/*
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) 2014-2016 John Preston, https://desktop.telegram.org
*/
#include "stdafx.h"
#include "boxes/addcontactbox.h"

#include "styles/style_boxes.h"
#include "styles/style_dialogs.h"
#include "lang.h"
#include "application.h"
#include "boxes/contactsbox.h"
#include "boxes/confirmbox.h"
#include "boxes/photocropbox.h"
#include "ui/filedialog.h"
#include "ui/widgets/checkbox.h"
#include "ui/widgets/buttons.h"
#include "ui/widgets/input_fields.h"
#include "ui/widgets/labels.h"
#include "ui/toast/toast.h"
#include "ui/buttons/peer_avatar_button.h"
#include "mainwidget.h"
#include "mainwindow.h"
#include "apiwrap.h"
#include "observer_peer.h"

AddContactBox::AddContactBox(QWidget*, QString fname, QString lname, QString phone)
: _first(this, st::defaultInputField, lang(lng_signup_firstname), fname)
, _last(this, st::defaultInputField, lang(lng_signup_lastname), lname)
, _phone(this, st::defaultInputField, lang(lng_contact_phone), phone)
, _invertOrder(langFirstNameGoesSecond()) {
	if (!phone.isEmpty()) {
		_phone->setDisabled(true);
	}
}

AddContactBox::AddContactBox(QWidget*, UserData *user)
: _user(user)
, _first(this, st::defaultInputField, lang(lng_signup_firstname), user->firstName)
, _last(this, st::defaultInputField, lang(lng_signup_lastname), user->lastName)
, _phone(this, st::defaultInputField, lang(lng_contact_phone), user->phone())
, _invertOrder(langFirstNameGoesSecond()) {
	_phone->setDisabled(true);
}

void AddContactBox::prepare() {
	if (_invertOrder) {
		setTabOrder(_last, _first);
	}
	if (_user) {
		setTitle(lang(lng_edit_contact_title));
	} else {
		bool readyToAdd = !_phone->getLastText().isEmpty() && (!_first->getLastText().isEmpty() || !_last->getLastText().isEmpty());
		setTitle(lang(readyToAdd ? lng_confirm_contact_data : lng_enter_contact_data));
	}
	updateButtons();

	connect(_first, SIGNAL(submitted(bool)), this, SLOT(onSubmit()));
	connect(_last, SIGNAL(submitted(bool)), this, SLOT(onSubmit()));
	connect(_phone, SIGNAL(submitted(bool)), this, SLOT(onSubmit()));

	setDimensions(st::boxWideWidth, st::contactPadding.top() + _first->height() + st::contactSkip + _last->height() + st::contactPhoneSkip + _phone->height() + st::contactPadding.bottom() + st::boxPadding.bottom());
}

void AddContactBox::setInnerFocus() {
	if ((_first->getLastText().isEmpty() && _last->getLastText().isEmpty()) || !_phone->isEnabled()) {
		(_invertOrder ? _last : _first)->setFocusFast();
		_phone->finishAnimations();
	} else {
		_phone->setFocusFast();
	}
}

void AddContactBox::paintEvent(QPaintEvent *e) {
	BoxContent::paintEvent(e);

	Painter p(this);
	if (_retrying) {
		p.setPen(st::boxTextFg);
		p.setFont(st::boxTextFont);
		auto textHeight = height() - st::contactPadding.top() - st::contactPadding.bottom() - st::boxPadding.bottom();
		p.drawText(QRect(st::boxPadding.left(), st::contactPadding.top(), width() - st::boxPadding.left() - st::boxPadding.right(), textHeight), lng_contact_not_joined(lt_name, _sentName), style::al_topleft);
	} else {
		st::contactUserIcon.paint(p, st::boxPadding.left(), _first->y() + st::contactIconTop, width());
		st::contactPhoneIcon.paint(p, st::boxPadding.left(), _phone->y() + st::contactIconTop, width());
	}
}

void AddContactBox::resizeEvent(QResizeEvent *e) {
	BoxContent::resizeEvent(e);

	_first->resize(width() - st::boxPadding.left() - st::contactPadding.left() - st::boxPadding.right(), _first->height());
	_last->resize(_first->width(), _last->height());
	_phone->resize(_first->width(), _last->height());
	if (_invertOrder) {
		_last->moveToLeft(st::boxPadding.left() + st::contactPadding.left(), st::contactPadding.top());
		_first->moveToLeft(st::boxPadding.left() + st::contactPadding.left(), _last->y() + _last->height() + st::contactSkip);
		_phone->moveToLeft(st::boxPadding.left() + st::contactPadding.left(), _first->y() + _first->height() + st::contactPhoneSkip);
	} else {
		_first->moveToLeft(st::boxPadding.left() + st::contactPadding.left(), st::contactPadding.top());
		_last->moveToLeft(st::boxPadding.left() + st::contactPadding.left(), _first->y() + _first->height() + st::contactSkip);
		_phone->moveToLeft(st::boxPadding.left() + st::contactPadding.left(), _last->y() + _last->height() + st::contactPhoneSkip);
	}
}

void AddContactBox::onSubmit() {
	if (_first->hasFocus()) {
		_last->setFocus();
	} else if (_last->hasFocus()) {
		if (_phone->isEnabled()) {
			_phone->setFocus();
		} else {
			onSave();
		}
	} else if (_phone->hasFocus()) {
		onSave();
	}
}

void AddContactBox::onSave() {
	if (_addRequest) return;

	QString firstName = prepareText(_first->getLastText());
	QString lastName = prepareText(_last->getLastText());
	QString phone = _phone->getLastText().trimmed();
	if (firstName.isEmpty() && lastName.isEmpty()) {
		if (_invertOrder) {
			_last->setFocus();
			_last->showError();
		} else {
			_first->setFocus();
			_first->showError();
		}
		return;
	} else if (!_user && !App::isValidPhone(phone)) {
		_phone->setFocus();
		_phone->showError();
		return;
	}
	if (firstName.isEmpty()) {
		firstName = lastName;
		lastName = QString();
	}
	_sentName = firstName;
	if (_user) {
		_contactId = rand_value<uint64>();
		QVector<MTPInputContact> v(1, MTP_inputPhoneContact(MTP_long(_contactId), MTP_string(_user->phone()), MTP_string(firstName), MTP_string(lastName)));
		_addRequest = MTP::send(MTPcontacts_ImportContacts(MTP_vector<MTPInputContact>(v), MTP_bool(false)), rpcDone(&AddContactBox::onSaveUserDone), rpcFail(&AddContactBox::onSaveUserFail));
	} else {
		_contactId = rand_value<uint64>();
		QVector<MTPInputContact> v(1, MTP_inputPhoneContact(MTP_long(_contactId), MTP_string(phone), MTP_string(firstName), MTP_string(lastName)));
		_addRequest = MTP::send(MTPcontacts_ImportContacts(MTP_vector<MTPInputContact>(v), MTP_bool(false)), rpcDone(&AddContactBox::onImportDone));
	}
}

bool AddContactBox::onSaveUserFail(const RPCError &error) {
	if (MTP::isDefaultHandledError(error)) return false;

