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import { observer } from "mobx-react";
import { Doc } from "../../../../fields/Doc";
import { Utils } from '../../../../Utils';
import { DocumentView } from "../../nodes/DocumentView";
import "./CollectionFreeFormLinkView.scss";
import React = require("react");
import v5 = require("uuid/v5");
import { DocumentType } from "../../../documents/DocumentTypes";
import { observable, action, reaction, IReactionDisposer } from "mobx";
import { StrCast, Cast } from "../../../../fields/Types";
import { Id } from "../../../../fields/FieldSymbols";
import { SnappingManager } from "../../../util/SnappingManager";
export interface CollectionFreeFormLinkViewProps {
A: DocumentView;
B: DocumentView;
LinkDocs: Doc[];
}
@observer
export class CollectionFreeFormLinkView extends React.Component<CollectionFreeFormLinkViewProps> {
@observable _opacity: number = 0;
_anchorDisposer: IReactionDisposer | undefined;
@action
componentDidMount() {
this._anchorDisposer = reaction(() => [this.props.A.props.ScreenToLocalTransform(), this.props.B.props.ScreenToLocalTransform(), this.props.A.isSelected() || Doc.IsBrushed(this.props.A.props.Document), this.props.A.isSelected() || Doc.IsBrushed(this.props.A.props.Document)],
action(() => {
if (SnappingManager.GetIsDragging()) return;
setTimeout(action(() => this._opacity = 1), 0); // since the render code depends on querying the Dom through getBoudndingClientRect, we need to delay triggering render()
setTimeout(action(() => (!this.props.LinkDocs.length || !this.props.LinkDocs[0].linkDisplay) && (this._opacity = 0.05)), 750); // this will unhighlight the link line.
const acont = this.props.A.props.Document.type === DocumentType.LINK ? this.props.A.ContentDiv!.getElementsByClassName("linkAnchorBox-cont") : [];
const bcont = this.props.B.props.Document.type === DocumentType.LINK ? this.props.B.ContentDiv!.getElementsByClassName("linkAnchorBox-cont") : [];
const adiv = (acont.length ? acont[0] : this.props.A.ContentDiv!);
const bdiv = (bcont.length ? bcont[0] : this.props.B.ContentDiv!);
const a = adiv.getBoundingClientRect();
const b = bdiv.getBoundingClientRect();
const abounds = adiv.parentElement!.getBoundingClientRect();
const bbounds = bdiv.parentElement!.getBoundingClientRect();
const apt = Utils.closestPtBetweenRectangles(abounds.left, abounds.top, abounds.width, abounds.height,
bbounds.left, bbounds.top, bbounds.width, bbounds.height,
a.left + a.width / 2, a.top + a.height / 2);
const bpt = Utils.closestPtBetweenRectangles(bbounds.left, bbounds.top, bbounds.width, bbounds.height,
abounds.left, abounds.top, abounds.width, abounds.height,
apt.point.x, apt.point.y);
const afield = this.props.A.props.LayoutTemplateString?.indexOf("anchor1") === -1 ? "anchor2" : "anchor1";
const bfield = afield === "anchor1" ? "anchor2" : "anchor1";
// really hacky stuff to make the LinkAnchorBox display where we want it to:
// if there's an element in the DOM with a classname containing the link's id and a targetids attribute containing the other end of the link,
// then that DOM element is a hyperlink source for the current anchor and we want to place our link box at it's top right
// otherwise, we just use the computed nearest point on the document boundary to the target Document
const linkId = this.props.LinkDocs[0][Id]; // this link's Id
const AanchorId = (this.props.LinkDocs[0][afield] as Doc)[Id]; // anchor a's id
const BanchorId = (this.props.LinkDocs[0][bfield] as Doc)[Id]; // anchor b's id
const linkEles = Array.from(window.document.getElementsByClassName(linkId));
const targetAhyperlink = linkEles.find((ele: any) => ele.getAttribute("targetids")?.includes(AanchorId));
