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mat-tristate-checkbox

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mat-tristate-checkbox

3-state checkbox for Angular with Material as library component with demo project

latest
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mat-tristate-checkbox

Version License: MIT Angular version GitHub package.json dependency version (prod)

<mat-tristate-checkbox> provides the same functionality as the Angular Material checkbox enhanced with 3 states. This repository contains the checkbox component and a demo project.

Prerequisites

The package can be used in Angular apps with Angular Material installed. This Version requires Angular 16.

Installation of checkbox

npm install mat-tristate-checkbox

Sample usage of checkbox

Now you can use the mat-tristate-checkbox component in your app components, for example in app.module.ts:

import { MatTristateCheckboxComponent } from 'mat-tristate-checkbox';
...
@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    ...
    MatTristateCheckboxComponent
  ],
  ...
})
export class AppModule { }

And in template file app.component.html:

<form [formGroup]="form">
  <mat-tristate-checkbox formControlName="keepMeLoggedIn">remember me</mat-tristate-checkbox>
</form>

Demo project

Try out the demo page.

Screenshot

Properties of checkbox

NameDescription
@Input()
color: ThemePalette		Theme color palette for the component. Defaults to 'accent'
@Input()
disabled: any		Whether the checkbox is disabled.
@Input()
labelPosition: 'before' | 'after'		Whether the label should appear after or before the checkbox. Defaults to 'after'

Values of checkbox

The value aof the checkbox cycle through these values:

undefined > false > true

Usage of demo project

npm install
npm run start

Run all tests

npm run test

Changelog

For list of changes and bugfixes, see CHANGELOG.md.

Release hints

Starting with version 16 the generated package on npm is unscoped (i.e. is named 'mat-image-overflow' not '@bepo65/mat-image-overflow').

Contributing

Changelog

The project uses 'standard-version' to create the changelog. To enable this system, commit messages are linted before commits are executed by git.

The structure of commit messages is:

  <header>
  <BLANK LINE>
  <body>
  <BLANK LINE>
  <footer>

header

  <type>(<scope>): <short summary>

type and scope

  • build: Changes that affect the build system or external dependencies (example scope: npm)
  • docs: Documentation only changes
  • feat: A new feature
  • fix: A bug fix
  • perf: A code change that improves performance
  • refactor: A code change that neither fixes a bug nor adds a feature
  • test: Adding missing tests or correcting existing tests (example scopes: demo, lib, e2e)

footer

  BREAKING CHANGE: ... (requires MAJOR in Semantic Versioning)

For details of the commit messages format see Contributing to Angular.

License

Copyright © 2024 Bernhard Pottler.

Distributed under the MIT License. See LICENSE for more information.

This project uses the fonts 'Roboto' and 'Material Icons' from the Google Fonts Library that are licensed under the Apache License Version 2.0.

Hints

As eslint V9 is not supported by angular@17 and also requires a fundamental change to the configuration files, the update will be done in a later version.

As a consequence the package eslint-plugin-cypress cannot be updated to a version 4.x (as this version has a peerDependency of eslint >= 9).

FAQs

Package last updated on 02 Jul 2025

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