From 41cff2af6c79969ad38115fd4641a0dc03a70024 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Luk=C3=A1=C5=A1=20Hornych?= <lukashornych@proton.me>
Date: Wed, 6 Dec 2023 22:45:54 +0100
Subject: [PATCH] feat(#70): codemirror status bar with selection info and
 spaces info

---
 src/components/base/CodemirrorFull.vue        | 21 ++++++--
 .../base/CodemirrorFullStatusBar.vue          | 37 ++++++++++++++
 .../base/CodemirrorFullStatusBarSelection.vue | 49 +++++++++++++++++++
 src/model/lab.ts                              | 13 +++--
 4 files changed, 112 insertions(+), 8 deletions(-)
 create mode 100644 src/components/base/CodemirrorFullStatusBar.vue
 create mode 100644 src/components/base/CodemirrorFullStatusBarSelection.vue

diff --git a/src/components/base/CodemirrorFull.vue b/src/components/base/CodemirrorFull.vue
index 18a66a80..e4ea7931 100644
--- a/src/components/base/CodemirrorFull.vue
+++ b/src/components/base/CodemirrorFull.vue
@@ -5,6 +5,8 @@ import { EditorState, Extension } from '@codemirror/state'
 import { keymap } from '@codemirror/view'
 import { basicSetup } from 'codemirror'
 import { dracula } from '@ddietr/codemirror-themes/dracula.js'
+import { ref } from 'vue'
+import CodemirrorFullStatusBar from '@/components/base/CodemirrorFullStatusBar.vue'
 
 const props = withDefaults(
     defineProps<{
@@ -12,11 +14,13 @@ const props = withDefaults(
         additionalExtensions?: Extension[]
         placeholder?: string
         readOnly?: boolean,
-        disabled?: boolean
+        disabled?: boolean,
+        statusBar?: boolean
     }>(),
     {
         readOnly: false,
         disabled: false,
+        statusBar: true,
         additionalExtensions: () => []
     }
 )
@@ -43,18 +47,24 @@ const extensions: Extension[] = [
 if (props.readOnly) {
     extensions.push(EditorState.readOnly.of(true))
 }
+
+const state = ref<EditorState>()
 </script>
 
 <template>
-    <div class="cm-full">
+    <div :class="['cm-full', { 'cm-full--with-status-bar': statusBar }]">
         <Codemirror
             :model-value="modelValue"
             :extensions="extensions"
             :placeholder="placeholder"
             :disabled="disabled"
+            @update="state = $event.state"
             @update:model-value="$emit('update:modelValue', $event)"
             style="height: 100%; cursor: text;"
         />
+        <VSheet v-if="statusBar" class="status-bar">
+            <CodemirrorFullStatusBar :state="state" />
+        </VSheet>
     </div>
 </template>
 
