XTermConsoleAddon

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XTermConsoleAddon

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Vaadin 14+ Java integration of xterm.js terminal emulator.

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# XTerm Console Add-on

Vaadin 14+ Java integration of [xterm.js](https://xtermjs.org/) terminal emulator.

## Features

* Send input text to server
* Programmatically write to the console
* Clipboard support 
* Command line edition (cursor keys, insert, etc.)
* ANSI escape sequences
* And much more...

## Supported versions

| Vaadin Version | Add-on Version |
|---|---|
| 24-25 | 3.x |
| 23 | 2.x |
| 14 | 1.x |

## Online demo

* [Vaadin 14](http://addonsv14.flowingcode.com/xterm) (Add-on version 1.x)
* [Vaadin 23](http://addonsv23.flowingcode.com/xterm) (Add-on version 2.x)
* [Vaadin 24](https://addonsv24.flowingcode.com/xterm) (Add-on version 3.x)

## Download release

[Available in Vaadin Directory](https://vaadin.com/directory/component/xterm-console-addon)

### Maven install

Add the following dependencies in your pom.xml file:

```xml
<dependency>
   <groupId>com.flowingcode.addons</groupId>
   <artifactId>xterm-console</artifactId>
   <version>X.Y.Z</version>
</dependency>
```

```xml
<repository>
   <id>vaadin-addons</id>
   <url>https://maven.vaadin.com/vaadin-addons</url>
</repository>
```

For SNAPSHOT versions see [here](https://maven.flowingcode.com/snapshots/).

## Building and running demo

- git clone repository
- mvn clean install jetty:run

To see the demo, navigate to http://localhost:8080/

## Release notes

See [here](https://github.com/FlowingCode/XTermConsoleAddon/releases)

## Issue tracking

The issues for this add-on are tracked on its github.com page. All bug reports and feature requests are appreciated.

## Contributions

Contributions are welcome. There are two primary ways you can contribute: by reporting issues or by submitting code changes through pull requests. To ensure a smooth and effective process for everyone, please follow the guidelines below for the type of contribution you are making.

#### 1. Reporting Bugs and Requesting Features

Creating an issue is a highly valuable contribution. If you've found a bug or have an idea for a new feature, this is the place to start.

* Before creating an issue, please check the existing issues to see if your topic is already being discussed.
* If not, create a new issue, choosing the right option: "Bug Report" or "Feature Request". Try to keep the scope minimal but as detailed as possible.

> **A Note on Bug Reports**
> 
> Please complete all the requested fields to the best of your ability. Each piece of information, like the environment versions and a clear description, helps us understand the context of the issue.
> 
> While all details are important, the **[minimal, reproducible example](https://stackoverflow.com/help/minimal-reproducible-example)** is the most critical part of your report. It's essential because it removes ambiguity and allows our team to observe the problem firsthand, exactly as you are experiencing it.

#### 2. Contributing Code via Pull Requests

As a first step, please refer to our [Development Conventions](https://github.com/FlowingCode/DevelopmentConventions) page to find information about Conventional Commits & Code Style requirements.

Then, follow these steps for creating a contribution:
 
- Fork this project.
- Create an issue to this project about the contribution (bug or feature) if there is no such issue about it already. Try to keep the scope minimal.
- Develop and test the fix or functionality carefully. Only include minimum amount of code needed to fix the issue.
- For commit message, use [Conventional Commits](https://github.com/FlowingCode/DevelopmentConventions/blob/main/conventional-commits.md) to describe your change.
- Send a pull request for the original project.
- Comment on the original issue that you have implemented a fix for it.

## License & Author

This add-on is distributed under Apache License 2.0. For license terms, see LICENSE.txt.

XTermConsoleAddon is written by Flowing Code S.A.

# Developer Guide

## Getting started

Initialize a terminal with autosize, clipboard support and listener:
```
XTerm xterm = new XTerm();
xterm.writeln("Hello world.\n\n");
xterm.setCursorBlink(true);
xterm.setCursorStyle(CursorStyle.UNDERLINE);
    	
xterm.setSizeFull();
xterm.setCopySelection(true);
xterm.setUseSystemClipboard(UseSystemClipboard.READWRITE);
xterm.setPasteWithRightClick(true);

xterm.addLineListener(ev->{
    String line = ev.getLine();
    System.out.println(line);
});	
		
xterm.focus();
    	
xterm.fit();
```

## Special configuration when using Spring

By default, Vaadin Flow only includes ```com/vaadin/flow/component``` to be always scanned for UI components and views. For this reason, the addon might need to be whitelisted in order to display correctly.

To do so, just add ```com.flowingcode``` to the ```vaadin.whitelisted-packages``` property in ```src/main/resources/application.properties```, like:

```vaadin.whitelisted-packages = com.vaadin,org.vaadin,dev.hilla,com.flowingcode```
 
More information on Spring whitelisted configuration [here](https://vaadin.com/docs/latest/integrations/spring/configuration/#configure-the-scanning-of-packages).

## Special configuration for Vaadin 23.3 and Vaadin 24

Vaadin 23.3 and 24 validate addons sources as part of the build (see vaadin/flow#15485). 
In order to exclude the code in the addons from validation, you need to add the following to tsconfig.json:

```
  "exclude": [
	"frontend/generated/jar-resources"
  ]
```

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