Add 'Invite via Link' button to Add Members box.

Telegram/Resources/langs/lang.strings

@@ -827,6 +827,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_profile_delete_contact" = "Delete";
 "lng_profile_set_group_photo" = "Set Photo";
 "lng_profile_add_participant" = "Add Members";
+"lng_profile_add_via_link" = "Invite via Link";
 "lng_profile_view_channel" = "View Channel";
 "lng_profile_view_discussion" = "View discussion";
 "lng_profile_join_channel" = "Join Channel";

Telegram/SourceFiles/boxes/boxes.style

@@ -906,6 +906,29 @@ pollResultsShowMore: SettingsButton(defaultSettingsButton) {
 	ripple: defaultRippleAnimation;
 }
 
+inviteViaLinkButton: SettingsButton(defaultSettingsButton) {
+	textFg: lightButtonFg;
+	textFgOver: lightButtonFgOver;
+	textBg: windowBg;
+	textBgOver: windowBgOver;
+
+	font: font(14px semibold);
+
+	height: 20px;
+	padding: margins(74px, 8px, 8px, 9px);
+
+	ripple: defaultRippleAnimation;
+}
+inviteViaLinkIcon: icon {{ "info/edit/group_manage_links", lightButtonFg }};
+inviteViaLinkIconPosition: point(23px, 2px);
+peerListWithInviteViaLink: PeerList(peerListBox) {
+	padding: margins(
+		0px,
+		0px,
+		0px,
+		membersMarginBottom);
+}
+
 scheduleHeight: 95px;
 scheduleDateTop: 38px;
 scheduleDateField: InputField(defaultInputField) {

Telegram/SourceFiles/boxes/peer_list_box.cpp

@@ -1161,11 +1161,7 @@ void PeerListContent::enterEventHook(QEvent *e) {
 
 void PeerListContent::leaveEventHook(QEvent *e) {
 	setMouseTracking(false);
-	if (_mouseSelection) {
-		setSelected(Selected());
-		_mouseSelection = false;
-		_lastMousePosition = std::nullopt;
-	}
+	mouseLeftGeometry();
 }
 
 void PeerListContent::mouseMoveEvent(QMouseEvent *e) {
@@ -1500,6 +1496,14 @@ void PeerListContent::clearSelection() {
 	setSelected(Selected());
 }
 
+void PeerListContent::mouseLeftGeometry() {
+	if (_mouseSelection) {
+		setSelected(Selected());
+		_mouseSelection = false;
+		_lastMousePosition = std::nullopt;
+	}
+}
+
 void PeerListContent::loadProfilePhotos() {
 	if (_visibleTop >= _visibleBottom) return;
 

Telegram/SourceFiles/boxes/peer_list_box.h

@@ -261,6 +261,7 @@ public:
 	virtual void peerListSetAboveWidget(object_ptr<TWidget> aboveWidget) = 0;
 	virtual void peerListSetAboveSearchWidget(object_ptr<TWidget> aboveWidget) = 0;
 	virtual void peerListSetBelowWidget(object_ptr<TWidget> belowWidget) = 0;
+	virtual void peerListMouseLeftGeometry() = 0;
 	virtual void peerListSetSearchMode(PeerListSearchMode mode) = 0;
 	virtual void peerListAppendRow(std::unique_ptr<PeerListRow> row) = 0;
 	virtual void peerListAppendSearchRow(std::unique_ptr<PeerListRow> row) = 0;
@@ -541,6 +542,8 @@ public:
 	void setHideEmpty(bool hide);
 	void refreshRows();
 
+	void mouseLeftGeometry();
+
 	void setSearchMode(PeerListSearchMode mode);
 	void changeCheckState(
 		not_null<PeerListRow*> row,
@@ -804,6 +807,9 @@ public:
 	void peerListSetSearchMode(PeerListSearchMode mode) override {
 		_content->setSearchMode(mode);
 	}
+	void peerListMouseLeftGeometry() override {
+		_content->mouseLeftGeometry();
+	}
 	void peerListSortRows(
 			Fn<bool(const PeerListRow &a, const PeerListRow &b)> compare) override {
 		_content->reorderRows([&](

Telegram/SourceFiles/boxes/peers/add_participants_box.cpp

@@ -8,6 +8,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "boxes/peers/add_participants_box.h"
 
 #include "boxes/peers/edit_participant_box.h"
+#include "boxes/peers/edit_peer_type_box.h"
 #include "boxes/confirm_box.h"
 #include "lang/lang_keys.h"
 #include "data/data_channel.h"
@@ -18,15 +19,19 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_changes.h"
 #include "history/history.h"
 #include "dialogs/dialogs_indexed_list.h"
+#include "ui/widgets/buttons.h"
+#include "ui/wrap/padding_wrap.h"
 #include "base/unixtime.h"
 #include "main/main_session.h"
 #include "mtproto/mtproto_config.h"
 #include "mainwidget.h"
 #include "mainwindow.h"
 #include "window/window_session_controller.h"
+#include "info/profile/info_profile_icon.h"
 #include "apiwrap.h"
 #include "facades.h" // Ui::showPeerHistory
 #include "app.h"
+#include "styles/style_boxes.h"
 
 namespace {
 
@@ -68,6 +73,9 @@ AddParticipantsBoxController::AddParticipantsBoxController(
 : ContactsBoxController(&peer->session())
 , _peer(peer)
 , _alreadyIn(std::move(alreadyIn)) {
+	if (needsInviteLinkButton()) {
+		setStyleOverrides(&st::peerListWithInviteViaLink);
+	}
 	subscribeToMigration();
 }
 