@@ -65,6 +75,11 @@ if (props.readOnly) {
     left: 0;
     right: 0;
     top: 0;
-    bottom: 0;
+    bottom: 2rem;
+}
+
+.status-bar {
+    display: flex;
+    justify-content: right;
 }
 </style>
diff --git a/src/components/base/CodemirrorFullStatusBar.vue b/src/components/base/CodemirrorFullStatusBar.vue
new file mode 100644
index 00000000..5024396a
--- /dev/null
+++ b/src/components/base/CodemirrorFullStatusBar.vue
@@ -0,0 +1,37 @@
+<script setup lang="ts">
+/**
+ * Render the status bar of a single editor with info like selection, spaces, and so on.
+ */
+
+import { EditorState } from '@codemirror/state'
+import CodemirrorFullStatusBarSelection from '@/components/base/CodemirrorFullStatusBarSelection.vue'
+
+const props = defineProps<{
+    state?: EditorState
+}>()
+</script>
+
+<template>
+    <div v-if="state" class="status-bar">
+        <span v-if="state.selection.ranges.length > 1">
+            {{ state.selection.ranges.length }} selections
+        </span>
+        <span v-else-if="state.selection.ranges.length === 1">
+            <CodemirrorFullStatusBarSelection :doc="state.doc" :selection-range="state.selection.ranges[0]" />
+        </span>
+
+        <span class="text-no-wrap">
+            {{state.tabSize}} spaces
+        </span>
+    </div>
+</template>
+
+<style lang="scss" scoped>
+.status-bar {
+    height: 2rem;
+    display: flex;
+    column-gap: 1rem;
+    align-items: center;
+    padding: 0 0.5rem;
+}
+</style>
diff --git a/src/components/base/CodemirrorFullStatusBarSelection.vue b/src/components/base/CodemirrorFullStatusBarSelection.vue
new file mode 100644
index 00000000..4e546fe5
--- /dev/null
+++ b/src/components/base/CodemirrorFullStatusBarSelection.vue
@@ -0,0 +1,49 @@
+<script setup lang="ts">
+/**
+ * Render detailed info about the current text selection.
+ */
+
+import { Text, SelectionRange, Line } from '@codemirror/state'
+import { computed } from 'vue'
+
+const props = defineProps<{
+    doc: Text,
+    selectionRange: SelectionRange
+}>()
+
+const headLine = computed<Line>(() => {
+    return props.doc.lineAt(props.selectionRange.head)
+})
+const anchorLine = computed<Line>(() => {
+    return props.doc.lineAt(props.selectionRange.anchor)
+})
+
+const headPositionInLine = computed<number>(() => {
+    return props.selectionRange.head - headLine.value.from + 1
+})
+const selectedCharsCount = computed<number>(() => {
+    if (props.selectionRange.empty) {
+        return 0
+    }
+    return Math.abs(props.selectionRange.anchor - props.selectionRange.head)
+})
+const selectedLinesCount = computed<number>(() => {
+    if (props.selectionRange.empty) {
+        return 0
+    }
+    return Math.abs(anchorLine.value.number - headLine.value.number)
+})
+</script>
+
+<template>
+    <span class="text-no-wrap">
+        Ln {{ headLine.number }}, Col {{ headPositionInLine }}
+        <template v-if="!selectionRange.empty">
+            ({{ selectedCharsCount }} chars<template v-if="selectedLinesCount">, {{ selectedLinesCount }} line breaks</template>)
+        </template>
+    </span>
+</template>
+
+<style lang="scss" scoped>
+
+</style>
diff --git a/src/model/lab.ts b/src/model/lab.ts
index e5813e1c..916516f1 100644
--- a/src/model/lab.ts
+++ b/src/model/lab.ts
@@ -12,11 +12,11 @@ export class EvitaDBConnection {
     readonly id: EvitaDBConnectionId
     readonly name: string
     readonly preconfigured: boolean
-    readonly labApiUrl: string
-    readonly restUrl: string
-    readonly gqlUrl: string
+    readonly labApiUrl?: string
+    readonly restUrl?: string
+    readonly gqlUrl?: string
 
-    constructor(id: EvitaDBConnectionId | undefined, name: string, preconfigured: boolean, labApiUrl: string, restUrl: string, gqlUrl: string) {
+    constructor(id: EvitaDBConnectionId | undefined, name: string, preconfigured: boolean, labApiUrl?: string, restUrl?: string, gqlUrl?: string) {
         this.id = id ? id : uuidv4()
         this.name = name
         this.preconfigured = preconfigured
@@ -29,7 +29,10 @@ export class EvitaDBConnection {
         return new EvitaDBConnection(json.id, json.name, preconfigured, json.labApiUrl, json.restUrl, json.gqlUrl)
     }
 
-    private normalizeApiUrl(url: string): string {
+    private normalizeApiUrl(url: string | undefined): string | undefined {
+        if (url == undefined) {
+            return undefined
+        }
         return url.endsWith('/') ? url.substring(0, url.length - 1) : url
     }
 }