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 "components/browser_context_keyed_service/refcounted_browser_context_keyed_service_factory.h"
6
7 #include "base/logging.h"
8 #include "base/stl_util.h"
9 #include "content/public/browser/browser_context.h"
10 #include "components/browser_context_keyed_service/browser_context_keyed_service.h"
11 #include "components/browser_context_keyed_service/refcounted_browser_context_keyed_service.h"
12
SetTestingFactory(content::BrowserContext * context,TestingFactoryFunction testing_factory)13 void RefcountedBrowserContextKeyedServiceFactory::SetTestingFactory(
14 content::BrowserContext* context,
15 TestingFactoryFunction testing_factory) {
16 // Destroying the context may cause us to lose data about whether |context|
17 // has our preferences registered on it (since the context object itself
18 // isn't dead). See if we need to readd it once we've gone through normal
19 // destruction.
20 bool add_context = ArePreferencesSetOn(context);
21
22 // We have to go through the shutdown and destroy mechanisms because there
23 // are unit tests that create a service on a context and then change the
24 // testing service mid-test.
25 BrowserContextShutdown(context);
26 BrowserContextDestroyed(context);
27
28 if (add_context)
29 MarkPreferencesSetOn(context);
30
31 testing_factories_[context] = testing_factory;
32 }
33
34 scoped_refptr<RefcountedBrowserContextKeyedService>
SetTestingFactoryAndUse(content::BrowserContext * context,TestingFactoryFunction testing_factory)35 RefcountedBrowserContextKeyedServiceFactory::SetTestingFactoryAndUse(
36 content::BrowserContext* context,
37 TestingFactoryFunction testing_factory) {
38 DCHECK(testing_factory);
39 SetTestingFactory(context, testing_factory);
40 return GetServiceForBrowserContext(context, true);
41 }
42
43 RefcountedBrowserContextKeyedServiceFactory::
RefcountedBrowserContextKeyedServiceFactory(const char * name,BrowserContextDependencyManager * manager)44 RefcountedBrowserContextKeyedServiceFactory(
45 const char* name,
46 BrowserContextDependencyManager* manager)
47 : BrowserContextKeyedBaseFactory(name, manager) {
48 }
49
50 RefcountedBrowserContextKeyedServiceFactory::
~RefcountedBrowserContextKeyedServiceFactory()51 ~RefcountedBrowserContextKeyedServiceFactory() {
52 DCHECK(mapping_.empty());
53 }
54
55 scoped_refptr<RefcountedBrowserContextKeyedService>
GetServiceForBrowserContext(content::BrowserContext * context,bool create)56 RefcountedBrowserContextKeyedServiceFactory::GetServiceForBrowserContext(
57 content::BrowserContext* context,
58 bool create) {
59 context = GetBrowserContextToUse(context);
60 if (!context)
61 return NULL;
62
63 // NOTE: If you modify any of the logic below, make sure to update the
64 // non-refcounted version in context_keyed_service_factory.cc!
65 RefCountedStorage::const_iterator it = mapping_.find(context);
66 if (it != mapping_.end())
67 return it->second;
68
69 // Object not found.
70 if (!create)
71 return NULL; // And we're forbidden from creating one.
72
73 // Create new object.
74 // Check to see if we have a per-BrowserContext testing factory that we should
75 // use instead of default behavior.
76 scoped_refptr<RefcountedBrowserContextKeyedService> service;
77 BrowserContextOverriddenTestingFunctions::const_iterator jt =
78 testing_factories_.find(context);
79 if (jt != testing_factories_.end()) {
80 if (jt->second) {
81 if (!context->IsOffTheRecord())
82 RegisterUserPrefsOnBrowserContextForTest(context);
83 service = jt->second(context);
84 }
85 } else {
86 service = BuildServiceInstanceFor(context);
87 }
88
89 Associate(context, service);
90 return service;
91 }
92
Associate(content::BrowserContext * context,const scoped_refptr<RefcountedBrowserContextKeyedService> & service)93 void RefcountedBrowserContextKeyedServiceFactory::Associate(
94 content::BrowserContext* context,
95 const scoped_refptr<RefcountedBrowserContextKeyedService>& service) {
96 DCHECK(!ContainsKey(mapping_, context));
97 mapping_.insert(std::make_pair(context, service));
98 }
99
BrowserContextShutdown(content::BrowserContext * context)100 void RefcountedBrowserContextKeyedServiceFactory::BrowserContextShutdown(
101 content::BrowserContext* context) {
102 RefCountedStorage::iterator it = mapping_.find(context);
103 if (it != mapping_.end() && it->second.get())
104 it->second->ShutdownOnUIThread();
105 }
106
BrowserContextDestroyed(content::BrowserContext * context)107 void RefcountedBrowserContextKeyedServiceFactory::BrowserContextDestroyed(
108 content::BrowserContext* context) {
109 // We "merely" drop our reference to the service. Hopefully this will cause
110 // the service to be destroyed. If not, oh well.
111 mapping_.erase(context);
112
113 // For unit tests, we also remove the factory function both so we don't
114 // maintain a big map of dead pointers, but also since we may have a second
115 // object that lives at the same address (see other comments about unit tests
116 // in this file).
117 testing_factories_.erase(context);
118
119 BrowserContextKeyedBaseFactory::BrowserContextDestroyed(context);
120 }
121
SetEmptyTestingFactory(content::BrowserContext * context)122 void RefcountedBrowserContextKeyedServiceFactory::SetEmptyTestingFactory(
123 content::BrowserContext* context) {
124 SetTestingFactory(context, NULL);
125 }
126
CreateServiceNow(content::BrowserContext * context)127 void RefcountedBrowserContextKeyedServiceFactory::CreateServiceNow(
128 content::BrowserContext* context) {
129 GetServiceForBrowserContext(context, true);
130 }
131