From a8f73b605ea403e3dcf5d095b2b20c7b821e3c7d Mon Sep 17 00:00:00 2001
From: 18alantom <2.alan.tom@gmail.com>
Date: Wed, 8 Mar 2023 14:31:02 +0530
Subject: [PATCH] incr: use codemirror for editing

---
 package.json                                  |   2 +
 src/pages/TemplateBuilder/TemplateBuilder.vue |  48 ++---
 src/pages/TemplateBuilder/TemplateEditor.vue  |  98 +++++++++
 yarn.lock                                     | 186 ++++++++++++++++++
 4 files changed, 302 insertions(+), 32 deletions(-)
 create mode 100644 src/pages/TemplateBuilder/TemplateEditor.vue

diff --git a/package.json b/package.json
index fd65cea2..42069858 100644
--- a/package.json
+++ b/package.json
@@ -20,8 +20,10 @@
     "test": "scripts/test.sh"
   },
   "dependencies": {
+    "@codemirror/lang-vue": "^0.1.1",
     "@popperjs/core": "^2.10.2",
     "better-sqlite3": "^7.5.3",
+    "codemirror": "^6.0.1",
     "core-js": "^3.19.0",
     "electron-store": "^8.0.1",
     "feather-icons": "^4.28.0",
diff --git a/src/pages/TemplateBuilder/TemplateBuilder.vue b/src/pages/TemplateBuilder/TemplateBuilder.vue
index 5e700982..de999b5c 100644
--- a/src/pages/TemplateBuilder/TemplateBuilder.vue
+++ b/src/pages/TemplateBuilder/TemplateBuilder.vue
@@ -196,36 +196,14 @@
             {{ t`Template` }}
           </h2>
           <div
-            class="overflow-auto custom-scroll p-4"
-            style="max-height: 80vh; max-width: 65vw"
+            class="overflow-auto custom-scroll"
+            style="max-height: 80vh; width: 65vw"
           >
-            <textarea
-              v-if="!templateCollapsed"
-              style="
-                font-family: monospace;
-                white-space: pre;
-                overflow-wrap: normal;
-                resize: both;
-              "
-              :value="doc.template ?? ''"
-              :spellcheck="false"
-              cols="74"
-              rows="31"
-              class="
-                overflow-auto
-                p-2
-                border
-                rounded
-                text-sm text-gray-900
-                focus-within:bg-gray-100
-                outline-none
-                bg-gray-50
-              "
-              @change="
-              async (e: Event) => await doc?.set('template', (e.target as HTMLTextAreaElement).value)
-            "
-              :disabled="!doc?.isCustom"
-            ></textarea>
+            <TemplateEditor
+              v-if="!templateCollapsed && typeof doc.template === 'string'"
+              v-model.lazy="doc.template"
+              :disabled="!doc.isCustom"
+            />
           </div>
         </div>
       </div>
@@ -257,6 +235,7 @@ import { getMapFromList } from 'utils/index';
 import { computed, defineComponent } from 'vue';
 import PrintContainer from './PrintContainer.vue';
 import TemplateBuilderHint from './TemplateBuilderHint.vue';
+import TemplateEditor from './TemplateEditor.vue';
 
 export default defineComponent({
   props: { name: String },
@@ -268,6 +247,7 @@ export default defineComponent({
     TemplateBuilderHint,
     DropdownWithActions,
     PrintContainer,
+    TemplateEditor,
   },
   provide() {
     return { doc: computed(() => this.doc) };
@@ -300,12 +280,16 @@ export default defineComponent({
       this.helpersCollapsed = false;
     }
 
