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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/base/clipboard/clipboard_data.h"
#include <memory>
#include <optional>
#include <ostream>
#include <vector>
#include "ui/base/clipboard/clipboard_sequence_number_token.h"
#include "ui/base/data_transfer_policy/data_transfer_endpoint.h"
#include "ui/gfx/skia_util.h"
namespace ui {
ClipboardData::ClipboardData() = default;
ClipboardData::ClipboardData(const ClipboardData& other) {
sequence_number_token_ = other.sequence_number_token_;
format_ = other.format_;
text_ = other.text_;
markup_data_ = other.markup_data_;
url_ = other.url_;
rtf_data_ = other.rtf_data_;
maybe_png_ = other.maybe_png_;
maybe_bitmap_ = other.maybe_bitmap_;
bookmark_title_ = other.bookmark_title_;
bookmark_url_ = other.bookmark_url_;
custom_data_ = other.custom_data_;
web_smart_paste_ = other.web_smart_paste_;
svg_data_ = other.svg_data_;
filenames_ = other.filenames_;
src_ = other.src_;
#if BUILDFLAG(IS_CHROMEOS)
commit_time_ = other.commit_time_;
#endif // BUILDFLAG(IS_CHROMEOS)
}
ClipboardData::ClipboardData(ClipboardData&&) = default;
ClipboardData& ClipboardData::operator=(ClipboardData&& rhs) = default;
ClipboardData::~ClipboardData() = default;
bool ClipboardData::operator==(const ClipboardData& that) const {
// Two `ClipboardData` instances are equal if they have the same contents.
// Their sequence number tokens need not be the same, but if they are, we
// can be sure the data contents will be the same as well.
if (sequence_number_token_ == that.sequence_number_token_)
return true;
bool equal_except_images =
format_ == that.format() && text_ == that.text() &&
markup_data_ == that.markup_data() && url_ == that.url() &&
rtf_data_ == that.rtf_data() &&
bookmark_title_ == that.bookmark_title() &&
bookmark_url_ == that.bookmark_url() &&
custom_data_ == that.custom_data_ &&
web_smart_paste_ == that.web_smart_paste() &&
svg_data_ == that.svg_data() && filenames_ == that.filenames() &&
(src_ ? (that.source().has_value() && *src_ == *that.source())
: !that.source().has_value());
if (!equal_except_images)
return false;
// Both instances have encoded PNGs. Compare these.
if (maybe_png_.has_value() && that.maybe_png_.has_value())
return maybe_png_ == that.maybe_png_;
// If only one of the these instances has a bitmap which has not yet been
// encoded as a PNG, we can't be sure that the images are equal without
// encoding the bitamp here, on the UI thread. To avoid this, just return
// false. This means that in the below scenario, a != b.
//
// ClipboardData a;
// a.SetBitmapData(image);
//
// ClipboardData b;
// b.SetPngData(clipboard_util::EncodeBitmapToPng(image));
//
// Avoid this scenario if possible.
if (maybe_bitmap_.has_value() != that.maybe_bitmap_.has_value())
return false;
// Both or neither instances have a bitmap. Compare the bitmaps to determine
// equality without encoding.
