////  ChatWindow.cpp//  interface/src/ui////  Created by Dimitar Dobrev on 3/6/14.//  Copyright 2014 High Fidelity, Inc.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html// #include <QGridLayout>#include <QFrame>#include <QLayoutItem>#include <QPalette>#include <QScrollBar>#include <QSizePolicy>#include <QTimer> #include <AddressManager.h>#include <AccountManager.h> #include "Application.h"#include "ChatMessageArea.h"#include "FlowLayout.h"#include "qtimespan.h"#include "UIUtil.h"#include "XmppClient.h" #include "ui_chatWindow.h"#include "ChatWindow.h"  const int NUM_MESSAGES_TO_TIME_STAMP = 20; const QRegularExpression regexLinks("((?:(?:ftp)|(?:https?)|(?:hifi))://\\S+)");const QRegularExpression regexHifiLinks("([#@]\\S+)");const QString mentionSoundsPath("/mention-sounds/");const QString mentionRegex("@(\\b%1\\b)"); ChatWindow::ChatWindow(QWidget* parent) :    QWidget(parent, Qt::Window | Qt::CustomizeWindowHint | Qt::WindowTitleHint | Qt::WindowMinMaxButtonsHint |            Qt::WindowCloseButtonHint),    _ui(new Ui::ChatWindow),    _numMessagesAfterLastTimeStamp(0),    _mousePressed(false),    _mouseStartPosition(),    _trayIcon(parent),    _effectPlayer(){    setAttribute(Qt::WA_DeleteOnClose, false);     _ui->setupUi(this);     FlowLayout* flowLayout = new FlowLayout(0, 4, 4);    _ui->usersWidget->setLayout(flowLayout);     _ui->messagePlainTextEdit->installEventFilter(this);    _ui->messagePlainTextEdit->setWordWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);     QTextCursor cursor(_ui->messagePlainTextEdit->textCursor());     cursor.movePosition(QTextCursor::Start);     QTextBlockFormat format = cursor.blockFormat();    format.setLineHeight(130, QTextBlockFormat::ProportionalHeight);     cursor.setBlockFormat(format);     _ui->messagePlainTextEdit->setTextCursor(cursor);     if (!AccountManager::getInstance().isLoggedIn()) {        _ui->connectingToXMPPLabel->setText(tr("You must be logged in to chat with others."));    } #ifdef HAVE_QXMPP    const QXmppClient& xmppClient = XmppClient::getInstance().getXMPPClient();    if (xmppClient.isConnected()) {        participantsChanged();        const QXmppMucRoom* publicChatRoom = XmppClient::getInstance().getPublicChatRoom();        connect(publicChatRoom, SIGNAL(participantsChanged()), this, SLOT(participantsChanged()));        _ui->connectingToXMPPLabel->hide();        startTimerForTimeStamps();    } else {        _ui->numOnlineLabel->hide();        _ui->usersArea->hide();        _ui->messagesScrollArea->hide();        _ui->messagePlainTextEdit->hide();        connect(&XmppClient::getInstance(), SIGNAL(joinedPublicChatRoom()), this, SLOT(connected()));    }    connect(&xmppClient, SIGNAL(messageReceived(QXmppMessage)), this, SLOT(messageReceived(QXmppMessage)));    connect(&_trayIcon, SIGNAL(messageClicked()), this, SLOT(notificationClicked()));#endif // HAVE_QXMPP     QDir mentionSoundsDir(Application::resourcesPath() + mentionSoundsPath);    _mentionSounds = mentionSoundsDir.entryList(QDir::Files);    _trayIcon.setIcon(QIcon( Application::resourcesPath() + "/images/hifi-logo.svg"));} ChatWindow::~ChatWindow() {#ifdef HAVE_QXMPP    const QXmppClient& xmppClient = XmppClient::getInstance().getXMPPClient();    disconnect(&xmppClient, SIGNAL(joinedPublicChatRoom()), this, SLOT(connected()));    disconnect(&xmppClient, SIGNAL(messageReceived(QXmppMessage)), this, SLOT(messageReceived(QXmppMessage)));     const QXmppMucRoom* publicChatRoom = XmppClient::getInstance().getPublicChatRoom();    disconnect(publicChatRoom, SIGNAL(participantsChanged()), this, SLOT(participantsChanged()));#endif // HAVE_QXMPP    delete _ui;} void ChatWindow::keyPressEvent(QKeyEvent* event) {    if (event->key() == Qt::Key_Escape) {        Application::getInstance()->getWindow()->activateWindow();        