eu.faircode.adblocker.ActivityMain.java Source code

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Here is the source code for eu.faircode.adblocker.ActivityMain.java

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package eu.faircode.adblocker;

/*
This file is part of NetGuard.
    
NetGuard is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
NetGuard is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with NetGuard.  If not, see <http://www.gnu.org/licenses/>.
    
Copyright 2015-2016 by Marcel Bokhorst (M66B)
*/

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.net.VpnService;
import android.os.AsyncTask;
import android.os.Build;
import android.os.PowerManager;
import android.preference.PreferenceManager;
import android.provider.Settings;
import android.support.annotation.NonNull;
import android.support.v4.content.LocalBroadcastManager;
import android.support.v4.graphics.drawable.DrawableCompat;
import android.support.v4.view.MenuItemCompat;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.app.AlertDialog;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.SearchView;
import android.support.v7.widget.SwitchCompat;
import android.text.method.LinkMovementMethod;
import android.util.Log;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import java.util.List;

public class ActivityMain extends AppCompatActivity implements SharedPreferences.OnSharedPreferenceChangeListener {
    private static final String TAG = "NetGuard.Main";

    private boolean running = false;
    private ImageView ivIcon;
    private ImageView ivQueue;
    private SwitchCompat swEnabled;
    private ImageView ivMetered;

    private AdapterRule adapter = null;
    private MenuItem menuSearch = null;
    private AlertDialog dialogFirst = null;
    private AlertDialog dialogVpn = null;
    private AlertDialog dialogDoze = null;
    private AlertDialog dialogLegend = null;
    private AlertDialog dialogAbout = null;

    private IAB iab = null;

    private static final int REQUEST_VPN = 1;
    private static final int REQUEST_INVITE = 2;
    private static final int REQUEST_LOGCAT = 3;
    public static final int REQUEST_ROAMING = 4;

    private static final int MIN_SDK = Build.VERSION_CODES.ICE_CREAM_SANDWICH;

    public static final String ACTION_RULES_CHANGED = "eu.faircode.adblocker.ACTION_RULES_CHANGED";
    public static final String ACTION_QUEUE_CHANGED = "eu.faircode.adblocker.ACTION_QUEUE_CHANGED";
    public static final String EXTRA_REFRESH = "Refresh";
    public static final String EXTRA_SEARCH = "Search";
    public static final String EXTRA_APPROVE = "Approve";
    public static final String EXTRA_LOGCAT = "Logcat";
    public static final String EXTRA_CONNECTED = "Connected";
    public static final String EXTRA_METERED = "Metered";
    public static final String EXTRA_SIZE = "Size";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        Log.i(TAG, "Create version=" + Util.getSelfVersionName(this) + "/" + Util.getSelfVersionCode(this));
        Util.logExtras(getIntent());

        if (Build.VERSION.SDK_INT < MIN_SDK) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.android);
            return;
        }

        Util.setTheme(this);
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        swEnabled = (SwitchCompat) findViewById(R.id.swEnabled);
        running = true;

        final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
        boolean enabled = prefs.getBoolean("enabled", false);
        boolean initialized = prefs.getBoolean("initialized", false);

        // Upgrade
        Receiver.upgrade(initialized, this);

        if (!getIntent().hasExtra(EXTRA_APPROVE)) {
            if (enabled)
                ServiceSinkhole.start("UI", this);
            else
                ServiceSinkhole.stop("UI", this);
        }

        // Action bar
        final View actionView = getLayoutInflater().inflate(R.layout.actionmain, null, false);
        ivIcon = (ImageView) actionView.findViewById(R.id.ivIcon);
        ivQueue = (ImageView) actionView.findViewById(R.id.ivQueue);

        ivMetered = (ImageView) actionView.findViewById(R.id.ivMetered);

        // Icon
        ivIcon.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View view) {
                menu_about();
                return true;
            }
        });

        // Title
        getSupportActionBar().setTitle(null);

