package io.highfidelity.hifiinterface; import android.app.Activity;import android.app.Fragment;import android.app.FragmentManager;import android.app.FragmentTransaction;import android.content.Intent;import android.graphics.Bitmap;import android.graphics.drawable.BitmapDrawable;import android.os.Bundle;import android.support.annotation.NonNull;import android.support.design.widget.NavigationView;import android.support.v4.content.ContextCompat;import android.support.v4.graphics.drawable.RoundedBitmapDrawable;import android.support.v4.graphics.drawable.RoundedBitmapDrawableFactory;import android.support.v4.view.GravityCompat;import android.support.v4.widget.DrawerLayout;import android.support.v7.app.ActionBar;import android.support.v7.app.AppCompatActivity;import android.support.v7.widget.Toolbar;import android.util.Log;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.Window;import android.view.WindowManager;import android.widget.ImageView;import android.widget.TextView; import com.squareup.picasso.Callback;import com.squareup.picasso.Picasso; import io.highfidelity.hifiinterface.fragment.FriendsFragment;import io.highfidelity.hifiinterface.fragment.HomeFragment;import io.highfidelity.hifiinterface.fragment.PolicyFragment;import io.highfidelity.hifiinterface.fragment.ProfileFragment;import io.highfidelity.hifiinterface.fragment.SettingsFragment;import io.highfidelity.hifiinterface.fragment.SignupFragment;import io.highfidelity.hifiinterface.task.DownloadProfileImageTask; public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener,                                                                HomeFragment.OnHomeInteractionListener,                                                                FriendsFragment.OnHomeInteractionListener,                                                                ProfileFragment.OnProfileInteractionListener {     private static final int PROFILE_PICTURE_PLACEHOLDER = R.drawable.default_profile_avatar;    public static final String DEFAULT_FRAGMENT = "Home";    public static final String EXTRA_FRAGMENT = "fragment";    public static final String EXTRA_BACK_TO_SCENE = "backToScene";    public static final String EXTRA_BACK_TO_URL = "url";     private String TAG = "HighFidelity";     public native void logout();    public native void setUsernameChangedListener(Activity usernameChangedListener);    public native String getUsername();     private DrawerLayout mDrawerLayout;    private NavigationView mNavigationView;    private ImageView mProfilePicture;    private TextView mDisplayName;    private View mLoginPanel;    private View mProfilePanel;    private TextView mLogoutOption;    private MenuItem mPeopleMenuItem;    private MenuItem mProfileMenuItem;     private boolean backToScene;    private String backToUrl;     @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);         mNavigationView = findViewById(R.id.nav_view);        mNavigationView.setNavigationItemSelectedListener(this);         mLoginPanel = mNavigationView.getHeaderView(0).findViewById(R.id.loginPanel);        mProfilePanel = mNavigationView.getHeaderView(0).findViewById(R.id.profilePanel);         mLogoutOption = mNavigationView.findViewById(R.id.logout);         mDisplayName = mNavigationView.getHeaderView(0).findViewById(R.id.displayName);        mProfilePicture = mNavigationView.getHeaderView(0).findViewById(R.id.profilePicture);         mPeopleMenuItem = mNavigationView.getMenu().findItem(R.id.action_people);         mProfileMenuItem = mNavigationView.getMenu().findItem(R.id.action_profile);         updateDebugMenu(mNavigationView.getMenu());         Toolbar toolbar = findViewById(R.id.toolbar);        toolbar.setTitleTextAppearance(this, R.style.HomeActionBarTitleStyle);        setSupportActionBar(toolbar);         ActionBar actionbar = getSupportActionBar();        actionbar.setDisplayHomeAsUpEnabled(true);        actionbar.setHomeAsUpIndicator(R.drawable.ic_menu);         mDrawerLayout = findViewById(R.id.drawer_layout);         Window window = getWindow();        window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);        window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);        window.setStatusBarColor(ContextCompat.getColor(this, R.color.statusbar_color));         if (getIntent() != null) {            if (getIntent().hasExtra(EXTRA_FRAGMENT)) {                loadFragment(getIntent().getStringExtra(EXTRA_FRAGMENT));            } else {                loadFragment(DEFAULT_FRAGMENT);            }             backToScene = getIntent().getBooleanExtra(EXTRA_BACK_TO_SCENE, false);            backToUrl = getIntent().getStringExtra(EXTRA_BACK_TO_URL);        }    }     private void updateDebugMenu(Menu menu) {        if (BuildConfig.DEBUG) {            for (int i=0; i < menu.size(); i++) {                if (menu.getItem(i).getItemId() == R.id.action_debug_settings) {                    menu.getItem(i).setVisible(true);                }            }        }    }     private void loadFragment(String fragment) {        switch (fragment) {            case "Home":                loadHomeFragment(true);                break;            case "Privacy Policy":                loadPrivacyPolicyFragment();                break;            case "People":                loadPeopleFragment();                break;            default:                Log.e(TAG, "Unknown fragment " + fragment);        }     }     private void loadHomeFragment(boolean addToBackStack) {        Fragment fragment = HomeFragment.newInstance();        loadFragment(fragment, getString(R.string.home), getString(R.string.tagFragmentHome), addToBackStack, true);    }     private void startLoginMenuActivity() {        Intent intent = new Intent(this, LoginMenuActivity.class);        intent.putExtra(LoginMenuActivity.EXTRA_BACK_ON_SKIP, true);        startActivity(intent);    }     private void loadPrivacyPolicyFragment() {        Fragment fragment = PolicyFragment.newInstance();         loadFragment(fragment, getString(R.string.privacyPolicy), getString(R.string.tagFragmentPolicy), true, true);    }     private void loadPeopleFragment() {        Fragment fragment = FriendsFragment.newInstance();         loadFragment(fragment, getString(R.string.people), getString(R.string.tagFragmentPeople), true, true);    }     private void loadProfileFragment() {        Fragment fragment = ProfileFragment.newInstance();         loadFragment(fragment, getString(R.string.profile), getString(R.string.tagFragmentProfile), true, true);    }     private void loadSettingsFragment() {        SettingsFragment fragment = SettingsFragment.newInstance();         loadFragment(fragment, getString(R.string.settings), getString(R.string.tagSettings), true, true);    }      private void loadFragment(Fragment newFragment, String title, String tag, boolean addToBackStack, boolean goBackUntilHome) {        FragmentManager fragmentManager = getFragmentManager();         // check if it's the same fragment        String currentFragmentName = fragmentManager.getBackStackEntryCount() > 0                ? fragmentManager.getBackStackEntryAt(fragmentManager.getBackStackEntryCount() - 1).getName()                : "";        if (currentFragmentName.equals(title)) {            mDrawerLayout.closeDrawer(mNavigationView);            return; // cancel as we are already in that fragment        }         if (goBackUntilHome) {            // go back until first transaction            int backStackEntryCount = fragmentManager.getBackStackEntryCount();            for (int i = 0; i < backStackEntryCount - 1; i++) {                fragmentManager.popBackStackImmediate();            }        }         // this case is when we wanted to go home.. rollback already did that!        // But asking for a new Home fragment makes it easier to have an updated list so we let it to continue         FragmentTransaction ft = fragmentManager.beginTransaction();        ft.replace(R.id.content_frame, newFragment, tag);         if (addToBackStack) {            ft.addToBackStack(title);        }        ft.commit();        setTitle(title);        mDrawerLayout.closeDrawer(mNavigationView);    }         private void updateLoginMenu() {        if (HifiUtils.getInstance().isUserLoggedIn()) {            mLoginPanel.setVisibility(View.GONE);            mProfilePanel.setVisibility(View.VISIBLE);            mLogoutOption.setVisibility(View.VISIBLE);            mPeopleMenuItem.setVisible(true);            updateProfileHeader();        } else {            mLoginPanel.setVisibility(View.VISIBLE);            mProfilePanel.setVisibility(View.GONE);            mLogoutOption.setVisibility(View.GONE);            mPeopleMenuItem.setVisible(false);            mDisplayName.setText("");        }    }     private void updateProfileHeader() {        updateProfileHeader(getUsername());    }    private void updateProfileHeader(String username) {        if (!username.isEmpty()) {            mDisplayName.setText(username);            updateProfilePicture(username);        }    }     @Override    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        //getMenuInflater().inflate(R.menu.menu_navigation, menu);        return true;    }     @Override    public boolean onOptionsItemSelected(MenuItem item) {        // Handle action bar item clicks here. The action bar will        // automatically handle clicks on the Home/Up button, so long        // as you specify a parent activity in AndroidManifest.xml.        int id = item.getItemId();        switch (id) {            case android.R.id.home:                mDrawerLayout.openDrawer(GravityCompat.START);                return true;        }         return super.onOptionsItemSelected(item);    }     @Override    public boolean onNavigationItemSelected(@NonNull MenuItem item) {        switch(item.getItemId()) {            case R.id.action_home:                loadHomeFragment(false);                return true;            case R.id.action_people:                loadPeopleFragment();                return true;            case R.id.action_profile:                loadProfileFragment();                