third_party/WebKit/Source/modules/exported/WebDOMFileSystem.cpp

/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#include "public/web/WebDOMFileSystem.h"

#include "bindings/modules/v8/V8DOMFileSystem.h"
#include "bindings/modules/v8/V8DirectoryEntry.h"
#include "bindings/modules/v8/V8FileEntry.h"
#include "core/frame/LocalFrame.h"
#include "core/frame/WebLocalFrameImpl.h"
#include "modules/filesystem/DOMFileSystem.h"
#include "modules/filesystem/DirectoryEntry.h"
#include "modules/filesystem/FileEntry.h"
#include "platform/bindings/WrapperTypeInfo.h"
#include "v8/include/v8.h"

namespace blink {

WebDOMFileSystem WebDOMFileSystem::FromV8Value(v8::Local<v8::Value> value) {
  if (!V8DOMFileSystem::hasInstance(value, v8::Isolate::GetCurrent()))
    return WebDOMFileSystem();
  v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(value);
  DOMFileSystem* dom_file_system = V8DOMFileSystem::ToImpl(object);
  DCHECK(dom_file_system);
  return WebDOMFileSystem(dom_file_system);
}

WebURL WebDOMFileSystem::CreateFileSystemURL(v8::Local<v8::Value> value) {
  const Entry* const entry =
      V8Entry::ToImplWithTypeCheck(v8::Isolate::GetCurrent(), value);
  if (entry)
    return entry->filesystem()->CreateFileSystemURL(entry);
  return WebURL();
}

WebDOMFileSystem WebDOMFileSystem::Create(WebLocalFrame* frame,
                                          WebFileSystemType type,
                                          const WebString& name,
                                          const WebURL& root_url,
                                          SerializableType serializable_type) {
  DCHECK(frame);
  DCHECK(ToWebLocalFrameImpl(frame)->GetFrame());
  DOMFileSystem* dom_file_system = DOMFileSystem::Create(
      ToWebLocalFrameImpl(frame)->GetFrame()->GetDocument(), name,
      static_cast<FileSystemType>(type), root_url);
  if (serializable_type == kSerializableTypeSerializable)
    dom_file_system->MakeClonable();
  return WebDOMFileSystem(dom_file_system);
}

void WebDOMFileSystem::Reset() {
  private_.Reset();
}

void WebDOMFileSystem::Assign(const WebDOMFileSystem& other) {
  private_ = other.private_;
}

WebString WebDOMFileSystem::GetName() const {
  DCHECK(private_.Get());
  return private_->name();
}

WebFileSystem::Type WebDOMFileSystem::GetType() const {
  DCHECK(private_.Get());
  switch (private_->GetType()) {
    case kFileSystemTypeTemporary:
      return WebFileSystem::kTypeTemporary;
    case kFileSystemTypePersistent:
      return WebFileSystem::kTypePersistent;
    case kFileSystemTypeIsolated:
      return WebFileSystem::kTypeIsolated;
    case kFileSystemTypeExternal:
      return WebFileSystem::kTypeExternal;
    default:
      NOTREACHED();
      return WebFileSystem::kTypeTemporary;
  }
}

WebURL WebDOMFileSystem::RootURL() const {
  DCHECK(private_.Get());
  return private_->RootURL();
}

v8::Local<v8::Value> WebDOMFileSystem::ToV8Value(
    v8::Local<v8::Object> creation_context,
    v8::Isolate* isolate) {
  // We no longer use |creationContext| because it's often misused and points
  // to a context faked by user script.
  DCHECK(creation_context->CreationContext() == isolate->GetCurrentContext());
  if (!private_.Get())
    return v8::Local<v8::Value>();
  return ToV8(private_.Get(), isolate->GetCurrentContext()->Global(), isolate);
}

v8::Local<v8::Value> WebDOMFileSystem::CreateV8Entry(
    const WebString& path,
    EntryType entry_type,
    v8::Local<v8::Object> creation_context,
    v8::Isolate* isolate) {
  // We no longer use |creationContext| because it's often misused and points
  // to a context faked by user script.
  DCHECK(creation_context->CreationContext() == isolate->GetCurrentContext());
  if (!private_.Get())
    return v8::Local<v8::Value>();
  if (entry_type == kEntryTypeDirectory) {
    return ToV8(DirectoryEntry::Create(private_.Get(), path),
                isolate->GetCurrentContext()->Global(), isolate);
  }
  DCHECK_EQ(entry_type, kEntryTypeFile);
  return ToV8(FileEntry::Create(private_.Get(), path),
              isolate->GetCurrentContext()->Global(), isolate);
}

WebDOMFileSystem::WebDOMFileSystem(DOMFileSystem* dom_file_system)
    : private_(dom_file_system) {}

WebDOMFileSystem& WebDOMFileSystem::operator=(DOMFileSystem* dom_file_system) {
  private_ = dom_file_system;
  return *this;
}

}  // namespace blink