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import DeltaChat 1.0
import QtQml.Models 2.1
import QtQuick 2.12
import QtQuick.Controls 2.12
import QtQuick.Layouts 1.12
import org.kde.kirigami 2.12 as Kirigami
Kirigami.ScrollablePage {
id: root
required property DcContext context
required property DcAccountsEventEmitter eventEmitter
required property var chatId
property DcChat chat: context.getChat(chatId)
function updateMessagelist() {
// Reverse message list, because it is laid out from bottom to top.
let messagelist = context.getMsgIdList(chatId).reverse();
for (let i = 0; i < messagelist.length; i++) {
const msgId = messagelist[i];
const item = {
"msgId": msgId
};
let j;
for (j = i; j < messagelistModel.count; j++) {
if (messagelistModel.get(j).msgId == msgId) {
messagelistModel.move(j, i, 1);
messagelistModel.set(i, item);
break;
}
}
if (j == messagelistModel.count)
messagelistModel.insert(i, item);
}
if (messagelistModel.count > messagelist.length)
messagelistModel.remove(messagelist.length, messagelistModel.count - messagelist.length);
}
title: chat ? chat.name : qsTr("Chat")
Component.onCompleted: {
root.updateMessagelist();
}
ListModel {
id: messagelistModel
}
Connections {
function onChatModified() {
console.log("CHAT MODIFIED!");
root.chat = context.getChat(chatId);
}
function onIncomingMessage(accountId, chatId, msgId) {
updateMessagelist();
console.log("Incoming message for chat " + chatId);
}
function onMessagesChanged(accountId, chatId, msgId) {
console.log("Messages changed for chat " + chatId);
if (chatId == root.chatId || chatId == 0)
root.updateMessagelist();
}
target: root.eventEmitter
}
ListView {
id: messageListView
anchors.fill: parent
spacing: Kirigami.Units.largeSpacing
model: messagelistModel
/*
* Messages are laid out bottom to top, because their height
* is not known in advance.
*
* Attempts to lay out messages top to bottom and scroll to the
* bottom of the list with ListView.positionViewAtEnd() result in
* imprecise scrollbar position, because this method estimates
* item height from the height of currently visible messages.
*/
verticalLayoutDirection: ListView.BottomToTop
ScrollBar.vertical: ScrollBar {
wheelEnabled: true
hoverEnabled: true
background: Rectangle {
opacity: hovered ? 1 : 0.0
}
}
delegate: Message {
message: root.context.getMessage(msgId)
context: root.context
width: ListView.view.width
}
}
background: Rectangle {
color: Kirigami.Theme.alternateBackgroundColor
anchors.fill: parent
}
footer: ComposePane {
context: root.context
chatId: root.chatId
chat: root.chat
Layout.fillWidth: true
}
}
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