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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 "base/mac/mac_util.h"
#include "chrome/browser/ui/panels/display_settings_provider.h"
#include "ui/base/work_area_watcher_observer.h"
#import "chrome/browser/app_controller_mac.h"
#include "chrome/common/chrome_notification_types.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_source.h"
namespace {
class DisplaySettingsProviderCocoa : public DisplaySettingsProvider,
public ui::WorkAreaWatcherObserver,
public content::NotificationObserver {
public:
DisplaySettingsProviderCocoa();
virtual ~DisplaySettingsProviderCocoa();
protected:
// Overridden from DisplaySettingsProvider:
virtual bool NeedsPeriodicFullScreenCheck() const OVERRIDE;
virtual bool IsFullScreen() const OVERRIDE;
// Overridden from ui::WorkAreaWatcherObserver:
virtual void WorkAreaChanged() OVERRIDE;
// Overridden from content::NotificationObserver:
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
private:
content::NotificationRegistrar registrar_;
bool is_chrome_fullscreen_;
DISALLOW_COPY_AND_ASSIGN(DisplaySettingsProviderCocoa);
};
DisplaySettingsProviderCocoa::DisplaySettingsProviderCocoa()
// Ideally we should initialize the value below with current state. However,
// there is not a centralized place we can pull the state from and we need
// to query all chrome browser windows to find it out.
// This will get automatically fixed when DisplaySettingsProvider is changed
// to be initialized before any chrome window is created with planning
// refactor effort to move it out of panel scope.
: is_chrome_fullscreen_(false) {
AppController* appController = static_cast<AppController*>([NSApp delegate]);
[appController addObserverForWorkAreaChange:this];
registrar_.Add(
this,
chrome::NOTIFICATION_FULLSCREEN_CHANGED,
content::NotificationService::AllSources());
}
DisplaySettingsProviderCocoa::~DisplaySettingsProviderCocoa() {
AppController* appController = static_cast<AppController*>([NSApp delegate]);
[appController removeObserverForWorkAreaChange:this];
}
bool DisplaySettingsProviderCocoa::NeedsPeriodicFullScreenCheck() const {
// Lion system introduces fullscreen support. When a window of an application
// enters fullscreen mode, the system will automatically hide all other
// windows, even including topmost windows that come from other applications.
// So we don't need to do anything when any other application enters
// fullscreen mode. We still need to handle the case when chrome enters
// fullscreen mode and our topmost windows will not get hided by the system.
return !base::mac::IsOSLionOrLater();
}
bool DisplaySettingsProviderCocoa::IsFullScreen() const {
// For Lion and later, we only need to check if chrome enters fullscreen mode
// (see detailed reason above in NeedsPeriodicFullScreenCheck).
return base::mac::IsOSLionOrLater() ? is_chrome_fullscreen_ :
DisplaySettingsProvider::IsFullScreen();
}
void DisplaySettingsProviderCocoa::WorkAreaChanged() {
OnDisplaySettingsChanged();
}
void DisplaySettingsProviderCocoa::Observe(
int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
DCHECK_EQ(chrome::NOTIFICATION_FULLSCREEN_CHANGED, type);
is_chrome_fullscreen_ = *(content::Details<bool>(details)).ptr();
CheckFullScreenMode();
}
} // namespace
// static
DisplaySettingsProvider* DisplaySettingsProvider::Create() {
return new DisplaySettingsProviderCocoa();
}
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