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pillbox

v1.0.0-beta2

Published

Small library for creating lists of tags in containers.

Downloads

4

Readme

Pillbox.js

Build Status

Pillbox.js is a UI container for your (optionally pill-styled) tag labels. The pillbox contains pills (tags), and each pill is aware of its state. Events are emitted whenever something interesting happens.

Usage

Installation

Pillbox.js is available as a CommonJS module. Soon, it will be available via npm, like so:

npm install --save pillbox

And you can require it in your project:

var Pillbox  = require('pillbox');

Contstruction

The Pillbox variable above is a constructor that takes an object with the following properties:

  • container -- The parent DOM element that will contain each "pill"
  • pills -- An optional array containing the initial collection of pills

Pills are created with the following options:

  • key -- String, used to identify the pill, must be unique
  • value -- String that will be displayed on the rendered pill
  • remove -- Optional boolean, determines if pills should have close buttons when no template is present.
  • template -- An optional function, should return a string of HTML given an object parameter with a value property.
  • states -- An optional array of strings to be used as initial states
var pb = new Pillbox({
  container: document.querySelector('.pill-container'),
  pills: [{/* see pill options above */}]
});

Pillbox Methods

addPill( options )

You don't have to add pills initially, though. You can easily add them after creating pb.

pb.addPill({
    key: 'roots',
    value: 'Root Vegetables',
    template: require('tag.jade'),
    states: ['disabled']
});

removePill( key )

You can also remove a pill if you know its key:

pb.removePill('roots');

getPill( key )

You can retrieve an instance of a pill if you know its key. This allows you to check or set a pill's state.

pb.getPill('roots').removeState('disabled');

keys()

You can also request an array of all keys, which would allow you to iterate over each pill and remove it or modify its state:

var pillKeys = pb.keys();
_.each(pillKeys, function (key) {
  pb.removePill(key);
});

Pill Methods

Managing State

Each pill has an array of states. States translate to classes in the DOM, and they can be modified and queried with the following methods.

  • setState(state) -- Adds a new state based on the given string
  • removeState(state) -- Removes an existing state
  • hasState(state) -- returns true or false depending on the existence of a given state
  • cleanState() -- removes all states from the pill

Interacting with the DOM

  • draw(parent) -- Appends an element representing the pill into the given parent
  • erase() -- Removes the pill's element from the DOM

Events

Pills emit several events:

  • "click" -- When a pill is clicked
  • "state:add" -- When a state is added to a pill
  • "state:remove" -- When a state is removed from a pill
  • "request:remove" -- When a pill requests to be removed (e.g. when the x is clicked)

However, getting pill instances is a hassle, so all pill events are also forwarded through Pillbox with a "pill:" prefix. Instead of listening for "request:remove" on each pill instance:

_.each(pb.keys(), function (key) {
  pb.getPill(key).on('request:remove', function () {
    pb.removePill(key);
  });
});

You can instead listen for the event on pb directly, which is more concise:

pb.on('pill:request:remove', function (pill) {
  pb.removePill(pill.key);
});

In addition to forwarding Pill events, Pillbox emits two events of its own:

  • "pill:add" -- Emitted after a new pill is added. The pill object is passed to the callback.
  • "pill:remove" -- Emitted after a pill is removed. The pill's key is passed to the callback.

Development

With npm and gulp installed globally, you can run a development build (which includes file watching) by running the following in the project directory:

npm install
gulp