matrixion/resources/qml/MessageView.qml

// SPDX-FileCopyrightText: Nheko Contributors
//
// SPDX-License-Identifier: GPL-3.0-or-later

import "./components"
import "./delegates"
import "./emoji"
import "./ui"
import "./dialogs"
import Qt.labs.platform 1.1 as Platform
import QtQuick 2.15
import QtQuick.Controls 2.15
import QtQuick.Layouts 1.2
import QtQuick.Window 2.13
import im.nheko 1.0

Item {
    id: chatRoot

    property int availableWidth: width
    property int padding: Nheko.paddingMedium
    property string searchString: ""
    property Room roommodel: room

    // HACK: https://bugreports.qt.io/browse/QTBUG-83972, qtwayland cannot auto hide menu
    Connections {
        function onHideMenu() {
            messageContextMenu.close();
            replyContextMenu.close();
        }

        target: MainWindow
    }
    ScrollBar {
        id: scrollbar

        anchors.bottom: parent.bottom
        anchors.right: parent.right
        anchors.top: parent.top
        parent: chat.parent
    }
    ListView {
        id: chat

        property int delegateMaxWidth: ((Settings.timelineMaxWidth > 100 && Settings.timelineMaxWidth < chatRoot.availableWidth) ? Settings.timelineMaxWidth : chatRoot.availableWidth) - chatRoot.padding * 2 - (scrollbar.interactive ? scrollbar.width : 0)
        readonly property alias filteringInProgress: filteredTimeline.filteringInProgress

        ScrollBar.vertical: scrollbar
        anchors.fill: parent
        anchors.rightMargin: scrollbar.interactive ? scrollbar.width : 0
        // reuseItems still has a few bugs, see https://bugreports.qt.io/browse/QTBUG-95105 https://bugreports.qt.io/browse/QTBUG-95107
        //onModelChanged: if (room) room.sendReset()
        //reuseItems: true
        boundsBehavior: Flickable.StopAtBounds
        displayMarginBeginning: height / 2
        displayMarginEnd: height / 2
        model: (filteredTimeline.filterByThread || filteredTimeline.filterByContent) ? filteredTimeline : room
        //pixelAligned: true
        spacing: 2
        verticalLayoutDirection: ListView.BottomToTop

        delegate: EventDelegateChooser {
            id: wrapper
            ListView.delayRemove: true
            width: chat.delegateMaxWidth
            height: Math.max((section.item?.height ?? 0) + gridContainer.implicitHeight, 10)
            anchors.horizontalCenter: ListView.view.contentItem.horizontalCenter
            room: chatRoot.roommodel

            required property var day
            required property bool isSender
            required property bool isStateEvent
            //required property var previousMessageDay
            //required property bool previousMessageIsStateEvent
            //required property string previousMessageUserId
            required property int index
            property var previousMessageDay: (index + 1) >= chat.count ? 0 : chat.model.dataByIndex(index + 1, Room.Day)
            property bool previousMessageIsStateEvent: (index + 1) >= chat.count ? true : chat.model.dataByIndex(index + 1, Room.IsStateEvent)
            property string previousMessageUserId: (index + 1) >= chat.count ? "" : chat.model.dataByIndex(index + 1, Room.UserId)
            required property date timestamp
            required property string userId
            required property string userName
            required property string threadId

            data: [
            Loader {
                id: section

                property var day: wrapper.day
                property bool isSender: wrapper.isSender
                property bool isStateEvent: wrapper.isStateEvent
                property int parentWidth: wrapper.width
                property var previousMessageDay: wrapper.previousMessageDay
                property bool previousMessageIsStateEvent: wrapper.previousMessageIsStateEvent
                property string previousMessageUserId: wrapper.previousMessageUserId
                property date timestamp: wrapper.timestamp
                property string userId: wrapper.userId
                property string userName: wrapper.userName

                active: previousMessageUserId !== userId || previousMessageDay !== day || previousMessageIsStateEvent !== isStateEvent
                //asynchronous: true
                sourceComponent: sectionHeader
                visible: status == Loader.Ready
                z: 4
            }, 
                GridLayout {
                    id: gridContainer

                    width: wrapper.width
                    y: section.visible && section.active ? section.y + section.height : 0

