592 lines
18 KiB
Vue
592 lines
18 KiB
Vue
<template>
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<div
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class="mrmth-editor"
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data-mrmth-script-widget="vue"
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ref="wrapperRef"
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:style="editorStyle"
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>
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<!-- Gutter / Line Numbers -->
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<div class="mrmth-gutter">
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<div
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ref="gutterContentRef"
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class="mrmth-gutter-content"
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:style="gutterStyle"
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>
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<div
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v-for="(line, idx) in gutterLines"
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:key="idx"
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class="mrmth-gutter-line"
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>
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<span v-if="line === ' '" class="mrmth-baseline-probe"></span>
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{{ line }}
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</div>
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</div>
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</div>
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<!-- Editor Container -->
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<div class="mrmth-editor-container" ref="editorContainerRef">
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<!-- Measure Layer for wrapped line calculations -->
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<pre
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ref="measureElRef"
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class="mrmth-measure"
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:style="sharedTextStyle"
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v-html="measureHtml"
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></pre>
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<!-- Syntax Highlighting Layer -->
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<pre
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ref="syntaxLayerRef"
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class="mrmth-syntax-layer"
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:style="sharedTextStyle"
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v-html="highlightedHtml"
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></pre>
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<!-- Textarea -->
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<textarea
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ref="textareaRef"
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v-model="modelValue"
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class="mrmth-script-textarea"
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:style="sharedTextStyle"
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spellcheck="false"
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autocapitalize="off"
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autocomplete="off"
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autocorrect="off"
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placeholder="Enter your script here..."
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@input="onInput"
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@scroll="onScroll"
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@keydown="onKeyDown"
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></textarea>
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</div>
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</div>
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</template>
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<script setup lang="ts">
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import { ref, computed, onMounted, onBeforeUnmount, nextTick, watch } from 'vue';
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import { KEYWORDS, CONSTANTS, FUNCTIONS } from './inbuilt_symbols.js';
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import { attachAutocomplete } from './autocomplete.js';
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// Define model for value binding
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const modelValue = defineModel<string>({ default: '' });
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// Refs for DOM elements
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const wrapperRef = ref<HTMLDivElement | null>(null);
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const gutterContentRef = ref<HTMLDivElement | null>(null);
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const editorContainerRef = ref<HTMLDivElement | null>(null);
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const measureElRef = ref<HTMLPreElement | null>(null);
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const syntaxLayerRef = ref<HTMLPreElement | null>(null);
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const textareaRef = ref<HTMLTextAreaElement | null>(null);
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// Reactive state
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const gutterLines = ref<string[]>(['1']);
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const editorHeight = ref<string>('170px');
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const scrollTop = ref<number>(0);
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const scrollLeft = ref<number>(0);
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const textareaWidth = ref<number>(0);
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// Style variables to sync with textarea computed styles
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const textareaStyles = ref({
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fontFamily: 'monospace',
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fontSize: '12px',
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fontWeight: '400',
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fontStyle: 'normal',
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lineHeight: '17.4px',
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padding: '8px 10px',
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});
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// Escape HTML utility
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const escapeHtml = (value: string): string => {
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return value
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.replace(/&/g, '&')
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.replace(/</g, '<')
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.replace(/>/g, '>')
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.replace(/"/g, '"')
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.replace(/'/g, ''');
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};
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const BRACKET_PAIRS: Record<string, string> = { '(': ')', '[': ']', '{': '}' };
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const OPENING_BRACKETS = new Set(['(', '[', '{']);
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const CLOSING_BRACKETS = new Set([')', ']', '}']);
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interface Token {
