Show search engine promo dialog for special locale

chrome/android/java/src/org/chromium/chrome/browser/locale/SearchEnginePromoDialog.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.app.Dialog;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+import android.text.SpannableString;
+import android.text.method.LinkMovementMethod;
+import android.text.style.ClickableSpan;
+import android.view.View;
+import android.widget.TextView;
+
+import org.chromium.chrome.R;
+import org.chromium.chrome.browser.preferences.PreferencesLauncher;
+import org.chromium.chrome.browser.preferences.SearchEnginePreference;
+import org.chromium.ui.text.NoUnderlineClickableSpan;
+import org.chromium.ui.text.SpanApplier;
+import org.chromium.ui.text.SpanApplier.SpanInfo;
+
+/**
+ * A promotion dialog showing that the default search provider will be set to Sogou.
+ */
+public class SearchEnginePromoDialog extends Dialog implements View.OnClickListener {
+
+    private LocaleManager mLocaleManager;
+    private ClickableSpan mSpan = new NoUnderlineClickableSpan() {

[Maria, 2016/10/01 00:00:46]

final

[Ian Wen, 2016/10/03 17:05:37]

Done.

+        @Override
+        public void onClick(View widget) {
+            Intent intent = PreferencesLauncher.createIntentForSettingsPage(getContext(),
+                    SearchEnginePreference.class.getName());
+            getContext().startActivity(intent);
+        }
+    };
+
+    /**
+     * Creates an instance of the dialog.
+     */
+    public SearchEnginePromoDialog(Context context, LocaleManager localeManager) {
+        super(context, R.style.SimpleDialog);
+        mLocaleManager = localeManager;
+    }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        // Specificaly disable auto reconstruction of the dialog.
+        if (savedInstanceState != null) {
+            dismiss();

[Maria, 2016/10/01 00:00:46]

so the dialog won't work in landscape mode?

[Ian Wen, 2016/10/03 17:05:37]

It will work if orientation changes because ChromeActivity handles config
changes and is not recreated after orientation change.

It will not be reconstructed though if the activity is killed in background,
because I specifically disable it here. This is just to be careful since this
dialog requires native library to be loaded.

[Maria, 2016/10/04 03:42:22]

Can you mention this in the comment above?

+            return;
+        }
+        setContentView(R.layout.search_engine_promo);
+
+        View keepGoogleButton = findViewById(R.id.keep_google_button);
+        View okButton = findViewById(R.id.ok_button);
+        keepGoogleButton.setOnClickListener(this);
+        okButton.setOnClickListener(this);
+
+        TextView textView = (TextView) findViewById(R.id.description);
+        SpannableString description = SpanApplier.applySpans(
+                getContext().getString(R.string.sogou_explanation),
+                new SpanInfo("<link>", "</link>", mSpan));
+        textView.setText(description);
+        textView.setMovementMethod(LinkMovementMethod.getInstance());
+    }
+
+    @Override
+    public void onClick(View view) {
+        if (view.getId() == R.id.keep_google_button) {
+            keepGoogle();
+        } else if (view.getId() == R.id.ok_button) {
+            useSogou();
+        }
+        dismiss();
+    }
+
+    private void keepGoogle() {
+        mLocaleManager.addSpecialSearchEngines();
+        // TODO(ianwen): Disable search engine auto switching here.
+    }
+
+    private void useSogou() {
+        mLocaleManager.addSpecialSearchEngines();
+        mLocaleManager.overrideDefaultSearchEngine();
+    }
+}