1 files changed, 136 insertions, 0 deletions
diff --git a/src/client/views/nodes/LinkDocPreview.tsx b/src/client/views/nodes/LinkDocPreview.tsx
new file mode 100644
index 000000000..ebb916307
--- /dev/null
+++ b/src/client/views/nodes/LinkDocPreview.tsx
@@ -0,0 +1,136 @@
+import { action, computed, observable, runInAction } from 'mobx';
+import { observer } from "mobx-react";
+import wiki from "wikijs";
+import { Doc, DocCastAsync, HeightSym, Opt, WidthSym } from "../../../fields/Doc";
+import { Cast, FieldValue, NumCast } from "../../../fields/Types";
+import { emptyFunction, emptyPath, returnEmptyFilter, returnFalse, returnOne, returnZero } from "../../../Utils";
+import { Docs } from "../../documents/Documents";
+import { DocumentManager } from "../../util/DocumentManager";
+import { Transform } from "../../util/Transform";
+import { ContentFittingDocumentView } from "./ContentFittingDocumentView";
+import React = require("react");
+import { DocumentView } from './DocumentView';
+import { sortAndDeduplicateDiagnostics } from 'typescript';
+import { FontAwesomeIcon } from '@fortawesome/react-fontawesome';
+import { LinkManager } from '../../util/LinkManager';
+import { DocumentLinksButton } from './DocumentLinksButton';
+import { ContextMenu } from '../ContextMenu';
+import { undoBatch } from '../../util/UndoManager';
+
+interface Props {
+    linkDoc?: Doc;
+    linkSrc?: Doc;
+    href?: string;
+    backgroundColor: (doc: Doc) => string;
+    addDocTab: (document: Doc, where: string) => boolean;
+    location: number[];
+}
+@observer
+export class LinkDocPreview extends React.Component<Props> {
+    @observable public static LinkInfo: Opt<{ linkDoc?: Doc; addDocTab: (document: Doc, where: string) => boolean, linkSrc: Doc; href?: string; Location: number[] }>;
+    @observable _targetDoc: Opt<Doc>;
+    @observable _toolTipText = "";
+    _editRef = React.createRef<HTMLDivElement>();
+
+    @action
+    onContextMenu = (e: React.MouseEvent) => {
+        DocumentLinksButton.EditLink = undefined;
+        LinkDocPreview.LinkInfo = undefined;
+        e.preventDefault();
+        ContextMenu.Instance.addItem({ description: "Follow Default Link", event: () => this.followDefault(), icon: "arrow-right" });
+        ContextMenu.Instance.displayMenu(e.clientX, e.clientY);
+    }
+
+    @action.bound
+    async followDefault() {
+        DocumentLinksButton.EditLink = undefined;
+        LinkDocPreview.LinkInfo = undefined;
+        this._targetDoc ? DocumentManager.Instance.FollowLink(this.props.linkDoc, this._targetDoc, doc => this.props.addDocTab(doc, "onRight"), false) : null;
+    }
+
+    componentDidUpdate() { this.updatePreview(); }
+    componentDidMount() { this.updatePreview(); }
+    async updatePreview() {
+        const linkDoc = this.props.linkDoc;
+        const linkSrc = this.props.linkSrc;
+        if (this.props.href) {
+            if (this.props.href.startsWith("https://en.wikipedia.org/wiki/")) {
+                wiki().page(this.props.href.replace("https://en.wikipedia.org/wiki/", "")).then(page => page.summary().then(action(summary => this._toolTipText = summary.substring(0, 500))));
+            } else {
+                runInAction(() => this._toolTipText = "external => " + this.props.href);
+            }
+        } else if (linkDoc && linkSrc) {
+            const anchor = FieldValue(Doc.AreProtosEqual(FieldValue(Cast(linkDoc.anchor1, Doc)), linkSrc) ? Cast(linkDoc.anchor2, Doc) : (Cast(linkDoc.anchor1, Doc)) || linkDoc);
+            const target = anchor?.annotationOn ? await DocCastAsync(anchor.annotationOn) : anchor;
+            runInAction(() => {
+                this._toolTipText = "";
+                this._targetDoc = target;
+                if (anchor !== this._targetDoc && anchor && this._targetDoc) {
+                    this._targetDoc._scrollY = NumCast(anchor?.y);
+                }
+            });
+        }
+    }
+    pointerDown = (e: React.PointerEvent) => {
+        if (this.props.linkDoc && this.props.linkSrc) {
+            DocumentManager.Instance.FollowLink(this.props.linkDoc, this.props.linkSrc,
+                (doc: Doc, followLinkLocation: string) => this.props.addDocTab(doc, e.ctrlKey ? "inTab" : followLinkLocation));
+        } else if (this.props.href) {
+            this.props.addDocTab(Docs.Create.WebDocument(this.props.href, { title: this.props.href, _width: 200, _height: 400, UseCors: true }), "onRight");
+        }
+    }
+    width = () => Math.min(225, NumCast(this._targetDoc?.[WidthSym](), 225));
+    height = () => Math.min(225, NumCast(this._targetDoc?.[HeightSym](), 225));
+    @computed get targetDocView() {
+        return !this._targetDoc ?
+            <div style={{
+                pointerEvents: "all", maxWidth: 225, maxHeight: 225, width: "100%", height: "100%",
+                overflow: "hidden"
+            }}>
+                <div style={{ width: "100%", height: "100%", textOverflow: "ellipsis", }} onPointerDown={this.pointerDown}>
+                    {this._toolTipText}
+                </div>
+            </div> :
+
+            <ContentFittingDocumentView
+                Document={this._targetDoc}
+                LibraryPath={emptyPath}
+                fitToBox={true}
+                moveDocument={returnFalse}
+                rootSelected={returnFalse}
+                ScreenToLocalTransform={Transform.Identity}
+                parentActive={returnFalse}
+                addDocument={returnFalse}
+                removeDocument={returnFalse}
+                addDocTab={returnFalse}
+                pinToPres={returnFalse}
+                dontRegisterView={true}
+                docFilters={returnEmptyFilter}
+                ContainingCollectionDoc={undefined}
+                ContainingCollectionView={undefined}
+                renderDepth={0}
+                PanelWidth={() => this.width() - 16} //Math.min(350, NumCast(target._width, 350))}
+                PanelHeight={() => this.height() - 16} //Math.min(250, NumCast(target._height, 250))}
+                focus={emptyFunction}
+                whenActiveChanged={returnFalse}
+                bringToFront={returnFalse}
+                ContentScaling={returnOne}
+                NativeWidth={returnZero}
+                NativeHeight={returnZero}
+                backgroundColor={this.props.backgroundColor} />;
+    }
+
+    render() {
+        return <div className="linkDocPreview"
+            style={{
+                position: "absolute", left: this.props.location[0],
+                top: this.props.location[1], width: this.width(), height: this.height(),
+                zIndex: 1000,
+                border: "8px solid white", borderRadius: "7px",
+                boxShadow: "3px 3px 1.5px grey",
+                borderBottom: "8px solid white", borderRight: "8px solid white"
+            }}>
+            {this.targetDocView}
+        </div>;
+    }
+}