+    if (this.doc?.template == null) {
+      await this.doc?.set('template', '');
+    }
+
+    await this.setDisplayInitialDoc();
+
     if (this.fyo.store.isDevelopment) {
       // @ts-ignore
       window.tb = this;
     }
-
-    await this.setInitialDoc();
   },
   methods: {
     async savePDF() {
@@ -319,7 +303,7 @@ export default defineComponent({
 
       printContainer.savePDF(this.displayDoc?.name);
     },
-    async setInitialDoc() {
+    async setDisplayInitialDoc() {
       const schemaName = this.doc?.type;
       if (!schemaName || this.displayDoc?.schemaName === schemaName) {
         return;
diff --git a/src/pages/TemplateBuilder/TemplateEditor.vue b/src/pages/TemplateBuilder/TemplateEditor.vue
new file mode 100644
index 00000000..35001283
--- /dev/null
+++ b/src/pages/TemplateBuilder/TemplateEditor.vue
@@ -0,0 +1,98 @@
+<template>
+  <div ref="container"></div>
+</template>
+<script lang="ts">
+import { vue } from '@codemirror/lang-vue';
+import { Compartment, EditorState } from '@codemirror/state';
+import { ViewUpdate, EditorView } from '@codemirror/view';
+import { basicSetup } from 'codemirror';
+import { defineComponent } from 'vue';
+import { markRaw } from 'vue';
+
+export default defineComponent({
+  data() {
+    return { state: null, view: null, compartments: {}, changed: false } as {
+      state: EditorState | null;
+      view: EditorView | null;
+      compartments: Record<string, Compartment>;
+      changed: boolean;
+    };
+  },
+  props: {
+    modelModifiers: { type: Object, default: () => ({}) },
+    modelValue: { type: String, required: true },
+    disabled: { type: Boolean, default: false },
+  },
+  watch: {
+    disabled(value: boolean) {
+      this.setDisabled(value);
+    },
+  },
+  emits: ['update:modelValue'],
+  mounted() {
+    if (!this.view) {
+      this.init();
+    }
+
+    // @ts-ignore
+    window.vte = this;
+  },
+  methods: {
+    init() {
+      const readOnly = new Compartment();
+      const editable = new Compartment();
+
+      const view = new EditorView({
+        doc: this.modelValue,
+        extensions: [
+          EditorView.updateListener.of(this.updateListener),
+          readOnly.of(EditorState.readOnly.of(this.disabled)),
+          editable.of(EditorView.editable.of(!this.disabled)),
+          basicSetup,
+          vue(),
+        ],
+        parent: this.container,
+      });
+      this.view = markRaw(view);
+
+      const compartments = { readOnly, editable };
+      this.compartments = markRaw(compartments);
+    },
+    updateListener(update: ViewUpdate) {
+      if (update.docChanged) {
+        this.changed = true;
+      }
+
+      if (this.modelModifiers.lazy && !update.focusChanged) {
+        return;
+      }
+
+      if (!this.changed) {
+        return;
+      }
+
+      this.$emit('update:modelValue', this.view?.state.doc.toString() ?? '');
+      this.changed = false;
+    },
+    setDisabled(value: boolean) {
+      const { readOnly, editable } = this.compartments;
+      this.view?.dispatch({
+        effects: [
+          readOnly.reconfigure(EditorState.readOnly.of(value)),
+          editable.reconfigure(EditorView.editable.of(!value)),
+        ],
+      });
+    },
+  },
+  computed: {
+    container() {
+      const { container } = this.$refs;
+      if (container instanceof HTMLDivElement) {
+        return container;
+      }
+
+      throw new Error('ref container is not a div element');
+    },
+  },
+});
+</script>
diff --git a/yarn.lock b/yarn.lock
index 9983d6af..d9b6cec5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -962,6 +962,120 @@
     "@babel/helper-validator-identifier" "^7.15.7"
     to-fast-properties "^2.0.0"
 