hide();    } else {        QWidget::keyPressEvent(event);    }} void ChatWindow::showEvent(QShowEvent* event) {    QWidget::showEvent(event);     if (!event->spontaneous()) {        _ui->messagePlainTextEdit->setFocus();    }    const QRect parentGeometry = parentWidget()->geometry();    int titleBarHeight = UIUtil::getWindowTitleBarHeight(this);    int menuBarHeight = Menu::getInstance()->geometry().height();    int topMargin = titleBarHeight + menuBarHeight;     setGeometry(parentGeometry.topRight().x() - size().width() + 1, parentGeometry.topRight().y() + topMargin,                size().width(), parentWidget()->height() - topMargin);     Application::processEvents();     scrollToBottom(); #ifdef HAVE_QXMPP    const QXmppClient& xmppClient = XmppClient::getInstance().getXMPPClient();    if (xmppClient.isConnected()) {        participantsChanged();    }#endif // HAVE_QXMPP} bool ChatWindow::eventFilter(QObject* sender, QEvent* event) {    if (sender == _ui->messagePlainTextEdit) {        if (event->type() != QEvent::KeyPress) {            return false;        }        QKeyEvent* keyEvent = static_cast<QKeyEvent*>(event);        if ((keyEvent->key() == Qt::Key_Return || keyEvent->key() == Qt::Key_Enter) &&            (keyEvent->modifiers() & Qt::ShiftModifier) == 0) {            QString messageText = _ui->messagePlainTextEdit->document()->toPlainText().trimmed();            if (!messageText.isEmpty()) {#ifdef HAVE_QXMPP                const QXmppMucRoom* publicChatRoom = XmppClient::getInstance().getPublicChatRoom();                QXmppMessage message;                message.setTo(publicChatRoom->jid());                message.setType(QXmppMessage::GroupChat);                message.setBody(messageText);                XmppClient::getInstance().getXMPPClient().sendPacket(message);#endif // HAVE_QXMPP                QTextCursor cursor = _ui->messagePlainTextEdit->textCursor();                cursor.select(QTextCursor::Document);                cursor.removeSelectedText();            }            return true;        }    } else if (event->type() == QEvent::MouseButtonRelease) {        QVariant userVar = sender->property("user");        if (userVar.isValid()) {            AddressManager::getInstance().goToUser(userVar.toString());            return true;        }    }    return QWidget::eventFilter(sender, event);} void ChatWindow::addTimeStamp() {    QTimeSpan timePassed = QDateTime::currentDateTime() - _lastMessageStamp;    int times[] = { timePassed.daysPart(), timePassed.hoursPart(), timePassed.minutesPart() };    QString strings[] = { tr("%n day(s)", 0, times[0]), tr("%n hour(s)", 0, times[1]), tr("%n minute(s)", 0, times[2]) };    QString timeString = "";    for (int i = 0; i < 3; i++) {        if (times[i] > 0) {            timeString += strings[i] + " ";        }    }    timeString.chop(1);    if (!timeString.isEmpty()) {        QLabel* timeLabel = new QLabel(timeString);        timeLabel->setStyleSheet("color: #333333;"                                 "background-color: white;"                                 "font-size: 14px;"                                 "padding: 4px;");        timeLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);        timeLabel->setAlignment(Qt::AlignLeft);         bool atBottom = isNearBottom();         _ui->messagesVBoxLayout->addWidget(timeLabel);        _ui->messagesVBoxLayout->parentWidget()->updateGeometry();         Application::processEvents();        _numMessagesAfterLastTimeStamp = 0;         if (atBottom) {            scrollToBottom();        }    }} void ChatWindow::startTimerForTimeStamps() {    QTimer* timer = new QTimer(this);    timer->setInterval(10 * 60 * 1000);    connect(timer, SIGNAL(timeout()), this, SLOT(timeout()));    timer->start();} void ChatWindow::connected() {    _ui->connectingToXMPPLabel->hide();    _ui->numOnlineLabel->show();    _ui->usersArea->show();    _ui->messagesScrollArea->show();    _ui->messagePlainTextEdit->show();    _ui->messagePlainTextEdit->setFocus();#ifdef HAVE_QXMPP    const QXmppMucRoom* publicChatRoom = XmppClient::getInstance().getPublicChatRoom();    connect(publicChatRoom, SIGNAL(participantsChanged()), this, SLOT(participantsChanged()));#endif // HAVE_QXMPP    startTimerForTimeStamps();} void ChatWindow::timeout() {    if (_numMessagesAfterLastTimeStamp >= NUM_MESSAGES_TO_TIME_STAMP) {        addTimeStamp();    }} #ifdef HAVE_QXMPPvoid ChatWindow::notificationClicked() {    if (parentWidget()->isMinimized()) {        parentWidget()->showNormal();    }    if (isHidden()) {        show();    }     // find last mention    int messageCount = _ui->messagesVBoxLayout->count();    for (unsigned int i = messageCount; i > 0; i--) {        ChatMessageArea* area = (ChatMessageArea*)_ui->messagesVBoxLayout->itemAt(i - 1)->widget();        QRegularExpression usernameMention(mentionRegex.arg(AccountManager::getInstance().getAccountInfo().getUsername()));        if (area->toPlainText().contains(usernameMention)) {            int top = area->geometry().top();            int height = area->geometry().height();             QScrollBar* verticalScrollBar = _ui->messagesScrollArea->verticalScrollBar();            verticalScrollBar->setSliderPosition(top - verticalScrollBar->size().height() + height);            return;        }    }    Application::processEvents();     scrollToBottom();} QString ChatWindow::getParticipantName(const QString& participant) {    const QXmppMucRoom* publicChatRoom = XmppClient::getInstance().getPublicChatRoom();    return participant.right(participant.count() - 1 - publicChatRoom->jid().count());} void ChatWindow::error(QXmppClient::Error error) {    _ui->connectingToXMPPLabel->setText(QString::number(error));} void ChatWindow::participantsChanged() {    bool atBottom = isNearBottom();     QStringList participants = XmppClient::getInstance().getPublicChatRoom()->participants();    _ui->numOnlineLabel->setText(tr("%1 online now:").arg(participants.count()));     while (QLayoutItem* item = _ui->usersWidget->layout()->takeAt(0)) {        delete item->widget();        delete item;    }    foreach (const QString& participant, participants) {        QString participantName = getParticipantName(participant);        QLabel* userLabel = new QLabel();        userLabel->setText(participantName);        userLabel->setStyleSheet("background-color: palette(light);"                                 "border-radius: 5px;"                                 "color: #267077;"                                 "padding-top: 3px;"                                 "padding-right: 2px;"                                 "padding-bottom: 2px;"                                 "padding-left: 2px;"                                 "border: 1px solid palette(shadow);"                                 "font-size: 14px;"                                 "font-weight: bold");        userLabel->setProperty("user", participantName);        userLabel->setCursor(Qt::PointingHandCursor);        userLabel->installEventFilter(this);        _ui->usersWidget->layout()->addWidget(userLabel);    }    Application::processEvents();     if (atBottom) {        scrollToBottom();    }} void ChatWindow::messageReceived(const QXmppMessage& message) {    if (message.type() != QXmppMessage::GroupChat) {        return;    }     // Update background if this is a message from the current user    bool fromSelf = getParticipantName(message.from()) == AccountManager::getInstance().getAccountInfo().getUsername();     // Create message area    ChatMessageArea* messageArea = new ChatMessageArea(true);    