harbour-fernschreiber/qml/pages/ChatPage.qml

/*
    Copyright (C) 2020 Sebastian J. Wolf and other contributors

    This file is part of Fernschreiber.

    Fernschreiber 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.

    Fernschreiber 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.

    You should have received a copy of the GNU General Public License
    along with Fernschreiber. If not, see <http://www.gnu.org/licenses/>.
*/
import QtQuick 2.6
import QtGraphicalEffects 1.0
import Sailfish.Silica 1.0
import Sailfish.Pickers 1.0
import Nemo.Thumbnailer 1.0
import WerkWolf.Fernschreiber 1.0
import "../components"
import "../js/debug.js" as Debug
import "../js/twemoji.js" as Emoji
import "../js/functions.js" as Functions

Page {
    id: chatPage
    allowedOrientations: Orientation.All
    backNavigation: !stickerPickerLoader.active

    property bool loading: true;
    property bool isInitialized: false;
    readonly property int myUserId: tdLibWrapper.getUserInformation().id;
    property var chatInformation;
    property var secretChatDetails;
    property alias chatPicture: chatPictureThumbnail.photoData
    property bool isPrivateChat: false;
    property bool isSecretChat: false;
    property bool isSecretChatReady: false;
    property bool isBasicGroup: false;
    property bool isSuperGroup: false;
    property bool isChannel: false;
    property bool isDeletedUser: false;
    property bool containsSponsoredMessages: false;
    property var chatPartnerInformation;
    property var botInformation;
    property var chatGroupInformation;
    property int chatOnlineMemberCount: 0;
    property var emojiProposals;
    property bool iterativeInitialization: false;
    property var messageToShow;
    property string messageIdToShow;
    property string messageIdToScrollTo;
    readonly property bool userIsMember: ((isPrivateChat || isSecretChat) && chatInformation["@type"]) || // should be optimized
                                (isBasicGroup || isSuperGroup) && (
                                    (chatGroupInformation.status["@type"] === "chatMemberStatusMember")
                                    || (chatGroupInformation.status["@type"] === "chatMemberStatusAdministrator")
                                    || (chatGroupInformation.status["@type"] === "chatMemberStatusRestricted" && chatGroupInformation.status.is_member)
                                    || (chatGroupInformation.status["@type"] === "chatMemberStatusCreator" && chatGroupInformation.status.is_member)
                                    )
    property var selectedMessages: []
    readonly property bool isSelecting: selectedMessages.length > 0
    readonly property bool canSendMessages: hasSendPrivilege("can_send_basic_messages")
    property bool doSendBotStartMessage
    property string sendBotStartMessageParameter
    property var availableReactions
    signal resetElements()
    signal elementSelected(int elementIndex)
    signal navigatedTo(int targetIndex)

    states: [
        State {
            name: "selectMessages"
            when: isSelecting
            PropertyChanges {
                target: chatNameText
                text: qsTr("Select Messages")
            }
            PropertyChanges {
                target: chatStatusText
                text: qsTr("%Ln messages selected", "number of messages selected", chatPage.selectedMessages.length)
            }
            PropertyChanges {
                target: newMessageTextField
                focus: false
            }
        }

    ]

    function toggleMessageSelection(message) {
        var selectionArray = selectedMessages;
        var foundIndex = -1
        if(selectionArray.length > 0) {
            for(var i = 0; i < selectionArray.length; i += 1) {
                if(selectionArray[i].id === message.id) {
                    foundIndex = i;
                    continue;
                }
            }
        }
        if(foundIndex > -1) {
            selectionArray.splice(foundIndex, 1);
        } else {
            selectionArray.push(message);
        }
        selectedMessages = selectionArray;
    }

    function updateChatPartnerStatusText() {
        if (chatPage.isSelecting) {
            return
        }
        var statusText = Functions.getChatPartnerStatusText(chatPartnerInformation.status['@type'], chatPartnerInformation.status.was_online);
        if (chatPage.secretChatDetails) {
            var secretChatStatus = Functions.getSecretChatStatus(chatPage.secretChatDetails);
            if (statusText && secretChatStatus) {
                statusText += " - ";
            }
            if (secretChatStatus) {
                statusText += secretChatStatus;
            }
        }
        if (statusText) {
            chatStatusText.text = statusText;
        }
        if (chatPartnerInformation.type['@type'] === "userTypeDeleted") {
            chatNameText.text = qsTr("Deleted User");
            chatPage.isDeletedUser = true;
        }
    }

    function updateGroupStatusText() {
        if (chatPage.isSelecting) {
            return
        }
        if (chatOnlineMemberCount > 0) {
            chatStatusText.text = qsTr("%1, %2", "combination of '[x members], [y online]', which are separate translations")
                .arg(qsTr("%1 members", "", chatGroupInformation.member_count)
                    .arg(Functions.getShortenedCount(chatGroupInformation.member_count)))
                .arg(qsTr("%1 online", "", chatOnlineMemberCount)
                    .arg(Functions.getShortenedCount(chatOnlineMemberCount)));
        } else {
            if (isChannel) {
                chatStatusText.text = qsTr("%1 subscribers", "", chatGroupInformation.member_count).arg(Functions.getShortenedCount(chatGroupInformation.member_count));
            } else {
                chatStatusText.text = qsTr("%1 members", "", chatGroupInformation.member_count).arg(Functions.getShortenedCount(chatGroupInformation.member_count));
            }
        }
        joinLeaveChatMenuItem.text = chatPage.userIsMember ? qsTr("Leave Chat") : qsTr("Join Chat");
    }

    function initializePage() {
        Debug.log("[ChatPage] Initializing chat page...");
        chatView.currentIndex = -1;
        chatView.lastReadSentIndex = -1;
        var chatType = chatInformation.type['@type'];
        isPrivateChat = chatType === "chatTypePrivate";
        isSecretChat = chatType === "chatTypeSecret";
        isBasicGroup = ( chatType === "chatTypeBasicGroup" );
        isSuperGroup = ( chatType === "chatTypeSupergroup" );
        if (isPrivateChat || isSecretChat) {
            chatPartnerInformation = tdLibWrapper.getUserInformation(chatInformation.type.user_id);
            updateChatPartnerStatusText();
            if (isSecretChat) {
                tdLibWrapper.getSecretChat(chatInformation.type.secret_chat_id);
            }
            if(chatPartnerInformation.type["@type"] === "userTypeBot") {
                tdLibWrapper.getUserFullInfo(chatPartnerInformation.id)
            }
        }
        else if (isBasicGroup) {
            chatGroupInformation = tdLibWrapper.getBasicGroup(chatInformation.type.basic_group_id);
            updateGroupStatusText();
        }
        else if (isSuperGroup) {
            chatGroupInformation = tdLibWrapper.getSuperGroup(chatInformation.type.supergroup_id);
            isChannel = chatGroupInformation.is_channel;
            updateGroupStatusText();
        }
        if (stickerManager.needsReload()) {
            Debug.log("[ChatPage] Recent stickers will be reloaded!");
            tdLibWrapper.getRecentStickers();
            stickerManager.setNeedsReload(false);
        }
        tdLibWrapper.getChatPinnedMessage(chatInformation.id);
        tdLibWrapper.toggleChatIsMarkedAsUnread(chatInformation.id, false);
        availableReactions = tdLibWrapper.getChatReactions(chatInformation.id);
    }

    function getMessageStatusText(message, listItemIndex, lastReadSentIndex, useElapsed) {
        Debug.log("Last read sent index: " + lastReadSentIndex);
        var messageStatusSuffix = "";
        if(!message) {
            return "";
        }

        if (message['@type'] === "sponsoredMessage") {
            return qsTr("Sponsored Message");
        }

        if (message.edit_date > 0) {
            messageStatusSuffix += " - " + qsTr("edited");
        }

        if (chatPage.myUserId === message.sender_id.user_id) {
            messageStatusSuffix += "&nbsp;&nbsp;"
            if (listItemIndex <= lastReadSentIndex) {
                // Read by other party
                messageStatusSuffix += Emoji.emojify("✅", Theme.fontSizeTiny);
            } else {
                // Not yet read by other party
                if (message.sending_state) {
                    if (message.sending_state['@type'] === "messageSendingStatePending") {
                        messageStatusSuffix += Emoji.emojify("🕙", Theme.fontSizeTiny);
                    } else {
                        // Sending failed...
                        messageStatusSuffix += Emoji.emojify("❌", Theme.fontSizeTiny);
                    }
                } else {
                    messageStatusSuffix += Emoji.emojify("☑️", Theme.fontSizeTiny);
                }
            }
        }
        return ( useElapsed ? Functions.getDateTimeElapsed(message.date) : Functions.getDateTimeTranslated(message.date) ) + messageStatusSuffix;
    }

    function clearAttachmentPreviewRow() {
        attachmentPreviewRow.isPicture = false;
        attachmentPreviewRow.isVideo = false;
        attachmentPreviewRow.isDocument = false;
        attachmentPreviewRow.isVoiceNote = false;
        attachmentPreviewRow.isLocation = false;
        attachmentPreviewRow.fileProperties = null;
        attachmentPreviewRow.locationData = null;
        attachmentPreviewRow.attachmentDescription = "";
        fernschreiberUtils.stopGeoLocationUpdates();
    }

    function controlSendButton() {
        if (newMessageTextField.text.length !== 0
                || attachmentPreviewRow.isPicture
                || attachmentPreviewRow.isDocument
                || attachmentPreviewRow.isVideo
                || attachmentPreviewRow.isVoiceNote
                || attachmentPreviewRow.isLocation) {
            newMessageSendButton.enabled = true;
        } else {
            newMessageSendButton.enabled = false;
        }
    }

    function sendMessage() {
        if (newMessageColumn.editMessageId !== "0") {
            tdLibWrapper.editMessageText(chatInformation.id, newMessageColumn.editMessageId, newMessageTextField.text);
        } else {
            if (attachmentPreviewRow.visible) {
                if (attachmentPreviewRow.isPicture) {
                    tdLibWrapper.sendPhotoMessage(chatInformation.id, attachmentPreviewRow.fileProperties.filePath, newMessageTextField.text, newMessageColumn.replyToMessageId);
                }
                if (attachmentPreviewRow.isVideo) {
                    tdLibWrapper.sendVideoMessage(chatInformation.id, attachmentPreviewRow.fileProperties.filePath, newMessageTextField.text, newMessageColumn.replyToMessageId);
                }
                if (attachmentPreviewRow.isDocument) {
                    tdLibWrapper.sendDocumentMessage(chatInformation.id, attachmentPreviewRow.fileProperties.filePath, newMessageTextField.text, newMessageColumn.replyToMessageId);
                }
                if (attachmentPreviewRow.isVoiceNote) {
                    tdLibWrapper.sendVoiceNoteMessage(chatInformation.id, fernschreiberUtils.voiceNotePath(), newMessageTextField.text, newMessageColumn.replyToMessageId);
                }
                if (attachmentPreviewRow.isLocation) {
                    tdLibWrapper.sendLocationMessage(chatInformation.id, attachmentPreviewRow.locationData.latitude, attachmentPreviewRow.locationData.longitude, attachmentPreviewRow.locationData.horizontalAccuracy, newMessageColumn.replyToMessageId);
                }
                clearAttachmentPreviewRow();
            } else {
                tdLibWrapper.sendTextMessage(chatInformation.id, newMessageTextField.text, newMessageColumn.replyToMessageId);
            }

