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angular-notifier

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

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# angular-notifier

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

</div>

## Demo

You can play around with this library with **[this Stackblitz right here](https://stackblitz.com/edit/angular-notifier-demo)**.

![Angular Notifier Animated Preview GIF](https://raw.githubusercontent.com/itsdevdom/angular-notifier/develop/docs/angular-notifier-preview.gif)

## How to install

You can get **angular-notifier** via **npm** by either adding it as a new _dependency_ to your `package.json` file and running npm install,
or running the following command:

```bash
npm install angular-notifier
```

### Angular versions

The following list describes the compatibility with Angular:

| Angular Notifier | Angular | Compilation        |
| ---------------- | ------- | ------------------ |
| `1.x`            | `2.x`   | View Engine        |
| `2.x`            | `4.x`   | View Engine        |
| `3.x`            | `5.x`   | View Engine        |
| `4.x`            | `6.x`   | View Engine        |
| `5.x`            | `7.x`   | View Engine        |
| `6.x`            | `8.x`   | View Engine        |
| `7.x`            | `9.x`   | View Engine        |
| `8.x`            | `10.x`  | View Engine        |
| `9.x`            | `11.x`  | View Engine        |
| `10.x`           | `12.x`  | View Engine        |
| `11.x`           | `13.x`  | Ivy (partial mode) |
| `12.x`           | `14.x`  | Ivy (partial mode) |
| `13.x`           | `15.x`  | Ivy (partial mode) |
| `14.x`           | `16.x`  | Ivy (partial mode) |

## 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:

```typescript
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:

```typescript
import { NotifierModule } from 'angular-notifier';

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

### 2. Use 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:

```typescript
@Component({
 selector: 'my-app',
 template: `
 <h1>Hello World</h1>
 <notifier-container></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:

```typescript
import { NotifierService } from 'angular-notifier';

@Component({
  // ...
})
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:

```typescript
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:

```typescript
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:**

```typescript
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:

```typescript
this.notifier.hide('THAT_NOTIFICATION_ID');
```

Furthermore, your can hide the newest notification by calling:

```typescript
this.notifier.hideNewest();
```

Or, your could hide the oldest notification:

```typescript
this.notifier.hideOldest();
```

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

```typescript
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:

```typescript
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:

```typescript
/**
 * 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:

```typescript
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

}
```

### Custom Templates

If you need more control over how the inner HTML part of the notification looks like, either because your style-guide requires it, or for being able to add icons etc, then you can **define a custom `<ng-template>`** which you pass to the `NotifierService`.

You can define a custom `ng-template` as follows:

```html
<ng-template #customNotification let-notificationData="notification">
 <my-custom-alert type="notificationData.type"> {{ notificationData.message }} </my-custom-alert>
</ng-template>
```

In this case you could wrap your own HTML, even a `<my-custom-alert>` component which you might use in your application. The notification data is passed in as a `notification` object, which you can reference inside the `<ng-template>` using the `let-` syntax.

Inside your component, you can then reference the `<ng-template>` by its template variable `#customNotification` using Angular's `ViewChild`:

```typescript
import { ViewChild } from '@angular/core';

@Component({
  // ...
})
export class SomeComponent {
  @ViewChild('customNotification', { static: true }) customNotificationTmpl;

constructor(private notifierService: NotifierService) {}

showNotification() {
    this.notifier.show({
      message: 'Hi there!',
      type: 'info',
      template: this.customNotificationTmpl,
    });
  }
}
```

### Animations

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

```typescript
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)_:

```typescript
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,
  },
};
```

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