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type: string;
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value: string;
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depth: number;
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}
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// Tokenize standard input text
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const tokenize = (text: string): Token[] => {
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const tokens: Token[] = [];
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const pattern = /#.*|\/\*[\s\S]*?\*\/|"(?:\\.|[^"\\\r\n])*"|'(?:\\.|[^'\\\r\n])*'|\b\d+(?:\.\d*)?(?:[eE][+-]?\d+)?\b|\B\.\d+(?:[eE][+-]?\d+)?\b|==|!=|>=|<=|<<|>>|->|\+=|-=|\*=|\/=|%=|[+\-*/%^=<>|?:,;()\[\]{}]|\b[a-zA-Z_][a-zA-Z_0-9]*\b|\s+|./g;
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const bracketStack: string[] = [];
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const depthByType: Record<string, number> = { '(': 0, '[': 0, '{': 0 };
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let m;
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while ((m = pattern.exec(text)) !== null) {
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const value = m[0];
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let type = 'text';
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let depth = 0;
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if (value.startsWith('#') || value.startsWith('/*')) {
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type = 'comment';
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} else if (value.startsWith('"') || value.startsWith("'")) {
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type = 'string';
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} else if (OPENING_BRACKETS.has(value)) {
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depth = depthByType[value] || 0;
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depthByType[value] = depth + 1;
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bracketStack.push(value);
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type = 'bracket';
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} else if (CLOSING_BRACKETS.has(value)) {
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if (bracketStack.length) {
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const lastOpen = bracketStack[bracketStack.length - 1];
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if (BRACKET_PAIRS[lastOpen] === value) {
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depth = (depthByType[lastOpen] || 1) - 1;
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depthByType[lastOpen] = depth;
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bracketStack.pop();
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}
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}
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type = 'bracket';
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} else if (/^[+\-*/%^=<>|?:,;]|==|!=|>=|<=|<<|>>|->$/.test(value)) {
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type = 'operator';
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} else if (/^(?:\d+\.\d*|\d+|\.\d+)(?:[eE][+-]?\d+)?$/.test(value)) {
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type = 'number';
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} else if (/^[a-zA-Z_]/.test(value)) {
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if (KEYWORDS.has(value)) type = 'keyword';
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else if (CONSTANTS.has(value)) type = 'constant';
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else if (FUNCTIONS.has(value)) type = 'function';
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else type = 'variable';
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}
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tokens.push({ type, value, depth });
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}
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return tokens;
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};
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// Generate syntax highlighted HTML
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const highlightedHtml = computed(() => {
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return tokenize(modelValue.value)
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.map((t) => {
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if (t.type === 'text') return escapeHtml(t.value);
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if (t.type === 'bracket') {
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const d = t.depth % 6;
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return `<span class="mrmth-token-bracket mrmth-bracket-${d}">${escapeHtml(t.value)}</span>`;
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}
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return `<span class="mrmth-token-${t.type}">${escapeHtml(t.value)}</span>`;
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})
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.join('');
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});
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// Generate HTML for mirror measurement layer
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const measureHtml = computed(() => {
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const lines = modelValue.value.split('\n');
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return lines
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.map((line, idx) => {
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const content = line === '' ? ' ' : line;
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return `<span class="mrmth-ln-marker" data-ln="${idx}"></span>${escapeHtml(content)}`;
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})
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.join('\n');
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});
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// Line height measurement utility
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const getLineHeightPx = (el: HTMLTextAreaElement): number => {
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const style = window.getComputedStyle(el);
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const lh = parseFloat(style.lineHeight);
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if (Number.isFinite(lh) && lh > 0) return lh;
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const probe = document.createElement('span');
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probe.textContent = 'A';
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probe.style.position = 'absolute';
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probe.style.visibility = 'hidden';
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probe.style.fontFamily = style.fontFamily;
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probe.style.fontSize = style.fontSize;
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probe.style.fontWeight = style.fontWeight;
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probe.style.fontStyle = style.fontStyle;
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document.body.appendChild(probe);
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const h = probe.getBoundingClientRect().height || 16;
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probe.remove();
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return h;
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};
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// Stable delta offset tracker for smoothing
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const prevOffset = ref<number>(0);
