Unified Bookmarks and Recent Tabs signin methods.

chrome/android/java/src/org/chromium/chrome/browser/signin/SigninAndSyncView.java

Index: chrome/android/java/src/org/chromium/chrome/browser/signin/SigninAndSyncView.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/signin/SigninAndSyncView.java b/chrome/android/java/src/org/chromium/chrome/browser/signin/SigninAndSyncView.java
new file mode 100644
index 0000000000000000000000000000000000000000..5579001c1a3b5bdd09932b936014021b10088659
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/signin/SigninAndSyncView.java
@@ -0,0 +1,265 @@
+// 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.signin;
+
+import android.content.Context;
+import android.content.Intent;
+import android.provider.Settings;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.Button;
+import android.widget.FrameLayout;
+import android.widget.TextView;
+
+import org.chromium.chrome.R;
+import org.chromium.chrome.browser.preferences.PreferencesLauncher;
+import org.chromium.chrome.browser.signin.AccountSigninActivity.AccessPoint;
+import org.chromium.chrome.browser.signin.SigninManager.SignInStateObserver;
+import org.chromium.chrome.browser.sync.ui.SyncCustomizationFragment;
+import org.chromium.sync.AndroidSyncSettings;
+import org.chromium.sync.AndroidSyncSettings.AndroidSyncSettingsObserver;
+import org.chromium.sync.signin.ChromeSigninController;
+
+/**
+ * A View that shows the user the next step they must complete to start syncing their data (eg.
+ * Recent Tabs or Bookmarks). For example, if the user is not signed in, the View will prompt them
+ * to do so and link to the AccountSigninActivity.
+ */
+public class SigninAndSyncView extends FrameLayout
+        implements AndroidSyncSettingsObserver, SignInStateObserver {
+    private static final String TAG = "SigninAndSyncView";
+    private final Listener mListener;
+    private final int mAccessPoint;
+    @AccessPoint private final SigninManager mSigninManager;
+
+    private final TextView mTitle;
+    private final TextView mDescription;
+    private final Button mNegativeButton;
+    private final Button mPositiveButton;
+
+    /**
+     * A listener for the container of the SigninAndSyncView to be informed of certain user
+     * interactions.
+     */
+    public interface Listener {
+        /**
+         * The user has pressed 'no thanks' and expects the view to be removed from its parent.
+         */
+        public void onViewDismissed();
+    }
+
+    /**
+     * Constructor for use from Java.
+     */
+    public SigninAndSyncView(Context context, Listener listener, @AccessPoint int accessPoint) {
+        // TODO(peconn): Simplify BookmarkPromoHeader
+        super(context);
+        mListener = listener;
+        mAccessPoint = accessPoint;
+
+        assert mAccessPoint == SigninAccessPoint.BOOKMARK_MANAGER
+                || mAccessPoint == SigninAccessPoint.RECENT_TABS
+                : "SigninAndSyncView only has strings for bookmark manager and recent tabs.";
+
+        mSigninManager = SigninManager.get(getContext());
+
+        addView(LayoutInflater.from(getContext())
+                .inflate(R.layout.signin_and_sync_view, this, false));
+
+        mTitle = (TextView) findViewById(R.id.title);
+        mDescription = (TextView) findViewById(R.id.description);
+        mNegativeButton = (Button) findViewById(R.id.no_thanks);
+        mPositiveButton = (Button) findViewById(R.id.sign_in);
+
+        // The title stays the same no matter what action the user must take.
+        if (mAccessPoint == SigninAccessPoint.BOOKMARK_MANAGER) {
+            mTitle.setText(R.string.sync_your_bookmarks);
+        } else {
+            mTitle.setVisibility(View.GONE);
+        }
+
+        // We don't need to call update() here as it will be called in onAttachedToWindow().
+    }
+
+    private void update() {
+        ViewState viewState;
+        if (!ChromeSigninController.get(getContext()).isSignedIn()) {
+            viewState = getStateForSignin();
+        } else if (!AndroidSyncSettings.isMasterSyncEnabled(getContext())) {
+            viewState = getStateForEnableAndroidSync();
+        } else if (!AndroidSyncSettings.isChromeSyncEnabled(getContext())) {
+            viewState = getStateForEnableChromeSync();
+        } else {
+            viewState = getStateForStartUsing();
+        }
+        viewState.apply(mDescription, mPositiveButton, mNegativeButton);
+    }
+
+    /**
+     * The ViewState class represents all the UI elements that can change for each variation of
+     * this View. We use this to ensure each variation (created in the getStateFor* methods)
+     * explicitly touches each UI element.
