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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/file_system_access/file_system_access_ui_helpers.h"
#include <optional>
#include <string>
#include "base/containers/contains.h"
#include "base/files/file_path.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/url_identity.h"
#include "content/public/browser/file_system_access_permission_context.h"
#include "ui/gfx/font_list.h"
#include "ui/gfx/text_elider.h"
#include "url/gurl.h"
#if defined(TOOLKIT_VIEWS)
#include "ui/views/layout/layout_provider.h"
#endif
namespace {
// The denominator for calculating the available pixel width for different file
// name. For example, if the file name contains space, the file name should be
// elided to 2/6 of the modal width.
// Previously this was introduced as 4 in http://crrev.com/c/3955966, but it
// needs to be larger to make the string takes less space, so the extension is
// displayed without clipping.
// See http://crbug.com/421950224.
constexpr int kAvailablePixelWidthDenominator = 6;
base::FilePath GetPathForDisplayAsPath(const content::PathInfo& path_info) {
// Use display_name for android content-URIs.
#if BUILDFLAG(IS_ANDROID)
if (path_info.path.IsContentUri()) {
return base::FilePath(path_info.display_name);
}
#endif
// Display the drive letter if the path is the root of the filesystem.
auto dir_name = path_info.path.DirName();
if (!path_info.path.empty() &&
(dir_name.empty() || path_info.path == dir_name)) {
return path_info.path;
}
return path_info.path.BaseName();
}
// Expected URL types for `UrlIdentity::CreateFromUrl()`.
constexpr UrlIdentity::TypeSet kUrlIdentityAllowedTypes = {
UrlIdentity::Type::kDefault, UrlIdentity::Type::kFile,
UrlIdentity::Type::kIsolatedWebApp, UrlIdentity::Type::kChromeExtension};
constexpr UrlIdentity::FormatOptions kUrlIdentityOptions{
.default_options = {
UrlIdentity::DefaultFormatOptions::kOmitCryptographicScheme}};
} // namespace
namespace file_system_access_ui_helper {
std::u16string GetElidedPathForDisplayAsTitle(
const content::PathInfo& path_info) {
// TODO(crbug.com/40254943): Consider moving filename elision logic into a
// core component, which would allow for dynamic elision based on the _actual_
// available pixel width and font of the dialog.
//
// Ensure file names containing spaces won't overflow to the next line in the
// title of a permission prompt, which is very hard to read. File names not
// containing a space will bump to the next line if the file name + preceding
// text in the title is too long, which is still easy to read because the file
// name is contiguous.
int scalar_numerators =
base::Contains(GetPathForDisplayAsPath(path_info).value(),
FILE_PATH_LITERAL(" "))
? 2
: 3;
std::optional<int> preferred_width;
#if defined(TOOLKIT_VIEWS)
// views::LayoutProvider::Get() may be null in tests.
if (views::LayoutProvider::Get()) {
preferred_width = views::LayoutProvider::Get()->GetDistanceMetric(
views::DISTANCE_MODAL_DIALOG_PREFERRED_WIDTH);
}
#endif
const int available_pixel_width = preferred_width.value_or(400) *
scalar_numerators /
kAvailablePixelWidthDenominator;
return gfx::ElideFilename(GetPathForDisplayAsPath(path_info), gfx::FontList(),
available_pixel_width);
}
std::u16string GetPathForDisplayAsParagraph(
const content::PathInfo& path_info) {
// Paragraph text will wrap to the next line rather than overflow, so
// there's no need to elide the file name.
return GetPathForDisplayAsPath(path_info).LossyDisplayName();
}
std::u16string GetUrlIdentityName(Profile* profile, const GURL& url) {
return UrlIdentity::CreateFromUrl(profile, url, kUrlIdentityAllowedTypes,
kUrlIdentityOptions)
.name;
}
} // namespace file_system_access_ui_helper
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