileURL as String))
                 if isConvertibleToTextMessage {
-                    fulfill((url, kUTTypeURL as String))
+                    fulfill((itemUrl: url, utiType: kUTTypeURL as String))
                 } else {
-                    fulfill((url, srcUtiType))
+                    fulfill((itemUrl: url, utiType: srcUtiType))
                 }
             } else {
                 // It's unavoidable that we may sometimes receives data types that we
@@ -633,7 +633,7 @@ public class ShareViewController: UINavigationController, ShareViewDelegate, SAE
 
             Logger.debug("\(self.logTag) building DataSource with url: \(url), utiType: \(utiType)")
 
-            guard let dataSource = ShareViewController.createDataSource(utiType : utiType, url : url, customFileName : customFileName) else {
+            guard let dataSource = ShareViewController.createDataSource(utiType: utiType, url: url, customFileName: customFileName) else {
                 throw ShareViewControllerError.assertionError(description: "Unable to read attachment data")
             }