            if(appSettings.focusTextAreaAfterSend) {
                lostFocusTimer.start();
            }
        }
        controlSendButton();
        newMessageInReplyToRow.inReplyToMessage = null;
        newMessageColumn.editMessageId = "0";
        fernschreiberUtils.stopGeoLocationUpdates();
    }

    function getWordBoundaries(text, cursorPosition) {
        var wordBoundaries = { beginIndex : 0, endIndex : text.length};
        var currentIndex = 0;
        for (currentIndex = (cursorPosition - 1); currentIndex > 0; currentIndex--) {
            if (text.charAt(currentIndex) === ' ') {
                wordBoundaries.beginIndex = currentIndex + 1;
                break;
            }
        }
        for (currentIndex = cursorPosition; currentIndex < text.length; currentIndex++) {
            if (text.charAt(currentIndex) === ' ') {
                wordBoundaries.endIndex = currentIndex;
                break;
            }
        }
        return wordBoundaries;
    }

    function handleMessageTextReplacement(text, cursorPosition) {
        if(!newMessageTextField.focus) {
            return;
        }

        var wordBoundaries = getWordBoundaries(text, cursorPosition);

        var currentWord = text.substring(wordBoundaries.beginIndex, wordBoundaries.endIndex);
        if (currentWord.length > 1 && currentWord.charAt(0) === ':') {
            tdLibWrapper.searchEmoji(currentWord.substring(1));
        } else {
            chatPage.emojiProposals = null;
        }
        if (currentWord.length > 1 && currentWord.charAt(0) === '@') {
            knownUsersRepeater.model = knownUsersProxyModel;
            knownUsersProxyModel.setFilterWildcard("*" + currentWord.substring(1) + "*");
        } else {
            knownUsersRepeater.model = undefined;
        }

    }

    function replaceMessageText(text, cursorPosition, newText) {
        var wordBoundaries = getWordBoundaries(text, cursorPosition);
        var newCompleteText = text.substring(0, wordBoundaries.beginIndex) + newText + " " + text.substring(wordBoundaries.endIndex);
        var newIndex = wordBoundaries.beginIndex + newText.length + 1;
        newMessageTextField.text = newCompleteText;
        newMessageTextField.cursorPosition = newIndex;
        lostFocusTimer.start();
    }

    function setMessageText(text, doSend) {
        if(doSend) {
            tdLibWrapper.sendTextMessage(chatInformation.id, text, "0");
        }
        else {
            newMessageTextField.text = text
            newMessageTextField.cursorPosition = text.length
            lostFocusTimer.start();
        }

    }

    function startForwardingMessages(messages) {
        var ids = Functions.getMessagesArrayIds(messages);
        var neededPermissions = Functions.getMessagesNeededForwardPermissions(messages);
        var chatId = chatInformation.id;
        pageStack.push(Qt.resolvedUrl("../pages/ChatSelectionPage.qml"), {
            myUserId: chatPage.myUserId,
            headerDescription: qsTr("Forward %Ln messages", "dialog header", ids.length),
            payload: {fromChatId: chatId, messageIds:ids, neededPermissions: neededPermissions},
            state: "forwardMessages"
        });
    }

    function forwardMessages(fromChatId, messageIds) {
        forwardMessagesTimer.fromChatId = fromChatId;
        forwardMessagesTimer.messageIds = messageIds;
        forwardMessagesTimer.start();
    }
    function hasSendPrivilege(privilege) {
        var groupStatus = chatGroupInformation ? chatGroupInformation.status : null
        var groupStatusType = groupStatus ? groupStatus["@type"] : null
        return chatPage.isPrivateChat
                    || (groupStatusType === "chatMemberStatusMember" && chatInformation.permissions[privilege])
                    || groupStatusType === "chatMemberStatusAdministrator"
                    || groupStatusType === "chatMemberStatusCreator"
                    || (groupStatusType === "chatMemberStatusRestricted" && groupStatus.permissions[privilege])
                    || (chatPage.isSecretChat && chatPage.isSecretChatReady)
    }
    function canPinMessages() {
        Debug.log("Can we pin messages?");
        if (chatPage.isPrivateChat || chatPage.isSecretChat) {
            Debug.log("Private/Secret Chat: No!");
            return false;
        }
        if (chatPage.chatGroupInformation.status["@type"] === "chatMemberStatusCreator") {
            Debug.log("Creator of this chat: Yes!");
            return true;
        }
        if (chatPage.chatInformation.permissions.can_pin_messages) {
            Debug.log("All people can pin: Yes!");
            return true;
        }
        if (chatPage.chatGroupInformation.status["@type"] === "chatMemberStatusAdministrator") {
            Debug.log("Admin with privileges? ", chatPage.chatGroupInformation.status.can_pin_messages);
            return chatPage.chatGroupInformation.status.can_pin_messages;
        }
        if (chatPage.chatGroupInformation.status["@type"] === "chatMemberStatusRestricted") {
            Debug.log("Restricted, but can pin messages? ", chatPage.chatGroupInformation.status.permissions.can_pin_messages);
            return chatPage.chatGroupInformation.status.permissions.can_pin_messages;
        }
        Debug.log("Something else: No!");
        return false;
    }

    function resetFocus() {
        if (searchInChatField.text === "") {
            chatOverviewItem.visible = true;
        }
        searchInChatField.focus = false;
        chatPage.focus = true;
    }

    function showMessage(messageId, initialRun) {
        // Means we tapped a quoted message and had to load it.
        if(initialRun) {
            chatPage.messageIdToScrollTo = messageId
        }
        if (chatPage.messageIdToScrollTo && chatPage.messageIdToScrollTo != "") {
            var index = chatModel.getDisplayedMessageIndex(chatPage.messageIdToScrollTo);
            if(index !== -1) {
                chatPage.messageIdToScrollTo = "";
                chatView.scrollToIndex(index);
                navigatedTo(index);
            } else if(initialRun) {
                // we only want to do this once.
                chatModel.triggerLoadHistoryForMessage(chatPage.messageIdToScrollTo)
            }
        }
    }

    Timer {
        id: forwardMessagesTimer
        interval: 200

        property string fromChatId
        property var messageIds
        onTriggered: {
            if(chatPage.loading) {
                forwardMessagesTimer.start()
            } else {
                var forwardedToSecretChat = chatInformation.type["@type"] === "chatTypeSecret";
                tdLibWrapper.forwardMessages(chatInformation.id, fromChatId, messageIds, forwardedToSecretChat, false);
            }
        }
    }

    Timer {
        id: searchInChatTimer
        interval: 300
        running: false
        repeat: false
        onTriggered: {
            Debug.log("Searching for '" + searchInChatField.text + "'");
            chatModel.setSearchQuery(searchInChatField.text);
        }
    }

    Component.onCompleted: {
        initializePage();
    }

    Component.onDestruction: {
        if (chatPage.canSendMessages && !chatPage.isDeletedUser) {
            tdLibWrapper.setChatDraftMessage(chatInformation.id, 0, newMessageColumn.replyToMessageId, newMessageTextField.text,
                newMessageInReplyToRow.inReplyToMessage ? newMessageInReplyToRow.inReplyToMessage.id : 0);
        }
        fernschreiberUtils.stopGeoLocationUpdates();
        tdLibWrapper.closeChat(chatInformation.id);
    }

    onStatusChanged: {
        switch(status) {
        case PageStatus.Activating:
            tdLibWrapper.openChat(chatInformation.id);
            if(!chatPage.isInitialized) {
                if(chatInformation.draft_message) {
                    if(chatInformation.draft_message && chatInformation.draft_message.input_message_text) {
                        newMessageTextField.text = chatInformation.draft_message.input_message_text.text.text;
                        if(chatInformation.draft_message.reply_to_message_id) {
                            tdLibWrapper.getMessage(chatInformation.id, chatInformation.draft_message.reply_to_message_id);
                        }
                    }
                }
            }
            break;
        case PageStatus.Deactivating:
            messageOptionsDrawer.open = false
            break;
        case PageStatus.Active:
            if (!chatPage.isInitialized) {
                chatModel.initialize(chatInformation);

                pageStack.pushAttached(Qt.resolvedUrl("ChatInformationPage.qml"), { "chatInformation" : chatInformation, "privateChatUserInformation": chatPartnerInformation, "groupInformation": chatGroupInformation, "chatOnlineMemberCount": chatOnlineMemberCount});

                if(doSendBotStartMessage) {
                    tdLibWrapper.sendBotStartMessage(chatInformation.id, chatInformation.id, sendBotStartMessageParameter, "")
                }
            }
            break;
        case PageStatus.Inactive:
            if (pageStack.depth === 1) {
                // Only clear chat model if navigated back to overview page. In other cases we keep the information...
                chatModel.clear();
            } else {
                resetElements();
            }

