copy / paste images directly

Session/Conversations/ConversationVC+Interaction.swift

@@ -49,6 +49,16 @@ extension ConversationVC : InputViewDelegate, MessageCellDelegate, ContextMenuAc
     }
 
     // MARK: Attachments
+    func didPasteImageFromPasteboard(_ image: UIImage) {
+        guard let imageData = image.jpegData(compressionQuality: 1.0) else { return }
+        let dataSource = DataSourceValue.dataSource(with: imageData, utiType: kUTTypeJPEG as String)
+        let attachment = SignalAttachment.attachment(dataSource: dataSource, dataUTI: kUTTypeJPEG as String, imageQuality: .medium)
+        
+        let sendMediaNavController = SendMediaNavigationController.showingWithImage(attachment, delegate: self)
+        sendMediaNavController.modalPresentationStyle = .fullScreen
+        self.present(sendMediaNavController, animated: true, completion: nil)
+    }
+    
     func sendMediaNavDidCancel(_ sendMediaNavigationController: SendMediaNavigationController) {
         dismiss(animated: true, completion: nil)
     }

Session/Conversations/Input View/InputTextView.swift

@@ -38,6 +38,22 @@ public final class InputTextView : UITextView, UITextViewDelegate {
         preconditionFailure("Use init(delegate:) instead.")
     }
     
+    public override func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool {
+        if action == #selector(paste(_:)) {
+            if let _ = UIPasteboard.general.image {
+                return true
+            }
+        }
+        return super.canPerformAction(action, withSender: sender)
+    }
+    
+    public override func paste(_ sender: Any?) {
+        if let image = UIPasteboard.general.image {
+            snDelegate?.didPasteImageFromPasteboard(self, image: image)
+        }
+        super.paste(sender)
+    }
+
     private func setUpViewHierarchy() {
         showsHorizontalScrollIndicator = false
         showsVerticalScrollIndicator = false
@@ -80,4 +96,5 @@ protocol InputTextViewDelegate : AnyObject {
     
     func inputTextViewDidChangeSize(_ inputTextView: InputTextView)
     func inputTextViewDidChangeContent(_ inputTextView: InputTextView)
+    func didPasteImageFromPasteboard(_ inputTextView: InputTextView, image: UIImage)
 }

Session/Conversations/Input View/InputView.swift

@@ -144,6 +144,10 @@ final class InputView : UIView, InputViewButtonDelegate, InputTextViewDelegate,
         delegate?.inputTextViewDidChangeContent(inputTextView)
     }
     
+    func didPasteImageFromPasteboard(_ inputTextView: InputTextView, image: UIImage) {
+        delegate?.didPasteImageFromPasteboard(image)
+    }
+
     // We want to show either a link preview or a quote draft, but never both at the same time. When trying to
     // generate a link preview, wait until we're sure that we'll be able to build a link preview from the given
     // URL before removing the quote draft.
@@ -351,4 +355,5 @@ protocol InputViewDelegate : AnyObject, ExpandingAttachmentsButtonDelegate, Voic
     func handleQuoteViewCancelButtonTapped()
     func inputTextViewDidChangeContent(_ inputTextView: InputTextView)
     func handleMentionSelected(_ mention: Mention, from view: MentionSelectionView)
+    func didPasteImageFromPasteboard(_ image: UIImage)
 }

Session/Media Viewing & Editing/SendMediaNavigationController.swift

@@ -59,6 +59,17 @@ class SendMediaNavigationController: OWSNavigationController {
     @objc
     public weak var sendMediaNavDelegate: SendMediaNavDelegate?
     
+    @objc class func showingWithImage(_ attachment: SignalAttachment, delegate: SendMediaNavDelegate) -> SendMediaNavigationController {
+        let navController = SendMediaNavigationController()
+        navController.sendMediaNavDelegate = delegate
+        let approvalViewController = AttachmentApprovalViewController(mode: .modal, attachments: [ attachment ])
+        approvalViewController.approvalDelegate = navController
+        approvalViewController.messageText = delegate.sendMediaNavInitialMessageText(navController)
+        navController.setViewControllers([approvalViewController], animated: false)
+
+        return navController
+    }
+
     @objc
     public class func showingCameraFirst() -> SendMediaNavigationController {
         let navController = SendMediaNavigationController()