                    ColumnLayout {
                        id: contentColumn
                        Layout.fillWidth: true
                        Layout.leftMargin: (wrapper.isStateEvent || Settings.smallAvatars ? 0 : (Nheko.avatarSize + 8)) + (wrapper.threadId ? 6 : 0) // align bubble with section header

                        AbstractButton {
                            id: replyRow
                            visible: wrapper.reply
                            Layout.fillWidth: true
                            Layout.maximumHeight: timelineView.height / 8
                            Layout.preferredWidth: replyRowLay.implicitWidth
                            Layout.preferredHeight: replyRowLay.implicitHeight

                            property color userColor: TimelineManager.userColor(wrapper.reply?.userId ?? '', palette.base)

                            clip: true

                            contentItem: RowLayout {
                                id: replyRowLay

                                anchors.fill: parent


                                Rectangle {
                                    id: replyLine
                                    Layout.fillHeight: true
                                    color: replyRow.userColor
                                    Layout.preferredWidth: 4
                                }

                                ColumnLayout {
                                    AbstractButton {
                                        id: replyUserButton
                                        Layout.fillWidth: true
                                        contentItem: ElidedLabel {
                                            id: userName_
                                            fullText: wrapper.reply?.userName ?? ''
                                            color: replyRow.userColor
                                            textFormat: Text.RichText
                                            width: parent.width
                                            elideWidth: width
                                        }
                                        onClicked: room.openUserProfile(wrapper.reply?.userId)
                                    }
                                    data: [
                                        replyUserButton,
                                        wrapper.reply,
                                    ]
                                }
                            }

                            background: Rectangle {
                                width: replyRow.implicitContentWidth
                                color: Qt.tint(palette.base, Qt.hsla(replyRow.userColor.hslHue, 0.5, replyRow.userColor.hslLightness, 0.1))
                            }
                        }

                        data: [
                            replyRow, wrapper.main,
                        ]
                    }

                    Rectangle {
                        color: 'yellow'
                        Layout.preferredWidth: 100
                        Layout.preferredHeight: 20
                        Layout.alignment: Qt.AlignRight | Qt.AlignTop
                    }
                },

                Rectangle {
                    width: Math.min(contentColumn.implicitWidth, contentColumn.width)
                    height: contentColumn.implicitHeight
                    color: "blue"
                    opacity: 0.2
                }
            ]

            EventDelegateChoice {
                roleValues: [
                    MtxEvent.TextMessage,
                    MtxEvent.NoticeMessage,
                ]
                TextMessage {
                    id: textMes

                    keepFullText: true
                    required property string userId
                    required property string userName

                    Layout.fillWidth: true
                    //Layout.maximumWidth: implicitWidth

                }
            }

            EventDelegateChoice {
                roleValues: [
                ]
                MatrixText {
                    Layout.fillWidth: true

                    required property string typeString

                    text: "Unsupported: " + typeString

                    required property string userId
                    required property string userName
                }
            }
        }
        footer: Item {
            anchors.horizontalCenter: parent.horizontalCenter
            anchors.margins: Nheko.paddingLarge
            // hacky, but works
            height: loadingSpinner.height + 2 * Nheko.paddingLarge
            visible: (room && room.paginationInProgress) || chat.filteringInProgress

            Spinner {
                id: loadingSpinner

                anchors.centerIn: parent
                anchors.margins: Nheko.paddingLarge
                foreground: palette.mid
                running: (room && room.paginationInProgress) || chat.filteringInProgress
                z: 3
            }
        }

        Window.onActiveChanged: readTimer.running = Window.active
        onCountChanged: {
            // Mark timeline as read
            if (atYEnd && room)
                model.currentIndex = 0;
        }

