keanu-weblite/src/components/Chat.vue
2020-11-11 17:35:14 +01:00

338 lines
No EOL
9 KiB
Vue

<template>
<div class="chat-root fill-height d-flex flex-column" ma-0 pa-0>
<div
class="chat-content flex-grow-1 flex-shrink-1"
ref="chatContainer"
style="overflow-x: hidden; overflow-y: auto"
v-on:scroll="onScroll"
>
<div v-for="event in events" :key="event.eventId">
<!-- Contact joined the chat -->
<div
class="messageJoin"
v-if="
event.event.state_key != myUserId &&
event.getContent().membership == 'join' &&
event.getType() == 'm.room.member'
"
>
{{ stateEventDisplayName(event) }} joined the chat
</div>
<!-- Contact left the chat -->
<div
class="messageJoin"
v-if="
event.event.state_key != myUserId &&
event.getContent().membership == 'leave' &&
event.getType() == 'm.room.member'
"
>
{{ stateEventDisplayName(event) }} left the chat
</div>
<!-- Contact invited to the chat -->
<div
class="messageJoin"
v-if="
event.event.state_key != myUserId &&
event.getContent().membership == 'invite' &&
event.getType() == 'm.room.member'
"
>
{{ stateEventDisplayName(event) }} was invited to the chat...
</div>
<div
v-else-if="
event.getSender() != myUserId && event.getType() == 'm.room.message'
"
>
<div class="messageIn">
<div class="sender">{{ messageEventDisplayName(event) }}</div>
<div class="bubble">
<div class="message">{{ event.getContent().body }}</div>
</div>
</div>
<div class="time">
{{ formatTime(event.event.origin_server_ts) }}
</div>
</div>
<div v-else-if="event.getType() == 'm.room.message'">
<div class="messageOut">
<div class="sender">{{ "You" }}</div>
<div class="bubble">
<div class="message">{{ event.getContent().body }}</div>
</div>
<div class="status">{{ event.status }}</div>
</div>
<div class="time">
{{ formatTime(event.event.origin_server_ts) }}
</div>
</div>
<!-- ROOM NAME CHANGED -->
<div v-else-if="event.getType() == 'm.room.name'" class="statusEvent">
{{ stateEventDisplayName(event) }} changed room name to {{ event.getContent().name }}
</div>
<!-- ROOM TOPIC CHANGED -->
<div v-else-if="event.getType() == 'm.room.topic'" class="statusEvent">
{{ stateEventDisplayName(event) }} changed topic to {{ event.getContent().topic }}
</div>
<!-- ROOM AVATAR CHANGED -->
<div v-else-if="event.getType() == 'm.room.avatar'" class="statusEvent">
{{ stateEventDisplayName(event) }} changed the room avatar
</div>
<div v-else class="statusEvent">Event: {{ event.getType() }}
</div>
</div>
<!-- CONTACT IS TYPING -->
<div v-show="contactIsTyping" class="typing">Someone is typing...</div>
</div>
<!-- Input area -->
<div class="input-area flex-grow-0 flex-shrink-0">
<v-textarea
ref="messageInput"
full-width
v-model="currentInput"
no-resize
class="input-message"
placeholder="Send message"
hide-details
></v-textarea>
<div align-self="end" class="text-right">
<v-btn
elevation="0"
@click.stop="sendMessage"
:disabled="sendButtonDisabled"
>Send</v-btn
>
</div>
</div>
</div>
</template>
<script>
import { TimelineWindow, EventTimeline } from "matrix-js-sdk";
// from https://kirbysayshi.com/2013/08/19/maintaining-scroll-position-knockoutjs-list.html
function ScrollPosition(node) {
this.node = node;
this.previousScrollHeightMinusTop = 0;
this.readyFor = "up";
}
ScrollPosition.prototype.restore = function () {
if (this.readyFor === "up") {
this.node.scrollTop =
this.node.scrollHeight - this.previousScrollHeightMinusTop;
}
// 'down' doesn't need to be special cased unless the
// content was flowing upwards, which would only happen
// if the container is position: absolute, bottom: 0 for
// a Facebook messages effect
};
ScrollPosition.prototype.prepareFor = function (direction) {
this.readyFor = direction || "up";
