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| 1 // Copyright (c) 2010 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/renderer/renderer_webstoragenamespace_impl.h" | |
| 6 | |
| 7 #include "chrome/common/render_messages.h" | |
| 8 #include "chrome/renderer/render_thread.h" | |
| 9 #include "chrome/renderer/renderer_webstoragearea_impl.h" | |
| 10 | |
| 11 using WebKit::WebStorageArea; | |
| 12 using WebKit::WebStorageNamespace; | |
| 13 using WebKit::WebString; | |
| 14 | |
| 15 RendererWebStorageNamespaceImpl::RendererWebStorageNamespaceImpl( | |
| 16 DOMStorageType storage_type) | |
| 17 : storage_type_(storage_type), | |
| 18 namespace_id_(kLocalStorageNamespaceId) { | |
| 19 DCHECK(storage_type == DOM_STORAGE_LOCAL); | |
| 20 } | |
| 21 | |
| 22 RendererWebStorageNamespaceImpl::RendererWebStorageNamespaceImpl( | |
| 23 DOMStorageType storage_type, int64 namespace_id) | |
| 24 : storage_type_(storage_type), | |
| 25 namespace_id_(namespace_id) { | |
| 26 DCHECK(storage_type == DOM_STORAGE_SESSION); | |
| 27 } | |
| 28 | |
| 29 RendererWebStorageNamespaceImpl::~RendererWebStorageNamespaceImpl() { | |
| 30 } | |
| 31 | |
| 32 WebStorageArea* RendererWebStorageNamespaceImpl::createStorageArea( | |
| 33 const WebString& origin) { | |
| 34 // Ideally, we'd keep a hash map of origin to these objects. Unfortunately | |
| 35 // this doesn't seem practical because there's no good way to ref-count these | |
| 36 // objects, and it'd be unclear who owned them. So, instead, we'll pay the | |
| 37 // price in terms of wasted memory. | |
| 38 return new RendererWebStorageAreaImpl(namespace_id_, origin); | |
| 39 } | |
| 40 | |
| 41 WebStorageNamespace* RendererWebStorageNamespaceImpl::copy() { | |
| 42 // By returning NULL, we're telling WebKit to lazily fetch it the next time | |
| 43 // session storage is used. In the WebViewClient::createView, we do the | |
| 44 // book-keeping necessary to make it a true copy-on-write despite not doing | |
| 45 // anything here, now. | |
| 46 return NULL; | |
| 47 } | |
| 48 | |
| 49 void RendererWebStorageNamespaceImpl::close() { | |
| 50 // This is called only on LocalStorage namespaces when WebKit thinks its | |
| 51 // shutting down. This has no impact on Chromium. | |
| 52 } | |
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