Fix year entry for date in forms

src/widgets/forms/basic.ts

@@ -136,6 +136,8 @@ export function basicField (
   ;(field as any).style = inputStyle
   rhs.appendChild(field)
   field.setAttribute('type', params.type ? params.type : 'text')
+  const fieldType = (field.getAttribute('type') || '').toLowerCase()
+  const deferWhileFocused = fieldType === 'date' || fieldType === 'datetime-local'
 
   const size = kb.anyJS(form, ns.ui('size')) || styleConstants.textInputSize || 20
   field.setAttribute('size', size)
@@ -189,9 +191,18 @@ export function basicField (
   field.addEventListener(
     'change',
     function (_e) {
+      if (deferWhileFocused && dom.activeElement === field) {
+        if (field.dataset) {
+          field.dataset.deferredChange = 'true'
+        }
+        return
+      }
       // i.e. lose focus with changed data
       if (params.pattern && !field.value.match(params.pattern)) return
-      field.disabled = true // See if this stops getting two dates from fumbling e.g the chrome datepicker.
+      const disabledForSave = !deferWhileFocused
+      if (disabledForSave) {
+        field.disabled = true // See if this stops getting two dates from fumbling e.g the chrome datepicker.
+      }
       field.setAttribute('style', inputStyle + 'color: gray;') // pending
       const ds = kb.statementsMatching(subject, property as any) // remove any multiple values
       let result
@@ -255,7 +266,9 @@ export function basicField (
       updateMany(ds, is as any, function (uri, ok, body) {
         // kb.updater.update(ds, is, function (uri, ok, body) {
         if (ok) {
-          field.disabled = false
+          if (disabledForSave) {
+            field.disabled = false
+          }
           field.setAttribute('style', inputStyle)
         } else {
           box.appendChild(errorMessageBlock(dom, body))
@@ -265,5 +278,20 @@ export function basicField (
     },
     true
   )
+  field.addEventListener(
+    'blur',
+    function (_e) {
+      if (
+        deferWhileFocused &&
+        field.dataset &&
+        field.dataset.deferredChange === 'true'
+      ) {
+        delete field.dataset.deferredChange
+        const event = new Event('change', { bubbles: true })
+        field.dispatchEvent(event)
+      }
+    },
+    true
+  )
   return box
 }

test/unit/widgets/forms/basic.test.ts

@@ -295,6 +295,126 @@ describe('basicField', () => {
     expect(store.updater.updated).toEqual(true)
   })
 
+  it('defers date change while focused', () => {
+    const container = document.createElement('div')
+    document.body.appendChild(container)
+    const already = {}
+    const subject = namedNode('http://example.com/#this')
+    const form = namedNode('http://example.com/#form')
+    const formType = ns.ui('DateField')
+    const property = namedNode('http://example.com/#some-property')
+    const doc = namedNode('http://example.com/')
+    const callbackFunction = jest.fn() // TODO: https://github.com/solidos/solid-ui/issues/263
+    store.add(form, ns.ui('property'), property, doc)
+    store.add(form, ns.rdf('type'), formType, doc)
+    store.add(subject, property, '2026-03-15', doc)
+
+    const originalUpdate = store.updater.update
+    const updateSpy = jest.fn((_deletes, _inserts, onDone) => {
+      onDone('uri', true, 'body')
+      return Promise.resolve()
+    })
+    store.updater.update = updateSpy as any
+
+    try {
+      const result = basicField(
+        document,
+        container,
+        already,
+        subject,
+        form,
+        doc,
+        callbackFunction
+      )
+      const inputElement = result.childNodes[1].childNodes[0] as HTMLInputElement
+      inputElement.focus()
+      inputElement.value = '2026-03-16'
+      inputElement.dispatchEvent(new Event('change'))
+      expect(updateSpy).not.toHaveBeenCalled()
+    } finally {
+      store.updater.update = originalUpdate
+      container.remove()
+    }
+  })
+
+  it('does not disable DateField during save', () => {
+    const container = document.createElement('div')
+    const already = {}
+    const subject = namedNode('http://example.com/#this')
+    const form = namedNode('http://example.com/#form')
+    const formType = ns.ui('DateField')
+    const property = namedNode('http://example.com/#some-property')
+    const doc = namedNode('http://example.com/')
+    const callbackFunction = jest.fn() // TODO: https://github.com/solidos/solid-ui/issues/263
+    store.add(form, ns.ui('property'), property, doc)
+    store.add(form, ns.rdf('type'), formType, doc)
+    store.add(subject, property, '2026-03-15', doc)
+
+    const result = basicField(
+      document,
+      container,
+      already,
+      subject,
+      form,
+      doc,
+      callbackFunction
+    )
+    const inputElement = result.childNodes[1].childNodes[0] as HTMLInputElement
+
+    const originalUpdate = store.updater.update
+    store.updater.update = ((_deletes, _inserts, onDone) => {
+      expect(inputElement.disabled).toEqual(false)
+      onDone('uri', true, 'body')
+      return Promise.resolve()
+    }) as any
+
+    try {
+      inputElement.value = '2026-03-16'
+      inputElement.dispatchEvent(new Event('change'))
+      expect(inputElement.disabled).toEqual(false)
+    } finally {
+      store.updater.update = originalUpdate
+    }
+  })
+
+  it('disables non-date input during save and reenables on success', () => {
+    const container = document.createElement('div')
+    const already = {}
+    const subject = namedNode('http://example.com/#this')
+    const form = namedNode('http://example.com/#form')
+    const property = namedNode('http://example.com/#some-property')
+    const doc = namedNode('http://example.com/')
+    const callbackFunction = jest.fn() // TODO: https://github.com/solidos/solid-ui/issues/263
+    store.add(form, ns.ui('property'), property, doc)
+    store.add(subject, property, namedNode('http://example.com/#initial-value'), doc)
+
+    const result = basicField(
+      document,
+      container,
+      already,
+      subject,
+      form,
+      doc,
+      callbackFunction
+    )
+    const inputElement = result.childNodes[1].childNodes[0] as HTMLInputElement
+
+    const originalUpdate = store.updater.update
+    store.updater.update = ((_deletes, _inserts, onDone) => {
+      expect(inputElement.disabled).toEqual(true)
+      onDone('uri', true, 'body')
+      return Promise.resolve()
+    }) as any
+
+    try {
+      inputElement.value = 'changed value'
+      inputElement.dispatchEvent(new Event('change'))
+      expect(inputElement.disabled).toEqual(false)
+    } finally {
+      store.updater.update = originalUpdate
+    }
+  })
+
   it('calls updater on change for a NamedNodeUriField', () => {
     const container = document.createElement('div')
     const already = {}