Merge pull request #797 from GetStream/add/allow-pasting-images-to-composer

Author: nuno-vieira

CHANGELOG.md

@@ -3,7 +3,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 # Upcoming
 
-### 🔄 Changed
+### ✅ Added
+- Allow pasting images to the composer [#797](https://github.com/GetStream/stream-chat-swiftui/pull/797)
 
 # [4.76.0](https://github.com/GetStream/stream-chat-swiftui/releases/tag/4.76.0)
 _March 31, 2025_

Sources/StreamChatSwiftUI/ChatChannel/Composer/ComposerTextInputView.swift

@@ -7,7 +7,7 @@ import UIKit
 
 /// SwiftUI wrapper for a text field with multiple rows.
 struct ComposerTextInputView: UIViewRepresentable {
-
+    @EnvironmentObject var composerViewModel: MessageComposerViewModel
     @Injected(\.utils) private var utils
 
     @Binding var text: String
@@ -33,6 +33,9 @@ struct ComposerTextInputView: UIViewRepresentable {
         inputTextView.placeholderLabel.text = placeholder
         inputTextView.contentInsetAdjustmentBehavior = .never
         inputTextView.setContentCompressionResistancePriority(.streamLow, for: .horizontal)
+        inputTextView.onImagePasted = {
+            composerViewModel.imagePasted($0)
+        }
 
         if utils.messageListConfig.becomesFirstResponderOnOpen {
             inputTextView.becomeFirstResponder()

Sources/StreamChatSwiftUI/ChatChannel/Composer/MessageComposerView.swift

@@ -374,6 +374,7 @@ public struct ComposerInputView<Factory: ViewFactory>: View, KeyboardReadable {
                     maxMessageLength: maxMessageLength,
                     currentHeight: textFieldHeight
                 )
+                .environmentObject(viewModel)
                 .accessibilityIdentifier("ComposerTextInputView")
                 .accessibilityElement(children: .contain)
                 .frame(height: textFieldHeight)

Sources/StreamChatSwiftUI/ChatChannel/Composer/MessageComposerViewModel.swift

@@ -510,6 +510,20 @@ open class MessageComposerViewModel: ObservableObject {
         addedAssets = images
     }
 
+    public func imagePasted(_ image: UIImage) {
+        guard let imageURL = try? image.saveAsJpgToTemporaryUrl() else {
+            log.error("Failed to write image to local temporary file")
+            return
+        }
+        let addedImage = AddedAsset(
+            image: image,
+            id: UUID().uuidString,
+            url: imageURL,
+            type: .image
+        )
+        addedAssets.append(addedImage)
+    }
+    
     public func removeAttachment(with id: String) {
         if id.isURL, let url = URL(string: id) {
             var urls = [URL]()

Sources/StreamChatSwiftUI/Utils/Common/InputTextView.swift

@@ -52,6 +52,8 @@ class InputTextView: UITextView, AccessibilityView {
             }
         }
     }
+    
+    var onImagePasted: ((UIImage) -> Void)?
 
     override open func didMoveToSuperview() {
         super.didMoveToSuperview()
@@ -143,9 +145,22 @@ class InputTextView: UITextView, AccessibilityView {
 
     override open func paste(_ sender: Any?) {
         super.paste(sender)
+        if let pastedImage = UIPasteboard.general.image,
+           let onImagePasted {
+            onImagePasted(pastedImage)
+            return
+        }
         handleTextChange()
         DispatchQueue.main.asyncAfter(deadline: .now() + 0.3) { [weak self] in
             self?.scrollToBottom()
         }
     }
+    
+    override func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool {
+        if action == #selector(paste(_:)) && onImagePasted != nil && UIPasteboard.general.image != nil {
+            return true
+        } else {
+            return super.canPerformAction(action, withSender: sender)
+        }
+    }
 }