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/*
 * Copyright (c) 2010-2017 Isode Limited.
 * All rights reserved.
 * See the COPYING file for more information.
 */

#include <Swift/QtUI/QtChatWindow.h>

#include <map>
#include <memory>
#include <string>

#include <boost/cstdint.hpp>
#include <boost/lexical_cast.hpp>

#include <QApplication>
#include <QBoxLayout>
#include <QCloseEvent>
#include <QComboBox>
#include <QCursor>
#include <QDebug>
#include <QFileDialog>
#include <QFileInfo>
#include <QFontMetrics>
#include <QInputDialog>
#include <QLabel>
#include <QLineEdit>
#include <QMenu>
#include <QMessageBox>
#include <QMimeData>
#include <QPoint>
#include <QPushButton>
#include <QSize>
#include <QSplitter>
#include <QString>
#include <QTextDocument>
#include <QTextEdit>
#include <QTime>
#include <QToolButton>
#include <QUrl>

#include <Swiften/Base/Log.h>
#include <Swiften/Base/Platform.h>

#include <Swift/Controllers/Roster/ContactRosterItem.h>
#include <Swift/Controllers/Roster/Roster.h>
#include <Swift/Controllers/Roster/RosterItem.h>
#include <Swift/Controllers/Settings/SettingsProvider.h>
#include <Swift/Controllers/UIEvents/JoinMUCUIEvent.h>
#include <Swift/Controllers/UIEvents/SendFileUIEvent.h>
#include <Swift/Controllers/UIEvents/UIEventStream.h>

#include <SwifTools/EmojiMapper.h>
#include <SwifTools/TabComplete.h>

#include <Swift/QtUI/QtAddBookmarkWindow.h>
#include <Swift/QtUI/QtEditBookmarkWindow.h>
#include <Swift/QtUI/QtEmojisSelector.h>
#include <Swift/QtUI/QtPlainChatView.h>
#include <Swift/QtUI/QtScaledAvatarCache.h>
#include <Swift/QtUI/QtSettingsProvider.h>
#include <Swift/QtUI/QtTextEdit.h>
#include <Swift/QtUI/QtUISettingConstants.h>
#include <Swift/QtUI/QtUtilities.h>
#include <Swift/QtUI/QtWebKitChatView.h>
#include <Swift/QtUI/Roster/QtOccupantListWidget.h>

namespace Swift {

QtChatWindow::QtChatWindow(const QString& contact, QtChatTheme* theme, UIEventStream* eventStream, SettingsProvider* settings, QtSettingsProvider* qtOnlySettings, const std::map<std::string, std::string>& emoticonsMap) : QtTabbable(), id_(Q2PSTRING(contact)), contact_(contact), nextAlertId_(0), eventStream_(eventStream), settings_(settings), qtOnlySettings_(qtOnlySettings), blockingState_(BlockingUnsupported), isMUC_(false), supportsImpromptuChat_(false), roomBookmarkState_(RoomNotBookmarked), emoticonsMap_(emoticonsMap) {
    unreadCount_ = 0;
    isOnline_ = true;
    completer_ = nullptr;
    affiliationEditor_ = nullptr;
    theme_ = theme;
    isCorrection_ = false;
    labelModel_ = nullptr;
    correctionEnabled_ = Maybe;
    fileTransferEnabled_ = Maybe;
    updateTitleWithUnreadCount();
    assert(settings);
    setAcceptDrops(true);

    alertStyleSheet_ = ".QWidget, QTextEdit { background: rgb(255, 255, 153); color: black }";

    QBoxLayout *layout = new QBoxLayout(QBoxLayout::TopToBottom, this);
    layout->setContentsMargins(0,0,0,0);
    layout->setSpacing(2);

    alertLayout_ = new QVBoxLayout();
    layout->addLayout(alertLayout_);

    subjectLayout_ = new QBoxLayout(QBoxLayout::LeftToRight);
    subject_ = new QLineEdit(this);
    subjectLayout_->addWidget(subject_);
    setSubject("");
    subject_->setReadOnly(true);

    QPushButton* actionButton_ = new QPushButton(this);
    actionButton_->setIcon(QIcon(":/icons/actions.png"));
    connect(actionButton_, SIGNAL(clicked()), this, SLOT(handleActionButtonClicked()));
    subject_->hide();

    layout->addLayout(subjectLayout_);

    logRosterSplitter_ = new QSplitter(this);
    logRosterSplitter_->setAutoFillBackground(true);
    layout->addWidget(logRosterSplitter_);
    if (settings_->getSetting(QtUISettingConstants::USE_PLAIN_CHATS) || settings_->getSetting(QtUISettingConstants::USE_SCREENREADER)) {
        messageLog_ = new QtPlainChatView(this, eventStream_);
    }
    else {
        messageLog_ = new QtWebKitChatView(this, eventStream_, theme, this); // I accept that passing the ChatWindow in so that the view can call the signals is somewhat inelegant, but it saves a lot of boilerplate. This patch is unpleasant enough already. So let's fix this soon (it at least needs fixing by the time history is sorted), but not now.
    }
    logRosterSplitter_->addWidget(messageLog_);

