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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef WEBKIT_PLUGINS_PPAPI_PPB_FILE_REF_IMPL_H_
#define WEBKIT_PLUGINS_PPAPI_PPB_FILE_REF_IMPL_H_
#include <string>
#include <vector>
#include "base/files/file_path.h"
#include "base/memory/linked_ptr.h"
#include "googleurl/src/gurl.h"
#include "ppapi/c/pp_file_info.h"
#include "ppapi/c/ppb_file_ref.h"
#include "ppapi/shared_impl/ppb_file_ref_shared.h"
#include "ppapi/shared_impl/scoped_pp_resource.h"
#include "ppapi/shared_impl/var.h"
#include "webkit/plugins/webkit_plugins_export.h"
namespace webkit {
namespace ppapi {
using ::ppapi::StringVar;
class PPB_FileSystem_Impl;
class WEBKIT_PLUGINS_EXPORT PPB_FileRef_Impl
: public ::ppapi::PPB_FileRef_Shared {
public:
PPB_FileRef_Impl(const ::ppapi::PPB_FileRef_CreateInfo& info,
PP_Resource file_system);
PPB_FileRef_Impl(const ::ppapi::PPB_FileRef_CreateInfo& info,
const base::FilePath& external_file_path);
virtual ~PPB_FileRef_Impl();
// The returned object will have a refcount of 0 (just like "new").
static PPB_FileRef_Impl* CreateInternal(PP_Instance instance,
PP_Resource pp_file_system,
const std::string& path);
// The returned object will have a refcount of 0 (just like "new").
static PPB_FileRef_Impl* CreateExternal(
PP_Instance instance,
const base::FilePath& external_file_path,
const std::string& display_name);
// PPB_FileRef_API implementation (not provided by PPB_FileRef_Shared).
virtual PP_Resource GetParent() OVERRIDE;
virtual int32_t MakeDirectory(
PP_Bool make_ancestors,
scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
virtual int32_t Touch(
PP_Time last_access_time,
PP_Time last_modified_time,
scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
virtual int32_t Delete(
scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
virtual int32_t Rename(
PP_Resource new_file_ref,
scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
virtual int32_t Query(
PP_FileInfo* info,
scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
virtual int32_t ReadDirectoryEntries(
const PP_ArrayOutput& output,
scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
virtual int32_t QueryInHost(
linked_ptr<PP_FileInfo> info,
scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
virtual int32_t ReadDirectoryEntriesInHost(
linked_ptr<std::vector< ::ppapi::PPB_FileRef_CreateInfo> > files,
linked_ptr<std::vector<PP_FileType> > file_types,
scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
virtual PP_Var GetAbsolutePath();
PP_Resource file_system_resource() const { return file_system_; }
// Returns the system path corresponding to this file. Valid only for
// external filesystems.
base::FilePath GetSystemPath() const;
// Returns the FileSystem API URL corresponding to this file.
GURL GetFileSystemURL() const;
// Checks if file ref has file system instance and if the instance is opened.
bool HasValidFileSystem() const;
void AddFileSystemRefCount() {
file_system_ref_ = file_system_;
}
private:
// Many mutation functions are allow only to non-external filesystems, This
// function returns true if the filesystem is opened and isn't external as an
// access check for these functions.
bool IsValidNonExternalFileSystem() const;
// 0 for external filesystems. This is a plugin side resource that we don't
// hold a reference here, so file_system_ could be destroyed earlier than
// this object. Right now we checked the existance in plugin delegate before
// use. But it's better to hold a reference once we migrate FileRef to the
// new design.
PP_Resource file_system_;
// Holds a reference of FileSystem when running in process. See
// PPB_FileRef_Proxy for corresponding code for out-of-process mode. Note
// that this ScopedPPResource is only expected to be used when running in
// process (since PPB_FileRef_Proxy takes care of out-of-process case).
// Also note that this workaround will be no longer needed after FileRef
// refactoring.
::ppapi::ScopedPPResource file_system_ref_;
// Used only for external filesystems.
base::FilePath external_file_system_path_;
// Lazily initialized var created from the external path. This is so we can
// return the identical string object every time it is requested.
scoped_refptr<StringVar> external_path_var_;
DISALLOW_COPY_AND_ASSIGN(PPB_FileRef_Impl);
};
} // namespace ppapi
} // namespace webkit
#endif // WEBKIT_PLUGINS_PPAPI_PPB_FILE_REF_IMPL_H_
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