implement signature preview

app/javascript/elements/flow_area.js

@@ -1,5 +1,18 @@
 export default class extends HTMLElement {
   setValue (value) {
-    this.innerHTML = value
+    const { fieldType } = this.dataset
+
+    if (fieldType === 'signature') {
+      [...this.children].forEach(e => e.remove())
+
+      const img = document.createElement('img')
+
+      img.classList.add('w-full', 'h-full', 'object-contain')
+      img.src = value.url
+
+      this.append(img)
+    } else {
+      this.innerHTML = value
+    }
   }
 }

app/javascript/elements/flow_view.js

@@ -14,9 +14,13 @@ export default actionable(targetable(class extends HTMLElement {
   ]
 
   passValueToArea (e) {
+    this.areasSetValue(e.target.id, e.target.value)
+  }
+
+  areasSetValue (fieldUuid, value) {
     return (this.areas || []).forEach((area) => {
-      if (area.dataset.fieldUuid === e.target.id) {
-        area.setValue(e.target.value)
+      if (area.dataset.fieldUuid === fieldUuid) {
+        area.setValue(value)
       }
     })
   }
@@ -42,6 +46,8 @@ export default actionable(targetable(class extends HTMLElement {
       console.error('Error submitting form:', error)
     }).finally(() => {
       e.target.okButton.disabled = false
+
+      this.areasSetValue(e.target.closest('disable-hidden').dataset.fieldUuid, e.detail)
     })
   }
 
@@ -64,7 +70,7 @@ export default actionable(targetable(class extends HTMLElement {
   }
 
   moveStepBack (e) {
-    e.preventDefault()
+    e?.preventDefault()
 
     const currentStepIndex = this.steps.findIndex((el) => !el.classList.contains('hidden'))
 
@@ -75,7 +81,9 @@ export default actionable(targetable(class extends HTMLElement {
     }
   }
 
-  moveNextStep () {
+  moveNextStep (e) {
+    e?.preventDefault()
+
     const currentStepIndex = this.steps.findIndex((el) => !el.classList.contains('hidden'))
 
     const nextStep = this.steps[currentStepIndex + 1]
@@ -89,7 +97,7 @@ export default actionable(targetable(class extends HTMLElement {
   }
 
   focusField ({ target }) {
-    this.setVisibleStep(target.dataset.fieldUuid)
+    this.setVisibleStep(target.closest('flow-area').dataset.fieldUuid)
   }
 
   focusArea ({ target }) {

app/javascript/elements/signature_pad.js

@@ -9,7 +9,10 @@ export default actionable(targetable(class extends HTMLElement {
     'canvas',
     'input',
     'okButton',
-    'clearButton'
+    'image',
+    'clearButton',
+    'redrawButton',
+    'nextButton'
   ]
 
   connectedCallback () {
@@ -22,7 +25,7 @@ export default actionable(targetable(class extends HTMLElement {
     this.okButton.disabled = true
 
     this.canvas.toBlob((blob) => {
-      const file = new File([blob], 'signature.jpg', { type: 'image/jpg' })
+      const file = new File([blob], 'signature.png', { type: 'image/png' })
 
       new DirectUpload(
         file,
@@ -38,10 +41,23 @@ export default actionable(targetable(class extends HTMLElement {
           headers: { 'Content-Type': 'application/json' }
         }).then((resp) => resp.json()).then((attachment) => {
           this.input.value = attachment.uuid
-          this.dispatchEvent(new CustomEvent('upload', { details: attachment }))
+          this.dispatchEvent(new CustomEvent('upload', { detail: attachment }))
         })
       })
-    }, 'image/jpeg', 0.95)
+    }, 'image/png')
+  }
+
+  redraw (e) {
+    e?.preventDefault()
+
+    this.input.value = ''
+
+    this.canvas.classList.remove('hidden')
+    this.clearButton.classList.remove('hidden')
+    this.okButton.classList.remove('hidden')
+    this.image.remove()
+    this.redrawButton.remove()
+    this.nextButton.remove()
   }
 
   clear (e) {