    treeWidget_ = new QtOccupantListWidget(eventStream_, settings_, QtTreeWidget::MessageDefaultJID, this);
    treeWidget_->hide();
    logRosterSplitter_->addWidget(treeWidget_);
    logRosterSplitter_->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
    connect(logRosterSplitter_, SIGNAL(splitterMoved(int, int)), this, SLOT(handleSplitterMoved(int, int)));

    midBar_ = new QWidget(this);
    //layout->addWidget(midBar);
    midBar_->setAutoFillBackground(true);
    QHBoxLayout *midBarLayout = new QHBoxLayout(midBar_);
    midBarLayout->setContentsMargins(0,0,0,0);
    midBarLayout->setSpacing(2);
    //midBarLayout->addStretch();

    labelsWidget_ = new QComboBox(this);
    labelsWidget_->setFocusPolicy(Qt::NoFocus);
    labelsWidget_->hide();
    labelsWidget_->setSizeAdjustPolicy(QComboBox::AdjustToContents);
    midBarLayout->addWidget(labelsWidget_,0);
    connect(labelsWidget_, SIGNAL(currentIndexChanged(int)), this, SLOT(handleCurrentLabelChanged(int)));
    defaultLabelsPalette_ = labelsWidget_->palette();

    QHBoxLayout* inputBarLayout = new QHBoxLayout();
    inputBarLayout->setContentsMargins(0,0,0,0);
    inputBarLayout->setSpacing(2);
    input_ = new QtTextEdit(settings_, this);
    input_->setAcceptRichText(false);
    inputBarLayout->addWidget(midBar_);
    inputBarLayout->addWidget(input_);
    correctingLabel_ = new QLabel(tr("Correcting"), this);
    inputBarLayout->addWidget(correctingLabel_);
    correctingLabel_->hide();

    connect(input_, SIGNAL(receivedFocus()), this, SLOT(handleTextInputReceivedFocus()));
    connect(input_, SIGNAL(lostFocus()), this, SLOT(handleTextInputLostFocus()));
    QPushButton* emojisButton_ = new QPushButton(this);

#ifdef SWIFTEN_PLATFORM_MACOSX
    emojisButton_->setText("\xF0\x9F\x98\x83");
#else
    emojisButton_->setIcon(QIcon(":/emoticons/smile.png"));
#endif
    connect(emojisButton_, SIGNAL(clicked()), this, SLOT(handleEmojisButtonClicked()));

    // using an extra layout to work around Qt margin glitches on OS X
    QHBoxLayout* actionLayout = new QHBoxLayout();
    actionLayout->addWidget(emojisButton_);
    actionLayout->addWidget(actionButton_);

    inputBarLayout->addLayout(actionLayout);
    layout->addLayout(inputBarLayout);

    inputClearing_ = false;
    contactIsTyping_ = false;
    tabCompletion_ = false;

    connect(input_, SIGNAL(unhandledKeyPressEvent(QKeyEvent*)), this, SLOT(handleKeyPressEvent(QKeyEvent*)));
    connect(input_, SIGNAL(returnPressed()), this, SLOT(returnPressed()));
    connect(input_, SIGNAL(textChanged()), this, SLOT(handleInputChanged()));
    connect(input_, SIGNAL(cursorPositionChanged()), this, SLOT(handleCursorPositionChanged()));
    setFocusProxy(input_);
    logRosterSplitter_->setFocusProxy(input_);
    midBar_->setFocusProxy(input_);
    messageLog_->setFocusProxy(input_);
    connect(messageLog_, SIGNAL(gotFocus()), input_, SLOT(setFocus()));
    resize(400,300);
    connect(messageLog_, SIGNAL(fontResized(int)), this, SIGNAL(fontResized(int)));
    connect(messageLog_, SIGNAL(logCleared()), this, SLOT(handleLogCleared()));

    treeWidget_->onSomethingSelectedChanged.connect(boost::bind(&QtChatWindow::handleOccupantSelectionChanged, this, _1));
    treeWidget_->onOccupantActionSelected.connect(boost::bind(boost::ref(onOccupantActionSelected), _1, _2));

    settings_->onSettingChanged.connect(boost::bind(&QtChatWindow::handleSettingChanged, this, _1));
    messageLog_->showEmoticons(settings_->getSetting(QtUISettingConstants::SHOW_EMOTICONS));
    setMinimumSize(100, 100);
}

