[Autofill Assistant] Instantiates AA only if it's turned on.

Initial screen is shown without the initialization of UIDelegate,
that allows postoponing the init of native side.

Bug: 806868
Change-Id: I047ec5bf12d454ce7a51b31ad68c758baf10869b
Reviewed-on: https://chromium-review.googlesource.com/c/1352163
Commit-Queue: Lukasz Suder <lsuder@chromium.org>
Reviewed-by: Ganggui Tang <gogerald@chromium.org>
Reviewed-by: Stephane Zermatten <szermatt@chromium.org>
Cr-Commit-Position: refs/heads/master@{#612135}

chrome/android/java/src/org/chromium/chrome/browser/autofill_assistant/AutofillAssistantFacade.java

@@ -5,6 +5,7 @@
 package org.chromium.chrome.browser.autofill_assistant;
 
 import android.os.Bundle;
+import android.support.annotation.Nullable;
 
 import org.chromium.chrome.browser.ChromeActivity;
 import org.chromium.chrome.browser.tab.EmptyTabObserver;
@@ -27,24 +28,43 @@ public class AutofillAssistantFacade {
     private static final String PARAMETER_ENABLED = "ENABLED";
 
     /** Returns true if all conditions are satisfied to start Autofill Assistant. */
-    public static boolean isConfigured(Bundle intentExtras) {
+    public static boolean isConfigured(@Nullable Bundle intentExtras) {
         return getBooleanParameter(intentExtras, PARAMETER_ENABLED)
                 && !AutofillAssistantStudy.getUrl().isEmpty()
-                && AutofillAssistantPreferencesUtil.isAutofillAssistantSwitchOn();
+                && AutofillAssistantPreferencesUtil.canShowAutofillAssistant();
     }
 
     /** Starts Autofill Assistant on the given {@code activity}. */
     public static void start(ChromeActivity activity) {
         Map<String, String> parameters = extractParameters(activity.getInitialIntent().getExtras());
         parameters.remove(PARAMETER_ENABLED);
+        if (!AutofillAssistantPreferencesUtil.getSkipInitScreenPreference()) {
+            FirstRunScreen.show(activity, (result) -> {
+                if (result) initiateAutofillAssistant(activity, parameters);
+            });
+            return;
+        }
+
+        if (AutofillAssistantPreferencesUtil.isAutofillAssistantSwitchOn()
+                && AutofillAssistantPreferencesUtil.getSkipInitScreenPreference()) {
+            initiateAutofillAssistant(activity, parameters);
+        }
+        // We don't have consent to start Autofill Assistant and cannot show initial screen.
+        // Do nothing.
+    }
 
+    /**
+     * Instantiates all essential Autofill Assistant components and starts it.
+     */
+    private static void initiateAutofillAssistant(
+            ChromeActivity activity, Map<String, String> parameters) {
         AutofillAssistantUiController controller =
                 new AutofillAssistantUiController(activity, parameters);
         UiDelegateHolder delegateHolder = new UiDelegateHolder(
                 controller, new AutofillAssistantUiDelegate(activity, controller));
         initTabObservers(activity, delegateHolder);
 
-        controller.start(delegateHolder, Details.makeFromParameters(parameters));
+        controller.init(delegateHolder, Details.makeFromParameters(parameters));
     }
 
     private static void initTabObservers(ChromeActivity activity, UiDelegateHolder delegateHolder) {
@@ -74,16 +94,19 @@ public class AutofillAssistantFacade {
     }
 
     /** Return the value if the given boolean parameter from the extras. */
-    private static boolean getBooleanParameter(Bundle extras, String parameterName) {
-        return extras.getBoolean(INTENT_EXTRA_PREFIX + parameterName, false);
+    private static boolean getBooleanParameter(@Nullable Bundle extras, String parameterName) {
+        return extras != null && extras.getBoolean(INTENT_EXTRA_PREFIX + parameterName, false);
     }
 
     /** Returns a map containing the extras starting with {@link #INTENT_EXTRA_PREFIX}. */
-    private static Map<String, String> extractParameters(Bundle extras) {
+    private static Map<String, String> extractParameters(@Nullable Bundle extras) {
         Map<String, String> result = new HashMap<>();
+        if (extras != null) {
             for (String key : extras.keySet()) {
                 if (key.startsWith(INTENT_EXTRA_PREFIX)) {
-                result.put(key.substring(INTENT_EXTRA_PREFIX.length()), extras.get(key).toString());
+                    result.put(key.substring(INTENT_EXTRA_PREFIX.length()),
+                            extras.get(key).toString());
+                }
             }
         }
         return result;

chrome/android/java/src/org/chromium/chrome/browser/autofill_assistant/AutofillAssistantPreferencesUtil.java

@@ -8,7 +8,7 @@ import org.chromium.base.ContextUtils;
 import org.chromium.chrome.browser.preferences.autofill_assistant.AutofillAssistantPreferences;
 