	_addRequest = 0;
	QString err(error.type());
	QString firstName = _first->getLastText().trimmed(), lastName = _last->getLastText().trimmed();
	if (err == "CHAT_TITLE_NOT_MODIFIED") {
		_user->setName(firstName, lastName, _user->nameOrPhone, _user->username);
		closeBox();
		return true;
	} else if (err == "NO_CHAT_TITLE") {
		_first->setFocus();
		_first->showError();
		return true;
	}
	_first->setFocus();
	return true;
}

void AddContactBox::onImportDone(const MTPcontacts_ImportedContacts &res) {
	if (!isBoxShown() || !App::main()) return;

	auto &d = res.c_contacts_importedContacts();
	App::feedUsers(d.vusers);

	auto &v = d.vimported.c_vector().v;
	UserData *user = nullptr;
	if (!v.isEmpty()) {
		const auto &c(v.front().c_importedContact());
		if (c.vclient_id.v != _contactId) return;

		user = App::userLoaded(c.vuser_id.v);
	}
	if (user) {
		Notify::userIsContactChanged(user, true);
		Ui::hideLayer();
	} else {
		hideChildren();
		_retrying = true;
		updateButtons();
		update();
	}
}

void AddContactBox::onSaveUserDone(const MTPcontacts_ImportedContacts &res) {
	auto &d = res.c_contacts_importedContacts();
	App::feedUsers(d.vusers);
	closeBox();
}

void AddContactBox::onRetry() {
	_addRequest = 0;
	_contactId = 0;
	showChildren();
	_retrying = false;
	updateButtons();
	_first->setText(QString());
	_last->setText(QString());
	_phone->clearText();
	_phone->setDisabled(false);
	_first->setFocus();
	update();
}

void AddContactBox::updateButtons() {
	clearButtons();
	if (_retrying) {
		addButton(lang(lng_try_other_contact), [this] { onRetry(); });
	} else {
		addButton(lang(_user ? lng_settings_save : lng_add_contact), [this] { onSave(); });
		addButton(lang(lng_cancel), [this] { closeBox(); });
	}
}

GroupInfoBox::GroupInfoBox(QWidget*, CreatingGroupType creating, bool fromTypeChoose)
: _creating(creating)
, _fromTypeChoose(fromTypeChoose)
, _photo(this, st::newGroupPhotoSize, st::newGroupPhotoIconPosition)
, _title(this, st::defaultInputField, lang(_creating == CreatingGroupChannel ? lng_dlg_new_channel_name : lng_dlg_new_group_name)) {
}

void GroupInfoBox::prepare() {
	setMouseTracking(true);

	_title->setMaxLength(MaxGroupChannelTitle);

	if (_creating == CreatingGroupChannel) {
		_description.create(this, st::newGroupDescription, lang(lng_create_group_description));
		_description->show();
		_description->setMaxLength(MaxChannelDescription);

		connect(_description, SIGNAL(resized()), this, SLOT(onDescriptionResized()));
		connect(_description, SIGNAL(submitted(bool)), this, SLOT(onNext()));
		connect(_description, SIGNAL(cancelled()), this, SLOT(onClose()));
	}

	connect(_title, SIGNAL(submitted(bool)), this, SLOT(onNameSubmit()));

	addButton(lang(_creating == CreatingGroupChannel ? lng_create_group_create : lng_create_group_next), [this] { onNext(); });
	addButton(lang(_fromTypeChoose ? lng_create_group_back : lng_cancel), [this] { closeBox(); });

	_photo->setClickedCallback(App::LambdaDelayed(st::defaultActiveButton.ripple.hideDuration, this, [this] {
		auto imgExtensions = cImgExtensions();
		auto filter = qsl("Image files (*") + imgExtensions.join(qsl(" *")) + qsl(");;") + filedialogAllFilesFilter();
		_setPhotoFileQueryId = FileDialog::queryReadFile(lang(lng_choose_image), filter);
	}));
	subscribe(FileDialog::QueryDone(), [this](const FileDialog::QueryUpdate &update) {
		notifyFileQueryUpdated(update);
	});

	updateMaxHeight();
}

void GroupInfoBox::setInnerFocus() {
	_title->setFocusFast();
}

void GroupInfoBox::resizeEvent(QResizeEvent *e) {
	BoxContent::resizeEvent(e);

	_photo->moveToLeft(st::boxPadding.left() + st::newGroupInfoPadding.left(), st::boxPadding.top() + st::newGroupInfoPadding.top());

	auto nameLeft = st::newGroupPhotoSize + st::newGroupNamePosition.x();
	_title->resize(width() - st::boxPadding.left() - st::newGroupInfoPadding.left() - st::boxPadding.right() - nameLeft, _title->height());
	_title->moveToLeft(st::boxPadding.left() + st::newGroupInfoPadding.left() + nameLeft, st::boxPadding.top() + st::newGroupInfoPadding.top() + st::newGroupNamePosition.y());
	if (_description) {
		_description->resize(width() - st::boxPadding.left() - st::newGroupInfoPadding.left() - st::boxPadding.right(), _description->height());
		_description->moveToLeft(st::boxPadding.left() + st::newGroupInfoPadding.left(), st::boxPadding.top() + st::newGroupInfoPadding.top() + st::newGroupPhotoSize + st::newGroupDescriptionPadding.top());
	}
}

void GroupInfoBox::onNameSubmit() {
	if (_title->getLastText().trimmed().isEmpty()) {
		_title->setFocus();
		_title->showError();
	} else if (_description) {
		_description->setFocus();
	} else {
		onNext();
	}
}

void GroupInfoBox::onNext() {
	if (_creationRequestId) return;

	auto title = prepareText(_title->getLastText());
	auto description = _description ? prepareText(_description->getLastText(), true) : QString();
	if (title.isEmpty()) {
		_title->setFocus();
		_title->showError();
		return;
	}
	if (_creating == CreatingGroupGroup) {
		Ui::show(Box<ContactsBox>(title, _photoImage), KeepOtherLayers);
	} else {
		bool mega = false;
		MTPchannels_CreateChannel::Flags flags = mega ? MTPchannels_CreateChannel::Flag::f_megagroup : MTPchannels_CreateChannel::Flag::f_broadcast;
		_creationRequestId = MTP::send(MTPchannels_CreateChannel(MTP_flags(flags), MTP_string(title), MTP_string(description)), rpcDone(&GroupInfoBox::creationDone), rpcFail(&GroupInfoBox::creationFail));
	}
}

void GroupInfoBox::creationDone(const MTPUpdates &updates) {
	App::main()->sentUpdatesReceived(updates);

	const QVector<MTPChat> *v = 0;
	switch (updates.type()) {
	case mtpc_updates: v = &updates.c_updates().vchats.c_vector().v; break;
	case mtpc_updatesCombined: v = &updates.c_updatesCombined().vchats.c_vector().v; break;
	default: LOG(("API Error: unexpected update cons %1 (GroupInfoBox::creationDone)").arg(updates.type())); break;
	}

