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// Copyright 2014 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 CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_SYSTEM_PROVIDER_PROVIDER_FUNCTION_H_
#define CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_SYSTEM_PROVIDER_PROVIDER_FUNCTION_H_
#include <string>
#include "base/files/file.h"
#include "base/memory/scoped_ptr.h"
#include "chrome/browser/extensions/chrome_extension_function.h"
#include "chrome/common/extensions/api/file_system_provider.h"
namespace base {
class DictionaryValue;
} // namespace base
namespace chromeos {
namespace file_system_provider {
class RequestManager;
class RequestValue;
} // namespace file_system_provider
} // namespace chromeos
namespace extensions {
// Error names from
// http://www.w3.org/TR/file-system-api/#errors-and-exceptions
extern const char kNotFoundErrorName[];
extern const char kSecurityErrorName[];
// Error messages.
extern const char kEmptyNameErrorMessage[];
extern const char kEmptyIdErrorMessage[];
extern const char kMountFailedErrorMessage[];
extern const char kUnmountFailedErrorMessage[];
extern const char kResponseFailedErrorMessage[];
// Creates a dictionary, which looks like a DOMError. The returned dictionary
// will be converted to a real DOMError object in
// file_system_provier_custom_bindings.js.
base::DictionaryValue* CreateError(const std::string& name,
const std::string& message);
// Converts ProviderError to base::File::Error. This could be redundant, if it
// was possible to create DOMError instances in Javascript easily.
base::File::Error ProviderErrorToFileError(
api::file_system_provider::ProviderError error);
// Base class for internal API functions handling request results, either
// a success or a failure.
class FileSystemProviderInternalFunction : public ChromeSyncExtensionFunction {
public:
FileSystemProviderInternalFunction();
protected:
virtual ~FileSystemProviderInternalFunction() {}
// Rejects the request and sets a response for this API function.
void RejectRequest(base::File::Error error);
// Fulfills the request with parsed arguments of this API function
// encapsulated as a RequestValue instance. Also, sets a response.
// If |has_more| is set to true, then the function will be called again for
// this request.
void FulfillRequest(
scoped_ptr<chromeos::file_system_provider::RequestValue> value,
bool has_more);
// Subclasses implement this for their functionality.
// Called after Parse() is successful, such that |request_id_| and
// |request_manager_| have been fully initialized.
virtual bool RunWhenValid() = 0;
// ChromeSyncExtensionFunction overrides.
virtual bool RunSync() OVERRIDE;
private:
// Parses the request in order to extract the request manager. If fails, then
// sets a response and returns false.
bool Parse();
// Sets an error message in case of a failure.
void SetErrorResponse(const std::string& name, const std::string& message);
int request_id_;
chromeos::file_system_provider::RequestManager* request_manager_;
};
} // namespace extensions
#endif // CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_SYSTEM_PROVIDER_PROVIDER_FUNCTION_H_
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