chrome/browser/android/voice_search_tab_helper.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/android/voice_search_tab_helper.h"
   6
   7 #include "base/command_line.h"
   8 #include "components/google/core/browser/google_util.h"
   9 #include "content/public/browser/render_view_host.h"
  10 #include "content/public/browser/web_contents.h"
  11 #include "content/public/common/content_switches.h"
  12 #include "content/public/common/web_preferences.h"
  13 #include "jni/VoiceSearchTabHelper_jni.h"
  14
  15 using content::WebContents;
  16
  17 // Register native methods
  18 bool RegisterVoiceSearchTabHelper(JNIEnv* env) {
  19   return RegisterNativesImpl(env);
  20 }
  21
  22 static void UpdateAutoplayStatus(JNIEnv* env,
  23                                  jobject obj,
  24                                  jobject j_web_contents) {
  25   // In the case where media autoplay has been disabled by default (e.g. in
  26   // performance media tests) do not update it based on navigation changes.
  27   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
  28   if (command_line.HasSwitch(
  29       switches::kDisableGestureRequirementForMediaPlayback))
  30     return;
  31
  32   WebContents* web_contents = WebContents::FromJavaWebContents(j_web_contents);
  33   content::RenderViewHost* host = web_contents->GetRenderViewHost();
  34   content::WebPreferences prefs = host->GetWebkitPreferences();
  35
  36   bool gesture_required =
  37       !google_util::IsGoogleSearchUrl(web_contents->GetLastCommittedURL());
  38
  39   if (gesture_required != prefs.user_gesture_required_for_media_playback) {
  40     // TODO(chrishtr): this is wrong. user_gesture_required_for_media_playback
  41     // will be reset the next time a preference changes.
  42     prefs.user_gesture_required_for_media_playback =
  43         !google_util::IsGoogleSearchUrl(web_contents->GetLastCommittedURL());
  44     host->UpdateWebkitPreferences(prefs);
  45   }
  46 }