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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/policy/forwarding_policy_provider.h"
#include "chrome/browser/policy/schema_map.h"
#include "chrome/browser/policy/schema_registry.h"
namespace policy {
ForwardingPolicyProvider::ForwardingPolicyProvider(
ConfigurationPolicyProvider* delegate)
: delegate_(delegate), state_(WAITING_FOR_REGISTRY_READY) {
delegate_->AddObserver(this);
// Serve the initial |delegate_| policies.
OnUpdatePolicy(delegate_);
}
ForwardingPolicyProvider::~ForwardingPolicyProvider() {
delegate_->RemoveObserver(this);
}
void ForwardingPolicyProvider::Init(SchemaRegistry* registry) {
ConfigurationPolicyProvider::Init(registry);
if (registry->IsReady())
OnSchemaRegistryReady();
}
bool ForwardingPolicyProvider::IsInitializationComplete(PolicyDomain domain)
const {
if (domain == POLICY_DOMAIN_CHROME)
return delegate_->IsInitializationComplete(domain);
// This provider keeps its own state for all the other domains.
return state_ == READY;
}
void ForwardingPolicyProvider::RefreshPolicies() {
delegate_->RefreshPolicies();
}
void ForwardingPolicyProvider::OnSchemaRegistryReady() {
DCHECK_EQ(WAITING_FOR_REGISTRY_READY, state_);
// This provider's registry is ready, meaning that it has all the initial
// components schemas; the delegate's registry should also see them now,
// since it's tracking the former.
// Asking the delegate to RefreshPolicies now means that the next
// OnUpdatePolicy from the delegate will have the initial policy for
// components.
if (!schema_map()->HasComponents()) {
// If there are no component registered for this provider then there's no
// need to reload.
state_ = READY;
OnUpdatePolicy(delegate_);
return;
}
state_ = WAITING_FOR_REFRESH;
RefreshPolicies();
}
void ForwardingPolicyProvider::OnSchemaRegistryUpdated(bool has_new_schemas) {
if (!has_new_schemas || state_ != READY)
return;
RefreshPolicies();
}
void ForwardingPolicyProvider::OnUpdatePolicy(
ConfigurationPolicyProvider* provider) {
DCHECK_EQ(delegate_, provider);
if (state_ == WAITING_FOR_REFRESH)
state_ = READY;
scoped_ptr<PolicyBundle> bundle(new PolicyBundle());
if (state_ == READY) {
bundle->CopyFrom(delegate_->policies());
schema_map()->FilterBundle(bundle.get());
} else {
// Always forward the Chrome policy, even if the components are not ready
// yet.
const PolicyNamespace chrome_ns(POLICY_DOMAIN_CHROME, "");
bundle->Get(chrome_ns).CopyFrom(delegate_->policies().Get(chrome_ns));
}
UpdatePolicy(bundle.Pass());
}
} // namespace policy
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