        // Netguard is busy
        ivQueue.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View view) {
                int location[] = new int[2];
                actionView.getLocationOnScreen(location);
                Toast toast = Toast.makeText(ActivityMain.this, R.string.msg_queue, Toast.LENGTH_LONG);
                toast.setGravity(Gravity.TOP | Gravity.START, location[0] + ivQueue.getLeft(),
                        Math.round(location[1] + ivQueue.getBottom() - toast.getView().getPaddingTop()));
                toast.show();
                return true;
            }
        });

        // On/off switch
        swEnabled.setChecked(enabled);
        swEnabled.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                Log.i(TAG, "Switch=" + isChecked);
                prefs.edit().putBoolean("enabled", isChecked).apply();

                if (isChecked) {
                    try {
                        final Intent prepare = VpnService.prepare(ActivityMain.this);
                        if (prepare == null) {
                            Log.i(TAG, "Prepare done");
                            onActivityResult(REQUEST_VPN, RESULT_OK, null);
                        } else {
                            // Show dialog
                            LayoutInflater inflater = LayoutInflater.from(ActivityMain.this);
                            View view = inflater.inflate(R.layout.vpn, null, false);
                            dialogVpn = new AlertDialog.Builder(ActivityMain.this).setView(view)
                                    .setCancelable(false)
                                    .setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
                                        @Override
                                        public void onClick(DialogInterface dialog, int which) {
                                            if (running) {
                                                Log.i(TAG, "Start intent=" + prepare);
                                                try {
                                                    startActivityForResult(prepare, REQUEST_VPN);
                                                } catch (Throwable ex) {
                                                    Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
                                                    Util.sendCrashReport(ex, ActivityMain.this);
                                                    onActivityResult(REQUEST_VPN, RESULT_CANCELED, null);
                                                    prefs.edit().putBoolean("enabled", false).apply();
                                                }
                                            }
                                        }
                                    }).setOnDismissListener(new DialogInterface.OnDismissListener() {
                                        @Override
                                        public void onDismiss(DialogInterface dialogInterface) {
                                            dialogVpn = null;
                                        }
                                    }).create();
                            dialogVpn.show();
                        }
                    } catch (Throwable ex) {
                        // Prepare failed
                        Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
                        Util.sendCrashReport(ex, ActivityMain.this);
                        prefs.edit().putBoolean("enabled", false).apply();
                    }

                } else
                    ServiceSinkhole.stop("switch off", ActivityMain.this);
            }
        });
        if (enabled)
            checkDoze();

        // Network is metered
        ivMetered.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View view) {
                int location[] = new int[2];
                actionView.getLocationOnScreen(location);
                Toast toast = Toast.makeText(ActivityMain.this, R.string.msg_metered, Toast.LENGTH_LONG);
                toast.setGravity(Gravity.TOP | Gravity.START, location[0] + ivMetered.getLeft(),
                        Math.round(location[1] + ivMetered.getBottom() - toast.getView().getPaddingTop()));
                toast.show();
                return true;
            }
        });

        getSupportActionBar().setDisplayShowCustomEnabled(true);
        getSupportActionBar().setCustomView(actionView);

        // Disabled warning
        TextView tvDisabled = (TextView) findViewById(R.id.tvDisabled);
        tvDisabled.setVisibility(enabled ? View.GONE : View.VISIBLE);

        // Application list
        //        RecyclerView rvApplication = (RecyclerView) findViewById(R.id.rvApplication);
        //        rvApplication.setHasFixedSize(true);
        //        rvApplication.setLayoutManager(new LinearLayoutManager(this));
        //        adapter = new AdapterRule(this);
        //        rvApplication.setAdapter(adapter);

        // Swipe to refresh
        TypedValue tv = new TypedValue();
        getTheme().resolveAttribute(R.attr.colorPrimary, tv, true);
        //        swipeRefresh = (SwipeRefreshLayout) findViewById(R.id.swipeRefresh);
        //        swipeRefresh.setColorSchemeColors(Color.WHITE, Color.WHITE, Color.WHITE);
        //        swipeRefresh.setProgressBackgroundColorSchemeColor(tv.data);
        //        swipeRefresh.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
        //            @Override
        //            public void onRefresh() {
        //                Rule.clearCache(ActivityMain.this);
        //                ServiceSinkhole.reload("pull", ActivityMain.this);
        //                updateApplicationList(null);
        //            }
        //        });