	ChannelData *channel = 0;
	if (v && !v->isEmpty() && v->front().type() == mtpc_channel) {
		channel = App::channel(v->front().c_channel().vid.v);
		if (channel) {
			if (!_photoImage.isNull()) {
				App::app()->uploadProfilePhoto(_photoImage, channel->id);
			}
			_createdChannel = channel;
			_creationRequestId = MTP::send(MTPchannels_ExportInvite(_createdChannel->inputChannel), rpcDone(&GroupInfoBox::exportDone));
			return;
		}
	} else {
		LOG(("API Error: channel not found in updates (GroupInfoBox::creationDone)"));
	}

	closeBox();
}

bool GroupInfoBox::creationFail(const RPCError &error) {
	if (MTP::isDefaultHandledError(error)) return false;

	_creationRequestId = 0;
	if (error.type() == "NO_CHAT_TITLE") {
		_title->setFocus();
		_title->showError();
		return true;
	} else if (error.type() == qstr("USER_RESTRICTED")) {
		Ui::show(Box<InformBox>(lang(lng_cant_do_this)));
		return true;
	}
	return false;
}

void GroupInfoBox::exportDone(const MTPExportedChatInvite &result) {
	_creationRequestId = 0;
	if (result.type() == mtpc_chatInviteExported) {
		_createdChannel->setInviteLink(qs(result.c_chatInviteExported().vlink));
	}
	Ui::show(Box<SetupChannelBox>(_createdChannel));
}

void GroupInfoBox::onDescriptionResized() {
	updateMaxHeight();
	update();
}

void GroupInfoBox::updateMaxHeight() {
	auto newHeight = st::boxPadding.top() + st::newGroupInfoPadding.top() + st::newGroupPhotoSize + st::boxPadding.bottom() + st::newGroupInfoPadding.bottom();
	if (_description) {
		newHeight += st::newGroupDescriptionPadding.top() + _description->height() + st::newGroupDescriptionPadding.bottom();
	}
	setDimensions(st::boxWideWidth, newHeight);
}

void GroupInfoBox::notifyFileQueryUpdated(const FileDialog::QueryUpdate &update) {
	if (_setPhotoFileQueryId != update.queryId) {
		return;
	}
	_setPhotoFileQueryId = 0;
	if (update.remoteContent.isEmpty() && update.filePaths.isEmpty()) {
		return;
	}

	QImage img;
	if (!update.remoteContent.isEmpty()) {
		img = App::readImage(update.remoteContent);
	} else {
		img = App::readImage(update.filePaths.front());
	}
	if (img.isNull() || img.width() > 10 * img.height() || img.height() > 10 * img.width()) {
		return;
	}
	auto box = Ui::show(Box<PhotoCropBox>(img, (_creating == CreatingGroupChannel) ? peerFromChannel(0) : peerFromChat(0)), KeepOtherLayers);
	connect(box, SIGNAL(ready(const QImage&)), this, SLOT(onPhotoReady(const QImage&)));
}

void GroupInfoBox::onPhotoReady(const QImage &img) {
	_photoImage = img;
	_photo->setImage(_photoImage);
}

SetupChannelBox::SetupChannelBox(QWidget*, ChannelData *channel, bool existing)
: _channel(channel)
, _existing(existing)
, _public(this, qsl("channel_privacy"), 0, lang(channel->isMegagroup() ? lng_create_public_group_title : lng_create_public_channel_title), true, st::defaultBoxCheckbox)
, _private(this, qsl("channel_privacy"), 1, lang(channel->isMegagroup() ? lng_create_private_group_title : lng_create_private_channel_title), false, st::defaultBoxCheckbox)
, _aboutPublicWidth(width() - st::boxPadding.left() - st::boxButtonPadding.right() - st::newGroupPadding.left() - st::defaultBoxCheckbox.textPosition.x())
, _aboutPublic(st::normalFont, lang(channel->isMegagroup() ? lng_create_public_group_about : lng_create_public_channel_about), _defaultOptions, _aboutPublicWidth)
, _aboutPrivate(st::normalFont, lang(channel->isMegagroup() ? lng_create_private_group_about : lng_create_private_channel_about), _defaultOptions, _aboutPublicWidth)
, _link(this, st::setupChannelLink, QString(), channel->username, true) {
}

void SetupChannelBox::prepare() {
	_aboutPublicHeight = _aboutPublic.countHeight(_aboutPublicWidth);

	setMouseTracking(true);

	_checkRequestId = MTP::send(MTPchannels_CheckUsername(_channel->inputChannel, MTP_string("preston")), RPCDoneHandlerPtr(), rpcFail(&SetupChannelBox::onFirstCheckFail));

	addButton(lang(lng_settings_save), [this] { onSave(); });
	addButton(lang(_existing ? lng_cancel : lng_create_group_skip), [this] { closeBox(); });

	connect(_link, SIGNAL(changed()), this, SLOT(onChange()));
	_link->setVisible(_public->checked());

	_checkTimer.setSingleShot(true);
	connect(&_checkTimer, SIGNAL(timeout()), this, SLOT(onCheck()));

	connect(_public, SIGNAL(changed()), this, SLOT(onPrivacyChange()));
	connect(_private, SIGNAL(changed()), this, SLOT(onPrivacyChange()));

	updateMaxHeight();
}

void SetupChannelBox::setInnerFocus() {
	if (_link->isHidden()) {
		setFocus();
	} else {
		_link->setFocusFast();
	}
}

void SetupChannelBox::updateMaxHeight() {
	auto newHeight = st::boxPadding.top() + st::newGroupPadding.top() + _public->heightNoMargins() + _aboutPublicHeight + st::newGroupSkip + _private->heightNoMargins() + _aboutPrivate.countHeight(_aboutPublicWidth) + st::newGroupSkip + st::newGroupPadding.bottom();
	if (!_channel->isMegagroup() || _public->checked()) {
		newHeight += st::newGroupLinkPadding.top() + _link->height() + st::newGroupLinkPadding.bottom();
	}
	setDimensions(st::boxWideWidth, newHeight);
}

void SetupChannelBox::keyPressEvent(QKeyEvent *e) {
	if (e->key() == Qt::Key_Enter || e->key() == Qt::Key_Return) {
		if (_link->hasFocus()) {
			if (_link->text().trimmed().isEmpty()) {
				_link->setFocus();
				_link->showError();
			} else {
				onSave();
			}
		}
	} else {
		BoxContent::keyPressEvent(e);
	}
}

void SetupChannelBox::paintEvent(QPaintEvent *e) {
	Painter p(this);

	p.fillRect(e->rect(), st::boxBg);
	p.setPen(st::newGroupAboutFg);

