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angular-notifier

A well designed, fully animated, highly customizable, and easy-to-use notification library for your Angular 2+ application.

  • 2.0.0
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angular-notifier

A well designed, fully animated, highly customizable, and easy-to-use notification library for your Angular 2+ application.

npm version dependency status peer dependency status travis ci build status Codecov Known Vulnerabilities license


Demo

You can play around with this library with this Plunker right here.

Angular Notifier Animated Preview GIF


Table of Contents

Also, see the Changelog as well as at the MIT License. Or learn about me.



How to install

To get angular-notifier via npm, simply add it as a new dependency to your package.json file and run npm install. Alternatively, install it directly by running:

npm install angular-notifier --save

Browser Support & Polyfills

By default, meaning without any polyfills, angular-notifier should be compatible with the latest versions of Chrome, Firefox, and Opera. Bringing in the following polyfills will extend the browser support:

  • To be able to use the latest and greatest JavaScript features in older browsers (e.g. older version of IE & Safari), you might want to add core-js to your polyfills.
  • For animation support (in particular, for better Web Animations API support), you might want to use the web-animations-js polyfill. For details, see the corresponding CanIUse page.

For detailed information about the Angular browser support read the official Angular browser support documentation. If you generated your Angular project with the Angular CLI, all the polyfills mentioned above do already exist in your polyfills.ts file - waiting for you to enable and install them.



How to setup

Before actually being able to use the angular-notifier library within our code, we have to first set it up within Angular, and also bring the styles into our project.


1. Import the NotifierModule

First of all, make angular-notifier globally available to your Angular application by importing (and optionally also configuring) the NotifierModule the your root Angular module. For example:

import { NotifierModule } from 'angular-notifier';

@NgModule( {
  imports: [
    NotifierModule
  ]
} )
export class AppModule {}

But wait -- your probably might want to customize your notifications' look and behaviour according to your requirements and needs. To do so, call the withConfig method on the NotifierModule, and pass in the options. For example:

import { NotifierModule } from 'angular-notifier';

@NgModule( {
  imports: [
    NotifierModule.withConfig( {
      // Custom options in here
    } )
  ]
} )
export class AppModule {}

2. Add the notifier-container component

In addition, you have to place the notifier-container component somewhere in your application, best at the last element of your root (app) component. For example:

@Component( {
  selector: 'app',
  template: `
    <h1>Hello World</h1>
    <x-notifier-container></x-notifier-container>
  `
} )
export class AppComponent {}

Later on, this component will contain and manage all your applications' notifications.


3. Import the styles

Of course we also need to import the angular-notifier styles into our application. Depending on the architecture of your Angular application, you want to either import the original SASS files, or the already compiled CSS files instead - or none of them if you wish to write your own styles from scratch.

The easy way: Import all the styles

To import all the styles, simple include either the ~/angular.notifier/styles.(scss|css) file. It contains the core styles as well as all the themes and notification types.

The advanced way: Only import the styles actually needed

To keep the size if your styles as small as possible (improving performance for the perfect UX), your might instead decide to only import the styles actually needed by our application. The angular-notifier styles are modular:

  • The ~/angular-notifier/styles/core.(scss|css) file is always required, it defines the basic styles (such as the layout)
  • Themes can be imported from the ~/angular-notifier/styles/theme folder
  • The different notification types, then, can be imported from the ~/angular-notifier/styles/types folder



How to use

Using angular-notifier is as simple as it can get -- simple import and inject the NotifierService into every component (directive, service, ...) you want to use in. For example:

import { NotifierService } from 'angular-notifier';

@Component( {
  // Implementation details
} )
export class MyAwesomeComponent {

  private readonly notifier: NotifierService;

  constructor( notifierService: NotifierService ) {
    this.notifier = notifierService;
  }

}

Show notifications

Showing a notification is simple - all your need is a type, and a message to be displayed. For example:

this.notifier.notify( 'success', 'You are awesome! I mean it!' );

You can further pass in a notification ID as the third (optional) argument. Essentially, such a notification ID is nothing more but a unique string tha can be used later on to gain access (and thus control) to this specific notification. For example:

this.notifier.notify( 'success', 'You are awesome! I mean it!', 'THAT_NOTIFICATION_ID' );

For example, you might want to define a notification ID if you know that, at some point in the future, you will need to remove this exact notification.

The syntax above is actually just a shorthand version of the following:

this.notifier.show( {
  type: 'success',
  message: 'You are awesome! I mean it!',
  id: 'THAT_NOTIFICATION_ID' // Again, this is optional
} );

Hide notifications

You can also hide notifications. To hide a specific notification - assuming you've defined a notification ID when creating it, simply call:

this.notifier.hide( 'THAT_NOTIFICATION_ID' );

Furthermore, your can hide the newest notification by calling:

this.notifier.hideNewest();

Or, your could hide the oldest notification:

this.notifier.hideOldest();

And, of course, it's also possible to hide all visible notifications at once:

this.notifier.hideAll();



How to customize

From the beginning, the angular-notifier library has been written with customizability in mind. The idea is that angular-notifier works the way your want it to, so that you can make it blend perfectly into the rest of your application. Still, the default configuration should already provide a great User Experience.

Keep in mind that angular-notifier can be configured only once - which is at the time you import the NotifierModule into your root (app) module.