        // Listen for preference changes
        prefs.registerOnSharedPreferenceChangeListener(this);

        // Listen for rule set changes
        IntentFilter ifr = new IntentFilter(ACTION_RULES_CHANGED);
        LocalBroadcastManager.getInstance(this).registerReceiver(onRulesChanged, ifr);

        // Listen for queue changes
        IntentFilter ifq = new IntentFilter(ACTION_QUEUE_CHANGED);
        LocalBroadcastManager.getInstance(this).registerReceiver(onQueueChanged, ifq);

        // Listen for added/removed applications
        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction(Intent.ACTION_PACKAGE_ADDED);
        intentFilter.addAction(Intent.ACTION_PACKAGE_REMOVED);
        intentFilter.addDataScheme("package");
        registerReceiver(packageChangedReceiver, intentFilter);

        // First use
        if (!initialized) {
            // Create view
            LayoutInflater inflater = LayoutInflater.from(this);
            View view = inflater.inflate(R.layout.first, null, false);
            TextView tvFirst = (TextView) view.findViewById(R.id.tvFirst);
            tvFirst.setMovementMethod(LinkMovementMethod.getInstance());

            // Show dialog
            dialogFirst = new AlertDialog.Builder(this).setView(view).setCancelable(false)
                    .setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            if (running)
                                prefs.edit().putBoolean("initialized", true).apply();
                        }
                    }).setNegativeButton(android.R.string.no, new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            if (running)
                                finish();
                        }
                    }).setOnDismissListener(new DialogInterface.OnDismissListener() {
                        @Override
                        public void onDismiss(DialogInterface dialogInterface) {
                            dialogFirst = null;
                        }
                    }).create();
            dialogFirst.show();
        }

        // Fill application list
        updateApplicationList(getIntent().getStringExtra(EXTRA_SEARCH));

        // Update IAB SKUs
        try {
            iab = new IAB(new IAB.Delegate() {
                @Override
                public void onReady(IAB iab) {
                    try {
                        iab.updatePurchases();

                        if (!IAB.isPurchased(ActivityPro.SKU_LOG, ActivityMain.this))
                            prefs.edit().putBoolean("log", false).apply();
                        if (!IAB.isPurchased(ActivityPro.SKU_THEME, ActivityMain.this)) {
                            if (!"teal".equals(prefs.getString("theme", "teal")))
                                prefs.edit().putString("theme", "teal").apply();
                        }
                        if (!IAB.isPurchased(ActivityPro.SKU_SPEED, ActivityMain.this))
                            prefs.edit().putBoolean("show_stats", false).apply();
                    } catch (Throwable ex) {
                        Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
                    } finally {
                        iab.unbind();
                    }
                }
            }, this);
            iab.bind();
        } catch (Throwable ex) {
            Log.e(TAG, ex.toString() + "\n" + Log.getStackTraceString(ex));
        }

        checkExtras(getIntent());
    }

    @Override
    protected void onNewIntent(Intent intent) {
        Log.i(TAG, "New intent");
        Util.logExtras(intent);
        super.onNewIntent(intent);

        if (Build.VERSION.SDK_INT >= MIN_SDK) {
            if (intent.hasExtra(EXTRA_REFRESH))
                updateApplicationList(intent.getStringExtra(EXTRA_SEARCH));
            else
                updateSearch(intent.getStringExtra(EXTRA_SEARCH));
            checkExtras(intent);
        }
    }

    private void checkExtras(Intent intent) {
        // Approve request
        if (intent.hasExtra(EXTRA_APPROVE)) {
            Log.i(TAG, "Requesting VPN approval");
            swEnabled.toggle();
        }

        if (intent.hasExtra(EXTRA_LOGCAT)) {
            Log.i(TAG, "Requesting logcat");
            Intent logcat = getIntentLogcat();
            if (logcat.resolveActivity(getPackageManager()) != null)
                startActivityForResult(logcat, REQUEST_LOGCAT);
        }
    }

