Add growing textarea component

src/components/Views/Edit.module.scss

@@ -77,10 +77,9 @@
 
   .titleInput,
   .subtitleInput {
-    border: 0;
-    outline: 0;
-    padding: 0;
     font-size: 36px;
+    line-height: 1.1;
+    margin-bottom: 1.2rem;
 
     &::placeholder {
       opacity: 0.3;
@@ -93,6 +92,8 @@
   }
 }
 
+//Grow input
+
 .editSettings,
 .edit {
   display: none;

src/components/Views/Edit.tsx

@@ -14,6 +14,7 @@ import { useSession } from '../../context/session'
 import { Modal } from '../Nav/Modal'
 import { hideModal, showModal } from '../../stores/ui'
 import { imageProxy } from '../../utils/imageProxy'
+import { GrowingTextarea } from '../_shared/GrowingTextarea'
 
 type EditViewProps = {
   shout: Shout
@@ -73,11 +74,10 @@ export const EditView = (props: EditViewProps) => {
     })
   })
 
-  const handleTitleInputChange = (e) => {
-    const title = e.currentTarget.value
-    setForm('title', title)
+  const handleTitleInputChange = (value) => {
+    setForm('title', value)
 
-    if (title) {
+    if (value) {
       setFormErrors('title', '')
     }
   }
@@ -139,30 +139,21 @@ export const EditView = (props: EditViewProps) => {
                   })}
                 >
                   <div class={styles.inputContainer}>
-                    <input
+                    <GrowingTextarea
+                      value={(value) => handleTitleInputChange(value)}
                       class={styles.titleInput}
-                      type="text"
-                      name="title"
-                      id="title"
                       placeholder={t('Header')}
-                      autocomplete="off"
-                      value={form.title}
-                      onInput={handleTitleInputChange}
+                      initialValue={form.title}
                     />
                     <Show when={formErrors.title}>
                       <div class={styles.validationError}>{formErrors.title}</div>
                     </Show>
                   </div>
-
-                  <input
+                  <GrowingTextarea
+                    value={(value) => setForm('subtitle', value)}
                     class={styles.subtitleInput}
-                    type="text"
-                    name="subtitle"
-                    id="subtitle"
-                    autocomplete="off"
                     placeholder={t('Subheader')}
-                    value={form.subtitle}
-                    onChange={(e) => setForm('subtitle', e.currentTarget.value)}
+                    initialValue={form.subtitle}
                   />
                   <Editor
                     shoutId={props.shout.id}

src/components/_shared/GrowingTextarea/GrowingTextarea.module.scss

@@ -0,0 +1,44 @@
+.GrowingTextarea {
+  display: block;
+  width: 100%;
+
+  .growWrap {
+    display: grid;
+    width: 100%;
+
+    &::after {
+      content: attr(data-replicated-value);
+      visibility: hidden;
+      transition: height 0.3s linear;
+    }
+
+    .textInput {
+      margin-bottom: 0;
+      border: none;
+      resize: none;
+      overflow: hidden;
+      &::placeholder {
+        color: #858585;
+      }
+
+      &:focus,
+      &:focus-visible,
+      &:active {
+        border: none;
+        outline: none;
+        box-shadow: none;
+      }
+    }
+
+    &::after,
+    & .textInput {
+      /* Identical styling required!! */
+      white-space: pre-wrap;
+      word-wrap: break-word;
+      overflow: hidden;
+      grid-area: 1 / 1 / 2 / 2;
+      width: 100%;
+      padding: 0;
+    }
+  }
+}

src/components/_shared/GrowingTextarea/GrowingTextarea.tsx

@@ -0,0 +1,44 @@
+import { clsx } from 'clsx'
+import styles from './GrowingTextarea.module.scss'
+import { createEffect, createSignal } from 'solid-js'
+
+type Props = {
+  class?: string
+  placeholder: string
+  initialValue?: string
+  value: (string) => void
+}
+
+export const GrowingTextarea = (props: Props) => {
+  const [value, setValue] = createSignal('')
+  const handleChangeValue = (event) => {
+    setValue(event.target.value)
+    props.value(event.target.value)
+  }
+
+  const handleKeyDown = async (event) => {
+    if (event.key === 'Enter' && event.shiftKey) {
+      return
+    }
+
+    if (event.key === 'Enter' && !event.shiftKey && value()?.trim().length > 0) {
+      event.preventDefault()
+    }
+  }
+
+  return (
+    <div class={clsx(styles.GrowingTextarea)}>
+      <div class={clsx(styles.growWrap, props.class)} data-replicated-value={value()}>
+        <textarea
+          rows={1}
+          autocomplete="off"
+          class={clsx(styles.textInput, props.class)}
+          value={props.initialValue}
+          onKeyDown={handleKeyDown}
+          onInput={(event) => handleChangeValue(event)}
+          placeholder={props.placeholder}
+        />
+      </div>
+    </div>
+  )
+}

src/components/_shared/GrowingTextarea/index.ts

@@ -0,0 +1 @@
+export { GrowingTextarea } from './GrowingTextarea'