[Sharing Hub] Add educational panel for STTS

If STTS is not available (sync not enabled or no target devices
available) display a prompt to educated users to sign in.

Bug: 1009124
Change-Id: I357763f51fafcfded316fb8ecfb954470ea527e6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2067798
Commit-Queue: Kyle Milka <kmilka@chromium.org>
Reviewed-by: Matthew Jones <mdjones@chromium.org>
Reviewed-by: Jeffrey Cohen <jeffreycohen@chromium.org>
Reviewed-by: Tanya Gupta <tgupta@chromium.org>
Cr-Commit-Position: refs/heads/master@{#745165}

chrome/android/java/res/layout/send_tab_to_self_feature_unavailable_prompt.xml

+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 2019 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. -->
+
+<!-- Container for sign in prompt if Sync is disable or no devices are available -->
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:minHeight="@dimen/min_touch_target_size"
+    android:orientation="vertical"
+    android:paddingBottom="32dp">
+
+  <ImageView
+    android:id="@+id/empty_state_image"
+    android:layout_height="wrap_content"
+    android:layout_width ="match_parent"
+    android:contentDescription="@string/sharing_hub_no_devices_available_text"
+    app:srcCompat="@drawable/shared_clipboard_zero_state"/>
+
+  <TextView
+    android:layout_width="match_parent"
+    android:layout_height="@dimen/min_touch_target_size"
+    android:gravity="center"
+    android:paddingStart="30dp"
+    android:paddingEnd="30dp"
+    android:paddingTop="16dp"
+    android:ellipsize="end"
+    android:textAppearance="@style/TextAppearance.BlackToolbarTitle"
+    android:text="@string/sharing_no_devices_available_title"/>
+
+  <TextView
+    android:id='@+id/enable_sync_text_field'
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:gravity="center"
+    android:paddingStart="30dp"
+    android:paddingEnd="30dp"
+    android:paddingTop="16dp"
+    android:ellipsize="end"
+    android:textAppearance="@style/TextAppearance.TextLarge.Secondary"
+    android:text="@string/sharing_hub_sync_disabled_text"/>
+
+  <org.chromium.ui.widget.ButtonCompat
+    android:id="@+id/chrome_settings"
+    android:layout_height="wrap_content"
+    android:layout_width="wrap_content"
+    android:layout_gravity="center"
+    android:layout_marginTop="16dp"
+    android:text="@string/sharing_chrome_settings"
+    android:visibility="gone"
+    style="@style/FilledButton"/>
+</LinearLayout>

chrome/android/java/src/org/chromium/chrome/browser/send_tab_to_self/DevicePickerBottomSheetContent.java

@@ -14,18 +14,28 @@ import android.widget.AdapterView.OnItemClickListener;
 import android.widget.ListView;
 import android.widget.TextView;
 
+import org.chromium.base.ContextUtils;
 import org.chromium.base.metrics.RecordHistogram;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.profiles.Profile;
 import org.chromium.chrome.browser.send_tab_to_self.SendTabToSelfMetrics.SendTabToSelfShareClickResult;
+import org.chromium.chrome.browser.settings.SettingsLauncher;
 import org.chromium.chrome.browser.widget.bottomsheet.BottomSheetContent;
 import org.chromium.chrome.browser.widget.bottomsheet.BottomSheetController;
+import org.chromium.components.sync.AndroidSyncSettings;
 import org.chromium.content_public.browser.NavigationEntry;
+import org.chromium.content_public.browser.WebContents;
+import org.chromium.ui.widget.ButtonCompat;
 import org.chromium.ui.widget.Toast;
 