            break;
        }
    }

    Connections {
        target: tdLibWrapper
        onUserUpdated: {
            if ((isPrivateChat || isSecretChat) && chatPartnerInformation.id.toString() === userId ) {
                chatPartnerInformation = userInformation;
                updateChatPartnerStatusText();
            }
        }
        onBasicGroupUpdated: {
            if (isBasicGroup && chatGroupInformation.id.toString() === groupId ) {
                chatGroupInformation = groupInformation;
                updateGroupStatusText();
            }
        }
        onSuperGroupUpdated: {
            if (isSuperGroup && chatGroupInformation.id.toString() === groupId ) {
                chatGroupInformation = groupInformation;
                updateGroupStatusText();
            }
        }
        onChatOnlineMemberCountUpdated: {
            Debug.log(isSuperGroup, "/", isBasicGroup, "/", chatInformation.id.toString(), "/", chatId);
            if ((isSuperGroup || isBasicGroup) && chatInformation.id.toString() === chatId) {
                chatOnlineMemberCount = onlineMemberCount;
                updateGroupStatusText();
            }
        }
        onFileUpdated: {
            uploadStatusRow.visible = fileInformation.remote.is_uploading_active;
            if (uploadStatusRow.visible) {
                uploadingProgressBar.maximumValue = fileInformation.size;
                uploadingProgressBar.value = fileInformation.remote.uploaded_size;
            }
        }
        onEmojiSearchSuccessful: {
            chatPage.emojiProposals = result;
        }
        onErrorReceived: {
            Functions.handleErrorMessage(code, message);
        }
        onReceivedMessage: {
            if (message.is_pinned) {
                Debug.log("[ChatPage] Received pinned message");
                pinnedMessageItem.pinnedMessage = message;
            }
            if (chatInformation.draft_message && messageId === chatInformation.draft_message.reply_to_message_id) {
                newMessageInReplyToRow.inReplyToMessage = message;
            }
            Debug.log("Received message ID: " + messageId + ", message ID to show: " + chatPage.messageIdToShow)
            if (chatPage.messageIdToShow && chatPage.messageIdToShow === String(messageId)) {
                messageOverlayLoader.overlayMessage = message;
                messageOverlayLoader.active = true;
            }
        }
        onSecretChatReceived: {
            if (secretChatId === chatInformation.type.secret_chat_id) {
                Debug.log("[ChatPage] Received detailed information about this secret chat");
                chatPage.secretChatDetails = secretChat;
                updateChatPartnerStatusText();
                chatPage.isSecretChatReady = chatPage.secretChatDetails.state["@type"] === "secretChatStateReady";
            }
        }
        onSecretChatUpdated: {
            if (secretChatId.toString() === chatInformation.type.secret_chat_id.toString()) {
                Debug.log("[ChatPage] Detailed information about this secret chat was updated");
                chatPage.secretChatDetails = secretChat;
                updateChatPartnerStatusText();
                chatPage.isSecretChatReady = chatPage.secretChatDetails.state["@type"] === "secretChatStateReady";
            }
        }
        onCallbackQueryAnswer: {
            if(text.length > 0) { // ignore bool "alert", just show as notification:
                appNotification.show(Emoji.emojify(text, Theme.fontSizeSmall));
            }
            if(url.length > 0) {
                Functions.handleLink(url);
            }
        }
        onUserFullInfoReceived: {
            if ((isPrivateChat || isSecretChat) && userFullInfo["@extra"] === chatPartnerInformation.id.toString()) {
                chatPage.botInformation = userFullInfo;
            }
        }
        onUserFullInfoUpdated: {
            if ((isPrivateChat || isSecretChat) && userId === chatPartnerInformation.id) {
                chatPage.botInformation = userFullInfo;
            }
        }
        onSponsoredMessageReceived: {
            chatPage.containsSponsoredMessages = true;
        }
        onReactionsUpdated: {
            availableReactions = tdLibWrapper.getChatReactions(chatInformation.id);
        }
    }

    Connections {
        target: chatModel
        onMessagesReceived: {
            var proxyIndex = chatProxyModel.mapRowFromSource(modelIndex, -1);
            Debug.log("[ChatPage] Messages received, view has ", chatView.count, " messages, last known message index ", proxyIndex, "("+modelIndex+"), own messages were read before index ", lastReadSentIndex);
            if (totalCount === 0) {
                if (chatPage.iterativeInitialization) {
                    chatPage.iterativeInitialization = false;
                    Debug.log("[ChatPage] actually, skipping that: No Messages in Chat.");
                    chatView.positionViewAtEnd();
                    chatPage.loading = false;
                    return;
                } else {
                    chatPage.iterativeInitialization = true;
                }
            }

            chatView.lastReadSentIndex = lastReadSentIndex;
            chatView.scrollToIndex(proxyIndex);
            chatPage.loading = false;
            if (chatOverviewItem.visible && proxyIndex >= (chatView.count - 10)) {
                chatView.inCooldown = true;
                chatModel.triggerLoadMoreFuture();
            }

            if (chatView.height > chatView.contentHeight) {
                Debug.log("[ChatPage] Chat content quite small...");
                viewMessageTimer.queueViewMessage(chatView.count - 1);
            }

            chatViewCooldownTimer.restart();
            chatViewStartupReadTimer.restart();

            /*
            // Double-tap for reactions is currently disabled, let's see if we'll ever need it again
            var remainingDoubleTapHints = appSettings.remainingDoubleTapHints;
            Debug.log("Remaining double tap hints: " + remainingDoubleTapHints);
            if (remainingDoubleTapHints > 0) {
                doubleTapHintTimer.start();
                tapHint.visible = true;
                tapHintLabel.visible = true;
                appSettings.remainingDoubleTapHints = remainingDoubleTapHints - 1;
            }
             */
        }
        onNewMessageReceived: {
            if (( chatView.manuallyScrolledToBottom && Qt.application.state === Qt.ApplicationActive ) || message.sender_id.user_id === chatPage.myUserId) {
                Debug.log("[ChatPage] Own message received or was scrolled to bottom, scrolling down to see it...");
                chatView.scrollToIndex(chatView.count - 1);
                viewMessageTimer.queueViewMessage(chatView.count - 1);
            }
        }
        onUnreadCountUpdated: {
            Debug.log("[ChatPage] Unread count updated, new count: ", unreadCount);
            chatInformation.unread_count = unreadCount;
            chatUnreadMessagesItem.visible = ( !chatPage.loading && unreadCount > 0 && chatOverviewItem.visible );
            chatUnreadMessagesCount.text = Functions.formatUnreadCount(unreadCount)
        }
        onLastReadSentMessageUpdated: {
            Debug.log("[ChatPage] Updating last read sent index, new index: ", lastReadSentIndex);
            chatView.lastReadSentIndex = lastReadSentIndex;
        }
        onMessagesIncrementalUpdate: {
            var proxyIndex = chatProxyModel.mapRowFromSource(modelIndex, -1);
            Debug.log("Incremental update received. View now has ", chatView.count, " messages, view is on index ", proxyIndex, "("+modelIndex+"), own messages were read before index ", lastReadSentIndex);
            chatView.lastReadSentIndex = lastReadSentIndex;
            if (!chatPage.isInitialized) {
                if (proxyIndex > -1) {
                    chatView.scrollToIndex(proxyIndex);
                }
            }
            if (chatView.height > chatView.contentHeight) {
                Debug.log("[ChatPage] Chat content quite small...");
                viewMessageTimer.queueViewMessage(chatView.count - 1);
            } else if (chatPage.messageIdToScrollTo && chatPage.messageIdToScrollTo != "") {
                showMessage(chatPage.messageIdToScrollTo, false)
            }
            chatViewCooldownTimer.restart();
            chatViewStartupReadTimer.restart();
        }
        onNotificationSettingsUpdated: {
            chatInformation = chatModel.getChatInformation();
            muteChatMenuItem.text = chatInformation.notification_settings.mute_for > 0 ? qsTr("Unmute Chat") : qsTr("Mute Chat");
        }
        onPinnedMessageChanged: {
            chatInformation = chatModel.getChatInformation();
            if (chatInformation.pinned_message_id.toString() !== "0") {
                Debug.log("[ChatPage] Loading pinned message ", chatInformation.pinned_message_id);
                tdLibWrapper.getMessage(chatInformation.id, chatInformation.pinned_message_id);
            } else {
                pinnedMessageItem.pinnedMessage = undefined;
            }
        }
    }

    Connections {
        target: chatListModel
        onChatJoined: {
            appNotification.show(qsTr("You joined the chat %1").arg(chatTitle));
        }
    }

    Timer {
        id: lostFocusTimer
        interval: 200
        running: false
        repeat: false
        onTriggered: {
            newMessageTextField.forceActiveFocus();
        }
    }

    Timer {
        id: textReplacementTimer
        interval: 600
        running: false
        repeat: false
        onTriggered: {
            handleMessageTextReplacement(newMessageTextField.text, newMessageTextField.cursorPosition);
        }
    }

    Timer {
        id: chatContactTimeUpdater
        interval: 60000
        running: isPrivateChat || isSecretChat
        repeat: true
        onTriggered: {
            updateChatPartnerStatusText();
        }
    }
    Timer {
        id: viewMessageTimer
        interval: appSettings.delayMessageRead ? 1000 : 0
        property int lastQueuedIndex: -1
        function queueViewMessage(index) {
            if (index > lastQueuedIndex) {
                lastQueuedIndex = index;
                start();
            }
        }

        onTriggered: {
            Debug.log("scroll position changed, message index: ", lastQueuedIndex);
            Debug.log("unread count: ", chatInformation.unread_count);
            var modelIndex = chatProxyModel.mapRowToSource(lastQueuedIndex);
            var messageToRead = chatModel.getMessage(modelIndex);
            if (messageToRead['@type'] === "sponsoredMessage") {
                Debug.log("sponsored message to read: ", messageToRead.id);
                tdLibWrapper.viewMessage(chatInformation.id, messageToRead.message_id, false);
            } else if (chatInformation.unread_count > 0 && lastQueuedIndex > -1) {
                if (messageToRead) {
                    Debug.log("message to read: ", messageToRead.id);
                    var messageId = messageToRead.id;
                    var type = messageToRead.content["@type"];
                    if (messageToRead.media_album_id !== '0') {
                        var albumIds = chatModel.getMessageIdsForAlbum(messageToRead.media_album_id);
                        if (albumIds.length > 0) {
                            messageId = albumIds[albumIds.length - 1];
                            Debug.log("message to read last album message id: ", messageId);
                        }
                    }
                    if (messageId) {
                        tdLibWrapper.viewMessage(chatInformation.id, messageId, false);
                    }
                }
                lastQueuedIndex = -1
            }
            if (chatInformation.unread_count === 0) {
                tdLibWrapper.readAllChatMentions(chatInformation.id);
                tdLibWrapper.readAllChatReactions(chatInformation.id);
            }
        }
    }

