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import { computed } from "mobx";
import { observer } from "mobx-react";
import * as mobxUtils from 'mobx-utils';
import CursorField from "../../../../fields/CursorField";
import { FieldResult } from "../../../../fields/Doc";
import { List } from "../../../../fields/List";
import { listSpec } from "../../../../fields/Schema";
import { Cast } from "../../../../fields/Types";
import { CurrentUserUtils } from "../../../util/CurrentUserUtils";
import { CollectionViewProps } from "../CollectionView";
import "./CollectionFreeFormView.scss";
import React = require("react");
import v5 = require("uuid/v5");
@observer
export class CollectionFreeFormRemoteCursors extends React.Component<CollectionViewProps> {
@computed protected get cursors(): CursorField[] {
const doc = this.props.Document;
let cursors: FieldResult<List<CursorField>>;
const { id } = CurrentUserUtils;
if (!id || !(cursors = Cast(doc.cursors, listSpec(CursorField)))) {
return [];
}
const now = mobxUtils.now();
return (cursors || []).filter(({ data: { metadata } }) => metadata.id !== id && (now - metadata.timestamp) < 1000);
}
@computed get renderedCursors() {
return this.cursors.map(({ data: { metadata, position: { x, y } } }) => {
return (
<div key={metadata.id} className="collectionFreeFormRemoteCursors-cont"
style={{ transform: `translate(${x - 10}px, ${y - 10}px)` }}
>
<canvas className="collectionFreeFormRemoteCursors-canvas"
ref={(el) => {
if (el) {
const ctx = el.getContext('2d');
if (ctx) {
ctx.fillStyle = "#" + v5(metadata.id, v5.URL).substring(0, 6).toUpperCase() + "22";
ctx.fillRect(0, 0, 20, 20);
ctx.fillStyle = "black";
ctx.lineWidth = 0.5;
ctx.beginPath();
ctx.moveTo(10, 0);
ctx.lineTo(10, 8);
ctx.moveTo(10, 20);
ctx.lineTo(10, 12);
ctx.moveTo(0, 10);
ctx.lineTo(8, 10);
ctx.moveTo(20, 10);
ctx.lineTo(12, 10);
ctx.stroke();
}
}
}}
width={20}
height={20}
/>
<p className="collectionFreeFormRemoteCursors-symbol">
{metadata.identifier[0].toUpperCase()}
</p>
</div>
);
});
}
render() {
return this.renderedCursors;
}
}
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