    @Override
    protected void onResume() {
        DatabaseHelper.getInstance(this).addAccessChangedListener(accessChangedListener);
        if (adapter != null)
            adapter.notifyDataSetChanged();
        super.onResume();
    }

    @Override
    protected void onPause() {
        super.onPause();
        DatabaseHelper.getInstance(this).removeAccessChangedListener(accessChangedListener);
    }

    @Override
    public void onDestroy() {
        Log.i(TAG, "Destroy");

        if (Build.VERSION.SDK_INT < MIN_SDK) {
            super.onDestroy();
            return;
        }

        running = false;

        PreferenceManager.getDefaultSharedPreferences(this).unregisterOnSharedPreferenceChangeListener(this);

        LocalBroadcastManager.getInstance(this).unregisterReceiver(onRulesChanged);
        LocalBroadcastManager.getInstance(this).unregisterReceiver(onQueueChanged);
        unregisterReceiver(packageChangedReceiver);

        if (dialogFirst != null) {
            dialogFirst.dismiss();
            dialogFirst = null;
        }
        if (dialogVpn != null) {
            dialogVpn.dismiss();
            dialogVpn = null;
        }
        if (dialogDoze != null) {
            dialogDoze.dismiss();
            dialogDoze = null;
        }
        if (dialogLegend != null) {
            dialogLegend.dismiss();
            dialogLegend = null;
        }
        if (dialogAbout != null) {
            dialogAbout.dismiss();
            dialogAbout = null;
        }

        if (iab != null) {
            iab.unbind();
            iab = null;
        }

        super.onDestroy();
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, final Intent data) {
        Log.i(TAG, "onActivityResult request=" + requestCode + " result=" + requestCode + " ok="
                + (resultCode == RESULT_OK));
        Util.logExtras(data);

        if (requestCode == REQUEST_VPN) {
            // Handle VPN approval
            SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
            prefs.edit().putBoolean("enabled", resultCode == RESULT_OK).apply();
            if (resultCode == RESULT_OK) {
                ServiceSinkhole.start("prepared", this);
                checkDoze();
            }

        } else if (requestCode == REQUEST_INVITE) {
            // Do nothing

        } else if (requestCode == REQUEST_LOGCAT) {
            // Send logcat by e-mail
            if (resultCode == RESULT_OK) {
                Uri target = data.getData();
                if (data.hasExtra("org.openintents.extra.DIR_PATH"))
                    target = Uri.parse(target + "/logcat.txt");
                Log.i(TAG, "Export URI=" + target);
                Util.sendLogcat(target, this);
            }

        } else {
            Log.w(TAG, "Unknown activity result request=" + requestCode);
            super.onActivityResult(requestCode, resultCode, data);
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
            @NonNull int[] grantResults) {
        if (requestCode == REQUEST_ROAMING)
            if (grantResults[0] == PackageManager.PERMISSION_GRANTED)
                ServiceSinkhole.reload("permission granted", this);
    }

    @Override
    public void onSharedPreferenceChanged(SharedPreferences prefs, String name) {
        Log.i(TAG, "Preference " + name + "=" + prefs.getAll().get(name));
        if ("enabled".equals(name)) {
            // Get enabled
            boolean enabled = prefs.getBoolean(name, false);

            // Display disabled warning
            TextView tvDisabled = (TextView) findViewById(R.id.tvDisabled);
            tvDisabled.setVisibility(enabled ? View.GONE : View.VISIBLE);

            // Check switch state
            SwitchCompat swEnabled = (SwitchCompat) getSupportActionBar().getCustomView()
                    .findViewById(R.id.swEnabled);
            if (swEnabled.isChecked() != enabled)
                swEnabled.setChecked(enabled);

