import QtQuick 2.13 import QtQuick.Controls 2.13 import QtQuick.Layouts 1.13 import QtQml.Models 2.13 import QtGraphicalEffects 1.13 import "../../../../shared" import "../../../../imports" import "../components" import "./samples/" import "./MessageComponents" ScrollView { id: root property var messageList: MessagesData {} property bool loadingMessages: false property real scrollY: chatLogView.visibleArea.yPosition * chatLogView.contentHeight property int newMessages: 0 contentItem: chatLogView Layout.fillWidth: true Layout.fillHeight: true ScrollBar.vertical.policy: chatLogView.contentHeight > chatLogView.height ? ScrollBar.AlwaysOn : ScrollBar.AlwaysOff ScrollBar.horizontal.policy: ScrollBar.AlwaysOff ListView { id: chatLogView anchors.fill: parent anchors.bottomMargin: Style.current.bigPadding spacing: 4 boundsBehavior: Flickable.StopAtBounds Layout.fillWidth: true Layout.fillHeight: true Timer { id: timer } Button { readonly property int buttonPadding: 5 id: scrollDownButton visible: false height: 32 width: nbMessages.width + arrowImage.width + 2 * Style.current.halfPadding + (nbMessages.visible ? scrollDownButton.buttonPadding : 0) anchors.bottom: parent.bottom anchors.right: parent.right anchors.rightMargin: Style.current.padding background: Rectangle { color: Style.current.buttonSecondaryColor border.width: 0 radius: 16 } onClicked: { root.newMessages = 0 scrollDownButton.visible = false chatLogView.scrollToBottom(true) } StyledText { id: nbMessages visible: root.newMessages > 0 width: visible ? implicitWidth : 0 text: root.newMessages anchors.verticalCenter: parent.verticalCenter anchors.left: parent.left color: Style.current.pillButtonTextColor font.pixelSize: 15 anchors.leftMargin: Style.current.halfPadding } SVGImage { id: arrowImage width: 24 height: 24 anchors.verticalCenter: parent.verticalCenter anchors.left: nbMessages.right source: "../../../img/leave_chat.svg" anchors.leftMargin: nbMessages.visible ? scrollDownButton.buttonPadding : 0 rotation: -90 ColorOverlay { anchors.fill: parent source: parent color: Style.current.pillButtonTextColor } } MouseArea { cursorShape: Qt.PointingHandCursor anchors.fill: parent onPressed: mouse.accepted = false } } function scrollToBottom(force, caller) { if (!force && !chatLogView.atYEnd) { // User has scrolled up, we don't want to scroll back return false } if (caller && caller !== chatLogView.itemAtIndex(chatLogView.count - 1)) { // If we have a caller, only accept its request if it's the last message return false } // Call this twice and with a timer since the first scroll to bottom might have happened before some stuff loads // meaning that the scroll will not actually be at the bottom on switch // Add a small delay because images, even though they say they say they are loaed, they aren't shown yet Qt.callLater(chatLogView.positionViewAtEnd) timer.setTimeout(function() { Qt.callLater(chatLogView.positionViewAtEnd) }, 100); return true } Connections { target: chatsModel onMessagesLoaded: { loadingMessages = false; } onActiveChannelChanged: { Qt.callLater(chatLogView.scrollToBottom.bind(this, true)) } onSendingMessage: { chatLogView.scrollToBottom(true) } onNewMessagePushed: { if (!chatLogView.scrollToBottom()) { root.newMessages++ } } onAppReady: { chatLogView.scrollToBottom(true) } onMessageNotificationPushed: function(chatId, msg, messageType, chatType, timestamp, identicon, username, hasMention) { if (appSettings.notificationSetting == Constants.notifyAllMessages || (appSettings.notificationSetting == Constants.notifyJustMentions && hasMention)) { notificationWindow.notifyUser(chatId, msg, messageType, chatType, timestamp, identicon, username) } } } property var loadMsgs : Backpressure.oneInTime(chatLogView, 500, function() { if(loadingMessages) return; loadingMessages = true; chatsModel.loadMoreMessages(); }); onContentYChanged: { scrollDownButton.visible = (contentHeight - (scrollY + height) > 400) if(scrollY < 500){ loadMsgs(); } } model: messageListDelegate section.property: "sectionIdentifier" section.criteria: ViewSection.FullString } DelegateModel { id: messageListDelegate property var lessThan: [ function(left, right) { return left.clock < right.clock } ] property int sortOrder: 0 onSortOrderChanged: items.setGroups(0, items.count, "unsorted") function insertPosition(lessThan, item) { var lower = 0 var upper = items.count while (lower < upper) { var middle = Math.floor(lower + (upper - lower) / 2) var result = lessThan(item.model, items.get(middle).model); if (result) { upper = middle } else { lower = middle + 1 } } return lower } function sort(lessThan) { while (unsortedItems.count > 0) { var item = unsortedItems.get(0) var index = insertPosition(lessThan, item) item.groups = "items" items.move(item.itemsIndex, index) } } items.includeByDefault: false groups: DelegateModelGroup { id: unsortedItems name: "unsorted" includeByDefault: true onChanged: { if (messageListDelegate.sortOrder == messageListDelegate.lessThan.length) setGroups(0, count, "items") else { messageListDelegate.sort(messageListDelegate.lessThan[messageListDelegate.sortOrder]) } } } model: messageList delegate: Message { id: msgDelegate fromAuthor: model.fromAuthor chatId: model.chatId userName: model.userName message: model.message plainText: model.plainText identicon: model.identicon isCurrentUser: model.isCurrentUser timestamp: model.timestamp sticker: model.sticker contentType: model.contentType outgoingStatus: model.outgoingStatus responseTo: model.responseTo authorCurrentMsg: msgDelegate.ListView.section authorPrevMsg: msgDelegate.ListView.previousSection imageClick: imagePopup.openPopup.bind(imagePopup) messageId: model.messageId emojiReactions: model.emojiReactions prevMessageIndex: { // This is used in order to have access to the previous message and determine the timestamp // we can't rely on the index because the sequence of messages is not ordered on the nim side if(msgDelegate.DelegateModel.itemsIndex > 0){ return messageListDelegate.items.get(msgDelegate.DelegateModel.itemsIndex - 1).model.index } return -1; } scrollToBottom: chatLogView.scrollToBottom timeout: model.timeout } } } /*##^## Designer { D{i:0;autoSize:true;height:480;width:640} } ##^##*/