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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_EXO_DATA_EXCHANGE_DELEGATE_H_
#define COMPONENTS_EXO_DATA_EXCHANGE_DELEGATE_H_
#include <string>
#include <vector>
#include "base/callback.h"
#include "base/memory/scoped_refptr.h"
namespace aura {
class Window;
}
namespace base {
class Pickle;
class RefCountedMemory;
} // namespace base
namespace ui {
class DataTransferEndpoint;
struct FileInfo;
enum class EndpointType;
} // namespace ui
namespace exo {
// Interface for data exchange operations that are implemented in chrome such as
// file drag and drop path translations and file sharing for VMs.
class DataExchangeDelegate {
public:
virtual ~DataExchangeDelegate() {}
// Returns the endpoint type of `window`.
virtual ui::EndpointType GetDataTransferEndpointType(
aura::Window* window) const = 0;
// Read filenames from text/uri-list |data| which was provided by |source|
// endpoint. Translates paths from source to host format.
virtual std::vector<ui::FileInfo> GetFilenames(
ui::EndpointType source,
const std::vector<uint8_t>& data) const = 0;
// Returns the mime type which is used by |target| endpoint for a list of
// file path URIs.
virtual std::string GetMimeTypeForUriList(ui::EndpointType target) const = 0;
// Sends the given list of |files| to |target| endpoint. Translates paths from
// host format to the target and performs any required file sharing for VMs.
using SendDataCallback =
base::OnceCallback<void(scoped_refptr<base::RefCountedMemory>)>;
virtual void SendFileInfo(ui::EndpointType target,
const std::vector<ui::FileInfo>& files,
SendDataCallback callback) const = 0;
// Takes in |pickle| constructed by the web contents view and returns true if
// it contains any valid filesystem URLs.
virtual bool HasUrlsInPickle(const base::Pickle& pickle) const = 0;
// Takes in |pickle| constructed by the web contents view containing
// filesystem URLs. Provides translations for the specified |target| endpoint
// and performs any required file sharing for VMs.
virtual void SendPickle(ui::EndpointType target,
const base::Pickle& pickle,
SendDataCallback callback) = 0;
// Reads pickle for FilesApp fs/sources with newline-separated filesystem
// URLs. Validates that |source| is FilesApp.
virtual std::vector<ui::FileInfo> ParseFileSystemSources(
const ui::DataTransferEndpoint* source,
const base::Pickle& pickle) const = 0;
};
} // namespace exo
#endif // COMPONENTS_EXO_DATA_EXCHANGE_DELEGATE_H_
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