init

Telegram/SourceFiles/info/reactions_list/info_reactions_list_widget.cpp

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+/*
+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 "info/reactions_list/info_reactions_list_widget.h"
+
+#include "api/api_who_reacted.h"
+#include "boxes/peer_list_box.h"
+#include "data/data_channel.h"
+#include "history/view/reactions/history_view_reactions_list.h"
+#include "history/view/reactions/history_view_reactions_tabs.h"
+#include "info/info_controller.h"
+#include "ui/controls/who_reacted_context_action.h"
+#include "ui/widgets/scroll_area.h"
+#include "ui/ui_utility.h"
+#include "lang/lang_keys.h"
+#include "styles/style_info.h"
+
+namespace Info::ReactionsList {
+namespace {
+
+} // namespace
+
+class InnerWidget final
+	: public Ui::RpWidget
+	, private PeerListContentDelegate {
+public:
+	InnerWidget(
+		QWidget *parent,
+		not_null<Controller*> controller,
+		std::shared_ptr<Api::WhoReadList> whoReadIds,
+		FullMsgId contextId,
+		Data::ReactionId selected);
+
+	[[nodiscard]] std::shared_ptr<Api::WhoReadList> whoReadIds() const;
+	[[nodiscard]] FullMsgId contextId() const;
+	[[nodiscard]] Data::ReactionId selected() const;
+
+	rpl::producer<Ui::ScrollToRequest> scrollToRequests() const;
+
+	int desiredHeight() const;
+
+	void saveState(not_null<Memento*> memento);
+	void restoreState(not_null<Memento*> memento);
+
+protected:
+	void visibleTopBottomUpdated(
+		int visibleTop,
+		int visibleBottom) override;
+
+private:
+	using ListWidget = PeerListContent;
+
+	// PeerListContentDelegate interface
+	void peerListSetTitle(rpl::producer<QString> title) override;
+	void peerListSetAdditionalTitle(rpl::producer<QString> title) override;
+	bool peerListIsRowChecked(not_null<PeerListRow*> row) override;
+	int peerListSelectedRowsCount() override;
+	void peerListScrollToTop() override;
+	void peerListAddSelectedPeerInBunch(not_null<PeerData*> peer) override;
+	void peerListAddSelectedRowInBunch(not_null<PeerListRow*> row) override;
+	void peerListFinishSelectedRowsBunch() override;
+	void peerListSetDescription(object_ptr<Ui::FlatLabel> description) override;
+	std::shared_ptr<Main::SessionShow> peerListUiShow() override;
+
+	object_ptr<ListWidget> setupList(
+		RpWidget *parent,
+		not_null<PeerListController*> controller);
+
+	const std::shared_ptr<Main::SessionShow> _show;
+	not_null<Controller*> _controller;
+	Data::ReactionId _selected;
+	not_null<HistoryView::Reactions::Tabs*> _tabs;
+	rpl::variable<int> _tabsHeight;
+	HistoryView::Reactions::PreparedFullList _full;
+	object_ptr<ListWidget> _list;
+
+	rpl::event_stream<Ui::ScrollToRequest> _scrollToRequests;
+};
+
+InnerWidget::InnerWidget(
+	QWidget *parent,
+	not_null<Controller*> controller,
+	std::shared_ptr<Api::WhoReadList> whoReadIds,
+	FullMsgId contextId,
+	Data::ReactionId selected)
+: RpWidget(parent)
+, _show(controller->uiShow())
+, _controller(controller)
+, _selected(selected)
+, _tabs(HistoryView::Reactions::CreateReactionsTabs(
+	this,
+	controller,
+	controller->reactionsContextId(),
+	_selected,
+	controller->reactionsWhoReadIds()))
+, _tabsHeight(_tabs->heightValue())
+, _full(HistoryView::Reactions::FullListController(
+	controller,
+	controller->reactionsContextId(),
+	_selected,
+	controller->reactionsWhoReadIds()))
+, _list(setupList(this, _full.controller.get())) {
+	setContent(_list.data());
+	_full.controller->setDelegate(static_cast<PeerListDelegate*>(this));
+	_tabs->changes(
+	) | rpl::on_next([=](Data::ReactionId reaction) {
+		_selected = reaction;
+		_full.switchTab(reaction);
+	}, _list->lifetime());
+}
+
+std::shared_ptr<Api::WhoReadList> InnerWidget::whoReadIds() const {
+	return _controller->reactionsWhoReadIds();
+}
+
+FullMsgId InnerWidget::contextId() const {
+	return _controller->reactionsContextId();
+}
+
+Data::ReactionId InnerWidget::selected() const {
+	return _selected;
+}
+
