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shepmastershepmaster
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Extract SimpleEditor to a new file
1 parent 98e5998 commit 693bf9f

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4 files changed

+121
-101
lines changed

4 files changed

+121
-101
lines changed

‎ui/frontend/.eslintrc.js‎

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Original file line numberDiff line numberDiff line change
@@ -60,7 +60,7 @@ module.exports = {
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},
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overrides: [
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{
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files: ['.eslintrc.js', 'websocketMiddleware.ts'],
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files: ['.eslintrc.js', 'editor/SimpleEditor.tsx', 'websocketMiddleware.ts'],
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extends: ['prettier'],
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},
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],

‎ui/frontend/.prettierignore‎

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@@ -11,4 +11,5 @@ node_modules
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# Slowly migrate files that we've touched
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!.eslintrc.js
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!editor/SimpleEditor.tsx
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!websocketMiddleware.ts

‎ui/frontend/editor/Editor.tsx‎

Lines changed: 2 additions & 100 deletions
Original file line numberDiff line numberDiff line change
@@ -5,111 +5,13 @@ import * as actions from '../actions';
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import { useAppDispatch } from '../configureStore';
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import AceEditor from './AceEditor';
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import SimpleEditor from './SimpleEditor';
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import MonacoEditor from './MonacoEditor';
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import { CommonEditorProps, Editor as EditorType, Position, Selection } from '../types';
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import { Editor as EditorType } from '../types';
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import { State } from '../reducers';
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import styles from './Editor.module.css';
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14-
class CodeByteOffsets {
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readonly code: string;
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readonly lines: string[];
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constructor(code: string) {
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this.code = code;
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this.lines = code.split('\n');
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}
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public lineToOffsets(line: number) {
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const precedingBytes = this.bytesBeforeLine(line);
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const highlightedLine = this.lines[line];
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const highlightedBytes = highlightedLine.length;
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return [precedingBytes, precedingBytes + highlightedBytes];
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}
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public rangeToOffsets(start: Position, end: Position) {
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const startBytes = this.positionToBytes(start);
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const endBytes = this.positionToBytes(end);
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return [startBytes, endBytes];
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}
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private positionToBytes(position: Position) {
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// Subtract one as this logic is zero-based and the columns are one-based
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return this.bytesBeforeLine(position.line) + position.column - 1;
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}
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private bytesBeforeLine(line: number) {
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// Subtract one as this logic is zero-based and the lines are one-based
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line -= 1;
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const precedingLines = this.lines.slice(0, line);
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// Add one to account for the newline we split on and removed
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return precedingLines.map(l => l.length + 1).reduce((a, b) => a + b);
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}
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}
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class SimpleEditor extends React.PureComponent<CommonEditorProps> {
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private _editor: HTMLTextAreaElement | null = null;
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private onChange: React.ChangeEventHandler<HTMLTextAreaElement> = e => this.props.onEditCode(e.target.value);
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private trackEditor: React.RefCallback<HTMLTextAreaElement> = component => this._editor = component;
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private onKeyDown: React.KeyboardEventHandler<HTMLTextAreaElement> = e => {
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if (e.key === 'Enter' && (e.ctrlKey || e.metaKey)) {
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this.props.execute();
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}
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}
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public render() {
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return (
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<textarea
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ref={this.trackEditor}
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className={styles.simple}
70-
name="editor-simple"
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autoCapitalize="none"
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autoComplete="off"
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autoCorrect="off"
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spellCheck={false}
75-
value={this.props.code}
76-
onChange={this.onChange}
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onKeyDown={this.onKeyDown} />
78-
);
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}
80-
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public componentDidUpdate(prevProps: CommonEditorProps) {
82-
this.gotoPosition(prevProps.position, this.props.position);
83-
this.setSelection(prevProps.selection, this.props.selection);
84-
}
85-
86-
private gotoPosition(oldPosition: Position, newPosition: Position) {
87-
const editor = this._editor;
88-
89-
if (!newPosition || !editor) { return; }
90-
if (newPosition === oldPosition) { return; }
91-
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const offsets = new CodeByteOffsets(this.props.code);
93-
const [startBytes, endBytes] = offsets.lineToOffsets(newPosition.line);
94-
95-
editor.focus();
96-
editor.setSelectionRange(startBytes, endBytes);
97-
}
98-
99-
private setSelection(oldSelection: Selection, newSelection: Selection) {
100-
const editor = this._editor;
101-
102-
if (!newSelection || !newSelection.start || !newSelection.end || !editor) { return; }
103-
if (newSelection === oldSelection) { return; }
104-
105-
const offsets = new CodeByteOffsets(this.props.code);
106-
const [startBytes, endBytes] = offsets.rangeToOffsets(newSelection.start, newSelection.end);
107-
108-
editor.focus();
109-
editor.setSelectionRange(startBytes, endBytes);
110-
}
111-
}
112-
11315
const editorMap = {
11416
[EditorType.Simple]: SimpleEditor,
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[EditorType.Ace]: AceEditor,

