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Yii2 Scroll Pager
=================
[Yii2 Scroll Pager (Y2SP)](http://kop.github.io/yii2-scroll-pager) turns your regular paginated page into an
infinite scrolling page using AJAX.
Y2SP works with a `Pagination` object which specifies the totally number of pages and the current page number.
Pager is build with help of [JQuery Infinite Ajax Scroll plugin](http://infiniteajaxscroll.com/).
[](https://packagist.org/packages/kop/yii2-scroll-pager)
[](https://codeclimate.com/github/kop/yii2-scroll-pager)
[](https://scrutinizer-ci.com/g/kop/yii2-scroll-pager/?branch=master)
[](https://gemnasium.com/kop/yii2-scroll-pager)
[](https://packagist.org/packages/kop/yii2-scroll-pager)
## Requirements
- Yii 2.0
- PHP 5.4
## Installation
The preferred way to install this extension is through [Composer](http://getcomposer.org/).
Either run
``` php composer.phar require kop/yii2-scroll-pager "dev-master" ```
or add
``` "kop/yii2-scroll-pager": "dev-master"```
to the `require` section of your `composer.json` file.
## Usage
Just pass the ScrollPager class name to the ListView `pager` configuration.
Make sure that items in your list have some classes that can be used as JavaScript selectors.
### ListView
```php
echo ListView::widget([
'dataProvider' => $dataProvider,
'itemOptions' => ['class' => 'item'],
'itemView' => '_item_view',
'pager' => ['class' => \kop\y2sp\ScrollPager::className()]
]);
```
### GridView
```php
echo GridView::widget([
'dataProvider' => $dataProvider,
'pager' => [
'class' => \kop\y2sp\ScrollPager::className(),
'container' => '.grid-view tbody',
'item' => 'tr',
'paginationSelector' => '.grid-view .pagination',
'triggerTemplate' => '<tr class="ias-trigger"><td colspan="100%" style="text-align: center"><a style="cursor: pointer">{text}</a></td></tr>',
],
]);
```
## Configuration
### General Options
| Option name | Description | Default value |
|--- |--- |--- |
| container | The selector of the element containing your items that you want to paginate. | `.list-view` |
| item | The selector of the element that each item has.<br Make sure the elements are inside the container element. | `.item` |
| paginationSelector | The selector of the element containing the pagination. | `.list-view .pagination` |
| next | The selector of the link element that links to the next page.<br> The href attribute of this element will be used to get the items from the next page.<br> Make sure there is only one(1) element that matches the selector. | `.next a` |
| delay | Minimal number of milliseconds to stay in a loading state. | `600` |
| negativeMargin | By default IAS starts loading new items when you scroll to the latest `.item` element.<br> The `negativeMargin` will be added to the items offset, giving you the ability to load new items earlier (please note that the margin is always transformed to a negative integer).<br><br> *Example:* Setting a negativeMargin of 250 means that IAS will start loading 250 pixel before the last item has scrolled into view. | `10` |
### Extensions
| Option name | Description | Default value |
|--- |--- |--- |
| enabledExtensions | The list of the enabled plugin extensions. | [<br>  `ScrollPager::EXTENSION_TRIGGER`, <br>  `ScrollPager::EXTENSION_SPINNER`, <br>  `ScrollPager::EXTENSION_NONE_LEFT`, <br>  `ScrollPager::EXTENSION_PAGING`, <br>  `ScrollPager::EXTENSION_HISTORY` <br>] |
### Extension Options
| Option name | Description | Default value |
|--- |--- |--- |
| triggerText | Text of trigger the link. | `Load more items` |
| triggerTemplate | Allows you to override the trigger html template. | `<div class="ias-trigger" style="text-align: center; cursor: pointer;"><a>{text}</a></div>` |
| triggerOffset | The number of pages which should load automatically. After that the trigger is shown for every subsequent page.<br><br> *Example:* if you set the offset to 2, the pages 2 and 3 (page 1 is always shown) would load automatically and for every subsequent page the user has to press the trigger to load it. | `0` |
| spinnerSrc | The src attribute of the spinner image. |  |
| spinnerTemplate | Allows you to override the spinner html template. | `<div class="ias-spinner" style="text-align: center;"><img src="{src}"/></div>` |
| noneLeftText | Text of the "nothing left" message. | `You reached the end` |
| noneLeftTemplate | Allows you to override the "nothing left" message html template. | `<div class="ias-noneleft" style="text-align: center;">{text}</div>` |
| historyPrev | The selector of the link element that links to the previous page.<br> The href attribute of this element will be used to get the items from the previous page.<br> Make sure there is only one element that matches the selector. | `.previous` |
| overflowContainer | A selector for `div` HTML element to use as an overflow container. | `null` |
### Plugin Events
| Option name | Description | Default value |
|--- |--- |--- |
| eventOnScroll | Triggered when the visitors scrolls. | `null` |
| eventOnLoad | Triggered when a new url will be loaded from the server. | `null` |
| eventOnLoaded | Triggered after a new page was loaded from the server. | `null` |
| eventOnRender | Triggered before new items will be rendered. | `null` |
| eventOnRendered | Triggered after new items have rendered. | `null` |
| eventOnNoneLeft | Triggered when there are no more pages left. | `null` |
| eventOnNext | Triggered when the next page should be loaded.<br> Happens before loading of the next page starts. With this event it is possible to cancel the loading of the next page.<br> You can do this by returning false from your callback. | `null` |
| eventOnReady | Triggered when IAS and all the extensions have been initialized. | `null` |
| eventOnPageChange | Triggered when a used scroll to another page. | `null` |
## Report
- Report any issues [on the GitHub](https://github.com/kop/yii2-scroll-pager/issues).
## License
**yii2-scroll-pager** is released under the MIT License. See the bundled `LICENSE.md` for details.
## Resources
- [Project Page](http://kop.github.io/yii2-scroll-pager)
- [Packagist Package](https://packagist.org/packages/kop/yii2-scroll-pager)
- [Source Code](https://github.com/kop/yii2-scroll-pager)