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src/components/CodeEditor.vue

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+<script lang="ts" setup>
+import { computed, ref, watch } from "vue"
+import { useDark } from "@vueuse/core"
+import { Codemirror } from "vue-codemirror"
+import { cpp } from "@codemirror/lang-cpp"
+import { python } from "@codemirror/lang-python"
+import { EditorView } from "@codemirror/view"
+import { LANGUAGE } from "../types"
+import { oneDark } from "../themes/oneDark"
+import { smoothy } from "../themes/smoothy"
+
+interface Props {
+  label: string
+  modelValue: string
+  language?: LANGUAGE
+  fontSize?: number
+  readonly?: boolean
+  placeholder?: string
+}
+
+const props = withDefaults(defineProps<Props>(), {
+  language: "c",
+  fontSize: 24,
+  readonly: false,
+  placeholder: "",
+})
+
+const code = ref(props.modelValue)
+const isDark = useDark()
+const styleTheme = EditorView.baseTheme({
+  "& .cm-scroller": {
+    "font-family": "Consolas",
+  },
+  "&.cm-editor.cm-focused": {
+    outline: "none",
+  },
+})
+const emit = defineEmits(["update:modelValue"])
+
+watch(
+  () => props.modelValue,
+  (v) => {
+    code.value = v
+  },
+)
+
+const lang = computed(() => {
+  if (props.language === "c") {
+    return cpp()
+  }
+  return python()
+})
+
+function onChange(v: string) {
+  emit("update:modelValue", v)
+}
+</script>
+<template>
+  <div class="container">
+    <div class="title">{{ label }}</div>
+    <Codemirror
+      v-model="code"
+      indentWithTab
+      :extensions="[styleTheme, lang, isDark ? oneDark : smoothy]"
+      :disabled="props.readonly"
+      :tabSize="4"
+      :placeholder="props.placeholder"
+      :style="{ height: '100%', fontSize: props.fontSize + 'px' }"
+      @change="onChange"
+    />
+  </div>
+</template>
+<style scoped>
+.container {
+  height: 100%;
+}
+.title {
+  padding: 12px 20px;
+  font-size: 16px;
+}
+</style>