Position

With the position property you can define where exactly notifications will appear on the screen:

position: {

  horizontal: {

    /**
     * Defines the horizontal position on the screen
     * @type {'left' | 'middle' | 'right'}
     */
    position: 'left',

    /**
     * Defines the horizontal distance to the screen edge (in px)
     * @type {number}
     */
    distance: 12

  },

  vertical: {

    /**
     * Defines the vertical position on the screen
     * @type {'top' | 'bottom'}
     */
    position: 'bottom',

    /**
     * Defines the vertical distance to the screen edge (in px)
     * @type {number}
     */
    distance: 12

    /**
     * Defines the vertical gap, existing between multiple notifications (in px)
     * @type {number}
     */
    gap: 10

  }

}

Theme

With the theme property you can change the overall look and feel of your notifications:

/**
 * Defines the notification theme, responsible for the Visual Design of notifications
 * @type {string}
 */
theme: 'material';
Theming in detail

Well, how does theming actually work? In the end, the value set for the theme property will be part of a class added to each notification when being created. For example, using material as the theme results in all notifications getting a class assigned named x-notifier__notification--material.

Everyone - yes, I'm looking at you - can use this mechanism to write custom notification themes and apply them via the theme property. For example on how to create a theme from scratch, just take a look at the themes coming along with this library (as for now only the material theme).


Behaviour

With the behaviour property you can define how notifications will behave in different situations:

behaviour: {

  /**
   * Defines whether each notification will hide itself automatically after a timeout passes
   * @type {number | false}
   */
  autoHide: 5000,

  /**
   * Defines what happens when someone clicks on a notification
   * @type {'hide' | false}
   */
  onClick: false,

  /**
   * Defines what happens when someone hovers over a notification
   * @type {'pauseAutoHide' | 'resetAutoHide' | false}
   */
  onMouseover: 'pauseAutoHide',

  /**
   * Defines whether the dismiss button is visible or not
   * @type {boolean}
   */
  showDismissButton: true,

  /**
   * Defines whether multiple notification will be stacked, and how high the stack limit is
   * @type {number | false}
   */
  stacking: 4

}

Animations

With the animations property your can define whether and how exactly notification will be animated:

animations: {

  /**
   * Defines whether all (!) animations are enabled or disabled
   * @type {boolean}
   */
  enabled: true,

  show: {

    /**
     * Defines the animation preset that will be used to animate a new notification in
     * @type {'fade' | 'slide'}
     */
    preset: 'slide',

    /**
     * Defines how long it will take to animate a new notification in (in ms)
     * @type {number}
     */
    speed: 300,

    /**
     * Defines which easing method will be used when animating a new notification in
     * @type {'linear' | 'ease' | 'ease-in' | 'ease-out' | 'ease-in-out'}
     */
    easing: 'ease'

  },

  hide: {

    /**
     * Defines the animation preset that will be used to animate a new notification out
     * @type {'fade' | 'slide'}
     */
    preset: 'fade',

    /**
     * Defines how long it will take to animate a new notification out (in ms)
     * @type {number}
     */
    speed: 300,

    /**
     * Defines which easing method will be used when animating a new notification out
     * @type {'linear' | 'ease' | 'ease-in' | 'ease-out' | 'ease-in-out'}
     */
    easing: 'ease',

    /**
     * Defines the animation offset used when hiding multiple notifications at once (in ms)
     * @type {number | false}
     */
    offset: 50

  },

  shift: {

    /**
     * Defines how long it will take to shift a notification around (in ms)
     * @type {number}
     */
    speed: 300,

    /**
     * Defines which easing method will be used when shifting a notification around
     * @type {string}
     */
    easing: 'ease' // All standard CSS easing methods work

  },

  /**
   * Defines the overall animation overlap, allowing for much smoother looking animations (in ms)
   * @type {number | false}
   */
  overlap: 150

}

In short -- the default configuration

To sum it up, the following is the default configuration (copy-paste-friendly):

const notifierDefaultOptions: NotifierOptions = {
  position: {
    horizontal: {
      position: 'left',
      distance: 12
    },
    vertical: {
      position: 'bottom',
      distance: 12,
      gap: 10
    }
  },
  theme: 'material',
  behaviour: {
    autoHide: 5000,
    onClick: false,
    onMouseover: 'pauseAutoHide',
    showDismissButton: true,
    stacking: 4
  },
  animations: {
    enabled: true,
    show: {
      preset: 'slide',
      speed: 300,
      easing: 'ease'
    },
    hide: {
      preset: 'fade',
      speed: 300,
      easing: 'ease',
      offset: 50
    },
    shift: {
      speed: 300,
      easing: 'ease'
    },
    overlap: 150
  }
};



What's next?

There is an endless number of features, enhancements, and optimizations that would be possible (and awesome to have) in the angular-notifier library. Some ideas:

  • Extended options for all - and even single - notifications
    • Symbol for notifications (e.g. checkmark, cross, or even images)
    • Custom buttons next to the close button (with callback functionality)
    • Callback functions / observable streams for specific events / global events
    • Enhanced stacking (e.g. negative values, document size as implicit stacking limit)
  • Allowing the change of content from outside (e.g. while the notifications is still on-screen)
  • Allow custom animation presets, configurable from outside (similar to that creating custom themes is possible)
  • More themes coming along with angular-notifier (e.g. iOS style, MDL style, bootstrap style)
  • HTML templates as notification content
  • React on document size changes (full responsiveness)
  • Pull Request Templates, Contributing Guidelines
  • Refactor unit tests

You can't wait for one of these features? Or have some new ideas? Let me know by creating an issue. Contributions are of course welcomed at any time!

Or look at one of the alternative notification libraries for Angular. A great collection can be found right here.



Creator

Dominique Müller

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Package last updated on 11 May 2017

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