@yyasinaslan/easyform
Version:
Angular Easy Form
230 lines • 29.7 kB
JavaScript
import { FormArray, FormControl, FormGroup } from "@angular/forms";
import { AdvancedControlTypes } from "./interfaces/advanced-control-types";
import { EasyFormGenerator } from "./easy-form-generator";
import { EasyFormField } from "./easy-form-field";
export class EasyForm extends EasyFormGenerator {
constructor(schema, options) {
super();
// default options
this.options = {
showErrors: 'submitted',
components: {}
};
this.schema = schema;
this.options = { ...this.options, ...options };
this.formGroup = this.createFormGroup(this.schema);
}
get invalid() {
return this.formGroup.invalid;
}
get valid() {
return this.formGroup.valid;
}
get value() {
return this.formGroup.value;
}
get valueChanges() {
return this.formGroup.valueChanges;
}
/**
* Create a new instance of EasyForm
* @param schema
* @param options
*/
static create(schema, options) {
return new EasyForm(schema, options);
}
/**
* Traverse through schema and get definition
* @param path
*/
getSchema(path) {
const normalisedPath = typeof path == 'string' ? path.split('.') : path;
if (!path || path.length == 0) {
return null;
}
return this._getSchemaWithPath(normalisedPath, this.schema);
}
/**
* Disable all form
*/
disable() {
this.formGroup.disable();
}
/**
* Enable all form
*/
enable() {
this.formGroup.enable();
}
getComponentType(type) {
if (!this.options.components) {
return null;
}
const c = this.options.components[type];
if (!c) {
return null;
}
return c;
}
getControl(path) {
return this.formGroup.get(path);
}
getArrayControls(path) {
const arrayControl = this.getControl(path);
if (!arrayControl)
return [];
return arrayControl.controls;
}
getValue(path) {
if (path) {
return this.formGroup.get(path)?.value;
}
return this.formGroup.value;
}
getRawValue(path) {
if (path) {
return this.formGroup.get(path)?.getRawValue();
}
return this.formGroup.getRawValue();
}
setValue(value, path) {
if (path) {
this.formGroup.get(path)?.setValue(value);
return;
}
this.formGroup.setValue(value);
}
patchValue(value, path) {
if (path) {
this.formGroup.get(path)?.patchValue(value);
return;
}
this.formGroup.patchValue(value);
}
addToArray(path, value) {
const arr = this.formGroup.get(path);
const schema = this.getSchema(path);
if (!schema) {
throw new Error(`Cannot find form schema for ${path}`);
}
if (!arr) {
throw new Error(`Cannot find form array for ${path}`);
}
if (schema.controlType === AdvancedControlTypes.Array) {
const g = this.createFormGroup(schema.schema, value);
arr.push(g);
}
else if (schema.controlType === AdvancedControlTypes.ArraySimple) {
const arrayField = schema.schema;
const validations = arrayField.validations ?? {};
const control = new FormControl(value, this.createValidations(validations));
arr.push(control);
}
}
removeFromArray(path, index) {
const arr = this.formGroup.get(path);
if (arr) {
arr.removeAt(index);
}
}
createFormGroup(schema, initialValue, validations) {
const group = new FormGroup({});
for (const key in schema) {
const field = schema[key];
if (field.controlType == 'group') {
const g = this.createFormGroup(field.schema, field.initialValue, field.validations);
group.addControl(key, g);
}
else if (field.controlType == 'array') {
const a = this.createFormArray(field.schema, field.initialValue, field.validations);
group.addControl(key, a);
}
else if (field.controlType == 'arraySimple') {
const a = this.createSimpleFormArray(field, field.initialValue, field.validations);
group.addControl(key, a);
}
else {
const control = new FormControl(field.initialValue, field.validations ? this.createValidations(field.validations) : []);
group.addControl(key, control);
}
}
if (validations) {