        } else if ("whitelist_wifi".equals(name) || "screen_wifi".equals(name) || "whitelist_other".equals(name)
                || "screen_other".equals(name) || "whitelist_roaming".equals(name) || "show_user".equals(name)
                || "show_system".equals(name) || "show_nointernet".equals(name) || "show_disabled".equals(name)
                || "sort".equals(name) || "imported".equals(name))
            updateApplicationList(null);

        else if ("manage_system".equals(name)) {
            invalidateOptionsMenu();
            updateApplicationList(null);

        } else if ("theme".equals(name) || "dark_theme".equals(name))
            recreate();
    }

    private DatabaseHelper.AccessChangedListener accessChangedListener = new DatabaseHelper.AccessChangedListener() {
        @Override
        public void onChanged() {
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    if (adapter != null)
                        adapter.notifyDataSetChanged();
                }
            });
        }
    };

    private BroadcastReceiver onRulesChanged = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            Log.i(TAG, "Received " + intent);
            Util.logExtras(intent);

            if (adapter != null)
                if (intent.hasExtra(EXTRA_CONNECTED) && intent.hasExtra(EXTRA_METERED)) {
                    if (intent.getBooleanExtra(EXTRA_CONNECTED, false)) {
                        if (intent.getBooleanExtra(EXTRA_METERED, false))
                            adapter.setMobileActive();
                        else
                            adapter.setWifiActive();
                        ivMetered.setVisibility(
                                Util.isMeteredNetwork(ActivityMain.this) ? View.VISIBLE : View.INVISIBLE);
                    } else {
                        adapter.setDisconnected();
                        ivMetered.setVisibility(View.INVISIBLE);
                    }
                } else
                    updateApplicationList(null);
        }
    };

    private BroadcastReceiver onQueueChanged = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            Log.i(TAG, "Received " + intent);
            Util.logExtras(intent);
            int size = intent.getIntExtra(EXTRA_SIZE, -1);
            ivIcon.setVisibility(size == 0 ? View.VISIBLE : View.GONE);
            ivQueue.setVisibility(size == 0 ? View.GONE : View.VISIBLE);
        }
    };

    private BroadcastReceiver packageChangedReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            Log.i(TAG, "Received " + intent);
            Util.logExtras(intent);
            updateApplicationList(null);
        }
    };

    private void updateApplicationList(final String search) {
        Log.i(TAG, "Update search=" + search);

        new AsyncTask<Object, Object, List<Rule>>() {
            private boolean refreshing = true;

            @Override
            protected List<Rule> doInBackground(Object... arg) {
                return Rule.getRules(false, ActivityMain.this);
            }

            @Override
            protected void onPostExecute(List<Rule> result) {
                if (running) {
                    if (adapter != null) {
                        adapter.set(result);
                        updateSearch(search);
                    }

                }
            }
        }.execute();
    }

    private void updateSearch(String search) {
        if (menuSearch != null) {
            SearchView searchView = (SearchView) MenuItemCompat.getActionView(menuSearch);
            if (search == null) {
                if (menuSearch.isActionViewExpanded())
                    adapter.getFilter().filter(searchView.getQuery().toString());
            } else {
                MenuItemCompat.expandActionView(menuSearch);
                searchView.setQuery(search, true);
            }
        }
    }

    private void checkDoze() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            final Intent doze = new Intent(Settings.ACTION_IGNORE_BATTERY_OPTIMIZATION_SETTINGS);
            PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
            if (!pm.isIgnoringBatteryOptimizations(getPackageName())
                    && getPackageManager().resolveActivity(doze, 0) != null) {
                final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
                if (!prefs.getBoolean("nodoze", false)) {
                    LayoutInflater inflater = LayoutInflater.from(this);
                    View view = inflater.inflate(R.layout.doze, null, false);
                    final CheckBox cbDontAsk = (CheckBox) view.findViewById(R.id.cbDontAsk);
                    dialogDoze = new AlertDialog.Builder(this).setView(view).setCancelable(true)
                            .setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(DialogInterface dialog, int which) {
                                    prefs.edit().putBoolean("nodoze", cbDontAsk.isChecked()).apply();
                                    startActivity(doze);
                                }
                            }).setNegativeButton(android.R.string.no, new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(DialogInterface dialog, int which) {
                                    prefs.edit().putBoolean("nodoze", cbDontAsk.isChecked()).apply();
                                }
                            }).setOnDismissListener(new DialogInterface.OnDismissListener() {
                                @Override
                                public void onDismiss(DialogInterface dialogInterface) {
                                    dialogDoze = null;
                                }
                            }).create();
                    dialogDoze.show();
                }
            }
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        if (Build.VERSION.SDK_INT < MIN_SDK)
            return false;