	QRect aboutPublic(st::boxPadding.left() + st::newGroupPadding.left() + st::defaultBoxCheckbox.textPosition.x(), _public->bottomNoMargins(), _aboutPublicWidth, _aboutPublicHeight);
	_aboutPublic.drawLeft(p, aboutPublic.x(), aboutPublic.y(), aboutPublic.width(), width());

	QRect aboutPrivate(st::boxPadding.left() + st::newGroupPadding.left() + st::defaultBoxCheckbox.textPosition.x(), _private->bottomNoMargins(), _aboutPublicWidth, _aboutPublicHeight);
	_aboutPrivate.drawLeft(p, aboutPrivate.x(), aboutPrivate.y(), aboutPrivate.width(), width());

	if (!_channel->isMegagroup() || !_link->isHidden()) {
		p.setPen(st::boxTextFg);
		p.setFont(st::newGroupLinkFont);
		p.drawTextLeft(st::boxPadding.left() + st::newGroupPadding.left() + st::defaultInputField.textMargins.left(), _link->y() - st::newGroupLinkPadding.top() + st::newGroupLinkTop, width(), lang(_link->isHidden() ? lng_create_group_invite_link : lng_create_group_link));
	}

	if (_link->isHidden()) {
		if (!_channel->isMegagroup()) {
			QTextOption option(style::al_left);
			option.setWrapMode(QTextOption::WrapAnywhere);
			p.setFont(_linkOver ? st::boxTextFont->underline() : st::boxTextFont);
			p.setPen(st::defaultLinkButton.color);
			p.drawText(_invitationLink, _channel->inviteLink(), option);
		}
	} else {
		if (!_errorText.isEmpty()) {
			p.setPen(st::boxTextFgError);
			p.setFont(st::boxTextFont);
			p.drawTextRight(st::boxPadding.right(), _link->y() - st::newGroupLinkPadding.top() + st::newGroupLinkTop + st::newGroupLinkFont->ascent - st::boxTextFont->ascent, width(), _errorText);
		} else if (!_goodText.isEmpty()) {
			p.setPen(st::boxTextFgGood);
			p.setFont(st::boxTextFont);
			p.drawTextRight(st::boxPadding.right(), _link->y() - st::newGroupLinkPadding.top() + st::newGroupLinkTop + st::newGroupLinkFont->ascent - st::boxTextFont->ascent, width(), _goodText);
		}
	}
}

void SetupChannelBox::resizeEvent(QResizeEvent *e) {
	BoxContent::resizeEvent(e);

	_public->moveToLeft(st::boxPadding.left() + st::newGroupPadding.left(), st::boxPadding.top() + st::newGroupPadding.top());
	_private->moveToLeft(st::boxPadding.left() + st::newGroupPadding.left(), _public->bottomNoMargins() + _aboutPublicHeight + st::newGroupSkip);

	_link->resize(width() - st::boxPadding.left() - st::newGroupLinkPadding.left() - st::boxPadding.right(), _link->height());
	_link->moveToLeft(st::boxPadding.left() + st::newGroupLinkPadding.left(), _private->bottomNoMargins() + _aboutPrivate.countHeight(_aboutPublicWidth) + st::newGroupSkip + st::newGroupPadding.bottom() + st::newGroupLinkPadding.top());
	_invitationLink = QRect(_link->x(), _link->y() + (_link->height() / 2) - st::boxTextFont->height, _link->width(), 2 * st::boxTextFont->height);
}

void SetupChannelBox::mouseMoveEvent(QMouseEvent *e) {
	updateSelected(e->globalPos());
}

void SetupChannelBox::mousePressEvent(QMouseEvent *e) {
	if (_linkOver) {
		Application::clipboard()->setText(_channel->inviteLink());

		Ui::Toast::Config toast;
		toast.text = lang(lng_create_channel_link_copied);
		Ui::Toast::Show(App::wnd(), toast);
	}
}

void SetupChannelBox::leaveEvent(QEvent *e) {
	updateSelected(QCursor::pos());
}

void SetupChannelBox::updateSelected(const QPoint &cursorGlobalPosition) {
	QPoint p(mapFromGlobal(cursorGlobalPosition));

	bool linkOver = _invitationLink.contains(p);
	if (linkOver != _linkOver) {
		_linkOver = linkOver;
		update();
		setCursor(_linkOver ? style::cur_pointer : style::cur_default);
	}
}

void SetupChannelBox::closeHook() {
	if (!_existing) {
		Ui::show(Box<ContactsBox>(_channel));
	}
}

void SetupChannelBox::onSave() {
	if (!_public->checked()) {
		if (_existing) {
			_sentUsername = QString();
			_saveRequestId = MTP::send(MTPchannels_UpdateUsername(_channel->inputChannel, MTP_string(_sentUsername)), rpcDone(&SetupChannelBox::onUpdateDone), rpcFail(&SetupChannelBox::onUpdateFail));
		} else {
			closeBox();
		}
	}

	if (_saveRequestId) return;

	QString link = _link->text().trimmed();
	if (link.isEmpty()) {
		_link->setFocus();
		_link->showError();
		return;
	}

