src/third_party/WebKit/Source/modules/filesystem/LocalFileSystem.cpp

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  11  * copyright notice, this list of conditions and the following disclaimer
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  29  */
  30
  31 #include "config.h"
  32 #include "modules/filesystem/LocalFileSystem.h"
  33
  34 #include "core/dom/CrossThreadTask.h"
  35 #include "core/dom/Document.h"
  36 #include "core/dom/ExceptionCode.h"
  37 #include "core/dom/ExecutionContext.h"
  38 #include "core/fileapi/FileError.h"
  39 #include "core/inspector/InspectorController.h"
  40 #include "core/workers/WorkerGlobalScope.h"
  41 #include "modules/filesystem/FileSystemClient.h"
  42 #include "modules/filesystem/InspectorFileSystemAgent.h"
  43 #include "platform/AsyncFileSystemCallbacks.h"
  44 #include "public/platform/Platform.h"
  45 #include "public/platform/WebFileSystem.h"
  46
  47 namespace WebCore {
  48
  49 namespace {
  50
  51 void fileSystemNotAllowed(ExecutionContext*, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
  52 {
  53     callbacks->didFail(FileError::ABORT_ERR);
  54 }
  55
  56 } // namespace
  57
  58 PassOwnPtr<LocalFileSystem> LocalFileSystem::create(PassOwnPtr<FileSystemClient> client)
  59 {
  60     return adoptPtr(new LocalFileSystem(client));
  61 }
  62
  63 LocalFileSystem::~LocalFileSystem()
  64 {
  65 }
  66
  67 void LocalFileSystem::resolveURL(ExecutionContext* context, const KURL& fileSystemURL, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
  68 {
  69     if (!client() || !client()->allowFileSystem(context)) {
  70         context->postTask(createCallbackTask(&fileSystemNotAllowed, callbacks));
  71         return;
  72     }
  73     blink::Platform::current()->fileSystem()->resolveURL(fileSystemURL, callbacks);
  74 }
  75
  76 void LocalFileSystem::requestFileSystem(ExecutionContext* context, FileSystemType type, long long size, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
  77 {
  78     if (!client() || !client()->allowFileSystem(context)) {
  79         context->postTask(createCallbackTask(&fileSystemNotAllowed, callbacks));
  80         return;
  81     }
  82     KURL storagePartition = KURL(KURL(), context->securityOrigin()->toString());
  83     blink::Platform::current()->fileSystem()->openFileSystem(storagePartition, static_cast<blink::WebFileSystemType>(type), callbacks);
  84 }
  85
  86 void LocalFileSystem::deleteFileSystem(ExecutionContext* context, FileSystemType type, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
  87 {
  88     ASSERT(context);
  89     ASSERT_WITH_SECURITY_IMPLICATION(context->isDocument());
  90
  91     if (!client() || !client()->allowFileSystem(context)) {
  92         context->postTask(createCallbackTask(&fileSystemNotAllowed, callbacks));
  93         return;
  94     }
  95     KURL storagePartition = KURL(KURL(), context->securityOrigin()->toString());
  96     blink::Platform::current()->fileSystem()->deleteFileSystem(storagePartition, static_cast<blink::WebFileSystemType>(type), callbacks);
  97 }
  98
  99 LocalFileSystem::LocalFileSystem(PassOwnPtr<FileSystemClient> client)
 100     : m_client(client)
 101 {
 102 }
 103
 104 const char* LocalFileSystem::supplementName()
 105 {
 106     return "LocalFileSystem";
 107 }
 108
 109 LocalFileSystem* LocalFileSystem::from(ExecutionContext* context)
 110 {
 111     if (context->isDocument()) {
 112         return static_cast<LocalFileSystem*>(Supplement<Page>::from(toDocument(context)->page(), supplementName()));
 113     }
 114     ASSERT(context->isWorkerGlobalScope());
 115     return static_cast<LocalFileSystem*>(Supplement<WorkerClients>::from(toWorkerGlobalScope(context)->clients(), supplementName()));
 116 }
 117
 118 void provideLocalFileSystemTo(Page* page, PassOwnPtr<FileSystemClient> client)
 119 {
 120     page->provideSupplement(LocalFileSystem::supplementName(), LocalFileSystem::create(client));
 121     page->inspectorController().registerModuleAgent(InspectorFileSystemAgent::create(page));
 122 }
 123
 124 void provideLocalFileSystemToWorker(WorkerClients* clients, PassOwnPtr<FileSystemClient> client)
 125 {
 126     clients->provideSupplement(LocalFileSystem::supplementName(), LocalFileSystem::create(client));
 127 }
 128
 129 } // namespace WebCore