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// Copyright 2015 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/webui/settings/font_handler.h"
#include <stddef.h>
#include <string>
#include <utility>
#include <vector>
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/i18n/rtl.h"
#include "base/strings/utf_string_conversions.h"
#include "build/build_config.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/browser_finder.h"
#include "chrome/common/pref_names.h"
#include "components/prefs/pref_service.h"
#include "content/public/browser/font_list_async.h"
#include "content/public/browser/web_ui.h"
#if BUILDFLAG(IS_MAC)
#include "chrome/browser/ui/webui/settings/settings_utils.h"
#endif
namespace settings {
FontHandler::FontHandler(Profile* profile) {
#if BUILDFLAG(IS_MAC)
// Perform validation for saved fonts.
settings_utils::ValidateSavedFonts(profile->GetPrefs());
#endif
}
FontHandler::~FontHandler() {}
void FontHandler::RegisterMessages() {
web_ui()->RegisterMessageCallback(
"fetchFontsData", base::BindRepeating(&FontHandler::HandleFetchFontsData,
base::Unretained(this)));
}
void FontHandler::OnJavascriptAllowed() {}
void FontHandler::OnJavascriptDisallowed() {
weak_ptr_factory_.InvalidateWeakPtrs();
}
void FontHandler::HandleFetchFontsData(const base::Value::List& args) {
CHECK_EQ(1U, args.size());
const std::string& callback_id = args[0].GetString();
AllowJavascript();
content::GetFontListAsync(base::BindOnce(&FontHandler::FontListHasLoaded,
weak_ptr_factory_.GetWeakPtr(),
callback_id));
}
void FontHandler::FontListHasLoaded(std::string callback_id,
base::Value::List list) {
// Font list. Selects the directionality for the fonts in the given list.
for (auto& i : list) {
DCHECK(i.is_list());
base::Value::List& font = i.GetList();
DCHECK(font.size() >= 2u && font[1].is_string());
std::u16string value = base::UTF8ToUTF16(font[1].GetString());
bool has_rtl_chars = base::i18n::StringContainsStrongRTLChars(value);
font.Append(has_rtl_chars ? "rtl" : "ltr");
}
base::Value::Dict response;
response.Set("fontList", std::move(list));
ResolveJavascriptCallback(base::Value(callback_id), response);
}
} // namespace settings
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