<!doctype html> <html class="no-js" lang=""> <head> <meta charset="utf-8"> <meta http-equiv="x-ua-compatible" content="ie=edge"> <title>CICADA</title> <meta name="description" content=""> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="icon" type="image/x-icon" href="../images/favicon.ico"> <link rel="stylesheet" href="../styles/style.css"> </head> <body> <div class="navbar navbar-default navbar-fixed-top visible-xs"> <a href="../" class="navbar-brand">CICADA</a> <button type="button" class="btn btn-default btn-menu ion-ios-menu" id="btn-menu"></button> </div> <div class="xs-menu menu" id="mobile-menu"> <div id="book-search-input" role="search"><input type="text" placeholder="Type to search"></div> <compodoc-menu></compodoc-menu> </div> <div class="container-fluid main"> <div class="row main"> <div class="hidden-xs menu"> <compodoc-menu mode="normal"></compodoc-menu> </div> <!-- START CONTENT --> <div class="content class"> <div class="content-data"> <ol class="breadcrumb"> <li>Classes</li> <li>CustomErrorStateMatcher</li> </ol> <ul class="nav nav-tabs" role="tablist"> <li class="active"> <a href="#info" role="tab" id="info-tab" data-toggle="tab" data-link="info">Info</a> </li> <li > <a href="#source" role="tab" id="source-tab" data-toggle="tab" data-link="source">Source</a> </li> </ul> <div class="tab-content"> <div class="tab-pane fade active in" id="c-info"> <p class="comment"> <h3>File</h3> </p> <p class="comment"> <code>src/app/_helpers/custom-error-state-matcher.ts</code> </p> <p class="comment"> <h3>Description</h3> </p> <p class="comment"> <p>Custom provider that defines how form controls behave with regards to displaying error messages.</p> </p> <p class="comment"> <h3>Implements</h3> </p> <p class="comment"> <code>ErrorStateMatcher</code> </p> <section> <h3 id="index">Index</h3> <table class="table table-sm table-bordered index-table"> <tbody> <tr> <td class="col-md-4"> <h6><b>Methods</b></h6> </td> </tr> <tr> <td class="col-md-4"> <ul class="index-list"> <li> <a href="#isErrorState">isErrorState</a> </li> </ul> </td> </tr> </tbody> </table> </section> <section> <h3 id="methods"> Methods </h3> <table class="table table-sm table-bordered"> <tbody> <tr> <td class="col-md-4"> <a name="isErrorState"></a> <span class="name"> <b> isErrorState </b> <a href="#isErrorState"><span class="icon ion-ios-link"></span></a> </span> </td> </tr> <tr> <td class="col-md-4"> <code>isErrorState(control: FormControl | null, form: FormGroupDirective | NgForm | null)</code> </td> </tr> <tr> <td class="col-md-4"> <div class="io-line">Defined in <a href="" data-line="17" class="link-to-prism">src/app/_helpers/custom-error-state-matcher.ts:17</a></div> </td> </tr> <tr> <td class="col-md-4"> <div class="io-description"><p>Checks whether an invalid input has been made and an error should be made.</p> </div> <div class="io-description"> <b>Parameters :</b> <table class="params"> <thead> <tr> <td>Name</td> <td>Type</td> <td>Optional</td> <td>Description</td> </tr> </thead> <tbody> <tr> <td>control</td> <td> <code>FormControl | null</code> </td> <td> No </td> <td> <ul> <li>Tracks the value and validation status of an individual form control.</li> </ul> </td> </tr> <tr> <td>form</td> <td> <code>FormGroupDirective | NgForm | null</code> </td> <td> No </td> <td> <ul> <li>Binding of an existing FormGroup to a DOM element.</li> </ul> </td> </tr> </tbody> </table> </div> <div> </div> <div class="io-description"> <b>Returns : </b> <code><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/boolean" target="_blank" >boolean</a></code> </div> <div class="io-description"> <p>true - If an invalid input has been made to the form control.</p> </div> </td> </tr> </tbody> </table> </section> </div> <div class="tab-pane fade tab-source-code" id="c-source"> <pre class="line-numbers compodoc-sourcecode"><code class="language-typescript">import { ErrorStateMatcher } from '@angular/material/core'; import { FormControl, FormGroupDirective, NgForm } from '@angular/forms'; /** * Custom provider that defines how form controls behave with regards to displaying error messages. * */ export class CustomErrorStateMatcher implements ErrorStateMatcher { /** * Checks whether an invalid input has been made and an error should be made. * * @param control - Tracks the value and validation status of an individual form control. * @param form - Binding of an existing FormGroup to a DOM element. * @returns true - If an invalid input has been made to the form control. */ isErrorState(control: FormControl | null, form: FormGroupDirective | NgForm | null): boolean { const isSubmitted: boolean = form && form.submitted; return !!(control && control.invalid && (control.dirty || control.touched || isSubmitted)); } } </code></pre> </div> </div> </div><div class="search-results"> <div class="has-results"> <h1 class="search-results-title"><span class='search-results-count'></span> result-matching "<span class='search-query'></span>"</h1> <ul class="search-results-list"></ul> </div> <div class="no-results"> <h1 class="search-results-title">No results matching "<span class='search-query'></span>"</h1> </div> </div> </div> <!-- END CONTENT --> </div> </div> <script> var COMPODOC_CURRENT_PAGE_DEPTH = 1; 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