tdesktop/Telegram/SourceFiles/boxes/language_box.cpp

153 lines
4.4 KiB
C++

/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#include "boxes/language_box.h"
#include "lang/lang_keys.h"
#include "ui/widgets/checkbox.h"
#include "ui/widgets/buttons.h"
#include "storage/localstorage.h"
#include "boxes/confirm_box.h"
#include "mainwidget.h"
#include "mainwindow.h"
#include "lang/lang_instance.h"
#include "lang/lang_cloud_manager.h"
#include "styles/style_boxes.h"
class LanguageBox::Inner : public TWidget, private base::Subscriber {
public:
Inner(QWidget *parent, not_null<Languages*> languages);
void setSelected(int index);
void refresh();
private:
void activateCurrent();
void languageChanged(int languageIndex);
not_null<Languages*> _languages;
std::shared_ptr<Ui::RadiobuttonGroup> _group;
std::vector<object_ptr<Ui::Radiobutton>> _buttons;
};
LanguageBox::Inner::Inner(QWidget *parent, not_null<Languages*> languages) : TWidget(parent)
, _languages(languages) {
_group = std::make_shared<Ui::RadiobuttonGroup>(0);
_group->setChangedCallback([this](int value) { languageChanged(value); });
subscribe(Lang::Current().updated(), [this] {
activateCurrent();
refresh();
});
}
void LanguageBox::Inner::setSelected(int index) {
_group->setValue(index);
}
void LanguageBox::Inner::refresh() {
for (auto &button : _buttons) {
button.destroy();
}
_buttons.clear();
auto y = st::boxOptionListPadding.top() + st::langsButton.margin.top();
_buttons.reserve(_languages->size());
auto index = 0;
for_const (auto &language, *_languages) {
_buttons.emplace_back(this, _group, index++, language.nativeName, st::langsButton);
auto button = _buttons.back().data();
button->moveToLeft(st::boxPadding.left() + st::boxOptionListPadding.left(), y);
button->show();
y += button->heightNoMargins() + st::boxOptionListSkip;
}
auto newHeight = y - st::boxOptionListSkip + st::boxOptionListPadding.bottom() + st::langsButton.margin.bottom();
resize(st::langsWidth, newHeight);
}
void LanguageBox::Inner::languageChanged(int languageIndex) {
Expects(languageIndex >= 0 && languageIndex < _languages->size());
activateCurrent();
auto languageId = (*_languages)[languageIndex].id;
if (Lang::Current().id() != languageId) {
// "custom" is applied each time it is passed to switchToLanguage().
// So we check that the language really has changed.
Lang::CurrentCloudManager().switchToLanguage(languageId);
}
}
void LanguageBox::Inner::activateCurrent() {
auto currentId = Lang::Current().id();
for (auto i = 0, count = _languages->size(); i != count; ++i) {
auto languageId = (*_languages)[i].id;
auto isCurrent = (languageId == currentId) || (languageId == Lang::DefaultLanguageId() && currentId.isEmpty());
if (isCurrent) {
_group->setValue(i);
return;
}
}
}
void LanguageBox::prepare() {
refreshLang();
subscribe(Lang::Current().updated(), [this] {
refreshLang();
});
_inner = setInnerWidget(object_ptr<Inner>(this, &_languages), st::boxLayerScroll);
refresh();
subscribe(Lang::CurrentCloudManager().languageListChanged(), [this] {
refresh();
});
}
void LanguageBox::refreshLang() {
clearButtons();
addButton(langFactory(lng_box_ok), [this] { closeBox(); });
setTitle(langFactory(lng_languages));
update();
}
void LanguageBox::refresh() {
refreshLanguages();
_inner->refresh();
setDimensions(st::langsWidth, qMin(_inner->height(), st::boxMaxListHeight));
}
void LanguageBox::refreshLanguages() {
_languages = Languages();
auto list = Lang::CurrentCloudManager().languageList();
_languages.reserve(list.size() + 1);
auto currentId = Lang::Current().id();
auto currentIndex = -1;
_languages.push_back({ qsl("en"), qsl("English"), qsl("English") });
for (auto &language : list) {
auto isCurrent = (language.id == currentId) || (language.id == Lang::DefaultLanguageId() && currentId.isEmpty());
if (language.id != qstr("en")) {
if (isCurrent) {
currentIndex = _languages.size();
}
_languages.push_back(language);
} else if (isCurrent) {
currentIndex = 0;
}
}
if (currentId == qstr("custom")) {
_languages.insert(_languages.begin(), { currentId, qsl("Custom LangPack"), qsl("Custom LangPack") });
currentIndex = 0;
} else if (currentIndex < 0) {
currentIndex = _languages.size();
_languages.push_back({ currentId, lang(lng_language_name), lang(lng_language_name) });
}
_inner->setSelected(currentIndex);
}