QtChatWindow::~QtChatWindow() {
    settings_->onSettingChanged.disconnect(boost::bind(&QtChatWindow::handleSettingChanged, this, _1));
    if (mucConfigurationWindow_) {
        delete mucConfigurationWindow_.data();
    }
}

void QtChatWindow::handleSettingChanged(const std::string& setting) {
    if (setting == QtUISettingConstants::SHOW_EMOTICONS.getKey()) {
        bool showEmoticons = settings_->getSetting(QtUISettingConstants::SHOW_EMOTICONS);
        messageLog_->showEmoticons(showEmoticons);
    }
}

void QtChatWindow::handleLogCleared() {
    onLogCleared();
}

void QtChatWindow::handleOccupantSelectionChanged(RosterItem* item) {
    onOccupantSelectionChanged(dynamic_cast<ContactRosterItem*>(item));
}

void QtChatWindow::handleFontResized(int fontSizeSteps) {
    messageLog_->resizeFont(fontSizeSteps);
}

void QtChatWindow::handleAlertButtonClicked() {
    const QObject* alertWidget = QObject::sender()->parent();
    std::map<AlertID, QWidget*>::const_iterator i = alertWidgets_.begin();
    for ( ; i != alertWidgets_.end(); ++i) {
        if (i->second == alertWidget) {
            removeAlert(i->first);
            break;
        }
    }
}

QtChatWindow::AlertID QtChatWindow::addAlert(const std::string& alertText) {
    QWidget* alertWidget = new QWidget(this);
    QHBoxLayout* alertLayout = new QHBoxLayout(alertWidget);
    alertLayout_->addWidget(alertWidget);
    QLabel* alertLabel = new QLabel(this);
    alertLabel->setText(alertText.c_str());
    alertLayout->addWidget(alertLabel);

    QToolButton* closeButton = new QToolButton(alertWidget);
    closeButton->setIcon(style()->standardIcon(QStyle::SP_TitleBarCloseButton));
    closeButton->setIconSize(QSize(16,16));
    closeButton->setCursor(Qt::ArrowCursor);
    closeButton->setStyleSheet("QToolButton { border: none; padding: 0px; }");
    connect (closeButton, SIGNAL(clicked()), this, SLOT(handleAlertButtonClicked()));

    alertLayout->addWidget(closeButton);
    QPalette palette = alertWidget->palette();
    palette.setColor(QPalette::Window, QColor(Qt::yellow));
    palette.setColor(QPalette::WindowText, QColor(Qt::black));
    alertWidget->setStyleSheet(alertStyleSheet_);
    alertLabel->setStyleSheet(alertStyleSheet_);

    AlertID id = nextAlertId_++;
    alertWidgets_[id] = alertWidget;
    return id;
}

void QtChatWindow::removeAlert(const AlertID id) {
    std::map<AlertID, QWidget*>::iterator i = alertWidgets_.find(id);
    if (i != alertWidgets_.end()) {
        alertLayout_->removeWidget(i->second);
        delete i->second;
        alertWidgets_.erase(i);
    }
}

void QtChatWindow::setTabComplete(TabComplete* completer) {
    completer_ = completer;
}

void QtChatWindow::handleKeyPressEvent(QKeyEvent* event) {
    event->ignore();
    if (event->isAccepted()) {
        return;
    }
    event->accept();

    int key = event->key();
    if (key == Qt::Key_Tab) {
        tabComplete();
    }
    else if ((key == Qt::Key_Up) && input_->toPlainText().isEmpty() && !(lastSentMessage_.isEmpty())) {
        beginCorrection();
    }
    else if (key == Qt::Key_Down && isCorrection_ && input_->textCursor().atBlockEnd()) {
        cancelCorrection();
    }
    else if (key == Qt::Key_Down || key == Qt::Key_Up) {
        event->ignore();
    }
    else {
        messageLog_->handleKeyPressEvent(event);
    }
}

void QtChatWindow::beginCorrection() {
    boost::optional<AlertID> newCorrectingAlert;
    if (correctionEnabled_ == Maybe) {
        newCorrectingAlert = addAlert(Q2PSTRING(tr("This chat may not support message correction. If you send a correction anyway, it may appear as a duplicate message")));
    }
    else if (correctionEnabled_ == No) {
        newCorrectingAlert = addAlert(Q2PSTRING(tr("This chat does not support message correction.  If you send a correction anyway, it will appear as a duplicate message")));
    }

    if (newCorrectingAlert) {
        if (correctingAlert_) {
            removeAlert(*correctingAlert_);
        }
        correctingAlert_ = newCorrectingAlert;
    }

