package com.affectiva.affdexme;

import android.app.ActionBar;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.preference.PreferenceActivity;
import android.preference.PreferenceFragment;
import android.support.v4.content.ContextCompat;
import android.view.MenuItem;

import java.util.List;

//Activity which works with standard Android Preferences framework to display the preference headers.
public class SettingsActivity extends PreferenceActivity {

    @Override
    public void onCreate(Bundle savedBundleInstance) {
        super.onCreate(savedBundleInstance);
        ActionBar actionBar = getActionBar();
        if (actionBar != null) {
            actionBar.setIcon(new ColorDrawable(ContextCompat.getColor(getApplicationContext(), R.color.transparent_overlay)));
        }
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            // Respond to the action bar's Up/Home button
            case android.R.id.home:
                this.onBackPressed();
                return true;
        }
        return super.onOptionsItemSelected(item);
    }

    //Populate the activity with the top-level headers.
    @Override
    public void onBuildHeaders(List<Header> target) {
        loadHeadersFromResource(R.xml.preference_headers, target);
    }

    //Boilerplate method, required by Android API
    @Override
    protected boolean isValidFragment(String fragmentName) {
        return SettingsFragment.class.getName().equals(fragmentName) || MetricSelectionFragment.class.getName().equals(fragmentName);
    }

    //This fragment shows the preferences for the first header.
    public static class SettingsFragment extends PreferenceFragment {
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);

            // Load the preferences from an XML resource
            addPreferencesFromResource(R.xml.settings_preferences);
        }
    }
}