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# Angular2 Lightbox
A [lighbox2](https://github.com/lokesh/lightbox2) implementation port to use with Angular2 without the need for jQuery

This module works with angular 2.x and 4.x
[demo](https://themyth92.com/project/angular2-lightbox/)

## Installation
`npm install --save angular2-lightbox`

Update your `system.config.js`

```javascript
{
  map: {
    'angular2-lightbox': 'node_modules/angular2-lightbox'
  },
  packages: {
    'angular2-lightbox': {
      main: './index.js',
      defaultExtension: 'js'
    }
  }
}
```

## Usage
### CSS
Include modified version of `lightbox.css` in your `index.html`

```html
<link rel="stylesheet" href="./node_modules/angular2-lightbox/lightbox.css">
```

### Module:
Import `LightboxModule` from `angular2-lightbox`

```javascript
import { LightboxModule } from 'angular2-lightbox';

@NgModule({
  imports: [ LightboxModule ]
})
```

### Component
1. Markup

```html
<div *ngFor="let image of _albums; let i=index">
  <img [src]="image.thumb" (click)="open(i)"/>
</div>
```

2. Component method

```javascript
import { Lightbox } from 'angular2-lightbox';

export class AppComponent {
  private _album: Array = [];
  constructor(private _lightbox: Lightbox) {
    for (let i = 1; i <= 4; i++) {
      const src = 'demo/img/image' + i + '.jpg';
      const caption = 'Image ' + i + ' caption here';
      const thumb = 'demo/img/image' + i + '-thumb.jpg';
      const album = {
         src: src,
         caption: caption,
         thumb: thumb
      };

      this._albums.push(album);
    }
  }

  open(index: number): void {
    // open lightbox
    this._lightbox.open(this._albums, index);
  }
}

```

Each `object` of `album` array inside your component may contains 3 properties :

Properties | Requirement | Description
----------|-------------|------------
src | Required | The source image to your thumbnail that you want to with use lightbox when user click on `thumbnail` image
caption | Optional | Your caption corresponding with your image 
thumb | Optional | Source of your thumbnail. It is being used inside your component markup so this properties depends on your naming.

3. Listen to lightbox event

You can listen to 3 events, which are either **CHANGE_PAGE**, **CLOSE** or **OPEN**.

```javascript
import { LightboxEvent, LIGHTBOX_EVENT } from 'angular2-lightbox';
import { Subscription } from 'rxjs/Subscription';

export class AppComponent {
  private _subscription: Subscription;
  constructor(private _lightboxEvent: LightboxEvent) {}
  open(index: number): void {
    // register your subscription and callback whe open lightbox is fired
    this._subscription = this._lightboxEvent.lightboxEvent$
      .subscribe(event => this._onReceivedEvent(event));
  }

  private _onReceivedEvent(event: any): void {
    // remember to unsubscribe the event when lightbox is closed
    if (event.id === LIGHTBOX_EVENT.CLOSE) {
      // event CLOSED is fired
      this._subscription.unsubscribe();
    }

    if (event.id === LIGHTBOX_EVENT.OPEN) {
      // event OPEN is fired
    }

    if (event.id === LIGHTBOX_EVENT.CHANGE_PAGE) {
      // event change page is fired
      console.log(event.data); // -> image index that lightbox is switched to
    }
  }
}
```

## Lightbox options

Available options based on lightbox2 options

Properties | Default | Description
-----------|---------|------------
fadeDuration | **0.7** seconds | *duration* starting when the **src** image is **loaded** to **fully appear** onto screen.
resizeDuration | **0.5** seconds | *duration* starting when Lightbox container  **change** its dimension from a *default/previous image* to the *current image* when the *current image* is **loaded**.
fitImageInViewPort | **true** | Determine whether lightbox will use the natural image *width/height*  or change the image *width/height* to fit the view of current window. Change this option to **true** to prevent problem when image too big compare to browser windows.
positionFromTop | **20** px | The position of lightbox from the top of window browser
showImageNumberLabel | **false** | Determine whether to show the image number to user. The default text shown is `Image IMAGE_NUMBER of ALBUM_LENGTH`
alwaysShowNavOnTouchDevices | **false** | Determine whether to show `left/right` arrow to user on Touch devices.
wrapAround | **false** | Determine whether to move to the start of the album when user reaches the end of album and vice versa. Set it to **true** to enable this feature.
disableKeyboardNav | **false** | Determine whether to disable navigation using keyboard event.
disableScrolling | **false** | If **true**, prevent the page from scrolling while Lightbox is open. This works by settings overflow hidden on the body.

**NOTE**: You can either override default config or during a specific opening window
1. Override default config
```javascript
import { LightboxConfig } from 'angular2-lightbox';

export class AppComponent {
  constructor(private _lighboxConfig: LightboxConfig) {
    // override default config
    _lighboxConfig.fadeDuration = 1;
  }
}
```

2. Set config in a specific opening window
```javascript
import { LightboxConfig, Lightbox } from 'angular2-lightbox';

export class AppComponent {
  constructor(private _lighboxConfig: LightboxConfig, private _lightbox: Lightbox) {}
  open(index: number) {
    // override the default config on second parameter
    this._lightbox.open(this._albums, index, { wrapAround: true, showImageNumberLabel: true });
  }
}
```

## License

MIT