desktop: paste files/images to attach to message (#3165)

* desktop: paste files/images to attach to message

* Windows

* copy files inside the app

* change

* encrypted files support

---------

Co-authored-by: Evgeny Poberezkin <2769109+epoberezkin@users.noreply.github.com>

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/platform/PlatformTextField.kt

@@ -4,6 +4,8 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.MutableState
 import androidx.compose.ui.text.TextStyle
 import chat.simplex.common.views.chat.ComposeState
+import java.io.File
+import java.net.URI
 
 @Composable
 expect fun PlatformTextField(
@@ -14,5 +16,6 @@ expect fun PlatformTextField(
   userIsObserver: Boolean,
   onMessageChange: (String) -> Unit,
   onUpArrow: () -> Unit,
+  onFilesPasted: (List<URI>) -> Unit,
   onDone: () -> Unit,
 )

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/TerminalView.kt

@@ -97,6 +97,7 @@ fun TerminalLayout(
             updateLiveMessage = null,
             editPrevMessage = {},
             onMessageChange = ::onMessageChange,
+            onFilesPasted = {},
             textStyle = textStyle
           )
         }

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/ChatView.kt

@@ -458,17 +458,7 @@ fun ChatLayout(
       .fillMaxWidth()
       .desktopOnExternalDrag(
         enabled = !attachmentDisabled.value && rememberUpdatedState(chat.userCanSend).value,
-        onFiles = { paths ->
-          val uris = paths.map { URI.create(it) }
-          val groups =  uris.groupBy { isImage(it) }
-          val images = groups[true] ?: emptyList()
-          val files = groups[false] ?: emptyList()
-          if (images.isNotEmpty()) {
-            CoroutineScope(Dispatchers.IO).launch { composeState.processPickedMedia(images, null) }
-          } else if (files.isNotEmpty()) {
-            composeState.processPickedFile(uris.first(), null)
-          }
-        },
+        onFiles = { paths -> composeState.onFilesAttached(paths.map { URI.create(it) }) },
         onImage = {
           val tmpFile = File.createTempFile("image", ".bmp", tmpDir)
           tmpFile.deleteOnExit()

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/ComposeView.kt

@@ -159,6 +159,17 @@ expect fun AttachmentSelection(
   processPickedMedia: (List<URI>, String?) -> Unit
 )
 
+fun MutableState<ComposeState>.onFilesAttached(uris: List<URI>) {
+  val groups =  uris.groupBy { isImage(it) }
+  val images = groups[true] ?: emptyList()
+  val files = groups[false] ?: emptyList()
+  if (images.isNotEmpty()) {
+    CoroutineScope(Dispatchers.IO).launch { processPickedMedia(images, null) }
+  } else if (files.isNotEmpty()) {
+    processPickedFile(uris.first(), null)
+  }
+}
+
 fun MutableState<ComposeState>.processPickedFile(uri: URI?, text: String?) {
   if (uri != null) {
     val fileSize = getFileSize(uri)
@@ -816,6 +827,7 @@ fun ComposeView(
           chatModel.removeLiveDummy()
         },
         editPrevMessage = ::editPrevMessage,
+        onFilesPasted = { composeState.onFilesAttached(it) },
         onMessageChange = ::onMessageChange,
         textStyle = textStyle
       )

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/SendMsgView.kt

@@ -29,6 +29,8 @@ import chat.simplex.res.MR
 import dev.icerock.moko.resources.compose.stringResource
 import dev.icerock.moko.resources.compose.painterResource
 import kotlinx.coroutines.*
+import java.io.File
+import java.net.URI
 
 @Composable
 fun SendMsgView(
@@ -52,6 +54,7 @@ fun SendMsgView(
   updateLiveMessage: (suspend () -> Unit)? = null,
   cancelLiveMessage: (() -> Unit)? = null,
   editPrevMessage: () -> Unit,
+  onFilesPasted: (List<URI>) -> Unit,
   onMessageChange: (String) -> Unit,
   textStyle: MutableState<TextStyle>
 ) {
@@ -79,7 +82,7 @@ fun SendMsgView(
     val showVoiceButton = !nextSendGrpInv && cs.message.isEmpty() && showVoiceRecordIcon && !composeState.value.editing &&
         cs.liveMessage == null && (cs.preview is ComposePreview.NoPreview || recState.value is RecordingState.Started)
     val showDeleteTextButton = rememberSaveable { mutableStateOf(false) }
-    PlatformTextField(composeState, sendMsgEnabled, textStyle, showDeleteTextButton, userIsObserver, onMessageChange, editPrevMessage) {
+    PlatformTextField(composeState, sendMsgEnabled, textStyle, showDeleteTextButton, userIsObserver, onMessageChange, editPrevMessage, onFilesPasted) {
       if (!cs.inProgress) {
         sendMessage(null)
       }
@@ -612,6 +615,7 @@ fun PreviewSendMsgView() {
       sendMessage = {},
       editPrevMessage = {},
       onMessageChange = { _ -> },
+      onFilesPasted = {},
       textStyle = textStyle
     )
   }
@@ -645,6 +649,7 @@ fun PreviewSendMsgViewEditing() {
       sendMessage = {},
       editPrevMessage = {},
       onMessageChange = { _ -> },
+      onFilesPasted = {},
       textStyle = textStyle
     )
   }
@@ -678,6 +683,7 @@ fun PreviewSendMsgViewInProgress() {
       sendMessage = {},
       editPrevMessage = {},
       onMessageChange = { _ -> },
+      onFilesPasted = {},
       textStyle = textStyle
     )
   }

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/chat/item/ChatItemView.kt

@@ -201,7 +201,7 @@ fun ChatItemView(
               showMenu.value = false
             })
             ItemAction(stringResource(MR.strings.copy_verb), painterResource(MR.images.ic_content_copy), onClick = {
-              clipboard.setText(AnnotatedString(cItem.content.text))
+              copyItemToClipboard(cItem, clipboard)
               showMenu.value = false
             })
             if ((cItem.content.msgContent is MsgContent.MCImage || cItem.content.msgContent is MsgContent.MCVideo || cItem.content.msgContent is MsgContent.MCFile || cItem.content.msgContent is MsgContent.MCVoice) && getLoadedFilePath(cItem.file) != null) {
@@ -561,6 +561,8 @@ private fun showMsgDeliveryErrorAlert(description: String) {
   )
 }
 
+expect fun copyItemToClipboard(cItem: ChatItem, clipboard: ClipboardManager)
+
 @Preview
 @Composable
 fun PreviewChatItemView() {