    Drawer {
        id: messageOptionsDrawer

        property var myMessage: ({})
        property var userInformation: ({})
        property var additionalItemsModel: 0
        property var sourceItem
        property bool showCopyMessageToClipboardMenuItem
        property bool showForwardMessageMenuItem
        property bool showDeleteMessageMenuItem

        property list<NamedAction> messageOptionsModel: [
            NamedAction {
                visible: messageOptionsDrawer.showCopyMessageToClipboardMenuItem
                name: qsTr("Copy Message to Clipboard")
                action: messageOptionsDrawer.sourceItem.copyMessageToClipboard
            },
            NamedAction {
                visible: messageOptionsDrawer.showForwardMessageMenuItem && messageOptionsDrawer.myMessage.can_be_forwarded
                name: qsTr("Forward Message")
                action: function () {
                    startForwardingMessages([messageOptionsDrawer.myMessage])
                }
            },
            NamedAction {
                visible: canPinMessages()
                name: messageOptionsDrawer.myMessage.is_pinned ? qsTr("Unpin Message") : qsTr("Pin Message")
                action: function () {
                    if (messageOptionsDrawer.myMessage.is_pinned) {
                        Remorse.popupAction(page, qsTr("Message unpinned"), function() { tdLibWrapper.unpinMessage(chatPage.chatInformation.id, messageOptionsDrawer.myMessage.id);
                                                                                         pinnedMessageItem.requestCloseMessage(); } );
                    } else {
                        tdLibWrapper.pinMessage(chatPage.chatInformation.id, messageOptionsDrawer.myMessage.id);
                    }
                }
            },
            NamedAction {
                visible: messageOptionsDrawer.showDeleteMessageMenuItem
                name: qsTr("Delete Message")
                action: messageOptionsDrawer.sourceItem.deleteMessage
            }
        ]

        onOpenChanged: {
            if (open) {
                var jointModel = [];
                for (var j = 0; j < additionalItemsModel.length; j++) {
                    jointModel.push(additionalItemsModel[j]);
                }
                for (var i = 0; i < messageOptionsModel.length; i++) {
                    var item = messageOptionsModel[i]
                    if (item.visible) jointModel.push(item)
                }
                drawerListView.model = jointModel;
                focus = true // Take the focus away from the text field
            }
        }

        anchors.fill: parent
        dock: chatPage.isPortrait ? Dock.Bottom : Dock.Right
        backgroundSize: chatPage.isPortrait ? height / 3 : width / 2

        background: SilicaListView {
            id: drawerListView

            anchors.fill: parent
            clip: true

            VerticalScrollDecorator {}

            header: Row {
                id: drawerHeaderRow
                width: parent.width - ( 2 * Theme.horizontalPageMargin)
                height: messageOptionsLabel.height + Theme.paddingLarge + ( chatPage.isPortrait ? ( 2 * Theme.paddingSmall ) : 0 )
                anchors.horizontalCenter: parent.horizontalCenter
                spacing: Theme.paddingMedium
                Label {
                    id: messageOptionsLabel
                    text: qsTr("Additional Options")
                    color: Theme.highlightColor
                    font.pixelSize: Theme.fontSizeLarge
                    width: parent.width - closeMessageOptionsButton.width - Theme.paddingMedium
                    anchors.verticalCenter: parent.verticalCenter
                    horizontalAlignment: Text.AlignRight

                }
                IconButton {
                    id: closeMessageOptionsButton
                    icon.source: "image://theme/icon-m-clear"
                    anchors.verticalCenter: parent.verticalCenter
                    onClicked: {
                        messageOptionsDrawer.open = false
                    }
                }
            }

            delegate: ListItem {
                Label {
                    width: parent.width - ( 2 * Theme.horizontalPageMargin )
                    text: modelData.name
                    anchors.verticalCenter: parent.verticalCenter
                    anchors.horizontalCenter: parent.horizontalCenter
                    horizontalAlignment: Text.AlignHCenter
                }
                onClicked: {
                    modelData.action();
                    messageOptionsDrawer.open = false
                }
                hidden: !modelData.visible
            }
        }

        SilicaFlickable {
            id: chatContainer

            onContentYChanged: {
                // For some strange reason contentY sometimes is > 0 which doesn't make sense without a PushUpMenu (?)
                // That leads to the problem that the whole flickable is moved slightly (or sometimes considerably) up
                // which creates UX issues... As a workaround we are setting it to 0 in such cases.
                // Better solutions are highly appreciated, contributions always welcome! ;)
                if (contentY > 0) {
                    contentY = 0;
                }
            }

            anchors.fill: parent
            contentHeight: height
            contentWidth: width

            PullDownMenu {
                visible: chatInformation.id !== chatPage.myUserId && !stickerPickerLoader.active && !voiceNoteOverlayLoader.active && !messageOverlayLoader.active && !stickerSetOverlayLoader.active

                MenuItem {
                    id: deleteChatMenuItem
                    visible: chatPage.isPrivateChat
                    onClicked: {
                        var privateChatId = chatInformation.id;
                        Remorse.popupAction(chatPage, qsTr("Deleting chat"), function() {
                            tdLibWrapper.deleteChat(privateChatId);
                            pageStack.pop(pageStack.find( function(page){ return(page._depth === 0)} ));
                        }, 10000);
                    }
                    text: qsTr("Delete Chat")
                }

                MenuItem {
                    id: closeSecretChatMenuItem
                    visible: chatPage.isSecretChat && chatPage.secretChatDetails.state["@type"] !== "secretChatStateClosed"
                    onClicked: {
                        var secretChatId = chatPage.secretChatDetails.id;
                        Remorse.popupAction(chatPage, qsTr("Closing chat"), function() { tdLibWrapper.closeSecretChat(secretChatId) });
                    }
                    text: qsTr("Close Chat")
                }

                MenuItem {
                    id: joinLeaveChatMenuItem
                    visible: (chatPage.isSuperGroup || chatPage.isBasicGroup) && chatGroupInformation && chatGroupInformation.status["@type"] !== "chatMemberStatusBanned"
                    onClicked: {
                        if (chatPage.userIsMember) {
                            var chatId = chatInformation.id;
                            Remorse.popupAction(chatPage, qsTr("Leaving chat"), function() {
                                tdLibWrapper.leaveChat(chatId);
                                // this does not care about the response (ideally type "ok" without further reference) for now
                                pageStack.pop(pageStack.find( function(page){ return(page._depth === 0)} ));
                            });
                        } else {
                            tdLibWrapper.joinChat(chatInformation.id);
                        }
                    }
                    text: chatPage.userIsMember ? qsTr("Leave Chat") : qsTr("Join Chat")
                }

                MenuItem {
                    id: muteChatMenuItem
                    visible: chatPage.userIsMember
                    onClicked: {
                        var newNotificationSettings = chatInformation.notification_settings;
                        if (newNotificationSettings.mute_for > 0) {
                            newNotificationSettings.mute_for = 0;
                        } else {
                            newNotificationSettings.mute_for = 6666666;
                        }
                        newNotificationSettings.use_default_mute_for = false;
                        tdLibWrapper.setChatNotificationSettings(chatInformation.id, newNotificationSettings);
                    }
                    text: chatInformation.notification_settings.mute_for > 0 ? qsTr("Unmute Chat") : qsTr("Mute Chat")
                }

                MenuItem {
                    id: searchInChatMenuItem
                    visible: !chatPage.isSecretChat && chatOverviewItem.visible
                    onClicked: {
                        // This automatically shows the search field as well
                        chatOverviewItem.visible = false;
                        searchInChatField.focus = true;
                    }
                    text: qsTr("Search in Chat")
                }
            }

            BackgroundItem {
                id: headerMouseArea
                height: headerRow.height
                width: parent.width
                onClicked: {
                    if (chatPage.isSelecting) {
                        chatPage.selectedMessages = [];
                    } else {
                        pageStack.navigateForward();
                    }
                }
            }

            Column {
                id: chatColumn
                width: parent.width
                height: parent.height

                Row {
                    id: headerRow
                    width: parent.width - (3 * Theme.horizontalPageMargin)
                    height: chatOverviewItem.height + ( chatPage.isPortrait ? (2 * Theme.paddingMedium) : (2 * Theme.paddingSmall) )
                    anchors.horizontalCenter: parent.horizontalCenter
                    spacing: Theme.paddingMedium

                    Item {
                        width: chatOverviewItem.height
                        height: chatOverviewItem.height
                        anchors.bottom: parent.bottom
                        anchors.bottomMargin: chatPage.isPortrait ? Theme.paddingMedium : Theme.paddingSmall

                        ProfileThumbnail {
                            id: chatPictureThumbnail
                            replacementStringHint: chatNameText.text
                            width: parent.height
                            height: parent.height

                            // Setting it directly may cause an stale state for the thumbnail in case the chat page
                            // was previously loaded with a picture and now it doesn't have one. Instead setting it
                            // when the ChatModel indicates a change. This also avoids flickering when the page is loaded...
                            Connections {
                                target: chatModel
                                onSmallPhotoChanged: {
                                    chatPictureThumbnail.photoData = chatModel.smallPhoto;
                                }
                            }
                        }

                        Rectangle {
                            id: chatSecretBackground
                            color: Theme.rgba(Theme.overlayBackgroundColor, Theme.opacityFaint)
                            width: chatPage.isPortrait ? Theme.fontSizeLarge : Theme.fontSizeMedium
                            height: width
                            anchors.left: parent.left
                            anchors.bottom: parent.bottom
                            radius: parent.width / 2
                            visible: chatPage.isSecretChat
                        }

                        Image {
                            source: "image://theme/icon-s-secure"
                            width: chatPage.isPortrait ? Theme.fontSizeSmall : Theme.fontSizeExtraSmall
                            height: width
                            anchors.centerIn: chatSecretBackground
                            visible: chatPage.isSecretChat
                        }

                    }

                    Item {
                        id: chatOverviewItem
                        opacity: visible ? 1 : 0
                        Behavior on opacity { FadeAnimation {} }
                        width: parent.width - chatPictureThumbnail.width - Theme.paddingMedium
                        height: chatNameText.height + chatStatusText.height
                        anchors.bottom: parent.bottom
                        anchors.bottomMargin: chatPage.isPortrait ? Theme.paddingMedium : Theme.paddingSmall
                        Label {
                            id: chatNameText
                            width: Math.min(implicitWidth, parent.width)
                            anchors.right: parent.right
                            text: chatInformation.title !== "" ? Emoji.emojify(chatInformation.title, font.pixelSize) : qsTr("Unknown")
                            textFormat: Text.StyledText
                            font.pixelSize: chatPage.isPortrait ? Theme.fontSizeLarge : Theme.fontSizeMedium
                            font.family: Theme.fontFamilyHeading
                            color: Theme.highlightColor
                            truncationMode: TruncationMode.Fade
                            maximumLineCount: 1
                        }
                        Label {
                            id: chatStatusText
                            width: Math.min(implicitWidth, parent.width)
                            anchors {
                                right: parent.right
                                bottom: parent.bottom
                            }
                            text: ""
                            textFormat: Text.StyledText
                            font.pixelSize: chatPage.isPortrait ? Theme.fontSizeExtraSmall : Theme.fontSizeTiny
                            font.family: Theme.fontFamilyHeading
                            color: headerMouseArea.pressed ? Theme.secondaryHighlightColor : Theme.secondaryColor
                            truncationMode: TruncationMode.Fade
                            maximumLineCount: 1
                        }
                    }

