Add EditPeerInfoBox without saving.

Telegram/Resources/langs/lang.strings

@@ -825,6 +825,7 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 
 "lng_group_invite_create" = "Create an invite link";
 "lng_group_invite_about" = "Telegram users will be able to join\nyour group by following this link.";
+"lng_group_invite_about_channel" = "Telegram users will be able to join\nyour channel by following this link.";
 "lng_group_invite_create_new" = "Revoke invite link";
 "lng_group_invite_about_new" = "Your previous link will be deactivated and we'll generate a new invite link for you.";
 "lng_group_invite_copied" = "Invite link copied to clipboard.";

Telegram/SourceFiles/base/lambda_guard.h

@@ -78,7 +78,7 @@ public:
 	Return operator()(OtherArgs &&...args) {
 		return _guard
 			? _callable(std::forward<OtherArgs>(args)...)
-			: Return{};
+			: Return();
 	}
 
 	template <
@@ -87,7 +87,7 @@ public:
 	Return operator()(OtherArgs &&...args) const {
 		return _guard
 			? _callable(std::forward<OtherArgs>(args)...)
-			: Return{};
+			: Return();
 	}
 
 private:

Telegram/SourceFiles/boxes/boxes.style

@@ -126,7 +126,7 @@ boxMediumSkip: 20px;
 boxButtonPadding: margins(8px, 12px, 13px, 12px);
 boxLayerButtonPadding: margins(8px, 8px, 8px, 8px);
 boxLabel: FlatLabel(defaultFlatLabel) {
-	width: 285px;
+	minWidth: 285px;
 	align: align(topleft);
 	style: boxLabelStyle;
 }
@@ -159,7 +159,7 @@ cropMinSize: 20px;
 
 confirmInviteTitle: FlatLabel(defaultFlatLabel) {
 	align: align(center);
-	width: 320px;
+	minWidth: 320px;
 	maxHeight: 24px;
 	textFg: windowBoldFg;
 	style: TextStyle(defaultTextStyle) {
@@ -170,7 +170,7 @@ confirmInviteTitle: FlatLabel(defaultFlatLabel) {
 }
 confirmInviteStatus: FlatLabel(boxLabel) {
 	align: align(center);
-	width: 320px;
+	minWidth: 320px;
 	maxHeight: 20px;
 	textFg: windowSubTextFg;
 }
@@ -183,13 +183,13 @@ confirmInviteUserPhotoSize: 56px;
 confirmInviteUserPhotoTop: 166px;
 confirmInviteUserName: FlatLabel(defaultFlatLabel) {
 	align: align(center);
-	width: 66px;
+	minWidth: 66px;
 	maxHeight: 20px;
 }
 confirmInviteUserNameTop: 227px;
 
 confirmPhoneAboutLabel: FlatLabel(defaultFlatLabel) {
-	width: 282px;
+	minWidth: 282px;
 }
 confirmPhoneCodeField: InputField(defaultInputField) {
 }
@@ -199,7 +199,7 @@ revokePublicLinkStatusPalette: TextPalette(defaultTextPalette) {
 }
 aboutRevokePublicLabel: FlatLabel(defaultFlatLabel) {
 	align: align(topleft);
-	width: 320px;
+	minWidth: 320px;
 }
 editBioCountdownLabel: FlatLabel(defaultFlatLabel) {
 	style: boxTextStyle;
@@ -394,7 +394,7 @@ notificationSampleSize: size(64px, 16px);
 
 membersAboutLimitPadding: margins(0px, 12px, 0px, 12px);
 membersAbout: FlatLabel(defaultFlatLabel) {
-	width: 332px;
+	minWidth: 332px;
 	textFg: membersAboutLimitFg;
 	align: align(top);
 	style: boxLabelStyle;
@@ -490,7 +490,7 @@ aboutVersionLink: LinkButton(defaultLinkButton) {
 aboutTextTop: 34px;
 aboutSkip: 14px;
 aboutLabel: FlatLabel(defaultFlatLabel) {
-	width: 330px;
+	minWidth: 330px;
 	align: align(topleft);
 	style: TextStyle(defaultTextStyle) {
 		lineHeight: 22px;
@@ -601,7 +601,7 @@ editPrivacyOptionMargin: margins(23px, 14px, 21px, 0px);
 editPrivacyPadding: margins(23px, 0px, 21px, 0px);
 editPrivacyWarningPadding: margins(23px, 14px, 21px, 0px);
 editPrivacyTitle: FlatLabel(defaultFlatLabel) {
-	width: 320px;
+	minWidth: 320px;
 	textFg: boxTitleFg;
 	maxHeight: 56px;
 	style: TextStyle(defaultTextStyle) {
@@ -612,7 +612,7 @@ editPrivacyTitle: FlatLabel(defaultFlatLabel) {
 }
 editPrivacyTitlePadding: margins(23px, 20px, 21px, 13px);
 editPrivacyLabel: FlatLabel(defaultFlatLabel) {
-	width: 320px;
+	minWidth: 320px;
 	textFg: membersAboutLimitFg;
 	style: defaultTextStyle;
 }
@@ -624,13 +624,13 @@ changePhoneIcon: icon {
 	{ "phone_simcard_to", changePhoneSimcardTo, point(78px, 0px) }
 };
 changePhoneDescription: FlatLabel(boxLabel) {
-	width: 332px;
+	minWidth: 332px;
 	align: align(top);
 }
 changePhoneIconTop: 20px;
 changePhoneDescriptionTop: 96px;
 changePhoneLabel: FlatLabel(defaultFlatLabel) {
-	width: 275px;
+	minWidth: 275px;
 	textFg: windowSubTextFg;
 }
 changePhoneError: FlatLabel(changePhoneLabel) {
@@ -695,7 +695,7 @@ mutePhotoButton: PeerAvatarButton {
 	photoSize: 40px;
 }
 muteChatTitle: FlatLabel(boxLabel) {
-	width: 235px;
+	minWidth: 235px;
 	maxHeight: 20px;  // block word wrap
 	style: TextStyle(boxTextStyle) {
 		font: font(boxFontSize semibold);

