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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/quick_insert/quick_insert_copy_media.h"
#include <iterator>
#include <memory>
#include <string>
#include <string_view>
#include <variant>
#include <vector>
#include "ash/constants/notifier_catalogs.h"
#include "ash/public/cpp/system/toast_data.h"
#include "ash/public/cpp/system/toast_manager.h"
#include "ash/quick_insert/quick_insert_rich_media.h"
#include "base/check_deref.h"
#include "base/containers/to_vector.h"
#include "base/strings/escape.h"
#include "base/strings/strcat.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "base/types/strong_alias.h"
#include "third_party/abseil-cpp/absl/functional/overload.h"
#include "ui/base/clipboard/clipboard_data.h"
#include "ui/base/clipboard/clipboard_non_backed.h"
#include "ui/base/clipboard/file_info.h"
#include "ui/gfx/geometry/size.h"
#include "url/gurl.h"
namespace ash {
namespace {
constexpr char kQuickInsertCopyToClipboardToastId[] =
"quick_insert_copy_to_clipboard";
struct HtmlAttr {
private:
using Name = base::StrongAlias<class NameTag, std::string_view>;
public:
static constexpr auto kSrc = Name("src");
static constexpr auto kReferrerPolicy = Name("referrerpolicy");
static constexpr auto kAlt = Name("alt");
static constexpr auto kWidth = Name("width");
static constexpr auto kHeight = Name("height");
// `name` must be set to one of the values above.
Name name;
std::string value;
};
std::string ImageHtmlAttrsToStr(std::vector<HtmlAttr> attrs) {
return base::StringPrintf(
R"(<img %s/>)",
base::JoinString(base::ToVector(attrs,
[](const HtmlAttr& attr) {
return base::StringPrintf(
R"(%s="%s")", *attr.name,
attr.value.c_str());
}),
" ")
.c_str());
}
std::string BuildImageHtml(const QuickInsertImageMedia& image) {
std::vector<HtmlAttr> attrs;
// GURL::specs are always canonicalised and escaped, so this cannot result in
// an XSS.
attrs.emplace_back(HtmlAttr::kSrc, image.url.spec());
// Referrer-Policy is used to prevent the website from getting information
// about where the GIFs are being used.
attrs.emplace_back(HtmlAttr::kReferrerPolicy, "no-referrer");
if (!image.content_description.empty()) {
attrs.emplace_back(
HtmlAttr::kAlt,
base::EscapeForHTML(base::UTF16ToUTF8(image.content_description)));
}
if (image.dimensions.has_value()) {
attrs.emplace_back(HtmlAttr::kWidth,
base::NumberToString(image.dimensions->width()));
attrs.emplace_back(HtmlAttr::kHeight,
base::NumberToString(image.dimensions->height()));
}
return ImageHtmlAttrsToStr(std::move(attrs));
}
} // namespace
std::unique_ptr<ui::ClipboardData> ClipboardDataFromMedia(
const QuickInsertRichMedia& media,
const QuickInsertClipboardDataOptions& options) {
auto data = std::make_unique<ui::ClipboardData>();
std::visit(
absl::Overload{
[&data](const QuickInsertTextMedia& media) {
data->set_text(base::UTF16ToUTF8(media.text));
},
[&data](const QuickInsertImageMedia& media) {
data->set_markup_data(BuildImageHtml(media));
},
[&data, &options](const QuickInsertLinkMedia& media) {
std::string escaped_spec = base::EscapeForHTML(media.url.spec());
std::string escaped_title = base::EscapeForHTML(media.title);
data->set_text(media.url.spec());
if (options.links_should_use_title) {
data->set_markup_data(base::StrCat(
{"<a href=\"", escaped_spec, "\">", escaped_title, "</a>"}));
} else {
data->set_markup_data(
base::StrCat({"<a title=\"", escaped_title, "\" href=\"",
escaped_spec, "\">", escaped_spec, "</a>"}));
}
},
[&data](const QuickInsertLocalFileMedia& media) {
data->set_filenames(
{ui::FileInfo(media.path, /*display_name=*/{})});
},
},
media);
return data;
}
void CopyMediaToClipboard(const QuickInsertRichMedia& media) {
CHECK_DEREF(ui::ClipboardNonBacked::GetForCurrentThread())
.WriteClipboardData(ClipboardDataFromMedia(
media,
QuickInsertClipboardDataOptions{.links_should_use_title = false}));
// Show a toast to inform the user about the copy.
// TODO: b/322928125 - Use dedicated toast catalog name.
// TODO: b/322928125 - Finalize string.
ToastManager::Get()->Show(ToastData(
kQuickInsertCopyToClipboardToastId,
ToastCatalogName::kCopyGifToClipboardAction, u"Copied to clipboard"));
}
} // namespace ash
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