+import java.util.ArrayList;
+import java.util.List;
+
 /**
  * Bottom sheet content to display a list of devices a user can send a tab to after they have
- * chosen to share it with themselves through the SendTabToSelfFeature.
+ * chosen to share it with themselves through the SendTabToSelfFeature. If sync is disabled
+ * or no target devices are available an prompt will be shown indicating to the user that
+ * they must sign in to use the feature.
  */
 public class DevicePickerBottomSheetContent implements BottomSheetContent, OnItemClickListener {
     private final Context mContext;
@@ -35,14 +45,16 @@ public class DevicePickerBottomSheetContent implements BottomSheetContent, OnIte
     private final DevicePickerBottomSheetAdapter mAdapter;
     private final NavigationEntry mEntry;
     private final Profile mProfile;
+    private final WebContents mWebContents;
 
-    public DevicePickerBottomSheetContent(
-            Context context, NavigationEntry entry, BottomSheetController controller) {
+    public DevicePickerBottomSheetContent(Context context, NavigationEntry entry,
+            BottomSheetController controller, WebContents webContents) {
         mContext = context;
         mController = controller;
         mProfile = Profile.getLastUsedRegularProfile();
         mAdapter = new DevicePickerBottomSheetAdapter(mProfile);
         mEntry = entry;
+        mWebContents = webContents;
 
         createToolbarView();
         createContentView();
@@ -63,12 +75,36 @@ public class DevicePickerBottomSheetContent implements BottomSheetContent, OnIte
     }
 
     private void createContentView() {
-        mContentView = (ViewGroup) LayoutInflater.from(mContext).inflate(
-                R.layout.send_tab_to_self_device_picker_list, null);
-        ListView listView = mContentView.findViewById(R.id.device_picker_list);
-
-        listView.setAdapter(mAdapter);
-        listView.setOnItemClickListener(this);
+        List<TargetDeviceInfo> targetDeviceList = new ArrayList<TargetDeviceInfo>();
+        SendTabToSelfAndroidBridgeJni.get().getAllTargetDeviceInfos(mProfile, targetDeviceList);
+
+        if (!AndroidSyncSettings.get().isChromeSyncEnabled()) {
+            mContentView = (ViewGroup) LayoutInflater.from(mContext).inflate(
+                    R.layout.send_tab_to_self_feature_unavailable_prompt, null);
+            mToolbarView.setVisibility(View.GONE);
+            enableSettingsButton();
+        } else if (targetDeviceList.isEmpty()) {
+            mContentView = (ViewGroup) LayoutInflater.from(mContext).inflate(
+                    R.layout.send_tab_to_self_feature_unavailable_prompt, null);
+            mToolbarView.setVisibility(View.GONE);
+            TextView textView = mContentView.findViewById(R.id.enable_sync_text_field);
+            textView.setText(mContext.getResources().getString(
+                    R.string.sharing_hub_no_devices_available_text));
+        } else {
+            mContentView = (ViewGroup) LayoutInflater.from(mContext).inflate(
+                    R.layout.send_tab_to_self_device_picker_list, null);
+            ListView listView = mContentView.findViewById(R.id.device_picker_list);
+            listView.setAdapter(mAdapter);
+            listView.setOnItemClickListener(this);
+        }
+    }
+
+    private void enableSettingsButton() {
+        ButtonCompat chromeSettingsButton = mContentView.findViewById(R.id.chrome_settings);
+        chromeSettingsButton.setVisibility(View.VISIBLE);
+        chromeSettingsButton.setOnClickListener(view -> {
+            SettingsLauncher.getInstance().launchSettingsPage(ContextUtils.getApplicationContext());
+        });
     }
 
     @Override

chrome/android/java/src/org/chromium/chrome/browser/send_tab_to_self/SendTabToSelfShareActivity.java

@@ -15,6 +15,7 @@ import org.chromium.chrome.browser.tab.Tab;
 import org.chromium.chrome.browser.widget.bottomsheet.BottomSheetContent;
 import org.chromium.chrome.browser.widget.bottomsheet.BottomSheetController;
 import org.chromium.content_public.browser.NavigationEntry;
+import org.chromium.content_public.browser.WebContents;
 