Telegram/SourceFiles/boxes/peers/edit_peer_info_box.cpp

@@ -0,0 +1,970 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop version of Telegram messaging app, see https://telegram.org
+
+Telegram Desktop is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+It is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+In addition, as a special exception, the copyright holders give permission
+to link the code of portions of this program with the OpenSSL library.
+
+Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
+Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
+*/
+#include "boxes/peers/edit_peer_info_box.h"
+
+#include <rpl/range.h>
+#include <rpl/flatten_latest.h>
+#include "info/profile/info_profile_button.h"
+#include "ui/wrap/vertical_layout.h"
+#include "ui/wrap/padding_wrap.h"
+#include "ui/wrap/slide_wrap.h"
+#include "ui/widgets/input_fields.h"
+#include "ui/widgets/checkbox.h"
+#include "ui/widgets/labels.h"
+#include "ui/toast/toast.h"
+#include "ui/special_buttons.h"
+#include "boxes/confirm_box.h"
+#include "boxes/photo_crop_box.h"
+#include "boxes/add_contact_box.h"
+#include "mtproto/sender.h"
+#include "lang/lang_keys.h"
+#include "core/file_utilities.h"
+#include "mainwidget.h"
+#include "apiwrap.h"
+#include "application.h"
+#include "auth_session.h"
+#include "observer_peer.h"
+#include "styles/style_boxes.h"
+#include "styles/style_info.h"
+
+namespace {
+
+constexpr auto kUsernameCheckTimeout = TimeMs(200);
+
+class Controller
+	: private MTP::Sender
+	, private base::enable_weak_from_this {
+public:
+	Controller(
+		not_null<BoxContent*> box,
+		not_null<ChannelData*> channel);
+
+	object_ptr<Ui::VerticalLayout> createContent();
+	void setFocus();
+
+private:
+	enum class Privacy {
+		Public,
+		Private,
+	};
+	enum class Invites {
+		Everyone,
+		OnlyAdmins,
+	};
+	enum class UsernameState {
+		Normal,
+		TooMany,
+		NotAvailable,
+	};
+	struct Controls {
+		Ui::InputField *title = nullptr;
+		Ui::InputArea *description = nullptr;
+		Ui::NewAvatarButton *photo = nullptr;
+		rpl::lifetime initialPhotoImageWaiting;
+
+		std::shared_ptr<Ui::RadioenumGroup<Privacy>> privacy;
+		Ui::SlideWrap<Ui::RpWidget> *usernameWrap = nullptr;
+		Ui::UsernameInput *username = nullptr;
+		base::unique_qptr<Ui::FlatLabel> usernameResult;
+		const style::FlatLabel *usernameResultStyle = nullptr;
+
+		Ui::SlideWrap<Ui::RpWidget> *createInviteLinkWrap = nullptr;
+		Ui::SlideWrap<Ui::RpWidget> *editInviteLinkWrap = nullptr;
+		Ui::FlatLabel *inviteLink = nullptr;
+
+		std::shared_ptr<Ui::RadioenumGroup<Invites>> invites;
+		Ui::Checkbox *signatures = nullptr;
+	};
+
+	base::lambda<QString()> computeTitle() const;
+	object_ptr<Ui::RpWidget> createPhotoAndTitleEdit();
+	object_ptr<Ui::RpWidget> createTitleEdit();
+	object_ptr<Ui::RpWidget> createPhotoEdit();
+	object_ptr<Ui::RpWidget> createDescriptionEdit();
+	object_ptr<Ui::RpWidget> createPrivaciesEdit();
+	object_ptr<Ui::RpWidget> createUsernameEdit();
+	object_ptr<Ui::RpWidget> createInviteLinkCreate();
+	object_ptr<Ui::RpWidget> createInviteLinkEdit();
+	object_ptr<Ui::RpWidget> createSignaturesEdit();
+	object_ptr<Ui::RpWidget> createInvitesEdit();
+	object_ptr<Ui::RpWidget> createDeleteButton();
+
+	void refreshInitialPhotoImage();
+	void submitTitle();
+	void submitDescription();
+	void save();
+	void deleteWithConfirmation();
+	void choosePhotoDelayed();
+	void choosePhoto();
+	void suggestPhotoFile(
+		const FileDialog::OpenResult &result);
+	void suggestPhoto(const QImage &image);
+	void privacyChanged(Privacy value);
+
+	void checkUsernameAvailability();
+	void askUsernameRevoke();
+	void usernameChanged();
+	void showUsernameError(rpl::producer<QString> &&error);
+	void showUsernameGood();
+	void showUsernameResult(
+		rpl::producer<QString> &&text,
+		not_null<const style::FlatLabel*> st);
+
+	bool canEditInviteLink() const;
+	bool inviteLinkShown() const;
+	void refreshEditInviteLink();
+	void refreshCreateInviteLink();
+	void createInviteLink();
+	void revokeInviteLink();
+	void exportInviteLink(const QString &confirmation);
+
+	not_null<BoxContent*> _box;
+	not_null<ChannelData*> _channel;
+	bool _isGroup;
+
+	base::unique_qptr<Ui::VerticalLayout> _wrap;
+	Controls _controls;
+	base::Timer _checkUsernameTimer;
+	mtpRequestId _checkUsernameRequestId = 0;
+	UsernameState _usernameState = UsernameState::Normal;
+	rpl::event_stream<rpl::producer<QString>> _usernameResultTexts;
+
+};
+
+Controller::Controller(
+	not_null<BoxContent*> box,
+	not_null<ChannelData*> channel)
+: _box(box)
+, _channel(channel)
+, _isGroup(_channel->isMegagroup())
+, _checkUsernameTimer([this] { checkUsernameAvailability(); }) {
+	_box->setTitle(computeTitle());
+	_box->addButton(langFactory(lng_settings_save), [this] {
+		save();
+	});
+	_box->addButton(langFactory(lng_cancel), [this] {
+		_box->closeBox();
+	});
+}
+
+base::lambda<QString()> Controller::computeTitle() const {
+	return langFactory(_isGroup
+			? lng_edit_group
+			: lng_edit_channel_title);
+}
+
+object_ptr<Ui::VerticalLayout> Controller::createContent() {
+	auto result = object_ptr<Ui::VerticalLayout>(_box);
+	_wrap.reset(result.data());
+	_controls = Controls();
+
+	_wrap->add(createPhotoAndTitleEdit());
+	_wrap->add(createDescriptionEdit());
+	_wrap->add(createPrivaciesEdit());
+	_wrap->add(createInviteLinkCreate());
+	_wrap->add(createInviteLinkEdit());
+	_wrap->add(createSignaturesEdit());
+	_wrap->add(createInvitesEdit());
+	_wrap->add(createDeleteButton());
+
+	_wrap->resizeToWidth(st::boxWideWidth);
+
+	return result;
+}
+
+void Controller::setFocus() {
+	if (_controls.title) {
+		_controls.title->setFocusFast();
+	}
+}
+
+object_ptr<Ui::RpWidget> Controller::createPhotoAndTitleEdit() {
+	Expects(_wrap != nullptr);
+
+	if (!_channel->canEditInformation()) {
+		return nullptr;
+	}
+
+	auto result = object_ptr<Ui::RpWidget>(_wrap);
+	auto container = result.data();
+
+	auto photoWrap = Ui::AttachParentChild(
+		container,
+		createPhotoEdit());
+	auto titleEdit = Ui::AttachParentChild(
+		container,
+		createTitleEdit());
+	photoWrap->heightValue()
+		| rpl::start_with_next([container](int height) {
+			container->resize(container->width(), height);
+		}, photoWrap->lifetime());
+	container->widthValue()
+		| rpl::start_with_next([titleEdit](int width) {
+			auto left = st::editPeerPhotoMargins.left()
+				+ st::editPeerPhotoSize;
+			titleEdit->resizeToWidth(width - left);
+			titleEdit->moveToLeft(left, 0, width);
+		}, titleEdit->lifetime());
+
+	return result;
+}
+
+object_ptr<Ui::RpWidget> Controller::createPhotoEdit() {
+	Expects(_wrap != nullptr);
+
+	using PhotoWrap = Ui::PaddingWrap<Ui::NewAvatarButton>;
+	auto photoWrap = object_ptr<PhotoWrap>(
+		_wrap,
+		object_ptr<Ui::NewAvatarButton>(
+			_wrap,
+			st::editPeerPhotoSize,
+			st::editPeerPhotoIconPosition),
+		st::editPeerPhotoMargins);