@@ -166,6 +174,44 @@ void AddParticipantsBoxController::updateTitle() {
 		).arg(session().serverConfig().megagroupSizeMax);
 	delegate()->peerListSetTitle(tr::lng_profile_add_participant());
 	delegate()->peerListSetAdditionalTitle(rpl::single(additional));
+
+	addInviteLinkButton();
+}
+
+bool AddParticipantsBoxController::needsInviteLinkButton() {
+	if (!_peer) {
+		return false;
+	} else if (const auto channel = _peer->asChannel()) {
+		return channel->canHaveInviteLink();
+	}
+	return _peer->asChat()->canHaveInviteLink();
+}
+
+void AddParticipantsBoxController::addInviteLinkButton() {
+	if (!needsInviteLinkButton()) {
+		return;
+	}
+	auto button = object_ptr<Ui::PaddingWrap<Ui::SettingsButton>>(
+		nullptr,
+		object_ptr<Ui::SettingsButton>(
+			nullptr,
+			tr::lng_profile_add_via_link(),
+			st::inviteViaLinkButton),
+		style::margins(0, st::membersMarginTop, 0, 0));
+	object_ptr<Info::Profile::FloatingIcon>(
+		button->entity(),
+		st::inviteViaLinkIcon,
+		st::inviteViaLinkIconPosition);
+	button->entity()->setClickedCallback([=] {
+		Ui::show(Box<EditPeerTypeBox>(_peer), Ui::LayerOption::KeepOther);
+	});
+	button->entity()->events(
+	) | rpl::filter([=](not_null<QEvent*> e) {
+		return (e->type() == QEvent::Enter);
+	}) | rpl::start_with_next([=] {
+		delegate()->peerListMouseLeftGeometry();
+	}, button->lifetime());
+	delegate()->peerListSetAboveWidget(std::move(button));
 }
 
 bool AddParticipantsBoxController::inviteSelectedUsers(

Telegram/SourceFiles/boxes/peers/add_participants_box.h

@@ -44,6 +44,7 @@ protected:
 	void prepareViewHook() override;
 	std::unique_ptr<PeerListRow> createRow(
 		not_null<UserData*> user) override;
+	virtual bool needsInviteLinkButton();
 
 private:
 	static void Start(
@@ -52,6 +53,7 @@ private:
 		base::flat_set<not_null<UserData*>> &&alreadyIn,
 		bool justCreated);
 
+	void addInviteLinkButton();
 	bool inviteSelectedUsers(not_null<PeerListBox*> box) const;
 	void subscribeToMigration();
 	int alreadyInCount() const;

Telegram/SourceFiles/boxes/peers/edit_peer_type_box.cpp

@@ -133,6 +133,8 @@ private:
 	QString inviteLinkText();
 
 	not_null<PeerData*> _peer;
+	bool _linkOnly = false;
+
 	MTP::Sender _api;
 	std::optional<Privacy> _privacySavedValue;
 	std::optional<QString> _usernameSavedValue;
@@ -158,6 +160,7 @@ Controller::Controller(
 	std::optional<Privacy> privacySavedValue,
 	std::optional<QString> usernameSavedValue)
 : _peer(peer)
+, _linkOnly(!privacySavedValue.has_value())
 , _api(&_peer->session().mtp())
 , _privacySavedValue(privacySavedValue)
 , _usernameSavedValue(usernameSavedValue)
@@ -174,12 +177,12 @@ void Controller::createContent() {
 
 	fillPrivaciesButtons(_wrap, _privacySavedValue);
 	// Skip.
-	if (_privacySavedValue) {
+	if (!_linkOnly) {
 		_wrap->add(object_ptr<Ui::BoxContentDivider>(_wrap));
 	}
 	//
 	_wrap->add(createInviteLinkBlock());
-	if (_privacySavedValue) {
+	if (!_linkOnly) {
 		_wrap->add(createUsernameEdit());
 	}
 
@@ -198,7 +201,9 @@ void Controller::createContent() {
 	//AddSkip(_wrap.get());
 	//AddDividerText(_wrap.get(), tr::lng_group_invite_manage_about());
 
-	if (_controls.privacy) {
+	if (_linkOnly) {
+		_controls.inviteLinkWrap->show(anim::type::instant);
+	} else {
 		if (_controls.privacy->value() == Privacy::NoUsername) {
 			checkUsernameAvailability();
 		}
@@ -209,8 +214,6 @@ void Controller::createContent() {
 		_controls.usernameWrap->toggle(
 			(forShowing == Privacy::HasUsername),
 			anim::type::instant);
-	} else {
-		_controls.inviteLinkWrap->show(anim::type::instant);
 	}
 }
 
@@ -248,7 +251,7 @@ void Controller::fillPrivaciesButtons(
 		}
 		Unexpected("Peer type in Controller::createPrivaciesEdit.");
 	}();
-	if (!canEditUsername) {
+	if (!canEditUsername || _linkOnly) {
 		return;
 	}
 

Telegram/SourceFiles/boxes/single_choice_box.h

@@ -22,7 +22,7 @@ struct SingleChoiceBoxArgs {
 	required<rpl::producer<QString>> title;
 	const std::vector<QString> &options;
 	int initialSelection = 0;
-	required<Fn<void(int)>> callback;
+	Fn<void(int)> callback;
 	const style::Checkbox *st = nullptr;
 	const style::Radio *radioSt = nullptr;
 };

Telegram/SourceFiles/calls/calls_group_panel.cpp

@@ -99,6 +99,10 @@ private:
 	std::unique_ptr<PeerListRow> createRow(
 		not_null<UserData*> user) override;
 
+	bool needsInviteLinkButton() override {
+		return false;
+	}
+
 	const not_null<const base::flat_set<not_null<UserData*>>*> _inGroup;
 	rpl::producer<not_null<UserData*>> _discoveredInGroup;