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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_insert_media.h"
#include <optional>
#include <string>
#include <utility>
#include <variant>
#include "ash/quick_insert/quick_insert_clipboard_insertion.h"
#include "ash/quick_insert/quick_insert_copy_media.h"
#include "ash/quick_insert/quick_insert_rich_media.h"
#include "ash/quick_insert/quick_insert_web_paste_target.h"
#include "base/base64.h"
#include "base/files/file_util.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/logging.h"
#include "base/memory/weak_ptr.h"
#include "base/strings/strcat.h"
#include "base/strings/utf_string_conversions.h"
#include "base/task/thread_pool.h"
#include "net/base/mime_util.h"
#include "third_party/abseil-cpp/absl/functional/overload.h"
#include "ui/base/clipboard/clipboard_data.h"
#include "ui/base/ime/text_input_client.h"
#include "ui/base/ime/text_input_type.h"
#include "url/gurl.h"
namespace ash {
namespace {
std::optional<std::string> GetMediaTypeFromFilePath(
const base::FilePath& path) {
std::string mime_type;
if (!net::GetMimeTypeFromFile(path, &mime_type)) {
return std::nullopt;
}
return mime_type;
}
std::optional<std::string> ReadFileToString(const base::FilePath& path) {
std::string result;
if (!base::ReadFileToString(path, &result)) {
LOG(WARNING) << "Failed reading file";
return std::nullopt;
}
return result;
}
void ReadFileAsync(
base::FilePath path,
base::OnceCallback<void(std::optional<std::string>)> callback) {
base::ThreadPool::PostTaskAndReplyWithResult(
FROM_HERE, {base::MayBlock(), base::TaskPriority::USER_VISIBLE},
base::BindOnce(&ReadFileToString, std::move(path)), std::move(callback));
}
std::optional<GURL> ConvertToDataUrl(std::string_view media_type,
std::optional<std::string> data) {
if (!data.has_value()) {
return std::nullopt;
}
return GURL(base::StrCat(
{"data:", media_type, ";base64,", base::Base64Encode(*data)}));
}
bool ShouldSkipLinkClipboardInsertion(const GURL& url_of_target) {
// Google Slides does not correctly handle pasting of links.
return url_of_target.DomainIs("docs.google.com") &&
url_of_target.path_piece().starts_with("/presentation/");
}
// Some websites such as https://x.com use a `contenteditable` text field, but
// `<a>` elements are stripped. Inserting
// <a href="https://example.com">Example</a>
// into these text fields will result in a _plain text_ "Example", without a
// link. As a result, we only insert link titles on a set of allowlisted
// websites. If this returns false, we insert
// <a title="Example" href="https://example.com">https://example.com</a>
// instead, which, if the `<a>` element is stripped, still inserts the link
// "https://example.com".
//
// TODO: b/337064111 - Determine allowlist for inserting link title.
bool ShouldUseLinkTitle(const GURL& url_of_target) {
if (url_of_target.DomainIs("google.com")) {
return !url_of_target.DomainIs("docs.google.com");
}
if (url_of_target.DomainIs("onedrive.live.com") ||
url_of_target.DomainIs("sharepoint.com")) {
return true;
}
return false;
}
void InsertMediaToInputFieldNoClipboard(
QuickInsertRichMedia media,
ui::TextInputClient& client,
OnInsertMediaCompleteCallback callback) {
std::visit(
absl::Overload{
[&client, &callback](QuickInsertTextMedia media) mutable {
client.InsertText(media.text,
ui::TextInputClient::InsertTextCursorBehavior::
kMoveCursorAfterText);
std::move(callback).Run(InsertMediaResult::kSuccess);
},
[&client, &callback](QuickInsertImageMedia media) mutable {
if (!client.CanInsertImage()) {
std::move(callback).Run(InsertMediaResult::kUnsupported);
return;
}
client.InsertImage(media.url);
std::move(callback).Run(InsertMediaResult::kSuccess);
},
[&client, &callback](QuickInsertLinkMedia media) mutable {
client.InsertText(base::UTF8ToUTF16(media.url.spec()),
ui::TextInputClient::InsertTextCursorBehavior::
kMoveCursorAfterText);
std::move(callback).Run(InsertMediaResult::kSuccess);
},
[&client, &callback](QuickInsertLocalFileMedia media) mutable {
if (!client.CanInsertImage()) {
std::move(callback).Run(InsertMediaResult::kUnsupported);
return;
}
std::optional<std::string> media_type =
GetMediaTypeFromFilePath(media.path);
if (!media_type.has_value()) {
std::move(callback).Run(InsertMediaResult::kUnsupported);
return;
}
ReadFileAsync(
media.path,
base::BindOnce(ConvertToDataUrl, std::move(*media_type))
.Then(base::BindOnce(
[](base::WeakPtr<ui::TextInputClient> client,
OnInsertMediaCompleteCallback callback,
std::optional<GURL> url) {
if (!url.has_value()) {
std::move(callback).Run(
InsertMediaResult::kNotFound);
return;
}
client->InsertImage(*url);
std::move(callback).Run(InsertMediaResult::kSuccess);
},
client.AsWeakPtr(), std::move(callback))));
},
},
std::move(media));
}
} // namespace
bool InputFieldSupportsInsertingMedia(const QuickInsertRichMedia& media,
ui::TextInputClient& client) {
return std::visit(absl::Overload{
[](const QuickInsertTextMedia& media) { return true; },
[&client](const QuickInsertImageMedia& media) {
return client.CanInsertImage();
},
[](const QuickInsertLinkMedia& media) { return true; },
[&client](const QuickInsertLocalFileMedia& media) {
return client.CanInsertImage();
},
},
media);
}
void InsertMediaToInputField(QuickInsertRichMedia media,
ui::TextInputClient& client,
WebPasteTargetCallback get_web_paste_target,
OnInsertMediaCompleteCallback callback) {
if (std::holds_alternative<QuickInsertLinkMedia>(media) &&
client.GetTextInputType() == ui::TEXT_INPUT_TYPE_CONTENT_EDITABLE) {
std::optional<QuickInsertWebPasteTarget> web_paste_target =
get_web_paste_target.is_null() ? std::nullopt
: std::move(get_web_paste_target).Run();
base::OnceClosure do_paste;
QuickInsertClipboardDataOptions clipboard_data_options;
bool skip_clipboard_insertion = false;
if (web_paste_target.has_value()) {
do_paste = std::move(web_paste_target->do_paste);
clipboard_data_options.links_should_use_title =
ShouldUseLinkTitle(web_paste_target->url);
skip_clipboard_insertion =
ShouldSkipLinkClipboardInsertion(web_paste_target->url);
}
if (!skip_clipboard_insertion) {
InsertClipboardData(
ClipboardDataFromMedia(media, clipboard_data_options),
std::move(do_paste),
base::BindOnce(
[](QuickInsertRichMedia media,
base::WeakPtr<ui::TextInputClient> client,
OnInsertMediaCompleteCallback callback, bool success) {
if (success) {
std::move(callback).Run(InsertMediaResult::kSuccess);
return;
}
if (client == nullptr) {
std::move(callback).Run(InsertMediaResult::kUnsupported);
return;
}
InsertMediaToInputFieldNoClipboard(std::move(media), *client,
std::move(callback));
},
std::move(media), client.AsWeakPtr(), std::move(callback)));
return;
}
}
InsertMediaToInputFieldNoClipboard(std::move(media), client,
std::move(callback));
}
} // namespace ash
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