From faf9dc5ca6a7380f3b040dc2ddbe07c29689e014 Mon Sep 17 00:00:00 2001
From: bobzel <zzzman@gmail.com>
Date: Tue, 2 Mar 2021 12:39:58 -0500
Subject: some cleanup and extensions to Equationbox stuff.  can sort of be
 nested in text docs with ctrl-m.

---
 .../views/nodes/formattedText/EquationView.tsx     | 75 ++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 src/client/views/nodes/formattedText/EquationView.tsx

(limited to 'src/client/views/nodes/formattedText/EquationView.tsx')

diff --git a/src/client/views/nodes/formattedText/EquationView.tsx b/src/client/views/nodes/formattedText/EquationView.tsx
new file mode 100644
index 000000000..eff018635
--- /dev/null
+++ b/src/client/views/nodes/formattedText/EquationView.tsx
@@ -0,0 +1,75 @@
+import EquationEditor from "equation-editor-react";
+import { IReactionDisposer } from "mobx";
+import { observer } from "mobx-react";
+import * as ReactDOM from 'react-dom';
+import { Doc } from "../../../../fields/Doc";
+import { StrCast } from "../../../../fields/Types";
+import "./DashFieldView.scss";
+import { FormattedTextBox } from "./FormattedTextBox";
+import React = require("react");
+
+export class EquationView {
+    _fieldWrapper: HTMLDivElement; // container for label and value
+
+    constructor(node: any, view: any, getPos: any, tbox: FormattedTextBox) {
+        this._fieldWrapper = document.createElement("div");
+        this._fieldWrapper.style.width = node.attrs.width;
+        this._fieldWrapper.style.height = node.attrs.height;
+        this._fieldWrapper.style.fontWeight = "bold";
+        this._fieldWrapper.style.position = "relative";
+        this._fieldWrapper.style.display = "inline-block";
+        this._fieldWrapper.onkeypress = function (e: any) { e.stopPropagation(); };
+        this._fieldWrapper.onkeydown = function (e: any) { e.stopPropagation(); };
+        this._fieldWrapper.onkeyup = function (e: any) { e.stopPropagation(); };
+        this._fieldWrapper.onmousedown = function (e: any) { e.stopPropagation(); };
+
+        ReactDOM.render(<EquationViewInternal
+            fieldKey={node.attrs.fieldKey}
+            width={node.attrs.width}
+            height={node.attrs.height}
+            tbox={tbox}
+        />, this._fieldWrapper);
+        (this as any).dom = this._fieldWrapper;
+    }
+    destroy() { ReactDOM.unmountComponentAtNode(this._fieldWrapper); }
+    selectNode() { }
+}
+
+interface IEquationViewInternal {
+    fieldKey: string;
+    tbox: FormattedTextBox;
+    width: number;
+    height: number;
+}
+
+@observer
+export class EquationViewInternal extends React.Component<IEquationViewInternal> {
+    _reactionDisposer: IReactionDisposer | undefined;
+    _textBoxDoc: Doc;
+    _fieldKey: string;
+
+    constructor(props: IEquationViewInternal) {
+        super(props);
+        this._fieldKey = this.props.fieldKey;
+        this._textBoxDoc = this.props.tbox.props.Document;
+    }
+
+    componentWillUnmount() { this._reactionDisposer?.(); }
+
+    render() {
+        return <div className="equationView" style={{
+            position: "relative",
+            display: "inline-block",
+            width: this.props.width,
+            height: this.props.height,
+        }}>
+            <EquationEditor
+                value={StrCast(this._textBoxDoc[this._fieldKey], "y=")}
+                onChange={str => this._textBoxDoc[this._fieldKey] = str}
+                autoCommands="pi theta sqrt sum prod alpha beta gamma rho"
+                autoOperatorNames="sin cos tan"
+                spaceBehavesLikeTab={true}
+            />
+        </div >;
+    }
+}
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