MultilineTextBox - Documentation | www.HtmlElements.com

Overview

Smart.MultilineTextBox element represents multi row editable text box, supported two different display modes. The element also inherits the properties of a standard Textarea.

Getting Started with MultilineTextBox Web Component

Smart UI for Web Components is distributed as smart-webcomponents NPM package. You can also get the full download from our website with all demos from the Download page.

Setup the MultilineTextBox

Smart UI for Web Components is distributed as smart-webcomponents NPM package

  1. Download and install the package.

    npm install smart-webcomponents

  2. Once installed, import the MultilineTextBox module in your application.

    <script type="module" src="node_modules/smart-webcomponents/source/modules/smart.multilinetextbox.js"></script>

  3. Adding CSS reference

    The smart.default.css CSS file should be referenced using following code.

    <link rel="stylesheet" type="text/css" href="node_modules/smart-webcomponents/source/styles/smart.default.css" />

  4. Add the MultilineTextBox tag to your Web Page

    <smart-multiline-text-box id="multilinetextbox"></smart-multiline-text-box>

  5. Create the MultilineTextBox Component

    	<script type="module">
    		Smart('#multilinetextbox', class {
    			get properties() {
    				return { value: "Peter Brown" }
    			}
    		});
    	</script>	   
    		

    Another option is to create the MultilineTextBox is by using the traditional Javascript way:
    	const multilinetextbox = document.createElement('smart-multiline-text-box');
    
    	multilinetextbox.disabled = true;
    	document.body.appendChild(multilinetextbox);
    		

    Smart framework provides a way to dynamically create a web component on demand from a DIV tag which is used as a host. The following imports the web component's module and creates it on demand, when the document is ready. The #multilinetextbox is the ID of a DIV tag.

    	import "../../source/modules/smart.multilinetextbox.js";
    
    	document.readyState === 'complete' ? init() : window.onload = init;
    
    	function init() { 
    		const multilinetextbox = new Smart.MultilineTextBox('#multilinetextbox', { value: "Peter Brown" });
    	}
    	

  6. Open the page in your web server.

Appearance

The Multiline Text Box could be filled with value via the value property

<!DOCTYPE html>
<html lang="en">
<head>
 <link rel="stylesheet" href="../../source/styles/smart.default.css" type="text/css" />
 <script type="text/javascript" src="../../source/smart.element.js"></script>
 <script type="text/javascript" src="../../source/smartbutton.js"></script>
 <script type="text/javascript" src="../../source/smartscrollbar.js"></script>
 <script type="text/javascript" src="../../source/smartlistbox.js"></script>
 <script type="text/javascript" src="../../source/smartdropdownlist.js"></script>
 <script type="text/javascript" src="../../source/smarttextbox.js"></script>
 <script type="text/javascript" src="../../source/smartmultilinetextbox.js"></script>
 <script>
 window.onload = function () {
    document.querySelector('smart-multiline-text-box').value = 'Multiline Text Box New Value';
 }
 </script>
</head>
<body>
 <smart-multiline-text-box></smart-multiline-text-box>
</body>
</html>

Demo

Element's content could be set also on initialization if plain text is wrapped between it's open and closing tag.

 <smart-multiline-text-box>Multiline Text Box Value</smart-multiline-text-box>

Demo

The appearance of scrollbars could be controlled via allowHorizontalScrollbar and allowVerticalScrollbar properties.

 <smart-multiline-text-box allow-vertical-scrollbar></smart-multiline-text-box>

Demo

The Multiline Text Box could be resized via small icon in the bottom right corner when resizable is set to true.

 <smart-multiline-text-box resizable>Multiline Text Box</smart-multiline-text-box>

Demo

Behavior

The element offers two display modes:

  • default
  • escaped

In default display mode Smart.MultilineTextBox behaves like a standard textarea.In escaped mode special characters are escaped.

