chrome/browser/ui/ash/user_action_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/ash/user_action_handler.h"
   6
   7 #include "ash/wm/window_util.h"
   8 #include "chrome/browser/ui/browser.h"
   9 #include "chrome/browser/ui/browser_finder.h"
  10 #include "chrome/browser/ui/browser_window.h"
  11 #include "chrome/browser/ui/tabs/tab_strip_model.h"
  12 #include "content/public/browser/web_contents.h"
  13
  14 // Returns the currently-active WebContents belonging to the active browser, or
  15 // NULL if there's no currently-active browser.
  16 content::WebContents* GetActiveWebContents() {
  17   Browser* browser = chrome::FindLastActiveWithHostDesktopType(
  18       chrome::HOST_DESKTOP_TYPE_ASH);
  19   if (!browser)
  20     return NULL;
  21   if (!ash::wm::IsActiveWindow(browser->window()->GetNativeWindow()))
  22     return NULL;
  23
  24   return browser->tab_strip_model()->GetActiveWebContents();
  25 }
  26
  27 UserActionHandler::UserActionHandler() {}
  28
  29 UserActionHandler::~UserActionHandler() {}
  30
  31 bool UserActionHandler::OnUserAction(
  32     aura::client::UserActionClient::Command command) {
  33   switch (command) {
  34     case aura::client::UserActionClient::BACK: {
  35       content::WebContents* contents = GetActiveWebContents();
  36       if (contents && contents->GetController().CanGoBack()) {
  37         contents->GetController().GoBack();
  38         return true;
  39       }
  40       break;
  41     }
  42     case aura::client::UserActionClient::FORWARD: {
  43       content::WebContents* contents = GetActiveWebContents();
  44       if (contents && contents->GetController().CanGoForward()) {
  45         contents->GetController().GoForward();
  46         return true;
  47       }
  48       break;
  49     }
  50     default:
  51       break;
  52   }
  53   return false;
  54 }