+void InnerWidget::visibleTopBottomUpdated(
+		int visibleTop,
+		int visibleBottom) {
+	setChildVisibleTopBottom(_list, visibleTop, visibleBottom);
+}
+
+void InnerWidget::saveState(not_null<Memento*> memento) {
+	memento->setListState(_full.controller->saveState());
+}
+
+void InnerWidget::restoreState(not_null<Memento*> memento) {
+	_full.controller->restoreState(memento->listState());
+}
+
+rpl::producer<Ui::ScrollToRequest> InnerWidget::scrollToRequests() const {
+	return _scrollToRequests.events();
+}
+
+int InnerWidget::desiredHeight() const {
+	auto desired = 0;
+	desired += _list->fullRowsCount() * st::infoMembersList.item.height;
+	return qMax(height(), desired);
+}
+
+object_ptr<InnerWidget::ListWidget> InnerWidget::setupList(
+		RpWidget *parent,
+		not_null<PeerListController*> controller) {
+	auto result = object_ptr<ListWidget>(parent, controller);
+	const auto raw = result.data();
+
+	raw->scrollToRequests(
+	) | rpl::on_next([this](Ui::ScrollToRequest request) {
+		const auto skip = _tabsHeight.current()
+			+ st::infoCommonGroupsMargin.top();
+		auto addmin = (request.ymin < 0) ? 0 : skip;
+		auto addmax = (request.ymax < 0) ? 0 : skip;
+		_scrollToRequests.fire({
+			request.ymin + addmin,
+			request.ymax + addmax });
+	}, raw->lifetime());
+
+	_tabs->move(0, 0);
+	_tabsHeight.value() | rpl::on_next([=](int tabs) {
+		raw->moveToLeft(0, tabs + st::infoCommonGroupsMargin.top());
+	}, raw->lifetime());
+
+	parent->widthValue(
+	) | rpl::on_next([=](int newWidth) {
+		_tabs->resizeToWidth(newWidth);
+		raw->resizeToWidth(newWidth);
+	}, raw->lifetime());
+
+	rpl::combine(
+		_tabsHeight.value(),
+		raw->heightValue()
+	) | rpl::on_next([parent](int tabsHeight, int listHeight) {
+		const auto newHeight = tabsHeight
+			+ st::infoCommonGroupsMargin.top()
+			+ listHeight
+			+ st::infoCommonGroupsMargin.bottom();
+		parent->resize(parent->width(), newHeight);
+	}, result->lifetime());
+
+	return result;
+}
+
+void InnerWidget::peerListSetTitle(rpl::producer<QString> title) {
+}
+
+void InnerWidget::peerListSetAdditionalTitle(rpl::producer<QString> title) {
+}
+
+bool InnerWidget::peerListIsRowChecked(not_null<PeerListRow*> row) {
+	return false;
+}
+
+int InnerWidget::peerListSelectedRowsCount() {
+	return 0;
+}
+
+void InnerWidget::peerListScrollToTop() {
+	_scrollToRequests.fire({ -1, -1 });
+}
+
+void InnerWidget::peerListAddSelectedPeerInBunch(not_null<PeerData*> peer) {
+	Unexpected("Item selection in Info::Profile::Members.");
+}
+
+void InnerWidget::peerListAddSelectedRowInBunch(not_null<PeerListRow*> row) {
+	Unexpected("Item selection in Info::Profile::Members.");
+}
+
+void InnerWidget::peerListFinishSelectedRowsBunch() {
+}
+
+void InnerWidget::peerListSetDescription(
+		object_ptr<Ui::FlatLabel> description) {
+	description.destroy();
+}
+
+std::shared_ptr<Main::SessionShow> InnerWidget::peerListUiShow() {
+	return _show;
+}
+
+Memento::Memento(
+	std::shared_ptr<Api::WhoReadList> whoReadIds,
+	FullMsgId contextId,
+	Data::ReactionId selected)
+: ContentMemento(std::move(whoReadIds), contextId, selected) {
+}
+
+Section Memento::section() const {
+	return Section(Section::Type::ReactionsList);
+}
+
+std::shared_ptr<Api::WhoReadList> Memento::whoReadIds() const {
+	return reactionsWhoReadIds();
+}
+
+FullMsgId Memento::contextId() const {
+	return reactionsContextId();
+}
+
+Data::ReactionId Memento::selected() const {
+	return reactionsSelected();
+}
+
+object_ptr<ContentWidget> Memento::createWidget(
+		QWidget *parent,
+		not_null<Controller*> controller,
+		const QRect &geometry) {
+	auto result = object_ptr<Widget>(
+		parent,
+		controller,
+		whoReadIds(),
+		contextId(),
+		selected());
+	result->setInternalState(geometry, this);
+	return result;
+}
+
+void Memento::setListState(std::unique_ptr<PeerListState> state) {
+	_listState = std::move(state);
+}
+
+std::unique_ptr<PeerListState> Memento::listState() {
