1 files changed, 39 insertions, 0 deletions
diff --git a/WebCore/html/Blob.h b/WebCore/html/Blob.h
index b910e8f..e8b5f3f 100644
--- a/WebCore/html/Blob.h
+++ b/WebCore/html/Blob.h
@@ -33,6 +33,7 @@
 
 #include "ExceptionCode.h"
 #include "PlatformString.h"
+#include <time.h>
 #include <wtf/PassRefPtr.h>
 #include <wtf/RefCounted.h>
 
@@ -40,6 +41,11 @@ namespace WebCore {
 
 class Blob : public RefCounted<Blob> {
 public:
+#if ENABLE(BLOB_SLICE)
+    static const int toEndOfFile;
+    static const double doNotCheckFileChange;
+#endif
+
     static PassRefPtr<Blob> create(const String& path)
     {
         return adoptRef(new Blob(path));
@@ -47,14 +53,47 @@ public:
 
     virtual ~Blob() { }
 
+    virtual bool isFile() const { return false; }
+
+#if ENABLE(BLOB_SLICE)
+    PassRefPtr<Blob> slice(long long start, long long length) const;
+#endif
+
     const String& path() const { return m_path; }
     unsigned long long size() const;
+#if ENABLE(BLOB_SLICE)
+    long long start() const { return m_start; }
+    long long length() const { return m_length; }
+    double modificationTime() const { return m_snapshotModificationTime; }
+#endif
 
 protected:
     Blob(const String& path);
 
 private:
+#if ENABLE(BLOB_SLICE)
+    Blob(const String& path, long long start, long long length, long long snapshotSize, double snapshotModificationTime);
+#endif
+
+    // The underlying path of the file-based blob. 
     String m_path;
+
+#if ENABLE(BLOB_SLICE)
+    // The starting position of the file-based blob.
+    long long m_start;
+
+    // The length of the file-based blob. The value of -1 means to the end of the file.
+    long long m_length;
+
+    // A flag to tell if a snapshot has been captured.
+    bool m_snapshotCaptured;
+
+    // The size of the file when a snapshot is captured. It can be 0 if the file is empty.
+    long long m_snapshotSize;
+
+    // The last modification time of the file when a snapshot is captured. The value of 0 also means that the snapshot is not captured.
+    double m_snapshotModificationTime;
+#endif
 };
 
 } // namespace WebCore