🔍 Introduce default search engine dialog

chrome/android/java/src/org/chromium/chrome/browser/locale/SogouPromoDialog.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.chrome.browser.locale;
 
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.os.Bundle;
 import android.support.annotation.IntDef;
+import android.support.annotation.Nullable;
 import android.text.SpannableString;
 import android.text.method.LinkMovementMethod;
 import android.text.style.ClickableSpan;
 import android.text.style.StyleSpan;
 import android.view.View;
 import android.widget.TextView;
 
 import org.chromium.base.ContextUtils;
 import org.chromium.base.metrics.RecordHistogram;
 import org.chromium.chrome.R;
@@ skipping 16 matching lines @@
     @Retention(RetentionPolicy.SOURCE)
     @IntDef({CHOICE_USE_SOGOU, CHOICE_KEEP_GOOGLE, CHOICE_SETTINGS, CHOICE_BACK_KEY})
     private @interface UserChoice {}
     private static final int CHOICE_USE_SOGOU = 0;
     private static final int CHOICE_KEEP_GOOGLE = 1;
     private static final int CHOICE_SETTINGS = 2;
     private static final int CHOICE_BACK_KEY = 3;
 
     private static final int CHOICE_ENUM_COUNT = 4;
 
+    /** Run when the dialog is dismissed. */
+    private final Runnable mOnDismissedRunnable;
+
     private final LocaleManager mLocaleManager;
     private final ClickableSpan mSpan = new NoUnderlineClickableSpan() {
         @Override
         public void onClick(View widget) {
             mChoice = CHOICE_SETTINGS;
             Intent intent = PreferencesLauncher.createIntentForSettingsPage(
                     getContext(), SearchEnginePreference.class.getName());
             getContext().startActivity(intent);
             dismiss();
         }
     };
 
     @UserChoice
     private int mChoice = CHOICE_BACK_KEY;
 
     /**
      * Creates an instance of the dialog.
      */
-    public SogouPromoDialog(Context context, LocaleManager localeManager) {
+    public SogouPromoDialog(
+            Context context, LocaleManager localeManager, @Nullable Runnable onDismissed) {
         super(context);
         mLocaleManager = localeManager;
         setOnDismissListener(this);
         setCanceledOnTouchOutside(false);
+        mOnDismissedRunnable = onDismissed;
     }
 
     @Override
     protected DialogParams getDialogParams() {
         PromoDialog.DialogParams params = new PromoDialog.DialogParams();
         params.drawableResource = R.drawable.search_sogou;
         params.headerStringResource = R.string.search_with_sogou;
         params.subheaderStringResource = R.string.sogou_explanation;
         params.primaryButtonStringResource = R.string.ok;
         params.secondaryButtonStringResource = R.string.keep_google;
@@ skipping 55 matching lines @@
                 break;
             default:
                 assert false : "Unexpected choice";
         }
         ContextUtils.getAppSharedPreferences()
                 .edit()
                 .putBoolean(LocaleManager.PREF_PROMO_SHOWN, true)
                 .apply();
         RecordHistogram.recordEnumeratedHistogram(
                 "SpecialLocale.PromotionDialog", mChoice, CHOICE_ENUM_COUNT);
+
+        if (mOnDismissedRunnable != null) mOnDismissedRunnable.run();
     }
 }