                    Item {
                        id: searchInChatItem
                        visible: !chatOverviewItem.visible
                        opacity: visible ? 1 : 0
                        Behavior on opacity { FadeAnimation {} }
                        width: parent.width - chatPictureThumbnail.width - Theme.paddingMedium
                        height: searchInChatField.height
                        anchors.bottom: parent.bottom
                        anchors.bottomMargin: chatPage.isPortrait ? Theme.paddingSmall : 0

                        SearchField {
                            id: searchInChatField
                            visible: false
                            width: visible ? parent.width : 0
                            placeholderText: qsTr("Search in chat...")
                            active: searchInChatItem.visible
                            canHide: text === ""

                            onTextChanged: {
                                searchInChatTimer.restart();
                            }

                            onHideClicked: {
                                resetFocus();
                            }

                            EnterKey.iconSource: "image://theme/icon-m-enter-close"
                            EnterKey.onClicked: {
                                resetFocus();
                            }
                        }
                    }
                }


                PinnedMessageItem {
                    id: pinnedMessageItem
                    onRequestShowMessage: {
                        messageOverlayLoader.overlayMessage = pinnedMessageItem.pinnedMessage;
                        messageOverlayLoader.active = true;
                    }
                    onRequestCloseMessage: {
                        messageOverlayLoader.overlayMessage = undefined;
                        messageOverlayLoader.active = false;
                    }
                }

                Item {
                    id: chatViewItem
                    width: parent.width
                    height: parent.height - headerRow.height - pinnedMessageItem.height - newMessageColumn.height - selectedMessagesActions.height

                    property int previousHeight;

                    Component.onCompleted: {
                        previousHeight = height;
                    }

                    onHeightChanged: {
                        if (previousHeight > height) {
                            var deltaHeight = previousHeight - height;
                            chatView.contentY = chatView.contentY + deltaHeight;
                        } else {
                            chatView.handleScrollPositionChanged();
                        }
                        previousHeight = height;
                    }

                    Timer {
                        id: chatViewCooldownTimer
                        interval: 2000
                        repeat: false
                        running: false
                        onTriggered: {
                            Debug.log("[ChatPage] Cooldown completed...");
                            chatView.inCooldown = false;

                            if (!chatPage.isInitialized) {
                                Debug.log("Page is initialized!");
                                chatPage.isInitialized = true;
                                chatView.handleScrollPositionChanged();
                            }
                        }
                    }

                    Timer {
                        id: chatViewStartupReadTimer
                        interval: 200
                        repeat: false
                        running: false
                        onTriggered: {
                            if (!chatPage.isInitialized) {
                                Debug.log("Page is initialized!");
                                chatPage.isInitialized = true;
                                chatView.handleScrollPositionChanged();
                                if (chatPage.isChannel) {
                                    tdLibWrapper.getChatSponsoredMessage(chatInformation.id);
                                }
                                if (typeof chatPage.messageToShow !== "undefined" && chatPage.messageToShow !== {}) {
                                    messageOverlayLoader.overlayMessage = chatPage.messageToShow;
                                    messageOverlayLoader.active = true;
                                }
                                if (chatPage.messageIdToShow) {
                                    tdLibWrapper.getMessage(chatPage.chatInformation.id, chatPage.messageIdToShow);
                                }
                            }
                        }
                    }

                    Loader {
                        asynchronous: true
                        active: chatView.blurred
                        anchors.fill: chatView
                        sourceComponent: Component {
                            FastBlur {
                                source: chatView
                                radius: Theme.paddingLarge
                            }
                        }
                    }

                    SilicaListView {
                        id: chatView

                        visible: !blurred
                        property bool blurred: messageOverlayLoader.item || stickerPickerLoader.item || voiceNoteOverlayLoader.item || inlineQuery.hasOverlay || stickerSetOverlayLoader.item

                        anchors.fill: parent
                        opacity: chatPage.loading ? 0 : 1
                        Behavior on opacity { FadeAnimation {} }
                        clip: true
                        highlightMoveDuration: 0
                        highlightResizeDuration: 0
                        property int lastReadSentIndex: -1
                        property bool inCooldown: false
                        property bool manuallyScrolledToBottom
                        property QtObject precalculatedValues: QtObject {
                            readonly property alias page: chatPage
                            readonly property bool showUserInfo: page.isBasicGroup || ( page.isSuperGroup && !page.isChannel)
                            readonly property int profileThumbnailDimensions: showUserInfo ? Theme.itemSizeSmall : 0
                            readonly property int pageMarginDouble: 2 * Theme.horizontalPageMargin
                            readonly property int paddingMediumDouble: 2 * Theme.paddingMedium
                            readonly property int entryWidth: chatView.width - pageMarginDouble
                            readonly property int textItemWidth: entryWidth - profileThumbnailDimensions - Theme.paddingSmall
                            readonly property int backgroundWidth: page.isPrivateChat ? textItemWidth - pageMarginDouble : textItemWidth  //уменьшенная ширина сообщений для приватных чатов
                            readonly property int backgroundRadius: textItemWidth/50
                            readonly property int textColumnWidth: backgroundWidth - Theme.horizontalPageMargin
                            readonly property int messageInReplyToHeight: Theme.fontSizeExtraSmall * 2.571428571 + Theme.paddingSmall;
                            readonly property int webPagePreviewHeight: ( (textColumnWidth * 2 / 3) + (6 * Theme.fontSizeExtraSmall) + ( 7 * Theme.paddingSmall) )
                            readonly property bool pageIsSelecting: chatPage.isSelecting
                        }

                        function handleScrollPositionChanged() {
                            Debug.log("Current position: ", chatView.contentY);
                            Debug.log("Contains sponsored messages?", chatPage.containsSponsoredMessages);
                            if (chatOverviewItem.visible && ( chatInformation.unread_count > 0 || chatPage.containsSponsoredMessages ) ) {
                                var bottomIndex = chatView.indexAt(chatView.contentX, ( chatView.contentY + chatView.height - Theme.horizontalPageMargin ));
                                if (bottomIndex > -1) {
                                    viewMessageTimer.queueViewMessage(bottomIndex)
                                }
                            } else {
                                tdLibWrapper.readAllChatMentions(chatInformation.id);
                                tdLibWrapper.readAllChatReactions(chatInformation.id);
                            }
                            manuallyScrolledToBottom = chatView.atYEnd
                        }

                        function scrollToIndex(index, mode) {
                            if(index > 0 && index < chatView.count) {
                                positionViewAtIndex(index, (mode === undefined) ? ListView.Contain : mode)
                                if(index === chatView.count - 1) {
                                    manuallyScrolledToBottom = true;
                                    if(!chatView.atYEnd) {
                                        chatView.positionViewAtEnd();
                                    }
                                }
                            }
                        }

                        onContentYChanged: {
                            if (!chatPage.loading && !chatView.inCooldown) {
                                if (chatView.indexAt(chatView.contentX, chatView.contentY) < 10) {
                                    Debug.log("[ChatPage] Trying to get older history items...");
                                    chatView.inCooldown = true;
                                    chatModel.triggerLoadMoreHistory();
                                } else if (chatOverviewItem.visible && chatView.indexAt(chatView.contentX, chatView.contentY) > ( count - 10)) {
                                    Debug.log("[ChatPage] Trying to get newer history items...");
                                    chatView.inCooldown = true;
                                    chatModel.triggerLoadMoreFuture();
                                }
                            }
                        }

                        onMovementEnded: {
                            handleScrollPositionChanged();
                        }

                        onQuickScrollAnimatingChanged: {
                            if (!quickScrollAnimating) {
                                handleScrollPositionChanged();
                                if(atYEnd) { // handle some false guesses from quick scroll
                                    chatView.scrollToIndex(chatView.count - 2)
                                    chatView.scrollToIndex(chatView.count - 1)
                                }
                            }
                        }

                        BoolFilterModel {
                            id: chatProxyModel
                            sourceModel: chatModel
                            filterRoleName: "album_entry_filter"
                            filterValue: false
                        }
                        model: chatProxyModel
                        header: Component {
                            Loader {
                                active: !!chatPage.botInformation
                                        && !!chatPage.botInformation.bot_info && chatPage.botInformation.bot_info.description.length > 0
                                asynchronous: true
                                width: chatView.width
                                sourceComponent: Component {
                                    Label {
                                        id: botInfoLabel
                                        topPadding: Theme.paddingLarge
                                        bottomPadding: Theme.paddingLarge
                                        leftPadding: Theme.horizontalPageMargin
                                        rightPadding: Theme.horizontalPageMargin
                                        text: Emoji.emojify(chatPage.botInformation.bot_info.description, font.pixelSize)
                                        font.pixelSize: Theme.fontSizeSmall
                                        color: Theme.highlightColor
                                        wrapMode: Text.Wrap
                                        textFormat: Text.StyledText
                                        horizontalAlignment: Text.AlignHCenter
                                        onLinkActivated: {
                                            var chatCommand = Functions.handleLink(link);
                                            if(chatCommand) {
                                                tdLibWrapper.sendTextMessage(chatInformation.id, chatCommand);
                                            }
                                        }
                                        linkColor: Theme.primaryColor
                                        visible: (text !== "")
                                    }
                                }
                            }
                        }

                        function getContentComponentHeight(contentType, content, parentWidth, albumEntries) {
                            var unit;
                            switch(contentType) {
                            case "messageAnimatedEmoji":
                                return content.animated_emoji.sticker.height;
                            case "messageAnimation":
                                return Functions.getVideoHeight(parentWidth, content.animation);
                            case "messageAudio":
                            case "messageVoiceNote":
                            case "messageDocument":
                                return Theme.itemSizeLarge;
                            case "messageGame":
                                return parentWidth * 0.66666666 + Theme.itemSizeLarge; // 2 / 3;
                            case "messageLocation":
                            case "messageVenue":
                                return parentWidth * 0.66666666; // 2 / 3;
                            case "messagePhoto":
                                if(albumEntries > 0) {
                                    unit = (parentWidth * 0.66666666)
                                    return (albumEntries % 2 !== 0 ? unit * 0.75 : 0) + unit * albumEntries * 0.25
                                }
                                var biggest = content.photo.sizes[content.photo.sizes.length - 1];
                                var aspectRatio = biggest.width/biggest.height;
                                return Math.max(Theme.itemSizeExtraSmall, Math.min(parentWidth * 0.66666666, parentWidth / aspectRatio));
                            case "messagePoll":
                                return Theme.itemSizeSmall * (4 + content.poll.options);
                            case "messageSticker":
                                return content.sticker.height;
                            case "messageVideo":
                                if(albumEntries > 0) {
                                    unit = (parentWidth * 0.66666666)
                                    return (albumEntries % 2 !== 0 ? unit * 0.75 : 0) + unit * albumEntries * 0.25
                                }
                                return Functions.getVideoHeight(parentWidth, content.video);
                            case "messageVideoNote":
                                return parentWidth
                            }
                        }

