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// Copyright (c) 2012 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/extensions/api/tabs/windows_event_router.h"
#include "base/values.h"
#include "chrome/browser/extensions/event_names.h"
#include "chrome/browser/extensions/event_router.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/extensions/extension_system.h"
#include "chrome/browser/extensions/window_controller.h"
#include "chrome/browser/extensions/window_controller_list.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/chrome_notification_types.h"
#include "chrome/common/extensions/extension_constants.h"
#include "content/public/browser/notification_service.h"
#if defined(TOOLKIT_GTK)
#include "ui/base/x/active_window_watcher_x.h"
#endif
namespace event_names = extensions::event_names;
namespace extensions {
WindowsEventRouter::WindowsEventRouter(Profile* profile)
: profile_(profile),
focused_profile_(NULL),
focused_window_id_(extension_misc::kUnknownWindowId) {
DCHECK(!profile->IsOffTheRecord());
WindowControllerList::GetInstance()->AddObserver(this);
#if defined(TOOLKIT_VIEWS)
views::WidgetFocusManager::GetInstance()->AddFocusChangeListener(this);
#elif defined(TOOLKIT_GTK)
ui::ActiveWindowWatcherX::AddObserver(this);
#elif defined(OS_MACOSX)
// Needed for when no suitable window can be passed to an extension as the
// currently focused window.
registrar_.Add(this, chrome::NOTIFICATION_NO_KEY_WINDOW,
content::NotificationService::AllSources());
#endif
}
WindowsEventRouter::~WindowsEventRouter() {
WindowControllerList::GetInstance()->RemoveObserver(this);
#if defined(TOOLKIT_VIEWS)
views::WidgetFocusManager::GetInstance()->RemoveFocusChangeListener(this);
#elif defined(TOOLKIT_GTK)
ui::ActiveWindowWatcherX::RemoveObserver(this);
#endif
}
void WindowsEventRouter::OnWindowControllerAdded(
WindowController* window_controller) {
if (!profile_->IsSameProfile(window_controller->profile()))
return;
scoped_ptr<base::ListValue> args(new ListValue());
DictionaryValue* window_dictionary = window_controller->CreateWindowValue();
args->Append(window_dictionary);
DispatchEvent(event_names::kOnWindowCreated, window_controller->profile(),
args.Pass());
}
void WindowsEventRouter::OnWindowControllerRemoved(
WindowController* window_controller) {
if (!profile_->IsSameProfile(window_controller->profile()))
return;
int window_id = window_controller->GetWindowId();
scoped_ptr<base::ListValue> args(new ListValue());
args->Append(Value::CreateIntegerValue(window_id));
DispatchEvent(event_names::kOnWindowRemoved, window_controller->profile(),
args.Pass());
}
#if defined(TOOLKIT_VIEWS)
void WindowsEventRouter::OnNativeFocusChange(
gfx::NativeView focused_before,
gfx::NativeView focused_now) {
if (!focused_now)
OnActiveWindowChanged(NULL);
}
#elif defined(TOOLKIT_GTK)
void WindowsEventRouter::ActiveWindowChanged(
GdkWindow* active_window) {
if (!active_window)
OnActiveWindowChanged(NULL);
}
#endif
void WindowsEventRouter::Observe(
int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
#if defined(OS_MACOSX)
if (chrome::NOTIFICATION_NO_KEY_WINDOW == type) {
OnActiveWindowChanged(NULL);
return;
}
#endif
}
static void WillDispatchWindowFocusedEvent(Profile* new_active_profile,
int window_id,
Profile* profile,
const Extension* extension,
ListValue* event_args) {
// When switching between windows in the default and incognito profiles,
// dispatch WINDOW_ID_NONE to extensions whose profile lost focus that
// can't see the new focused window across the incognito boundary.
// See crbug.com/46610.
if (new_active_profile && new_active_profile != profile &&
!extensions::ExtensionSystem::Get(profile)->extension_service()->
CanCrossIncognito(extension)) {
event_args->Clear();
event_args->Append(Value::CreateIntegerValue(
extension_misc::kUnknownWindowId));
} else {
event_args->Clear();
event_args->Append(Value::CreateIntegerValue(window_id));
}
}
void WindowsEventRouter::OnActiveWindowChanged(
WindowController* window_controller) {
Profile* window_profile = NULL;
int window_id = extension_misc::kUnknownWindowId;
if (window_controller &&
profile_->IsSameProfile(window_controller->profile())) {
window_profile = window_controller->profile();
window_id = window_controller->GetWindowId();
}
if (focused_window_id_ == window_id)
return;
// window_profile is either the default profile for the active window, its
// incognito profile, or NULL iff the previous profile is losing focus.
focused_profile_ = window_profile;
focused_window_id_ = window_id;
scoped_ptr<Event> event(new Event(event_names::kOnWindowFocusedChanged,
make_scoped_ptr(new ListValue())));
event->will_dispatch_callback =
base::Bind(&WillDispatchWindowFocusedEvent, window_profile, window_id);
ExtensionSystem::Get(profile_)->event_router()->BroadcastEvent(event.Pass());
}
void WindowsEventRouter::DispatchEvent(const char* event_name,
Profile* profile,
scoped_ptr<base::ListValue> args) {
scoped_ptr<Event> event(new Event(event_name, args.Pass()));
event->restrict_to_profile = profile;
ExtensionSystem::Get(profile)->event_router()->BroadcastEvent(event.Pass());
}
} // namespace extensions
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