Here's how to set a new displayMode on element initialiation:

 <smart-multiline-text-box display-mode="escaped"></smart-multiline-text-box>

And here's how to change it via javascript after the element has been initialized:

<!DOCTYPE html>
<html lang="en">
<head>
 <link rel="stylesheet" href="../../source/styles/smart.default.css" type="text/css" />
 <script type="text/javascript" src="../../source/smart.element.js"></script>
 <script type="text/javascript" src="../../source/smart.button.js"></script>
 <script type="text/javascript" src="../../source/smart.scrollbar.js"></script>
 <script type="text/javascript" src="../../source/smart.listbox.js"></script>
 <script type="text/javascript" src="../../source/smart.dropdownlist.js"></script>
 <script type="text/javascript" src="../../source/smart.textbox.js"></script>
 <script type="text/javascript" src="../../source/smart.multilinetextbox.js"></script>
 <script>
 window.onload = function () {
    document.querySelector('smart-multiline-text-box').displayMode = 'escaped';
 }
 </script>
</head>
<body>
 <smart-multiline-text-box></smart-multiline-text-box>
</body>
</html>

Create, Append, Remove, Get/Set Property, Invoke Method, Bind to Event


Create a new element:
	const multilinetextbox = document.createElement('smart-multiline-text-box');
	

Append it to the DOM:
	document.body.appendChild(multilinetextbox);
	

Remove it from the DOM:
	multilinetextbox.parentNode.removeChild(multilinetextbox);
	

Set a property:
	multilinetextbox.propertyName = propertyValue;
	

Get a property value:
	const propertyValue = multilinetextbox.propertyName;
	

Invoke a method:
	multilinetextbox.methodName(argument1, argument2);
	

Add Event Listener:
	const eventHandler = (event) => {
	   // your code here.
	};

	multilinetextbox.addEventListener(eventName, eventHandler);
	

Remove Event Listener:
	multilinetextbox.removeEventListener(eventName, eventHandler, true);
	

Using with Typescript

Smart Web Components package includes TypeScript definitions which enables strongly-typed access to the Smart UI Components and their configuration.

Inside the download package, the typescript directory contains .d.ts file for each web component and a smart.elements.d.ts typescript definitions file for all web components. Copy the typescript definitions file to your project and in your TypeScript file add a reference to smart.elements.d.ts

Read more about using Smart UI with Typescript.

Getting Started with Angular MultilineTextBox Component

Setup Angular Environment

Angular provides the easiest way to set angular CLI projects using Angular CLI tool.

Install the CLI application globally to your machine.

npm install -g @angular/cli

Create a new Application

ng new smart-angular-multilinetextbox

Navigate to the created project folder

cd smart-angular-multilinetextbox

Setup the MultilineTextBox

Smart UI for Angular is distributed as smart-webcomponents-angular NPM package

  1. Download and install the package.
    npm install smart-webcomponents-angular
  2. Adding CSS reference

    The following CSS file is available in ../node_modules/smart-webcomponents-angular/ package folder. This can be referenced in [src/styles.css] using following code.

    @import 'smart-webcomponents-angular/source/styles/smart.default.css';

    Another way to achieve the same is to edit the angular.json file and in the styles add the style.

    "styles": [
    		"node_modules/smart-webcomponents-angular/source/styles/smart.default.css"
    	]
    If you want to use Bootstrap, Fluent or other themes available in the package, you need to add them after 'smart.default.css'.
  3. Example with Angular Standalone Components


    app.component.html

     <smart-multiline-text-box #multilinetextbox [enterKeyBehavior]="'newLine'" [selectAllOnFocus]="true" [autoFocus]="true"
        [placeholder]="'smart Text Area'"></smart-multiline-text-box>

    app.component.ts

     import { Component, ViewChild, OnInit, AfterViewInit, ViewEncapsulation } from '@angular/core';
    import { MultilineTextBoxComponent } from 'smart-webcomponents-angular/multilinetextbox';
    
    
    import { CommonModule } from '@angular/common';
    import { RouterOutlet } from '@angular/router';
    import { MultilineTextBoxModule } from 'smart-webcomponents-angular/multilinetextbox';
    
