chrome/browser/ui/webui/ntp/android/new_tab_page_ready_handler.cc

   1 // Copyright (c) 2012 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/ui/webui/ntp/android/new_tab_page_ready_handler.h"
   6
   7 #include "base/bind.h"
   8 #include "base/logging.h"
   9 #include "base/values.h"
  10 #include "chrome/browser/android/tab_android.h"
  11 #include "content/public/browser/web_contents.h"
  12 #include "content/public/browser/web_ui.h"
  13
  14 NewTabPageReadyHandler::NewTabPageReadyHandler() {
  15 }
  16
  17 NewTabPageReadyHandler::~NewTabPageReadyHandler() {
  18 }
  19
  20 void NewTabPageReadyHandler::RegisterMessages() {
  21   web_ui()->RegisterMessageCallback("notifyNTPReady", base::Bind(
  22       &NewTabPageReadyHandler::HandleNewTabPageReady, base::Unretained(this)));
  23   web_ui()->RegisterMessageCallback("NTPUnexpectedNavigation", base::Bind(
  24       &NewTabPageReadyHandler::HandleNewTabPageUnexpectedNavigation,
  25       base::Unretained(this)));
  26   web_ui()->RegisterMessageCallback("notifyNTPTitleLoaded", base::Bind(
  27       &NewTabPageReadyHandler::HandleNewTabPageTitleLoaded,
  28       base::Unretained(this)));
  29 }
  30
  31 void NewTabPageReadyHandler::HandleNewTabPageTitleLoaded(
  32     const base::ListValue* args) {
  33   web_ui()->OverrideTitle(base::string16());
  34 }
  35
  36 void NewTabPageReadyHandler::HandleNewTabPageReady(
  37     const base::ListValue* args) {
  38   TabAndroid* tab = TabAndroid::FromWebContents(web_ui()->GetWebContents());
  39   if (!tab)
  40     return;
  41   tab->OnNewTabPageReady();
  42 }
  43
  44 void NewTabPageReadyHandler::HandleNewTabPageUnexpectedNavigation(
  45     const base::ListValue* args) {
  46   // NTP reached an unexpected state trying to send finish loading notification
  47   // a second time.  The notification should be sent only when page is
  48   // completely done loading. This could otherwise create a race condition in
  49   // tests waiting for the NTP to have loaded (any navigation NTP does after
  50   // loading could interfere with the test navigation).
  51   NOTREACHED();
  52 }