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      1 /*
      2  * Copyright (C) 2010 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef DirectoryReader_h
     32 #define DirectoryReader_h
     33 
     34 #include "bindings/v8/ScriptWrappable.h"
     35 #include "modules/filesystem/DOMFileSystem.h"
     36 #include "modules/filesystem/DirectoryReaderBase.h"
     37 #include "modules/filesystem/EntriesCallback.h"
     38 #include "platform/heap/Handle.h"
     39 #include "wtf/text/WTFString.h"
     40 
     41 namespace WebCore {
     42 
     43 class ErrorCallback;
     44 
     45 class DirectoryReader : public DirectoryReaderBase, public ScriptWrappable {
     46 public:
     47     static DirectoryReader* create(DOMFileSystemBase* fileSystem, const String& fullPath)
     48     {
     49         return new DirectoryReader(fileSystem, fullPath);
     50     }
     51 
     52     virtual ~DirectoryReader();
     53 
     54     void readEntries(PassOwnPtr<EntriesCallback>, PassOwnPtr<ErrorCallback> = nullptr);
     55 
     56     DOMFileSystem* filesystem() const { return static_cast<DOMFileSystem*>(m_fileSystem.get()); }
     57 
     58     virtual void trace(Visitor*) OVERRIDE;
     59 
     60 private:
     61     class EntriesCallbackHelper;
     62     class ErrorCallbackHelper;
     63 
     64     DirectoryReader(DOMFileSystemBase*, const String& fullPath);
     65 
     66     void addEntries(const EntryHeapVector& entries);
     67 
     68     void onError(FileError*);
     69 
     70     bool m_isReading;
     71     EntryHeapVector m_entries;
     72     RefPtrWillBeMember<FileError> m_error;
     73     OwnPtr<EntriesCallback> m_entriesCallback;
     74     OwnPtr<ErrorCallback> m_errorCallback;
     75 };
     76 
     77 }
     78 
     79 #endif // DirectoryReader_h
     80