 /** Autofill Assistant related preferences util class. */
-public class AutofillAssistantPreferencesUtil {
+class AutofillAssistantPreferencesUtil {
     // Avoid instatiation by accident.
     private AutofillAssistantPreferencesUtil() {}
 
@@ -19,24 +19,33 @@ public class AutofillAssistantPreferencesUtil {
             "AUTOFILL_ASSISTANT_SKIP_INIT_SCREEN";
 
     /** Checks whether the Autofill Assistant switch preference in settings is on. */
-    public static boolean isAutofillAssistantSwitchOn() {
+    static boolean isAutofillAssistantSwitchOn() {
         return ContextUtils.getAppSharedPreferences().getBoolean(
                 AutofillAssistantPreferences.PREF_AUTOFILL_ASSISTANT_SWITCH, true);
     }
 
     /** Gets whether skip initial screen preference. */
-    public static boolean getSkipInitScreenPreference() {
+    static boolean getSkipInitScreenPreference() {
         return ContextUtils.getAppSharedPreferences().getBoolean(
                 AUTOFILL_ASSISTANT_SKIP_INIT_SCREEN, false);
     }
 
+    /**
+     * Returns true if the switch for AutofillAssistant is turned on or the init screen can
+     * be shown. The later is important if the switched is turned off, but we can ask again
+     * to enable AutofillAssistant.
+     */
+    static boolean canShowAutofillAssistant() {
+        return isAutofillAssistantSwitchOn() || !getSkipInitScreenPreference();
+    }
+
     /**
      * Sets preferences from the initial screen.
      *
      * @param accept Flag indicates whether this service is accepted.
      * @param dontShowAgain Flag indicates whether initial screen should be shown again next time.
      */
-    public static void setInitialPreferences(boolean accept, boolean dontShowAgain) {
+    static void setInitialPreferences(boolean accept, boolean dontShowAgain) {
         ContextUtils.getAppSharedPreferences()
                 .edit()
                 .putBoolean(AutofillAssistantPreferences.PREF_AUTOFILL_ASSISTANT_SWITCH, accept)

chrome/android/java/src/org/chromium/chrome/browser/autofill_assistant/AutofillAssistantUiController.java

@@ -89,17 +89,9 @@ public class AutofillAssistantUiController implements AutofillAssistantUiDelegat
                 parameters.get(PARAMETER_USER_EMAIL), activity.getInitialIntent().getExtras());
     }
 
-    void start(UiDelegateHolder uiDelegateHolder, Details details) {
-        mUiDelegateHolder = uiDelegateHolder;
-        // Do not show details until 'onInitOk'.
-        mCurrentDetails = details;
-        mUiDelegateHolder.startOrSkipInitScreen();
-    }
-
-    @Override
-    public void onInitOk() {
-        assert mUiDelegateHolder != null;
-        mUiDelegateHolder.performUiOperation(uiDelegate -> uiDelegate.showDetails(mCurrentDetails));
+    public void init(UiDelegateHolder delegateHolder, Details details) {
+        mUiDelegateHolder = delegateHolder;
+        maybeUpdateDetails(details);
         nativeStart(mUiControllerAndroid, mInitialUrl);
     }
 
@@ -108,11 +100,6 @@ public class AutofillAssistantUiController implements AutofillAssistantUiDelegat
         mUiDelegateHolder.dismiss(R.string.autofill_assistant_stopped);
     }
 
-    @Override
-    public void onInitRejected() {
-        mUiDelegateHolder.shutdown();
-    }
-
     @Override
     public Details getDetails() {
         return mCurrentDetails;

chrome/android/java/src/org/chromium/chrome/browser/autofill_assistant/AutofillAssistantUiDelegate.java

@@ -30,7 +30,6 @@ import android.view.Gravity;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.CheckBox;
 import android.widget.HorizontalScrollView;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
@@ -120,12 +119,6 @@ class AutofillAssistantUiDelegate {
          */
         void onDismiss();
 
-        /**
-         * Called when the user chose not to use the assistant from the
-         * onboarding screen.
-         */
-        void onInitRejected();
-
         /**
          * Called when a script has been selected.
          *
@@ -174,11 +167,6 @@ class AutofillAssistantUiDelegate {
          * @return A string describing the current execution context.
          */
         String getDebugContext();
-
-        /**
-         * Called when the init was successful.
-         */
-        void onInitOk();
     }
 
     /** Describes a chip to display. */
@@ -762,47 +750,6 @@ class AutofillAssistantUiDelegate {
         setCarouselChildViews(childViews, /* alignRight= */ false);
     }
 
