chromium/ui/base/clipboard/clipboard_ozone.cc

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "ui/base/clipboard/clipboard_ozone.h"

#include <algorithm>
#include <limits>
#include <optional>
#include <string_view>
#include <utility>
#include <vector>

#include "base/check.h"
#include "base/containers/contains.h"
#include "base/containers/flat_map.h"
#include "base/containers/map_util.h"
#include "base/containers/span.h"
#include "base/functional/bind.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/no_destructor.h"
#include "base/notreached.h"
#include "base/run_loop.h"
#include "base/strings/strcat.h"
#include "base/strings/utf_string_conversions.h"
#include "base/timer/timer.h"
#include "base/types/optional_util.h"
#include "base/types/variant_util.h"
#include "build/build_config.h"
#include "clipboard_util.h"
#include "third_party/abseil-cpp/absl/types/variant.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/base/clipboard/clipboard_buffer.h"
#include "ui/base/clipboard/clipboard_constants.h"
#include "ui/base/clipboard/clipboard_metrics.h"
#include "ui/base/clipboard/clipboard_monitor.h"
#include "ui/base/clipboard/clipboard_util.h"
#include "ui/base/clipboard/custom_data_helper.h"
#include "ui/base/data_transfer_policy/data_transfer_endpoint.h"
#include "ui/base/data_transfer_policy/data_transfer_endpoint_serializer.h"
#include "ui/base/data_transfer_policy/data_transfer_policy_controller.h"
#include "ui/gfx/codec/png_codec.h"
#include "ui/ozone/public/ozone_platform.h"
#include "ui/ozone/public/platform_clipboard.h"

namespace ui {

namespace {

// The amount of time to wait for a request to complete before aborting it.
constexpr base::TimeDelta kRequestTimeout =;

// Checks if DLP rules allow the clipboard read.
bool IsReadAllowed(std::optional<DataTransferEndpoint> data_src,
                   const DataTransferEndpoint* data_dst,
                   const base::span<uint8_t> data) {}

// Depending on the backend, the platform clipboard may or may not be
// available.  Should it be absent, we provide a dummy one.  It always calls
// back immediately with empty data. It starts without ownership of any buffers
// but will take and keep ownership after a call to OfferClipboardData(). By
// taking ownership, we allow ClipboardOzone to return existing data in
// ReadClipboardDataAndWait().
class StubPlatformClipboard : public PlatformClipboard {};

}  // namespace

// A helper class that uses a request pattern to asynchronously communicate
// with the ozone::PlatformClipboard and fetch clipboard data with the
// specified MIME types.
class ClipboardOzone::AsyncClipboardOzone {};

// ClipboardOzone implementation.
ClipboardOzone::ClipboardOzone() {}

ClipboardOzone::~ClipboardOzone() = default;

void ClipboardOzone::OnPreShutdown() {}

std::optional<DataTransferEndpoint> ClipboardOzone::GetSource(
    ClipboardBuffer buffer) const {}

const ClipboardSequenceNumberToken& ClipboardOzone::GetSequenceNumber(
    ClipboardBuffer buffer) const {}

bool ClipboardOzone::IsFormatAvailable(
    const ClipboardFormatType& format,
    ClipboardBuffer buffer,
    const DataTransferEndpoint* data_dst) const {}

void ClipboardOzone::Clear(ClipboardBuffer buffer) {}

std::vector<std::u16string> ClipboardOzone::GetStandardFormats(
    ClipboardBuffer buffer,
    const DataTransferEndpoint* data_dst) const {}

void ClipboardOzone::ReadAvailableTypes(
    ClipboardBuffer buffer,
    const DataTransferEndpoint* data_dst,
    std::vector<std::u16string>* types) const {}

void ClipboardOzone::ReadText(ClipboardBuffer buffer,
                              const DataTransferEndpoint* data_dst,
                              std::u16string* result) const {}

void ClipboardOzone::ReadAsciiText(ClipboardBuffer buffer,
                                   const DataTransferEndpoint* data_dst,
                                   std::string* result) const {}

void ClipboardOzone::ReadHTML(ClipboardBuffer buffer,
                              const DataTransferEndpoint* data_dst,
                              std::u16string* markup,
                              std::string* src_url,
                              uint32_t* fragment_start,
                              uint32_t* fragment_end) const {}

void ClipboardOzone::ReadSvg(ClipboardBuffer buffer,
                             const DataTransferEndpoint* data_dst,
                             std::u16string* result) const {}

void ClipboardOzone::ReadRTF(ClipboardBuffer buffer,
                             const DataTransferEndpoint* data_dst,
                             std::string* result) const {}

void ClipboardOzone::ReadPng(ClipboardBuffer buffer,
                             const DataTransferEndpoint* data_dst,
                             ReadPngCallback callback) const {}

void ClipboardOzone::ReadDataTransferCustomData(
    ClipboardBuffer buffer,
    const std::u16string& type,
    const DataTransferEndpoint* data_dst,
    std::u16string* result) const {}

void ClipboardOzone::ReadFilenames(ClipboardBuffer buffer,
                                   const DataTransferEndpoint* data_dst,
                                   std::vector<ui::FileInfo>* result) const {}

void ClipboardOzone::ReadBookmark(const DataTransferEndpoint* data_dst,
                                  std::u16string* title,
                                  std::string* url) const {}

void ClipboardOzone::ReadData(const ClipboardFormatType& format,
                              const DataTransferEndpoint* data_dst,
                              std::string* result) const {}

bool ClipboardOzone::IsSelectionBufferAvailable() const {}

void ClipboardOzone::WritePortableTextRepresentation(ClipboardBuffer buffer,
                                                     const ObjectMap& objects) {}

void ClipboardOzone::WritePortableAndPlatformRepresentations(
    ClipboardBuffer buffer,
    const ObjectMap& objects,
    std::vector<Clipboard::PlatformRepresentation> platform_representations,
    std::unique_ptr<DataTransferEndpoint> data_src,
    uint32_t privacy_types) {}

void ClipboardOzone::WriteText(std::string_view text) {}

void ClipboardOzone::WriteHTML(
    std::string_view markup,
    std::optional<std::string_view> /* source_url */) {}

void ClipboardOzone::WriteSvg(std::string_view markup) {}

void ClipboardOzone::WriteRTF(std::string_view rtf) {}

void ClipboardOzone::WriteFilenames(std::vector<ui::FileInfo> filenames) {}

void ClipboardOzone::WriteBookmark(std::string_view title,
                                   std::string_view url) {}

void ClipboardOzone::WriteWebSmartPaste() {}

void ClipboardOzone::WriteBitmap(const SkBitmap& bitmap) {}

void ClipboardOzone::WriteData(const ClipboardFormatType& format,
                               base::span<const uint8_t> data) {}

void ClipboardOzone::WriteClipboardHistory() {}

void ClipboardOzone::WriteUploadCloudClipboard() {}

void ClipboardOzone::WriteConfidentialDataForPassword() {}

void ClipboardOzone::AddSourceToClipboard(
    const ClipboardBuffer buffer,
    std::unique_ptr<DataTransferEndpoint> data_src) {}

}  // namespace ui