+     */
+    private static class ViewState {
+        private final int mDescriptionText;
+        private final ButtonState mPositiveButtonState;
+        private final ButtonState mNegativeButtonState;
+
+        public ViewState(int mDescriptionText,
+                ButtonState mPositiveButtonState, ButtonState mNegativeButtonState) {
+            this.mDescriptionText = mDescriptionText;
+            this.mPositiveButtonState = mPositiveButtonState;
+            this.mNegativeButtonState = mNegativeButtonState;
+        }
+
+        public void apply(TextView description, Button positiveButton, Button negativeButton) {
+            description.setText(mDescriptionText);
+            mNegativeButtonState.apply(negativeButton);
+            mPositiveButtonState.apply(positiveButton);
+        }
+    }
+
+    /**
+     * Classes to represent the state of a button that we are interested in, used to keep ViewState
+     * tidy and provide some convenience methods.
+     */
+    private interface ButtonState {
+        public void apply(Button button);
+    }
+
+    private static class ButtonAbsent implements ButtonState {
+        @Override
+        public void apply(Button button) {
+            button.setVisibility(View.GONE);
+        }
+    }
+
+    private static class ButtonPresent implements ButtonState {
+        private final int mTextResource;
+        private final OnClickListener mOnClickListener;
+
+        public ButtonPresent(int textResource, OnClickListener onClickListener) {
+            mTextResource = textResource;
+            mOnClickListener = onClickListener;
+        }
+
+        @Override
+        public void apply(Button button) {
+            button.setVisibility(View.VISIBLE);
+            button.setText(mTextResource);
+            button.setOnClickListener(mOnClickListener);
+        }
+    }
+
+    private ViewState getStateForSignin() {
+        int descId = mAccessPoint == SigninAccessPoint.BOOKMARK_MANAGER
+                ? R.string.bookmark_sign_in_promo_description
+                : R.string.recent_tabs_sign_in_promo_description;
+
+        ButtonState positiveButton = new ButtonPresent(
+                R.string.sign_in_button,
+                new OnClickListener() {
+                    @Override
+                    public void onClick(View view) {
+                        AccountSigninActivity
+                                .startAccountSigninActivity(getContext(), mAccessPoint);
+                    }
+                });
+
+        ButtonState negativeButton;
+        if (mAccessPoint == SigninAccessPoint.RECENT_TABS) {
+            negativeButton = new ButtonAbsent();
+        } else {
+            negativeButton = new ButtonPresent(R.string.no_thanks, new OnClickListener() {
+                @Override
+                public void onClick(View view) {
+                    mListener.onViewDismissed();
+                }
+            });
+        }
+
+        return new ViewState(descId, positiveButton, negativeButton);
+    }
+
+    private ViewState getStateForEnableAndroidSync() {
+        assert mAccessPoint == SigninAccessPoint.RECENT_TABS
+                : "Enable Android Sync should not be showing from bookmarks";
+
+        int descId = R.string.recent_tabs_sync_promo_enable_android_sync;
+
+        ButtonState positiveButton = new ButtonPresent(
+                R.string.open_settings_button,
+                new OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        // TODO(crbug.com/557784): Like AccountManagementFragment, this would also
+                        // benefit from going directly to an account.
+                        Intent intent = new Intent(Settings.ACTION_SYNC_SETTINGS);
+                        intent.putExtra(Settings.EXTRA_ACCOUNT_TYPES, new String[] {"com.google"});
+                        getContext().startActivity(intent);
+                    }
+                });
+
+        return new ViewState(descId, positiveButton, new ButtonAbsent());
+    }
+
+    private ViewState getStateForEnableChromeSync() {
+        int descId = mAccessPoint == SigninAccessPoint.BOOKMARK_MANAGER
+                ? R.string.bookmarks_sync_promo_enable_sync
+                : R.string.recent_tabs_sync_promo_enable_chrome_sync;
+
+        ButtonState positiveButton = new ButtonPresent(
+                R.string.enable_sync_button,
+                new OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        PreferencesLauncher.launchSettingsPage(getContext(),
+                                SyncCustomizationFragment.class.getName());
+                    }
+                });
+
+        return new ViewState(descId, positiveButton, new ButtonAbsent());
+    }
+
+    private ViewState getStateForStartUsing() {
+        assert mAccessPoint == SigninAccessPoint.RECENT_TABS
+                : "This should not be showing from bookmarks";
+
+        return new ViewState(R.string.ntp_recent_tabs_sync_promo_instructions,
+                new ButtonAbsent(), new ButtonAbsent());
+    }
+
+    @Override
+    protected void onAttachedToWindow() {
+        super.onAttachedToWindow();
+        mSigninManager.addSignInStateObserver(this);
+        AndroidSyncSettings.registerObserver(getContext(), this);
+        update();
+    }
+
+    @Override
+    protected void onDetachedFromWindow() {
+        super.onDetachedFromWindow();
+        mSigninManager.removeSignInStateObserver(this);
+        AndroidSyncSettings.unregisterObserver(getContext(), this);
+    }
+
+    // SigninStateObserver
+    @Override
+    public void onSignedIn() {
+        update();
+    }
+
+    @Override
+    public void onSignedOut() {
+        update();
+    }
+
+    // AndroidSyncStateObserver
+    @Override
+    public void androidSyncSettingsChanged() {
+        update();
+    }
+}