    QTextCursor cursor = input_->textCursor();
    cursor.select(QTextCursor::Document);
    cursor.beginEditBlock();
    cursor.insertText(QString(lastSentMessage_));
    cursor.endEditBlock();
    isCorrection_ = true;
    correctingLabel_->show();
    input_->setCorrectionHighlight(true);
    labelsWidget_->setEnabled(false);
}

void QtChatWindow::cancelCorrection() {
    if (correctingAlert_) {
        removeAlert(*correctingAlert_);
        correctingAlert_.reset();
    }
    QTextCursor cursor = input_->textCursor();
    cursor.select(QTextCursor::Document);
    cursor.removeSelectedText();
    isCorrection_ = false;
    correctingLabel_->hide();
    input_->setCorrectionHighlight(false);
    labelsWidget_->setEnabled(true);
}

QByteArray QtChatWindow::getSplitterState() {
    return logRosterSplitter_->saveState();
}

void QtChatWindow::handleChangeSplitterState(QByteArray state) {
    logRosterSplitter_->restoreState(state);
}

void QtChatWindow::handleSplitterMoved(int, int) {
    emit splitterMoved();
}

void QtChatWindow::tabComplete() {
    if (!completer_) {
        return;
    }

    QTextCursor cursor;
    if (tabCompleteCursor_.hasSelection()) {
        cursor = tabCompleteCursor_;
    }
    else {
        cursor = input_->textCursor();
        while(cursor.movePosition(QTextCursor::Left, QTextCursor::KeepAnchor) && cursor.document()->characterAt(cursor.position() - 1) != ' ') { }
    }
    QString root = cursor.selectedText();
    if (root.isEmpty()) {
        return;
    }
    QString suggestion = P2QSTRING(completer_->completeWord(Q2PSTRING(root)));
    if (root == suggestion) {
        return;
    }
    tabCompletion_ = true;
    cursor.beginEditBlock();
    cursor.removeSelectedText();
    int oldPosition = cursor.position();

    cursor.insertText(suggestion);
    tabCompleteCursor_ = cursor;
    tabCompleteCursor_.setPosition(oldPosition, QTextCursor::KeepAnchor);

    cursor.endEditBlock();
    tabCompletion_ = false;
}

void QtChatWindow::setRosterModel(Roster* roster) {
    treeWidget_->setRosterModel(roster);
}

void QtChatWindow::setAvailableSecurityLabels(const std::vector<SecurityLabelsCatalog::Item>& labels) {
    delete labelModel_;
    labelModel_ = new LabelModel();
    labelModel_->availableLabels_ = labels;
    int i = 0;
    int defaultIndex = 0;
    labelsWidget_->setModel(labelModel_);
    for (const auto& label : labels) {
        if (label.getIsDefault()) {
            defaultIndex = i;
            break;
        }
        i++;
    }
    labelsWidget_->setCurrentIndex(defaultIndex);
}

void QtChatWindow::handleCurrentLabelChanged(int index) {
    if (static_cast<size_t>(index) >= labelModel_->availableLabels_.size()) {
        SWIFT_LOG(debug) << "User selected a label that doesn't exist";
        return;
    }
    const SecurityLabelsCatalog::Item& label = labelModel_->availableLabels_[index];
    if (label.getLabel()) {
        QPalette palette = labelsWidget_->palette();
        //palette.setColor(QPalette::Base, P2QSTRING(label.getLabel()->getBackgroundColor()));
        palette.setColor(labelsWidget_->backgroundRole(), P2QSTRING(label.getLabel()->getBackgroundColor()));
        palette.setColor(labelsWidget_->foregroundRole(), P2QSTRING(label.getLabel()->getForegroundColor()));
        labelsWidget_->setPalette(palette);
        midBar_->setPalette(palette);
        labelsWidget_->setAutoFillBackground(true);
    }
    else {
        labelsWidget_->setAutoFillBackground(false);
        labelsWidget_->setPalette(defaultLabelsPalette_);
        midBar_->setPalette(defaultLabelsPalette_);
    }
}

void QtChatWindow::setSecurityLabelsError() {
    labelsWidget_->setEnabled(false);
}

void QtChatWindow::setSecurityLabelsEnabled(bool enabled) {
    if (enabled) {
        labelsWidget_->setEnabled(true);
        labelsWidget_->show();
    }
    else {
        labelsWidget_->hide();
    }
}

void QtChatWindow::setCorrectionEnabled(Tristate enabled) {
    correctionEnabled_ = enabled;
}

void QtChatWindow::setFileTransferEnabled(Tristate enabled) {
    fileTransferEnabled_ = enabled;
}