                        readonly property var delegateMessagesContent: [
                            "messageAnimatedEmoji",
                            "messageAnimation",
                            "messageAudio",
                            // "messageContact",
                            // "messageDice"
                            "messageDocument",
                            "messageGame",
                            // "messageInvoice",
                            "messageLocation",
                            // "messagePassportDataSent",
                            // "messagePaymentSuccessful",
                            "messagePhoto",
                            "messagePoll",
                            // "messageProximityAlertTriggered",
                            "messageSticker",
                            "messageVenue",
                            "messageVideo",
                            "messageVideoNote",
                            "messageVoiceNote"
                        ]

                        readonly property var simpleDelegateMessages: ["messageBasicGroupChatCreate",
                                                                       "messageChatAddMembers",
                                                                       "messageChatChangePhoto",
                                                                       "messageChatChangeTitle",
                                                                       "messageChatDeleteMember",
                                                                       "messageChatDeletePhoto",
                                                                       "messageChatJoinByLink",
                                                                       "messageChatSetTtl",
                                                                       "messageChatUpgradeFrom",
                                                                       "messageContactRegistered",
                                                                       // "messageExpiredPhoto", "messageExpiredVideo","messageWebsiteConnected"
                                                                       "messageGameScore",
                                                                       "messageChatUpgradeTo",
                                                                       "messageCustomServiceAction",
                                                                       "messagePinMessage",
                                                                       "messageScreenshotTaken",
                                                                       "messageSupergroupChatCreate",
                                                                       "messageUnsupported"]
                        delegate: Loader {
                            width: chatView.width
                            Component {
                                id: messageListViewItemComponent
                                MessageListViewItem {
                                    precalculatedValues: chatView.precalculatedValues
                                    chatId: chatModel.chatId
                                    myMessage: model.display
                                    messageId: model.message_id
                                    messageAlbumMessageIds: model.album_message_ids
                                    messageViewCount: model.view_count
                                    reactions: model.reactions
                                    chatReactions: availableReactions
                                    messageIndex: chatProxyModel.mapRowToSource(model.index)
                                    hasContentComponent: !!myMessage.content && chatView.delegateMessagesContent.indexOf(model.content_type) > -1
                                    canReplyToMessage: chatPage.canSendMessages
                                    onReplyToMessage: {
                                        newMessageInReplyToRow.inReplyToMessage = myMessage
                                        newMessageTextField.focus = true
                                    }
                                    onEditMessage: {
                                        newMessageColumn.editMessageId = messageId
                                        newMessageTextField.text = Functions.getMessageText(myMessage, false, chatPage.myUserId, true)
                                        newMessageTextField.focus = true
                                    }
                                    onForwardMessage: {
                                        startForwardingMessages([myMessage])
                                    }
                                }
                            }
                            Component {
                                id: messageListViewItemSimpleComponent
                                MessageListViewItemSimple {}
                            }
                            Component {
                                id: messageListViewItemHiddenComponent
                                Item {
                                    property var myMessage: display
                                    property bool senderIsUser: myMessage.sender_id["@type"] === "messageSenderUser"
                                    property var userInformation: senderIsUser ? tdLibWrapper.getUserInformation(myMessage.sender_id.user_id) : null
                                    property bool isOwnMessage: senderIsUser && chatPage.myUserId === myMessage.sender_id.user_id
                                    height: 1
                                }
                            }
                            sourceComponent: chatView.simpleDelegateMessages.indexOf(model.content_type) > -1
                                               ? messageListViewItemSimpleComponent
                                               : messageListViewItemComponent
                        }
                        VerticalScrollDecorator { flickable: chatView }

                        ViewPlaceholder {
                            id: chatViewPlaceholder
                            enabled: chatView.count === 0
                            text: (chatPage.isSecretChat && !chatPage.isSecretChatReady) ? qsTr("This secret chat is not yet ready. Your chat partner needs to go online first.") : qsTr("This chat is empty.")
                        }
                    }

                    Column {
                        width: parent.width
                        height: loadingLabel.height + loadingBusyIndicator.height + Theme.paddingMedium
                        spacing: Theme.paddingMedium
                        anchors.verticalCenter: parent.verticalCenter

                        opacity: chatPage.loading ? 1 : 0
                        Behavior on opacity { FadeAnimation {} }
                        visible: chatPage.loading

                        InfoLabel {
                            id: loadingLabel
                            text: qsTr("Loading messages...")
                        }

                        BusyIndicator {
                            id: loadingBusyIndicator
                            anchors.horizontalCenter: parent.horizontalCenter
                            running: chatPage.loading
                            size: BusyIndicatorSize.Large
                        }
                    }

                    Item {
                        id: chatUnreadMessagesItem
                        width: chatUnreadMessagesCount.width + Theme.fontSizeLarge / 2
                        height: Theme.fontSizeHuge
                        anchors.right: parent.right
                        anchors.rightMargin: Theme.paddingMedium
                        anchors.bottom: parent.bottom
                        anchors.bottomMargin: Theme.paddingMedium
                        visible: !chatPage.loading && chatInformation.unread_count > 0 && chatOverviewItem.visible
                        Rectangle {
                            id: chatUnreadMessagesCountBackground
                            color: Theme.highlightBackgroundColor
                            anchors.fill: parent
                            radius: width / 2
                            visible: chatUnreadMessagesItem.visible
                        }

                        Text {
                            id: chatUnreadMessagesCount
                            font.pixelSize: Theme.fontSizeMedium
                            font.bold: true
                            color: Theme.primaryColor
                            anchors.centerIn: chatUnreadMessagesCountBackground
                            visible: chatUnreadMessagesItem.visible
                            text: Functions.formatUnreadCount(chatInformation.unread_count)
                        }
                        MouseArea {
                            anchors.fill: parent
                            onClicked: {
                                chatView.scrollToIndex(chatView.count - 1 - chatInformation.unread_count)
                            }
                        }
                    }

                    Loader {
                        id: stickerPickerLoader
                        active: false
                        asynchronous: true
                        width: parent.width
                        height: active ? parent.height : 0
                        source: "../components/StickerPicker.qml"
                    }

                    Connections {
                        target: stickerPickerLoader.item
                        onStickerPicked: {
                            Debug.log("Sticker picked: " + stickerId);
                            stickerManager.setNeedsReload(true);
                            tdLibWrapper.sendStickerMessage(chatInformation.id, stickerId, newMessageColumn.replyToMessageId);
                            stickerPickerLoader.active = false;
                            attachmentOptionsFlickable.isNeeded = false;
                            newMessageInReplyToRow.inReplyToMessage = null;
                            newMessageColumn.editMessageId = "0";
                        }
                    }

                    Loader {
                        id: messageOverlayLoader

                        property var overlayMessage;

                        active: false
                        asynchronous: true
                        width: parent.width
                        height: active ? parent.height : 0
                        sourceComponent: Component {
                            MessageOverlayFlickable {
                                overlayMessage: messageOverlayLoader.overlayMessage
                                showHeader: !chatPage.isChannel
                                onRequestClose: {
                                    messageOverlayLoader.active = false;
                                }
                            }
                        }
                    }

                    Loader {
                        id: voiceNoteOverlayLoader
                        active: false
                        asynchronous: true
                        width: parent.width
                        height: active ? parent.height : 0
                        source: "../components/VoiceNoteOverlay.qml"
                        onActiveChanged: {
                            if (!active) {
                                fernschreiberUtils.stopRecordingVoiceNote();
                            }
                        }
                    }

                    Loader {
                        id: stickerSetOverlayLoader

                        property string stickerSetId;

                        active: false
                        asynchronous: true
                        width: parent.width
                        height: active ? parent.height : 0
                        sourceComponent: Component {
                            StickerSetOverlay {
                                stickerSetId: stickerSetOverlayLoader.stickerSetId
                                onRequestClose: {
                                    stickerSetOverlayLoader.active = false;
                                }
                            }
                        }

                        onActiveChanged: {
                            if (active) {
                                attachmentOptionsFlickable.isNeeded = false;
                            }
                        }
                    }

                    InlineQuery {
                        id: inlineQuery
                        textField: newMessageTextField
                        chatId: chatInformation.id
                    }
                }

                Column {
                    id: newMessageColumn
                    spacing: Theme.paddingSmall
                    topPadding: Theme.paddingSmall + inlineQuery.buttonPadding
                    anchors.horizontalCenter: parent.horizontalCenter
                    visible: height > 0
                    width: parent.width - ( 2 * Theme.horizontalPageMargin )
                    height: isNeeded ? implicitHeight : 0
                    Behavior on height { SmoothedAnimation { duration: 200 } }

                    readonly property bool isNeeded: !chatPage.isSelecting && chatPage.canSendMessages
                    property string replyToMessageId: "0";
                    property string editMessageId: "0";

                    InReplyToRow {
                        onInReplyToMessageChanged: {
                            if (inReplyToMessage) {
                                newMessageColumn.replyToMessageId = newMessageInReplyToRow.inReplyToMessage.id.toString()
                                newMessageInReplyToRow.visible = true;
                            } else {
                                newMessageInReplyToRow.visible = false;
                                newMessageColumn.replyToMessageId = "0";
                            }
                        }

                        editable: true

                        onClearRequested: {
                            newMessageInReplyToRow.inReplyToMessage = null;
                        }

                        id: newMessageInReplyToRow
                        myUserId: chatPage.myUserId
                        visible: false
                    }

                    Flickable {
                        id: attachmentOptionsFlickable

                        property bool isNeeded: false
                        width: chatPage.width
                        x: -Theme.horizontalPageMargin
                        height: isNeeded && !inlineQuery.userNameIsValid ? attachmentOptionsRow.height : 0
                        Behavior on height { SmoothedAnimation { duration: 200 } }
                        visible: height > 0
                        contentHeight: attachmentOptionsRow.height
                        contentWidth: Math.max(width, attachmentOptionsRow.width)
                        property bool fadeRight: (attachmentOptionsRow.width-contentX) > width
                        property bool fadeLeft: !fadeRight && contentX > 0
                        layer.enabled: fadeRight || fadeLeft
                        layer.effect: OpacityRampEffectBase {
                            direction: attachmentOptionsFlickable.fadeRight ? OpacityRamp.LeftToRight : OpacityRamp.RightToLeft
                            source: attachmentOptionsFlickable
                            slope: 1 + 6 * (chatPage.width) / Screen.width
                            offset: 1 - 1 / slope
                        }


