1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
import {
AbstractControl,
AbstractControlOptions,
AsyncValidatorFn,
FormGroup,
NgForm,
ValidatorFn
} from '@angular/forms';
/**
* CdFormGroup extends FormGroup with a few new methods that will help form development.
*/
export class CdFormGroup extends FormGroup {
constructor(
public controls: { [key: string]: AbstractControl },
validatorOrOpts?: ValidatorFn | ValidatorFn[] | AbstractControlOptions | null,
asyncValidator?: AsyncValidatorFn | AsyncValidatorFn[] | null
) {
super(controls, validatorOrOpts, asyncValidator);
}
/**
* Get a control out of any control even if its nested in other CdFormGroups or a FormGroup
*/
get(controlName: string): AbstractControl {
const control = this._get(controlName);
if (!control) {
throw new Error(`Control '${controlName}' could not be found!`);
}
return control;
}
_get(controlName: string): AbstractControl {
return (
super.get(controlName) ||
Object.values(this.controls)
.filter((c) => c.get)
.map((form) => {
if (form instanceof CdFormGroup) {
return form._get(controlName);
}
return form.get(controlName);
})
.find((c) => Boolean(c))
);
}
/**
* Get the value of a control
*/
getValue(controlName: string): any {
return this.get(controlName).value;
}
/**
* Sets a control without triggering a value changes event
*
* Very useful if a function is called through a value changes event but the value
* should be changed within the call.
*/
silentSet(controlName: string, value: any) {
this.get(controlName).setValue(value, { emitEvent: false });
}
/**
* Indicates errors of the control in templates
*/
showError(controlName: string, form: NgForm, errorName?: string): boolean {
const control = this.get(controlName);
return (
(form.submitted || control.dirty) &&
(errorName ? control.hasError(errorName) : control.invalid)
);
}
}
|
