Core review docs fixes.

src/form/components/ForisForm.md

@@ -0,0 +1,73 @@
+`<ForisForm/>` is Higher-Order Component which encapsulates entire form logic and provides with children required props.
+This component structure provides comfort API and allows to create typical Foris module forms easily.
+
+## Example of usage of `<ForisForm/>`
+You can pass more forms as children.
+```js
+<ForisForm
+    ws={ws}
+    forisConfig={{
+        endpoint: API_URLs.wan,
+        wsModule: "wan",
+    }}
+    prepData={prepData}
+    prepDataToSubmit={prepDataToSubmit}
+    validator={validator}
+>
+    <WANForm />
+    <WAN6Form />
+    <MACForm />
+</ForisForm>
+```
+
+### Example of children forms `props` usage
+
+```js
+export default function MACForm({
+    formData, formErrors, setFormValue, ...props
+}) {
+    const macSettings = formData.mac_settings;
+    const errors = (formErrors || {}).mac_settings || {};
+    return (
+        <>
+            <h3>{_("MAC")}</h3>
+            <CheckBox
+                label={_("Custom MAC address")}
+                checked={macSettings.custom_mac_enabled}
+                helpText={HELP_TEXTS.custom_mac_enabled}
+
+                onChange={setFormValue(
+                    (value) => ({ mac_settings: { custom_mac_enabled: { $set: value } } }),
+                )}
+
+                {...props}
+            />
+            {macSettings.custom_mac_enabled
+                ? (
+                    <TextInput
+                        label={_("MAC address")}
+                        value={macSettings.custom_mac || ""}
+                        helpText={HELP_TEXTS.custom_mac}
+                        error={errors.custom_mac}
+                        required
+
+                        onChange={setFormValue(
+                            (value) => ({ mac_settings: { custom_mac: { $set: value } } }),
+                        )}
+
+                        {...props}
+                    />
+                )
+                : null}
+        </>
+    );
+}
+```
+The <ForisForm/> passes subsequent `props` to the child components.
+
+| Prop           | Type   | Description                                                                |
+|----------------|--------|----------------------------------------------------------------------------|
+| `formData`     | object | Data returned from API.                                                    |
+| `formErrors`   | object | Errors returned after validation via validator.                            |
+| `setFormValue` | func   | Function for data update. It takes update rule as arg (see example above). |
+| `disabled`     | bool   | Flag to disable form elements (during updates or loadings e.t.c.).         |