this.previousScrollHeightMinusTop =
this.node.scrollHeight - this.node.scrollTop;
};
export default {
name: "Chat",
data: () => ({
room: null,
events: [],
currentInput: "",
contactIsTyping: false,
timelineWindow: null,
scrollPosition: null,
}),
mounted() {
const container = this.$refs.chatContainer;
this.scrollPosition = new ScrollPosition(container);
this.$matrix.on("Room.timeline", this.onEvent);
this.$matrix.on("RoomMember.typing", this.onUserTyping);
},
destroyed() {
this.$matrix.off("Room.timeline", this.onEvent);
this.$matrix.off("RoomMember.typing", this.onUserTyping);
},
computed: {
myUserId() {
return this.$store.state.auth.user.user_id;
},
roomId() {
return this.$matrix.currentRoomId;
},
sendButtonDisabled() {
return this.currentInput.length == 0;
},
},
watch: {
roomId() {
console.log("Chat: Current room changed");
// Clear old events
this.events = [];
this.timelineWindow = null;
this.contactIsTyping = false;
if (!this.roomId) {
return; // no room
}
this.room = this.$matrix.getRoom(this.roomId);
if (!this.room) {
return; // Not found
}
this.timelineWindow = new TimelineWindow(
this.$matrix.matrixClient,
this.room.getUnfilteredTimelineSet(),
{}
);
this.timelineWindow.load(null, 20).then(() => {
this.events = this.timelineWindow.getEvents();
this.paginateBackIfNeeded();
});
},
},
methods: {
paginateBackIfNeeded() {
this.$nextTick(() => {
const container = this.$refs.chatContainer;
if (container.scrollHeight <= container.clientHeight) {
this.handleScrolledToTop();
}
})
},
onScroll(ignoredevent) {
const container = this.$refs.chatContainer;
if (container.scrollTop == 0) {
// Scrolled to top
this.handleScrolledToTop();
} else if (
container.scrollHeight - container.scrollTop ==
container.clientHeight
) {
this.handleScrolledToBottom();
}
},
onEvent(event) {
if (event.getRoomId() !== this.roomId) {
return; // Not for this room
}
this.paginateBackIfNeeded();
},
onUserTyping(event) {
if (event.getRoomId() !== this.roomId) {
return; // Not for this room
}
console.log("Typing:", event);
},
/**
* Get a display name given an event.
*/
stateEventDisplayName(event) {
if (this.room) {
const member = this.room.getMember(event.getSender());
if (member) {
return member.name;
}
}
return event.getContent().displayname || event.event.state_key;
},
messageEventDisplayName(event) {
return this.stateEventDisplayName(event);
},
sendMessage() {
if (this.currentInput.length > 0) {
this.sendMatrixMessage(this.currentInput);
this.currentInput = "";
}
},
sendMatrixMessage(body) {
var content = {
body: body,
msgtype: "m.text",
};
this.$matrix.matrixClient.sendEvent(
this.roomId,
"m.room.message",
content,
"",
(err, ignoredres) => {
console.log(err);
}
);
},
formatTime(time) {
const date = new Date();
date.setTime(time);
const today = new Date();
if (
date.getDate() == today.getDate() &&
date.getMonth() == today.getMonth() &&
date.getFullYear() == today.getFullYear()
) {
// For today, skip the date part
return date.toLocaleTimeString();
}
return date.toLocaleString();
},
handleScrolledToTop() {
console.log("@top");
// const room = this.$matrix.getRoom(this.roomId);
if (
this.timelineWindow &&
this.timelineWindow.canPaginate(EventTimeline.BACKWARDS)
) {
this.timelineWindow
.paginate(EventTimeline.BACKWARDS, 10, true)
.then((success) => {
if (success) {
this.scrollPosition.prepareFor("up");
this.events = this.timelineWindow.getEvents();
this.$nextTick(() => {
// restore scroll position!
console.log("Restore scroll!");
this.scrollPosition.restore();
});
}
});
}
},
handleScrolledToBottom() {
console.log("@bottom");
},
},
};
</script>
<style lang="scss">
@import "@/assets/css/chat.scss";
</style>