        TimelineFilter {
            id: filteredTimeline

            filterByContent: chatRoot.searchString
            filterByThread: room ? room.thread : ""
            source: room
        }
        Control {
            id: messageActions

            property Item attached: null
            // use comma to update on scroll
            property var attachedPos: chat.contentY, attached ? chat.mapFromItem(attached, attached ? attached.width - width : 0, -height) : null
            property alias model: row.model

            hoverEnabled: true
            padding: Nheko.paddingSmall
            visible: Settings.buttonsInTimeline && !!attached && (attached.hovered || hovered)
            x: attached ? attachedPos.x : 0
            y: attached ? attachedPos.y + Nheko.paddingSmall : 0
            z: 10

            background: Rectangle {
                border.color: palette.buttonText
                border.width: 1
                color: palette.window
                radius: padding
            }
            contentItem: RowLayout {
                id: row

                property var model

                spacing: messageActions.padding

                Repeater {
                    model: Settings.recentReactions
                    visible: room ? room.permissions.canSend(MtxEvent.Reaction) : false

                    delegate: AbstractButton {
                        id: button

                        property color buttonTextColor: palette.buttonText
                        property color highlightColor: palette.highlight
                        required property string modelData
                        property bool showImage: modelData.startsWith("mxc://")

                        //Layout.preferredHeight: fontMetrics.height
                        Layout.alignment: Qt.AlignBottom
                        focusPolicy: Qt.NoFocus
                        height: showImage ? 16 : buttonText.implicitHeight
                        implicitHeight: showImage ? 16 : buttonText.implicitHeight
                        implicitWidth: showImage ? 16 : buttonText.implicitWidth
                        width: showImage ? 16 : buttonText.implicitWidth

                        onClicked: {
                            room.input.reaction(row.model.eventId, modelData);
                            TimelineManager.focusMessageInput();
                        }

                        Label {
                            id: buttonText

                            anchors.centerIn: parent
                            color: button.hovered ? button.highlightColor : button.buttonTextColor
                            font.family: Settings.emojiFont
                            horizontalAlignment: Text.AlignHCenter
                            padding: 0
                            text: button.modelData
                            verticalAlignment: Text.AlignVCenter
                            visible: !button.showImage
                        }
                        Image {
                            id: buttonImg

                            // Workaround, can't get icon.source working for now...
                            anchors.fill: parent
                            fillMode: Image.PreserveAspectFit
                            source: button.showImage ? (button.modelData.replace("mxc://", "image://MxcImage/") + "?scale") : ""
                            sourceSize.height: button.height
                            sourceSize.width: button.width
                        }
                        NhekoCursorShape {
                            anchors.fill: parent
                            cursorShape: Qt.PointingHandCursor
                        }
                        Ripple {
                            color: Qt.rgba(buttonTextColor.r, buttonTextColor.g, buttonTextColor.b, 0.5)
                        }
                    }
                }
                ImageButton {
                    ToolTip.delay: Nheko.tooltipDelay
                    ToolTip.text: qsTr("Edit")
                    ToolTip.visible: hovered
                    buttonTextColor: palette.buttonText
                    hoverEnabled: true
                    image: ":/icons/icons/ui/edit.svg"
                    visible: !!row.model && row.model.isEditable
                    width: 16

                    onClicked: {
                        if (row.model.isEditable)
                            room.edit = row.model.eventId;
                    }
                }
                ImageButton {
                    id: reactButton

                    ToolTip.delay: Nheko.tooltipDelay
                    ToolTip.text: qsTr("React")
                    ToolTip.visible: hovered
                    hoverEnabled: true
                    image: ":/icons/icons/ui/smile-add.svg"
                    visible: room ? room.permissions.canSend(MtxEvent.Reaction) : false
                    width: 16

                    onClicked: emojiPopup.visible ? emojiPopup.close() : emojiPopup.show(reactButton, room.roomId, function (plaintext, markdown) {
                            var event_id = row.model ? row.model.eventId : "";
                            room.input.reaction(event_id, plaintext);
                            TimelineManager.focusMessageInput();
                        })
                }
                ImageButton {
                    ToolTip.delay: Nheko.tooltipDelay
                    ToolTip.text: (row.model && row.model.threadId) ? qsTr("Reply in thread") : qsTr("New thread")
                    ToolTip.visible: hovered
                    hoverEnabled: true
                    image: (row.model && row.model.threadId) ? ":/icons/icons/ui/thread.svg" : ":/icons/icons/ui/new-thread.svg"
                    visible: room ? room.permissions.canSend(MtxEvent.TextMessage) : false
                    width: 16

                    onClicked: room.thread = (row.model.threadId || row.model.eventId)
                }
                ImageButton {
                    ToolTip.delay: Nheko.tooltipDelay
                    ToolTip.text: qsTr("Reply")
                    ToolTip.visible: hovered
                    hoverEnabled: true
                    image: ":/icons/icons/ui/reply.svg"
                    visible: room ? room.permissions.canSend(MtxEvent.TextMessage) : false
                    width: 16

