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import {bootstrap} from 'angular2/bootstrap';
import {
FORM_DIRECTIVES,
NgControl,
Validators,
NgFormModel,
FormBuilder,
NgIf,
NgFor,
Component,
Directive,
View,
Host
} from 'angular2/core';
import {RegExpWrapper, print, isPresent} from 'angular2/src/core/facade/lang';
/**
* Custom validator.
*/
function creditCardValidator(c): StringMap<string, boolean> {
if (isPresent(c.value) && RegExpWrapper.test(new RegExp("^\\d{16}$"), c.value)) {
return null;
} else {
return {"invalidCreditCard": true};
}
}
/**
* This is a component that displays an error message.
*
* For instance,
*
* <show-error control="creditCard" [errors]="['required', 'invalidCreditCard']"></show-error>
*
* Will display the "is required" error if the control is empty, and "invalid credit card" if the
* control is not empty
* but not valid.
*
* In a real application, this component would receive a service that would map an error code to an
* actual error message.
* To make it simple, we are using a simple map here.
*/
@Component({selector: 'show-error', properties: ['controlPath: control', 'errorTypes: errors']})
@View({
template: `
<span *ng-if="errorMessage !== null">{{errorMessage}}</span>
`,
directives: [NgIf]
})
class ShowError {
formDir;
controlPath: string;
errorTypes: string[];
constructor(@Host() formDir: NgFormModel) { this.formDir = formDir; }
get errorMessage() {
var c = this.formDir.form.find(this.controlPath);
for (var i = 0; i < this.errorTypes.length; ++i) {
if (isPresent(c) && c.touched && c.hasError(this.errorTypes[i])) {
return this._errorMessage(this.errorTypes[i]);
}
}
return null;
}
_errorMessage(code) {
var config = {'required': 'is required', 'invalidCreditCard': 'is invalid credit card number'};
return config[code];
}
}
@Component({selector: 'model-driven-forms', viewBindings: [FormBuilder]})
@View({
template: `
<h1>Checkout Form (Model Driven)</h1>
<form (ng-submit)="onSubmit()" [ng-form-model]="form" #f="form">
<p>
<label for="firstName">First Name</label>
<input type="text" id="firstName" ng-control="firstName">
<show-error control="firstName" [errors]="['required']"></show-error>
</p>
<p>
<label for="middleName">Middle Name</label>
<input type="text" id="middleName" ng-control="middleName">
</p>
<p>
<label for="lastName">Last Name</label>
<input type="text" id="lastName" ng-control="lastName">
<show-error control="lastName" [errors]="['required']"></show-error>
</p>
<p>
<label for="country">Country</label>
<select id="country" ng-control="country">
<option *ng-for="#c of countries" [value]="c">{{c}}</option>
</select>
</p>
<p>
<label for="creditCard">Credit Card</label>
<input type="text" id="creditCard" ng-control="creditCard">
<show-error control="creditCard" [errors]="['required', 'invalidCreditCard']"></show-error>
</p>
<p>
<label for="amount">Amount</label>
<input type="number" id="amount" ng-control="amount">
<show-error control="amount" [errors]="['required']"></show-error>
</p>
<p>
<label for="email">Email</label>
<input type="email" id="email" ng-control="email">
<show-error control="email" [errors]="['required']"></show-error>
</p>
<p>
<label for="comments">Comments</label>
<textarea id="comments" ng-control="comments">
</textarea>
</p>
<button type="submit" [disabled]="!f.form.valid">Submit</button>
</form>
`,
directives: [FORM_DIRECTIVES, NgFor, ShowError]
})
class ModelDrivenForms {
form;
countries = ['US', 'Canada'];
constructor(fb: FormBuilder) {
this.form = fb.group({
"firstName": ["", Validators.required],
"middleName": [""],
"lastName": ["", Validators.required],
"country": ["Canada", Validators.required],
"creditCard": ["", Validators.compose([Validators.required, creditCardValidator])],
"amount": [0, Validators.required],
"email": ["", Validators.required],
"comments": [""]
});
}
onSubmit() {
print("Submitting:");
print(this.form.value);
}
}
export function main() {
bootstrap(ModelDrivenForms);
}