group.addValidators(this.createValidations(validations));
}
if (initialValue) {
group.patchValue(initialValue);
}
return group;
}
createFormArray(schema, initialValue, validations) {
const array = new FormArray([]);
if (initialValue && Array.isArray(initialValue)) {
initialValue.forEach((item) => {
const group = this.createFormGroup(schema);
group.patchValue(item);
array.push(group);
});
}
if (validations) {
array.addValidators(this.createValidations(validations));
}
return array;
}
createSimpleFormArray(schema, initialValue, validations) {
const array = new FormArray([]);
const field = schema.schema;
if (initialValue && Array.isArray(initialValue)) {
initialValue.forEach((item, index) => {
const control = new FormControl(item, field.validations ? this.createValidations(field.validations) : []);
array.push(control);
});
}
if (validations) {
array.addValidators(this.createValidations(validations));
}
return array;
}
createValidations(validations) {
const validators = [];
if (validations) {
for (const validationKey in validations) {
const v = validations[validationKey];
validators.push(v.validator);
}
}
return validators;
}
_getSchemaWithPath(path, schema) {
const head = path[0];
const tail = path.slice(1);
const hasIndex = !!head.toString().match(/^[0-9]+/);
if (hasIndex) {
if (schema instanceof EasyFormField) {
return schema ?? null;
}
else {
if (tail.length == 0) {
return schema ?? null;
}
else {
return this._getSchemaWithPath(tail, schema);
}
}
}
if (schema instanceof EasyFormField) {
return schema.schema ?? null;
}
const childSchema = schema[head.toString()];
if (childSchema) {
if (tail.length == 0) {
return childSchema;
}
else {
return this._getSchemaWithPath(tail, childSchema.schema ?? {});
}
}
return null;
}
}
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{FormSchema} from \"./interfaces/form-schema\";\r\nimport {Validation} from \"./interfaces/validation\";\r\nimport {Signal} from \"@angular/core\";\r\nimport {Observable} from \"rxjs\";\r\nimport {FormArray, FormControl, FormGroup} from \"@angular/forms\";\r\nimport {BasicControlTypes} from \"./interfaces/basic-control-types\";\r\nimport {AdvancedControlTypes} from \"./interfaces/advanced-control-types\";\r\nimport {EasyFormGenerator} from \"./easy-form-generator\";\r\nimport {EasyFormControlComponent, LazyLoadingComponent} from \"./tokens/easy-form-config\";\r\nimport {EasyFormField} from \"./easy-form-field\";\r\n\r\nexport interface EasyFormOptions {\r\n  showErrors?: 'submitted' | 'touched' | 'dirty' | 'always' | 'never';\r\n  // Form based validations\r\n\r\n  validations?: Record<string, Validation>;\r\n  // Disabled state of the form\r\n\r\n  disabled?: boolean | Signal<boolean> | Observable<boolean>;\r\n  // Form field components\r\n\r\n  components?: Record<string, EasyFormControlComponent | LazyLoadingComponent>\r\n}\r\n\r\nexport type InferValueType<Schema extends FormSchema> = { [key in keyof Schema]: Schema[key]['initialValue'] };\r\n\r\nexport class EasyForm<ValueType = any> extends EasyFormGenerator {\r\n\r\n  /**\r\n   * Reactivity of actual form is managed by angular reactive form\r\n   */\r\n  public formGroup: FormGroup;\r\n\r\n  public schema!: FormSchema<ValueType>;\r\n  // default options\r\n  public options: EasyFormOptions = {\r\n    showErrors: 'submitted',\r\n    components: {}\r\n  };\r\n\r\n  constructor(schema: FormSchema<ValueType>, options?: EasyFormOptions) {\r\n    super();\r\n    this.schema = schema;\r\n    this.options = {...this.options, ...options};\r\n    this.formGroup = this.createFormGroup(this.schema);\r\n  }\r\n\r\n  get invalid() {\r\n    return this.formGroup.invalid;\r\n  }\r\n\r\n  get valid() {\r\n    return this.formGroup.valid;\r\n  }\r\n\r\n  get value(): ValueType {\r\n    return this.formGroup.value;\r\n  }\r\n\r\n  get valueChanges(): Observable<ValueType> {\r\n    return this.formGroup.valueChanges;\r\n  }\r\n\r\n  /**\r\n   * Create a new instance of EasyForm\r\n   * @param schema\r\n   * @param options\r\n   */\r\n  public static create<T = any>(schema: FormSchema<T>, options?: EasyFormOptions) {\r\n    return new EasyForm<T>(schema, options);\r\n  }\r\n\r\n  /**\r\n   * Traverse through schema and get definition\r\n   * @param path\r\n   */\r\n  getSchema(path: string | Array<string | number>) {\r\n    const normalisedPath = typeof path == 'string' ? path.split('.') : path;\r\n    if (!path || path.length == 0) {\r\n      return null;\r\n    }\r\n    return this._getSchemaWithPath(normalisedPath, this.schema);\r\n  }\r\n\r\n  /**\r\n   * Disable all form\r\n   */\r\n  disable() {\r\n    this.formGroup.disable()\r\n  }\r\n\r\n  /**\r\n   * Enable all form\r\n   */\r\n  enable() {\r\n    this.formGroup.enable()\r\n  }\r\n\r\n  getComponentType(type: BasicControlTypes | string) {\r\n    if (!this.options.components) {\r\n      return null;\r\n    }\r\n    const c = this.options.components[type];\r\n    if (!c) {\r\n      return null;\r\n    }\r\n    return c;\r\n  }\r\n\r\n  getControl<ControlType = FormControl>(path: string | Array<string | number>) {\r\n    return this.formGroup.get(path) as ControlType;\r\n  }\r\n\r\n  getArrayControls(path: string | Array<string | number>) {\r\n    const arrayControl = this.getControl<FormArray>(path);\r\n    if (!arrayControl) return [];\r\n    return arrayControl.controls as FormControl[];\r\n  }\r\n\r\n  getValue<ValueType = any>(path?: string | Array<string | number>): ValueType {\r\n    if (path) {\r\n      return this.formGroup.get(path)?.value;\r\n    }\r\n    return this.formGroup.value;\r\n  }\r\n\r\n  getRawValue<ValueType = any>(path?: string | Array<string | number>): ValueType {\r\n    if (path) {\r\n      return this.formGroup.get(path)?.getRawValue();\r\n    }\r\n    return this.formGroup.getRawValue();\r\n  }\r\n\r\n  setValue(value: any, path?: string | Array<string | number>) {\r\n    if (path) {\r\n      this.formGroup.get(path)?.setValue(value);\r\n      return;\r\n    }\r\n    this.formGroup.setValue(value);\r\n  }\r\n\r\n  patchValue(value: any, path?: string | Array<string | number>) {\r\n    if (path) {\r\n      this.formGroup.get(path)?.patchValue(value);\r\n      return;\r\n    }\r\n    this.formGroup.patchValue(value);\r\n  }\r\n\r\n  addToArray(path: string, value: any) {\r\n    const arr = this.formGroup.get(path) as FormArray;\r\n    const schema = this.getSchema(path);\r\n    if (!schema) {\r\n      throw new Error(`Cannot find form schema for ${path}`);\r\n    }\r\n    if (!arr) {\r\n      throw new Error(`Cannot find form array for ${path}`);\r\n    }\r\n\r\n    if (schema.controlType === AdvancedControlTypes.Array) {\r\n      const g = this.createFormGroup(schema.schema as Record<string, EasyFormField>, value);\r\n      arr.push(g);\r\n    } else if (schema.controlType === AdvancedControlTypes.ArraySimple) {\r\n      const arrayField = schema.schema as EasyFormField;\r\n      const validations = arrayField.validations ?? {};\r\n      const control = new FormControl(value, this.createValidations(validations));\r\n      arr.push(control);\r\n    }\r\n\r\n  }\r\n\r\n  removeFromArray(path: string, index: any) {\r\n    const arr = this.formGroup.get(path) as FormArray;\r\n    if (arr) {\r\n      arr.removeAt(index)\r\n    }\r\n  }\r\n\r\n  private createFormGroup(schema: FormSchema, initialValue?: any, validations?: EasyFormField['validations']): FormGroup {\r\n    const group = new