Initial RDF forms component

.gitignore

@@ -1,6 +1,7 @@
 node_modules
 dist
 src/versionInfo.ts
+src/types/custom-elements.d.ts
 .idea
 .vscode
 coverage

src/components/combobox/Combobox.ts

@@ -56,6 +56,9 @@ export default class Combobox extends FormControlComponent {
   @query('input')
   protected accessor controlElement: HTMLInputElement | null = null
 
+  @property({ type: Boolean, reflect: true })
+  accessor readonly = false
+
   @state()
   private accessor filter = ''
 

src/components/input/Input.styles.css

@@ -23,5 +23,12 @@
             color: var(--solid-ui-color-gray-700);
             font-size: inherit;
         }
+
+        input:read-only {
+            border: none;
+            padding: 0;
+            cursor: not-allowed;
+        }
     }
+
 }

src/components/input/Input.ts

@@ -11,6 +11,15 @@ export default class Input extends FormControlComponent {
   @property({ type: String, reflect: true })
   accessor type = 'text';
 
+  @property({ type: String, reflect: true })
+  accessor placeholder = '';
+
+  @property({ type: Boolean, reflect: true })
+  accessor required = false;
+
+  @property({ type: Boolean, reflect: true })
+  accessor readonly = false;
+
   @query('input')
   protected accessor controlElement: HTMLInputElement | null = null;
 
@@ -26,6 +35,7 @@ export default class Input extends FormControlComponent {
           placeholder=${this.placeholder}
           ?required=${this.required}
           .value=${this.value}
+          ?readonly=${this.readonly}
           @input=${() => this.controlTrait.onInput()}
           @keydown=${this.onKeyDown}
         />

