Show keyboard when entering special mode (edit/reply/etc.)

libraries/textcomposer/src/main/kotlin/io/element/android/libraries/textcomposer/TextComposer.kt

@@ -46,11 +46,13 @@ import androidx.compose.material3.LocalContentColor
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.TextFieldDefaults
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
+import androidx.compose.ui.ExperimentalComposeUiApi
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.focus.FocusRequester
@@ -60,6 +62,7 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.ColorFilter
 import androidx.compose.ui.graphics.SolidColor
 import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.platform.LocalSoftwareKeyboardController
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.input.VisualTransformation
@@ -82,8 +85,9 @@ import io.element.android.libraries.matrix.ui.components.AttachmentThumbnailInfo
 import io.element.android.libraries.matrix.ui.components.AttachmentThumbnailType
 import io.element.android.libraries.theme.ElementTheme
 import io.element.android.libraries.ui.strings.CommonStrings
+import kotlinx.coroutines.android.awaitFrame
 
-@OptIn(ExperimentalMaterial3Api::class)
+@OptIn(ExperimentalMaterial3Api::class, ExperimentalComposeUiApi::class)
 @Composable
 fun TextComposer(
     composerText: String?,
@@ -195,6 +199,18 @@ fun TextComposer(
             }
         }
     }
+
+    // Request focus when changing mode, and show keyboard.
+    val keyboard = LocalSoftwareKeyboardController.current
+    LaunchedEffect(composerMode) {
+        if (composerMode is MessageComposerMode.Special) {
+            focusRequester.requestFocus()
+            keyboard?.let {
+                awaitFrame()
+                it.show()
+            }
+        }
+    }
 }
 
 @Composable