        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.main, menu);

        // Search
        menuSearch = menu.findItem(R.id.menu_search);
        MenuItemCompat.setOnActionExpandListener(menuSearch, new MenuItemCompat.OnActionExpandListener() {
            @Override
            public boolean onMenuItemActionExpand(MenuItem item) {
                return true;
            }

            @Override
            public boolean onMenuItemActionCollapse(MenuItem item) {
                if (getIntent().hasExtra(EXTRA_SEARCH))
                    finish();
                return true;
            }
        });

        final SearchView searchView = (SearchView) MenuItemCompat.getActionView(menuSearch);
        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String query) {
                if (adapter != null)
                    adapter.getFilter().filter(query);
                searchView.clearFocus();
                return true;
            }

            @Override
            public boolean onQueryTextChange(String newText) {
                if (adapter != null)
                    adapter.getFilter().filter(newText);
                return true;
            }
        });
        searchView.setOnCloseListener(new SearchView.OnCloseListener() {
            @Override
            public boolean onClose() {
                if (adapter != null)
                    adapter.getFilter().filter(null);
                return true;
            }
        });

        if (!Util.hasValidFingerprint(this) || getIntentInvite(this).resolveActivity(getPackageManager()) == null)
            menu.removeItem(R.id.menu_invite);

        if (getIntentSupport().resolveActivity(getPackageManager()) == null)
            menu.removeItem(R.id.menu_support);

        return true;
    }

    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);

        if (prefs.getBoolean("manage_system", false)) {
            menu.findItem(R.id.menu_app_user).setChecked(prefs.getBoolean("show_user", true));
            menu.findItem(R.id.menu_app_system).setChecked(prefs.getBoolean("show_system", false));
        } else {
            Menu submenu = menu.findItem(R.id.menu_filter).getSubMenu();
            submenu.removeItem(R.id.menu_app_user);
            submenu.removeItem(R.id.menu_app_system);
        }

        menu.findItem(R.id.menu_app_nointernet).setChecked(prefs.getBoolean("show_nointernet", true));
        menu.findItem(R.id.menu_app_disabled).setChecked(prefs.getBoolean("show_disabled", true));

        String sort = prefs.getString("sort", "name");
        if ("data".equals(sort))
            menu.findItem(R.id.menu_sort_data).setChecked(true);
        else if ("uid".equals(sort))
            menu.findItem(R.id.menu_sort_uid).setChecked(true);
        else
            menu.findItem(R.id.menu_sort_name).setChecked(true);

        return super.onPrepareOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        Log.i(TAG, "Menu=" + item.getTitle());

        // Handle item selection
        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
        switch (item.getItemId()) {
        case R.id.menu_app_user:
            item.setChecked(!item.isChecked());
            prefs.edit().putBoolean("show_user", item.isChecked()).apply();
            return true;

        case R.id.menu_app_system:
            item.setChecked(!item.isChecked());
            prefs.edit().putBoolean("show_system", item.isChecked()).apply();
            return true;

        case R.id.menu_app_nointernet:
            item.setChecked(!item.isChecked());
            prefs.edit().putBoolean("show_nointernet", item.isChecked()).apply();
            return true;

        case R.id.menu_app_disabled:
            item.setChecked(!item.isChecked());
            prefs.edit().putBoolean("show_disabled", item.isChecked()).apply();
            return true;

        case R.id.menu_sort_name:
            item.setChecked(true);
            prefs.edit().putString("sort", "name").apply();
            return true;

