From 3c8cb517c811f94dce1e3d8430e07af316642365 Mon Sep 17 00:00:00 2001
From: sotech117 <michael_foiani@brown.edu>
Date: Thu, 13 Apr 2023 05:39:21 -0400
Subject: Compile and make compatible all the scattered code I had for
 empowering trails for dash meeting. Still much to do with ui, but basic
 functionaltiy is there. Two key things, 1) navigation for branching trails,
 and 2) ability to runSubroutines on tested trails.

---
 src/client/util/BranchingTrailManager.tsx | 113 ++++++++++++++++++++++++++++++
 src/client/util/DocumentManager.ts        |   1 +
 2 files changed, 114 insertions(+)
 create mode 100644 src/client/util/BranchingTrailManager.tsx

(limited to 'src/client/util')

diff --git a/src/client/util/BranchingTrailManager.tsx b/src/client/util/BranchingTrailManager.tsx
new file mode 100644
index 000000000..5a9dd7743
--- /dev/null
+++ b/src/client/util/BranchingTrailManager.tsx
@@ -0,0 +1,113 @@
+import * as React from 'react';
+import { action, observable, computed } from 'mobx';
+import { observer } from 'mobx-react';
+import { Doc } from '../../fields/Doc';
+import { PresBox } from '../views/nodes/trails';
+import { Id } from '../../fields/FieldSymbols';
+import { DocumentManager } from './DocumentManager';
+import { OverlayView } from '../views/OverlayView';
+import { compute } from 'googleapis/build/src/apis/compute';
+
+@observer
+export class BranchingTrailManager extends React.Component {
+    public static Instance: BranchingTrailManager;
+
+    constructor(props: any) {
+        super(props);
+        if (!BranchingTrailManager.Instance) {
+            BranchingTrailManager.Instance = this;
+        }
+    }
+
+    setupUi = () => {
+        OverlayView.Instance.addWindow(<BranchingTrailManager></BranchingTrailManager>, { x: 100, y: 150, width: 1000, title: 'Branching Trail' });
+    };
+
+    // stack of the history
+    @observable private slideHistoryStack: String[] = [];
+    @action setSlideHistoryStack = action((newArr: String[]) => {
+        this.slideHistoryStack = newArr;
+    });
+
+    @observable private containsSet: Set<String> = new Set<String>();
+
+    // prev pres to copmare with
+    @observable private prevPresId: String | null = null;
+    @action setPrevPres = action((newId: String | null) => {
+        this.prevPresId = newId;
+    });
+
+    // docId to Doc map
+    @observable private docIdToDocMap: Map<String, Doc> = new Map<String, Doc>();
+
+    observeDocumentChange = (targetDoc: Doc, pres: PresBox) => {
+        const presId = pres.props.Document[Id];
+        if (this.prevPresId === presId) {
+            return;
+        }
+
+        const targetDocId = targetDoc[Id];
+        this.docIdToDocMap.set(targetDocId, targetDoc);
+
+        if (this.prevPresId === null) {
+            this.setupUi();
+        }
+
+        if (this.prevPresId === null || this.prevPresId !== presId) {
+            this.setPrevPres(presId);
+            // REVERT THE SET
+            const stringified = [presId, targetDocId].toString();
+            if (this.containsSet.has([presId, targetDocId].toString())) {
+                // remove all the elements after the targetDocId
+                const newStack = this.slideHistoryStack.slice(0, this.slideHistoryStack.indexOf(stringified));
+                const removed = this.slideHistoryStack.slice(this.slideHistoryStack.indexOf(stringified));
+                this.setSlideHistoryStack(newStack);
+
+                removed.forEach(info => this.containsSet.delete(info.toString()));
+            } else {
+                this.setSlideHistoryStack([...this.slideHistoryStack, stringified]);
+                this.containsSet.add(stringified);
+            }
+        }
+    };
+
+    clickHandler = (e: React.PointerEventHandler<HTMLButtonElement>, targetDocId: string, removeIndex: number) => {
+        const targetDoc = this.docIdToDocMap.get(targetDocId);
+        if (!targetDoc) {
+            return;
+        }
+        const newStack = this.slideHistoryStack.slice(0, removeIndex);
+        const removed = this.slideHistoryStack.slice(removeIndex);
+        this.setSlideHistoryStack(newStack);
+
+        removed.forEach(info => this.containsSet.delete(info.toString()));
+        DocumentManager.Instance.showDocument(targetDoc, { willZoomCentered: true });
+        //PresBox.NavigateToTarget(targetDoc, targetDoc);
+    };
+
+    @computed get trailBreadcrumbs() {
+        return (
+            <div style={{ border: '.5rem solid green', padding: '5px', backgroundColor: 'white', minHeight: '50px' }}>
+                {this.slideHistoryStack.map((info, index) => {
+                    const [presId, targetDocId] = info.split(',');
+                    const doc = this.docIdToDocMap.get(targetDocId);
+                    if (!doc) {
+                        return <></>;
+                    }
+                    return (
+                        <span key={targetDocId}>
+                            <button key={index} onPointerDown={e => this.clickHandler(e, targetDocId, index)}>
+                                {presId.slice(0, 3) + ':' + doc.title}
+                            </button>
+                            -{'>'}
+                        </span>
+                    );
+                })}
+            </div>
+        );
+    }
+
+    render() {
+        return <div>{BranchingTrailManager.Instance.trailBreadcrumbs}</div>;
+    }
+}
diff --git a/src/client/util/DocumentManager.ts b/src/client/util/DocumentManager.ts
index ccf370662..9cf584bba 100644
--- a/src/client/util/DocumentManager.ts
+++ b/src/client/util/DocumentManager.ts
@@ -19,6 +19,7 @@ import { LinkAnchorBox } from '../views/nodes/LinkAnchorBox';
 import { PresBox } from '../views/nodes/trails';
 import { ScriptingGlobals } from './ScriptingGlobals';
 import { SelectionManager } from './SelectionManager';
+import { BranchingTrailManager } from './BranchingTrailManager';
 const { Howl } = require('howler');
 
 export class DocumentManager {
-- 
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