-    /**
-     * Starts the init screen unless it has been marked to be skipped.
-     */
-    public void startOrSkipInitScreen() {
-        if (AutofillAssistantPreferencesUtil.getSkipInitScreenPreference()) {
-            mClient.onInitOk();
-            return;
-        }
-        showInitScreen();
-    }
-
-    /**
-     * Shows the init screen and launch the autofill assistant when it succeeds.
-     */
-    public void showInitScreen() {
-        View initView = LayoutInflater.from(mActivity)
-                                .inflate(R.layout.init_screen, mCoordinatorView)
-                                .findViewById(R.id.init_screen);
-        // Set focusable for accessibility.
-        initView.findViewById(R.id.init).setFocusable(true);
-
-        // Set default state to checked.
-        ((CheckBox) initView.findViewById(R.id.checkbox_dont_show_init_again)).setChecked(true);
-        initView.findViewById(R.id.button_init_ok)
-                .setOnClickListener(unusedView -> onInitClicked(true, initView));
-        initView.findViewById(R.id.button_init_not_ok)
-                .setOnClickListener(unusedView -> onInitClicked(false, initView));
-        initView.announceForAccessibility(
-                mActivity.getString(R.string.autofill_assistant_first_run_accessibility));
-    }
-
-    private void onInitClicked(boolean accept, View initView) {
-        CheckBox checkBox = initView.findViewById(R.id.checkbox_dont_show_init_again);
-        AutofillAssistantPreferencesUtil.setInitialPreferences(accept, checkBox.isChecked());
-        mCoordinatorView.removeView(initView);
-        if (accept)
-            mClient.onInitOk();
-        else
-            mClient.onInitRejected();
-    }
-
     /**
      * Show the payment request UI.
      *

chrome/android/java/src/org/chromium/chrome/browser/autofill_assistant/FirstRunScreen.java

+// Copyright 2018 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.autofill_assistant;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.CheckBox;
+
+import org.chromium.base.Callback;
+import org.chromium.chrome.autofill_assistant.R;
+import org.chromium.chrome.browser.ChromeActivity;
+
+/** Class for managing the first run screen. */
+class FirstRunScreen {
+    /**
+     * Shows the first run screen and calls callback with the result.
+     */
+    static void show(ChromeActivity activity, Callback<Boolean> callback) {
+        ViewGroup coordinatorView = (ViewGroup) activity.findViewById(
+                org.chromium.chrome.autofill_assistant.R.id.coordinator);
+        View initView = LayoutInflater.from(activity)
+                                .inflate(R.layout.init_screen, coordinatorView)
+                                .findViewById(R.id.init_screen);
+        // Set focusable for accessibility.
+        initView.findViewById(R.id.init).setFocusable(true);
+
+        initView.findViewById(R.id.button_init_ok)
+                .setOnClickListener(unusedView -> onClicked(true, initView, activity, callback));
+        initView.findViewById(R.id.button_init_not_ok)
+                .setOnClickListener(unusedView -> onClicked(false, initView, activity, callback));
+        initView.announceForAccessibility(
+                activity.getString(R.string.autofill_assistant_first_run_accessibility));
+    }
+
+    private static void onClicked(
+            boolean accept, View initView, ChromeActivity activity, Callback<Boolean> callback) {
+        ViewGroup coordinatorView = (ViewGroup) activity.findViewById(
+                org.chromium.chrome.autofill_assistant.R.id.coordinator);
+        CheckBox checkBox = initView.findViewById(
+                org.chromium.chrome.autofill_assistant.R.id.checkbox_dont_show_init_again);
+        AutofillAssistantPreferencesUtil.setInitialPreferences(accept, checkBox.isChecked());
+        coordinatorView.removeView(initView);
+
+        callback.onResult(accept);
+    }
+}

chrome/android/java/src/org/chromium/chrome/browser/autofill_assistant/UiDelegateHolder.java

@@ -35,13 +35,6 @@ class UiDelegateHolder {
         mUiDelegate = uiDelegate;
     }
 
-    /**
-     * Starts the init screen unless it has been marked to be skipped.
-     */
-    public void startOrSkipInitScreen() {
-        mUiDelegate.startOrSkipInitScreen();
-    }
-
     /**
      * Perform a UI operation:
      *  - directly if we are not in a pause state.

chrome/android/java_sources.gni

@@ -134,6 +134,7 @@ chrome_java_sources = [
   "java/src/org/chromium/chrome/browser/autofill_assistant/AutofillAssistantUiDelegate.java",
   "java/src/org/chromium/chrome/browser/autofill_assistant/Details.java",
   "java/src/org/chromium/chrome/browser/autofill_assistant/FeedbackContext.java",
+  "java/src/org/chromium/chrome/browser/autofill_assistant/FirstRunScreen.java",
   "java/src/org/chromium/chrome/browser/autofill_assistant/UiDelegateHolder.java",
   "java/src/org/chromium/chrome/browser/autofill_assistant/ui/BottomBarAnimations.java",
   "java/src/org/chromium/chrome/browser/autofill_assistant/ui/PaymentRequestBottomBar.java",