desktop: edit previous message with Up arrow (#2841)

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

@@ -48,6 +48,7 @@ actual fun PlatformTextField(
   showDeleteTextButton: MutableState<Boolean>,
   userIsObserver: Boolean,
   onMessageChange: (String) -> Unit,
+  onUpArrow: () -> Unit,
   onDone: () -> Unit,
 ) {
   val cs = composeState.value

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

@@ -12,5 +12,6 @@ expect fun PlatformTextField(
   showDeleteTextButton: MutableState<Boolean>,
   userIsObserver: Boolean,
   onMessageChange: (String) -> Unit,
+  onUpArrow: () -> Unit,
   onDone: () -> Unit,
 )

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

@@ -93,6 +93,7 @@ fun TerminalLayout(
             sendMessage = { sendCommand() },
             sendLiveMessage = null,
             updateLiveMessage = null,
+            editPrevMessage = {},
             onMessageChange = ::onMessageChange,
             textStyle = textStyle
           )

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

@@ -556,6 +556,14 @@ fun ComposeView(
     }
   }
 
+  fun editPrevMessage() {
+    if (composeState.value.contextItem != ComposeContextItem.NoContextItem || composeState.value.preview != ComposePreview.NoPreview) return
+    val lastEditable = chatModel.chatItems.findLast { it.meta.editable }
+    if (lastEditable != null) {
+      composeState.value = ComposeState(editingItem = lastEditable, useLinkPreviews = useLinkPreviews)
+    }
+  }
+
   @Composable
   fun previewView() {
     when (val preview = composeState.value.preview) {
@@ -754,6 +762,7 @@ fun ComposeView(
           composeState.value = composeState.value.copy(liveMessage = null)
           chatModel.removeLiveDummy()
         },
+        editPrevMessage = ::editPrevMessage,
         onMessageChange = ::onMessageChange,
         textStyle = textStyle
       )

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

@@ -48,6 +48,7 @@ fun SendMsgView(
   sendLiveMessage: (suspend () -> Unit)? = null,
   updateLiveMessage: (suspend () -> Unit)? = null,
   cancelLiveMessage: (() -> Unit)? = null,
+  editPrevMessage: () -> Unit,
   onMessageChange: (String) -> Unit,
   textStyle: MutableState<TextStyle>
 ) {
@@ -67,7 +68,7 @@ fun SendMsgView(
     val showVoiceButton = 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, textStyle, showDeleteTextButton, userIsObserver, onMessageChange) {
+    PlatformTextField(composeState, textStyle, showDeleteTextButton, userIsObserver, onMessageChange, editPrevMessage) {
       sendMessage(null)
     }
     // Disable clicks on text field
@@ -593,6 +594,7 @@ fun PreviewSendMsgView() {
       allowVoiceToContact = {},
       timedMessageAllowed = false,
       sendMessage = {},
+      editPrevMessage = {},
       onMessageChange = { _ -> },
       textStyle = textStyle
     )
@@ -623,6 +625,7 @@ fun PreviewSendMsgViewEditing() {
       allowVoiceToContact = {},
       timedMessageAllowed = false,
       sendMessage = {},
+      editPrevMessage = {},
       onMessageChange = { _ -> },
       textStyle = textStyle
     )
@@ -653,6 +656,7 @@ fun PreviewSendMsgViewInProgress() {
       allowVoiceToContact = {},
       timedMessageAllowed = false,
       sendMessage = {},
+      editPrevMessage = {},
       onMessageChange = { _ -> },
       textStyle = textStyle
     )

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

@@ -37,6 +37,7 @@ actual fun PlatformTextField(
   showDeleteTextButton: MutableState<Boolean>,
   userIsObserver: Boolean,
   onMessageChange: (String) -> Unit,
+  onUpArrow: () -> Unit,
   onDone: () -> Unit,
 ) {
   val cs = composeState.value
@@ -83,7 +84,11 @@ actual fun PlatformTextField(
             onDone()
           }
           true
-        } else false
+        } else if (it.key == Key.DirectionUp && it.type == KeyEventType.KeyDown && cs.message.isEmpty()) {
+          onUpArrow()
+          true
+        }
+        else false
       },
     cursorBrush = SolidColor(MaterialTheme.colors.secondary),
     decorationBox = { innerTextField ->