+"@codemirror/autocomplete@^6.0.0":
+  version "6.4.2"
+  resolved "https://registry.yarnpkg.com/@codemirror/autocomplete/-/autocomplete-6.4.2.tgz#938b25223bd21f97b2a6d85474643355f98b505b"
+  integrity sha512-8WE2xp+D0MpWEv5lZ6zPW1/tf4AGb358T5GWYiKEuCP8MvFfT3tH2mIF9Y2yr2e3KbHuSvsVhosiEyqCpiJhZQ==
+  dependencies:
+    "@codemirror/language" "^6.0.0"
+    "@codemirror/state" "^6.0.0"
+    "@codemirror/view" "^6.6.0"
+    "@lezer/common" "^1.0.0"
+
+"@codemirror/commands@^6.0.0":
+  version "6.2.1"
+  resolved "https://registry.yarnpkg.com/@codemirror/commands/-/commands-6.2.1.tgz#ab5e979ad1458bbe395bf69ac601f461ac73cf08"
+  integrity sha512-FFiNKGuHA5O8uC6IJE5apI5rT9gyjlw4whqy4vlcX0wE/myxL6P1s0upwDhY4HtMWLOwzwsp0ap3bjdQhvfDOA==
+  dependencies:
+    "@codemirror/language" "^6.0.0"
+    "@codemirror/state" "^6.2.0"
+    "@codemirror/view" "^6.0.0"
+    "@lezer/common" "^1.0.0"
+
+"@codemirror/lang-css@^6.0.0":
+  version "6.1.0"
+  resolved "https://registry.yarnpkg.com/@codemirror/lang-css/-/lang-css-6.1.0.tgz#a40e6b772f4e98fd7c6f84061a0a838cabc3f082"
+  integrity sha512-GYn4TyMvQLrkrhdisFh8HCTDAjPY/9pzwN12hG9UdrTUxRUMicF+8GS24sFEYaleaG1KZClIFLCj0Rol/WO24w==
+  dependencies:
+    "@codemirror/autocomplete" "^6.0.0"
+    "@codemirror/language" "^6.0.0"
+    "@codemirror/state" "^6.0.0"
+    "@lezer/css" "^1.0.0"
+
+"@codemirror/lang-html@^6.0.0":
+  version "6.4.2"
+  resolved "https://registry.yarnpkg.com/@codemirror/lang-html/-/lang-html-6.4.2.tgz#3c7117e45bae009bc7bc08eef8a79b5d05930d83"
+  integrity sha512-bqCBASkteKySwtIbiV/WCtGnn/khLRbbiV5TE+d9S9eQJD7BA4c5dTRm2b3bVmSpilff5EYxvB4PQaZzM/7cNw==
+  dependencies:
+    "@codemirror/autocomplete" "^6.0.0"
+    "@codemirror/lang-css" "^6.0.0"
+    "@codemirror/lang-javascript" "^6.0.0"
+    "@codemirror/language" "^6.4.0"
+    "@codemirror/state" "^6.0.0"
+    "@codemirror/view" "^6.2.2"
+    "@lezer/common" "^1.0.0"
+    "@lezer/css" "^1.1.0"
+    "@lezer/html" "^1.3.0"
+
+"@codemirror/lang-javascript@^6.0.0", "@codemirror/lang-javascript@^6.1.2":
+  version "6.1.4"
+  resolved "https://registry.yarnpkg.com/@codemirror/lang-javascript/-/lang-javascript-6.1.4.tgz#8a41f4d213e1143b4eef6f65f8b77b349aaf894c"
+  integrity sha512-OxLf7OfOZBTMRMi6BO/F72MNGmgOd9B0vetOLvHsDACFXayBzW8fm8aWnDM0yuy68wTK03MBf4HbjSBNRG5q7A==
+  dependencies:
+    "@codemirror/autocomplete" "^6.0.0"
+    "@codemirror/language" "^6.6.0"
+    "@codemirror/lint" "^6.0.0"
+    "@codemirror/state" "^6.0.0"
+    "@codemirror/view" "^6.0.0"
+    "@lezer/common" "^1.0.0"
+    "@lezer/javascript" "^1.0.0"
+
+"@codemirror/lang-vue@^0.1.1":
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/@codemirror/lang-vue/-/lang-vue-0.1.1.tgz#79567fb3be3f411354cd135af59d67f956cdb042"
+  integrity sha512-GIfc/MemCFKUdNSYGTFZDN8XsD2z0DUY7DgrK34on0dzdZ/CawZbi+SADYfVzWoPPdxngHzLhqlR5pSOqyPCvA==
+  dependencies:
+    "@codemirror/lang-html" "^6.0.0"
+    "@codemirror/lang-javascript" "^6.1.2"
+    "@codemirror/language" "^6.0.0"
+    "@lezer/common" "^1.0.0"
+    "@lezer/highlight" "^1.0.0"
+    "@lezer/lr" "^1.3.1"
+
+"@codemirror/language@^6.0.0", "@codemirror/language@^6.4.0", "@codemirror/language@^6.6.0":
+  version "6.6.0"
+  resolved "https://registry.yarnpkg.com/@codemirror/language/-/language-6.6.0.tgz#2204407174a38a68053715c19e28ad61f491779f"
+  integrity sha512-cwUd6lzt3MfNYOobdjf14ZkLbJcnv4WtndYaoBkbor/vF+rCNguMPK0IRtvZJG4dsWiaWPcK8x1VijhvSxnstg==
+  dependencies:
+    "@codemirror/state" "^6.0.0"
+    "@codemirror/view" "^6.0.0"
+    "@lezer/common" "^1.0.0"
+    "@lezer/highlight" "^1.0.0"
+    "@lezer/lr" "^1.0.0"
+    style-mod "^4.0.0"
+
+"@codemirror/lint@^6.0.0":
+  version "6.2.0"
+  resolved "https://registry.yarnpkg.com/@codemirror/lint/-/lint-6.2.0.tgz#25cdab7425fcda1b38a9d63f230f833c8b6b369f"
+  integrity sha512-KVCECmR2fFeYBr1ZXDVue7x3q5PMI0PzcIbA+zKufnkniMBo1325t0h1jM85AKp8l3tj67LRxVpZfgDxEXlQkg==
+  dependencies:
+    "@codemirror/state" "^6.0.0"
+    "@codemirror/view" "^6.0.0"
+    crelt "^1.0.5"
+
+"@codemirror/search@^6.0.0":
+  version "6.2.3"
+  resolved "https://registry.yarnpkg.com/@codemirror/search/-/search-6.2.3.tgz#fab933fef1b1de8ef40cda275c73d9ac7a1ff40f"
+  integrity sha512-V9n9233lopQhB1dyjsBK2Wc1i+8hcCqxl1wQ46c5HWWLePoe4FluV3TGHoZ04rBRlGjNyz9DTmpJErig8UE4jw==
+  dependencies:
+    "@codemirror/state" "^6.0.0"
+    "@codemirror/view" "^6.0.0"
+    crelt "^1.0.5"
+
+"@codemirror/state@^6.0.0", "@codemirror/state@^6.1.4", "@codemirror/state@^6.2.0":
+  version "6.2.0"
+  resolved "https://registry.yarnpkg.com/@codemirror/state/-/state-6.2.0.tgz#a0fb08403ced8c2a68d1d0acee926bd20be922f2"
+  integrity sha512-69QXtcrsc3RYtOtd+GsvczJ319udtBf1PTrr2KbLWM/e2CXUPnh0Nz9AUo8WfhSQ7GeL8dPVNUmhQVgpmuaNGA==
+
+"@codemirror/view@^6.0.0", "@codemirror/view@^6.2.2", "@codemirror/view@^6.6.0":
+  version "6.9.1"
+  resolved "https://registry.yarnpkg.com/@codemirror/view/-/view-6.9.1.tgz#2ce4c528974b6172a5a4a738b7b0a0f04a4c1140"
+  integrity sha512-bzfSjJn9dAADVpabLKWKNmMG4ibyTV2e3eOGowjElNPTdTkSbi6ixPYHm2u0ADcETfKsi2/R84Rkmi91dH9yEg==
+  dependencies:
+    "@codemirror/state" "^6.1.4"
+    style-mod "^4.0.0"
+    w3c-keyname "^2.2.4"
+
 "@cspotcode/source-map-consumer@0.8.0":
   version "0.8.0"
   resolved "https://registry.yarnpkg.com/@cspotcode/source-map-consumer/-/source-map-consumer-0.8.0.tgz#33bf4b7b39c178821606f669bbc447a6a629786b"
@@ -1195,6 +1309,50 @@
     "@jridgewell/resolve-uri" "^3.0.3"
     "@jridgewell/sourcemap-codec" "^1.4.10"
 