	_sentUsername = link;
	_saveRequestId = MTP::send(MTPchannels_UpdateUsername(_channel->inputChannel, MTP_string(_sentUsername)), rpcDone(&SetupChannelBox::onUpdateDone), rpcFail(&SetupChannelBox::onUpdateFail));
}

void SetupChannelBox::onChange() {
	QString name = _link->text().trimmed();
	if (name.isEmpty()) {
		if (!_errorText.isEmpty() || !_goodText.isEmpty()) {
			_errorText = _goodText = QString();
			update();
		}
		_checkTimer.stop();
	} else {
		int32 len = name.size();
		for (int32 i = 0; i < len; ++i) {
			QChar ch = name.at(i);
			if ((ch < 'A' || ch > 'Z') && (ch < 'a' || ch > 'z') && (ch < '0' || ch > '9') && ch != '_') {
				if (_errorText != lang(lng_create_channel_link_bad_symbols)) {
					_errorText = lang(lng_create_channel_link_bad_symbols);
					update();
				}
				_checkTimer.stop();
				return;
			}
		}
		if (name.size() < MinUsernameLength) {
			if (_errorText != lang(lng_create_channel_link_too_short)) {
				_errorText = lang(lng_create_channel_link_too_short);
				update();
			}
			_checkTimer.stop();
		} else {
			if (!_errorText.isEmpty() || !_goodText.isEmpty()) {
				_errorText = _goodText = QString();
				update();
			}
			_checkTimer.start(UsernameCheckTimeout);
		}
	}
}

void SetupChannelBox::onCheck() {
	if (_checkRequestId) {
		MTP::cancel(_checkRequestId);
	}
	QString link = _link->text().trimmed();
	if (link.size() >= MinUsernameLength) {
		_checkUsername = link;
		_checkRequestId = MTP::send(MTPchannels_CheckUsername(_channel->inputChannel, MTP_string(link)), rpcDone(&SetupChannelBox::onCheckDone), rpcFail(&SetupChannelBox::onCheckFail));
	}
}

void SetupChannelBox::onPrivacyChange() {
	if (_public->checked()) {
		if (_tooMuchUsernames) {
			_private->setChecked(true);
			Ui::show(Box<RevokePublicLinkBox>(base::lambda_guarded(this, [this] {
				_tooMuchUsernames = false;
				_public->setChecked(true);
				onCheck();
			})), KeepOtherLayers);
			return;
		}
		_link->show();
		_link->setDisplayFocused(true);
		_link->setFocus();
	} else {
		_link->hide();
		setFocus();
	}
	if (_channel->isMegagroup()) {
		updateMaxHeight();
	}
	update();
}

void SetupChannelBox::onUpdateDone(const MTPBool &result) {
	_channel->setName(textOneLine(_channel->name), _sentUsername);
	closeBox();
}

bool SetupChannelBox::onUpdateFail(const RPCError &error) {
	if (MTP::isDefaultHandledError(error)) return false;

	_saveRequestId = 0;
	QString err(error.type());
	if (err == "USERNAME_NOT_MODIFIED" || _sentUsername == _channel->username) {
		_channel->setName(textOneLine(_channel->name), textOneLine(_sentUsername));
		closeBox();
		return true;
	} else if (err == "USERNAME_INVALID") {
		_link->setFocus();
		_link->showError();
		_errorText = lang(lng_create_channel_link_invalid);
		update();
		return true;
	} else if (err == "USERNAME_OCCUPIED" || err == "USERNAMES_UNAVAILABLE") {
		_link->setFocus();
		_link->showError();
		_errorText = lang(lng_create_channel_link_occupied);
		update();
		return true;
	}
	_link->setFocus();
	return true;
}

void SetupChannelBox::onCheckDone(const MTPBool &result) {
	_checkRequestId = 0;
	QString newError = (mtpIsTrue(result) || _checkUsername == _channel->username) ? QString() : lang(lng_create_channel_link_occupied);
	QString newGood = newError.isEmpty() ? lang(lng_create_channel_link_available) : QString();
	if (_errorText != newError || _goodText != newGood) {
		_errorText = newError;
		_goodText = newGood;
		update();
	}
}

bool SetupChannelBox::onCheckFail(const RPCError &error) {
	if (MTP::isDefaultHandledError(error)) return false;

	_checkRequestId = 0;
	QString err(error.type());
	if (err == qstr("CHANNEL_PUBLIC_GROUP_NA")) {
		Ui::hideLayer();
		return true;
	} else if (err == qstr("CHANNELS_ADMIN_PUBLIC_TOO_MUCH")) {
		if (_existing) {
			showRevokePublicLinkBoxForEdit();
		} else {
			_tooMuchUsernames = true;
			_private->setChecked(true);
			onPrivacyChange();
		}
		return true;
	} else if (err == qstr("USERNAME_INVALID")) {
		_errorText = lang(lng_create_channel_link_invalid);
		update();
		return true;
	} else if (err == qstr("USERNAME_OCCUPIED") && _checkUsername != _channel->username) {
		_errorText = lang(lng_create_channel_link_occupied);
		update();
		return true;
	}
	_goodText = QString();
	_link->setFocus();
	return true;
}

void SetupChannelBox::showRevokePublicLinkBoxForEdit() {
	closeBox();
	Ui::show(Box<RevokePublicLinkBox>([channel = _channel, existing = _existing]() {
		Ui::show(Box<SetupChannelBox>(channel, existing), KeepOtherLayers);
	}), KeepOtherLayers);
}

bool SetupChannelBox::onFirstCheckFail(const RPCError &error) {
	if (MTP::isDefaultHandledError(error)) return false;

	_checkRequestId = 0;
	QString err(error.type());
	if (err == qstr("CHANNEL_PUBLIC_GROUP_NA")) {
		Ui::hideLayer();
		return true;
	} else if (err == qstr("CHANNELS_ADMIN_PUBLIC_TOO_MUCH")) {
		if (_existing) {
			showRevokePublicLinkBoxForEdit();
		} else {
			_tooMuchUsernames = true;
			_private->setChecked(true);
			onPrivacyChange();
		}
		return true;
	}
	_goodText = QString();
	_link->setFocus();
	return true;
}

EditNameTitleBox::EditNameTitleBox(QWidget*, PeerData *peer)
: _peer(peer)
, _first(this, st::defaultInputField, lang(peer->isUser() ? lng_signup_firstname : lng_dlg_new_group_name), peer->isUser() ? peer->asUser()->firstName : peer->name)
, _last(this, st::defaultInputField, lang(lng_signup_lastname), peer->isUser() ? peer->asUser()->lastName : QString())
, _invertOrder(!peer->isChat() && langFirstNameGoesSecond()) {
}

void EditNameTitleBox::prepare() {
	auto newHeight = st::contactPadding.top() + _first->height();
	if (_peer->isUser()) {
		setTitle(lang(_peer == App::self() ? lng_edit_self_title : lng_edit_contact_title));
		newHeight += st::contactSkip + _last->height();
	} else if (_peer->isChat()) {
		setTitle(lang(lng_edit_group_title));
	}
	newHeight += st::boxPadding.bottom() + st::contactPadding.bottom();
	setDimensions(st::boxWideWidth, newHeight);

	addButton(lang(lng_settings_save), [this] { onSave(); });
	addButton(lang(lng_cancel), [this] { closeBox(); });
	if (_invertOrder) {
		setTabOrder(_last, _first);
	}
	_first->setMaxLength(MaxGroupChannelTitle);
	_last->setMaxLength(MaxGroupChannelTitle);

	connect(_first, SIGNAL(submitted(bool)), this, SLOT(onSubmit()));
	connect(_last, SIGNAL(submitted(bool)), this, SLOT(onSubmit()));
	_last->setVisible(!_peer->isChat());
}

void EditNameTitleBox::setInnerFocus() {
	(_invertOrder ? _last : _first)->setFocusFast();
}

void EditNameTitleBox::onSubmit() {
	if (_first->hasFocus()) {
		if (_peer->isChat()) {
			if (_first->getLastText().trimmed().isEmpty()) {
				_first->setFocus();
				_first->showError();
			} else {
				onSave();
			}
		} else {
			_last->setFocus();
		}
	} else if (_last->hasFocus()) {
		if (_first->getLastText().trimmed().isEmpty()) {
			_first->setFocus();
			_first->showError();
		} else if (_last->getLastText().trimmed().isEmpty()) {
			_last->setFocus();
			_last->showError();
		} else {
			onSave();
		}
	}
}

void EditNameTitleBox::resizeEvent(QResizeEvent *e) {
	BoxContent::resizeEvent(e);