                        Row {
                            id: attachmentOptionsRow

                            height: attachImageIconButton.height

                            anchors.right: parent.right
                            layoutDirection: Qt.RightToLeft
                            spacing: Theme.paddingMedium
                            leftPadding: Theme.horizontalPageMargin
                            rightPadding: Theme.horizontalPageMargin

                            IconButton {
                                id: attachImageIconButton
                                visible: chatPage.hasSendPrivilege("can_send_photos")
                                icon.source: "image://theme/icon-m-image"
                                onClicked: {
                                    var picker = pageStack.push("Sailfish.Pickers.ImagePickerPage", {
                                        allowedOrientations: chatPage.allowedOrientations
                                    })
                                    picker.selectedContentPropertiesChanged.connect(function(){
                                        attachmentOptionsFlickable.isNeeded = false;
                                        Debug.log("Selected document: ", picker.selectedContentProperties.filePath );
                                        attachmentPreviewRow.fileProperties = picker.selectedContentProperties;
                                        attachmentPreviewRow.isPicture = true;
                                        controlSendButton();
                                    })
                                }
                            }
                            IconButton {
                                visible: chatPage.hasSendPrivilege("can_send_videos")
                                icon.source: "image://theme/icon-m-video"
                                onClicked: {
                                    var picker = pageStack.push("Sailfish.Pickers.VideoPickerPage", {
                                        allowedOrientations: chatPage.allowedOrientations
                                    })
                                    picker.selectedContentPropertiesChanged.connect(function(){
                                        attachmentOptionsFlickable.isNeeded = false;
                                        Debug.log("Selected video: ", picker.selectedContentProperties.filePath );
                                        attachmentPreviewRow.fileProperties = picker.selectedContentProperties;
                                        attachmentPreviewRow.isVideo = true;
                                        controlSendButton();
                                    })
                                }
                            }
                            IconButton {
                                visible: chatPage.hasSendPrivilege("can_send_voice_notes")
                                icon.source: "image://theme/icon-m-mic"
                                icon.sourceSize {
                                    width: Theme.iconSizeMedium
                                    height: Theme.iconSizeMedium
                                }
                                highlighted: down || voiceNoteOverlayLoader.active
                                onClicked: {
                                    voiceNoteOverlayLoader.active = !voiceNoteOverlayLoader.active;
                                    stickerPickerLoader.active = false;
                                }
                            }
                            IconButton {
                                visible: chatPage.hasSendPrivilege("can_send_documents")
                                icon.source: "image://theme/icon-m-document"
                                onClicked: {
                                    var picker = pageStack.push("Sailfish.Pickers.FilePickerPage", {
                                        allowedOrientations: chatPage.allowedOrientations
                                    })
                                    picker.selectedContentPropertiesChanged.connect(function(){
                                        attachmentOptionsFlickable.isNeeded = false;
                                        Debug.log("Selected document: ", picker.selectedContentProperties.filePath );
                                        attachmentPreviewRow.fileProperties = picker.selectedContentProperties;
                                        attachmentPreviewRow.isDocument = true;
                                        controlSendButton();
                                    })
                                }
                            }
                            IconButton {
                                visible: chatPage.hasSendPrivilege("can_send_other_messages")
                                icon.source: "../../images/icon-m-sticker.svg"
                                icon.sourceSize {
                                    width: Theme.iconSizeMedium
                                    height: Theme.iconSizeMedium
                                }
                                highlighted: down || stickerPickerLoader.active
                                onClicked: {
                                    stickerPickerLoader.active = !stickerPickerLoader.active;
                                    voiceNoteOverlayLoader.active = false;
                                }
                            }
                            IconButton {
                                visible: !(chatPage.isPrivateChat || chatPage.isSecretChat) && chatPage.hasSendPrivilege("can_send_polls")
                                icon.source: "image://theme/icon-m-question"
                                onClicked: {
                                    pageStack.push(Qt.resolvedUrl("../pages/PollCreationPage.qml"), { "chatId" : chatInformation.id, groupName: chatInformation.title});
                                    attachmentOptionsFlickable.isNeeded = false;
                                }
                            }
                            IconButton {
                                visible: fernschreiberUtils.supportsGeoLocation() && newMessageTextField.text === ""
                                icon.source: "image://theme/icon-m-location"
                                icon.sourceSize {
                                    width: Theme.iconSizeMedium
                                    height: Theme.iconSizeMedium
                                }
                                onClicked: {
                                    fernschreiberUtils.startGeoLocationUpdates();
                                    attachmentOptionsFlickable.isNeeded = false;
                                    attachmentPreviewRow.isLocation = true;
                                    attachmentPreviewRow.attachmentDescription = qsTr("Location: Obtaining position...");
                                    controlSendButton();
                                }
                            }
                        }

                    }


                    Row {
                        id: attachmentPreviewRow
                        visible: (!!locationData || !!fileProperties || isVoiceNote) && !inlineQuery.userNameIsValid
                        spacing: Theme.paddingMedium
                        width: parent.width
                        layoutDirection: Qt.RightToLeft
                        anchors.right: parent.right

                        property bool isPicture: false;
                        property bool isVideo: false;
                        property bool isDocument: false;
                        property bool isVoiceNote: false;
                        property bool isLocation: false;
                        property var locationData: null;
                        property var geocodedAddress: qsTr("Unknown address")
                        property var fileProperties: null;
                        property string attachmentDescription: "";

                        function getLocationDescription() {
                            return qsTr("Location (%1/%2)").arg(attachmentPreviewRow.locationData.latitude).arg(attachmentPreviewRow.locationData.longitude) + " | "
                                    + qsTr("Accuracy: %1m").arg(attachmentPreviewRow.locationData.horizontalAccuracy) + "\n"
                                    + attachmentPreviewRow.geocodedAddress;
                        }

                        Connections {
                            target: fernschreiberUtils
                            onNewPositionInformation: {
                                attachmentPreviewRow.locationData = positionInformation;
                                if (attachmentPreviewRow.isLocation) {
                                    attachmentPreviewRow.attachmentDescription = attachmentPreviewRow.getLocationDescription();
                                }
                            }
                            onNewGeocodedAddress: {
                                attachmentPreviewRow.geocodedAddress = geocodedAddress;
                                if (attachmentPreviewRow.isLocation) {
                                    attachmentPreviewRow.attachmentDescription = attachmentPreviewRow.getLocationDescription();
                                }
                            }
                        }

                        IconButton {
                            id: removeAttachmentsIconButton
                            icon.source: "image://theme/icon-m-clear"
                            onClicked: {
                                clearAttachmentPreviewRow();
                                controlSendButton();
                            }
                        }

                        Thumbnail {
                            id: attachmentPreviewImage
                            width: Theme.itemSizeMedium
                            height: Theme.itemSizeMedium
                            sourceSize.width: width
                            sourceSize.height: height

                            fillMode: Thumbnail.PreserveAspectCrop
                            mimeType: !!attachmentPreviewRow.fileProperties ? attachmentPreviewRow.fileProperties.mimeType || "" : ""
                            source: !!attachmentPreviewRow.fileProperties ? attachmentPreviewRow.fileProperties.url || "" : ""
                            visible: attachmentPreviewRow.isPicture || attachmentPreviewRow.isVideo
                        }

                        Label {
                            id: attachmentPreviewText
                            font.pixelSize: Theme.fontSizeSmall
                            text: ( attachmentPreviewRow.isVoiceNote || attachmentPreviewRow.isLocation ) ? attachmentPreviewRow.attachmentDescription : ( !!attachmentPreviewRow.fileProperties ? attachmentPreviewRow.fileProperties.fileName || "" : "" );
                            anchors.verticalCenter: parent.verticalCenter

                            width: parent.width - removeAttachmentsIconButton.width - Theme.paddingMedium
                            maximumLineCount: 2
                            wrapMode: Text.Wrap
                            truncationMode: TruncationMode.Fade
                            color: Theme.secondaryColor
                            visible: attachmentPreviewRow.isDocument || attachmentPreviewRow.isVoiceNote || attachmentPreviewRow.isLocation
                        }
                    }

                    Row {
                        id: uploadStatusRow
                        visible: false
                        spacing: Theme.paddingMedium
                        width: parent.width
                        anchors.right: parent.right

                        Text {
                            id: uploadingText
                            font.pixelSize: Theme.fontSizeSmall
                            text: qsTr("Uploading...")
                            anchors.verticalCenter: parent.verticalCenter
                            color: Theme.secondaryColor
                            visible: uploadStatusRow.visible
                        }

                        ProgressBar {
                            id: uploadingProgressBar
                            minimumValue: 0
                            maximumValue: 100
                            value: 0
                            visible: uploadStatusRow.visible
                            width: parent.width - uploadingText.width - Theme.paddingMedium
                        }

                    }

                    Column {
                        id: emojiColumn
                        width: parent.width
                        anchors.horizontalCenter: parent.horizontalCenter
                        visible: emojiProposals ? ( emojiProposals.length > 0 ? true : false ) : false
                        opacity: emojiProposals ? ( emojiProposals.length > 0 ? 1 : 0 ) : 0
                        Behavior on opacity { NumberAnimation {} }
                        spacing: Theme.paddingMedium

                        Flickable {
                            width: parent.width
                            height: emojiResultRow.height + Theme.paddingSmall
                            anchors.horizontalCenter: parent.horizontalCenter
                            contentWidth: emojiResultRow.width
                            clip: true
                            Row {
                                id: emojiResultRow
                                spacing: Theme.paddingMedium
                                Repeater {
                                    model: emojiProposals

                                    Item {
                                        height: singleEmojiRow.height
                                        width: singleEmojiRow.width

                                        Row {
                                            id: singleEmojiRow
                                            spacing: Theme.paddingSmall

                                            Image {
                                                id: emojiPicture
                                                source: "../js/emoji/" + modelData.file_name +".svg"
                                                width: Theme.fontSizeLarge
                                                height: Theme.fontSizeLarge
                                            }

                                        }

                                        MouseArea {
                                            anchors.fill: parent
                                            onClicked: {
                                                replaceMessageText(newMessageTextField.text, newMessageTextField.cursorPosition, modelData.emoji);
                                                emojiProposals = null;
                                            }
                                        }
                                    }

