third_party/WebKit/Source/web/WebBlob.cpp

   1 /*
   2  * Copyright (C) 2011 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 #include "config.h"
  32 #include "public/web/WebBlob.h"
  33
  34 #include "bindings/core/v8/V8Binding.h"
  35 #include "bindings/core/v8/V8Blob.h"
  36 #include "core/fileapi/Blob.h"
  37 #include "platform/blob/BlobData.h"
  38 #include "wtf/PassOwnPtr.h"
  39
  40 namespace blink {
  41
  42 WebBlob WebBlob::createFromUUID(const WebString& uuid, const WebString& type, long long size)
  43 {
  44     return Blob::create(BlobDataHandle::create(uuid, type, size));
  45 }
  46
  47 WebBlob WebBlob::createFromFile(const WebString& path, long long size)
  48 {
  49     OwnPtr<BlobData> blobData = BlobData::create();
  50     blobData->appendFile(path);
  51     return Blob::create(BlobDataHandle::create(blobData.release(), size));
  52 }
  53
  54 WebBlob WebBlob::fromV8Value(v8::Local<v8::Value> value)
  55 {
  56     if (V8Blob::hasInstance(value, v8::Isolate::GetCurrent())) {
  57         v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(value);
  58         Blob* blob = V8Blob::toImpl(object);
  59         ASSERT(blob);
  60         return blob;
  61     }
  62     return WebBlob();
  63 }
  64
  65 void WebBlob::reset()
  66 {
  67     m_private.reset();
  68 }
  69
  70 void WebBlob::assign(const WebBlob& other)
  71 {
  72     m_private = other.m_private;
  73 }
  74
  75 WebString WebBlob::uuid()
  76 {
  77     if (!m_private.get())
  78         return WebString();
  79     return m_private->uuid();
  80 }
  81
  82 v8::Local<v8::Value> WebBlob::toV8Value(v8::Local<v8::Object> creationContext, v8::Isolate* isolate)
  83 {
  84     // We no longer use |creationContext| because it's often misused and points
  85     // to a context faked by user script.
  86     ASSERT(creationContext->CreationContext() == isolate->GetCurrentContext());
  87     if (!m_private.get())
  88         return v8::Local<v8::Value>();
  89     return toV8(m_private.get(), isolate->GetCurrentContext()->Global(), isolate);
  90 }
  91
  92 WebBlob::WebBlob(Blob* blob)
  93     : m_private(blob)
  94 {
  95 }
  96
  97 WebBlob& WebBlob::operator=(Blob* blob)
  98 {
  99     m_private = blob;
 100     return *this;
 101 }
 102
 103 } // namespace blink