const targetBhyperlink = linkEles.find((ele: any) => ele.getAttribute("targetids")?.includes(BanchorId));
if (!targetBhyperlink) {
this.props.A.rootDoc[afield + "_x"] = (apt.point.x - abounds.left) / abounds.width * 100;
this.props.A.rootDoc[afield + "_y"] = (apt.point.y - abounds.top) / abounds.height * 100;
} else {
setTimeout(() => {
(this.props.A.rootDoc[(this.props.A.props as any).fieldKey] as Doc);
const m = targetBhyperlink.getBoundingClientRect();
const mp = this.props.A.props.ScreenToLocalTransform().transformPoint(m.right, m.top + 5);
this.props.A.rootDoc[afield + "_x"] = Math.min(1, mp[0] / this.props.A.props.PanelWidth()) * 100;
this.props.A.rootDoc[afield + "_y"] = Math.min(1, mp[1] / this.props.A.props.PanelHeight()) * 100;
}, 0);
}
if (!targetAhyperlink) {
this.props.A.rootDoc[bfield + "_x"] = (bpt.point.x - bbounds.left) / bbounds.width * 100;
this.props.A.rootDoc[bfield + "_y"] = (bpt.point.y - bbounds.top) / bbounds.height * 100;
} else {
setTimeout(() => {
(this.props.B.rootDoc[(this.props.B.props as any).fieldKey] as Doc);
const m = targetAhyperlink.getBoundingClientRect();
const mp = this.props.B.props.ScreenToLocalTransform().transformPoint(m.right, m.top + 5);
this.props.B.rootDoc[bfield + "_x"] = Math.min(1, mp[0] / this.props.B.props.PanelWidth()) * 100;
this.props.B.rootDoc[bfield + "_y"] = Math.min(1, mp[1] / this.props.B.props.PanelHeight()) * 100;
}, 0);
}
})
, { fireImmediately: true });
}
@action
componentWillUnmount() {
this._anchorDisposer?.();
}
render() {
if (SnappingManager.GetIsDragging()) return null;
this.props.A.props.ScreenToLocalTransform().transform(this.props.B.props.ScreenToLocalTransform());
const acont = this.props.A.ContentDiv!.getElementsByClassName("linkAnchorBox-cont");
const bcont = this.props.B.ContentDiv!.getElementsByClassName("linkAnchorBox-cont");
const a = (acont.length ? acont[0] : this.props.A.ContentDiv!).getBoundingClientRect();
const b = (bcont.length ? bcont[0] : this.props.B.ContentDiv!).getBoundingClientRect();
const apt = Utils.closestPtBetweenRectangles(a.left, a.top, a.width, a.height,
b.left, b.top, b.width, b.height,
a.left + a.width / 2, a.top + a.height / 2);
const bpt = Utils.closestPtBetweenRectangles(b.left, b.top, b.width, b.height,
a.left, a.top, a.width, a.height,
apt.point.x, apt.point.y);
const pt1 = [apt.point.x, apt.point.y];
const pt2 = [bpt.point.x, bpt.point.y];
const pt1vec = [pt1[0] - (a.left + a.width / 2), pt1[1] - (a.top + a.height / 2)];
const pt2vec = [pt2[0] - (b.left + b.width / 2), pt2[1] - (b.top + b.height / 2)];
const pt1len = Math.sqrt((pt1vec[0] * pt1vec[0]) + (pt1vec[1] * pt1vec[1]));
const pt2len = Math.sqrt((pt2vec[0] * pt2vec[0]) + (pt2vec[1] * pt2vec[1]));
const ptlen = Math.sqrt((pt1[0] - pt2[0]) * (pt1[0] - pt2[0]) + (pt1[1] - pt2[1]) * (pt1[1] - pt2[1])) / 3;
const pt1norm = [pt1vec[0] / pt1len * ptlen, pt1vec[1] / pt1len * ptlen];
const pt2norm = [pt2vec[0] / pt2len * ptlen, pt2vec[1] / pt2len * ptlen];
const aActive = this.props.A.isSelected() || Doc.IsBrushed(this.props.A.props.Document);
const bActive = this.props.A.isSelected() || Doc.IsBrushed(this.props.A.props.Document);
const text = StrCast(this.props.A.props.Document.description);
return !a.width || !b.width || ((!this.props.LinkDocs.length || !this.props.LinkDocs[0].linkDisplay) && !aActive && !bActive) ? (null) : (<>
<text x={(Math.min(pt1[0], pt2[0]) * 2 + Math.max(pt1[0], pt2[0])) / 3} y={(pt1[1] + pt2[1]) / 2}>
{text}
</text>
<path className="collectionfreeformlinkview-linkLine" style={{ opacity: this._opacity, strokeDasharray: "2 2" }}
d={`M ${pt1[0]} ${pt1[1]} C ${pt1[0] + pt1norm[0]} ${pt1[1] + pt1norm[1]}, ${pt2[0] + pt2norm[0]} ${pt2[1] + pt2norm[1]}, ${pt2[0]} ${pt2[1]}`} />
</>);
}
}
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