src/chrome/installer/util/conditional_work_item_list.cc

   1 // Copyright (c) 2010 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/installer/util/conditional_work_item_list.h"
   6
   7 #include "base/file_util.h"
   8 #include "base/logging.h"
   9
  10 ConditionalWorkItemList::ConditionalWorkItemList(Condition* condition)
  11     : condition_(condition) {
  12 }
  13
  14 ConditionalWorkItemList::~ConditionalWorkItemList() {}
  15
  16 bool ConditionalWorkItemList::Do() {
  17   VLOG(1) << "Evaluating " << log_message_ << " condition...";
  18   if (condition_.get() && condition_->ShouldRun()) {
  19     VLOG(1) << "Beginning conditional work item list";
  20     return WorkItemList::Do();
  21   }
  22   VLOG(1) << "No work to do in condition work item list "
  23           << log_message_;
  24   return true;
  25 }
  26
  27 void ConditionalWorkItemList::Rollback() {
  28   VLOG(1) << "Rolling back conditional list " << log_message_;
  29   WorkItemList::Rollback();
  30 }
  31
  32 // Pre-defined conditions:
  33 //------------------------------------------------------------------------------
  34 bool ConditionRunIfFileExists::ShouldRun() const {
  35   return base::PathExists(key_path_);
  36 }
  37
  38 bool Not::ShouldRun() const {
  39   return !original_condition_->ShouldRun();
  40 }
  41