+"@lezer/common@^1.0.0":
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/@lezer/common/-/common-1.0.2.tgz#8fb9b86bdaa2ece57e7d59e5ffbcb37d71815087"
+  integrity sha512-SVgiGtMnMnW3ActR8SXgsDhw7a0w0ChHSYAyAUxxrOiJ1OqYWEKk/xJd84tTSPo1mo6DXLObAJALNnd0Hrv7Ng==
+
+"@lezer/css@^1.0.0", "@lezer/css@^1.1.0":
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/@lezer/css/-/css-1.1.1.tgz#c36dcb0789317cb80c3740767dd3b85e071ad082"
+  integrity sha512-mSjx+unLLapEqdOYDejnGBokB5+AiJKZVclmud0MKQOKx3DLJ5b5VTCstgDDknR6iIV4gVrN6euzsCnj0A2gQA==
+  dependencies:
+    "@lezer/highlight" "^1.0.0"
+    "@lezer/lr" "^1.0.0"
+
+"@lezer/highlight@^1.0.0", "@lezer/highlight@^1.1.3":
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/@lezer/highlight/-/highlight-1.1.3.tgz#bf5a36c2ee227f526d74997ac91f7777e29bd25d"
+  integrity sha512-3vLKLPThO4td43lYRBygmMY18JN3CPh9w+XS2j8WC30vR4yZeFG4z1iFe4jXE43NtGqe//zHW5q8ENLlHvz9gw==
+  dependencies:
+    "@lezer/common" "^1.0.0"
+
+"@lezer/html@^1.3.0":
+  version "1.3.3"
+  resolved "https://registry.yarnpkg.com/@lezer/html/-/html-1.3.3.tgz#2eddae2ad000f9b184d9fc4686394d0fa0849993"
+  integrity sha512-04Fyvu66DjV2EjhDIG1kfDdktn5Pfw56SXPrzKNQH5B2m7BDfc6bDsz+ZJG8dLS3kIPEKbyyq1Sm2/kjeG0+AA==
+  dependencies:
+    "@lezer/common" "^1.0.0"
+    "@lezer/highlight" "^1.0.0"
+    "@lezer/lr" "^1.0.0"
+
+"@lezer/javascript@^1.0.0":
+  version "1.4.1"
+  resolved "https://registry.yarnpkg.com/@lezer/javascript/-/javascript-1.4.1.tgz#97a15042c76b5979af6a069fac83cf6485628cbf"
+  integrity sha512-Hqx36DJeYhKtdpc7wBYPR0XF56ZzIp0IkMO/zNNj80xcaFOV4Oj/P7TQc/8k2TxNhzl7tV5tXS8ZOCPbT4L3nA==
+  dependencies:
+    "@lezer/highlight" "^1.1.3"
+    "@lezer/lr" "^1.3.0"
+
+"@lezer/lr@^1.0.0", "@lezer/lr@^1.3.0", "@lezer/lr@^1.3.1":
+  version "1.3.3"
+  resolved "https://registry.yarnpkg.com/@lezer/lr/-/lr-1.3.3.tgz#0ac6c889f1235874f33c45a1b9785d7054f60708"
+  integrity sha512-JPQe3mwJlzEVqy67iQiiGozhcngbO8QBgpqZM6oL1Wj/dXckrEexpBLeFkq0edtW5IqnPRFxA24BHJni8Js69w==
+  dependencies:
+    "@lezer/common" "^1.0.0"
+
 "@malept/cross-spawn-promise@^1.1.0":
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/@malept/cross-spawn-promise/-/cross-spawn-promise-1.1.1.tgz#504af200af6b98e198bce768bc1730c6936ae01d"
@@ -3903,6 +4061,19 @@ code-point-at@^1.0.0:
   resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
   integrity sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=
 
