Source/WebCore/platform/PlatformPasteboard.h

/*
 * Copyright (C) 2012-2021 Apple Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#include "DataOwnerType.h"
#include <wtf/Forward.h>
#include <wtf/Function.h>
#include <wtf/RetainPtr.h>
#include <wtf/Vector.h>

#if PLATFORM(MAC)
OBJC_CLASS NSPasteboard;
OBJC_CLASS NSPasteboardItem;
#endif

#if PLATFORM(IOS_FAMILY)
OBJC_CLASS UIPasteboard;
#endif

#if USE(LIBWPE)
struct wpe_pasteboard;
#endif

namespace WebCore {

class Color;
class SharedBuffer;
class PasteboardCustomData;
class SelectionData;
struct PasteboardImage;
struct PasteboardItemInfo;
struct PasteboardURL;
struct PasteboardWebContent;
class FragmentedSharedBuffer;

class PlatformPasteboard {
public:
    WEBCORE_EXPORT explicit PlatformPasteboard(const String& pasteboardName);
#if PLATFORM(IOS_FAMILY) || USE(LIBWPE)
    WEBCORE_EXPORT PlatformPasteboard();
    WEBCORE_EXPORT void updateSupportedTypeIdentifiers(const Vector<String>& types);
#endif
    WEBCORE_EXPORT std::optional<PasteboardItemInfo> informationForItemAtIndex(size_t index, int64_t changeCount);
    WEBCORE_EXPORT std::optional<Vector<PasteboardItemInfo>> allPasteboardItemInfo(int64_t changeCount);

    WEBCORE_EXPORT static void performAsDataOwner(DataOwnerType, Function<void()>&&);

    enum class IncludeImageTypes : bool { No, Yes };
    static String platformPasteboardTypeForSafeTypeForDOMToReadAndWrite(const String& domType, IncludeImageTypes = IncludeImageTypes::No);

    WEBCORE_EXPORT void getTypes(Vector<String>& types) const;
    WEBCORE_EXPORT RefPtr<SharedBuffer> bufferForType(const String& pasteboardType) const;
    WEBCORE_EXPORT void getPathnamesForType(Vector<String>& pathnames, const String& pasteboardType) const;
    WEBCORE_EXPORT String stringForType(const String& pasteboardType) const;
    WEBCORE_EXPORT Vector<String> allStringsForType(const String& pasteboardType) const;
    WEBCORE_EXPORT int64_t changeCount() const;
    WEBCORE_EXPORT Color color();
    WEBCORE_EXPORT URL url();

    // Take ownership of the pasteboard, and return new change count.
    WEBCORE_EXPORT int64_t addTypes(const Vector<String>& pasteboardTypes);
    WEBCORE_EXPORT int64_t setTypes(const Vector<String>& pasteboardTypes);

    // These methods will return 0 if pasteboard ownership has been taken from us.
    WEBCORE_EXPORT int64_t copy(const String& fromPasteboard);
    WEBCORE_EXPORT int64_t setBufferForType(SharedBuffer*, const String& pasteboardType);
    WEBCORE_EXPORT int64_t setURL(const PasteboardURL&);
    WEBCORE_EXPORT int64_t setColor(const Color&);
    WEBCORE_EXPORT int64_t setStringForType(const String&, const String& pasteboardType);
    WEBCORE_EXPORT void write(const PasteboardWebContent&);
    WEBCORE_EXPORT void write(const PasteboardImage&);
    WEBCORE_EXPORT void write(const String& pasteboardType, const String&);
    WEBCORE_EXPORT void write(const PasteboardURL&);
    WEBCORE_EXPORT RefPtr<SharedBuffer> readBuffer(std::optional<size_t> index, const String& pasteboardType) const;
    WEBCORE_EXPORT String readString(size_t index, const String& pasteboardType) const;
    WEBCORE_EXPORT URL readURL(size_t index, String& title) const;
    WEBCORE_EXPORT int count() const;
    WEBCORE_EXPORT int numberOfFiles() const;
    WEBCORE_EXPORT int64_t write(const Vector<PasteboardCustomData>&);
    WEBCORE_EXPORT int64_t write(const PasteboardCustomData&);
    WEBCORE_EXPORT Vector<String> typesSafeForDOMToReadAndWrite(const String& origin) const;
    WEBCORE_EXPORT bool containsStringSafeForDOMToReadForType(const String&) const;

#if PLATFORM(COCOA)
    WEBCORE_EXPORT bool containsURLStringSuitableForLoading();
    WEBCORE_EXPORT String urlStringSuitableForLoading(String& title);
#endif

private:
#if PLATFORM(IOS_FAMILY)
    bool allowReadingURLAtIndex(const URL&, int index) const;
#endif

#if PLATFORM(MAC)
    NSPasteboardItem *itemAtIndex(size_t index) const;
#endif

#if PLATFORM(MAC)
    RetainPtr<NSPasteboard> m_pasteboard;
#endif
#if PLATFORM(IOS_FAMILY)
    RetainPtr<id> m_pasteboard;
#endif
#if USE(LIBWPE)
    struct wpe_pasteboard* m_pasteboard;
#endif
};

} // namespace WebCore