Prototype handling of Intents in Custom Tabs

chrome/android/java/src/org/chromium/chrome/browser/document/ChromeLauncherActivity.java

 // Copyright 2015 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.document;
 
 import android.annotation.SuppressLint;
 import android.annotation.TargetApi;
 import android.app.Activity;
 import android.app.ActivityManager;
 import android.app.ActivityManager.AppTask;
 import android.app.ActivityManager.RecentTaskInfo;
 import android.app.ActivityOptions;
 import android.app.Notification;
 import android.app.PendingIntent;
 import android.app.SearchManager;
 import android.content.ClipData;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
+import android.os.StrictMode;
 import android.os.TransactionTooLargeException;
 import android.provider.Browser;
 import android.support.customtabs.CustomTabsIntent;
 import android.text.TextUtils;
 
 import org.chromium.base.ApiCompatibilityUtils;
 import org.chromium.base.ApplicationStatus;
 import org.chromium.base.CommandLineInitUtil;
 import org.chromium.base.Log;
 import org.chromium.base.TraceEvent;
 import org.chromium.chrome.browser.ChromeApplication;
+import org.chromium.chrome.browser.ChromeSwitches;
 import org.chromium.chrome.browser.ChromeTabbedActivity;
+import org.chromium.chrome.browser.ChromeVersionInfo;
 import org.chromium.chrome.browser.IntentHandler;
 import org.chromium.chrome.browser.IntentHandler.TabOpenType;
 import org.chromium.chrome.browser.ShortcutHelper;
 import org.chromium.chrome.browser.ShortcutSource;
 import org.chromium.chrome.browser.UrlConstants;
 import org.chromium.chrome.browser.WarmupManager;
 import org.chromium.chrome.browser.customtabs.CustomTabActivity;
 import org.chromium.chrome.browser.externalnav.IntentWithGesturesHandler;
 import org.chromium.chrome.browser.firstrun.FirstRunFlowSequencer;
 import org.chromium.chrome.browser.metrics.LaunchHistogram;
@@ skipping 223 matching lines @@
     }
 
     @Override
     public void processUrlViewIntent(String url, String referer, String headers,
             IntentHandler.TabOpenType tabOpenType, String externalAppId,
             int tabIdToBringToFront, boolean hasUserGesture, Intent intent) {
         assert false;
     }
 
     /**
+     * @return Whether or not a Custom Tab will be used for the incoming Intent.
+     */
+    private boolean isIntentHandledByHerb() {
+        if (ChromeVersionInfo.isStableBuild() || ChromeVersionInfo.isBetaBuild()) return false;
+
+        // Allowing disk access for preferences while prototyping.
+        String flavor = null;
+        StrictMode.ThreadPolicy oldPolicy = StrictMode.allowThreadDiskReads();
+        try {
+            flavor = ChromePreferenceManager.getInstance(this).getHerbFlavor();
+        } finally {
+            StrictMode.setThreadPolicy(oldPolicy);
+        }
+        Log.d(TAG, "Herb flavor: " + flavor);
+        if (TextUtils.isEmpty(flavor)) return false;
+
+        // Only VIEW Intents are rerouted to Custom Tabs.
+        if (!TextUtils.equals(getIntent().getAction(), Intent.ACTION_VIEW)) return false;
+
+        if (TextUtils.equals(flavor, ChromeSwitches.HERB_FLAVOR_ANISE)
+                || TextUtils.equals(flavor, ChromeSwitches.HERB_FLAVOR_BASIL)) {
+            // Only Intents without NEW_TASK and NEW_DOCUMENT will trigger a Custom Tab.
+            boolean isSameTask = (getIntent().getFlags() & Intent.FLAG_ACTIVITY_NEW_TASK) == 0;
+            boolean isSameDocument =
+                    (getIntent().getFlags() & Intent.FLAG_ACTIVITY_NEW_DOCUMENT) == 0;
+            Log.d(TAG, "Herb Intent proprties -- SAME TASK: "
+                    + isSameTask + ", SAME DOCUMENT: " + isSameDocument);
+            return isSameTask && isSameDocument;
+        } else if (TextUtils.equals(flavor, ChromeSwitches.HERB_FLAVOR_CHIVE)) {
+            // Chive sends all View Intents to the main browser.
+            return false;
+        } else if (TextUtils.equals(flavor, ChromeSwitches.HERB_FLAVOR_DILL)) {
+            // Dill always opens View Intents in Custom Tabs -- even home screen shortcuts.
+            return true;
+        } else {
+            assert false;
+            return false;
+        }
+    }
+
+    /**
      * @return Whether the intent sent is for launching a Custom Tab.
      */
     private boolean isCustomTabIntent() {
-        if (getIntent() == null || !getIntent().hasExtra(CustomTabsIntent.EXTRA_SESSION)) {
+        if (getIntent() == null || (!getIntent().hasExtra(CustomTabsIntent.EXTRA_SESSION)
+                && !isIntentHandledByHerb())) {
             return false;
         }
 
         String url = IntentHandler.getUrlFromIntent(getIntent());
         if (url == null) return false;
 
         if (!ChromePreferenceManager.getInstance(this).getCustomTabsEnabled()) return false;
         return true;
     }
 
@@ skipping 531 matching lines @@
         return true;
     }
 
     /**
      * Send the number of times an exception was caught when trying to move a task back to front.
      */
     public static void sendExceptionCount() {
         sMoveToFrontExceptionHistogram.commitHistogram();
     }
 }