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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_BASE_CLIPBOARD_CLIPBOARD_WIN_H_
#define UI_BASE_CLIPBOARD_CLIPBOARD_WIN_H_
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include <string_view>
#include "ui/base/clipboard/clipboard.h"
#include "ui/base/clipboard/clipboard_change_notifier.h"
#include "ui/base/clipboard/clipboard_format_type.h"
namespace base {
namespace win {
class MessageWindow;
}
}
namespace ui {
class ClipboardChangeNotifier;
// Documentation on the underlying Win32 API this ultimately abstracts is
// available at
// https://docs.microsoft.com/en-us/windows/win32/dataxchg/clipboard.
class ClipboardWin : public Clipboard, public ClipboardChangeNotifier {
public:
ClipboardWin(const ClipboardWin&) = delete;
ClipboardWin& operator=(const ClipboardWin&) = delete;
// ClipboardChangeNotifier overrides:
void StartNotifying() override;
void StopNotifying() override;
private:
friend class Clipboard;
ClipboardWin();
~ClipboardWin() override;
// Clipboard overrides:
void OnPreShutdown() override;
std::optional<DataTransferEndpoint> GetSource(
ClipboardBuffer buffer) const override;
const ClipboardSequenceNumberToken& GetSequenceNumber(
ClipboardBuffer buffer) const override;
std::vector<std::u16string> GetStandardFormats(
ClipboardBuffer buffer,
const DataTransferEndpoint* data_dst) const override;
bool IsFormatAvailable(const ClipboardFormatType& format,
ClipboardBuffer buffer,
const DataTransferEndpoint* data_dst) const override;
void Clear(ClipboardBuffer buffer) override;
void ReadAvailableTypes(ClipboardBuffer buffer,
const DataTransferEndpoint* data_dst,
std::vector<std::u16string>* types) const override;
void ReadText(ClipboardBuffer buffer,
const DataTransferEndpoint* data_dst,
std::u16string* result) const override;
void ReadAsciiText(ClipboardBuffer buffer,
const DataTransferEndpoint* data_dst,
std::string* result) const override;
void ReadHTML(ClipboardBuffer buffer,
const DataTransferEndpoint* data_dst,
std::u16string* markup,
std::string* src_url,
uint32_t* fragment_start,
uint32_t* fragment_end) const override;
void ReadSvg(ClipboardBuffer buffer,
const DataTransferEndpoint* data_dst,
std::u16string* result) const override;
void ReadRTF(ClipboardBuffer buffer,
const DataTransferEndpoint* data_dst,
std::string* result) const override;
void ReadPng(ClipboardBuffer buffer,
const DataTransferEndpoint* data_dst,
ReadPngCallback callback) const override;
void ReadDataTransferCustomData(ClipboardBuffer buffer,
const std::u16string& type,
const DataTransferEndpoint* data_dst,
std::u16string* result) const override;
void ReadFilenames(ClipboardBuffer buffer,
const DataTransferEndpoint* data_dst,
std::vector<ui::FileInfo>* result) const override;
void ReadBookmark(const DataTransferEndpoint* data_dst,
std::u16string* title,
std::string* url) const override;
void ReadData(const ClipboardFormatType& format,
const DataTransferEndpoint* data_dst,
std::string* result) const override;
void WritePortableAndPlatformRepresentations(
ClipboardBuffer buffer,
const ObjectMap& objects,
const std::vector<RawData>& raw_objects,
std::vector<Clipboard::PlatformRepresentation> platform_representations,
std::unique_ptr<DataTransferEndpoint> data_src,
uint32_t privacy_types) override;
void WriteText(std::string_view text) override;
void WriteHTML(std::string_view markup,
std::optional<std::string_view> source_url) override;
void WriteSvg(std::string_view markup) override;
void WriteRTF(std::string_view rtf) override;
void WriteFilenames(std::vector<ui::FileInfo> filenames) override;
void WriteBookmark(std::string_view title, std::string_view url) override;
void WriteWebSmartPaste() override;
void WriteBitmap(const SkBitmap& bitmap) override;
void WriteData(const ClipboardFormatType& format,
base::span<const uint8_t> data) override;
void WriteClipboardHistory() override;
void WriteUploadCloudClipboard() override;
void WriteConfidentialDataForPassword() override;
std::vector<uint8_t> ReadPngInternal(ClipboardBuffer buffer) const;
SkBitmap ReadBitmapInternal(ClipboardBuffer buffer) const;
// Safely write to system clipboard. Free |handle| on failure.
// This function takes ownership of the given handle's memory.
void WriteToClipboard(ClipboardFormatType format, HANDLE handle);
// Return the window that should be the clipboard owner, creating it
// if necessary. Marked const for lazily initialization by const methods.
HWND GetClipboardWindow() const;
// Mark this as mutable so const methods can still do lazy initialization.
mutable std::unique_ptr<base::win::MessageWindow> clipboard_owner_;
// Mapping of OS-provided sequence number to a unique token.
mutable struct {
DWORD sequence_number;
ClipboardSequenceNumberToken token;
} clipboard_sequence_;
// Whether the clipboard is being monitored for changes.
bool monitoring_clipboard_changes_ = false;
};
} // namespace ui
#endif // UI_BASE_CLIPBOARD_CLIPBOARD_WIN_H_
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