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const stableCount = ref<number>(0);
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const locked = ref<boolean>(false);
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// Core alignment and line number updates
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const refresh = () => {
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const textarea = textareaRef.value;
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const measureEl = measureElRef.value;
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const gutterContent = gutterContentRef.value;
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if (!textarea || !measureEl || !gutterContent) return;
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textareaWidth.value = textarea.clientWidth;
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// Retrieve actual styles from textarea
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const cs = window.getComputedStyle(textarea);
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textareaStyles.value = {
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fontFamily: cs.fontFamily,
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fontSize: cs.fontSize,
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fontWeight: cs.fontWeight,
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fontStyle: cs.fontStyle,
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lineHeight: cs.lineHeight,
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padding: cs.padding,
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};
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const rawLines = modelValue.value.split('\n');
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const lineCount = Math.max(1, rawLines.length);
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const totalHeight = measureEl.offsetHeight;
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const parsedLH = parseFloat(cs.lineHeight);
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const lhPx = Number.isFinite(parsedLH) && parsedLH > 0 ? parsedLH : getLineHeightPx(textarea);
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const newGutterLines: string[] = [];
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for (let i = 0; i < lineCount; i++) {
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const marker = measureEl.querySelector(`[data-ln="${i}"]`) as HTMLElement | null;
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const nextMarker = i < lineCount - 1 ? measureEl.querySelector(`[data-ln="${i + 1}"]`) as HTMLElement | null : null;
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const y0 = marker ? marker.offsetTop : i * lhPx;
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const y1 = nextMarker ? nextMarker.offsetTop : totalHeight;
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const visualLines = Math.max(1, Math.round((y1 - y0) / lhPx));
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newGutterLines.push(String(i + 1));
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for (let j = 1; j < visualLines; j++) {
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newGutterLines.push(' ');
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}
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}
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gutterLines.value = newGutterLines;
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// Perform baseline and transform alignment on next tick
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nextTick(() => {
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const firstMarker = measureEl.querySelector(`[data-ln="0"]`) as HTMLElement | null;
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const gutterFirstLine = gutterContent.firstElementChild as HTMLElement | null;
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if (!firstMarker || !gutterFirstLine) return;
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// ensure probes exist
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let measureProbe = firstMarker.querySelector('.mrmth-baseline-probe') as HTMLElement | null;
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if (!measureProbe) {
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measureProbe = document.createElement('span');
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measureProbe.className = 'mrmth-baseline-probe';
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measureProbe.style.display = 'inline-block';
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measureProbe.style.width = '0px';
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measureProbe.style.height = '0px';
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measureProbe.style.lineHeight = '0';
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measureProbe.style.verticalAlign = 'baseline';
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measureProbe.style.overflow = 'hidden';
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firstMarker.appendChild(measureProbe);
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}
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let gutterProbe = gutterFirstLine.querySelector('.mrmth-baseline-probe') as HTMLElement | null;
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if (!gutterProbe) {
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gutterProbe = document.createElement('span');
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gutterProbe.className = 'mrmth-baseline-probe';
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gutterProbe.style.display = 'inline-block';
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gutterProbe.style.width = '0px';
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gutterProbe.style.height = '0px';
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gutterProbe.style.lineHeight = '0';
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gutterProbe.style.verticalAlign = 'baseline';
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gutterProbe.style.overflow = 'hidden';
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gutterFirstLine.insertAdjacentElement('afterbegin', gutterProbe);
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}
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let baselineDelta = 0;
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try {
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const mProbeRect = measureProbe.getBoundingClientRect();
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const gProbeRect = gutterProbe.getBoundingClientRect();
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const mRect = measureEl.getBoundingClientRect();
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const gRect = gutterContent.getBoundingClientRect();
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const mOffset = mProbeRect.top - mRect.top;
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const gOffset = gProbeRect.top - gRect.top;
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baselineDelta = mOffset - gOffset;
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} catch (e) {
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baselineDelta = firstMarker.offsetTop + measureProbe.offsetTop - (gutterFirstLine.offsetTop + gutterProbe.offsetTop);
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}
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if (!Number.isFinite(baselineDelta)) baselineDelta = prevOffset.value;
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const maxJumpPerFrame = 20;
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if (locked.value) {
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baselineDelta = prevOffset.value;