‎ui/frontend/editor/SimpleEditor.tsx‎

Lines changed: 117 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,117 @@
1+
import React from 'react';
2+
3+
import { CommonEditorProps, Position, Selection } from '../types';
4+
5+
import styles from './Editor.module.css';
6+
7+
class CodeByteOffsets {
8+
readonly code: string;
9+
readonly lines: string[];
10+
11+
constructor(code: string) {
12+
this.code = code;
13+
this.lines = code.split('\n');
14+
}
15+
16+
public lineToOffsets(line: number) {
17+
const precedingBytes = this.bytesBeforeLine(line);
18+
19+
const highlightedLine = this.lines[line];
20+
const highlightedBytes = highlightedLine.length;
21+
22+
return [precedingBytes, precedingBytes + highlightedBytes];
23+
}
24+
25+
public rangeToOffsets(start: Position, end: Position) {
26+
const startBytes = this.positionToBytes(start);
27+
const endBytes = this.positionToBytes(end);
28+
return [startBytes, endBytes];
29+
}
30+
31+
private positionToBytes(position: Position) {
32+
// Subtract one as this logic is zero-based and the columns are one-based
33+
return this.bytesBeforeLine(position.line) + position.column - 1;
34+
}
35+
36+
private bytesBeforeLine(line: number) {
37+
// Subtract one as this logic is zero-based and the lines are one-based
38+
line -= 1;
39+
40+
const precedingLines = this.lines.slice(0, line);
41+
42+
// Add one to account for the newline we split on and removed
43+
return precedingLines.map((l) => l.length + 1).reduce((a, b) => a + b);
44+
}
45+
}
46+
47+
class SimpleEditor extends React.PureComponent<CommonEditorProps> {
48+
private _editor: HTMLTextAreaElement | null = null;
49+
50+
private onChange: React.ChangeEventHandler<HTMLTextAreaElement> = (e) =>
51+
this.props.onEditCode(e.target.value);
52+
private trackEditor: React.RefCallback<HTMLTextAreaElement> = (component) =>
53+
(this._editor = component);
54+
private onKeyDown: React.KeyboardEventHandler<HTMLTextAreaElement> = (e) => {
55+
if (e.key === 'Enter' && (e.ctrlKey || e.metaKey)) {
56+
this.props.execute();
57+
}
58+
};
59+
60+
public render() {
61+
return (
62+
<textarea
63+
ref={this.trackEditor}
64+
className={styles.simple}
65+
name="editor-simple"
66+
autoCapitalize="none"
67+
autoComplete="off"
68+
autoCorrect="off"
69+
spellCheck={false}
70+
value={this.props.code}
71+
onChange={this.onChange}
72+
onKeyDown={this.onKeyDown}
73+
/>
74+
);
75+
}
76+
77+
public componentDidUpdate(prevProps: CommonEditorProps) {
78+
this.gotoPosition(prevProps.position, this.props.position);
79+
this.setSelection(prevProps.selection, this.props.selection);
80+
}
81+
82+
private gotoPosition(oldPosition: Position, newPosition: Position) {
83+
const editor = this._editor;
84+
85+
if (!newPosition || !editor) {
86+
return;
87+
}
88+
if (newPosition === oldPosition) {
89+
return;
90+
}
91+
92+
const offsets = new CodeByteOffsets(this.props.code);
93+
const [startBytes, endBytes] = offsets.lineToOffsets(newPosition.line);
94+
95+
editor.focus();
96+
editor.setSelectionRange(startBytes, endBytes);
97+
}
98+
99+
private setSelection(oldSelection: Selection, newSelection: Selection) {
100+
const editor = this._editor;
101+
102+
if (!newSelection || !newSelection.start || !newSelection.end || !editor) {
103+
return;
104+
}
105+
if (newSelection === oldSelection) {
106+
return;
107+
}
108+
109+
const offsets = new CodeByteOffsets(this.props.code);
110+
const [startBytes, endBytes] = offsets.rangeToOffsets(newSelection.start, newSelection.end);
111+
112+
editor.focus();
113+
editor.setSelectionRange(startBytes, endBytes);
114+
}
115+
}
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117+
export default SimpleEditor;

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