+	return std::move(_listState);
+}
+
+Memento::~Memento() = default;
+
+Widget::Widget(
+	QWidget *parent,
+	not_null<Controller*> controller,
+	std::shared_ptr<Api::WhoReadList> whoReadIds,
+	FullMsgId contextId,
+	Data::ReactionId selected)
+: ContentWidget(parent, controller) {
+	_inner = setInnerWidget(object_ptr<InnerWidget>(
+		this,
+		controller,
+		std::move(whoReadIds),
+		contextId,
+		selected));
+}
+
+rpl::producer<QString> Widget::title() {
+	const auto ids = whoReadIds();
+	const auto count = ids ? int(ids->list.size()) : 0;
+	return !count
+		? tr::lng_manage_peer_reactions()
+		: (ids->type == Ui::WhoReadType::Seen)
+		? tr::lng_context_seen_text(lt_count, rpl::single(1. * count))
+		: (ids->type == Ui::WhoReadType::Listened)
+		? tr::lng_context_seen_listened(lt_count, rpl::single(1. * count))
+		: (ids->type == Ui::WhoReadType::Watched)
+		? tr::lng_context_seen_watched(lt_count, rpl::single(1. * count))
+		: tr::lng_manage_peer_reactions();
+}
+
+std::shared_ptr<Api::WhoReadList> Widget::whoReadIds() const {
+	return _inner->whoReadIds();
+}
+
+FullMsgId Widget::contextId() const {
+	return _inner->contextId();
+}
+
+Data::ReactionId Widget::selected() const {
+	return _inner->selected();
+}
+
+bool Widget::showInternal(not_null<ContentMemento*> memento) {
+	return false;
+}
+
+void Widget::setInternalState(
+		const QRect &geometry,
+		not_null<Memento*> memento) {
+	setGeometry(geometry);
+	Ui::SendPendingMoveResizeEvents(this);
+	restoreState(memento);
+}
+
+std::shared_ptr<ContentMemento> Widget::doCreateMemento() {
+	auto result = std::make_shared<Memento>(
+		whoReadIds(),
+		contextId(),
+		selected());
+	saveState(result.get());
+	return result;
+}
+
+void Widget::saveState(not_null<Memento*> memento) {
+	memento->setScrollTop(scrollTopSave());
+	_inner->saveState(memento);
+}
+
+void Widget::restoreState(not_null<Memento*> memento) {
+	_inner->restoreState(memento);
+	scrollTopRestore(memento->scrollTop());
+}
+
+} // namespace Info::ReactionsList

Telegram/SourceFiles/info/reactions_list/info_reactions_list_widget.h

@@ -0,0 +1,82 @@
+/*
+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
+*/
+#pragma once
+
+#include "info/info_content_widget.h"
+
+class ChannelData;
+struct PeerListState;
+
+namespace Api {
+struct WhoReadList;
+} // namespace Api
+
+namespace Info::ReactionsList {
+
+class InnerWidget;
+
+class Memento final : public ContentMemento {
+public:
+	Memento(
+		std::shared_ptr<Api::WhoReadList> whoReadIds,
+		FullMsgId contextId,
+		Data::ReactionId selected);
+
+	object_ptr<ContentWidget> createWidget(
+		QWidget *parent,
+		not_null<Controller*> controller,
+		const QRect &geometry) override;
+
+	Section section() const override;
+
+	[[nodiscard]] std::shared_ptr<Api::WhoReadList> whoReadIds() const;
+	[[nodiscard]] FullMsgId contextId() const;
+	[[nodiscard]] Data::ReactionId selected() const;
+
+	void setListState(std::unique_ptr<PeerListState> state);
+	std::unique_ptr<PeerListState> listState();
+
+	~Memento();
+
+private:
+	std::unique_ptr<PeerListState> _listState;
+
+};
+
+class Widget final : public ContentWidget {
+public:
+	Widget(
+		QWidget *parent,
+		not_null<Controller*> controller,
+		std::shared_ptr<Api::WhoReadList> whoReadIds,
+		FullMsgId contextId,
+		Data::ReactionId selected);
+
+	[[nodiscard]] std::shared_ptr<Api::WhoReadList> whoReadIds() const;
+	[[nodiscard]] FullMsgId contextId() const;
+	[[nodiscard]] Data::ReactionId selected() const;
+
+	bool showInternal(
+		not_null<ContentMemento*> memento) override;
+
+	void setInternalState(
+		const QRect &geometry,
+		not_null<Memento*> memento);
+
+	rpl::producer<QString> title() override;
+
+private:
+	void saveState(not_null<Memento*> memento);
+	void restoreState(not_null<Memento*> memento);
+
+	std::shared_ptr<ContentMemento> doCreateMemento() override;
+
+	InnerWidget *_inner = nullptr;
+};
+
+} // namespace Info::ReactionsList