                    onClicked: room.reply = row.model.eventId
                }
                ImageButton {
                    ToolTip.delay: Nheko.tooltipDelay
                    ToolTip.text: qsTr("Go to message")
                    ToolTip.visible: hovered
                    buttonTextColor: palette.buttonText
                    hoverEnabled: true
                    image: ":/icons/icons/ui/go-to.svg"
                    visible: !!row.model && filteredTimeline.filterByContent
                    width: 16

                    onClicked: {
                        topBar.searchString = "";
                        room.showEvent(row.model.eventId);
                    }
                }
                ImageButton {
                    id: optionsButton

                    ToolTip.delay: Nheko.tooltipDelay
                    ToolTip.text: qsTr("Options")
                    ToolTip.visible: hovered
                    hoverEnabled: true
                    image: ":/icons/icons/ui/options.svg"
                    width: 16

                    onClicked: messageContextMenu.show(row.model.eventId, row.model.threadId, row.model.type, row.model.isSender, row.model.isEncrypted, row.model.isEditable, "", row.model.body, optionsButton)
                }
            }
        }
        Shortcut {
            sequence: StandardKey.MoveToPreviousPage

            onActivated: {
                chat.contentY = chat.contentY - chat.height * 0.9;
                chat.returnToBounds();
            }
        }
        Shortcut {
            sequence: StandardKey.MoveToNextPage

            onActivated: {
                chat.contentY = chat.contentY + chat.height * 0.9;
                chat.returnToBounds();
            }
        }
        Shortcut {
            sequence: StandardKey.Cancel

            onActivated: {
                if (room.input.uploads.length > 0)
                    room.input.declineUploads();
                else if (room.reply)
                    room.reply = undefined;
                else if (room.edit)
                    room.edit = undefined;
                else
                    room.thread = undefined;
                TimelineManager.focusMessageInput();
            }
        }

        // These shortcuts use the room timeline because switching to threads and out is annoying otherwise.
        // Better solution welcome.
        Shortcut {
            sequence: "Alt+Up"

            onActivated: room.reply = room.indexToId(room.reply ? room.idToIndex(room.reply) + 1 : 0)
        }
        Shortcut {
            sequence: "Alt+Down"

            onActivated: {
                var idx = room.reply ? room.idToIndex(room.reply) - 1 : -1;
                room.reply = idx >= 0 ? room.indexToId(idx) : null;
            }
        }
        Shortcut {
            sequence: "Alt+F"

            onActivated: {
                if (room.reply) {
                    var forwardMess = forwardCompleterComponent.createObject(timelineRoot);
                    forwardMess.setMessageEventId(room.reply);
                    forwardMess.open();
                    room.reply = null;
                    timelineRoot.destroyOnClose(forwardMess);
                }
            }
        }
        Shortcut {
            sequence: "Ctrl+E"

            onActivated: {
                room.edit = room.reply;
            }
        }
        Timer {
            id: readTimer

            interval: 1000

            // force current read index to update
            onTriggered: {
                if (room)
                    room.setCurrentIndex(room.currentIndex);
            }
        }
        Component {
            id: sectionHeader

            Column {
                bottomPadding: Settings.bubbles ? (isSender && previousMessageDay == day ? 0 : 2) : 3
                spacing: 8
                topPadding: userName_.visible ? 4 : 0
                visible: (previousMessageUserId !== userId || previousMessageDay !== day || isStateEvent !== previousMessageIsStateEvent)
                width: parentWidth

                Label {
                    id: dateBubble

                    anchors.horizontalCenter: parent ? parent.horizontalCenter : undefined
                    color: palette.text
                    height: Math.round(fontMetrics.height * 1.4)
                    horizontalAlignment: Text.AlignHCenter
                    text: room ? room.formatDateSeparator(timestamp) : ""
                    verticalAlignment: Text.AlignVCenter
                    visible: room && previousMessageDay !== day
                    width: contentWidth * 1.2

                    background: Rectangle {
                        color: palette.window
                        radius: parent.height / 2
                    }
                }
                Row {
                    id: userInfo

                    property int remainingWidth: chat.delegateMaxWidth - spacing - messageUserAvatar.width

                    height: userName_.height
                    spacing: 8
                    visible: !isStateEvent && (!isSender || !Settings.bubbles)

