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import { action, IReactionDisposer, observable, reaction, trace, untracked, computed } from 'mobx';
import { observer } from "mobx-react";
import 'react-image-lightbox/style.css';
import { WidthSym } from "../../../new_fields/Doc";
import { makeInterface } from "../../../new_fields/Schema";
import { Cast, NumCast, BoolCast } from "../../../new_fields/Types";
import { PdfField } from "../../../new_fields/URLField";
//@ts-ignore
// import { Document, Page } from "react-pdf";
// import 'react-pdf/dist/Page/AnnotationLayer.css';
import { RouteStore } from "../../../server/RouteStore";
import { DocComponent } from "../DocComponent";
import { InkingControl } from "../InkingControl";
import { PDFViewer } from "../pdf/PDFViewer";
import { positionSchema } from "./DocumentView";
import { FieldView, FieldViewProps } from './FieldView';
import { pageSchema } from "./ImageBox";
import "./PDFBox.scss";
import React = require("react");
type PdfDocument = makeInterface<[typeof positionSchema, typeof pageSchema]>;
const PdfDocument = makeInterface(positionSchema, pageSchema);
@observer
export class PDFBox extends DocComponent<FieldViewProps, PdfDocument>(PdfDocument) {
public static LayoutString() { return FieldView.LayoutString(PDFBox); }
@observable private _alt = false;
@observable private _scrollY: number = 0;
@computed get dataDoc() { return this.props.DataDoc && BoolCast(this.props.Document.isTemplate) ? this.props.DataDoc : this.props.Document; }
private _reactionDisposer?: IReactionDisposer;
componentDidMount() {
if (this.props.setPdfBox) this.props.setPdfBox(this);
}
public GetPage() {
return Math.floor(NumCast(this.props.Document.scrollY) / NumCast(this.dataDoc.pdfHeight)) + 1;
}
public BackPage() {
let cp = Math.ceil(NumCast(this.props.Document.scrollY) / NumCast(this.dataDoc.pdfHeight)) + 1;
cp = cp - 1;
if (cp > 0) {
this.props.Document.curPage = cp;
this.props.Document.scrollY = (cp - 1) * NumCast(this.dataDoc.pdfHeight);
}
}
public GotoPage(p: number) {
if (p > 0 && p <= NumCast(this.props.Document.numPages)) {
this.props.Document.curPage = p;
this.props.Document.scrollY = (p - 1) * NumCast(this.dataDoc.pdfHeight);
}
}
public ForwardPage() {
let cp = this.GetPage() + 1;
if (cp <= NumCast(this.props.Document.numPages)) {
this.props.Document.curPage = cp;
this.props.Document.scrollY = (cp - 1) * NumCast(this.dataDoc.pdfHeight);
}
}
createRef = (ele: HTMLDivElement | null) => {
if (this._reactionDisposer) this._reactionDisposer();
this._reactionDisposer = reaction(() => this.props.Document.scrollY, () => {
ele && ele.scrollTo({ top: NumCast(this.Document.scrollY), behavior: "auto" });
});
}
loaded = (nw: number, nh: number, np: number) => {
if (this.props.Document) {
let doc = this.dataDoc;
doc.numPages = np;
if (doc.nativeWidth && doc.nativeHeight) return;
let oldaspect = NumCast(doc.nativeHeight) / NumCast(doc.nativeWidth, 1);
doc.nativeWidth = nw;
if (doc.nativeHeight) doc.nativeHeight = nw * oldaspect;
else doc.nativeHeight = nh;
let ccv = this.props.ContainingCollectionView;
if (ccv) {
ccv.props.Document.pdfHeight = nh;
}
doc.height = nh * (doc[WidthSym]() / nw);
}
}
@action
onScroll = (e: React.UIEvent<HTMLDivElement>) => {
if (e.currentTarget) {
this._scrollY = e.currentTarget.scrollTop;
let ccv = this.props.ContainingCollectionView;
if (ccv) {
ccv.props.Document.scrollY = this._scrollY;
}
}
}
render() {
// uses mozilla pdf as default
const pdfUrl = Cast(this.props.Document.data, PdfField);
if (!(pdfUrl instanceof PdfField)) return <div>{`pdf, ${this.props.Document.data}, not found`}</div>;
let classname = "pdfBox-cont" + (this.props.active() && !InkingControl.Instance.selectedTool && !this._alt ? "-interactive" : "");
return (
<div className={classname}
onScroll={this.onScroll}
style={{
marginTop: `${NumCast(this.props.ContainingCollectionView!.props.Document.panY)}px`
}}
ref={this.createRef}
onWheel={(e: React.WheelEvent) => {
e.stopPropagation();
}}>
<PDFViewer url={pdfUrl.url.pathname} loaded={this.loaded} scrollY={this._scrollY} parent={this} />
{/* <div style={{ width: "100px", height: "300px" }}></div> */}
</div>
);
}
}
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