        case R.id.menu_sort_uid:
            item.setChecked(true);
            prefs.edit().putString("sort", "uid").apply();
            return true;

        case R.id.menu_sort_data:
            item.setChecked(true);
            prefs.edit().putString("sort", "data").apply();
            return true;

        case R.id.menu_log:
            if (IAB.isPurchased(ActivityPro.SKU_LOG, this))
                startActivity(new Intent(this, ActivityLog.class));
            else
                startActivity(new Intent(this, ActivityPro.class));
            return true;

        case R.id.menu_settings:
            startActivity(new Intent(this, ActivitySettings.class));
            return true;

        case R.id.menu_pro:
            startActivity(new Intent(ActivityMain.this, ActivityPro.class));
            return true;

        case R.id.menu_invite:
            startActivityForResult(getIntentInvite(this), REQUEST_INVITE);
            return true;

        case R.id.menu_legend:
            menu_legend();
            return true;

        case R.id.menu_support:
            startActivity(getIntentSupport());
            return true;

        case R.id.menu_about:
            menu_about();
            return true;

        default:
            return super.onOptionsItemSelected(item);
        }
    }

    private void menu_legend() {
        TypedValue tv = new TypedValue();
        getTheme().resolveAttribute(R.attr.colorOn, tv, true);
        int colorOn = tv.data;
        getTheme().resolveAttribute(R.attr.colorOff, tv, true);
        int colorOff = tv.data;

        // Create view
        LayoutInflater inflater = LayoutInflater.from(this);
        View view = inflater.inflate(R.layout.legend, null, false);
        ImageView ivWifiOn = (ImageView) view.findViewById(R.id.ivWifiOn);
        ImageView ivWifiOff = (ImageView) view.findViewById(R.id.ivWifiOff);
        ImageView ivOtherOn = (ImageView) view.findViewById(R.id.ivOtherOn);
        ImageView ivOtherOff = (ImageView) view.findViewById(R.id.ivOtherOff);
        ImageView ivScreenOn = (ImageView) view.findViewById(R.id.ivScreenOn);
        ImageView ivHostAllowed = (ImageView) view.findViewById(R.id.ivHostAllowed);
        ImageView ivHostBlocked = (ImageView) view.findViewById(R.id.ivHostBlocked);
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
            Drawable wrapWifiOn = DrawableCompat.wrap(ivWifiOn.getDrawable());
            Drawable wrapWifiOff = DrawableCompat.wrap(ivWifiOff.getDrawable());
            Drawable wrapOtherOn = DrawableCompat.wrap(ivOtherOn.getDrawable());
            Drawable wrapOtherOff = DrawableCompat.wrap(ivOtherOff.getDrawable());
            Drawable wrapScreenOn = DrawableCompat.wrap(ivScreenOn.getDrawable());
            Drawable wrapHostAllowed = DrawableCompat.wrap(ivHostAllowed.getDrawable());
            Drawable wrapHostBlocked = DrawableCompat.wrap(ivHostBlocked.getDrawable());

            DrawableCompat.setTint(wrapWifiOn, colorOn);
            DrawableCompat.setTint(wrapWifiOff, colorOff);
            DrawableCompat.setTint(wrapOtherOn, colorOn);
            DrawableCompat.setTint(wrapOtherOff, colorOff);
            DrawableCompat.setTint(wrapScreenOn, colorOn);
            DrawableCompat.setTint(wrapHostAllowed, colorOn);
            DrawableCompat.setTint(wrapHostBlocked, colorOff);
        }

        // Show dialog
        dialogLegend = new AlertDialog.Builder(this).setView(view).setCancelable(true)
                .setOnDismissListener(new DialogInterface.OnDismissListener() {
                    @Override
                    public void onDismiss(DialogInterface dialogInterface) {
                        dialogLegend = null;
                    }
                }).create();
        dialogLegend.show();
    }

    private void menu_about() {
        // Create view
        LayoutInflater inflater = LayoutInflater.from(this);
        View view = inflater.inflate(R.layout.about, null, false);
        TextView tvVersionName = (TextView) view.findViewById(R.id.tvVersionName);
        TextView tvVersionCode = (TextView) view.findViewById(R.id.tvVersionCode);
        Button btnRate = (Button) view.findViewById(R.id.btnRate);
        TextView tvLicense = (TextView) view.findViewById(R.id.tvLicense);