                                }
                            }
                        }
                    }

                    Column {
                        id: atMentionColumn
                        width: parent.width
                        anchors.horizontalCenter: parent.horizontalCenter
                        visible: opacity > 0
                        opacity: knownUsersRepeater.count > 0 ? 1 : 0
                        Behavior on opacity { NumberAnimation {} }
                        height: knownUsersRepeater.count > 0 ? childrenRect.height : 0
                        Behavior on height { SmoothedAnimation { duration: 200 } }
                        spacing: Theme.paddingMedium

                        Flickable {
                            width: parent.width
                            height: atMentionResultRow.height + Theme.paddingSmall
                            anchors.horizontalCenter: parent.horizontalCenter
                            contentWidth: atMentionResultRow.width
                            clip: true
                            Row {
                                id: atMentionResultRow
                                spacing: Theme.paddingMedium
                                Repeater {
                                    id: knownUsersRepeater

                                    Item {
                                        id: knownUserItem
                                        height: singleAtMentionRow.height
                                        width: singleAtMentionRow.width

                                        property string atMentionText: "@" + (user_name ? user_name : user_id + "(" + title + ")");

                                        Row {
                                            id: singleAtMentionRow
                                            spacing: Theme.paddingSmall

                                            Item {
                                                width: Theme.fontSizeHuge
                                                height: Theme.fontSizeHuge
                                                anchors.verticalCenter: parent.verticalCenter
                                                ProfileThumbnail {
                                                    id: atMentionThumbnail
                                                    replacementStringHint: title
                                                    width: parent.width
                                                    height: parent.width
                                                    photoData: photo_small
                                                }
                                            }

                                            Column {
                                                Text {
                                                    text: Emoji.emojify(title, Theme.fontSizeExtraSmall)
                                                    textFormat: Text.StyledText
                                                    color: Theme.primaryColor
                                                    font.pixelSize: Theme.fontSizeExtraSmall
                                                    font.bold: true
                                                }
                                                Text {
                                                    id: userHandleText
                                                    text: user_handle
                                                    textFormat: Text.StyledText
                                                    color: Theme.primaryColor
                                                    font.pixelSize: Theme.fontSizeExtraSmall
                                                }
                                            }
                                        }

                                        MouseArea {
                                            anchors.fill: parent
                                            onClicked: {
                                                replaceMessageText(newMessageTextField.text, newMessageTextField.cursorPosition, knownUserItem.atMentionText);
                                                knownUsersRepeater.model = undefined;
                                            }
                                        }
                                    }

                                }
                            }
                        }
                    }

                    Row {
                        width: parent.width
                        spacing: Theme.paddingSmall
                        visible: newMessageColumn.editMessageId !== "0"

                        Text {
                            width: parent.width - Theme.paddingSmall - removeEditMessageIconButton.width

                            anchors.verticalCenter: parent.verticalCenter

                            id: editMessageText
                            font.pixelSize: Theme.fontSizeSmall
                            font.bold: true
                            text: qsTr("Edit Message")
                            color: Theme.secondaryColor
                        }

                        IconButton {
                            id: removeEditMessageIconButton
                            icon.source: "image://theme/icon-m-clear"
                            onClicked: {
                                newMessageColumn.editMessageId = "0";
                                newMessageTextField.text = "";
                            }
                        }
                    }

                    Row {
                        id: newMessageRow
                        width: parent.width
                        anchors.horizontalCenter: parent.horizontalCenter

                        TextArea {
                            id: newMessageTextField
                            width: parent.width - (attachmentIconButton.visible ? attachmentIconButton.width : 0) - (newMessageSendButton.visible ? newMessageSendButton.width : 0) - (cancelInlineQueryButton.visible ? cancelInlineQueryButton.width : 0)
                            height: Math.min(chatContainer.height / 3, implicitHeight)
                            anchors.verticalCenter: parent.verticalCenter
                            font.pixelSize: Theme.fontSizeSmall
                            placeholderText: qsTr("Your message")
                            labelVisible: false
                            textLeftMargin: 0
                            textTopMargin: 0
                            enabled: !attachmentPreviewRow.isLocation
                            focus: appSettings.focusTextAreaOnChatOpen
                            EnterKey.onClicked: {
                                if (appSettings.sendByEnter) {
                                    var messageText = newMessageTextField.text;
                                    newMessageTextField.text = messageText.substring(0, newMessageTextField.cursorPosition -1) + messageText.substring(newMessageTextField.cursorPosition);
                                    sendMessage();
                                    newMessageTextField.text = "";
                                    if(!appSettings.focusTextAreaAfterSend) {
                                        newMessageTextField.focus = false;
                                    }
                                }
                            }

                            EnterKey.enabled: !inlineQuery.userNameIsValid && (!appSettings.sendByEnter || text.length)
                            EnterKey.iconSource: appSettings.sendByEnter ? "image://theme/icon-m-chat" : "image://theme/icon-m-enter"

                            onTextChanged: {
                                controlSendButton();
                                textReplacementTimer.restart();
                            }
                            onActiveFocusChanged: {
                                if (activeFocus) {
                                    messageOptionsDrawer.open = false
                                }
                            }
                        }

                        IconButton {
                            id: attachmentIconButton
                            icon.source: "image://theme/icon-m-attach?" +  (attachmentOptionsFlickable.isNeeded ? Theme.highlightColor : Theme.primaryColor)
                            anchors.bottom: parent.bottom
                            anchors.bottomMargin: Theme.paddingSmall
                            enabled: !attachmentPreviewRow.visible && !stickerSetOverlayLoader.item
                            visible: !inlineQuery.userNameIsValid
                            onClicked: {
                                if (attachmentOptionsFlickable.isNeeded) {
                                    attachmentOptionsFlickable.isNeeded = false;
                                    stickerPickerLoader.active = false;
                                    voiceNoteOverlayLoader.active = false;
                                } else {
                                    attachmentOptionsFlickable.isNeeded = true;
                                }
                            }
                        }

                        IconButton {
                            id: newMessageSendButton
                            icon.source: "image://theme/icon-m-chat"
                            anchors.bottom: parent.bottom
                            anchors.bottomMargin: Theme.paddingSmall
                            visible: !inlineQuery.userNameIsValid && (!appSettings.sendByEnter || attachmentPreviewRow.visible)
                            enabled: false
                            onClicked: {
                                sendMessage();
                                newMessageTextField.text = "";
                                if(!appSettings.focusTextAreaAfterSend) {
                                    newMessageTextField.focus = false;
                                }
                            }
                        }

                        Item {
                            width: cancelInlineQueryButton.width
                            height: cancelInlineQueryButton.height
                            visible: inlineQuery.userNameIsValid
                            anchors.bottom: parent.bottom
                            anchors.bottomMargin: Theme.paddingSmall

                            IconButton {
                                id: cancelInlineQueryButton
                                icon.source: "image://theme/icon-m-cancel"
                                visible: parent.visible
                                opacity: inlineQuery.isLoading ? 0.2 : 1
                                Behavior on opacity { FadeAnimation {} }
                                onClicked: {
                                    if(inlineQuery.query !== "") {
                                        newMessageTextField.text = "@" + inlineQuery.userName + " "
                                        newMessageTextField.cursorPosition = newMessageTextField.text.length
                                        lostFocusTimer.start();
                                    } else {
                                        newMessageTextField.text = ""
                                    }
                                }
                                onPressAndHold: {
                                    newMessageTextField.text = ""
                                }
                            }

                            BusyIndicator {
                                size: BusyIndicatorSize.Small
                                anchors.centerIn: parent
                                running: inlineQuery.isLoading
                            }
                        }


                    }
                }
            }
        }


    }


    Loader {
        id: selectedMessagesActions
        asynchronous: true
        anchors.bottom: parent.bottom
        readonly property bool isNeeded: chatPage.isSelecting
        active: height > 0
        width: parent.width
        height: isNeeded ? Theme.itemSizeMedium : 0
        Behavior on height { SmoothedAnimation { duration: 200 } }
        sourceComponent: Component {
            Item {
                clip: true

                IconButton {
                    anchors {
                        left: parent.left
                        leftMargin: Theme.horizontalPageMargin
                        verticalCenter: parent.verticalCenter
                    }
                    icon.source: "image://theme/icon-m-cancel"
                    onClicked: {
                        chatPage.selectedMessages = [];
                    }
                }

                Row {
                    spacing: Theme.paddingSmall
                    anchors {
                        right: parent.right
                        rightMargin: Theme.horizontalPageMargin
                        verticalCenter: parent.verticalCenter
                    }

                    IconButton {
                        icon.source: "../../images/icon-m-copy.svg"
                        icon.sourceSize: Qt.size(Theme.iconSizeMedium, Theme.iconSizeMedium)
                        onClicked: {
                            Clipboard.text = Functions.getMessagesArrayText(chatPage.selectedMessages);
                            appNotification.show(qsTr("%Ln messages have been copied", "", selectedMessages.length));
                            chatPage.selectedMessages = [];
                        }
                    }

                    IconButton {
                        visible: !chatPage.isSecretChat && selectedMessages.every(function(message){
                            return message.can_be_forwarded
                        })
                        icon.sourceSize: Qt.size(Theme.iconSizeMedium, Theme.iconSizeMedium)
                        icon.source: "image://theme/icon-m-forward"
                        onClicked: {
                            startForwardingMessages(chatPage.selectedMessages);
                        }

                    }
                    IconButton {
                        icon.source: "image://theme/icon-m-delete"
                        visible: chatInformation.id === chatPage.myUserId || selectedMessages.every(function(message){
                            return message.can_be_deleted_for_all_users
                        })
                        icon.sourceSize: Qt.size(Theme.iconSizeMedium, Theme.iconSizeMedium)
                        onClicked: {
                            var ids = Functions.getMessagesArrayIds(selectedMessages);
                            var chatId = chatInformation.id
                            var wrapper = tdLibWrapper;
                            Remorse.popupAction(chatPage, qsTr("%Ln Messages deleted", "", ids.length), function() {
                                wrapper.deleteMessages(chatId, ids);
                            });
                            chatPage.selectedMessages = [];
                        }
                    }
                }
            }
        }
    }

    Timer {
        id: doubleTapHintTimer
        running: true
        triggeredOnStart: false
        repeat: false
        interval: 6000
        onTriggered: {
            tapHint.visible = false;
            tapHintLabel.visible = false;
        }
    }

    TapInteractionHint {
        id: tapHint
        loops: Animation.Infinite
        taps: 2
        anchors.centerIn: parent
        visible: false
    }

    InteractionHintLabel {
        id: tapHintLabel
        anchors.bottom: parent.bottom
        text: qsTr("Double-tap on a message to choose a reaction")
        visible: false
    }
}