Add message approval view.

SignalMessaging/attachments/SharingThreadPickerViewController.m

@@ -133,6 +133,7 @@ typedef void (^SendMessageBlock)(SendCompletionBlock completion);
     }
     NSData *data = self.attachment.data;
     NSString *_Nullable messageText = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
+    DDLogVerbose(@"%@ messageTextForAttachment: %@", self.logTag, messageText);
     return messageText;
 }
 

SignalShareExtension/ShareViewController.swift

@@ -507,8 +507,7 @@ public class ShareViewController: UINavigationController, ShareViewDelegate, SAE
             //
             // NOTE: SharingThreadPickerViewController will try to unpack them
             //       and send them as normal text messages if possible.
-            let urlString = url.absoluteString
-            return DataSourceValue.dataSource(withOversizeText:urlString)
+            return DataSourcePath.dataSource(with: url)
         } else {
             guard let dataSource = DataSourcePath.dataSource(with: url) else {
                 return nil
@@ -579,6 +578,7 @@ public class ShareViewController: UINavigationController, ShareViewDelegate, SAE
                 let fileUrl = URL(fileURLWithPath:tempFilePath)
                 fulfill((fileUrl, srcUtiType))
             } else if let string = provider as? String {
+                Logger.debug("\(self.logTag) string provider: \(string)")
                 guard let data = string.data(using: String.Encoding.utf8) else {
                     let writeError = ShareViewControllerError.assertionError(description: "Error writing item data: \(String(describing: error))")
                     reject(writeError)