FormGroup({});\r\n\r\n    for (const key in schema) {\r\n      const field = schema[key];\r\n      if (field.controlType == 'group') {\r\n        const g = this.createFormGroup(field.schema as Record<string, EasyFormField>, field.initialValue, field.validations);\r\n        group.addControl(key, g);\r\n      } else if (field.controlType == 'array') {\r\n        const a = this.createFormArray(field.schema as Record<string, EasyFormField>, field.initialValue, field.validations);\r\n        group.addControl(key, a);\r\n      } else if (field.controlType == 'arraySimple') {\r\n        const a = this.createSimpleFormArray(field as any, field.initialValue, field.validations);\r\n        group.addControl(key, a);\r\n      } else {\r\n        const control = new FormControl(field.initialValue, field.validations ? this.createValidations(field.validations) : []);\r\n        group.addControl(key, control);\r\n      }\r\n    }\r\n\r\n    if (validations) {\r\n      group.addValidators(this.createValidations(validations));\r\n    }\r\n\r\n    if (initialValue) {\r\n      group.patchValue(initialValue);\r\n    }\r\n\r\n    return group;\r\n  }\r\n\r\n  private createFormArray(schema: FormSchema, initialValue?: any, validations?: EasyFormField['validations']): FormArray {\r\n    const array = new FormArray<any>([]);\r\n\r\n    if (initialValue && Array.isArray(initialValue)) {\r\n      initialValue.forEach((item: any) => {\r\n        const group = this.createFormGroup(schema);\r\n        group.patchValue(item);\r\n        array.push(group);\r\n      });\r\n    }\r\n\r\n    if (validations) {\r\n      array.addValidators(this.createValidations(validations));\r\n    }\r\n\r\n    return array;\r\n  }\r\n\r\n  private createSimpleFormArray(schema: EasyFormField, initialValue?: any, validations?: EasyFormField['validations']): FormArray {\r\n    const array = new FormArray<any>([]);\r\n    const field = schema.schema as EasyFormField;\r\n\r\n    if (initialValue && Array.isArray(initialValue)) {\r\n      initialValue.forEach((item: any, index) => {\r\n        const control = new FormControl(item, field.validations ? this.createValidations(field.validations) : []);\r\n        array.push(control);\r\n      });\r\n    }\r\n\r\n    if (validations) {\r\n      array.addValidators(this.createValidations(validations));\r\n    }\r\n\r\n    return array;\r\n  }\r\n\r\n  private createValidations(validations: Record<string, Validation>) {\r\n    const validators = [];\r\n    if (validations) {\r\n      for (const validationKey in validations) {\r\n        const v = validations[validationKey];\r\n        validators.push(v.validator);\r\n      }\r\n    }\r\n    return validators;\r\n  }\r\n\r\n  private _getSchemaWithPath(path: (string | number)[], schema: FormSchema | EasyFormField): FormSchema | EasyFormField | null {\r\n    const head = path[0];\r\n    const tail = path.slice(1)\r\n\r\n    const hasIndex = !!head.toString().match(/^[0-9]+/);\r\n    if (hasIndex) {\r\n      if (schema instanceof EasyFormField) {\r\n        return schema ?? null;\r\n      } else {\r\n        if (tail.length == 0) {\r\n          return schema ?? null;\r\n        } else {\r\n          return this._getSchemaWithPath(tail, schema);\r\n        }\r\n      }\r\n    }\r\n\r\n\r\n    if (schema instanceof EasyFormField) {\r\n      return schema.schema ?? null;\r\n    }\r\n\r\n    const childSchema = (schema as Record<string, EasyFormField>)[head.toString()];\r\n    if (childSchema) {\r\n      if (tail.length == 0) {\r\n        return childSchema;\r\n      } else {\r\n        return this._getSchemaWithPath(tail, childSchema.schema ?? {});\r\n      }\r\n    }\r\n\r\n    return null;\r\n  }\r\n}\r\n"]}