🔍 Introduce default search engine dialog

chrome/android/java/src/org/chromium/chrome/browser/locale/LocaleManager.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.Intent;
 import android.content.SharedPreferences;
 import android.support.annotation.IntDef;
+import android.support.annotation.Nullable;
 
 import org.chromium.base.ContextUtils;
 import org.chromium.base.ThreadUtils;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.AppHooks;
 import org.chromium.chrome.browser.ChromeFeatureList;
 import org.chromium.chrome.browser.preferences.PreferencesLauncher;
 import org.chromium.chrome.browser.preferences.SearchEnginePreference;
 import org.chromium.chrome.browser.snackbar.Snackbar;
 import org.chromium.chrome.browser.snackbar.SnackbarManager;
@@ skipping 148 matching lines @@
             // As long as the user is in the special locale, special engines should be in the list.
             addSpecialSearchEngines();
         }
         preferences.edit().putBoolean(PREF_WAS_IN_SPECIAL_LOCALE, isInSpecialLocale).apply();
     }
 
     /**
      * Shows a promotion dialog about search engines depending on Locale and other conditions.
      * See {@link LocaleManager#getSearchEnginePromoShowType()} for possible types and logic.
      *
+     * @param context    Context showing the dialog.
+     * @param onSelected Run when the dialog has been closed.
      * @return Whether such dialog is needed.
      */
-    public boolean showSearchEnginePromoIfNeeded(Context context) {
+    public boolean showSearchEnginePromoIfNeeded(Context context, @Nullable Runnable onSelected) {
         int shouldShow = getSearchEnginePromoShowType();
-
-        if (shouldShow == SEARCH_ENGINE_PROMO_SHOW_SOGOU) {
-            new SogouPromoDialog(context, this).show();
-            return true;
+        switch (shouldShow) {
+            case SEARCH_ENGINE_PROMO_DONT_SHOW:
+                return false;
+            case SEARCH_ENGINE_PROMO_SHOW_SOGOU:
+                new SogouPromoDialog(context, this, onSelected).show();
+                return true;
+            case SEARCH_ENGINE_PROMO_SHOW_EXISTING:
+            case SEARCH_ENGINE_PROMO_SHOW_NEW:
+                DefaultSearchEnginePromoDialog.create(context, shouldShow, onSelected);
+                return true;
+            default:
+                assert false;
+                return false;
         }
-        return false;
     }
 
     /**
      * @return Whether auto switch for search engine is enabled.
      */
     public boolean isSearchEngineAutoSwitchEnabled() {
         return ContextUtils.getAppSharedPreferences().getBoolean(PREF_AUTO_SWITCH, false);
     }
 
     /**
@@ skipping 43 matching lines @@
             return SEARCH_ENGINE_PROMO_DONT_SHOW;
         }
         return SEARCH_ENGINE_PROMO_SHOW_SOGOU;
     }
 
     private SpecialLocaleHandler getSpecialLocaleHandler() {
         if (mLocaleHandler == null) mLocaleHandler = new SpecialLocaleHandler(getSpecialLocaleId());
         return mLocaleHandler;
     }
 }