added error input field for name and discription

app/src/main/java/be/ugent/sel/studeez/screens/timer_form/form_screens/AbstractTimerFormScreen.kt

@@ -13,8 +13,10 @@ import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.text.input.KeyboardType
 import be.ugent.sel.studeez.R
 import be.ugent.sel.studeez.common.composable.BasicButton
+import be.ugent.sel.studeez.common.composable.LabeledErrorTextField
 import be.ugent.sel.studeez.common.composable.LabelledInputField
 import be.ugent.sel.studeez.common.ext.basicButton
 import be.ugent.sel.studeez.data.local.models.timer_info.TimerInfo
@@ -28,8 +30,14 @@ abstract class AbstractTimerFormScreen(private val timerInfo: TimerInfo) {
         extraButton: @Composable () -> Unit
     ) {
 
+
         var name by remember { mutableStateOf(timerInfo.name) }
+        val isNameValid = remember { mutableStateOf(false) }
+        val hasEditedName = remember { mutableStateOf(true) }
+
         var description by remember { mutableStateOf(timerInfo.description) }
+        val isDescriptionValid = remember { mutableStateOf(false) }
+        val hasEditedDescription = remember { mutableStateOf(true) }
 
         // This shall rerun whenever name and description change
         timerInfo.name = name
@@ -47,18 +55,30 @@ abstract class AbstractTimerFormScreen(private val timerInfo: TimerInfo) {
             ) {
 
                 // Fields that every timer shares (ommited id)
-                LabelledInputField(
+                LabeledErrorTextField(
-                    value = name,
+                    initialValue = timerInfo.name,
-                    onNewValue = { name = it },
                     label = R.string.name,
-                )
+                    errorText = AppText.name_error,
+                    isValid = isNameValid,
+                    isFirst = hasEditedName,
+                    keyboardType = KeyboardType.Text,
+                    predicate = { it.isNotBlank() }
+                ) { correctName ->
+                    name = correctName
+                }
 
-                LabelledInputField(
+                LabeledErrorTextField(
-                    value = description,
+                    initialValue = timerInfo.description,
-                    onNewValue = { description = it },
+                    label = R.string.description,
-                    label = AppText.description,
+                    errorText = AppText.description_error,
-                    singleLine = false
+                    isValid = isDescriptionValid,
-                )
+                    isFirst = hasEditedDescription,
+                    singleLine= false,
+                    keyboardType = KeyboardType.Text,
+                    predicate = { it.isNotBlank() }
+                ) { correctName ->
+                    description = correctName
+                }
 
                 ExtraFields()
 
@@ -66,7 +86,12 @@ abstract class AbstractTimerFormScreen(private val timerInfo: TimerInfo) {
 
             Column {
                 BasicButton(R.string.save, Modifier.basicButton()) {
-                    onSaveClick(timerInfo)
+                    if (isNameValid.value && isDescriptionValid.value) {
+                        onSaveClick(timerInfo)
+                    } else {
+                        hasEditedName.value = false
+                        hasEditedDescription.value = false
+                    }
                 }
                 extraButton()
             }