    @Component({
        selector: 'app-root',
    	standalone: true,
    	imports: [CommonModule, MultilineTextBoxModule, RouterOutlet],
        templateUrl: './app.component.html',
    	styleUrls: ['./app.component.css'],
    	
    })
    
    export class AppComponent implements AfterViewInit, OnInit {	
    	@ViewChild('multilinetextbox', { read: MultilineTextBoxComponent, static: false }) multilinetextbox!: MultilineTextBoxComponent;
    	
     
    	ngOnInit(): void {
    		// onInit code.
    	}
    
    	ngAfterViewInit(): void {
    		// afterViewInit code.
    		this.init();
        }
    		
    	init(): void {
    		// init code.
    	    
    
    	}	
    }

  4. Example with Angular NGModule


    app.component.html

     <smart-multiline-text-box #multilinetextbox [enterKeyBehavior]="'newLine'" [selectAllOnFocus]="true" [autoFocus]="true"
        [placeholder]="'smart Text Area'"></smart-multiline-text-box>

    app.component.ts

     import { Component, ViewChild, OnInit, AfterViewInit, ViewEncapsulation } from '@angular/core';
    import { MultilineTextBoxComponent } from 'smart-webcomponents-angular/multilinetextbox';
    
    
    @Component({
        selector: 'app-root',
        templateUrl: './app.component.html',
    	styleUrls: ['./app.component.css'],
    	
    })
    
    export class AppComponent implements AfterViewInit, OnInit {	
    	@ViewChild('multilinetextbox', { read: MultilineTextBoxComponent, static: false }) multilinetextbox!: MultilineTextBoxComponent;
    	
     
    	ngOnInit(): void {
    		// onInit code.
    	}
    
    	ngAfterViewInit(): void {
    		// afterViewInit code.
    		this.init();
        }
    		
    	init(): void {
    		// init code.
    	    
    
    	}	
    }

    app.module.ts

     import { NgModule } from '@angular/core';
    import { BrowserModule } from '@angular/platform-browser';
    
    import { MultilineTextBoxModule } from 'smart-webcomponents-angular/multilinetextbox';
    
    import { AppComponent } from './app.component';
    
    @NgModule({
        declarations: [ AppComponent ],
        imports: [ BrowserModule, MultilineTextBoxModule ],
        bootstrap: [ AppComponent ]
    })
    
    export class AppModule { }


Running the Angular application

After completing the steps required to render a MultilineTextBox, run the following command to display the output in your web browser

ng serve
and open localhost:4200 in your favorite web browser.

Read more about using Smart UI for Angular: https://www.htmlelements.com/docs/angular-cli/.

Getting Started with React MultilineTextBox Component

Setup React Environment

The easiest way to start with React is to use NextJS Next.js is a full-stack React framework. It’s versatile and lets you create React apps of any size—from a mostly static blog to a complex dynamic application.

npx create-next-app my-app
cd my-app
npm run dev	
or
yarn create next-app my-app
cd my-app
yarn run dev

Preparation

Setup the MultilineTextBox

Smart UI for React is distributed as smart-webcomponents-react package

  1. Download and install the package.

    In your React Next.js project, run one of the following commands to install Smart UI MultilineTextBox for React

    With NPM:

    npm install smart-webcomponents-react
    With Yarn:
    yarn add smart-webcomponents-react

  2. Once installed, import the React MultilineTextBox Component and CSS files in your application and render it. app.js

    import 'smart-webcomponents-react/source/styles/smart.default.css';
    import React from "react";
    import ReactDOM from 'react-dom/client';
    import { MultilineTextBox, ListItem, ListItemsGroup } from 'smart-webcomponents-react/multilinetextbox';
    
    class App extends React.Component {
    
    	init() {
    
    	}
    
    
    	componentDidMount() {
    
    	}
    
    	render() {
    		return (
    			<div>
    				<MultilineTextBox enterKeyBehavior="newLine" selectAllOnFocus autoFocus placeholder="smart Text Area"></MultilineTextBox>
    			</div>
    		);
    	}
    }
    
    
    
    export default App;
    	

Running the React application

Start the app with
npm run dev
or
yarn run dev
and open localhost:3000 in your favorite web browser to see the output.