break;            case R.id.action_debug_settings:                loadSettingsFragment();                return true;        }        return false;    }     @Override    protected void onStart() {        super.onStart();        setUsernameChangedListener(this);        updateLoginMenu();    }     @Override    protected void onStop() {        super.onStop();        setUsernameChangedListener(null);    }     public void onLoginClicked(View view) {        startLoginMenuActivity();    }     public void onLogoutClicked(View view) {        logout();        updateLoginMenu();        exitLoggedInFragment();     }     private void exitLoggedInFragment() {        // If we are in a "logged in" fragment (like People), go back to home. This could be expanded to multiple fragments        FragmentManager fragmentManager = getFragmentManager();        String currentFragmentName = fragmentManager.getBackStackEntryCount() > 0                ? fragmentManager.getBackStackEntryAt(fragmentManager.getBackStackEntryCount() - 1).getName()                : "";        if (currentFragmentName.equals(getString(R.string.people))) {            loadHomeFragment(false);        }    }     public void onSelectedDomain(String domainUrl) {        goToDomain(domainUrl);    }     private void goToLastLocation() {        goToDomain(backToUrl != null? backToUrl : "");    }     private void goToDomain(String domainUrl) {        Intent intent = new Intent(this, InterfaceActivity.class);        intent.putExtra(InterfaceActivity.DOMAIN_URL, domainUrl);        finish();        intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);        startActivity(intent);    }     private void goToUser(String username) {        Intent intent = new Intent(this, InterfaceActivity.class);        intent.putExtra(InterfaceActivity.EXTRA_GOTO_USERNAME, username);        finish();        intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);        startActivity(intent);    }     public void handleUsernameChanged(String username) {        runOnUiThread(() -> updateProfileHeader(username));    }     /**     * This is a temporary way to get the profile picture URL     * TODO: this should be get from an API (at the moment there is no one for this)     */    private void updateProfilePicture(String username) {        mProfilePicture.setImageResource(PROFILE_PICTURE_PLACEHOLDER);        new DownloadProfileImageTask(url ->  { if (url != null && !url.isEmpty()) {                Picasso.get().load(url).into(mProfilePicture, new RoundProfilePictureCallback());            } } ).execute(username);    }     public void onPrivacyPolicyClicked(View view) {        loadPrivacyPolicyFragment();    }     @Override    public void onVisitUserSelected(String username) {        goToUser(username);    }     @Override    public void onCancelProfileEdit() {        loadHomeFragment(false);    }     @Override    public void onCompleteProfileEdit() {        loadHomeFragment(false);    }     @Override    public void onAvatarChosen() {        loadHomeFragment(false);    }     private class RoundProfilePictureCallback implements Callback {        @Override        public void onSuccess() {            Bitmap imageBitmap = ((BitmapDrawable) mProfilePicture.getDrawable()).getBitmap();            RoundedBitmapDrawable imageDrawable = RoundedBitmapDrawableFactory.create(getResources(), imageBitmap);            imageDrawable.setCircular(true);            imageDrawable.setCornerRadius(Math.max(imageBitmap.getWidth(), imageBitmap.getHeight()) / 2.0f);            mProfilePicture.setImageDrawable(imageDrawable);        }         @Override        public void onError(Exception e) {            mProfilePicture.setImageResource(PROFILE_PICTURE_PLACEHOLDER);        }    }     @Override    public void onBackPressed() {        // if a fragment needs to internally manage back presses..        FragmentManager fm = getFragmentManager();        Fragment friendsFragment = fm.findFragmentByTag(getString(R.string.tagFragmentPeople));        if (friendsFragment != null && friendsFragment instanceof FriendsFragment) {            if (((FriendsFragment) friendsFragment).onBackPressed()) {                return;            }        }         int index = fm.getBackStackEntryCount() - 1;         if (index > 0) {            super.onBackPressed();            index--;            if (index > -1) {                setTitle(fm.getBackStackEntryAt(index).getName());            }            if (backToScene) {                backToScene = false;                goToLastLocation();            }        } else {            finishAffinity();        }    }     @Override    public void onSaveInstanceState(Bundle savedInstanceState) {        super.onSaveInstanceState(savedInstanceState);        savedInstanceState.putBoolean(EXTRA_BACK_TO_SCENE, backToScene);    }     @Override    protected void onRestoreInstanceState(Bundle savedInstanceState) {        super.onRestoreInstanceState(savedInstanceState);        backToScene = savedInstanceState.getBoolean(EXTRA_BACK_TO_SCENE, false);    }}