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// Copyright 2015 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 "chrome/browser/ui/webui/settings/font_handler.h"
#include <stddef.h>
#include <string>
#include <utility>
#include <vector>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/i18n/rtl.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/extensions/extension_tab_util.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"
#include "extensions/browser/extension_system.h"
#include "extensions/common/extension_urls.h"
#if defined(OS_MACOSX)
#include "chrome/browser/ui/webui/settings_utils.h"
#endif
namespace {
const char kAdvancedFontSettingsExtensionId[] =
"caclkomlalccbpcdllchkeecicepbmbm";
} // namespace
namespace settings {
FontHandler::FontHandler(content::WebUI* webui)
: profile_(Profile::FromWebUI(webui)) {
#if defined(OS_MACOSX)
// 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)));
web_ui()->RegisterMessageCallback(
"observeAdvancedFontExtensionAvailable",
base::BindRepeating(
&FontHandler::HandleObserveAdvancedFontExtensionAvailable,
base::Unretained(this)));
web_ui()->RegisterMessageCallback(
"openAdvancedFontSettings",
base::BindRepeating(&FontHandler::HandleOpenAdvancedFontSettings,
base::Unretained(this)));
}
void FontHandler::OnJavascriptAllowed() {
extension_registry_observer_.Add(
extensions::ExtensionRegistry::Get(profile_));
}
void FontHandler::OnJavascriptDisallowed() {
extension_registry_observer_.RemoveAll();
}
void FontHandler::HandleFetchFontsData(const base::ListValue* args) {
CHECK_EQ(1U, args->GetSize());
std::string callback_id;
CHECK(args->GetString(0, &callback_id));
content::GetFontListAsync(base::Bind(&FontHandler::FontListHasLoaded,
weak_ptr_factory_.GetWeakPtr(),
callback_id));
}
void FontHandler::HandleObserveAdvancedFontExtensionAvailable(
const base::ListValue* /*args*/) {
AllowJavascript();
NotifyAdvancedFontSettingsAvailability();
}
void FontHandler::HandleOpenAdvancedFontSettings(
const base::ListValue* /*args*/) {
const extensions::Extension* extension = GetAdvancedFontSettingsExtension();
if (!extension)
return;
extensions::ExtensionTabUtil::OpenOptionsPage(
extension,
chrome::FindBrowserWithWebContents(web_ui()->GetWebContents()));
}
const extensions::Extension* FontHandler::GetAdvancedFontSettingsExtension() {
extensions::ExtensionService* service =
extensions::ExtensionSystem::Get(profile_)->extension_service();
if (!service->IsExtensionEnabled(kAdvancedFontSettingsExtensionId))
return nullptr;
extensions::ExtensionRegistry* registry =
extensions::ExtensionRegistry::Get(profile_);
return registry->GetInstalledExtension(kAdvancedFontSettingsExtensionId);
}
void FontHandler::NotifyAdvancedFontSettingsAvailability() {
FireWebUIListener("advanced-font-settings-installed",
base::Value(GetAdvancedFontSettingsExtension() != nullptr));
}
void FontHandler::OnExtensionLoaded(content::BrowserContext*,
const extensions::Extension*) {
NotifyAdvancedFontSettingsAvailability();
}
void FontHandler::OnExtensionUnloaded(content::BrowserContext*,
const extensions::Extension*,
extensions::UnloadedExtensionReason) {
NotifyAdvancedFontSettingsAvailability();
}
void FontHandler::FontListHasLoaded(std::string callback_id,
std::unique_ptr<base::ListValue> list) {
// Font list. Selects the directionality for the fonts in the given list.
for (size_t i = 0; i < list->GetSize(); i++) {
base::ListValue* font;
bool has_font = list->GetList(i, &font);
DCHECK(has_font);
base::string16 value;
bool has_value = font->GetString(1, &value);
DCHECK(has_value);
bool has_rtl_chars = base::i18n::StringContainsStrongRTLChars(value);
font->AppendString(has_rtl_chars ? "rtl" : "ltr");
}
base::DictionaryValue response;
response.Set("fontList", std::move(list));
GURL extension_url(extension_urls::GetWebstoreItemDetailURLPrefix());
response.SetString(
"extensionUrl",
extension_url.Resolve(kAdvancedFontSettingsExtensionId).spec());
ResolveJavascriptCallback(base::Value(callback_id), response);
}
} // namespace settings
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