Setup with Vite

Vite (French word for "quick", pronounced /vit/, like "veet") is a build tool that aims to provide a faster and leaner development experience for modern web projects
With NPM:
npm create vite@latest
With Yarn:
yarn create vite
Then follow the prompts and choose React as a project.

Navigate to your project's directory. By default it is 'vite-project' and install Smart UI for React

In your Vite project, run one of the following commands to install Smart UI MultilineTextBox for React

With NPM:

npm install smart-webcomponents-react
With Yarn:
yarn add smart-webcomponents-react

Open src/App.tsx App.tsx

import 'smart-webcomponents-react/source/styles/smart.default.css';
import React from "react";
import ReactDOM from 'react-dom/client';
import { MultilineTextBox, ListItem, ListItemsGroup } from 'smart-webcomponents-react/multilinetextbox';

class App extends React.Component {

	init() {

	}


	componentDidMount() {

	}

	render() {
		return (
			<div>
				<MultilineTextBox enterKeyBehavior="newLine" selectAllOnFocus autoFocus placeholder="smart Text Area"></MultilineTextBox>
			</div>
		);
	}
}



export default App;
	

Read more about using Smart UI for React: https://www.htmlelements.com/docs/react/.

Getting Started with Vue MultilineTextBox Component


Setup Vue with Vite

In this section we will introduce how to scaffold a Vue Single Page Application on your local machine. The created project will be using a build setup based on Vite and allow us to use Vue Single-File Components (SFCs). Run the following command in your command line
npm create vue@latest
This command will install and execute create-vue, the official Vue project scaffolding tool. You will be presented with prompts for several optional features such as TypeScript and testing support:
✔ Project name: … 
✔ Add TypeScript? … No / Yes
✔ Add JSX Support? … No / Yes
✔ Add Vue Router for Single Page Application development? … No / Yes
✔ Add Pinia for state management? … No / Yes
✔ Add Vitest for Unit testing? … No / Yes
✔ Add an End-to-End Testing Solution? … No / Cypress / Playwright
✔ Add ESLint for code quality? … No / Yes
✔ Add Prettier for code formatting? … No / Yes

Scaffolding project in ./...
Done.
If you are unsure about an option, simply choose No by hitting enter for now. Once the project is created, follow the instructions to install dependencies and start the dev server:
cd 
npm install
npm install smart-webcomponents
npm run dev
  • Make Vue ignore custom elements defined outside of Vue (e.g., using the Web Components APIs). Otherwise, it will throw a warning about an Unknown custom element, assuming that you forgot to register a global component or misspelled a component name.

    Open src/main.js in your favorite text editor and change its contents to the following:

    main.js

    import { createApp } from 'vue'
    import App from './App.vue'
    
    const app = createApp(App)
    
    app.config.isCustomElement = tag => tag.startsWith('smart-');
    app.mount('#app')
    		
  • Open src/App.vue in your favorite text editor and change its contents to the following:

    App.vue

    <template>
      <div class="vue-root">
        <smart-multiline-text-box
          enter-key-behavior="newLine"
          select-all-on-focus
          auto-focus
          placeholder="smart Text Area"
        ></smart-multiline-text-box>
      </div>
    </template>
    
    <script>
    import { onMounted } from "vue";
    import "smart-webcomponents/source/styles/smart.default.css";
    import "smart-webcomponents/source/modules/smart.multilinetextbox.js";
    
    export default {
      name: "app",
      setup() {
        onMounted(() => {});
      }
    };
    </script>
    
    <style>
    </style>
    		
    We can now use the smart-multiline-text-box with Vue 3. Data binding and event handlers will just work right out of the box.

Running the Vue application

Start the app with
npm run serve
and open http://localhost:5173/ in your favorite web browser to see the output below:
When you are ready to ship your app to production, run the following:
npm run build
This will create a production-ready build of your app in the project's ./dist directory.

Read more about using Smart UI for Vue: https://www.htmlelements.com/docs/vue/.