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