SecurityLabelsCatalog::Item QtChatWindow::getSelectedSecurityLabel() {
    assert(labelsWidget_->isEnabled());
    assert(labelsWidget_->currentIndex() >= 0 && static_cast<size_t>(labelsWidget_->currentIndex()) < labelModel_->availableLabels_.size());
    return labelModel_->availableLabels_[labelsWidget_->currentIndex()];
}

void QtChatWindow::closeEvent(QCloseEvent* event) {
    event->accept();
    emit windowClosing();
    onClosed();
}

void QtChatWindow::convertToMUC(MUCType mucType) {
    impromptu_ = (mucType == ImpromptuMUC);
    treeWidget_->setMessageTarget(impromptu_ ? QtTreeWidget::MessageDisplayJID : QtTreeWidget::MessageDefaultJID);
    isMUC_ = true;
    treeWidget_->show();
    subject_->setVisible(!impromptu_);
}

void QtChatWindow::setOnline(bool online) {
    isOnline_ = online;
    if (!online) {
        if (mucConfigurationWindow_) {
            delete mucConfigurationWindow_.data();
        }
        if (affiliationEditor_) {
            delete affiliationEditor_.data();
        }
    }
}

void QtChatWindow::showEvent(QShowEvent* event) {
    emit windowOpening();
    QWidget::showEvent(event);
}

void QtChatWindow::setUnreadMessageCount(int count) {
    if (unreadCount_ != count) {
        unreadCount_ = count;
        updateTitleWithUnreadCount();
        emit countUpdated();
    }
}

void QtChatWindow::setContactChatState(ChatState::ChatStateType state) {
    contactIsTyping_ = (state == ChatState::Composing);
    emit titleUpdated();
}

QtTabbable::AlertType QtChatWindow::getWidgetAlertState() {
    if (contactIsTyping_) {
        return ImpendingActivity;
    }
    if (unreadCount_ > 0) {
        return WaitingActivity;
    }
    return NoActivity;
}

void QtChatWindow::setName(const std::string& name) {
    contact_ = P2QSTRING(name);
    updateTitleWithUnreadCount();
}

void QtChatWindow::updateTitleWithUnreadCount() {
    if (isWindow()) {
        setWindowTitle(unreadCount_ > 0 ? QString("(%1) %2").arg(unreadCount_).arg(contact_) : contact_);
    }
    else {
        setWindowTitle(contact_);
    }
    emit titleUpdated();
}

void QtChatWindow::flash() {
    emit requestFlash();
}

int QtChatWindow::getCount() {
    return unreadCount_;
}

void QtChatWindow::replaceSystemMessage(const ChatWindow::ChatMessage& message, const std::string& id, const ChatWindow::TimestampBehaviour timestampBehaviour) {
    messageLog_->replaceSystemMessage(message, id, timestampBehaviour);
}

void QtChatWindow::returnPressed() {
    if (!isOnline_ || (blockingState_ == IsBlocked)) {
        return;
    }
    messageLog_->scrollToBottom();
    lastSentMessage_ = QString(input_->toPlainText());
    onSendMessageRequest(Q2PSTRING(input_->toPlainText()), isCorrection_);
    inputClearing_ = true;
    input_->clear();
    cancelCorrection();
    inputClearing_ = false;
}

void QtChatWindow::handleInputChanged() {
    if (inputClearing_) {
        return;
    }
    if (input_->toPlainText().isEmpty()) {
        onUserCancelsTyping();
    }
    else {
        onUserTyping();
    }
}

void QtChatWindow::handleCursorPositionChanged() {
    if (tabCompletion_) {
        return;
    }
    tabCompleteCursor_.clearSelection();
}

void QtChatWindow::show() {
    if (parentWidget() == nullptr) {
        QWidget::show();
    }
    emit windowOpening();
}

bool QtChatWindow::isVisible() const {
    return QWidget::isVisible();
}

void QtChatWindow::activate() {
    if (isWindow()) {
        QWidget::show();
    }
    emit wantsToActivate();
    input_->setFocus();
}

void QtChatWindow::resizeEvent(QResizeEvent*) {
    emit geometryChanged();
}

void QtChatWindow::moveEvent(QMoveEvent*) {
    emit geometryChanged();
}

void QtChatWindow::dragEnterEvent(QDragEnterEvent *event) {
    if (isOnline_ && (blockingState_ != IsBlocked)) {
        if (event->mimeData()->hasUrls() && event->mimeData()->urls().size() == 1) {
            if (!isMUC_ && fileTransferEnabled_ == Yes) {
                event->acceptProposedAction();
            }
        }
        else if (event->mimeData()->hasFormat("application/vnd.swift.contact-jid-list")) {
            if (isMUC_ || supportsImpromptuChat_) {
                // Prevent invitations or impromptu initializations for contacts that you are already chatting to.
                std::vector<JID> droppedJIDs =jidListFromQByteArray(event->mimeData()->data("application/vnd.swift.contact-jid-list"));
                std::set<JID> conversationJIDs;
                if (isMUC_) {
                    conversationJIDs = treeWidget_->getRoster()->getJIDs();
                }

