Move Java Blimp shell code to app subpackage

blimp/client/app/android/java/src/org/chromium/blimp/settings/AboutBlimpPreferences.java

-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package org.chromium.blimp.settings;
-
-import android.app.Activity;
-import android.app.AlertDialog;
-import android.content.Context;
-import android.content.DialogInterface;
-import android.content.Intent;
-import android.content.pm.ApplicationInfo;
-import android.content.pm.PackageInfo;
-import android.content.pm.PackageManager;
-import android.os.Build;
-import android.os.Bundle;
-import android.preference.ListPreference;
-import android.preference.Preference;
-import android.preference.PreferenceFragment;
-import android.text.TextUtils;
-
-import org.chromium.base.Log;
-import org.chromium.blimp.BrowserRestartActivity;
-import org.chromium.blimp.R;
-import org.chromium.blimp.preferences.PreferencesUtil;
-
-/**
- * Fragment to display blimp client and engine version related info.
- */
-public class AboutBlimpPreferences extends PreferenceFragment {
-    private static final String TAG = "AboutBlimp";
-    public static final String EXTRA_ENGINE_IP = "engine_ip";
-    public static final String EXTRA_ENGINE_VERSION = "engine_version";
-
-    private static final String PREF_APPLICATION_VERSION = "application_version";
-    private static final String PREF_OS_VERSION = "os_version";
-    private static final String PREF_ENGINE_IP = "blimp_engine_ip";
-    private static final String PREF_ENGINE_VERSION = "blimp_engine_version";
-    private static final String PREF_ASSIGNER_URL = "blimp_assigner_url";
-
-    @Override
-    public void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        getActivity().setTitle(R.string.about_blimp_preferences);
-        addPreferencesFromResource(R.xml.about_blimp_preferences);
-
-        setAppVersion(getActivity());
-        setOSVersion();
-        setEngineIPandVersion(getActivity().getIntent());
-        setupAssignerPreferences();
-    }
-
-    private void setAppVersion(Activity activity) {
-        PackageManager pm = activity.getPackageManager();
-        try {
-            ApplicationInfo applicationInfo = pm.getApplicationInfo(activity.getPackageName(), 0);
-            PackageInfo packageInfo = pm.getPackageInfo(activity.getPackageName(), 0);
-
-            String versionString;
-            if (!TextUtils.isEmpty(packageInfo.versionName)
-                    && Character.isDigit(packageInfo.versionName.charAt(0))) {
-                versionString = activity.getString(
-                        R.string.subtitle_for_version_number, packageInfo.versionName);
-            } else {
-                versionString = packageInfo.versionName;
-            }
-
-            Preference p = findPreference(PREF_APPLICATION_VERSION);
-            p.setSummary(versionString);
-        } catch (PackageManager.NameNotFoundException e) {
-            Log.d(TAG, "Fetching ApplicationInfo failed.", e);
-        }
-    }
-
-    private void setOSVersion() {
-        Preference p = findPreference(PREF_OS_VERSION);
-        p.setSummary("Android " + Build.VERSION.RELEASE);
-    }
-
-    private void setEngineIPandVersion(Intent intent) {
-        String engineIP = intent.getStringExtra(EXTRA_ENGINE_IP);
-        Preference p = findPreference(PREF_ENGINE_IP);
-        p.setSummary(engineIP == null ? "" : engineIP);
-
-        String engineVersion = intent.getStringExtra(EXTRA_ENGINE_VERSION);
-        p = findPreference(PREF_ENGINE_VERSION);
-        p.setSummary(engineVersion == null ? "" : engineVersion);
-    }
-
-    /**
-     * When the user taps on the current assigner, a list of available assigners pops up.
-     * User is allowed to change the assigner which is saved to shared preferences.
-     * A dialog is displayed which prompts the user to restart the application.
-     */
-    private void setupAssignerPreferences() {
-        final Activity activity = getActivity();
-        String assigner = PreferencesUtil.getLastUsedAssigner(activity);
-
-        final ListPreference lp = (ListPreference) findPreference(PREF_ASSIGNER_URL);
-        lp.setSummary(assigner == null ? "" : assigner);
-
-        lp.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
-            @Override
-            public boolean onPreferenceChange(Preference preference, Object newValue) {
-                String newAssignmentUrl = (String) newValue;
-                lp.setSummary(newAssignmentUrl);
-                lp.setValue(newAssignmentUrl);
-
-                PreferencesUtil.setLastUsedAssigner(activity, newAssignmentUrl);
-                showRestartDialog(activity);
-
-                return true;
-            }
-        });
-    }
-
-    private void showRestartDialog(final Context context) {
-        // TODO(shaktisahu): Change this to use android.support.v7.app.AlertDialog later.
-        new AlertDialog.Builder(context)
-                .setTitle(R.string.restart_blimp)
-                .setMessage(R.string.blimp_assigner_changed_please_restart)
-                .setPositiveButton(R.string.restart_now,
-                        new DialogInterface.OnClickListener() {
-                            @Override
-                            public void onClick(DialogInterface dialog, int which) {
-                                restartBrowser(context);
-                            }
-                        })
-                .create()
-                .show();
-    }
-
-    private void restartBrowser(Context context) {
-        Intent intent = BrowserRestartActivity.createRestartIntent(context);
-        context.startActivity(intent);
-    }
-}