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// Copyright (c) 2012 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/options2/font_settings_handler.h"
#include <string>
#include "base/basictypes.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/i18n/rtl.h"
#include "base/string_number_conversions.h"
#include "base/string_util.h"
#include "base/values.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/character_encoding.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/webui/options2/font_settings_utils.h"
#include "chrome/common/chrome_notification_types.h"
#include "chrome/common/pref_names.h"
#include "content/public/browser/font_list_async.h"
#include "content/public/browser/notification_details.h"
#include "content/public/browser/web_ui.h"
#include "grit/chromium_strings.h"
#include "grit/generated_resources.h"
#include "ui/base/l10n/l10n_util.h"
#if defined(OS_WIN)
#include "ui/gfx/font.h"
#include "ui/gfx/platform_font_win.h"
#endif
namespace {
// Returns the localized name of a font so that settings can find it within the
// list of system fonts. On Windows, the list of system fonts has names only
// for the system locale, but the pref value may be in the English name.
std::string MaybeGetLocalizedFontName(const std::string& font_name) {
#if defined(OS_WIN)
gfx::Font font(font_name, 12); // dummy font size
return static_cast<gfx::PlatformFontWin*>(font.platform_font())->
GetLocalizedFontName();
#else
return font_name;
#endif
}
} // namespace
namespace options2 {
FontSettingsHandler::FontSettingsHandler() {
}
FontSettingsHandler::~FontSettingsHandler() {
}
void FontSettingsHandler::GetLocalizedValues(
DictionaryValue* localized_strings) {
DCHECK(localized_strings);
static OptionsStringResource resources[] = {
{ "fontSettingsStandard",
IDS_FONT_LANGUAGE_SETTING_FONT_SELECTOR_STANDARD_LABEL },
{ "fontSettingsSerif",
IDS_FONT_LANGUAGE_SETTING_FONT_SELECTOR_SERIF_LABEL },
{ "fontSettingsSansSerif",
IDS_FONT_LANGUAGE_SETTING_FONT_SELECTOR_SANS_SERIF_LABEL },
{ "fontSettingsFixedWidth",
IDS_FONT_LANGUAGE_SETTING_FONT_SELECTOR_FIXED_WIDTH_LABEL },
{ "fontSettingsMinimumSize",
IDS_FONT_LANGUAGE_SETTING_MINIMUM_FONT_SIZE_TITLE },
{ "fontSettingsEncoding",
IDS_FONT_LANGUAGE_SETTING_FONT_SUB_DIALOG_ENCODING_TITLE },
{ "fontSettingsSizeTiny",
IDS_FONT_LANGUAGE_SETTING_FONT_SIZE_TINY },
{ "fontSettingsSizeHuge",
IDS_FONT_LANGUAGE_SETTING_FONT_SIZE_HUGE },
{ "fontSettingsLoremIpsum",
IDS_FONT_LANGUAGE_SETTING_LOREM_IPSUM },
};
RegisterStrings(localized_strings, resources, arraysize(resources));
RegisterTitle(localized_strings, "fontSettingsPage",
IDS_FONT_LANGUAGE_SETTING_FONT_TAB_TITLE);
localized_strings->SetString("fontSettingsPlaceholder",
l10n_util::GetStringUTF16(
IDS_FONT_LANGUAGE_SETTING_PLACEHOLDER));
}
void FontSettingsHandler::InitializePage() {
DCHECK(web_ui());
SetUpStandardFontSample();
SetUpSerifFontSample();
SetUpSansSerifFontSample();
SetUpFixedFontSample();
SetUpMinimumFontSample();
}
void FontSettingsHandler::RegisterMessages() {
// Perform validation for saved fonts.
PrefService* pref_service = Profile::FromWebUI(web_ui())->GetPrefs();
FontSettingsUtilities::ValidateSavedFonts(pref_service);
// Register for preferences that we need to observe manually.
standard_font_.Init(prefs::kWebKitStandardFontFamily, pref_service, this);
serif_font_.Init(prefs::kWebKitSerifFontFamily, pref_service, this);
sans_serif_font_.Init(prefs::kWebKitSansSerifFontFamily, pref_service, this);
fixed_font_.Init(prefs::kWebKitFixedFontFamily, pref_service, this);
font_encoding_.Init(prefs::kDefaultCharset, pref_service, this);
default_font_size_.Init(prefs::kWebKitDefaultFontSize, pref_service, this);
default_fixed_font_size_.Init(prefs::kWebKitDefaultFixedFontSize,
pref_service, this);
minimum_font_size_.Init(prefs::kWebKitMinimumFontSize, pref_service, this);
web_ui()->RegisterMessageCallback("fetchFontsData",
base::Bind(&FontSettingsHandler::HandleFetchFontsData,
base::Unretained(this)));
}
void FontSettingsHandler::HandleFetchFontsData(const ListValue* args) {
content::GetFontListAsync(
base::Bind(&FontSettingsHandler::FontsListHasLoaded,
base::Unretained(this)));
}
void FontSettingsHandler::FontsListHasLoaded(
scoped_ptr<base::ListValue> list) {
// Selects the directionality for the fonts in the given list.