+	_controls.photo = photoWrap->entity();
+	_controls.photo->addClickHandler([this] { choosePhotoDelayed(); });
+
+	_controls.initialPhotoImageWaiting = base::ObservableViewer(
+		Auth().downloaderTaskFinished())
+		| rpl::start_with_next([=] {
+			refreshInitialPhotoImage();
+		});
+	refreshInitialPhotoImage();
+
+	return photoWrap;
+}
+
+void Controller::refreshInitialPhotoImage() {
+	if (auto image = _channel->currentUserpic()) {
+		image->load();
+		if (image->loaded()) {
+			_controls.photo->setImage(image->pixNoCache(
+				st::editPeerPhotoSize * cIntRetinaFactor(),
+				st::editPeerPhotoSize * cIntRetinaFactor(),
+				Images::Option::Smooth).toImage());
+			_controls.initialPhotoImageWaiting.destroy();
+		}
+	} else {
+		_controls.initialPhotoImageWaiting.destroy();
+	}
+}
+
+object_ptr<Ui::RpWidget> Controller::createTitleEdit() {
+	Expects(_wrap != nullptr);
+
+	auto result = object_ptr<Ui::PaddingWrap<Ui::InputField>>(
+		_wrap,
+		object_ptr<Ui::InputField>(
+			_wrap,
+			st::defaultInputField,
+			langFactory(_isGroup
+				? lng_dlg_new_group_name
+				: lng_dlg_new_channel_name),
+			_channel->name),
+		st::editPeerTitleMargins);
+
+	QObject::connect(
+		result->entity(),
+		&Ui::InputField::submitted,
+		[this] { submitTitle(); });
+
+	_controls.title = result->entity();
+	return std::move(result);
+}
+
+object_ptr<Ui::RpWidget> Controller::createDescriptionEdit() {
+	Expects(_wrap != nullptr);
+
+	auto result = object_ptr<Ui::PaddingWrap<Ui::InputArea>>(
+		_wrap,
+		object_ptr<Ui::InputArea>(
+			_wrap,
+			st::editPeerDescription,
+			langFactory(lng_create_group_description),
+			_channel->about()),
+		st::editPeerDescriptionMargins);
+
+	QObject::connect(
+		result->entity(),
+		&Ui::InputArea::submitted,
+		[this] { submitDescription(); });
+
+	_controls.description = result->entity();
+	return std::move(result);
+}
+
+object_ptr<Ui::RpWidget> Controller::createPrivaciesEdit() {
+	Expects(_wrap != nullptr);
+
+	if (!_channel->canEditUsername()) {
+		return nullptr;
+	}
+	auto result = object_ptr<Ui::PaddingWrap<Ui::VerticalLayout>>(
+		_wrap,
+		object_ptr<Ui::VerticalLayout>(_wrap),
+		st::editPeerPrivaciesMargins);
+	auto container = result->entity();
+
+	_controls.privacy = std::make_shared<Ui::RadioenumGroup<Privacy>>(
+		_channel->isPublic() ? Privacy::Public : Privacy::Private);
+	auto addButton = [&](
+			Privacy value,
+			LangKey groupTextKey,
+			LangKey channelTextKey,
+			LangKey groupAboutKey,
+			LangKey channelAboutKey) {
+		container->add(object_ptr<Ui::FixedHeightWidget>(
+			container,
+			st::editPeerPrivacyTopSkip));
+		container->add(object_ptr<Ui::Radioenum<Privacy>>(
+			container,
+			_controls.privacy,
+			value,
+			lang(_isGroup ? groupTextKey : channelTextKey),
+			st::defaultBoxCheckbox));
+		container->add(object_ptr<Ui::PaddingWrap<Ui::FlatLabel>>(
+			container,
+			object_ptr<Ui::FlatLabel>(
+				container,
+				Lang::Viewer(_isGroup ? groupAboutKey : channelAboutKey),
+				st::editPeerPrivacyLabel),
+			st::editPeerPrivacyLabelMargins));
+		container->add(object_ptr<Ui::FixedHeightWidget>(
+			container,
+			st::editPeerPrivacyBottomSkip));
+	};
+	addButton(
+		Privacy::Public,
+		lng_create_public_group_title,
+		lng_create_public_channel_title,
+		lng_create_public_group_about,
+		lng_create_public_channel_about);
+	addButton(
+		Privacy::Private,
+		lng_create_private_group_title,
+		lng_create_private_channel_title,
+		lng_create_private_group_about,
+		lng_create_private_channel_about);
+	container->add(createUsernameEdit());
+
+	_controls.privacy->setChangedCallback([this](Privacy value) {
+		privacyChanged(value);
+	});
+	if (!_channel->isPublic()) {
+		checkUsernameAvailability();
+	}
+
+	return std::move(result);
+}
+
+object_ptr<Ui::RpWidget> Controller::createUsernameEdit() {
+	auto result = object_ptr<Ui::SlideWrap<Ui::VerticalLayout>>(
+		_wrap,
+		object_ptr<Ui::VerticalLayout>(_wrap),
+		st::editPeerUsernameMargins);
+	_controls.usernameWrap = result.data();
+
+	auto container = result->entity();
+	container->add(object_ptr<Ui::FlatLabel>(
+		container,
+		Lang::Viewer(lng_create_group_link),
+		st::editPeerSectionLabel));
+	auto placeholder = container->add(object_ptr<Ui::RpWidget>(
+		container));
+	placeholder->setAttribute(Qt::WA_TransparentForMouseEvents);
+	_controls.username = Ui::AttachParentChild(
+		container,
+		object_ptr<Ui::UsernameInput>(
+			container,
+			st::setupChannelLink,
+			base::lambda<QString()>(),
+			_channel->username,
+			true));
+	_controls.username->heightValue()
+		| rpl::start_with_next([placeholder](int height) {
+			placeholder->resize(placeholder->width(), height);
+		}, placeholder->lifetime());
+	placeholder->widthValue()
+		| rpl::start_with_next([this](int width) {
+			_controls.username->resize(
+				width,
+				_controls.username->height());
+		}, placeholder->lifetime());
+	_controls.username->move(placeholder->pos());
+
+	QObject::connect(
+		_controls.username,
+		&Ui::UsernameInput::changed,
+		[this] { usernameChanged(); });
+
+	auto shown = (_controls.privacy->value() == Privacy::Public);
+	result->toggle(shown, anim::type::instant);
+
+	return std::move(result);
+}
+
+void Controller::privacyChanged(Privacy value) {
+	auto toggleEditUsername = [&] {
+		_controls.usernameWrap->toggle(
+			(value == Privacy::Public),
+			anim::type::instant);
+	};
+	auto refreshVisibilities = [&] {
+		// First we need to show everything, then hide anything.
+		// Otherwise the scroll position could jump up undesirably.
+
+		if (value == Privacy::Public) {
+			toggleEditUsername();
+		}
+		refreshCreateInviteLink();
+		refreshEditInviteLink();
+		if (value == Privacy::Public) {
+			_controls.usernameResult = nullptr;
+			checkUsernameAvailability();
+		} else {
+			toggleEditUsername();
+		}
+	};
+	if (value == Privacy::Public) {
+		if (_usernameState == UsernameState::TooMany) {
+			askUsernameRevoke();
+			return;
+		} else if (_usernameState == UsernameState::NotAvailable) {
+			_controls.privacy->setValue(Privacy::Private);
+			return;
+		}
+		refreshVisibilities();
+		_controls.username->setDisplayFocused(true);
+		_controls.username->setFocus();
+	} else {
+		request(base::take(_checkUsernameRequestId)).cancel();
+		_checkUsernameTimer.cancel();
+		refreshVisibilities();
+		setFocus();
+	}
+}
+
+void Controller::checkUsernameAvailability() {
+	if (!_controls.username) {
+		return;
+	}
+	auto initial = (_controls.privacy->value() != Privacy::Public);
+	auto checking = initial
+		? qsl(".bad.")
+		: _controls.username->getLastText().trimmed();
+	if (checking.size() < MinUsernameLength) {
+		return;
+	}
+	if (_checkUsernameRequestId) {
+		request(_checkUsernameRequestId).cancel();
+	}
+	_checkUsernameRequestId = request(MTPchannels_CheckUsername(
+		_channel->inputChannel,
+		MTP_string(checking)
+	)).done([=](const MTPBool &result) {
