[Android] Show notification for opening new tab in background of Browser Actions

chrome/android/java/src/org/chromium/chrome/browser/browseractions/BrowserActionsContextMenuItemDelegate.java

Index: chrome/android/java/src/org/chromium/chrome/browser/browseractions/BrowserActionsContextMenuItemDelegate.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/browseractions/BrowserActionsContextMenuItemDelegate.java b/chrome/android/java/src/org/chromium/chrome/browser/browseractions/BrowserActionsContextMenuItemDelegate.java
index 0c0f775c285db2fa0ddb146bcab885e8b5406614..6e49a3fa71db775d7c06a0391299e73c120d9dba 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/browseractions/BrowserActionsContextMenuItemDelegate.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/browseractions/BrowserActionsContextMenuItemDelegate.java
@@ -4,7 +4,9 @@
 
 package org.chromium.chrome.browser.browseractions;
 
+import android.annotation.TargetApi;
 import android.app.Activity;
+import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.app.PendingIntent.CanceledException;
 import android.content.ClipData;
@@ -12,13 +14,21 @@ import android.content.ClipboardManager;
 import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
+import android.os.Build;
 import android.provider.Browser;
+import android.service.notification.StatusBarNotification;
 
 import org.chromium.base.ContextUtils;
 import org.chromium.base.Log;
 import org.chromium.chrome.R;
+import org.chromium.chrome.browser.ChromeTabbedActivity;
 import org.chromium.chrome.browser.IntentHandler;
 import org.chromium.chrome.browser.document.ChromeLauncherActivity;
+import org.chromium.chrome.browser.notifications.ChannelDefinitions;
+import org.chromium.chrome.browser.notifications.ChromeNotificationBuilder;
+import org.chromium.chrome.browser.notifications.NotificationBuilderFactory;
+import org.chromium.chrome.browser.notifications.NotificationConstants;
+import org.chromium.chrome.browser.notifications.NotificationUmaTracker;
 import org.chromium.chrome.browser.util.IntentUtils;
 import org.chromium.ui.widget.Toast;
 
@@ -27,9 +37,62 @@ import org.chromium.ui.widget.Toast;
  */
 public class BrowserActionsContextMenuItemDelegate {
     private static final String TAG = "BrowserActionsItem";
+    /**
+     * Action to request open ChromeTabbedActivity in tab switcher mode.
+     */
+    public static final String ACTION_BROWSER_ACTIONS_OPEN_IN_BACKGROUND =
+            "org.chromium.chrome.browser.browseractions.browser_action_open_in_background";
+
+    /**
+     * Extra that indicates whether to show a Tab for single url or the tab swictcher for
+     * multiple urls.
+     */
+    public static final String EXTRA_IS_SINGLE_URL =
+            "org.chromium.chrome.browser.browseractions.is_single_url";
 
     private final Context mContext;
     private final Activity mActivity;
+    private final NotificationManager mNotificationManager;
+
+    private void sendBrowserActionsNotification(String linkUrl) {
+        Intent intent = new Intent(mContext, ChromeTabbedActivity.class);
+        intent.setAction(ACTION_BROWSER_ACTIONS_OPEN_IN_BACKGROUND);
+        intent.putExtra(EXTRA_IS_SINGLE_URL, true);
+        ChromeNotificationBuilder builder =
+                NotificationBuilderFactory
+                        .createChromeNotificationBuilder(
+                                true /* preferCompat */, ChannelDefinitions.CHANNEL_ID_BROWSER)
+                        .setSmallIcon(R.drawable.infobar_chrome)
+                        .setLocalOnly(true)
+                        .setAutoCancel(true)
+                        .setContentText(
+                                mContext.getString(R.string.browser_actions_notification_text))
+                        .setContentTitle(mContext.getString(
+                                R.string.browser_actions_single_link_open_notification_title));
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && hasBrowserActionsNotification()) {
+            builder.setContentTitle(mContext.getString(
+                    R.string.browser_actions_multi_links_open_notification_title));
+            intent.putExtra(EXTRA_IS_SINGLE_URL, false);
+        }
+        PendingIntent notifyPendingIntent =
+                PendingIntent.getActivity(mContext, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
+        builder.setContentIntent(notifyPendingIntent);
+        mNotificationManager.notify(
+                NotificationConstants.NOTIFICATION_ID_BROWSER_ACTIONS, builder.build());
+        NotificationUmaTracker.getInstance().onNotificationShown(
+                NotificationUmaTracker.BROWSER_ACTIONS, ChannelDefinitions.CHANNEL_ID_BROWSER);
+    }
+
+    @TargetApi(Build.VERSION_CODES.M)
+    private boolean hasBrowserActionsNotification() {
+        StatusBarNotification[] notifications = mNotificationManager.getActiveNotifications();
+        for (StatusBarNotification notification : notifications) {
+            if (notification.getId() == NotificationConstants.NOTIFICATION_ID_BROWSER_ACTIONS) {
+                return true;
+            }
+        }
+        return false;
+    }
 
     /**
      * Builds a {@link BrowserActionsContextMenuItemDelegate} instance.
@@ -37,6 +100,8 @@ public class BrowserActionsContextMenuItemDelegate {
     public BrowserActionsContextMenuItemDelegate(Activity activity) {
         mContext = ContextUtils.getApplicationContext();
         mActivity = activity;
+        mNotificationManager =
+                (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
     }
 
     /**
@@ -71,7 +136,12 @@ public class BrowserActionsContextMenuItemDelegate {
      * Called when the {@code linkUrl} should be opened in Chrome in the background.
      * @param linkUrl The url to open.
      */
-    public void onOpenInBackground(String linkUrl) {}
+    public void onOpenInBackground(String linkUrl) {
+        sendBrowserActionsNotification(linkUrl);
+        Toast.makeText(mContext, R.string.browser_actions_open_in_background_toast_message,
+                     Toast.LENGTH_SHORT)
+                .show();
+    }
 
     /**
      * Called when a custom item of Browser action menu is selected.