                for (std::vector<JID>::iterator i = droppedJIDs.begin(); i != droppedJIDs.end(); ) {
                    const JID& droppedJID = *i;
                    if (conversationJIDs.find(droppedJID) != conversationJIDs.end()) {
                        i = droppedJIDs.erase(i);
                    }
                    else {
                        ++i;
                    }
                }

                if (droppedJIDs.empty()) {
                    event->ignore();
                }
                else {
                    event->acceptProposedAction();
                }
            }
        }
    }
}

void QtChatWindow::dropEvent(QDropEvent *event) {
    if (fileTransferEnabled_ == Yes && event->mimeData()->hasUrls()) {
        if (event->mimeData()->urls().size() == 1) {
            onSendFileRequest(Q2PSTRING(event->mimeData()->urls().at(0).toLocalFile()));
        }
        else {
            std::string messageText(Q2PSTRING(tr("Sending of multiple files at once isn't supported at this time.")));
            ChatMessage message;
            message.append(std::make_shared<ChatTextMessagePart>(messageText));
            addSystemMessage(message, DefaultDirection);
        }
    }
    else if (event->mimeData()->hasFormat("application/vnd.swift.contact-jid-list")) {
        std::vector<JID> invites = jidListFromQByteArray(event->mimeData()->data("application/vnd.swift.contact-jid-list"));
        onInviteToChat(invites);
    }
}

std::vector<JID> QtChatWindow::jidListFromQByteArray(const QByteArray& dataBytes) {
    QDataStream dataStream(dataBytes);
    std::vector<JID> invites;
    while (!dataStream.atEnd()) {
        QString jidString;
        dataStream >> jidString;
        invites.push_back(Q2PSTRING(jidString));
    }
    return invites;
}

void QtChatWindow::setAvailableOccupantActions(const std::vector<OccupantAction>& actions) {
    treeWidget_->setAvailableOccupantActions(actions);
}

void QtChatWindow::setSubject(const std::string& subject) {
    //subject_->setVisible(!subject.empty());
    subject_->setText(P2QSTRING(subject));
    subject_->setToolTip(P2QSTRING(subject));
    subject_->setCursorPosition(0);
}

void QtChatWindow::handleEmojisButtonClicked() {
    // Create QtEmojisSelector and QMenu
    emojisGrid_ = new QtEmojisSelector(qtOnlySettings_->getQSettings(), emoticonsMap_);
    auto emojisLayout = new QVBoxLayout();
    emojisLayout->setContentsMargins(style()->pixelMetric(QStyle::PM_MenuHMargin),style()->pixelMetric(QStyle::PM_MenuVMargin),
                                     style()->pixelMetric(QStyle::PM_MenuHMargin),style()->pixelMetric(QStyle::PM_MenuVMargin));
    emojisLayout->addWidget(emojisGrid_);
    emojisMenu_ = std::unique_ptr<QMenu>(new QMenu());
    emojisMenu_->setLayout(emojisLayout);
    emojisMenu_->adjustSize();

    connect(emojisGrid_, SIGNAL(emojiClicked(QString)), this, SLOT(handleEmojiClicked(QString)));

    QSize menuSize = emojisMenu_->size();
    emojisMenu_->exec(QPoint(QCursor::pos().x() - menuSize.width(), QCursor::pos().y() - menuSize.height()));
}

void QtChatWindow::handleEmojiClicked(QString emoji) {
    if (isVisible()) {
        input_->textCursor().insertText(emoji);
        input_->setFocus();
        // The next line also deletes the emojisGrid_, as it was added to the
        // layout of the emojisMenu_.
        emojisMenu_.reset();
    }
}

void QtChatWindow::handleTextInputReceivedFocus() {
    lastLineTracker_.setHasFocus(true);
    input_->setFocus();
    onAllMessagesRead();
}

void QtChatWindow::handleTextInputLostFocus() {
    lastLineTracker_.setHasFocus(false);
}

void QtChatWindow::handleActionButtonClicked() {
    QMenu contextMenu;
    QAction* changeSubject = nullptr;
    QAction* configure = nullptr;
    QAction* affiliations = nullptr;
    QAction* destroy = nullptr;
    QAction* invite = nullptr;

    QAction* block = nullptr;
    QAction* unblock = nullptr;

    if (availableRoomActions_.empty()) {
        if (blockingState_ == IsBlocked) {
            unblock = contextMenu.addAction(tr("Unblock"));
            unblock->setEnabled(isOnline_);
        }
        else if (!isMUC_ && blockingState_ == IsUnblocked) {
            block = contextMenu.addAction(tr("Block"));
            block->setEnabled(isOnline_);
        }

        if (supportsImpromptuChat_) {
            invite = contextMenu.addAction(tr("Invite person to this chat…"));
            invite->setEnabled(isOnline_ && (blockingState_ != IsBlocked));
        }