	_first->resize(width() - st::boxPadding.left() - st::newGroupInfoPadding.left() - st::boxPadding.right(), _first->height());
	_last->resize(_first->size());
	if (_invertOrder) {
		_last->moveToLeft(st::boxPadding.left() + st::newGroupInfoPadding.left(), st::contactPadding.top());
		_first->moveToLeft(st::boxPadding.left() + st::newGroupInfoPadding.left(), _last->y() + _last->height() + st::contactSkip);
	} else {
		_first->moveToLeft(st::boxPadding.left() + st::newGroupInfoPadding.left(), st::contactPadding.top());
		_last->moveToLeft(st::boxPadding.left() + st::newGroupInfoPadding.left(), _first->y() + _first->height() + st::contactSkip);
	}
}

void EditNameTitleBox::onSave() {
	if (_requestId) return;

	QString first = prepareText(_first->getLastText()), last = prepareText(_last->getLastText());
	if (first.isEmpty() && last.isEmpty()) {
		if (_invertOrder) {
			_last->setFocus();
			_last->showError();
		} else {
			_first->setFocus();
			_first->showError();
		}
		return;
	}
	if (first.isEmpty()) {
		first = last;
		last = QString();
	}
	_sentName = first;
	if (_peer == App::self()) {
		MTPaccount_UpdateProfile::Flags flags = MTPaccount_UpdateProfile::Flag::f_first_name | MTPaccount_UpdateProfile::Flag::f_last_name;
		_requestId = MTP::send(MTPaccount_UpdateProfile(MTP_flags(flags), MTP_string(first), MTP_string(last), MTPstring()), rpcDone(&EditNameTitleBox::onSaveSelfDone), rpcFail(&EditNameTitleBox::onSaveSelfFail));
	} else if (_peer->isChat()) {
		_requestId = MTP::send(MTPmessages_EditChatTitle(_peer->asChat()->inputChat, MTP_string(first)), rpcDone(&EditNameTitleBox::onSaveChatDone), rpcFail(&EditNameTitleBox::onSaveChatFail));
	}
}

void EditNameTitleBox::onSaveSelfDone(const MTPUser &user) {
	App::feedUsers(MTP_vector<MTPUser>(1, user));
	closeBox();
}

bool EditNameTitleBox::onSaveSelfFail(const RPCError &error) {
	if (MTP::isDefaultHandledError(error)) return false;

	QString err(error.type());
	QString first = textOneLine(_first->getLastText().trimmed()), last = textOneLine(_last->getLastText().trimmed());
	if (err == "NAME_NOT_MODIFIED") {
		App::self()->setName(first, last, QString(), textOneLine(App::self()->username));
		closeBox();
		return true;
	} else if (err == "FIRSTNAME_INVALID") {
		_first->setFocus();
		_first->showError();
		return true;
	} else if (err == "LASTNAME_INVALID") {
		_last->setFocus();
		_last->showError();
		return true;
	}
	_first->setFocus();
	return true;
}

bool EditNameTitleBox::onSaveChatFail(const RPCError &error) {
	if (MTP::isDefaultHandledError(error)) return false;

	_requestId = 0;
	QString err(error.type());
	if (err == qstr("CHAT_TITLE_NOT_MODIFIED") || err == qstr("CHAT_NOT_MODIFIED")) {
		if (auto chatData = _peer->asChat()) {
			chatData->setName(_sentName);
		}
		closeBox();
		return true;
	} else if (err == qstr("NO_CHAT_TITLE")) {
		_first->setFocus();
		_first->showError();
		return true;
	}
	_first->setFocus();
	return true;
}

void EditNameTitleBox::onSaveChatDone(const MTPUpdates &updates) {
	App::main()->sentUpdatesReceived(updates);
	closeBox();
}

EditChannelBox::EditChannelBox(QWidget*, ChannelData *channel)
: _channel(channel)
, _title(this, st::defaultInputField, lang(lng_dlg_new_channel_name), _channel->name)
, _description(this, st::newGroupDescription, lang(lng_create_group_description), _channel->about())
, _sign(this, lang(lng_edit_sign_messages), channel->addsSignature(), st::defaultBoxCheckbox)
, _publicLink(this, lang(channel->isPublic() ? lng_profile_edit_public_link : lng_profile_create_public_link), st::boxLinkButton) {
}

void EditChannelBox::prepare() {
	setTitle(lang(_channel->isMegagroup() ? lng_edit_group : lng_edit_channel_title));

	addButton(lang(lng_settings_save), [this] { onSave(); });
	addButton(lang(lng_cancel), [this] { closeBox(); });

	connect(App::main(), SIGNAL(peerNameChanged(PeerData*, const PeerData::Names&, const PeerData::NameFirstChars&)), this, SLOT(peerUpdated(PeerData*)));

	setMouseTracking(true);