src/components/rdf-form/RDFForm.ts

@@ -0,0 +1,171 @@
+import { property, state } from 'lit/decorators.js'
+import { html } from 'lit/html.js'
+import type { PropertyValues } from 'lit'
+import { consume } from '@lit/context'
+import { customElement, WebComponent } from '@/lib/components'
+import ns from '../../lib/ns'
+import { fetchData, findForm, sortBySequence } from '../../lib/forms/rdfFormsHelper'
+import { sym, LiveStore } from 'rdflib'
+import '@/components/rdf-input'
+import { DEFAULT_STORE, storeContext, StoreContext } from '@/lib/forms/store/StoreContext'
+
+const urlConverter = {
+  fromAttribute (value: string | null): URL | null {
+    if (!value) return null
+
+    try {
+      return new URL(value)
+    } catch {
+      return null
+    }
+  },
+  toAttribute (value: URL | null) {
+    if (!value) return null
+    return value
+  }
+}
+
+const hrefFromUrlValue = (value: URL | null): string =>
+  value?.href ?? ''
+
+@customElement('solid-ui-rdf-form')
+export default class RDFForm extends WebComponent {
+    @consume({ context: storeContext, subscribe: true })
+    private accessor storeContext: StoreContext = DEFAULT_STORE
+
+    @property({ attribute: false })
+    accessor passedInStore: LiveStore | null = null
+
+    private get currentStore (): LiveStore {
+      return this.passedInStore ?? this.storeContext.store
+    }
+
+    @state()
+    private accessor entireDataIsReadonly: boolean = true // to protect data, we default to not editable
+
+    @state()
+    private accessor _loadVersion = 0
+
+    @state()
+    private accessor _documentsLoaded = false
+
+    @property({ converter: urlConverter })
+    accessor formUrl: URL | null = null
+
+    @property({ converter: urlConverter })
+    accessor subjectUrl: URL | null = null
+
+    render () {
+      if (!this._documentsLoaded) {
+        return html``
+      }
+
+      const store = this.currentStore
+
+      const subjectUrl = hrefFromUrlValue(this.subjectUrl)
+      if (subjectUrl && store.updater?.editable(subjectUrl) !== undefined && store.updater?.editable(subjectUrl) !== false) {
+        this.entireDataIsReadonly = false
+      }
+
+      const formRoot = findForm(this.currentStore, hrefFromUrlValue(this.formUrl))                          // If there are more 'a ui:Form' elements in a form file
+      if (!formRoot) throw new Error('No ui:Form found in ' + hrefFromUrlValue(this.formUrl))
+
+      const formDocument = sym(hrefFromUrlValue(this.formUrl))                         // rdflib NamedNode for the document
+      const parts = store.each(formRoot, ns.ui('parts'), null, formDocument)
+      const partsBySequence = sortBySequence(store, parts)
+      const partItems = (partsBySequence || []).flatMap(item => {
+        if (item && typeof item === 'object' && 'elements' in item && Array.isArray((item as any).elements)) {
+          return (item as any).elements
+        }
+        return [item]
+      })
+      const uiFields = partItems.map(item => {
+        const types = store.each(item as any, ns.rdf('type'), null, formDocument)
+        const typeNode = types[0]
+        const value = typeNode ? ((typeNode as any).value || String(typeNode)) : ((item as any).value || String(item))
+        const hashIndex = value.lastIndexOf('#')
+        return {
+          value: item,
+          fieldValue: hashIndex >= 0 ? value.slice(hashIndex + 1) : value
+        }
+      })
+
+      return html`
+      <form>
+        ${uiFields.map(part => {
+          switch (part.fieldValue) {
+              case 'PhoneField':
+              case 'EmailField':
+              case 'ColorField':
+              case 'DateField':
+              case 'DateTimeField':
+              case 'TimeField':
+              case 'NumericField':
+              case 'IntegerField':
+              case 'DecimalField':
+              case 'FloatField':
+              case 'TextField':
+              case 'SingleLineTextField':
+              case 'NamedNodeURIField': {
+                return html` <solid-ui-rdf-input 
+                  .formSubject=${sym(part.value)} 
+                  .dataSubject=${sym(subjectUrl)}
+                  .storeVersion=${this._loadVersion}
+                  .readonly=${this.entireDataIsReadonly}
+                ></solid-ui-rdf-input>
+                <br>`
+              }
+              case 'MultiLineTextField':
+                  return html`<input .rdf=${part}></input>`
+              case 'BooleanField':
+                  return html`<input .rdf=${part}></input>`
+              case 'TristateField':
+                  return html`<input .rdf=${part}></input>`
+              case 'Classifier':
+                  return html`<input .rdf=${part}></input>`
+              case 'Choice':
+                  return html`<input .rdf=${part}></input>`
+              case 'Multiple':
+                  return html`<input .rdf=${part}></input>`
+              case 'Options':
+                  return html`<input .rdf=${part}></input>`
+              case 'AutocompleteField':
+                  return html`<input .rdf=${part}></input>`
+              case 'Comment':
+              case 'Heading':
+                  return html`<input .rdf=${part}></input>`
+              default:
+                  return html`<div>Unknown part type: ${part}</div>`
+          }
+        })}
+      </form>
+    `
+    }
+
+    protected override willUpdate (changedProperties: PropertyValues<this>) {
+      super.willUpdate(changedProperties)
+      if (changedProperties.has('formUrl') ||
+        changedProperties.has('subjectUrl') ||
+        changedProperties.has('passedInStore')
+      ) {
+        this.loadDocumentsIfNeeded()
+      }
+    }
+
+    private async loadDocumentsIfNeeded () {
+      const store = this.currentStore
+      const formUrl = hrefFromUrlValue(this.formUrl)
+      const subjectUrl = hrefFromUrlValue(this.subjectUrl)
+
+      if (!formUrl || !subjectUrl) return
+
+      try {
+        await fetchData(store, formUrl)
+        await fetchData(store, subjectUrl)
+        this._loadVersion += 1
+        this._documentsLoaded = true
+      } catch (error) {
+        console.error('Failed to load RDF documents', error)
+      }
+    }
+}

src/components/rdf-form/RDForm.stories.ts

@@ -0,0 +1,28 @@
+import { html } from 'lit'
+import './RDFForm'
+
+const meta = {
+  title: 'Design System/RDF Form',
+  args: {
+    formUrl: 'https://solidos.solidcommunity.net/public/2021/solidUiFormTestData/dummyFormTestFile.ttl', // we need a working URL
+    subjectUrl: 'https://solidos.solidcommunity.net/public/2021/alice.ttl#me'
+  },
+
+  argTypes: {
+    formUrl: { control: 'text' },
+    subjectUrl: { control: 'text' }
+  },
+} as const
+
+const render = ({ formUrl, subjectUrl }: typeof meta.args) => {
+  return html`
+      <solid-ui-rdf-form
+        formUrl=${formUrl}
+        .subjectUrl=${new URL(subjectUrl)}>
+      </solid-ui-rdf-form>
+    `
+}
+
+export default meta
+
+export const Primary = { render }

src/components/rdf-form/index.ts

@@ -0,0 +1,4 @@
+import RDFForm from './RDFForm'
+
+export { RDFForm }
+export default RDFForm