Search results

Open a Dialog on condition in React Dialog component

You can prevent opening of the dialog by setting the beforeOpen event argument cancel value to true. In the following sample, the success dialog is opened when you enter the username value with minimum 4 characters. Otherwise, it will not be opened.

Source
Preview
index.tsx
index.html
App.css.jsx
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import App  from './App';

ReactDOM.render(<App />, document.getElementById('container'));
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React Dialog</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Essential JS 2 for React Components" />
    <meta name="author" content="Syncfusion" />
    <link href="styles.css" rel="stylesheet" />
    <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-react-buttons/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-react-popups/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-react-inputs/styles/material.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='container'>
        <div id='input-container'></div>
        <div id="dialog">
            <div id='loader'>Loading....</div>
        </div>
    </div>
</body>

</html>
import { DialogComponent } from '@syncfusion/ej2-react-popups';
import * as React from "react";
import './App.css';
class App extends React.Component {
    constructor() {
        super(...arguments);
        this.buttons = [{
                buttonModel: {
                    content: 'DISMISS',
                    cssClass: 'e-primary',
                    isPrimary: true,
                },
                'click': () => {
                    this.dialogInstance.hide();
                }
            }];
        this.validation = (args) => {
            if (this.userName.value === "" && this.password.value === "") {
                args.cancel = true;
                alert("Enter the username and password");
            }
            else if (this.userName.value === "") {
                args.cancel = true;
                alert("Enter the username");
            }
            else if (this.userName.value === "") {
                args.cancel = true;
                alert("Enter the password");
            }
            else if (this.userName.value.length < 4) {
                args.cancel = true;
                alert("Username must be minimum 4 characters");
            }
            else {
                args.cancel = false;
                this.userName.value = "";
                this.password.value = "";
            }
        };
        this.onInputFocus = (args) => {
            if (!args.target.parentElement.classList.contains('e-input-in-wrap')) {
                args.target.parentElement.classList.add('e-input-focus');
            }
            else {
                args.target.parentElement.parentElement.classList.add('e-input-focus');
            }
        };
        this.onInputBlur = (args) => {
            if (!args.target.parentElement.classList.contains('e-input-in-wrap')) {
                args.target.parentElement.classList.remove('e-input-focus');
            }
            else {
                args.target.parentElement.parentElement.classList.remove('e-input-focus');
            }
        };
    }
    onSubmit() {
        this.dialogInstance.show();
    }
    render() {
        return (<div className='App' id='dialog-target'>
        <div className="login-form">
            <div className='wrap'>
                <div id="heading">Sign in</div>
                <div className="e-float-input">
                    <input id="textvalue" type="text" required={true} ref={user => this.userName = user} onFocus={this.onInputFocus} onBlur={this.onInputBlur}/>
                    <span className="e-float-line"/>
                    <label className="e-float-text">Username</label>
                </div>
                <div className="e-float-input">
                    <input id="textvalue2" type="password" required={true} ref={pwd => this.password = pwd} onFocus={this.onInputFocus} onBlur={this.onInputBlur}/>
                    <span className="e-float-line"/>
                    <label className="e-float-text">Password</label>
                </div>
                <div className="button-contain">
                    <button className="e-control e-btn e-info" id="targetButton" role="button" e-ripple="true" onClick={this.onSubmit = this.onSubmit.bind(this)}>Log in</button>
                </div>
            </div>
        </div>
    <DialogComponent id='dialog' header='Success' buttons={this.buttons} beforeOpen={this.validation} content='Congratulations! Login Success' width='250px' isModal={true} ref={dialog => this.dialogInstance = dialog} visible={false} target='#dialog-target'/></div>);
    }
}
export default App;