+codemirror@^6.0.1:
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/codemirror/-/codemirror-6.0.1.tgz#62b91142d45904547ee3e0e0e4c1a79158035a29"
+  integrity sha512-J8j+nZ+CdWmIeFIGXEFbFPtpiYacFMDR8GlHK3IyHQJMCaVRfGx9NT+Hxivv1ckLWPvNdZqndbr/7lVhrf/Svg==
+  dependencies:
+    "@codemirror/autocomplete" "^6.0.0"
+    "@codemirror/commands" "^6.0.0"
+    "@codemirror/language" "^6.0.0"
+    "@codemirror/lint" "^6.0.0"
+    "@codemirror/search" "^6.0.0"
+    "@codemirror/state" "^6.0.0"
+    "@codemirror/view" "^6.0.0"
+
 collection-visit@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/collection-visit/-/collection-visit-1.0.0.tgz#4bc0373c164bc3291b4d368c829cf1a80a59dca0"
@@ -4295,6 +4466,11 @@ create-require@^1.1.0:
   resolved "https://registry.yarnpkg.com/create-require/-/create-require-1.1.1.tgz#c1d7e8f1e5f6cfc9ff65f9cd352d37348756c333"
   integrity sha512-dcKFX3jn0MpIaXjisoRvexIJVEKzaq7z2rZKxf+MSr9TkdmHmsU4m2lcLojrj/FHl8mk5VxMmYA+ftRkP/3oKQ==
 