    }
    else {
        for (auto&& availableAction : availableRoomActions_) {
            if (impromptu_) {
                // hide options we don't need in impromptu chats
                if (availableAction == ChatWindow::ChangeSubject ||
                    availableAction == ChatWindow::Configure ||
                    availableAction == ChatWindow::Affiliations ||
                    availableAction == ChatWindow::Destroy) {
                    continue;
                }
            }
            switch(availableAction)
            {
                case ChatWindow::ChangeSubject:
                    changeSubject = contextMenu.addAction(tr("Change subject…"));
                    changeSubject->setEnabled(isOnline_);
                    break;
                case ChatWindow::Configure:
                    configure = contextMenu.addAction(tr("Configure room…"));
                    configure->setEnabled(isOnline_);
                    break;
                case ChatWindow::Affiliations:
                    affiliations = contextMenu.addAction(tr("Edit affiliations…"));
                    affiliations->setEnabled(isOnline_);
                    break;
                case ChatWindow::Destroy:
                    destroy = contextMenu.addAction(tr("Destroy room"));
                    destroy->setEnabled(isOnline_);
                    break;
                case ChatWindow::Invite:
                    invite = contextMenu.addAction(tr("Invite person to this room…"));
                    invite->setEnabled(isOnline_);
                    break;
            }
        }
    }

    QAction* bookmark = nullptr;
    if (isMUC_) {
        if (roomBookmarkState_ == RoomNotBookmarked) {
            bookmark = contextMenu.addAction(tr("Bookmark this room..."));
        }
        else {
            bookmark = contextMenu.addAction(tr("Edit bookmark..."));
        }
        bookmark->setEnabled(isOnline_);
    }

    QAction* result = contextMenu.exec(QCursor::pos());
    if (result == nullptr) {
        /* Skip processing. Note that otherwise, because the actions could be null they could match */
    }
    else if (result == changeSubject) {
        bool ok;
        QString subject = QInputDialog::getText(this, tr("Change room subject"), tr("New subject:"), QLineEdit::Normal, subject_->text(), &ok);
        if (ok) {
            onChangeSubjectRequest(Q2PSTRING(subject));
        }
    }
    else if (result == configure) {
        onConfigureRequest(Form::ref());
    }
    else if (result == affiliations) {
        if (!affiliationEditor_) {
            onGetAffiliationsRequest();
            affiliationEditor_ = new QtAffiliationEditor(this);
            connect(affiliationEditor_, SIGNAL(accepted()), this, SLOT(handleAffiliationEditorAccepted()));
        }
        affiliationEditor_->show();
    }
    else if (result == destroy) {
        QMessageBox msgBox;
        msgBox.setWindowTitle(tr("Confirm room destruction"));
        msgBox.setText(tr("Are you sure you want to destroy the room?"));
        msgBox.setInformativeText(tr("This will destroy the room."));
        msgBox.setStandardButtons(QMessageBox::Yes | QMessageBox::No);
        msgBox.setDefaultButton(QMessageBox::No);
        if (msgBox.exec() == QMessageBox::Yes) {
            onDestroyRequest();
        }
    }
    else if (result == invite) {
        onInviteToChat(std::vector<JID>());
    }
    else if (result == block) {
        onBlockUserRequest();
    }
    else if (result == unblock) {
        onUnblockUserRequest();
    }
    else if (result == bookmark) {
        onBookmarkRequest();
    }
}

void QtChatWindow::handleAffiliationEditorAccepted() {
    onChangeAffiliationsRequest(affiliationEditor_->getChanges());
}

void QtChatWindow::setAffiliations(MUCOccupant::Affiliation affiliation, const std::vector<JID>& jids) {
    if (!affiliationEditor_) return;
    affiliationEditor_->setAffiliations(affiliation, jids);
}

void QtChatWindow::setAvailableRoomActions(const std::vector<RoomAction>& actions) {
    availableRoomActions_ = actions;
}

void QtChatWindow::setBlockingState(BlockingState state) {
    blockingState_ = state;
}

void QtChatWindow::setCanInitiateImpromptuChats(bool supportsImpromptu) {
    supportsImpromptuChat_ = supportsImpromptu;
}

void QtChatWindow::showBookmarkWindow(const MUCBookmark& bookmark) {
    if (roomBookmarkState_ == RoomNotBookmarked) {
        QtAddBookmarkWindow* window = new QtAddBookmarkWindow(eventStream_, bookmark);
        window->show();
    }
    else {
        QtEditBookmarkWindow* window = new QtEditBookmarkWindow(eventStream_, bookmark);
        window->show();
    }
}