	_title->setMaxLength(MaxGroupChannelTitle);
	_description->setMaxLength(MaxChannelDescription);

	connect(_description, SIGNAL(resized()), this, SLOT(onDescriptionResized()));
	connect(_description, SIGNAL(submitted(bool)), this, SLOT(onSave()));
	connect(_description, SIGNAL(cancelled()), this, SLOT(onClose()));

	connect(_publicLink, SIGNAL(clicked()), this, SLOT(onPublicLink()));
	_publicLink->setVisible(_channel->canEditUsername());
	_sign->setVisible(!_channel->isMegagroup());

	updateMaxHeight();
}

void EditChannelBox::setInnerFocus() {
	_title->setFocusFast();
}

void EditChannelBox::keyPressEvent(QKeyEvent *e) {
	if (e->key() == Qt::Key_Enter || e->key() == Qt::Key_Return) {
		if (_title->hasFocus()) {
			onSave();
		}
	} else {
		BoxContent::keyPressEvent(e);
	}
}

void EditChannelBox::peerUpdated(PeerData *peer) {
	if (peer == _channel) {
		_publicLink->setText(lang(_channel->isPublic() ? lng_profile_edit_public_link : lng_profile_create_public_link));
		_sign->setChecked(_channel->addsSignature());
	}
}

void EditChannelBox::onDescriptionResized() {
	updateMaxHeight();
	update();
}

void EditChannelBox::updateMaxHeight() {
	auto newHeight = st::newGroupInfoPadding.top() + _title->height();
	newHeight += st::newGroupDescriptionPadding.top() + _description->height() + st::newGroupDescriptionPadding.bottom();
	if (!_channel->isMegagroup()) {
		newHeight += st::newGroupPublicLinkPadding.top() + _sign->heightNoMargins() + st::newGroupPublicLinkPadding.bottom();
	}
	if (_channel->canEditUsername()) {
		newHeight += st::newGroupPublicLinkPadding.top() + _publicLink->height() + st::newGroupPublicLinkPadding.bottom();
	}
	newHeight += st::boxPadding.bottom() + st::newGroupInfoPadding.bottom();
	setDimensions(st::boxWideWidth, newHeight);
}

void EditChannelBox::resizeEvent(QResizeEvent *e) {
	BoxContent::resizeEvent(e);

	_title->resize(width() - st::boxPadding.left() - st::newGroupInfoPadding.left() - st::boxPadding.right(), _title->height());
	_title->moveToLeft(st::boxPadding.left() + st::newGroupInfoPadding.left(), st::newGroupInfoPadding.top() + st::newGroupNamePosition.y());

	_description->resize(width() - st::boxPadding.left() - st::newGroupInfoPadding.left() - st::boxPadding.right(), _description->height());
	_description->moveToLeft(st::boxPadding.left() + st::newGroupInfoPadding.left(), _title->y() + _title->height() + st::newGroupDescriptionPadding.top());

	_sign->moveToLeft(st::boxPadding.left() + st::newGroupInfoPadding.left(), _description->y() + _description->height() + st::newGroupDescriptionPadding.bottom() + st::newGroupPublicLinkPadding.top());

	if (_channel->isMegagroup()) {
		_publicLink->moveToLeft(st::boxPadding.left() + st::newGroupInfoPadding.left(), _description->y() + _description->height() + st::newGroupDescriptionPadding.bottom() + st::newGroupPublicLinkPadding.top());
	} else {
		_publicLink->moveToLeft(st::boxPadding.left() + st::newGroupInfoPadding.left(), _sign->bottomNoMargins() + st::newGroupDescriptionPadding.bottom() + st::newGroupPublicLinkPadding.top());
	}
}

void EditChannelBox::onSave() {
	if (_saveTitleRequestId || _saveDescriptionRequestId || _saveSignRequestId) return;

	QString title = prepareText(_title->getLastText()), description = prepareText(_description->getLastText(), true);
	if (title.isEmpty()) {
		_title->setFocus();
		_title->showError();
		return;
	}
	_sentTitle = title;
	_sentDescription = description;
	if (_sentTitle == _channel->name) {
		saveDescription();
	} else {
		_saveTitleRequestId = MTP::send(MTPchannels_EditTitle(_channel->inputChannel, MTP_string(_sentTitle)), rpcDone(&EditChannelBox::onSaveTitleDone), rpcFail(&EditChannelBox::onSaveFail));
	}
}

void EditChannelBox::onPublicLink() {
	Ui::show(Box<SetupChannelBox>(_channel, true), KeepOtherLayers);
}

void EditChannelBox::saveDescription() {
	if (_sentDescription == _channel->about()) {
		saveSign();
	} else {
		_saveDescriptionRequestId = MTP::send(MTPchannels_EditAbout(_channel->inputChannel, MTP_string(_sentDescription)), rpcDone(&EditChannelBox::onSaveDescriptionDone), rpcFail(&EditChannelBox::onSaveFail));
	}
}

void EditChannelBox::saveSign() {
	if (_channel->isMegagroup() || _channel->addsSignature() == _sign->checked()) {
		closeBox();
	} else {
		_saveSignRequestId = MTP::send(MTPchannels_ToggleSignatures(_channel->inputChannel, MTP_bool(_sign->checked())), rpcDone(&EditChannelBox::onSaveSignDone), rpcFail(&EditChannelBox::onSaveFail));
	}
}

bool EditChannelBox::onSaveFail(const RPCError &error, mtpRequestId req) {
	if (MTP::isDefaultHandledError(error)) return false;

	QString err(error.type());
	if (req == _saveTitleRequestId) {
		_saveTitleRequestId = 0;
		if (err == qstr("CHAT_NOT_MODIFIED") || err == qstr("CHAT_TITLE_NOT_MODIFIED")) {
			_channel->setName(_sentTitle, _channel->username);
			saveDescription();
			return true;
		} else if (err == qstr("NO_CHAT_TITLE")) {
			_title->setFocus();
			_title->showError();
			return true;
		} else {
			_title->setFocus();
		}
	} else if (req == _saveDescriptionRequestId) {
		_saveDescriptionRequestId = 0;
		if (err == qstr("CHAT_ABOUT_NOT_MODIFIED")) {
			if (_channel->setAbout(_sentDescription)) {
				if (App::api()) {
					emit App::api()->fullPeerUpdated(_channel);
				}
			}
			saveSign();
			return true;
		} else {
			_description->setFocus();
		}
	} else if (req == _saveSignRequestId) {
		_saveSignRequestId = 0;
		if (err == qstr("CHAT_NOT_MODIFIED")) {
			closeBox();
			return true;
		}
	}
	return true;
}

void EditChannelBox::onSaveTitleDone(const MTPUpdates &updates) {
	_saveTitleRequestId = 0;
	if (App::main()) {
		App::main()->sentUpdatesReceived(updates);
	}
	saveDescription();
}

void EditChannelBox::onSaveDescriptionDone(const MTPBool &result) {
	_saveDescriptionRequestId = 0;
	if (_channel->setAbout(_sentDescription)) {
		if (App::api()) {
			emit App::api()->fullPeerUpdated(_channel);
		}
	}
	saveSign();
}

void EditChannelBox::onSaveSignDone(const MTPUpdates &updates) {
	_saveSignRequestId = 0;
	if (App::main()) {
		App::main()->sentUpdatesReceived(updates);
	}
	closeBox();
}

