1 files changed, 83 insertions, 0 deletions
diff --git a/packages/web-util/src/forms/DefaultForm.tsx b/packages/web-util/src/forms/DefaultForm.tsx
new file mode 100644
index 000000000..1c635e089
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+++ b/packages/web-util/src/forms/DefaultForm.tsx
@@ -0,0 +1,83 @@
+import { Fragment, VNode, h } from "preact";
+import { FormProvider, FormProviderProps, FormState } from "./FormProvider.js";
+import { RenderAllFieldsByUiConfig, UIFormField } from "./forms.js";
+import { TranslatedString } from "@gnu-taler/taler-util";
+
+/**
+ * Flexible form uses a DoubleColumForm for design
+ * and may have a dynamic properties defined by 
+ * behavior function.
+ */
+export interface FlexibleForm<T extends object> {
+  design: DoubleColumnForm;
+  behavior?: (form: Partial<T>) => FormState<T>;
+}
+
+/**
+ * Double column form
+ * 
+ * Form with sections, every sections have a title and may
+ * have a description.
+ * Every sections contain a set of fields.
+ */
+export type DoubleColumnForm = Array<DoubleColumnFormSection | undefined>;
+
+export type DoubleColumnFormSection = {
+  title: TranslatedString;
+  description?: TranslatedString;
+  fields: UIFormField[];
+};
+
+/**
+ * Form Provider implementation that use FlexibleForm
+ * to defined behavior and fields.
+ */
+export function DefaultForm<T extends object>({
+  initial,
+  onUpdate,
+  form,
+  onSubmit,
+  children,
+  readOnly,
+}: Omit<FormProviderProps<T>, "computeFormState"> & { form: FlexibleForm<T> }): VNode {
+  return (
+    <FormProvider
+      initial={initial}
+      onUpdate={onUpdate}
+      onSubmit={onSubmit}
+      readOnly={readOnly}
+      computeFormState={form.behavior}
+    >
+      <div class="space-y-10 divide-y -mt-5 divide-gray-900/10">
+        {form.design.map((section, i) => {
+          if (!section) return <Fragment />;
+          return (
+            <div key={i} class="grid grid-cols-1 gap-x-8 gap-y-8 pt-5 md:grid-cols-3">
+              <div class="px-4 sm:px-0">
+                <h2 class="text-base font-semibold leading-7 text-gray-900">
+                  {section.title}
+                </h2>
+                {section.description && (
+                  <p class="mt-1 text-sm leading-6 text-gray-600">
+                    {section.description}
+                  </p>
+                )}
+              </div>
+              <div class="bg-white shadow-sm ring-1 ring-gray-900/5 rounded-md md:col-span-2">
+                <div class="p-3">
+                  <div class="grid max-w-2xl grid-cols-1 gap-x-6 gap-y-8 sm:grid-cols-6">
+                    <RenderAllFieldsByUiConfig
+                      key={i}
+                      fields={section.fields}
+                    />
+                  </div>
+                </div>
+              </div>
+            </div>
+          );
+        })}
+      </div>
+      {children}
+    </FormProvider>
+  );
+}