fancy-select

A unidirectional combobox component based on the aria spec. See a live demo here.

Simple Example

var mercury = require('mercury')
var FancySelect = require('fancy-select')
require('fancy-select/style') // include default stylesheet

var component = FancySelect({
  options: [{
    value: 'c',
    label: 'Consistency'
  }, {
    value: 'a',
    label: 'Availability'
  }, {
    value: 'p',
    label: 'Partition Tolerance'
  }],
  placeholder: 'Choose Two'
})

mercury.app(document.body, component.state, FancySelect.render)

Usage

var component = FancySelect(config = {})

component.state

An instance of observ-struct. Holds the state for this component. All parts of the state are subclasses of observ.

• state.options the full option tree
• state.value the current value of this combobox
• state.filtered the option tree after it has been passed through the current filter function.
• state.query the current query string
• state.active the path of the active option in the listbox
• state.isOpen whether the dropdown is currently open
• state.placeholder the current placeholder text
• state.separator the key code for the current separator

FancySelect.render

The render function to be passed to a main-loop or placed into another template.

config

All the config options can be changed on the fly with the set function with a matching name:

• component.setOptions(options)
• component.setValue(value)
• component.setFilter(filter)
• component.setActions(actions)
• component.setQuery(query)

To create a custom render function, call FancySelect.customRender(templates)

• var render = FancySelect.customRender(templates)

config.options = []

An array of option objects to use as the data source for this combobox. Will be passed to option-tree-navigate.

The properties in an option object used by fancy-select are:

• option.value Any option with a value will be selectable. Options without a value will be rendered as option groups.
• option.label By default, will be used as the label for an option
• option.options An array of option objects. The children of this option.

config.value = []

An array of option objects to use as the initial value. Will be passed to option-tree-navigate. Child options will not be shown when an option with children is selected.

config.filter = function (option, query, value) { ... }

The function to use when filtering which options are available to select. Gets passed to option-tree-filter. The default filter function includes these rules:

• always show any option whose value starts with __
• omit any option whose value is identical to an option already in the value
• omit any option whose value and label do not match the query string (case insensiteve).

config.actions = {}

A hash of option values to the functions that should be called when that value is selected. Will be passed to option-select-action.

templates = {}

A hash of template names to render functions. The tree of default templates is nested in this order with these names:

combobox
  textbox
    input
  listbox
    group
      option
        optionlabel

A render function is passed the state, a template function, for inserting other templates, and then any other arguments it was called with.

var h = require('virtual-hyperscript')

var templates = {
  option: function (state, template, option, path) {
    return h('div.option', [
      // insert another named template like this.
      // any arguments after the template name are
      // passed to its render function
      template('optionlabel', option, path)
    ])
  }
}

var render = FancySelect.customRender(templates)

config.placeholder = ''

The string to use as the placeholder text in the textbox.

config.separator = 188 (comma)

The key code of a key to consider a separator. Pressing the separator key will trigger the same action as pressing enter.

styles

Include the default stylesheet with require('fancy-select/style')