                    Avatar {
                        id: messageUserAvatar

                        ToolTip.delay: Nheko.tooltipDelay
                        ToolTip.text: userid
                        ToolTip.visible: messageUserAvatar.hovered
                        displayName: userName
                        height: Nheko.avatarSize * (Settings.smallAvatars ? 0.5 : 1)
                        url: !room ? "" : room.avatarUrl(userId).replace("mxc://", "image://MxcImage/")
                        userid: userId
                        width: Nheko.avatarSize * (Settings.smallAvatars ? 0.5 : 1)

                        onClicked: room.openUserProfile(userId)
                    }
                    Connections {
                        function onRoomAvatarUrlChanged() {
                            messageUserAvatar.url = room.avatarUrl(userId).replace("mxc://", "image://MxcImage/");
                        }
                        function onScrollToIndex(index) {
                            chat.positionViewAtIndex(index, ListView.Center);
                        }

                        target: room
                    }

                    AbstractButton {
                        id: userNameButton

                        PowerlevelIndicator {
                            id: powerlevelIndicator
                            anchors.left: parent.left
                            //anchors.horizontalCenter: parent.horizontalCenter

                            powerlevel: userPowerlevel
                            permissions: room ? room.permissions : null
                            visible: isAdmin || isModerator
                        }

                        ToolTip.delay: Nheko.tooltipDelay
                        ToolTip.text: userId
                        ToolTip.visible: hovered
                        leftPadding: powerlevelIndicator.visible ? 16 : 0
                        leftInset: 0
                        rightInset: 0
                        rightPadding: 0

                        contentItem: Label {
                            id: userName_

                            color: TimelineManager.userColor(userId, palette.base)
                            text: TimelineManager.escapeEmoji(userNameTextMetrics.elidedText)
                            textFormat: Text.RichText
                        }

                        onClicked: room.openUserProfile(userId)

                        TextMetrics {
                            id: userNameTextMetrics

                            elide: Text.ElideRight
                            elideWidth: userInfo.remainingWidth - Math.min(statusMsg.implicitWidth, userInfo.remainingWidth / 3)
                            text: userName
                        }
                        NhekoCursorShape {
                            anchors.fill: parent
                            cursorShape: Qt.PointingHandCursor
                        }
                    }
                    Label {
                        id: statusMsg

                        property string userStatus: Presence.userStatus(userId)

                        ToolTip.delay: Nheko.tooltipDelay
                        ToolTip.text: qsTr("%1's status message").arg(userName)
                        ToolTip.visible: statusMsgHoverHandler.hovered
                        anchors.baseline: userNameButton.baseline
                        color: palette.buttonText
                        elide: Text.ElideRight
                        font.italic: true
                        font.pointSize: Math.floor(fontMetrics.font.pointSize * 0.8)
                        text: userStatus.replace(/\n/g, " ")
                        textFormat: Text.PlainText
                        width: Math.min(implicitWidth, userInfo.remainingWidth - userName_.width - parent.spacing)

                        HoverHandler {
                            id: statusMsgHoverHandler

                        }
                        Connections {
                            function onPresenceChanged(id) {
                                if (id == userId)
                                    statusMsg.userStatus = Presence.userStatus(userId);
                            }

                            target: Presence
                        }
                    }
                }
            }
        }
    }
    Platform.Menu {
        id: messageContextMenu

        property string eventId
        property int eventType
        property bool isEditable
        property bool isEncrypted
        property bool isSender
        property string link
        property string text
        property string threadId

        function show(eventId_, threadId_, eventType_, isSender_, isEncrypted_, isEditable_, link_, text_, showAt_) {
            eventId = eventId_;
            threadId = threadId_;
            eventType = eventType_;
            isEncrypted = isEncrypted_;
            isEditable = isEditable_;
            isSender = isSender_;
            if (text_)
                text = text_;
            else
                text = "";
            if (link_)
                link = link_;
            else
                link = "";
            if (showAt_)
                open(showAt_);
            else
                open();
        }