std::string QtChatWindow::getID() const {
    return id_;
}

void QtChatWindow::setEmphasiseFocus(bool emphasise) {
    input_->setEmphasiseFocus(emphasise);
}

void QtChatWindow::showRoomConfigurationForm(Form::ref form) {
    if (mucConfigurationWindow_) {
        delete mucConfigurationWindow_.data();
    }
    mucConfigurationWindow_ = new QtMUCConfigurationWindow(form);
    mucConfigurationWindow_->onFormComplete.connect(boost::bind(boost::ref(onConfigureRequest), _1));
    mucConfigurationWindow_->onFormCancelled.connect(boost::bind(boost::ref(onConfigurationFormCancelled)));
}

void QtChatWindow::handleAppendedToLog() {
    if (lastLineTracker_.getShouldMoveLastLine()) {
        /* should this be queued? */
        messageLog_->addLastSeenLine();
    }
    if (isWidgetSelected()) {
        onAllMessagesRead();
    }
}

void QtChatWindow::addMUCInvitation(const std::string& senderName, const JID& jid, const std::string& reason, const std::string& password, bool direct, bool isImpromptu, bool isContinuation) {
    handleAppendedToLog();
    messageLog_->addMUCInvitation(senderName, jid, reason, password, direct, isImpromptu, isContinuation);
}

std::string QtChatWindow::addMessage(const ChatMessage& message, const std::string& senderName, bool senderIsSelf, std::shared_ptr<SecurityLabel> label, const std::string& avatarPath, const boost::posix_time::ptime& time) {
    handleAppendedToLog();
    return messageLog_->addMessage(message, senderName, senderIsSelf, label, avatarPath, time);
}

std::string QtChatWindow::addAction(const ChatMessage& message, const std::string& senderName, bool senderIsSelf, std::shared_ptr<SecurityLabel> label, const std::string& avatarPath, const boost::posix_time::ptime& time) {
    handleAppendedToLog();
    return messageLog_->addAction(message, senderName, senderIsSelf, label, avatarPath, time);
}


std::string QtChatWindow::addSystemMessage(const ChatMessage& message, Direction direction) {
    handleAppendedToLog();
    return messageLog_->addSystemMessage(message, direction);
}

void QtChatWindow::addPresenceMessage(const ChatMessage& message, Direction direction) {
    handleAppendedToLog();
    messageLog_->addPresenceMessage(message, direction);
}

void QtChatWindow::addErrorMessage(const ChatMessage& message) {
    handleAppendedToLog();
    messageLog_->addErrorMessage(message);
}


void QtChatWindow::replaceMessage(const ChatMessage& message, const std::string& id, const boost::posix_time::ptime& time) {
    handleAppendedToLog();
    messageLog_->replaceMessage(message, id, time);
}

void QtChatWindow::replaceWithAction(const ChatMessage& message, const std::string& id, const boost::posix_time::ptime& time) {
    handleAppendedToLog();
    messageLog_->replaceWithAction(message, id, time);
}

std::string QtChatWindow::addFileTransfer(const std::string& senderName, const std::string& avatarPath, bool senderIsSelf, const std::string& filename, const boost::uintmax_t sizeInBytes, const std::string& description) {
    handleAppendedToLog();
    return messageLog_->addFileTransfer(senderName, avatarPath, senderIsSelf, filename, sizeInBytes, description);
}

void QtChatWindow::setFileTransferProgress(std::string id, const int percentageDone) {
    messageLog_->setFileTransferProgress(id, percentageDone);
}

void QtChatWindow::setFileTransferStatus(std::string id, const FileTransferState state, const std::string& msg) {
    messageLog_->setFileTransferStatus(id, state, msg);
}

std::string QtChatWindow::addWhiteboardRequest(bool senderIsSelf) {
    handleAppendedToLog();
    return messageLog_->addWhiteboardRequest(contact_, senderIsSelf);
}

void QtChatWindow::setWhiteboardSessionStatus(std::string id, const ChatWindow::WhiteboardSessionState state) {
    messageLog_->setWhiteboardSessionStatus(id, state);
}

void QtChatWindow::replaceLastMessage(const ChatMessage& message, const TimestampBehaviour timestampBehaviour) {
    messageLog_->replaceLastMessage(message, timestampBehaviour);
}

void QtChatWindow::setAckState(const std::string& id, AckState state) {
    messageLog_->setAckState(id, state);
}

void QtChatWindow::setMessageReceiptState(const std::string& id, ChatWindow::ReceiptState state) {
    messageLog_->setMessageReceiptState(id, state);
}

void QtChatWindow::setBookmarkState(RoomBookmarkState bookmarkState) {
    roomBookmarkState_ = bookmarkState;
}

}