Source/WebCore/fileapi/DOMFileSystem.cpp

   1 /*
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   9  * notice, this list of conditions and the following disclaimer.
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  11  * copyright notice, this list of conditions and the following disclaimer
  12  * in the documentation and/or other materials provided with the
  13  * distribution.
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  30
  31 #include "config.h"
  32 #include "DOMFileSystem.h"
  33
  34 #if ENABLE(FILE_SYSTEM)
  35
  36 #include "AsyncFileSystem.h"
  37 #include "DOMFilePath.h"
  38 #include "DirectoryEntry.h"
  39 #include "ErrorCallback.h"
  40 #include "File.h"
  41 #include "FileCallback.h"
  42 #include "FileEntry.h"
  43 #include "FileMetadata.h"
  44 #include "FileSystemCallbacks.h"
  45 #include "FileWriter.h"
  46 #include "FileWriterBaseCallback.h"
  47 #include "FileWriterCallback.h"
  48 #include "InspectorFileSystemInstrumentation.h"
  49 #include "MetadataCallback.h"
  50 #include "ScriptExecutionContext.h"
  51 #include <wtf/OwnPtr.h>
  52
  53 namespace WebCore {
  54
  55 // static
  56 PassRefPtr<DOMFileSystem> DOMFileSystem::create(ScriptExecutionContext* context, const String& name, PassOwnPtr<AsyncFileSystem> asyncFileSystem)
  57 {
  58     RefPtr<DOMFileSystem> fileSystem(adoptRef(new DOMFileSystem(context, name, asyncFileSystem)));
  59     InspectorInstrumentation::didOpenFileSystem(fileSystem.get());
  60     return fileSystem;
  61 }
  62
  63 DOMFileSystem::DOMFileSystem(ScriptExecutionContext* context, const String& name, PassOwnPtr<AsyncFileSystem> asyncFileSystem)
  64     : DOMFileSystemBase(context, name, asyncFileSystem)
  65     , ActiveDOMObject(context, this)
  66 {
  67 }
  68
  69 PassRefPtr<DirectoryEntry> DOMFileSystem::root()
  70 {
  71     return DirectoryEntry::create(this, DOMFilePath::root);
  72 }
  73
  74 void DOMFileSystem::stop()
  75 {
  76     m_asyncFileSystem->stop();
  77 }
  78
  79 bool DOMFileSystem::hasPendingActivity() const
  80 {
  81     return m_asyncFileSystem->hasPendingActivity();
  82 }
  83
  84 void DOMFileSystem::contextDestroyed()
  85 {
  86     m_asyncFileSystem->stop();
  87     ActiveDOMObject::contextDestroyed();
  88 }
  89
  90 namespace {
  91
  92 class ConvertToFileWriterCallback : public FileWriterBaseCallback {
  93 public:
  94     static PassRefPtr<ConvertToFileWriterCallback> create(PassRefPtr<FileWriterCallback> callback)
  95     {
  96         return adoptRef(new ConvertToFileWriterCallback(callback));
  97     }
  98
  99     bool handleEvent(FileWriterBase* fileWriterBase)
 100     {
 101         return m_callback->handleEvent(static_cast<FileWriter*>(fileWriterBase));
 102     }
 103 private:
 104     ConvertToFileWriterCallback(PassRefPtr<FileWriterCallback> callback)
 105         : m_callback(callback)
 106     {
 107     }
 108     RefPtr<FileWriterCallback> m_callback;
 109 };
 110
 111 }
 112
 113 void DOMFileSystem::createWriter(const FileEntry* fileEntry, PassRefPtr<FileWriterCallback> successCallback, PassRefPtr<ErrorCallback> errorCallback)
 114 {
 115     ASSERT(fileEntry);
 116
 117     RefPtr<FileWriter> fileWriter = FileWriter::create(scriptExecutionContext());
 118     RefPtr<FileWriterBaseCallback> conversionCallback = ConvertToFileWriterCallback::create(successCallback);
 119     OwnPtr<FileWriterBaseCallbacks> callbacks = FileWriterBaseCallbacks::create(fileWriter, conversionCallback, errorCallback);
 120     m_asyncFileSystem->createWriter(fileWriter.get(), fileEntry->fullPath(), callbacks.release());
 121 }
 122
 123 namespace {
 124
 125 class GetPathCallback : public FileSystemCallbacksBase {
 126 public:
 127     static PassOwnPtr<GetPathCallback> create(PassRefPtr<DOMFileSystem> filesystem, const String& name, PassRefPtr<FileCallback> successCallback, PassRefPtr<ErrorCallback> errorCallback)
 128     {
 129         return adoptPtr(new GetPathCallback(filesystem, name, successCallback, errorCallback));
 130     }
 131
 132     virtual void didReadMetadata(const FileMetadata& metadata)
 133     {
 134         ASSERT(!metadata.platformPath.isEmpty());
 135         m_filesystem->scheduleCallback(m_successCallback.release(), File::createWithName(metadata.platformPath, m_name));
 136     }
 137
 138 private:
 139     GetPathCallback(PassRefPtr<DOMFileSystem> filesystem, const String& name,  PassRefPtr<FileCallback> successCallback, PassRefPtr<ErrorCallback> errorCallback)
 140         : FileSystemCallbacksBase(errorCallback)
 141         , m_filesystem(filesystem)
 142         , m_name(name)
 143         , m_successCallback(successCallback)
 144     {
 145     }
 146
 147     RefPtr<DOMFileSystem> m_filesystem;
 148     String m_name;
 149     RefPtr<FileCallback> m_successCallback;
 150 };
 151
 152 } // namespace
 153
 154 void DOMFileSystem::createFile(const FileEntry* fileEntry, PassRefPtr<FileCallback> successCallback, PassRefPtr<ErrorCallback> errorCallback)
 155 {
 156     m_asyncFileSystem->readMetadata(fileEntry->fullPath(), GetPathCallback::create(this, fileEntry->name(), successCallback, errorCallback));
 157 }
 158
 159 } // namespace WebCore
 160
 161 #endif // ENABLE(FILE_SYSTEM)