        Component {
            id: removeReason

            InputDialog {
                id: removeReasonDialog

                property string eventId

                prompt: qsTr("Enter reason for removal or hit enter for no reason:")
                title: qsTr("Reason for removal")

                onAccepted: function (text) {
                    room.redactEvent(eventId, text);
                }
            }
        }
        Platform.MenuItem {
            enabled: visible
            text: qsTr("Go to &message")
            visible: filteredTimeline.filterByContent

            onTriggered: function () {
                topBar.searchString = "";
                room.showEvent(messageContextMenu.eventId);
            }
        }
        Platform.MenuItem {
            enabled: visible
            text: qsTr("&Copy")
            visible: messageContextMenu.text

            onTriggered: Clipboard.text = messageContextMenu.text
        }
        Platform.MenuItem {
            enabled: visible
            text: qsTr("Copy &link location")
            visible: messageContextMenu.link

            onTriggered: Clipboard.text = messageContextMenu.link
        }
        Platform.MenuItem {
            id: reactionOption

            text: qsTr("Re&act")
            visible: room ? room.permissions.canSend(MtxEvent.Reaction) : false

            onTriggered: emojiPopup.visible ? emojiPopup.close() : emojiPopup.show(null, room.roomId, function (plaintext, markdown) {
                    room.input.reaction(messageContextMenu.eventId, plaintext);
                    TimelineManager.focusMessageInput();
                })
        }
        Platform.MenuItem {
            text: qsTr("Repl&y")
            visible: room ? room.permissions.canSend(MtxEvent.TextMessage) : false

            onTriggered: room.reply = (messageContextMenu.eventId)
        }
        Platform.MenuItem {
            enabled: visible
            text: qsTr("&Edit")
            visible: messageContextMenu.isEditable && (room ? room.permissions.canSend(MtxEvent.TextMessage) : false)

            onTriggered: room.edit = (messageContextMenu.eventId)
        }
        Platform.MenuItem {
            enabled: visible
            text: qsTr("&Thread")
            visible: (room ? room.permissions.canSend(MtxEvent.TextMessage) : false)

            onTriggered: room.thread = (messageContextMenu.threadId || messageContextMenu.eventId)
        }
        Platform.MenuItem {
            enabled: visible
            text: visible && room.pinnedMessages.includes(messageContextMenu.eventId) ? qsTr("Un&pin") : qsTr("&Pin")
            visible: (room ? room.permissions.canChange(MtxEvent.PinnedEvents) : false)

            onTriggered: visible && room.pinnedMessages.includes(messageContextMenu.eventId) ? room.unpin(messageContextMenu.eventId) : room.pin(messageContextMenu.eventId)
        }
        Platform.MenuItem {
            text: qsTr("&Read receipts")

            onTriggered: room.showReadReceipts(messageContextMenu.eventId)
        }
        Platform.MenuItem {
            text: qsTr("&Forward")
            visible: messageContextMenu.eventType == MtxEvent.ImageMessage || messageContextMenu.eventType == MtxEvent.VideoMessage || messageContextMenu.eventType == MtxEvent.AudioMessage || messageContextMenu.eventType == MtxEvent.FileMessage || messageContextMenu.eventType == MtxEvent.Sticker || messageContextMenu.eventType == MtxEvent.TextMessage || messageContextMenu.eventType == MtxEvent.LocationMessage || messageContextMenu.eventType == MtxEvent.EmoteMessage || messageContextMenu.eventType == MtxEvent.NoticeMessage

            onTriggered: {
                var forwardMess = forwardCompleterComponent.createObject(timelineRoot);
                forwardMess.setMessageEventId(messageContextMenu.eventId);
                forwardMess.open();
                timelineRoot.destroyOnClose(forwardMess);
            }
        }
        Platform.MenuItem {
            text: qsTr("&Mark as read")
        }
        Platform.MenuItem {
            text: qsTr("View raw message")

            onTriggered: room.viewRawMessage(messageContextMenu.eventId)
        }
        Platform.MenuItem {
            enabled: visible
            text: qsTr("View decrypted raw message")
            // TODO(Nico): Fix this still being iterated over, when using keyboard to select options
            visible: messageContextMenu.isEncrypted

