blob: 97db9cdf3adf36e8302fa5cdc26fe78fbe309987 [file] [log] [blame]
// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/open_from_clipboard/clipboard_recent_content_generic.h"
#include "base/strings/string_util.h"
#include "ui/base/clipboard/clipboard.h"
namespace {
// Schemes appropriate for suggestion by ClipboardRecentContent.
const char* kAuthorizedSchemes[] = {
url::kAboutScheme, url::kDataScheme, url::kHttpScheme, url::kHttpsScheme,
// TODO(mpearson): add support for chrome:// URLs. Right now the scheme
// for that lives in content and is accessible via
// GetEmbedderRepresentationOfAboutScheme() or content::kChromeUIScheme
// TODO(mpearson): when adding desktop support, add kFileScheme, kFtpScheme,
// and kGopherScheme.
};
} // namespace
ClipboardRecentContentGeneric::ClipboardRecentContentGeneric() {}
base::Optional<GURL>
ClipboardRecentContentGeneric::GetRecentURLFromClipboard() {
if (GetClipboardContentAge() > MaximumAgeOfClipboard())
return base::nullopt;
// Get and clean up the clipboard before processing.
std::string gurl_string;
ui::Clipboard* clipboard = ui::Clipboard::GetForCurrentThread();
clipboard->ReadAsciiText(ui::ClipboardBuffer::kCopyPaste, &gurl_string);
base::TrimWhitespaceASCII(gurl_string, base::TrimPositions::TRIM_ALL,
&gurl_string);
// Interpret the clipboard as a URL if possible.
GURL url;
// If there is mid-string whitespace, don't attempt to interpret the string
// as a URL. (Otherwise gurl will happily try to convert
// "http://example.com extra words" into "http://example.com%20extra%20words",
// which is not likely to be a useful or intended destination.)
if (gurl_string.find_first_of(base::kWhitespaceASCII) != std::string::npos)
return base::nullopt;
if (!gurl_string.empty()) {
url = GURL(gurl_string);
} else {
// Fall back to unicode / UTF16, as some URLs may use international domain
// names, not punycode.
base::string16 gurl_string16;
clipboard->ReadText(ui::ClipboardBuffer::kCopyPaste, &gurl_string16);
base::TrimWhitespace(gurl_string16, base::TrimPositions::TRIM_ALL,
&gurl_string16);
if (gurl_string16.find_first_of(base::kWhitespaceUTF16) !=
std::string::npos)
return base::nullopt;
if (!gurl_string16.empty())
url = GURL(gurl_string16);
}
if (!url.is_valid() || !IsAppropriateSuggestion(url)) {
return base::nullopt;
}
return url;
}
base::Optional<base::string16>
ClipboardRecentContentGeneric::GetRecentTextFromClipboard() {
if (GetClipboardContentAge() > MaximumAgeOfClipboard())
return base::nullopt;
base::string16 text_from_clipboard;
ui::Clipboard::GetForCurrentThread()->ReadText(
ui::ClipboardBuffer::kCopyPaste, &text_from_clipboard);
base::TrimWhitespace(text_from_clipboard, base::TrimPositions::TRIM_ALL,
&text_from_clipboard);
if (text_from_clipboard.empty()) {
return base::nullopt;
}
return text_from_clipboard;
}
base::Optional<gfx::Image>
ClipboardRecentContentGeneric::GetRecentImageFromClipboard() {
return base::nullopt;
}
base::TimeDelta ClipboardRecentContentGeneric::GetClipboardContentAge() const {
const base::Time last_modified_time =
ui::Clipboard::GetForCurrentThread()->GetLastModifiedTime();
const base::Time now = base::Time::Now();
// In case of system clock change, assume the last modified time is now.
// (Don't return a negative age, i.e., a time in the future.)
if (last_modified_time > now)
return base::TimeDelta();
return now - last_modified_time;
}
void ClipboardRecentContentGeneric::SuppressClipboardContent() {
// User cleared the user data. The pasteboard entry must be removed from the
// omnibox list. Do this by pretending the current clipboard is ancient,
// not recent.
ui::Clipboard::GetForCurrentThread()->ClearLastModifiedTime();
}
// static
bool ClipboardRecentContentGeneric::IsAppropriateSuggestion(const GURL& url) {
// Check to make sure it's a scheme we're willing to suggest.
for (const auto* authorized_scheme : kAuthorizedSchemes) {
if (url.SchemeIs(authorized_scheme))
return true;
}
// Not a scheme we're allowed to return.
return false;
}