RevokePublicLinkBox::RevokePublicLinkBox(QWidget*, base::lambda<void()> &&revokeCallback)
: _rowHeight(st::contactsPadding.top() + st::contactsPhotoSize + st::contactsPadding.bottom())
, _revokeWidth(st::normalFont->width(lang(lng_channels_too_much_public_revoke)))
, _aboutRevoke(this, lang(lng_channels_too_much_public_about), Ui::FlatLabel::InitType::Simple, st::aboutRevokePublicLabel)
, _revokeCallback(std_::move(revokeCallback)) {
}

void RevokePublicLinkBox::prepare() {
	setMouseTracking(true);

	MTP::send(MTPchannels_GetAdminedPublicChannels(), rpcDone(&RevokePublicLinkBox::getPublicDone), rpcFail(&RevokePublicLinkBox::getPublicFail));

	addButton(lang(lng_cancel), [this] { closeBox(); });

	subscribe(FileDownload::ImageLoaded(), [this] { update(); });

	updateMaxHeight();
}

void RevokePublicLinkBox::updateMaxHeight() {
	_rowsTop = st::boxPadding.top() + _aboutRevoke->height() + st::boxPadding.top();
	setDimensions(st::boxWideWidth, _rowsTop + (5 * _rowHeight));
}

void RevokePublicLinkBox::mouseMoveEvent(QMouseEvent *e) {
	updateSelected();
}

void RevokePublicLinkBox::updateSelected() {
	auto point = mapFromGlobal(QCursor::pos());
	PeerData *selected = nullptr;
	auto top = _rowsTop;
	for_const (auto &row, _rows) {
		auto revokeLink = rtlrect(width() - st::contactsPadding.right() - st::contactsCheckPosition.x() - _revokeWidth, top + st::contactsPadding.top() + (st::contactsPhotoSize - st::normalFont->height) / 2, _revokeWidth, st::normalFont->height, width());
		if (revokeLink.contains(point)) {
			selected = row.peer;
			break;
		}
		top += _rowHeight;
	}
	if (selected != _selected) {
		_selected = selected;
		setCursor((_selected || _pressed) ? style::cur_pointer : style::cur_default);
		update();
	}
}

void RevokePublicLinkBox::mousePressEvent(QMouseEvent *e) {
	if (_pressed != _selected) {
		_pressed = _selected;
		update();
	}
}

void RevokePublicLinkBox::mouseReleaseEvent(QMouseEvent *e) {
	auto pressed = base::take(_pressed);
	setCursor((_selected || _pressed) ? style::cur_pointer : style::cur_default);
	if (pressed && pressed == _selected) {
		auto text_method = pressed->isMegagroup() ? lng_channels_too_much_public_revoke_confirm_group : lng_channels_too_much_public_revoke_confirm_channel;
		auto text = text_method(lt_link, qsl("telegram.me/") + pressed->userName(), lt_group, pressed->name);
		auto confirmText = lang(lng_channels_too_much_public_revoke);
		_weakRevokeConfirmBox = Ui::show(Box<ConfirmBox>(text, confirmText, base::lambda_guarded(this, [this, pressed]() {
			if (_revokeRequestId) return;
			_revokeRequestId = MTP::send(MTPchannels_UpdateUsername(pressed->asChannel()->inputChannel, MTP_string("")), rpcDone(&RevokePublicLinkBox::revokeLinkDone), rpcFail(&RevokePublicLinkBox::revokeLinkFail));
		})), KeepOtherLayers);
	}
}

void RevokePublicLinkBox::paintEvent(QPaintEvent *e) {
	BoxContent::paintEvent(e);

	Painter p(this);
	p.translate(0, _rowsTop);
	for_const (auto &row, _rows) {
		paintChat(p, row, (row.peer == _selected));
		p.translate(0, _rowHeight);
	}
}

void RevokePublicLinkBox::resizeEvent(QResizeEvent *e) {
	BoxContent::resizeEvent(e);

	_aboutRevoke->moveToLeft(st::boxPadding.left(), st::boxPadding.top());
}

void RevokePublicLinkBox::paintChat(Painter &p, const ChatRow &row, bool selected) const {
	auto peer = row.peer;
	peer->paintUserpicLeft(p, st::contactsPhotoSize, st::contactsPadding.left(), st::contactsPadding.top(), width());

	p.setPen(st::contactsNameFg);

	int32 namex = st::contactsPadding.left() + st::contactsPhotoSize + st::contactsPadding.left();
	int32 namew = width() - namex - st::contactsPadding.right() - (_revokeWidth + st::contactsCheckPosition.x() * 2);
	if (peer->isVerified()) {
		auto icon = &st::dialogsVerifiedIcon;
		namew -= icon->width();
		icon->paint(p, namex + qMin(row.name.maxWidth(), namew), st::contactsPadding.top() + st::contactsNameTop, width());
	}
	row.name.drawLeftElided(p, namex, st::contactsPadding.top() + st::contactsNameTop, namew, width());

	p.setFont(selected ? st::linkOverFont : st::linkFont);
	p.setPen(selected ? st::defaultLinkButton.overColor : st::defaultLinkButton.color);
	p.drawTextRight(st::contactsPadding.right() + st::contactsCheckPosition.x(), st::contactsPadding.top() + (st::contactsPhotoSize - st::normalFont->height) / 2, width(), lang(lng_channels_too_much_public_revoke), _revokeWidth);

	p.setPen(st::contactsStatusFg);
	textstyleSet(&st::revokePublicLinkStatusStyle);
	row.status.drawLeftElided(p, namex, st::contactsPadding.top() + st::contactsStatusTop, namew, width());
	textstyleRestore();
}

void RevokePublicLinkBox::getPublicDone(const MTPmessages_Chats &result) {
	if (auto chats = Api::getChatsFromMessagesChats(result)) {
		for_const (auto &chat, chats->c_vector().v) {
			if (auto peer = App::feedChat(chat)) {
				if (!peer->isChannel() || peer->userName().isEmpty()) continue;

				ChatRow row;
				row.peer = peer;
				row.name.setText(st::contactsNameFont, peer->name, _textNameOptions);
				textstyleSet(&st::revokePublicLinkStatusStyle);
				row.status.setText(st::normalFont, qsl("telegram.me/") + textcmdLink(1, peer->userName()), _textDlgOptions);
				textstyleRestore();
				_rows.push_back(std_::move(row));
			}
		}
	}
	update();
}

bool RevokePublicLinkBox::getPublicFail(const RPCError &error) {
	if (MTP::isDefaultHandledError(error)) {
		return false;
	}

	return true;
}

void RevokePublicLinkBox::revokeLinkDone(const MTPBool &result) {
	if (_weakRevokeConfirmBox) {
		_weakRevokeConfirmBox->closeBox();
	}
	closeBox();
	if (_revokeCallback) {
		_revokeCallback();
	}
}

bool RevokePublicLinkBox::revokeLinkFail(const RPCError &error) {
	if (MTP::isDefaultHandledError(error)) {
		return false;
	}

	return true;
}