+		_checkUsernameRequestId = 0;
+		if (initial) {
+			return;
+		}
+		if (!mtpIsTrue(result) && checking != _channel->username) {
+			showUsernameError(
+				Lang::Viewer(lng_create_channel_link_occupied));
+		} else {
+			showUsernameGood();
+		}
+	}).fail([=](const RPCError &error) {
+		_checkUsernameRequestId = 0;
+		auto type = error.type();
+		_usernameState = UsernameState::Normal;
+		if (type == qstr("CHANNEL_PUBLIC_GROUP_NA")) {
+			_usernameState = UsernameState::NotAvailable;
+			_controls.privacy->setValue(Privacy::Private);
+		} else if (rand() % 10 < 2 || type == qstr("CHANNELS_ADMIN_PUBLIC_TOO_MUCH")) {
+			_usernameState = UsernameState::TooMany;
+			if (_controls.privacy->value() == Privacy::Public) {
+				askUsernameRevoke();
+			}
+		} else if (initial) {
+			if (_controls.privacy->value() == Privacy::Public) {
+				_controls.usernameResult = nullptr;
+				_controls.username->setFocus();
+			}
+		} else if (type == qstr("USERNAME_INVALID")) {
+			showUsernameError(
+				Lang::Viewer(lng_create_channel_link_invalid));
+		} else if (type == qstr("USERNAME_OCCUPIED")
+			&& checking != _channel->username) {
+			showUsernameError(
+				Lang::Viewer(lng_create_channel_link_occupied));
+		}
+	}).send();
+}
+
+void Controller::askUsernameRevoke() {
+	_controls.privacy->setValue(Privacy::Private);
+	auto revokeCallback = base::lambda_guarded(this, [this] {
+		_usernameState = UsernameState::Normal;
+		_controls.privacy->setValue(Privacy::Public);
+		checkUsernameAvailability();
+	});
+	Ui::show(
+		Box<RevokePublicLinkBox>(std::move(revokeCallback)),
+		LayerOption::KeepOther);
+}
+
+void Controller::usernameChanged() {
+	auto username = _controls.username->getLastText().trimmed();
+	if (username.isEmpty()) {
+		_controls.usernameResult = nullptr;
+		_checkUsernameTimer.cancel();
+		return;
+	}
+	auto bad = base::find_if(username, [](QChar ch) {
+		return (ch < 'A' || ch > 'Z')
+			&& (ch < 'a' || ch > 'z')
+			&& (ch < '0' || ch > '9')
+			&& (ch != '_');
+	}) != username.end();
+	if (bad) {
+		showUsernameError(
+			Lang::Viewer(lng_create_channel_link_bad_symbols));
+	} else if (username.size() < MinUsernameLength) {
+		showUsernameError(
+			Lang::Viewer(lng_create_channel_link_too_short));
+	} else {
+		_controls.usernameResult = nullptr;
+		_checkUsernameTimer.callOnce(kUsernameCheckTimeout);
+	}
+}
+
+void Controller::showUsernameError(rpl::producer<QString> &&error) {
+	showUsernameResult(std::move(error), &st::editPeerUsernameError);
+}
+
+void Controller::showUsernameGood() {
+	showUsernameResult(
+		Lang::Viewer(lng_create_channel_link_available),
+		&st::editPeerUsernameGood);
+}
+
+void Controller::showUsernameResult(
+		rpl::producer<QString> &&text,
+		not_null<const style::FlatLabel*> st) {
+	if (!_controls.usernameResult
+		|| _controls.usernameResultStyle != st) {
+		_controls.usernameResultStyle = st;
+		_controls.usernameResult = base::make_unique_q<Ui::FlatLabel>(
+			_controls.usernameWrap,
+			_usernameResultTexts.events() | rpl::flatten_latest(),
+			*st);
+		auto label = _controls.usernameResult.get();
+		label->show();
+		label->widthValue()
+			| rpl::start_with_next([label] {
+				label->moveToRight(
+					st::editPeerUsernamePosition.x(),
+					st::editPeerUsernamePosition.y());
+			}, label->lifetime());
+	}
+	_usernameResultTexts.fire(std::move(text));
+}
+
+void Controller::createInviteLink() {
+	exportInviteLink(lang(_isGroup
+		? lng_group_invite_about
+		: lng_group_invite_about_channel));
+}
+
+void Controller::revokeInviteLink() {
+	exportInviteLink(lang(lng_group_invite_about_new));
+}
+
+void Controller::exportInviteLink(const QString &confirmation) {
+	auto boxPointer = std::make_shared<QPointer<ConfirmBox>>();
+	auto callback = base::lambda_guarded(this, [=] {
+		if (auto strong = *boxPointer) {
+			strong->closeBox();
+		}
+		Auth().api().exportInviteLink(_channel);
+	});
+	auto box = Box<ConfirmBox>(
+		confirmation,
+		std::move(callback));
+	*boxPointer = Ui::show(std::move(box), LayerOption::KeepOther);
+}
+
+bool Controller::canEditInviteLink() const {
+	if (_channel->canEditUsername()) {
+		return true;
+	}
+	return (!_channel->isPublic() && _channel->canAddMembers());
+}
+
+bool Controller::inviteLinkShown() const {
+	return !_controls.privacy
+		|| (_controls.privacy->value() == Privacy::Private);
+}
+
+object_ptr<Ui::RpWidget> Controller::createInviteLinkEdit() {
+	Expects(_wrap != nullptr);
+
+	if (!canEditInviteLink()) {
+		return nullptr;
+	}
+
+	auto result = object_ptr<Ui::SlideWrap<Ui::VerticalLayout>>(
+		_wrap,
+		object_ptr<Ui::VerticalLayout>(_wrap),
+		st::editPeerInviteLinkMargins);
+	_controls.editInviteLinkWrap = result.data();
+
+	auto container = result->entity();
+	container->add(object_ptr<Ui::FlatLabel>(
+		container,
+		Lang::Viewer(lng_profile_invite_link_section),
+		st::editPeerSectionLabel));
+	container->add(object_ptr<Ui::FixedHeightWidget>(
+		container,
+		st::editPeerInviteLinkSkip));
+
+	_controls.inviteLink = container->add(object_ptr<Ui::FlatLabel>(
+		container,
+		st::editPeerInviteLink));
+	_controls.inviteLink->setSelectable(true);
+	_controls.inviteLink->setContextCopyText(QString());
+	_controls.inviteLink->setBreakEverywhere(true);
+	_controls.inviteLink->setClickHandlerHook([this](auto&&...) {
+		Application::clipboard()->setText(_channel->inviteLink());
+		Ui::Toast::Show(lang(lng_group_invite_copied));
+		return false;
+	});
+
+	container->add(object_ptr<Ui::FixedHeightWidget>(
+		container,
+		st::editPeerInviteLinkSkip));
+	container->add(object_ptr<Ui::LinkButton>(
+		container,
+		lang(lng_group_invite_create_new),
+		st::editPeerInviteLinkButton)
+	)->addClickHandler([this] { revokeInviteLink(); });
+
+	Notify::PeerUpdateValue(
+		_channel,
+		Notify::PeerUpdate::Flag::InviteLinkChanged)
+		| rpl::start_with_next([this] {
+			refreshEditInviteLink();
+		}, _controls.editInviteLinkWrap->lifetime());
+
+	return std::move(result);
+}
+
+void Controller::refreshEditInviteLink() {
+	auto link = _channel->inviteLink();
+	auto text = TextWithEntities();
+	if (!link.isEmpty()) {
+		text.text = link;
+		auto remove = qstr("https://");
+		if (text.text.startsWith(remove)) {
+			text.text.remove(0, remove.size());
+		}
+		text.entities.push_back(EntityInText(
+			EntityInTextCustomUrl,
+			0,
+			text.text.size(),
+			link));
+	}
+	_controls.inviteLink->setMarkedText(text);
+
+	// Hack to expand FlatLabel width to naturalWidth again.
+	_controls.editInviteLinkWrap->resizeToWidth(st::boxWideWidth);
+
+	_controls.editInviteLinkWrap->toggle(
+		inviteLinkShown() && !link.isEmpty(),
+		anim::type::instant);
+}
+
+object_ptr<Ui::RpWidget> Controller::createInviteLinkCreate() {
+	Expects(_wrap != nullptr);
+
+	if (!canEditInviteLink()) {
+		return nullptr;
+	}
+
+	auto result = object_ptr<Ui::SlideWrap<Ui::LinkButton>>(
+		_wrap,
+		object_ptr<Ui::LinkButton>(
