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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/chrome_notification_types.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/extensions/extension_util.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/extensions/api/windows.h"
#include "chrome/common/extensions/extension_constants.h"
#include "content/public/browser/notification_service.h"
#include "extensions/browser/event_router.h"
#include "extensions/common/constants.h"
using content::BrowserContext;
namespace extensions {
namespace windows = extensions::api::windows;
WindowsEventRouter::WindowsEventRouter(Profile* profile)
: profile_(profile),
focused_profile_(NULL),
focused_window_id_(extension_misc::kUnknownWindowId) {
DCHECK(!profile->IsOffTheRecord());
WindowControllerList::GetInstance()->AddObserver(this);
// Needed for when no suitable window can be passed to an extension as the
// currently focused window. On Mac (even in a toolkit-views build) always
// rely on the notification sent by AppControllerMac after AppKit sends
// NSWindowDidBecomeKeyNotification and there is no [NSApp keyWindow]. This
// allows windows not created by toolkit-views to be tracked.
// TODO(tapted): Remove the ifdefs (and NOTIFICATION_NO_KEY_WINDOW) when
// Chrome on Mac only makes windows with toolkit-views.
#if defined(OS_MACOSX)
registrar_.Add(this, chrome::NOTIFICATION_NO_KEY_WINDOW,
content::NotificationService::AllSources());
#elif defined(TOOLKIT_VIEWS)
views::WidgetFocusManager::GetInstance()->AddFocusChangeListener(this);
#else
#error Unsupported
#endif
}
WindowsEventRouter::~WindowsEventRouter() {
WindowControllerList::GetInstance()->RemoveObserver(this);
#if !defined(OS_MACOSX)
views::WidgetFocusManager::GetInstance()->RemoveFocusChangeListener(this);
#endif
}
void WindowsEventRouter::OnWindowControllerAdded(
WindowController* window_controller) {
if (!profile_->IsSameProfile(window_controller->profile()))
return;
scoped_ptr<base::ListValue> args(new base::ListValue());
base::DictionaryValue* window_dictionary =
window_controller->CreateWindowValue();
args->Append(window_dictionary);
DispatchEvent(windows::OnCreated::kEventName, 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 base::ListValue());
args->Append(new base::FundamentalValue(window_id));
DispatchEvent(windows::OnRemoved::kEventName,
window_controller->profile(),
args.Pass());
}
#if !defined(OS_MACOSX)
void WindowsEventRouter::OnNativeFocusChange(
gfx::NativeView focused_before,
gfx::NativeView focused_now) {
if (!focused_now)
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 bool WillDispatchWindowFocusedEvent(BrowserContext* new_active_context,
int window_id,
BrowserContext* context,
const Extension* extension,
base::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_context && new_active_context != context &&
!util::CanCrossIncognito(extension, context)) {
event_args->Clear();
event_args->Append(new base::FundamentalValue(
extension_misc::kUnknownWindowId));
} else {
event_args->Clear();
event_args->Append(new base::FundamentalValue(window_id));
}
return true;
}
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(windows::OnFocusChanged::kEventName,
make_scoped_ptr(new base::ListValue())));
event->will_dispatch_callback =
base::Bind(&WillDispatchWindowFocusedEvent,
static_cast<BrowserContext*>(window_profile),
window_id);
EventRouter::Get(profile_)->BroadcastEvent(event.Pass());
}
void WindowsEventRouter::DispatchEvent(const std::string& event_name,
Profile* profile,
scoped_ptr<base::ListValue> args) {
scoped_ptr<Event> event(new Event(event_name, args.Pass()));
event->restrict_to_browser_context = profile;
EventRouter::Get(profile)->BroadcastEvent(event.Pass());
}
} // namespace extensions
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