for (size_t i = 0; i < list->GetSize(); i++) {
ListValue* font;
bool has_font = list->GetList(i, &font);
DCHECK(has_font);
string16 value;
bool has_value = font->GetString(1, &value);
DCHECK(has_value);
bool has_rtl_chars = base::i18n::StringContainsStrongRTLChars(value);
font->Append(Value::CreateStringValue(has_rtl_chars ? "rtl" : "ltr"));
}
ListValue encoding_list;
const std::vector<CharacterEncoding::EncodingInfo>* encodings;
PrefService* pref_service = Profile::FromWebUI(web_ui())->GetPrefs();
encodings = CharacterEncoding::GetCurrentDisplayEncodings(
g_browser_process->GetApplicationLocale(),
pref_service->GetString(prefs::kStaticEncodings),
pref_service->GetString(prefs::kRecentlySelectedEncoding));
DCHECK(encodings);
DCHECK(!encodings->empty());
std::vector<CharacterEncoding::EncodingInfo>::const_iterator it;
for (it = encodings->begin(); it != encodings->end(); ++it) {
ListValue* option = new ListValue();
if (it->encoding_id) {
int cmd_id = it->encoding_id;
std::string encoding =
CharacterEncoding::GetCanonicalEncodingNameByCommandId(cmd_id);
string16 name = it->encoding_display_name;
bool has_rtl_chars = base::i18n::StringContainsStrongRTLChars(name);
option->Append(Value::CreateStringValue(encoding));
option->Append(Value::CreateStringValue(name));
option->Append(Value::CreateStringValue(has_rtl_chars ? "rtl" : "ltr"));
} else {
// Add empty name/value to indicate a separator item.
option->Append(Value::CreateStringValue(""));
option->Append(Value::CreateStringValue(""));
}
encoding_list.Append(option);
}
ListValue selected_values;
selected_values.Append(Value::CreateStringValue(MaybeGetLocalizedFontName(
standard_font_.GetValue())));
selected_values.Append(Value::CreateStringValue(MaybeGetLocalizedFontName(
serif_font_.GetValue())));
selected_values.Append(Value::CreateStringValue(MaybeGetLocalizedFontName(
sans_serif_font_.GetValue())));
selected_values.Append(Value::CreateStringValue(MaybeGetLocalizedFontName(
fixed_font_.GetValue())));
selected_values.Append(Value::CreateStringValue(font_encoding_.GetValue()));
web_ui()->CallJavascriptFunction("FontSettings.setFontsData",
*list.get(), encoding_list,
selected_values);
}
void FontSettingsHandler::Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
if (type == chrome::NOTIFICATION_PREF_CHANGED) {
std::string* pref_name = content::Details<std::string>(details).ptr();
if (*pref_name == prefs::kWebKitStandardFontFamily) {
SetUpStandardFontSample();
} else if (*pref_name == prefs::kWebKitSerifFontFamily) {
SetUpSerifFontSample();
} else if (*pref_name == prefs::kWebKitSansSerifFontFamily) {
SetUpSansSerifFontSample();
} else if (*pref_name == prefs::kWebKitFixedFontFamily ||
*pref_name == prefs::kWebKitDefaultFixedFontSize) {
SetUpFixedFontSample();
} else if (*pref_name == prefs::kWebKitDefaultFontSize) {
SetUpStandardFontSample();
SetUpSerifFontSample();
SetUpSansSerifFontSample();
} else if (*pref_name == prefs::kWebKitMinimumFontSize) {
SetUpMinimumFontSample();
}
}
}
void FontSettingsHandler::SetUpStandardFontSample() {
base::StringValue font_value(standard_font_.GetValue());
base::FundamentalValue size_value(default_font_size_.GetValue());
web_ui()->CallJavascriptFunction(
"FontSettings.setUpStandardFontSample", font_value, size_value);
}
void FontSettingsHandler::SetUpSerifFontSample() {
base::StringValue font_value(serif_font_.GetValue());
base::FundamentalValue size_value(default_font_size_.GetValue());
web_ui()->CallJavascriptFunction(
"FontSettings.setUpSerifFontSample", font_value, size_value);
}
void FontSettingsHandler::SetUpSansSerifFontSample() {
base::StringValue font_value(sans_serif_font_.GetValue());
base::FundamentalValue size_value(default_font_size_.GetValue());
web_ui()->CallJavascriptFunction(
"FontSettings.setUpSansSerifFontSample", font_value, size_value);
}
void FontSettingsHandler::SetUpFixedFontSample() {
base::StringValue font_value(fixed_font_.GetValue());
base::FundamentalValue size_value(default_fixed_font_size_.GetValue());
web_ui()->CallJavascriptFunction(
"FontSettings.setUpFixedFontSample", font_value, size_value);
}
void FontSettingsHandler::SetUpMinimumFontSample() {
base::FundamentalValue size_value(minimum_font_size_.GetValue());
web_ui()->CallJavascriptFunction("FontSettings.setUpMinimumFontSample",
size_value);
}
} // namespace options2
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