 /**
  * A simple activity that allows Chrome to expose send tab to self as an option in the share menu.
@@ -27,29 +28,31 @@ public class SendTabToSelfShareActivity extends ShareActivity {
         Tab tab = triggeringActivity.getActivityTabProvider().get();
         if (tab == null) return;
         NavigationEntry entry = tab.getWebContents().getNavigationController().getVisibleEntry();
-        actionHandler(triggeringActivity, entry, triggeringActivity.getBottomSheetController());
+        actionHandler(triggeringActivity, entry, triggeringActivity.getBottomSheetController(),
+                tab.getWebContents());
     }
 
-    public static void actionHandler(
-            Context context, NavigationEntry entry, BottomSheetController controller) {
+    public static void actionHandler(Context context, NavigationEntry entry,
+            BottomSheetController controller, WebContents webContents) {
         if (entry == null || controller == null) {
             return;
         }
 
         SendTabToSelfShareClickResult.recordClickResult(
                 SendTabToSelfShareClickResult.ClickType.SHOW_DEVICE_LIST);
-        controller.requestShowContent(createBottomSheetContent(context, entry, controller), true);
+        controller.requestShowContent(
+                createBottomSheetContent(context, entry, controller, webContents), true);
         // TODO(crbug.com/968246): Remove the need to call this explicitly and instead have it
         // automatically show since PeekStateEnabled is set to false.
         controller.expandSheet();
     }
 
-    static BottomSheetContent createBottomSheetContent(
-            Context context, NavigationEntry entry, BottomSheetController controller) {
+    static BottomSheetContent createBottomSheetContent(Context context, NavigationEntry entry,
+            BottomSheetController controller, WebContents webContents) {
         if (sBottomSheetContentForTesting != null) {
             return sBottomSheetContentForTesting;
         }
-        return new DevicePickerBottomSheetContent(context, entry, controller);
+        return new DevicePickerBottomSheetContent(context, entry, controller, webContents);
     }
 
     public static boolean featureIsAvailable(Tab currentTab) {

chrome/android/java/src/org/chromium/chrome/browser/share/ShareSheetCoordinator.java

@@ -127,7 +127,8 @@ public class ShareSheetCoordinator {
                                                     .getWebContents()
                                                     .getNavigationController()
                                                     .getVisibleEntry(),
-                                            mBottomSheetController);
+                                            mBottomSheetController,
+                                            mActivityTabProvider.get().getWebContents());
                                 },
                                 /*isFirstParty=*/true);
         models.add(sttsPropertyModel);

chrome/browser/ui/android/strings/android_chrome_strings.grd

@@ -3755,6 +3755,14 @@ Only you can see what your camera is looking at. The site can't see your camera'
         Go to Chrome settings
       </message>
 
+      <!-- Sharing Hub -->
+      <message name="IDS_SHARING_HUB_NO_DEVICES_AVAILABLE_TEXT" desc="Text to show when no device targets are available for sharing.">
+        To share this page to another device, turn on sync in Chrome settings on the other device
+      </message>
+      <message name="IDS_SHARING_HUB_SYNC_DISABLED_TEXT" desc="Text to show when sync is disabled on the current device.">
+        To share this page to another device, turn on sync in Chrome settings
+      </message>
+
       <!-- ClickToCall -->
       <message name="IDS_CLICK_TO_CALL_NOTIFICATION_TEXT" desc="Text displayed in a click to call notification to call on a number.">
         Tap to make call

chrome/browser/ui/android/strings/android_chrome_strings_grd/IDS_CLICK_TO_CALL_NOTIFICATION_TEXT.png.sha1

+078525488df5adcf0bd41fea9c76a0e00fb70bc6
\ No newline at end of file

chrome/browser/ui/android/strings/android_chrome_strings_grd/IDS_SHARING_HUB_SYNC_DISABLED_TEXT.png.sha1

+a310f54db36e300eabed4bd7ac059f14d9fd24e9
\ No newline at end of file