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/extensions/api/tabs/windows_event_router.h"
6
7 #include "base/values.h"
8 #include "chrome/browser/chrome_notification_types.h"
9 #include "chrome/browser/extensions/extension_service.h"
10 #include "chrome/browser/extensions/extension_util.h"
11 #include "chrome/browser/extensions/window_controller.h"
12 #include "chrome/browser/extensions/window_controller_list.h"
13 #include "chrome/browser/profiles/profile.h"
14 #include "chrome/common/extensions/api/windows.h"
15 #include "chrome/common/extensions/extension_constants.h"
16 #include "content/public/browser/notification_service.h"
17 #include "extensions/browser/event_router.h"
18 #include "extensions/common/constants.h"
19
20 using content::BrowserContext;
21
22 namespace extensions {
23
24 namespace windows = extensions::api::windows;
25
WindowsEventRouter(Profile * profile)26 WindowsEventRouter::WindowsEventRouter(Profile* profile)
27 : profile_(profile),
28 focused_profile_(NULL),
29 focused_window_id_(extension_misc::kUnknownWindowId) {
30 DCHECK(!profile->IsOffTheRecord());
31
32 WindowControllerList::GetInstance()->AddObserver(this);
33 #if defined(TOOLKIT_VIEWS)
34 views::WidgetFocusManager::GetInstance()->AddFocusChangeListener(this);
35 #elif defined(OS_MACOSX)
36 // Needed for when no suitable window can be passed to an extension as the
37 // currently focused window.
38 registrar_.Add(this, chrome::NOTIFICATION_NO_KEY_WINDOW,
39 content::NotificationService::AllSources());
40 #endif
41 }
42
~WindowsEventRouter()43 WindowsEventRouter::~WindowsEventRouter() {
44 WindowControllerList::GetInstance()->RemoveObserver(this);
45 #if defined(TOOLKIT_VIEWS)
46 views::WidgetFocusManager::GetInstance()->RemoveFocusChangeListener(this);
47 #endif
48 }
49
OnWindowControllerAdded(WindowController * window_controller)50 void WindowsEventRouter::OnWindowControllerAdded(
51 WindowController* window_controller) {
52 if (!profile_->IsSameProfile(window_controller->profile()))
53 return;
54
55 scoped_ptr<base::ListValue> args(new base::ListValue());
56 base::DictionaryValue* window_dictionary =
57 window_controller->CreateWindowValue();
58 args->Append(window_dictionary);
59 DispatchEvent(windows::OnCreated::kEventName, window_controller->profile(),
60 args.Pass());
61 }
62
OnWindowControllerRemoved(WindowController * window_controller)63 void WindowsEventRouter::OnWindowControllerRemoved(
64 WindowController* window_controller) {
65 if (!profile_->IsSameProfile(window_controller->profile()))
66 return;
67
68 int window_id = window_controller->GetWindowId();
69 scoped_ptr<base::ListValue> args(new base::ListValue());
70 args->Append(new base::FundamentalValue(window_id));
71 DispatchEvent(windows::OnRemoved::kEventName,
72 window_controller->profile(),
73 args.Pass());
74 }
75
76 #if defined(TOOLKIT_VIEWS)
OnNativeFocusChange(gfx::NativeView focused_before,gfx::NativeView focused_now)77 void WindowsEventRouter::OnNativeFocusChange(
78 gfx::NativeView focused_before,
79 gfx::NativeView focused_now) {
80 if (!focused_now)
81 OnActiveWindowChanged(NULL);
82 }
83 #endif
84
Observe(int type,const content::NotificationSource & source,const content::NotificationDetails & details)85 void WindowsEventRouter::Observe(
86 int type,
87 const content::NotificationSource& source,
88 const content::NotificationDetails& details) {
89 #if defined(OS_MACOSX)
90 if (chrome::NOTIFICATION_NO_KEY_WINDOW == type) {
91 OnActiveWindowChanged(NULL);
92 return;
93 }
94 #endif
95 }
96
WillDispatchWindowFocusedEvent(BrowserContext * new_active_context,int window_id,BrowserContext * context,const Extension * extension,base::ListValue * event_args)97 static void WillDispatchWindowFocusedEvent(BrowserContext* new_active_context,
98 int window_id,
99 BrowserContext* context,
100 const Extension* extension,
101 base::ListValue* event_args) {
102 // When switching between windows in the default and incognito profiles,
103 // dispatch WINDOW_ID_NONE to extensions whose profile lost focus that
104 // can't see the new focused window across the incognito boundary.
105 // See crbug.com/46610.
106 if (new_active_context && new_active_context != context &&
107 !util::CanCrossIncognito(extension, context)) {
108 event_args->Clear();
109 event_args->Append(new base::FundamentalValue(
110 extension_misc::kUnknownWindowId));
111 } else {
112 event_args->Clear();
113 event_args->Append(new base::FundamentalValue(window_id));
114 }
115 }
116
OnActiveWindowChanged(WindowController * window_controller)117 void WindowsEventRouter::OnActiveWindowChanged(
118 WindowController* window_controller) {
119 Profile* window_profile = NULL;
120 int window_id = extension_misc::kUnknownWindowId;
121 if (window_controller &&
122 profile_->IsSameProfile(window_controller->profile())) {
123 window_profile = window_controller->profile();
124 window_id = window_controller->GetWindowId();
125 }
126
127 if (focused_window_id_ == window_id)
128 return;
129
130 // window_profile is either the default profile for the active window, its
131 // incognito profile, or NULL iff the previous profile is losing focus.
132 focused_profile_ = window_profile;
133 focused_window_id_ = window_id;
134
135 scoped_ptr<Event> event(new Event(windows::OnFocusChanged::kEventName,
136 make_scoped_ptr(new base::ListValue())));
137 event->will_dispatch_callback =
138 base::Bind(&WillDispatchWindowFocusedEvent,
139 static_cast<BrowserContext*>(window_profile),
140 window_id);
141 EventRouter::Get(profile_)->BroadcastEvent(event.Pass());
142 }
143
DispatchEvent(const std::string & event_name,Profile * profile,scoped_ptr<base::ListValue> args)144 void WindowsEventRouter::DispatchEvent(const std::string& event_name,
145 Profile* profile,
146 scoped_ptr<base::ListValue> args) {
147 scoped_ptr<Event> event(new Event(event_name, args.Pass()));
148 event->restrict_to_browser_context = profile;
149 EventRouter::Get(profile)->BroadcastEvent(event.Pass());
150 }
151
152 } // namespace extensions
153