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eflex-ember-power-select-infinity

v1.0.0

Published

Ember Power Select with Infinity Paging and Occlusion Rendering

Downloads

2

Readme

ember-power-select-infinity

To Infinity & Beyond

This addon provides a power select which uses occlusion rendering to infinitely load and search for a large list of items.

Installation

ember install @gavant/ember-power-select-infinity

Usage

To use power-select-infinity you just declare it in a template. Both search and loadMore must return a promise to that power-select-infinity can display the loading indicator. The paging is left up to you, since some API's use different formats for paging. Some API's declare page=1, others take in the last items ID. Either way, power-select-infinity just provides a loadMore action where you can load data however your API requires.

If your using ember-cli-sass in your project, an import statement will automatically be added to your project.

Your Component

{{#power-select-infinity
    search=(action 'search')
    loadMore=(action 'loadMore')
    selected=selected
    onchange=(action (mut selected))
    as |name|}}
        {{name}}
{{/power-select-infinity

Your Controller

Paging using page numbers

export default Controller.extend({
    page: 1,
    actions: {
        search(term) {
            //API call
            let page = get(this, 'page');
            return get(this, 'ajax').request(`names?page=${page}&search=${term}`);
        },
        loadMore(term) {
            let page = get(this, 'page');
            let newPage = get(this, 'page');
            return get(this, 'ajax').request(`names?page=${newPage}&search=${term}`).then(() => {
                set(this, 'page', newPage);
            });
        }
    }
});

Paging using page offset & limit

export default Controller.extend({
    page: 1,
    actions: {
        search(term) {
            return get(this, 'ajax').request(`names?search=${term}`);
        },
        async loadMore(term, select) {
            return get(this, 'ajax').request(`names?search=${term}&offset=${get(select, 'resultsCount')}&limit=10`);
        }
    }
});

If you want the power select to open when the input is focused, just pass a list of options via the options parameter.

{{#power-select-infinity
    options=options
    search=(action 'search')
    loadMore=(action 'loadMore')
    selected=selected
    onchange=(action (mut selected))
    as |name|}}
        {{name}}
{{/power-select-infinity

If your using a complex objects as the options, you need to tell power-select-infinity what value to display when an option is selected using

{{#power-select-infinity
    options=options
    search=(action 'search')
    loadMore=(action 'loadMore')
    selected=selected
    onchange=(action (mut selected))
    extra=(hash labelPath="name")
    as |user|}}
        {{user.name}}
{{/power-select-infinity

In the example above, Im using a user object which has a property of name that I want to display when selected.

There are some options you can pass to https://github.com/html-next/vertical-collection, which is what we use for the occlusion rendering. The three options are estimateHeight, bufferSize, and staticHeight. Read the vertical collection documentation for what they do and how to use them

{{#power-select-infinity
    options=options
    estimateHeight=75
    bufferSize=10
    staticHeight=true
    search=(action 'search')
    loadMore=(action 'loadMore')
    selected=selected
    onchange=(action (mut selected))
    as |name|}}
        {{name}}
{{/power-select-infinity

You can also customize the loading component by passing in your own loadingComponent property.

{{#power-select-infinity
    options=options
    search=(action 'search')
    loadMore=(action 'loadMore')
    selected=selected
    onchange=(action (mut selected))
    loadingComponent='my-loading-component'
    as |name|}}
        {{name}}
{{/power-select-infinity

Contributing

Installation

  • git clone <repository-url>
  • cd ember-power-select-infinity
  • npm install

Linting

  • npm run lint:js
  • npm run lint:js -- --fix

Running tests

  • ember test – Runs the test suite on the current Ember version
  • ember test --server – Runs the test suite in "watch mode"
  • ember try:each – Runs the test suite against multiple Ember versions

Running the dummy application

For more information on using ember-cli, visit https://ember-cli.com/.

License

This project is licensed under the MIT License.