chrome/browser/chromeos/policy/proxy_policy_provider.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/chromeos/policy/proxy_policy_provider.h"
   6
   7 namespace policy {
   8
   9 ProxyPolicyProvider::ProxyPolicyProvider() : delegate_(NULL) {}
  10
  11 ProxyPolicyProvider::~ProxyPolicyProvider() {
  12   DCHECK(!delegate_);
  13 }
  14
  15 void ProxyPolicyProvider::SetDelegate(ConfigurationPolicyProvider* delegate) {
  16   if (delegate_)
  17     delegate_->RemoveObserver(this);
  18   delegate_ = delegate;
  19   if (delegate_) {
  20     delegate_->AddObserver(this);
  21     OnUpdatePolicy(delegate_);
  22   } else {
  23     UpdatePolicy(scoped_ptr<PolicyBundle>(new PolicyBundle()));
  24   }
  25 }
  26
  27 void ProxyPolicyProvider::Shutdown() {
  28   // Note: the delegate is not owned by the proxy provider, so this call is not
  29   // forwarded. The same applies for the Init() call.
  30   // Just drop the delegate without propagating updates here.
  31   if (delegate_) {
  32     delegate_->RemoveObserver(this);
  33     delegate_ = NULL;
  34   }
  35   ConfigurationPolicyProvider::Shutdown();
  36 }
  37
  38 void ProxyPolicyProvider::RefreshPolicies() {
  39   if (delegate_) {
  40     delegate_->RefreshPolicies();
  41   } else {
  42     // Subtle: if a RefreshPolicies() call comes after Shutdown() then the
  43     // current bundle should be served instead. This also does the right thing
  44     // if SetDelegate() was never called before.
  45     scoped_ptr<PolicyBundle> bundle(new PolicyBundle());
  46     bundle->CopyFrom(policies());
  47     UpdatePolicy(bundle.Pass());
  48   }
  49 }
  50
  51 void ProxyPolicyProvider::OnUpdatePolicy(
  52     ConfigurationPolicyProvider* provider) {
  53   DCHECK_EQ(delegate_, provider);
  54   scoped_ptr<PolicyBundle> bundle(new PolicyBundle());
  55   bundle->CopyFrom(delegate_->policies());
  56   UpdatePolicy(bundle.Pass());
  57 }
  58
  59 }  // namespace policy