Files
Brandy Carney a7f1f4daa7 refactor(components): update to use shadow DOM and work with css variables
- updates components to use shadow DOM or scoped if they require css variables
- moves global styles to an external stylesheet that needs to be imported
- adds support for additional colors and removes the Sass loops to generate colors for each component
- several property renames, bug fixes, and test updates

Co-authored-by: Manu Mtz.-Almeida <manu.mtza@gmail.com>
Co-authored-by: Adam Bradley <adambradley25@gmail.com>
Co-authored-by: Cam Wiegert <cam@camwiegert.com>
2018-07-09 12:57:21 -04:00
..

ion-infinite-scroll

The Infinite Scroll component calls an action to be performed when the user scrolls a specified distance from the bottom or top of the page.

The expression assigned to the ionInfinite event is called when the user reaches that defined distance. When this expression has finished any and all tasks, it should call the complete() method on the infinite scroll instance.

Infinite Scroll Content

The ion-infinite-scroll component has the infinite scroll logic. It requires a child component in order to display content. Ionic uses its ion-infinite-scroll-content component by default. This component displays the infinite scroll and changes the look depending on the infinite scroll's state. It displays a spinner that looks best based on the platform the user is on. However, the default spinner can be changed and text can be added by setting properties on the ion-infinite-scroll-content component.

Custom Content

Separating the ion-infinite-scroll and ion-infinite-scroll-content components allows developers to create their own content components, if desired. This content can contain anything, from an SVG element to elements with unique CSS animations.

Properties

disabled

boolean

If true, the infinite scroll will be hidden and scroll event listeners will be removed.

Call enable(false) to disable the infinite scroll from actively trying to receive new data while scrolling. This method is useful when it is known that there is no more data that can be added, and the infinite scroll is no longer needed.

position

string

The position of the infinite scroll element. The value can be either top or bottom. Defaults to bottom.

threshold

string

The threshold distance from the bottom of the content to call the infinite output event when scrolled. The threshold value can be either a percent, or in pixels. For example, use the value of 10% for the infinite output event to get called when the user has scrolled 10% from the bottom of the page. Use the value 100px when the scroll is within 100 pixels from the bottom of the page. Defaults to 15%.

Attributes

disabled

boolean

If true, the infinite scroll will be hidden and scroll event listeners will be removed.

Call enable(false) to disable the infinite scroll from actively trying to receive new data while scrolling. This method is useful when it is known that there is no more data that can be added, and the infinite scroll is no longer needed.

position

string

The position of the infinite scroll element. The value can be either top or bottom. Defaults to bottom.

threshold

string

The threshold distance from the bottom of the content to call the infinite output event when scrolled. The threshold value can be either a percent, or in pixels. For example, use the value of 10% for the infinite output event to get called when the user has scrolled 10% from the bottom of the page. Use the value 100px when the scroll is within 100 pixels from the bottom of the page. Defaults to 15%.

Events

ionInfinite

Emitted when the scroll reaches the threshold distance. From within your infinite handler, you must call the infinite scroll's complete() method when your async operation has completed.

Methods

complete()

Call complete() within the infinite output event handler when your async operation has completed. For example, the loading state is while the app is performing an asynchronous operation, such as receiving more data from an AJAX request to add more items to a data list. Once the data has been received and UI updated, you then call this method to signify that the loading has completed. This method will change the infinite scroll's state from loading to enabled.

waitFor()

Pass a promise inside waitFor() within the infinite output event handler in order to change state of infiniteScroll to "complete"


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