Copy from output and history

feature/calculator/src/main/java/com/sadellie/unitto/feature/calculator/CalculatorScreen.kt

@@ -33,6 +33,7 @@ import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.sizeIn
 import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.selection.SelectionContainer
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Delete
 import androidx.compose.material.icons.outlined.MoreVert
@@ -44,6 +45,7 @@ import androidx.compose.material3.Text
 import androidx.compose.material3.TextButton
 import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
@@ -53,7 +55,11 @@ import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.layout.onPlaced
+import androidx.compose.ui.platform.LocalClipboardManager
+import androidx.compose.ui.platform.LocalTextToolbar
+import androidx.compose.ui.platform.LocalView
 import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.AnnotatedString
 import androidx.compose.ui.text.input.TextFieldValue
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.tooling.preview.Preview
@@ -69,6 +75,7 @@ import com.sadellie.unitto.feature.calculator.components.CalculatorKeyboard
 import com.sadellie.unitto.feature.calculator.components.DragDownView
 import com.sadellie.unitto.feature.calculator.components.HistoryList
 import com.sadellie.unitto.feature.calculator.components.InputTextField
+import com.sadellie.unitto.feature.calculator.components.UnittoTextToolbar
 import kotlinx.coroutines.launch
 import java.text.SimpleDateFormat
 import java.util.*
@@ -81,8 +88,24 @@ internal fun CalculatorRoute(
     navigateToSettings: () -> Unit,
     viewModel: CalculatorViewModel = hiltViewModel()
 ) {
+    val clipboardManager = LocalClipboardManager.current
     val uiState = viewModel.uiState.collectAsStateWithLifecycle()
 
+    fun copyToClipboard() {
+        val clipboardText = clipboardManager.getText() ?: return
+        // This method is called immediately after copying formatted text, we replace it with the
+        // the unformatted version.
+        clipboardManager.setText(
+            AnnotatedString(Formatter.removeFormat(clipboardText.text))
+        )
+    }
+
+    CompositionLocalProvider(
+        LocalTextToolbar provides UnittoTextToolbar(
+            view = LocalView.current,
+            copyCallback = ::copyToClipboard
+        )
+    ) {
         CalculatorScreen(
             uiState = uiState.value,
             navigateToMenu = navigateToMenu,
@@ -95,6 +118,7 @@ internal fun CalculatorRoute(
             evaluate = viewModel::evaluate,
             clearHistory = viewModel::clearHistory
         )
+    }
 }
 
 @Composable
@@ -209,6 +233,7 @@ private fun CalculatorScreen(
                         pasteCallback = addSymbol,
                         cutCallback = deleteSymbol
                     )
+                    SelectionContainer {
                         Text(
                             modifier = Modifier
                                 .fillMaxWidth()
@@ -219,6 +244,7 @@ private fun CalculatorScreen(
                             color = MaterialTheme.colorScheme.onSurfaceVariant.copy(alpha = 0.6f),
                             style = NumbersTextStyleDisplayMedium,
                         )
+                    }
                     // Handle
                     Box(
                         Modifier

feature/calculator/src/main/java/com/sadellie/unitto/feature/calculator/components/HistoryList.kt

@@ -30,6 +30,7 @@ import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.items
 import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.text.selection.SelectionContainer
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.History
 import androidx.compose.material3.Icon
@@ -115,6 +116,7 @@ private fun HistoryListItem(
     historyItem: HistoryItem,
     onTextClick: (String) -> Unit
 ) {
+    SelectionContainer {
         Column(modifier = modifier) {
             Box(
                 Modifier.clickable { onTextClick(historyItem.expression) }
@@ -147,6 +149,7 @@ private fun HistoryListItem(
                 )
             }
         }
+    }
 }
 
 @Preview

feature/calculator/src/main/java/com/sadellie/unitto/feature/calculator/components/InputTextField.kt

@@ -30,7 +30,6 @@ import androidx.compose.ui.platform.LocalClipboardManager
 import androidx.compose.ui.platform.LocalTextInputService
 import androidx.compose.ui.platform.LocalTextToolbar
 import androidx.compose.ui.platform.LocalView
-import androidx.compose.ui.text.AnnotatedString
 import androidx.compose.ui.text.input.TextFieldValue
 import androidx.compose.ui.text.style.TextAlign
 import com.sadellie.unitto.core.base.Separator
@@ -57,21 +56,16 @@ internal fun InputTextField(
     }
 
     fun copyToClipboard() = clipboardManager.setText(
-        AnnotatedString(
-            Formatter.removeFormat(formattedInput.text)
-        )
+        formattedInput.annotatedString.subSequence(formattedInput.selection)
     )
 
     CompositionLocalProvider(
         LocalTextInputService provides null,
         LocalTextToolbar provides UnittoTextToolbar(
             view = LocalView.current,
+            copyCallback = ::copyToClipboard,
             pasteCallback = { pasteCallback(clipboardManager.getText()?.text ?: "") },
-            cutCallback = {
-                copyToClipboard()
-                cutCallback()
-            },
-            copyCallback = ::copyToClipboard
+            cutCallback = { copyToClipboard(); cutCallback() }
         )
     ) {
         BasicTextField(

feature/calculator/src/main/java/com/sadellie/unitto/feature/calculator/components/UnittoTextToolbar.kt

@@ -27,9 +27,9 @@ import androidx.compose.ui.platform.TextToolbarStatus
 
 internal class UnittoTextToolbar(
     private val view: View,
-    private val pasteCallback: () -> Unit,
-    private val cutCallback: () -> Unit,
-    private val copyCallback: () -> Unit
+    private val copyCallback: () -> Unit,
+    private val pasteCallback: (() -> Unit)? = null,
+    private val cutCallback: (() -> Unit)? = null
 ) : TextToolbar {
 
     private var actionMode: ActionMode? = null
@@ -45,8 +45,10 @@ internal class UnittoTextToolbar(
         onSelectAllRequested: (() -> Unit)?
     ) {
         textActionModeCallback.rect = rect
-        textActionModeCallback.onCopyRequested = copyCallback
-        textActionModeCallback.onCutRequested = cutCallback
+        textActionModeCallback.onCopyRequested = { onCopyRequested?.invoke(); copyCallback.invoke() }
+        textActionModeCallback.onCutRequested = cutCallback?.let {
+            { it.invoke(); onCutRequested?.invoke() }
+        }
         textActionModeCallback.onPasteRequested = pasteCallback
         textActionModeCallback.onSelectAllRequested = onSelectAllRequested
         if (actionMode == null) {