recommender system works

1 files changed, 77 insertions, 24 deletions

diff --git a/src/client/views/collections/collectionFreeForm/CollectionFreeFormLinkView.tsx b/src/client/views/collections/collectionFreeForm/CollectionFreeFormLinkView.tsx
index 837413842..b8fbaef5c 100644
--- a/src/client/views/collections/collectionFreeForm/CollectionFreeFormLinkView.tsx
+++ b/src/client/views/collections/collectionFreeForm/CollectionFreeFormLinkView.tsx
@@ -6,7 +6,9 @@ import "./CollectionFreeFormLinkView.scss";
 import React = require("react");
 import v5 = require("uuid/v5");
 import { DocumentType } from "../../../documents/DocumentTypes";
-import { observable, action } from "mobx";
+import { observable, action, reaction, IReactionDisposer } from "mobx";
+import { StrCast } from "../../../../new_fields/Types";
+import { Id } from "../../../../new_fields/FieldSymbols";
 
 export interface CollectionFreeFormLinkViewProps {
     A: DocumentView;
@@ -16,36 +18,87 @@ export interface CollectionFreeFormLinkViewProps {
 
 @observer
 export class CollectionFreeFormLinkView extends React.Component<CollectionFreeFormLinkViewProps> {
-    @observable _alive: number = 0;
-    @observable _opacity: number = 1;
+    @observable _opacity: number = 0;
+    _anchorDisposer: IReactionDisposer | undefined;
     @action
     componentDidMount() {
-        this._alive = 1;
-        setTimeout(this.rerender, 50);
-        setTimeout(action(() => this._opacity = 0.05), 50);
+        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(() => {
+                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._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("docuLinkBox-cont") : [];
+                const bcont = this.props.B.props.Document.type === DocumentType.LINK ? this.props.B.ContentDiv!.getElementsByClassName("docuLinkBox-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 = StrCast(this.props.A.props.Document[StrCast(this.props.A.props.layoutKey, "layout")]).indexOf("anchor1") === -1 ? "anchor2" : "anchor1";
+                const bfield = afield === "anchor1" ? "anchor2" : "anchor1";
+
+                // really hacky stuff to make the DocuLinkBox display where we want it to:
+                //   if there's an element in the DOM with the id of the opposite anchor, 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 targetAhyperlink = window.document.getElementById((this.props.LinkDocs[0][afield] as Doc)[Id]);
+                const targetBhyperlink = window.document.getElementById((this.props.LinkDocs[0][bfield] as Doc)[Id]);
+                if (!targetBhyperlink) {
+                    this.props.A.props.Document[afield + "_x"] = (apt.point.x - abounds.left) / abounds.width * 100;
+                    this.props.A.props.Document[afield + "_y"] = (apt.point.y - abounds.top) / abounds.height * 100;
+                } else {
+                    setTimeout(() => {
+                        (this.props.A.props.Document[(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.props.Document[afield + "_x"] = mp[0] / this.props.A.props.PanelWidth() * 100;
+                        this.props.A.props.Document[afield + "_y"] = mp[1] / this.props.A.props.PanelHeight() * 100;
+                    }, 0);
+                }
+                if (!targetAhyperlink) {
+                    this.props.A.props.Document[bfield + "_x"] = (bpt.point.x - bbounds.left) / bbounds.width * 100;
+                    this.props.A.props.Document[bfield + "_y"] = (bpt.point.y - bbounds.top) / bbounds.height * 100;
+                } else {
+                    setTimeout(() => {
+                        (this.props.B.props.Document[(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.props.Document[afield + "_x"] = mp[0] / this.props.B.props.PanelWidth() * 100;
+                        this.props.B.props.Document[afield + "_y"] = mp[1] / this.props.B.props.PanelHeight() * 100;
+                    }, 0);
+                }
+            })
+            , { fireImmediately: true });
     }
     @action
     componentWillUnmount() {
-        this._alive = 0;
+        this._anchorDisposer?.();
     }
-    rerender = action(() => {
-        if (this._alive) {
-            setTimeout(this.rerender, 50);
-            this._alive++;
-        }
-    });
 
     render() {
-        let y = this._alive;
-        let acont = this.props.A.props.Document.type === DocumentType.LINK ? this.props.A.ContentDiv!.getElementsByClassName("docuLinkBox-cont") : [];
-        let bcont = this.props.B.props.Document.type === DocumentType.LINK ? this.props.B.ContentDiv!.getElementsByClassName("docuLinkBox-cont") : [];
-        let a = (acont.length ? acont[0] : this.props.A.ContentDiv!).getBoundingClientRect();
-        let b = (bcont.length ? bcont[0] : this.props.B.ContentDiv!).getBoundingClientRect();
-        let pt1 = Utils.getNearestPointInPerimeter(a.left, a.top, a.width, a.height, b.left + b.width / 2, b.top + b.height / 2);
-        let pt2 = Utils.getNearestPointInPerimeter(b.left, b.top, b.width, b.height, a.left + a.width / 2, a.top + a.height / 2);
-        return (<line key="linkLine" className="collectionfreeformlinkview-linkLine"
-            style={{ opacity: this._opacity }}
-            x1={`${pt1[0]}`} y1={`${pt1[1]}`}
-            x2={`${pt2[0]}`} y2={`${pt2[1]}`} />);
+        const acont = this.props.A.props.Document.type === DocumentType.LINK ? this.props.A.ContentDiv!.getElementsByClassName("docuLinkBox-cont") : [];
+        const bcont = this.props.B.props.Document.type === DocumentType.LINK ? this.props.B.ContentDiv!.getElementsByClassName("docuLinkBox-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 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);
+        return !aActive && !bActive ? (null) :
+            <line key="linkLine" className="collectionfreeformlinkview-linkLine"
+                style={{ opacity: this._opacity, strokeDasharray: "2 2" }}
+                x1={`${pt1[0]}`} y1={`${pt1[1]}`}
+                x2={`${pt2[0]}`} y2={`${pt2[1]}`} />;
     }
 }
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