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} else {
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const jump = baselineDelta - prevOffset.value;
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if (Math.abs(jump) > maxJumpPerFrame) {
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baselineDelta = prevOffset.value + Math.sign(jump) * maxJumpPerFrame;
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}
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if (Math.abs(baselineDelta) > 200) {
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baselineDelta = prevOffset.value;
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}
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const postJump = baselineDelta - prevOffset.value;
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if (Math.abs(postJump) <= 1) stableCount.value++;
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else stableCount.value = 0;
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if (stableCount.value >= 3) locked.value = true;
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}
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prevOffset.value = baselineDelta;
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const halfLineCorrection = lhPx / 2;
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const adjustedBaseline = baselineDelta - halfLineCorrection;
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// Apply translation to gutter
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gutterContent.style.transform = `translateY(${adjustedBaseline - scrollTop.value}px)`;
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// Handle height resizing of the editor component
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const contentHeight = measureEl.offsetHeight || (lhPx * lineCount);
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const parent = wrapperRef.value?.parentElement;
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const parentHeight = parent ? parent.clientHeight : null;
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const minHeight = 170;
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let maxHeight = 600;
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if (parentHeight !== null && parentHeight > 0) {
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maxHeight = Math.max(minHeight, parentHeight - 12);
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}
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const desired = Math.min(Math.max(contentHeight, minHeight), maxHeight);
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// FIX: If containing node is larger than text height (user enlarged the node), fill 100% of parent height
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if (parentHeight && parentHeight > desired + 20) {
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editorHeight.value = '100%';
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} else {
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editorHeight.value = desired + 'px';
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}
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});
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};
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// Event handlers
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const onInput = () => {
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refresh();
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};
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const onScroll = () => {
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const textarea = textareaRef.value;
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const syntaxLayer = syntaxLayerRef.value;
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const gutterContent = gutterContentRef.value;
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if (!textarea) return;
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scrollTop.value = textarea.scrollTop;
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scrollLeft.value = textarea.scrollLeft;
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if (syntaxLayer) {
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syntaxLayer.scrollTop = textarea.scrollTop;
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syntaxLayer.scrollLeft = textarea.scrollLeft;
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}
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if (gutterContent) {
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const halfLineCorrection = (parseFloat(textareaStyles.value.lineHeight) || 17.4) / 2;
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const adjustedBaseline = prevOffset.value - halfLineCorrection;
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gutterContent.style.transform = `translateY(${adjustedBaseline - textarea.scrollTop}px)`;
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}
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};
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const onKeyDown = (e: KeyboardEvent) => {
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if (!OPENING_BRACKETS.has(e.key)) return;
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const textarea = textareaRef.value;
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if (!textarea) return;
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const start = textarea.selectionStart;
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const end = textarea.selectionEnd;
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if (start !== end) return;
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const nextChar = modelValue.value[start] ?? '';
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const closing = BRACKET_PAIRS[e.key];
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if (/[a-zA-Z0-9_]/.test(nextChar) || nextChar === closing) return;
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e.preventDefault();
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modelValue.value = `${modelValue.value.slice(0, start)}${e.key}${closing}${modelValue.value.slice(start)}`;
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nextTick(() => {
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textarea.selectionStart = textarea.selectionEnd = start + 1;
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refresh();
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});
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};
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// Computed styles
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const sharedTextStyle = computed(() => {
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return {
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fontFamily: textareaStyles.value.fontFamily,
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fontSize: textareaStyles.value.fontSize,
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fontWeight: textareaStyles.value.fontWeight,
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fontStyle: textareaStyles.value.fontStyle,
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lineHeight: textareaStyles.value.lineHeight,
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padding: textareaStyles.value.padding,
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width: textareaWidth.value ? `${textareaWidth.value}px` : '100%',
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boxSizing: 'border-box' as const,
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};
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});
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const gutterStyle = computed(() => {
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return {
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fontFamily: textareaStyles.value.fontFamily,