return !maybe_bitmap_.has_value() ||
gfx::BitmapsAreEqual(maybe_bitmap_.value(),
that.maybe_bitmap_.value());
}
std::optional<size_t> ClipboardData::CalculateSize(
const std::optional<ClipboardInternalFormat>& format,
const std::optional<ClipboardFormatType>& custom_data_format) const {
size_t total_size = 0;
if (format_ & static_cast<int>(ClipboardInternalFormat::kText)) {
if (format.has_value() && *format == ClipboardInternalFormat::kText)
return text_.size();
total_size += text_.size();
}
if (format_ & static_cast<int>(ClipboardInternalFormat::kHtml)) {
if (format.has_value() && *format == ClipboardInternalFormat::kHtml)
return markup_data_.size() + url_.size();
total_size += markup_data_.size() + url_.size();
}
if (format_ & static_cast<int>(ClipboardInternalFormat::kSvg)) {
if (format.has_value() && *format == ClipboardInternalFormat::kSvg)
return svg_data_.size();
total_size += svg_data_.size();
}
if (format_ & static_cast<int>(ClipboardInternalFormat::kRtf)) {
if (format.has_value() && *format == ClipboardInternalFormat::kRtf)
return rtf_data_.size();
total_size += rtf_data_.size();
}
if (format_ & static_cast<int>(ClipboardInternalFormat::kBookmark)) {
if (format.has_value() && *format == ClipboardInternalFormat::kBookmark)
return bookmark_title_.size() + bookmark_url_.size();
total_size += bookmark_title_.size() + bookmark_url_.size();
}
if (format_ & static_cast<int>(ClipboardInternalFormat::kPng)) {
// If there is an unencoded image, use the bitmap's size. This will be
// inaccurate by a few bytes.
size_t image_size;
if (maybe_png_.has_value()) {
image_size = maybe_png_.value().size();
} else {
DCHECK(maybe_bitmap_.has_value());
image_size = maybe_bitmap_.value().computeByteSize();
}
if (format.has_value() && *format == ClipboardInternalFormat::kPng)
return image_size;
total_size += image_size;
}
if (format_ & static_cast<int>(ClipboardInternalFormat::kCustom)) {
size_t custom_data_size = 0;
if (custom_data_format) {
const auto& it = custom_data_.find(*custom_data_format);
if (it != custom_data_.end()) {
custom_data_size = it->second.size();
}
} else {
for (const auto& data : custom_data_) {
custom_data_size += data.second.size();
}
}
if (format.has_value() && *format == ClipboardInternalFormat::kCustom) {
return custom_data_size;
}
total_size += custom_data_size;
}
if (format.has_value() ||
(format_ & static_cast<int>(ClipboardInternalFormat::kFilenames))) {
return std::nullopt;
}
return total_size;
}
void ClipboardData::SetPngData(std::vector<uint8_t> png) {
maybe_bitmap_ = std::nullopt;
maybe_png_ = std::move(png);
format_ |= static_cast<int>(ClipboardInternalFormat::kPng);
}
void ClipboardData::SetPngDataAfterEncoding(std::vector<uint8_t> png) const {
// Bitmap data can be kept around since we know it corresponds to this PNG.
// The bitmap can be used to compare two ClipboardData instances even if only
// one had been encoded to a PNG.
DCHECK(maybe_bitmap_.has_value());
DCHECK(format_ & static_cast<int>(ClipboardInternalFormat::kPng));
maybe_png_ = std::move(png);
}
void ClipboardData::SetBitmapData(const SkBitmap& bitmap) {
DCHECK_EQ(bitmap.colorType(), kN32_SkColorType);
maybe_bitmap_ = bitmap;
maybe_png_ = std::nullopt;
format_ |= static_cast<int>(ClipboardInternalFormat::kPng);
}
std::optional<SkBitmap> ClipboardData::GetBitmapIfPngNotEncoded() const {
return maybe_png_.has_value() ? std::nullopt : maybe_bitmap_;
}
bool ClipboardData::HasCustomDataFormat(
const ClipboardFormatType& format) const {
return custom_data_.find(format) != custom_data_.end();
}
std::string ClipboardData::GetCustomData(
const ClipboardFormatType& format) const {
auto it = custom_data_.find(format);
return it != custom_data_.end() ? it->second : std::string();
}
std::string ClipboardData::GetDataTransferCustomData() const {
return GetCustomData(ClipboardFormatType::DataTransferCustomType());
}
void ClipboardData::SetCustomData(const ClipboardFormatType& format,
const std::string& data) {
custom_data_[format] = data;
format_ |= static_cast<int>(ClipboardInternalFormat::kCustom);
}
} // namespace ui
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