+			_wrap,
+			lang(lng_group_invite_create),
+			st::editPeerInviteLinkButton),
+		st::editPeerInviteLinkMargins);
+	result->entity()->addClickHandler([this] {
+		createInviteLink();
+	});
+	_controls.createInviteLinkWrap = result.data();
+
+	Notify::PeerUpdateValue(
+		_channel,
+		Notify::PeerUpdate::Flag::InviteLinkChanged)
+		| rpl::start_with_next([this] {
+			refreshCreateInviteLink();
+		}, _controls.createInviteLinkWrap->lifetime());
+
+	return std::move(result);
+}
+
+void Controller::refreshCreateInviteLink() {
+	auto link = _channel->inviteLink();
+	_controls.createInviteLinkWrap->toggle(
+		inviteLinkShown() && link.isEmpty(),
+		anim::type::instant);
+}
+
+object_ptr<Ui::RpWidget> Controller::createSignaturesEdit() {
+	Expects(_wrap != nullptr);
+
+	if (!_channel->canEditInformation()
+		|| _channel->isMegagroup()) {
+		return nullptr;
+	}
+	auto result = object_ptr<Ui::VerticalLayout>(_wrap);
+	auto container = result.data();
+	container->add(object_ptr<Ui::FixedHeightWidget>(
+		container,
+		st::defaultBoxCheckbox.margin.top()));
+	_controls.signatures = container->add(
+		object_ptr<Ui::PaddingWrap<Ui::Checkbox>>(
+			container,
+			object_ptr<Ui::Checkbox>(
+				container,
+				lang(lng_edit_sign_messages),
+				_channel->addsSignature(),
+				st::defaultBoxCheckbox),
+			st::editPeerSignaturesMargins))->entity();
+	container->add(object_ptr<Ui::FixedHeightWidget>(
+		container,
+		st::defaultBoxCheckbox.margin.bottom()));
+	return std::move(result);
+}
+
+object_ptr<Ui::RpWidget> Controller::createInvitesEdit() {
+	Expects(_wrap != nullptr);
+
+	if (!_channel->canEditInformation()
+		|| !_channel->isMegagroup()) {
+		return nullptr;
+	}
+
+	auto result = object_ptr<Ui::PaddingWrap<Ui::VerticalLayout>>(
+		_wrap,
+		object_ptr<Ui::VerticalLayout>(_wrap),
+		st::editPeerInvitesMargins);
+
+	auto container = result->entity();
+	container->add(object_ptr<Ui::FlatLabel>(
+		container,
+		Lang::Viewer(lng_edit_group_who_invites),
+		st::editPeerSectionLabel));
+	container->add(object_ptr<Ui::FixedHeightWidget>(
+		container,
+		st::editPeerInvitesTopSkip));
+
+	_controls.invites = std::make_shared<Ui::RadioenumGroup<Invites>>(
+		_channel->anyoneCanAddMembers()
+			? Invites::Everyone
+			: Invites::OnlyAdmins);
+	auto addButton = [&](
+			Invites value,
+			LangKey textKey) {
+		container->add(object_ptr<Ui::FixedHeightWidget>(
+			container,
+			st::editPeerInvitesSkip));
+		container->add(object_ptr<Ui::Radioenum<Invites>>(
+			container,
+			_controls.invites,
+			value,
+			lang(textKey),
+			st::defaultBoxCheckbox));
+	};
+	addButton(
+		Invites::Everyone,
+		lng_edit_group_invites_everybody);
+	addButton(
+		Invites::OnlyAdmins,
+		lng_edit_group_invites_only_admins);
+
+	return std::move(result);
+}
+
+object_ptr<Ui::RpWidget> Controller::createDeleteButton() {
+	Expects(_wrap != nullptr);
+
+	if (!_channel->canDelete()) {
+		return nullptr;
+	}
+	auto text = lang(_isGroup
+		? lng_profile_delete_group
+		: lng_profile_delete_channel);
+	auto result = object_ptr<Ui::PaddingWrap<Ui::LinkButton>>(
+		_wrap,
+		object_ptr<Ui::LinkButton>(
+			_wrap,
+			text,
+			st::editPeerDeleteButton),
+		st::editPeerDeleteButtonMargins);
+	result->entity()->addClickHandler([this] {
+		deleteWithConfirmation();
+	});
+	return std::move(result);
+}
+
+void Controller::submitTitle() {
+	Expects(_controls.title != nullptr);
+	Expects(_controls.description != nullptr);
+
+	if (_controls.title->getLastText().isEmpty()) {
+		_controls.title->showError();
+	} else {
+		_controls.description->setFocus();
+	}
+}
+
+void Controller::submitDescription() {
+	Expects(_controls.title != nullptr);
+	Expects(_controls.description != nullptr);
+
+	if (_controls.title->getLastText().isEmpty()) {
+		_controls.title->showError();
+		_controls.title->setFocus();
+	} else {
+		save();
+	}
+}
+
+void Controller::save() {
+	Expects(_wrap != nullptr);
+
+}
+
+void Controller::deleteWithConfirmation() {
+	auto text = lang(_isGroup
+		? lng_sure_delete_group
+		: lng_sure_delete_channel);
+	auto deleteCallback = [channel = _channel] {
+		Ui::hideLayer();
+		Ui::showChatsList();
+		if (auto chat = channel->migrateFrom()) {
+			App::main()->deleteAndExit(chat);
+		}
+		MTP::send(
+			MTPchannels_DeleteChannel(channel->inputChannel),
+			App::main()->rpcDone(&MainWidget::sentUpdatesReceived),
+			App::main()->rpcFail(&MainWidget::deleteChannelFailed));
+	};
+	Ui::show(Box<ConfirmBox>(
+		text,
+		lang(lng_box_delete),
+		st::attentionBoxButton,
+		std::move(deleteCallback)), LayerOption::KeepOther);
+}
+
+void Controller::choosePhotoDelayed() {
+	App::CallDelayed(
+		st::defaultRippleAnimation.hideDuration,
+		this,
+		[this] { choosePhoto(); });
+}
+
+void Controller::choosePhoto() {
+	auto handleChosenPhoto = base::lambda_guarded(
+		_controls.photo,
+		[this](auto &&result) { suggestPhotoFile(result); });
+
+	auto imgExtensions = cImgExtensions();
+	auto filter = qsl("Image files (*") + imgExtensions.join(qsl(" *")) + qsl(");;") + FileDialog::AllFilesFilter();
+	FileDialog::GetOpenPath(
+		lang(lng_choose_image),
+		filter,
+		std::move(handleChosenPhoto));
+}
+
+void Controller::suggestPhotoFile(
+		const FileDialog::OpenResult &result) {
+	if (result.paths.isEmpty() && result.remoteContent.isEmpty()) {
+		return;
+	}
+
+	auto image = [&] {
+		if (!result.remoteContent.isEmpty()) {
+			return App::readImage(result.remoteContent);
+		} else if (!result.paths.isEmpty()) {
+			return App::readImage(result.paths.front());
+		}
+		return QImage();
+	}();
+	suggestPhoto(image);
+}
+
+void Controller::suggestPhoto(const QImage &image) {
+	auto badAspect = [](int a, int b) {
+		return (a >= 10 * b);
+	};
+	if (image.isNull()
+		|| badAspect(image.width(), image.height())
+		|| badAspect(image.height(), image.width())) {
+		Ui::show(Box<InformBox>(lang(lng_bad_photo)));
+		return;
+	}
+
+	auto callback = [this](const QImage &cropped) {
+		_controls.photo->setImage(cropped);
+	};
+	auto box = Ui::show(
+		Box<PhotoCropBox>(image, _channel),
+		LayerOption::KeepOther);
+	QObject::connect(
+		box,
+		&PhotoCropBox::ready,
+		base::lambda_guarded(_controls.photo, std::move(callback)));
+}
+
+} // namespace
+
+EditPeerInfoBox::EditPeerInfoBox(
+	QWidget*,
+	not_null<ChannelData*> channel)
+: _channel(channel) {
+}
+
+void EditPeerInfoBox::prepare() {
+	auto controller = std::make_unique<Controller>(this, _channel);
+	_focusRequests.events()
+		| rpl::start_with_next(
+			[c = controller.get()] { c->setFocus(); },
+			lifetime());
+	auto content = controller->createContent();
+	content->heightValue()
+		| rpl::start_with_next([this](int height) {
+			setDimensions(st::boxWideWidth, height);
+		}, content->lifetime());
+	setInnerWidget(object_ptr<Ui::IgnoreMargins>(
+		this,
+		std::move(content)));
+	Ui::AttachAsChild(this, std::move(controller));
+}