            onTriggered: room.viewDecryptedRawMessage(messageContextMenu.eventId)
        }
        Platform.MenuItem {
            text: qsTr("Remo&ve message")
            visible: (room ? room.permissions.canRedact() : false) || messageContextMenu.isSender

            onTriggered: function () {
                var dialog = removeReason.createObject(timelineRoot);
                dialog.eventId = messageContextMenu.eventId;
                dialog.show();
                dialog.forceActiveFocus();
                timelineRoot.destroyOnClose(dialog);
            }
        }
        Platform.MenuItem {
            enabled: visible
            text: qsTr("&Save as")
            visible: messageContextMenu.eventType == MtxEvent.ImageMessage || messageContextMenu.eventType == MtxEvent.VideoMessage || messageContextMenu.eventType == MtxEvent.AudioMessage || messageContextMenu.eventType == MtxEvent.FileMessage || messageContextMenu.eventType == MtxEvent.Sticker

            onTriggered: room.saveMedia(messageContextMenu.eventId)
        }
        Platform.MenuItem {
            enabled: visible
            text: qsTr("&Open in external program")
            visible: messageContextMenu.eventType == MtxEvent.ImageMessage || messageContextMenu.eventType == MtxEvent.VideoMessage || messageContextMenu.eventType == MtxEvent.AudioMessage || messageContextMenu.eventType == MtxEvent.FileMessage || messageContextMenu.eventType == MtxEvent.Sticker

            onTriggered: room.openMedia(messageContextMenu.eventId)
        }
        Platform.MenuItem {
            enabled: visible
            text: qsTr("Copy link to eve&nt")
            visible: messageContextMenu.eventId

            onTriggered: room.copyLinkToEvent(messageContextMenu.eventId)
        }
    }
    Component {
        id: forwardCompleterComponent

        ForwardCompleter {
        }
    }
    Platform.Menu {
        id: replyContextMenu

        property string eventId
        property string link
        property string text

        function show(text_, link_, eventId_) {
            text = text_;
            link = link_;
            eventId = eventId_;
            open();
        }

        Platform.MenuItem {
            enabled: visible
            text: qsTr("&Copy")
            visible: replyContextMenu.text

            onTriggered: Clipboard.text = replyContextMenu.text
        }
        Platform.MenuItem {
            enabled: visible
            text: qsTr("Copy &link location")
            visible: replyContextMenu.link

            onTriggered: Clipboard.text = replyContextMenu.link
        }
        Platform.MenuItem {
            enabled: visible
            text: qsTr("&Go to quoted message")
            visible: true

            onTriggered: room.showEvent(replyContextMenu.eventId)
        }
    }
    RoundButton {
        id: toEndButton

        property int fullWidth: 40

        flat: true
        height: width
        hoverEnabled: true
        radius: width / 2
        width: 0

        background: Rectangle {
            border.color: toEndButton.hovered ? palette.highlight : palette.buttonText
            border.width: 1
            color: toEndButton.down ? palette.highlight : palette.button
            opacity: enabled ? 1 : 0.3
            radius: toEndButton.radius
        }
        states: [
            State {
                name: ""

                PropertyChanges {
                    target: toEndButton
                    width: 0
                }
            },
            State {
                name: "shown"
                when: !chat.atYEnd

                PropertyChanges {
                    target: toEndButton
                    width: toEndButton.fullWidth
                }
            }
        ]
        transitions: Transition {
            from: ""
            reversible: true
            to: "shown"

            SequentialAnimation {
                PauseAnimation {
                    duration: 500
                }
                PropertyAnimation {
                    duration: 200
                    easing.type: Easing.InOutQuad
                    properties: "width"
                    target: toEndButton
                }
            }
        }

        onClicked: function () {
            chat.positionViewAtBeginning();
            TimelineManager.focusMessageInput();
        }

        anchors {
            bottom: parent.bottom
            bottomMargin: Nheko.paddingMedium + (fullWidth - width) / 2
            right: scrollbar.left
            rightMargin: Nheko.paddingMedium + (fullWidth - width) / 2
        }
        Image {
            id: buttonImg

            anchors.fill: parent
            anchors.margins: Nheko.paddingMedium
            fillMode: Image.PreserveAspectFit
            source: "image://colorimage/:/icons/icons/ui/download.svg?" + (toEndButton.down ? palette.highlightedText : palette.buttonText)
        }
    }
}