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/desktopMain/kotlin/chat/simplex/common/platform/PlatformTextField.desktop.kt

@@ -12,7 +12,6 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.focus.FocusRequester
 import androidx.compose.ui.focus.focusRequester
-import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.SolidColor
 import androidx.compose.ui.input.key.*
 import androidx.compose.ui.platform.*
@@ -27,6 +26,9 @@ import chat.simplex.common.views.helpers.generalGetString
 import chat.simplex.res.MR
 import dev.icerock.moko.resources.StringResource
 import kotlinx.coroutines.delay
+import java.io.File
+import java.net.URI
+import kotlin.io.path.*
 import kotlin.math.min
 import kotlin.text.substring
 
@@ -39,6 +41,7 @@ actual fun PlatformTextField(
   userIsObserver: Boolean,
   onMessageChange: (String) -> Unit,
   onUpArrow: () -> Unit,
+  onFilesPasted: (List<URI>) -> Unit,
   onDone: () -> Unit,
 ) {
   val cs = composeState.value
@@ -63,10 +66,20 @@ actual fun PlatformTextField(
   val isRtl = remember(cs.message) { isRtl(cs.message.subSequence(0, min(50, cs.message.length))) }
   var textFieldValueState by remember { mutableStateOf(TextFieldValue(text = cs.message)) }
   val textFieldValue = textFieldValueState.copy(text = cs.message)
+  val clipboard = LocalClipboardManager.current
   BasicTextField(
     value = textFieldValue,
-    onValueChange = {
+    onValueChange = onValueChange@ {
       if (!composeState.value.inProgress && !(composeState.value.preview is ComposePreview.VoicePreview && it.text != "")) {
+        val diff = textFieldValueState.selection.length + (it.text.length - textFieldValueState.text.length)
+        if (diff > 1 && it.text != textFieldValueState.text && it.selection.max - diff >= 0) {
+          val pasted = it.text.substring(it.selection.max - diff, it.selection.max)
+          val files = parseToFiles(AnnotatedString(pasted))
+          if (files.isNotEmpty()) {
+            onFilesPasted(files)
+            return@onValueChange
+          }
+        }
         textFieldValueState = it
         onMessageChange(it.text)
       }
@@ -98,6 +111,12 @@ actual fun PlatformTextField(
         } else if (it.key == Key.DirectionUp && it.type == KeyEventType.KeyDown && cs.message.isEmpty()) {
           onUpArrow()
           true
+        } else if (it.key == Key.V &&
+          it.type == KeyEventType.KeyDown &&
+          ((it.isCtrlPressed && !desktopPlatform.isMac()) || (it.isMetaPressed && desktopPlatform.isMac())) &&
+          parseToFiles(clipboard.getText()).isNotEmpty()) {
+          onFilesPasted(parseToFiles(clipboard.getText()))
+          true
         }
         else false
       },
@@ -142,3 +161,19 @@ private fun ComposeOverlay(textId: StringResource, textStyle: MutableState<TextS
     style = textStyle.value.copy(fontStyle = FontStyle.Italic)
   )
 }
+
+private fun parseToFiles(text: AnnotatedString?): List<URI> {
+  text ?: return emptyList()
+  val files = ArrayList<URI>()
+  text.lines().forEach {
+    try {
+      val uri = File(it.removePrefix("\"").removeSuffix("\"")).toURI()
+      val path = uri.toPath()
+      if (!path.exists() || !path.isAbsolute || path.isDirectory()) return emptyList()
+      files.add(uri)
+    } catch (e: Exception) {
+      return emptyList()
+    }
+  }
+  return files
+}

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

@@ -7,17 +7,19 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.MutableState
 import androidx.compose.ui.Modifier
 import androidx.compose.foundation.layout.padding
+import androidx.compose.ui.platform.ClipboardManager
 import androidx.compose.ui.platform.LocalDensity
+import androidx.compose.ui.text.AnnotatedString
 import androidx.compose.ui.unit.*
-import chat.simplex.common.model.ChatItem
-import chat.simplex.common.model.MsgContent
-import chat.simplex.common.platform.FileChooserLauncher
-import chat.simplex.common.platform.desktopPlatform
+import chat.simplex.common.model.*
+import chat.simplex.common.platform.*
 import chat.simplex.common.ui.theme.EmojiFont
 import chat.simplex.common.views.helpers.*
 import chat.simplex.res.MR
 import dev.icerock.moko.resources.compose.painterResource
 import dev.icerock.moko.resources.compose.stringResource
+import java.io.File
+import java.util.*
 
 @Composable
 actual fun ReactionIcon(text: String, fontSize: TextUnit) {
@@ -39,3 +41,23 @@ actual fun SaveContentItemAction(cItem: ChatItem, saveFileLauncher: FileChooserL
     showMenu.value = false
   })
 }
+
+actual fun copyItemToClipboard(cItem: ChatItem, clipboard: ClipboardManager) {
+  val fileSource = getLoadedFileSource(cItem.file)
+  if (fileSource != null) {
+    val filePath: String = if (fileSource.cryptoArgs != null) {
+      val tmpFile = File(tmpDir, fileSource.filePath)
+      tmpFile.deleteOnExit()
+      decryptCryptoFile(getAppFilePath(fileSource.filePath), fileSource.cryptoArgs, tmpFile.absolutePath)
+      tmpFile.absolutePath
+    } else {
+      getAppFilePath(fileSource.filePath)
+    }
+    when  {
+      desktopPlatform.isWindows() -> clipboard.setText(AnnotatedString("\"${File(filePath).absolutePath}\""))
+      else -> clipboard.setText(AnnotatedString(filePath))
+    }
+  } else {
+    clipboard.setText(AnnotatedString(cItem.content.text))
+  }
+}