Telegram/SourceFiles/boxes/peers/edit_peer_info_box.h

@@ -0,0 +1,41 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop version of Telegram messaging app, see https://telegram.org
+
+Telegram Desktop is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+It is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+In addition, as a special exception, the copyright holders give permission
+to link the code of portions of this program with the OpenSSL library.
+
+Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
+Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
+*/
+#pragma once
+
+#include <rpl/event_stream.h>
+#include "boxes/peers/manage_peer_box.h"
+
+class EditPeerInfoBox : public BoxContent {
+public:
+	EditPeerInfoBox(QWidget*, not_null<ChannelData*> channel);
+
+	void setInnerFocus() override {
+		_focusRequests.fire({});
+	}
+
+protected:
+	void prepare() override;
+
+private:
+	not_null<ChannelData*> _channel;
+	rpl::event_stream<> _focusRequests;
+
+};

Telegram/SourceFiles/boxes/peers/manage_peer_box.cpp

@@ -22,6 +22,7 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 
 #include <rpl/combine.h>
 #include "lang/lang_keys.h"
+#include "boxes/peers/edit_peer_info_box.h"
 #include "ui/wrap/vertical_layout.h"
 #include "ui/widgets/labels.h"
 #include "history/history_admin_log_section.h"
@@ -35,7 +36,7 @@ Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
 
 namespace {
 
-base::lambda<QString()> ManageBoxTitle(
+base::lambda<QString()> ManagePeerTitle(
 		not_null<ChannelData*> channel) {
 	return langFactory(channel->isMegagroup()
 		? lng_manage_group_title
@@ -83,6 +84,7 @@ void AddButtonWithCount(
 		button,
 		std::move(count),
 		st::managePeerButtonLabel);
+	label->setAttribute(Qt::WA_TransparentForMouseEvents);
 	rpl::combine(button->widthValue(), label->widthValue())
 		| rpl::start_with_next([label](int outerWidth, int width) {
 			label->moveToRight(
@@ -118,9 +120,7 @@ void FillManageBox(
 			Lang::Viewer(isGroup
 				? lng_manage_group_info
 				: lng_manage_channel_info),
-			[=] {
-
-			},
+			[=] { Ui::show(Box<EditPeerInfoBox>(channel)); },
 			st::infoIconInformation);
 	}
 	if (HasRecentActions(channel)) {
@@ -195,10 +195,14 @@ ManagePeerBox::ManagePeerBox(
 }
 
 bool ManagePeerBox::Available(not_null<ChannelData*> channel) {
+	// canViewMembers() is removed, because in supergroups you
+	// see them in profile and in channels only admins can see them.
+
 	// canViewAdmins() is removed, because in supergroups it is
 	// always true and in channels it is equal to canViewBanned().
 
-	return channel->canViewMembers()
+	return false
+//		|| channel->canViewMembers()
 //		|| channel->canViewAdmins()
 		|| channel->canViewBanned()
 		|| channel->canEditInformation()
@@ -208,7 +212,7 @@ bool ManagePeerBox::Available(not_null<ChannelData*> channel) {
 void ManagePeerBox::prepare() {
 	_channel->updateFull();
 
-	setTitle(ManageBoxTitle(_channel));
+	setTitle(ManagePeerTitle(_channel));
 	addButton(langFactory(lng_cancel), [this] { closeBox(); });
 
 	setupContent();

Telegram/SourceFiles/calls/calls.style

@@ -95,7 +95,7 @@ callMuteRight: 8px;
 
 callNameTop: 15px;
 callName: FlatLabel(defaultFlatLabel) {
-	width: 260px;
+	minWidth: 260px;
 	maxHeight: 30px;
 	textFg: callNameFg;
 	align: align(top);
@@ -107,7 +107,7 @@ callName: FlatLabel(defaultFlatLabel) {
 }
 callStatusTop: 46px;
 callStatus: FlatLabel(defaultFlatLabel) {
-	width: 260px;
+	minWidth: 260px;
 	maxHeight: 20px;
 	textFg: callStatusFg;
 	align: align(top);

Telegram/SourceFiles/chat_helpers/chat_helpers.style

@@ -29,7 +29,7 @@ switchPmButton: RoundButton(defaultBoxButton) {
 	textTop: 7px;
 }
 stickersRestrictedLabel: FlatLabel(defaultFlatLabel) {
-	width: 320px;
+	minWidth: 320px;
 	align: align(center);
 	textFg: noContactsColor;
 }

Telegram/SourceFiles/info/info.style

@@ -260,7 +260,6 @@ infoProfileStatusLeft: 109px;
 infoProfileStatusRight: 20px;
 infoProfileStatusTop: 58px;
 infoProfileStatusLabel: FlatLabel(defaultFlatLabel) {
-	width: 0px;
 	maxHeight: 18px;
 	textFg: windowSubTextFg;
 	style: TextStyle(defaultTextStyle) {
@@ -324,7 +323,6 @@ infoSharedMediaButtonIconPosition: point(20px, 3px);
 infoIconPosition: point(20px, 15px);
 
 infoLabeledOneLine: FlatLabel(defaultFlatLabel) {
-	width: 0px; // No need to set minWidth in one-line text.
 	maxHeight: 20px;
 	style: TextStyle(defaultTextStyle) {
 		lineHeight: 19px;
@@ -335,7 +333,7 @@ infoLabel: FlatLabel(infoLabeledOneLine) {
 	textFg: windowSubTextFg;
 }
 infoLabeled: FlatLabel(infoLabeledOneLine) {
-	width: 180px;
+	minWidth: 180px;
 	maxHeight: 0px;
 	margin: margins(5px, 5px, 5px, 5px);
 }
@@ -538,11 +536,58 @@ infoCommonGroupsList: PeerList(infoMembersList) {
 }
 
 managePeerButton: InfoProfileButton(infoProfileButton) {
-	padding: margins(76px, 10px, 76px, 8px);
+	padding: margins(76px, 12px, 76px, 10px);
 }
-managePeerButtonIconPosition: infoSharedMediaButtonIconPosition;
+managePeerButtonIconPosition: point(20px, 5px);
 managePeerButtonLabel: FlatLabel(defaultFlatLabel) {
 	textFg: windowActiveTextFg;
 	style: semiboldTextStyle;
 }
 managePeerButtonLabelPosition: point(25px, 10px);
+
+editPeerDeleteButtonMargins: margins(23px, 16px, 23px, 16px);
+editPeerDeleteButton: sessionTerminateAllButton;
+editPeerPhotoSize: newGroupPhotoSize;
+editPeerPhotoIconPosition: newGroupPhotoIconPosition;
+editPeerPhotoMargins: margins(23px, 16px, 23px, 8px);
+editPeerTitle: defaultInputField;
+editPeerTitleMargins: margins(27px, 21px, 23px, 8px);
+editPeerDescription: newGroupDescription;
+editPeerDescriptionMargins: margins(23px, 5px, 23px, 16px);
+editPeerPrivaciesMargins: margins(23px, 10px, 23px, 0px);
+editPeerPrivacyTopSkip: 10px;
+editPeerPrivacyBottomSkip: 16px;
+editPeerPrivacyLabel: FlatLabel(defaultFlatLabel) {
+	minWidth: 263px;
+	textFg: windowSubTextFg;
+}
+editPeerPrivacyLabelMargins: margins(34px, 0px, 0px, 0px);
+editPeerSectionLabel: FlatLabel(boxTitle) {
+	style: TextStyle(defaultTextStyle) {
+		font: font(15px semibold);
+		linkFont: font(15px semibold);
+		linkFontOver: font(15px semibold underline);
+	}
+}
+editPeerUsername: setupChannelLink;
+editPeerUsernameSkip: 8px;
+editPeerInviteLink: FlatLabel(defaultFlatLabel) {
+	minWidth: 1px; // for break everywhere
+	style: boxTextStyle;
+}
+editPeerInviteLinkButton: boxLinkButton;
+editPeerUsernameMargins: margins(0px, 10px, 0px, 0px);
+editPeerUsernameGood: FlatLabel(defaultFlatLabel) {
+	textFg: boxTextFgGood;
+	style: boxTextStyle;
+}
+editPeerUsernameError: FlatLabel(editPeerUsernameGood) {
+	textFg: boxTextFgError;
+}
+editPeerUsernamePosition: point(0px, 10px);
+editPeerInviteLinkSkip: 10px;
+editPeerInviteLinkMargins: margins(23px, 10px, 14px, 0px);
+editPeerSignaturesMargins: margins(23px, 16px, 23px, 8px);
+editPeerInvitesMargins: margins(23px, 18px, 23px, 16px);
+editPeerInvitesTopSkip: 10px;
+editPeerInvitesSkip: 10px;