messageArea->setWordWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);    messageArea->setTextInteractionFlags(Qt::TextBrowserInteraction);    messageArea->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);    messageArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);    messageArea->setReadOnly(true);     messageArea->setStyleSheet("QTextBrowser{ padding-bottom: 2px;"                               "padding-left: 2px;"                               "padding-top: 2px;"                               "padding-right: 20px;"                               "margin: 0px;"                               "color: #333333;"                               "font-size: 14px;"                               "background-color: rgba(0, 0, 0, 0%);"                               "border: 0; }"                               "QMenu{ border: 2px outset gray; }");     QString userLabel = getParticipantName(message.from());    if (fromSelf) {        userLabel = "<b style=\"color: #4a6f91\">" + userLabel + ": </b>";        messageArea->setStyleSheet(messageArea->styleSheet() + "background-color: #e1e8ea");    } else {        userLabel = "<b>" + userLabel + ": </b>";    }     messageArea->document()->setDefaultStyleSheet("a { text-decoration: none; font-weight: bold; color: #267077;}");    QString messageText = message.body().toHtmlEscaped();    messageText = messageText.replace(regexLinks, "<a href=\"\\1\">\\1</a>");    messageText = messageText.replace(regexHifiLinks, "<a href=\"hifi://\\1\">\\1</a>");    messageArea->setHtml(userLabel + messageText);     bool atBottom = isNearBottom();     _ui->messagesVBoxLayout->addWidget(messageArea);    _ui->messagesVBoxLayout->parentWidget()->updateGeometry();    Application::processEvents();     if (atBottom || fromSelf) {        scrollToBottom();    }     ++_numMessagesAfterLastTimeStamp;    if (message.stamp().isValid()) {        _lastMessageStamp = message.stamp().toLocalTime();    } else {        _lastMessageStamp = QDateTime::currentDateTime();    }     QRegularExpression usernameMention(mentionRegex.arg(AccountManager::getInstance().getAccountInfo().getUsername()));    if (message.body().contains(usernameMention)) {         // Don't show messages already seen in icon tray at start-up.        QSettings* settings = Application::getInstance()->lockSettings();        bool showMessage = settings->value("usernameMentionTimestamp").toDateTime() < _lastMessageStamp;        if (showMessage) {            settings->setValue("usernameMentionTimestamp", _lastMessageStamp);        }        Application::getInstance()->unlockSettings();         if (isHidden() && showMessage) {             if (_effectPlayer.state() != QMediaPlayer::PlayingState) {                // get random sound                QFileInfo inf = QFileInfo(Application::resourcesPath()  +                                          mentionSoundsPath +                                          _mentionSounds.at(rand() % _mentionSounds.size()));                _effectPlayer.setMedia(QUrl::fromLocalFile(inf.absoluteFilePath()));                _effectPlayer.play();            }             _trayIcon.show();            _trayIcon.showMessage(windowTitle(), message.body());        }    }}#endif // HAVE_QXMPP bool ChatWindow::isNearBottom() {    QScrollBar* verticalScrollBar = _ui->messagesScrollArea->verticalScrollBar();    return verticalScrollBar->value() >= verticalScrollBar->maximum() - Ui::AUTO_SCROLL_THRESHOLD;} // Scroll chat message area to bottom.void ChatWindow::scrollToBottom() {    QScrollBar* verticalScrollBar = _ui->messagesScrollArea->verticalScrollBar();    verticalScrollBar->setValue(verticalScrollBar->maximum());} bool ChatWindow::event(QEvent* event) {    if (event->type() == QEvent::WindowActivate) {        _ui->messagePlainTextEdit->setFocus();    }    return QWidget::event(event);}