// TriColor Example
// Source code file: MainActivity.java

package it372.ssmith.tricolor;
import android.os.Bundle;
import android.view.View;
import android.widget.LinearLayout;
import androidx.activity.EdgeToEdge;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.content.ContextCompat;
import androidx.core.graphics.Insets;
import androidx.core.view.ViewCompat;
import androidx.core.view.WindowInsetsCompat;

public class MainActivity extends AppCompatActivity {
    // Set initial color to blue. Color codes:
    //    blue=0, red=1, lime=2.
    private int color = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        EdgeToEdge.enable(this);
        setContentView(R.layout.activity_main);
        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
            return insets;
        });
    }

    public void changeColor(View view) {
        int colorCode;
        LinearLayout layout = findViewById(R.id.main);
        color = (color + 1) % 3;
        switch(color) {
            case 0:  colorCode = R.color.blue;
                     break;
            case 1:  colorCode = R.color.red;
                     break;
            default: colorCode = R.color.lime;
                     break;
        }
        layout.setBackgroundColor(ContextCompat.getColor(this, colorCode));
    }
}