Telegram/SourceFiles/info/profile/info_profile_actions.cpp

@@ -235,8 +235,8 @@ object_ptr<Ui::RpWidget> DetailsFiller::setupMuteToggle() {
 		NotificationsEnabledValue(peer)
 	)->addClickHandler([=] {
 		App::main()->updateNotifySetting(
-			_peer,
-			_peer->isMuted()
+			peer,
+			peer->isMuted()
 				? NotifySettingSetNotify
 				: NotifySettingSetMuted);
 	});

Telegram/SourceFiles/profile/profile.style

@@ -37,7 +37,7 @@ profileNameLeft: 26px;
 profileNameTop: 9px;
 profileNameLabel: FlatLabel(defaultFlatLabel) {
 	margin: margins(10px, 5px, 10px, 5px);
-	width: 160px;
+	minWidth: 160px;
 	maxHeight: 24px;
 	textFg: windowBoldFg;
 	style: TextStyle(defaultTextStyle) {
@@ -98,15 +98,15 @@ profileBlockLabel: FlatLabel(defaultFlatLabel) {
 	textFg: windowSubTextFg;
 }
 profileBlockTextPart: FlatLabel(defaultFlatLabel) {
-	width: 180px;
+	minWidth: 180px;
 	margin: margins(5px, 5px, 5px, 5px);
 }
 profileBlockOneLineTextPart: FlatLabel(profileBlockTextPart) {
-	width: 0px; // No need to set minWidth in one-line text.
+	minWidth: 0px; // No need to set minWidth in one-line text.
 	maxHeight: 20px;
 }
 profileBioLabel: FlatLabel(profileBlockOneLineTextPart) {
-	width: 120px;
+	minWidth: 120px;
 	maxHeight: 0px;
 }
 profileBlockOneLineSkip: 9px;
@@ -116,7 +116,7 @@ profileEnableNotificationsTop: 7px;
 profileSettingsBlockSkip: 8px;
 
 profileInviteLinkText: FlatLabel(profileBlockTextPart) {
-	width: 1px; // Required for BreakEverywhere
+	minWidth: 1px; // Required for BreakEverywhere
 }
 
 profileLimitReachedSkip: 6px;
@@ -135,7 +135,7 @@ profileMemberCreatorIconOver: icon {{ "profile_admin_star", profileAdminStarFgOv
 profileMemberAdminIcon: icon {{ "profile_admin_star", profileOtherAdminStarFg, point(4px, 3px) }};
 profileMemberAdminIconOver: icon {{ "profile_admin_star", profileOtherAdminStarFgOver, point(4px, 3px) }};
 profileLimitReachedLabel: FlatLabel(defaultFlatLabel) {
-	width: 180px;
+	minWidth: 180px;
 	margin: margins(profileMemberPaddingLeft, 9px, profileMemberPaddingLeft, 6px);
 	style: TextStyle(defaultTextStyle) {
 		lineHeight: 19px;

Telegram/SourceFiles/profile/profile_channel_controllers.cpp

@@ -315,8 +315,10 @@ void ParticipantsBoxController::restoreState(
 			loadMoreRows();
 		}
 		PeerListController::restoreState(std::move(state));
-		if (!_offset) {
-			setDescriptionText(QString());
+		if (delegate()->peerListFullRowsCount() > 0) {
+			setNonEmptyDescription();
+		} else if (_allLoaded) {
+			setDescriptionText(lang(lng_blocked_list_not_found));
 		}
 		sortByOnline();
 	}
@@ -442,11 +444,9 @@ void ParticipantsBoxController::loadMoreRows() {
 	_loadRequestId = request(MTPchannels_GetParticipants(_channel->inputChannel, filter(), MTP_int(_offset), MTP_int(perPage))).done([this](const MTPchannels_ChannelParticipants &result) {
 		Expects(result.type() == mtpc_channels_channelParticipants);
 
+		auto firstLoad = !_offset;
 		_loadRequestId = 0;
 
-		if (!_offset) {
-			setDescriptionText((_role == Role::Restricted) ? lang(lng_group_blocked_list_about) : QString());
-		}
 		auto &participants = result.c_channels_channelParticipants();
 		App::feedUsers(participants.vusers);
 
@@ -462,13 +462,26 @@ void ParticipantsBoxController::loadMoreRows() {
 				});
 			}
 		}
-		sortByOnline();
+		if (delegate()->peerListFullRowsCount() > 0) {
+			sortByOnline();
+			if (firstLoad) {
+				setNonEmptyDescription();
+			}
+		} else if (_allLoaded) {
+			setDescriptionText(lang(lng_blocked_list_not_found));
+		}
 		delegate()->peerListRefreshRows();
 	}).fail([this](const RPCError &error) {
 		_loadRequestId = 0;
 	}).send();
 }
 
+void ParticipantsBoxController::setNonEmptyDescription() {
+	setDescriptionText((_role == Role::Kicked)
+		? lang(lng_group_blocked_list_about)
+		: QString());
+}
+
 bool ParticipantsBoxController::feedMegagroupLastParticipants() {
 	if ((_role != Role::Members && _role != Role::Profile)
 		|| _offset > 0) {
@@ -822,7 +835,8 @@ bool ParticipantsBoxController::removeRow(not_null<UserData*> user) {
 		} else {
 			delegate()->peerListRemoveRow(row);
 		}
-		if (!delegate()->peerListFullRowsCount()) {
+		if (_role != Role::Kicked
+			&& !delegate()->peerListFullRowsCount()) {
 			setDescriptionText(lang(lng_blocked_list_not_found));
 		}
 		return true;

Telegram/SourceFiles/profile/profile_channel_controllers.h

@@ -120,6 +120,7 @@ private:
 		Role role,
 		not_null<Additional*> additional);
 
+	void setNonEmptyDescription();
 	void setupSortByOnline();
 	void setupListChangeViewers();
 	void sortByOnlineDelayed();

Telegram/SourceFiles/settings/settings.style

@@ -49,7 +49,7 @@ settingsNameLeft: 26px;
 settingsNameTop: 9px;
 settingsNameLabel: FlatLabel(defaultFlatLabel) {
 	margin: margins(10px, 5px, 10px, 5px);
-	width: 160px;
+	minWidth: 160px;
 	maxHeight: 24px;
 	textFg: windowBoldFg;
 	style: TextStyle(defaultTextStyle) {
@@ -98,12 +98,12 @@ settingsBlockLabel: FlatLabel(settingsPrimaryLabel) {
 	textFg: windowSubTextFg;
 }
 settingsBlockOneLineTextPart: FlatLabel(settingsPrimaryLabel) {
-	width: 0px; // No need to set minWidth in one-line text.
+	minWidth: 0px; // No need to set minWidth in one-line text.
 	margin: margins(5px, 5px, 5px, 5px);
 	maxHeight: 20px;
 }
 settingsBioValue: FlatLabel(settingsBlockOneLineTextPart) {
-	width: 120px;
+	minWidth: 120px;
 	maxHeight: 0px;
 }
 settingsSubSkip: 4px;

Telegram/SourceFiles/ui/special_buttons.h

@@ -168,6 +168,10 @@ public:
 
 	void setImage(const QImage &image);
 
+	int naturalWidth() const override {
+		return height();
+	}
+
 protected:
 	void paintEvent(QPaintEvent *e) override;
 

Telegram/SourceFiles/ui/widgets/input_fields.cpp

@@ -1744,7 +1744,12 @@ void FlatInput::onTextChange(const QString &text) {
 	if (App::wnd()) App::wnd()->updateGlobalMenu();
 }
 
-InputArea::InputArea(QWidget *parent, const style::InputField &st, base::lambda<QString()> placeholderFactory, const QString &val) : TWidget(parent)
+InputArea::InputArea(
+	QWidget *parent,
+	const style::InputField &st,
+	base::lambda<QString()> placeholderFactory,
+	const QString &val)
+: RpWidget(parent)
 , _st(st)
 , _inner(this)
 , _oldtext(val)
@@ -3272,7 +3277,12 @@ void InputField::setErrorShown(bool error) {
 	}
 }
 
