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 base::CommandLine& command_line =
  28       *base::CommandLine::ForCurrentProcess();
  29   if (command_line.HasSwitch(
  30       switches::kDisableGestureRequirementForMediaPlayback))
  31     return;
  32
  33   WebContents* web_contents = WebContents::FromJavaWebContents(j_web_contents);
  34   content::RenderViewHost* host = web_contents->GetRenderViewHost();
  35   content::WebPreferences prefs = host->GetWebkitPreferences();
  36
  37   bool gesture_required =
  38       !google_util::IsGoogleSearchUrl(web_contents->GetLastCommittedURL());
  39
  40   if (gesture_required != prefs.user_gesture_required_for_media_playback) {
  41     // TODO(chrishtr): this is wrong. user_gesture_required_for_media_playback
  42     // will be reset the next time a preference changes.
  43     prefs.user_gesture_required_for_media_playback =
  44         !google_util::IsGoogleSearchUrl(web_contents->GetLastCommittedURL());
  45     host->UpdateWebkitPreferences(prefs);
  46   }
  47 }