refactor: reorganize all components (#8303)

src/form/Form.tsx

@@ -0,0 +1,190 @@
+import { PropType, defineComponent } from 'vue';
+
+// Utils
+import { createNamespace, ComponentInstance } from '../utils';
+
+// Composables
+import { useChildren } from '@vant/use';
+import { FORM_KEY } from '../composables/use-link-field';
+import { useExpose } from '../composables/use-expose';
+
+// Types
+import type {
+  FieldTextAlign,
+  FieldValidateError,
+  FieldValidateTrigger,
+} from '../field/types';
+
+const [name, bem] = createNamespace('form');
+
+export default defineComponent({
+  name,
+
+  props: {
+    colon: Boolean,
+    disabled: Boolean,
+    readonly: Boolean,
+    showError: Boolean,
+    labelWidth: [Number, String],
+    labelAlign: String as PropType<FieldTextAlign>,
+    inputAlign: String as PropType<FieldTextAlign>,
+    scrollToError: Boolean,
+    validateFirst: Boolean,
+    errorMessageAlign: String as PropType<FieldTextAlign>,
+    submitOnEnter: {
+      type: Boolean,
+      default: true,
+    },
+    validateTrigger: {
+      type: String as PropType<FieldValidateTrigger>,
+      default: 'onBlur',
+    },
+    showErrorMessage: {
+      type: Boolean,
+      default: true,
+    },
+  },
+
+  emits: ['submit', 'failed'],
+
+  setup(props, { emit, slots }) {
+    const { children, linkChildren } = useChildren<ComponentInstance>(FORM_KEY);
+
+    const getFieldsByNames = (names?: string[]) => {
+      if (names) {
+        return children.filter((field) => names.includes(field.name));
+      }
+      return children;
+    };
+
+    const validateSeq = (names?: string[]) =>
+      new Promise<void>((resolve, reject) => {
+        const errors: FieldValidateError[] = [];
+        const fields = getFieldsByNames(names);
+
+        fields
+          .reduce(
+            (promise, field) =>
+              promise.then(() => {
+                if (!errors.length) {
+                  return field.validate().then((error?: FieldValidateError) => {
+                    if (error) {
+                      errors.push(error);
+                    }
+                  });
+                }
+              }),
+            Promise.resolve()
+          )
+          .then(() => {
+            if (errors.length) {
+              reject(errors);
+            } else {
+              resolve();
+            }
+          });
+      });
+
+    const validateAll = (names?: string[]) =>
+      new Promise<void>((resolve, reject) => {
+        const fields = getFieldsByNames(names);
+        Promise.all(fields.map((item) => item.validate())).then((errors) => {
+          errors = errors.filter(Boolean);
+
+          if (errors.length) {
+            reject(errors);
+          } else {
+            resolve();
+          }
+        });
+      });
+
+    const validateField = (name: string) => {
+      const matched = children.find((item) => item.name === name);
+
+      if (matched) {
+        return new Promise<void>((resolve, reject) => {
+          matched.validate().then((error?: FieldValidateError) => {
+            if (error) {
+              reject(error);
+            } else {
+              resolve();
+            }
+          });
+        });
+      }
+
+      return Promise.reject();
+    };
+
+    const validate = (name?: string | string[]) => {
+      if (typeof name === 'string') {
+        return validateField(name);
+      }
+      return props.validateFirst ? validateSeq(name) : validateAll(name);
+    };
+
+    const resetValidation = (name?: string | string[]) => {
+      if (typeof name === 'string') {
+        name = [name];
+      }
+
+      const fields = getFieldsByNames(name);
+      fields.forEach((item) => {
+        item.resetValidation();
+      });
+    };
+
+    const scrollToField = (
+      name: string,
+      options?: boolean | ScrollIntoViewOptions
+    ) => {
+      children.some((item) => {
+        if (item.name === name) {
+          item.$el.scrollIntoView(options);
+          return true;
+        }
+        return false;
+      });
+    };
+
+    const getValues = () =>
+      children.reduce((form, field) => {
+        form[field.name] = field.formValue.value;
+        return form;
+      }, {} as Record<string, unknown>);
+
+    const submit = () => {
+      const values = getValues();
+
+      validate()
+        .then(() => emit('submit', values))
+        .catch((errors: FieldValidateError[]) => {
+          emit('failed', { values, errors });
+
+          if (props.scrollToError && errors[0].name) {
+            scrollToField(errors[0].name);
+          }
+        });
+    };
+
+    const onSubmit = (event: Event) => {
+      event.preventDefault();
+      submit();
+    };
+
+    linkChildren({ props });
+    useExpose({
+      submit,
+      validate,
+      scrollToField,
+      resetValidation,
+    });
+
+    return () => (
+      <form class={bem()} onSubmit={onSubmit}>
+        {slots.default?.()}
+      </form>
+    );
+  },
+});