| [email protected] | 63d1f9b | 2014-07-05 19:09:03 | [diff] [blame^] | 1 | // Copyright 2014 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/ui/zoom/zoom_event_manager.h" |
| 6 | |
| 7 | #include "content/public/browser/browser_context.h" |
| 8 | |
| 9 | namespace { |
| 10 | static const char kBrowserZoomEventManager[] = "browser_zoom_event_manager"; |
| 11 | } |
| 12 | |
| 13 | ZoomEventManager* ZoomEventManager::GetForBrowserContext( |
| 14 | content::BrowserContext* context) { |
| 15 | if (!context->GetUserData(kBrowserZoomEventManager)) |
| 16 | context->SetUserData(kBrowserZoomEventManager, new ZoomEventManager); |
| 17 | return static_cast<ZoomEventManager*>( |
| 18 | context->GetUserData(kBrowserZoomEventManager)); |
| 19 | } |
| 20 | |
| 21 | ZoomEventManager::ZoomEventManager() {} |
| 22 | |
| 23 | ZoomEventManager::~ZoomEventManager() {} |
| 24 | |
| 25 | void ZoomEventManager::OnZoomLevelChanged( |
| 26 | const content::HostZoomMap::ZoomLevelChange& change) { |
| 27 | zoom_level_changed_callbacks_.Notify(change); |
| 28 | } |
| 29 | |
| 30 | scoped_ptr<content::HostZoomMap::Subscription> |
| 31 | ZoomEventManager::AddZoomLevelChangedCallback( |
| 32 | const content::HostZoomMap::ZoomLevelChangedCallback& callback) { |
| 33 | return zoom_level_changed_callbacks_.Add(callback); |
| 34 | } |
