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      1 // Copyright (c) 2013 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/browser_iterator.h"
      6 
      7 namespace chrome {
      8 
      9 BrowserIterator::BrowserIterator()
     10     : current_browser_list_(BrowserList::GetInstance(HOST_DESKTOP_TYPE_FIRST)),
     11       current_iterator_(current_browser_list_->begin()),
     12       next_desktop_type_(
     13           static_cast<HostDesktopType>(HOST_DESKTOP_TYPE_FIRST + 1)) {
     14   NextBrowserListIfAtEnd();
     15 }
     16 
     17 BrowserIterator::~BrowserIterator() {
     18 }
     19 
     20 void BrowserIterator::Next() {
     21   ++current_iterator_;
     22   NextBrowserListIfAtEnd();
     23 }
     24 
     25 void BrowserIterator::NextBrowserListIfAtEnd() {
     26   // Make sure either |current_iterator_| is valid or done().
     27   while (current_iterator_ == current_browser_list_->end() &&
     28          next_desktop_type_ < HOST_DESKTOP_TYPE_COUNT) {
     29     current_browser_list_ = BrowserList::GetInstance(next_desktop_type_);
     30     current_iterator_ = current_browser_list_->begin();
     31     next_desktop_type_ = static_cast<HostDesktopType>(next_desktop_type_ + 1);
     32   }
     33 }
     34 
     35 }  // namespace chrome
     36