+crelt@^1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/crelt/-/crelt-1.0.5.tgz#57c0d52af8c859e354bace1883eb2e1eb182bb94"
+  integrity sha512-+BO9wPPi+DWTDcNYhr/W90myha8ptzftZT+LwcmUbbok0rcP/fequmFYCw8NMoH7pkAZQzU78b3kYrlua5a9eA==
+
 cross-spawn@^5.0.1:
   version "5.1.0"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-5.1.0.tgz#e8bd0efee58fcff6f8f94510a0a554bbfa235449"
@@ -11545,6 +11721,11 @@ strip-json-comments@~2.0.1:
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
   integrity sha1-PFMZQukIwml8DsNEhYwobHygpgo=
 
+style-mod@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/style-mod/-/style-mod-4.0.0.tgz#97e7c2d68b592975f2ca7a63d0dd6fcacfe35a01"
+  integrity sha512-OPhtyEjyyN9x3nhPsu76f52yUGXiZcgvsrFVtvTkyGRQJ0XK+GPc6ov1z+lRpbeabka+MYEQxOYRnt5nF30aMw==
+
 stylehacks@^4.0.0:
   version "4.0.3"
   resolved "https://registry.yarnpkg.com/stylehacks/-/stylehacks-4.0.3.tgz#6718fcaf4d1e07d8a1318690881e8d96726a71d5"
@@ -12635,6 +12816,11 @@ vue@^3.2.40:
     "@vue/server-renderer" "3.2.40"
     "@vue/shared" "3.2.40"
 
+w3c-keyname@^2.2.4:
+  version "2.2.6"
+  resolved "https://registry.yarnpkg.com/w3c-keyname/-/w3c-keyname-2.2.6.tgz#8412046116bc16c5d73d4e612053ea10a189c85f"
+  integrity sha512-f+fciywl1SJEniZHD6H+kUO8gOnwIr7f4ijKA6+ZvJFjeGi1r4PDLl53Ayud9O/rk64RqgoQine0feoeOU0kXg==
+
 watchpack-chokidar2@^2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/watchpack-chokidar2/-/watchpack-chokidar2-2.0.1.tgz#38500072ee6ece66f3769936950ea1771be1c957"