        // Show version
        tvVersionName.setText(Util.getSelfVersionName(this));
        if (!Util.hasValidFingerprint(this))
            tvVersionName.setTextColor(Color.GRAY);
        tvVersionCode.setText(Integer.toString(Util.getSelfVersionCode(this)));

        // Handle license
        tvLicense.setMovementMethod(LinkMovementMethod.getInstance());

        // Handle logcat
        view.setOnClickListener(new View.OnClickListener() {
            private short tap = 0;
            private Toast toast = Toast.makeText(ActivityMain.this, "", Toast.LENGTH_SHORT);

            @Override
            public void onClick(View view) {
                tap++;
                if (tap == 7) {
                    tap = 0;
                    toast.cancel();

                    Intent intent = getIntentLogcat();
                    if (intent.resolveActivity(getPackageManager()) != null)
                        startActivityForResult(intent, REQUEST_LOGCAT);

                } else if (tap > 3) {
                    toast.setText(Integer.toString(7 - tap));
                    toast.show();
                }
            }
        });

        // Handle rate
        btnRate.setVisibility(
                getIntentRate(this).resolveActivity(getPackageManager()) == null ? View.GONE : View.VISIBLE);
        btnRate.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                startActivity(getIntentRate(ActivityMain.this));
            }
        });

        // Show dialog
        dialogAbout = new AlertDialog.Builder(this).setView(view).setCancelable(true)
                .setOnDismissListener(new DialogInterface.OnDismissListener() {
                    @Override
                    public void onDismiss(DialogInterface dialogInterface) {
                        dialogAbout = null;
                    }
                }).create();
        dialogAbout.show();
    }

    private static Intent getIntentInvite(Context context) {
        Intent intent = new Intent("com.google.android.gms.appinvite.ACTION_APP_INVITE");
        intent.setPackage("com.google.android.gms");
        intent.putExtra("com.google.android.gms.appinvite.TITLE", context.getString(R.string.menu_invite));
        intent.putExtra("com.google.android.gms.appinvite.MESSAGE", context.getString(R.string.msg_try));
        intent.putExtra("com.google.android.gms.appinvite.BUTTON_TEXT", context.getString(R.string.msg_try));
        // com.google.android.gms.appinvite.DEEP_LINK_URL
        return intent;
    }

    private static Intent getIntentRate(Context context) {
        Intent intent = new Intent(Intent.ACTION_VIEW,
                Uri.parse("market://details?id=" + context.getPackageName()));
        if (intent.resolveActivity(context.getPackageManager()) == null)
            intent = new Intent(Intent.ACTION_VIEW,
                    Uri.parse("https://play.google.com/store/apps/details?id=" + context.getPackageName()));
        return intent;
    }

    private static Intent getIntentSupport() {
        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.setData(Uri.parse("https://github.com/M66B/NetGuard/blob/master/FAQ.md"));
        return intent;
    }

    private Intent getIntentLogcat() {
        Intent intent;
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
            if (Util.isPackageInstalled("org.openintents.filemanager", this)) {
                intent = new Intent("org.openintents.action.PICK_DIRECTORY");
            } else {
                intent = new Intent(Intent.ACTION_VIEW);
                intent.setData(
                        Uri.parse("https://play.google.com/store/apps/details?id=org.openintents.filemanager"));
            }
        } else {
            intent = new Intent(Intent.ACTION_CREATE_DOCUMENT);
            intent.addCategory(Intent.CATEGORY_OPENABLE);
            intent.setType("text/plain");
            intent.putExtra(Intent.EXTRA_TITLE, "logcat.txt");
        }
        return intent;
    }
}