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fontSize: textareaStyles.value.fontSize,
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fontWeight: textareaStyles.value.fontWeight,
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fontStyle: textareaStyles.value.fontStyle,
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lineHeight: textareaStyles.value.lineHeight,
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padding: textareaStyles.value.padding,
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boxSizing: 'border-box' as const,
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};
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});
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const editorStyle = computed(() => {
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return {
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height: editorHeight.value,
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};
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});
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// Setup observers
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let resizeObserver: ResizeObserver | null = null;
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let autocompleteController: { destroy: () => void } | null = null;
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onMounted(() => {
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refresh();
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// Ensure refresh also settles after parent and layout rendering
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setTimeout(refresh, 50);
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setTimeout(refresh, 200);
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if (window.ResizeObserver && editorContainerRef.value) {
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resizeObserver = new ResizeObserver(() => {
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refresh();
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});
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resizeObserver.observe(editorContainerRef.value);
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}
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nextTick(() => {
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if (textareaRef.value && editorContainerRef.value) {
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autocompleteController = attachAutocomplete(textareaRef.value, editorContainerRef.value);
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}
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});
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});
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onBeforeUnmount(() => {
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autocompleteController?.destroy();
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if (resizeObserver) {
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resizeObserver.disconnect();
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}
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});
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watch(modelValue, () => {
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refresh();
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});
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</script>
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<style scoped>
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.mrmth-editor {
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display: flex;
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align-items: stretch;
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width: 100%;
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border: 1px solid rgba(255, 255, 255, 0.12);
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border-radius: 8px;
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overflow: hidden;
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background: rgba(0, 0, 0, 0.18);
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box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.15);
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transition: border-color 0.25s ease, box-shadow 0.25s ease;
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font-family: monospace;
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}
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.mrmth-editor:focus-within {
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border-color: var(--p-primary-color, #4ea658);
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box-shadow: 0 0 0 2px rgba(78, 166, 88, 0.2), inset 0 2px 4px rgba(0, 0, 0, 0.15);
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}
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.mrmth-gutter {
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padding: 0;
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min-width: 44px;
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text-align: right;
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user-select: none;
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color: #9aa0a6;
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background: rgba(0, 0, 0, 0.35);
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border-right: 1px solid rgba(255, 255, 255, 0.12);
|
|
box-sizing: border-box;
|
|
overflow: hidden;
|
|
position: relative;
|
|
}
|
|
|
|
.mrmth-gutter-content {
|
|
white-space: pre;
|
|
will-change: transform;
|
|
}
|
|
|
|
.mrmth-gutter-line {
|
|
padding: 0 8px;
|
|
display: block;
|
|
}
|
|
|
|
.mrmth-baseline-probe {
|
|
display: inline-block;
|
|
width: 0;
|
|
height: 0;
|
|
line-height: 0;
|
|
overflow: hidden;
|
|
}
|
|
|
|
.mrmth-editor-container {
|
|
position: relative;
|
|
flex: 1;
|
|
min-width: 0;
|
|
height: 100%;
|
|
overflow: hidden;
|
|
background: transparent;
|
|
}
|
|
|
|
.mrmth-measure {
|
|
position: absolute;
|
|
visibility: hidden;
|
|
pointer-events: none;
|
|
inset: 0 auto auto 0;
|
|
white-space: pre-wrap;
|
|
overflow-wrap: anywhere;
|
|
word-break: break-word;
|
|
height: auto;
|
|
margin: 0 !important;
|
|
}
|
|
|
|
.mrmth-syntax-layer {
|
|
position: absolute;
|
|
inset: 0;
|
|
z-index: 3;
|
|
pointer-events: none;
|
|
white-space: pre-wrap;
|
|
overflow-wrap: anywhere;
|
|
word-break: break-word;
|
|
overflow: hidden;
|
|
opacity: 1;
|
|
margin: 0 !important;
|
|
color: #ecf0f1;
|
|
}
|
|
|
|
.mrmth-script-textarea {
|
|
position: absolute;
|
|
inset: 0;
|
|
z-index: 2;
|
|
border: 0 !important;
|
|
outline: none !important;
|
|
resize: none !important;
|
|
color: transparent !important;
|
|
caret-color: #ffffff !important;
|
|
background: transparent !important;
|
|
mix-blend-mode: normal;
|
|
-webkit-text-fill-color: transparent;
|
|
overflow-y: auto;
|
|
scrollbar-gutter: stable;
|
|
-webkit-overflow-scrolling: touch;
|
|
margin: 0 !important;
|
|
}
|
|
|
|
/* Syntax Token Highlighting */
|
|
:deep(.mrmth-token-comment) { color: #7f8c8d; font-style: italic; }
|
|
:deep(.mrmth-token-number) { color: #f39c12; }
|
|
:deep(.mrmth-token-constant) { color: #f1c40f; font-weight: 500; }
|
|
:deep(.mrmth-token-keyword) { color: #e74c3c; font-weight: 500; }
|
|
:deep(.mrmth-token-function) { color: #9b59b6; }
|
|
:deep(.mrmth-token-variable) { color: #ecf0f1; }
|
|
:deep(.mrmth-token-operator) { color: #3498db; }
|
|
:deep(.mrmth-token-string) { color: #2ecc71; }
|
|
:deep(.mrmth-token-bracket) { font-weight: 700; }
|
|
|
|
:deep(.mrmth-bracket-0) { color: #ffd700; }
|
|
:deep(.mrmth-bracket-1) { color: #da70d6; }
|
|
:deep(.mrmth-bracket-2) { color: #87cefa; }
|
|
:deep(.mrmth-bracket-3) { color: #98fb98; }
|
|
:deep(.mrmth-bracket-4) { color: #ff6347; }
|
|
:deep(.mrmth-bracket-5) { color: #ffa500; }
|
|
</style>
|