-MaskedInputField::MaskedInputField(QWidget *parent, const style::InputField &st, base::lambda<QString()> placeholderFactory, const QString &val) : TWidgetHelper<QLineEdit>(val, parent)
+MaskedInputField::MaskedInputField(
+	QWidget *parent,
+	const style::InputField &st,
+	base::lambda<QString()> placeholderFactory,
+	const QString &val)
+: Parent(val, parent)
 , _st(st)
 , _oldtext(val)
 , _placeholderFactory(std::move(placeholderFactory)) {
@@ -3350,15 +3360,18 @@ void MaskedInputField::onTouchTimer() {
 	_touchRightButton = true;
 }
 
-bool MaskedInputField::event(QEvent *e) {
-	if (e->type() == QEvent::TouchBegin || e->type() == QEvent::TouchUpdate || e->type() == QEvent::TouchEnd || e->type() == QEvent::TouchCancel) {
-		QTouchEvent *ev = static_cast<QTouchEvent*>(e);
-		if (ev->device()->type() == QTouchDevice::TouchScreen) {
-			touchEvent(ev);
-			return QLineEdit::event(e);
+bool MaskedInputField::eventHook(QEvent *e) {
+	auto type = e->type();
+	if (type == QEvent::TouchBegin
+		|| type == QEvent::TouchUpdate
+		|| type == QEvent::TouchEnd
+		|| type == QEvent::TouchCancel) {
+		auto event = static_cast<QTouchEvent*>(e);
+		if (event->device()->type() == QTouchDevice::TouchScreen) {
+			touchEvent(event);
 		}
 	}
-	return QLineEdit::event(e);
+	return Parent::eventHook(e);
 }
 
 void MaskedInputField::touchEvent(QTouchEvent *e) {

Telegram/SourceFiles/ui/widgets/input_fields.h

@@ -324,11 +324,15 @@ enum class CtrlEnterSubmit {
 	Both,
 };
 
-class InputArea : public TWidget, private base::Subscriber {
+class InputArea : public RpWidget, private base::Subscriber {
 	Q_OBJECT
 
 public:
-	InputArea(QWidget *parent, const style::InputField &st, base::lambda<QString()> placeholderFactory = base::lambda<QString()>(), const QString &val = QString());
+	InputArea(
+		QWidget *parent,
+		const style::InputField &st,
+		base::lambda<QString()> placeholderFactory = base::lambda<QString()>(),
+		const QString &val = QString());
 
 	void showError();
 
@@ -687,9 +691,12 @@ private:
 	bool _correcting = false;
 };
 
-class MaskedInputField : public TWidgetHelper<QLineEdit>, private base::Subscriber {
+class MaskedInputField
+	: public RpWidgetWrap<QLineEdit>
+	, private base::Subscriber {
 	Q_OBJECT
 
+	using Parent = RpWidgetWrap<QLineEdit>;
 public:
 	MaskedInputField(QWidget *parent, const style::InputField &st, base::lambda<QString()> placeholderFactory = base::lambda<QString()>(), const QString &val = QString());
 
@@ -748,7 +755,7 @@ protected:
 	void startBorderAnimation();
 	void startPlaceholderAnimation();
 
-	bool event(QEvent *e) override;
+	bool eventHook(QEvent *e) override;
 	void touchEvent(QTouchEvent *e);
 	void paintEvent(QPaintEvent *e) override;
 	void focusInEvent(QFocusEvent *e) override;

Telegram/SourceFiles/ui/widgets/labels.cpp

@@ -139,7 +139,7 @@ void LabelSimple::paintEvent(QPaintEvent *e) {
 
 FlatLabel::FlatLabel(QWidget *parent, const style::FlatLabel &st)
 : RpWidget(parent)
-, _text(st.width ? st.width : QFIXED_MAX)
+, _text(st.minWidth ? st.minWidth : QFIXED_MAX)
 , _st(st)
 , _contextCopyText(lang(lng_context_copy_text)) {
 	init();
@@ -151,7 +151,7 @@ FlatLabel::FlatLabel(
 	InitType initType,
 	const style::FlatLabel &st)
 : RpWidget(parent)
-, _text(st.width ? st.width : QFIXED_MAX)
+, _text(st.minWidth ? st.minWidth : QFIXED_MAX)
 , _st(st)
 , _contextCopyText(lang(lng_context_copy_text)) {
 	if (initType == InitType::Rich) {
@@ -167,7 +167,7 @@ FlatLabel::FlatLabel(
 	rpl::producer<QString> &&text,
 	const style::FlatLabel &st)
 : RpWidget(parent)
-, _text(st.width ? st.width : QFIXED_MAX)
+, _text(st.minWidth ? st.minWidth : QFIXED_MAX)
 , _st(st)
 , _contextCopyText(lang(lng_context_copy_text)) {
 	textUpdated();
@@ -182,7 +182,7 @@ FlatLabel::FlatLabel(
 	rpl::producer<TextWithEntities> &&text,
 	const style::FlatLabel &st)
 : RpWidget(parent)
-, _text(st.width ? st.width : QFIXED_MAX)
+, _text(st.minWidth ? st.minWidth : QFIXED_MAX)
 , _st(st)
 , _contextCopyText(lang(lng_context_copy_text)) {
 	textUpdated();
@@ -259,7 +259,7 @@ QMargins FlatLabel::getMargins() const {
 int FlatLabel::countTextWidth() const {
 	return _allowedWidth
 		? _allowedWidth
-		: (_st.width ? _st.width : _text.maxWidth());
+		: (_st.minWidth ? _st.minWidth : _text.maxWidth());
 }
 
 int FlatLabel::countTextHeight(int textWidth) {

Telegram/SourceFiles/ui/widgets/widgets.style

@@ -29,7 +29,7 @@ LabelSimple {
 
 FlatLabel {
 	margin: margins;
-	width: pixels;
+	minWidth: pixels;
 	align: align;
 	textFg: color;
 	maxHeight: pixels;
@@ -522,7 +522,7 @@ defaultLabelSimple: LabelSimple {
 }
 
 defaultFlatLabel: FlatLabel {
-	width: 0px;
+	minWidth: 0px;
 	maxHeight: 0px;
 	align: align(left);
 	textFg: windowFg;

Telegram/SourceFiles/ui/wrap/wrap.h

@@ -158,4 +158,42 @@ public:
 
 };
 
+class IgnoreMargins : public Wrap<RpWidget> {
+	using Parent = Wrap<RpWidget>;
+
+public:
+	IgnoreMargins(QWidget *parent, object_ptr<RpWidget> &&child)
+	: Parent(parent, std::move(child)) {
+		if (auto weak = wrapped()) {
+			auto margins = weak->getMargins();
+			resizeToWidth(weak->width()
+				- margins.left()
+				- margins.right());
+		}
+	}
+
+	QMargins getMargins() const override {
+		return QMargins();
+	}
+
+protected:
+	int resizeGetHeight(int newWidth) override {
+		if (auto weak = wrapped()) {
+			weak->resizeToWidth(newWidth);
+			weak->moveToLeft(0, 0);
+			return weak->heightNoMargins();
+		}
+		return height();
+	}
+
+private:
+	void wrappedSizeUpdated(QSize size) override {
+		auto margins = wrapped()->getMargins();
+		resize(
+			size.width() - margins.left() - margins.right(),
+			size.height() - margins.top() - margins.bottom());
+	}
+
+};
+
 } // namespace Ui

Telegram/gyp/telegram_sources.txt

@@ -34,6 +34,8 @@
 <(src_loc)/base/virtual_method.h
 <(src_loc)/base/weak_unique_ptr.h
 <(src_loc)/base/zlib_help.h
+<(src_loc)/boxes/peers/edit_peer_info_box.cpp
+<(src_loc)/boxes/peers/edit_peer_info_box.h
 <(src_loc)/boxes/peers/manage_peer_box.cpp
 <(src_loc)/boxes/peers/manage_peer_box.h
 <(src_loc)/boxes/about_box.cpp