// TestCheckboxSwitch1 Example
// Source code file: MainActivity.kt
// Display the states of the checkbox and switch in the
// Text element when the button is clicked.

package it372.ssmith.testcheckboxswitch1
import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.activity.enableEdgeToEdge
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.material3.Button
import androidx.compose.material3.Checkbox
import androidx.compose.material3.Switch
import androidx.compose.material3.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp

class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        enableEdgeToEdge()
        setContent {
            MainLayout( )
        }
    }
}


@Composable
fun MainLayout( ) {

    // State variables for composables
    var checkboxState = remember { mutableStateOf(false) }
    var switchState = remember { mutableStateOf(false) }
    var textDisplay = remember { mutableStateOf("") }

    Column(Modifier.padding(all = 50.dp),
        horizontalAlignment = Alignment.CenterHorizontally) {

        Checkbox(checked = checkboxState.value,
            onCheckedChange = { checkboxState.value = it },
            modifier = Modifier
                .padding(all = 30.dp)
                .size(width = 50.dp, height = 50.dp)
        )

        Switch(checked = switchState.value,
               onCheckedChange = { switchState.value = it },
               modifier = Modifier
                   .padding(all = 30.dp)
                   .size(width = 50.dp, height = 50.dp)
        )

        Button(onClick = {
            var value1 = checkboxState.value
            var value2 = switchState.value
                textDisplay.value = "Checkbox: $value1; Switch: $value2"
            })  {
            Text(text = "Show Checkbox and Switch States")
        }

        Text(text = textDisplay.value , Modifier
            .padding(all = 30.dp)
            .size(width=200.dp, height=100.dp),
            fontSize = 25.sp)
    }
}

@Preview(showBackground = true)
@Composable
fun GreetingPreview() {
    MainLayout( )
}