Ember-advanced-combobox

Ember combobox that can (beside others):

• filter items
• sort items
• multiselect items
• mobile support ("almost" as native)
• lazy loading of combobox items

• Ember.js v3.20 or above
• Ember CLI v3.20 or above
• Node.js v12 or above

We use BrowserStack to make sure this addon works on all browsers.

Installation

Warning: works for Ember >= 2.8.0

ember install ember-advanced-combobox

This addon uses FontAwesome by default - at the moment you have to provide it for yourself (this addon does not install it for you). You can however use any font icon set you want, but do not forget to configure this addon (more in section Global configuration -> propery icons)

Basic usage

{{combo-box  
  valueList=valueList
  selected=selectedItem
  itemKey='itemKey'
  itemLabel='itemLabel'  
  onSelected=(action 'onSelected')  
}}

For more usage examples see dummy application.

| Configuration option | Description | |----------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------| | valueList | Array of items in combobox - can be a plain JSON array or Ember MutableArray (note: either valueList, valuePromise or lazyCallback must be provided) | | valuePromise | Promise - when evaluated, the result will be used as valueList (note: either valueList, valuePromise or lazyCallback must be provided) | | lazyCallback |callback to retrieve new combobox list items - usefull for lazy-loaded comboboxes (note: either valueList, valuePromise or lazyCallback must be provided) | itemKey | Name of the property of valueList items to be used is key to identify items | | itemLabel | Name of the property of valueList items to be used as; can be string or function label | | selected | Key of currently selected item | | onSelected | Action callback that will be called when user selects an item | |disabledWhenEmpty | Combobox will be disabled, when there are no options in dropdown menu (recommened to set to false when used with valuePromise) (default: true)| | multiselect | boolean value; it true user can select multiple items (default is false) | | canFilter | boolean value; if true user can filter values in the dropdown - filter is case- and accent- insensitive fulltext search | | disabled | boolean value | | orderBy | Name of the property of valueList items to be used to sort the items in dropdown. If orderBy is not provided, items in dropdown will not be sorted. | | minLazyCharacters | overrides minLazyCharacters (see global configuration section)| | preselectFirst | boolean value; if true combobox will automatically select the first item in the dropdown. | | onDropdownShow | Action callback called when dropdown is going to show | | onDropdownHide | Action callback called when dropdown is going to hide | | showDropdownButton | boolean value; if false the dropdown button will be hidden (default is true) | | itemLabelForSelectedPreview | string value of function; customize how selected value looks like in the combobox (only for single select combobox); default is the same property as itemLabel |
| showLabelWhenDisabled | boolean; false when combobox should be empty when disabled (default is false) |
| showChooseLabel | boolean; false 'chooseLabel' should be shown - see global configuration as well (default is true) |
| showEmptySelectionLabel | boolean; false 'emptySelectionLabel' should be shown - see global configuration as well (default is true) |
| maxDropdownHeight | number; max height of dropdown (in pixels) - optional, if not set, dropdown will be stretched to the max height to be still visible in the page |
| emptySelectionLabel | overrides emptySelectionLabel (see global configuration section)| | chooseLabel | overrides chooseLabel (see global configuration section)| | pagination| boolean (default: false); true if you want items in dropdown to be fetched with pagination| | pageSize| number (default: 10)| | showDropdownOnClick| boolean (default: true); true if dropdown should be opened on click| | confirmInputValueOnBlur| boolean (default: false)| when set to true, user can enter value into the filter and DID NOT select filtered value in the dropdown - he can just click outside the combobox, and the value will still be selected| | hideSelected| boolean (default: false)| when set to true selected value will be hidden| |onDisabledCallback| callback that will be called when component changes its disabled or labelOnly state| |dropdownIcon| custom css class for dropdown icon| |onDropdownIconClicked| callback called when dropdown icon is clicked, if callback returns false, dropdown is not opened afterwards| |noValueLabel| default value, if empty 'valueList' is provided|

Also note that if there is only one item available in combobox, it will be automatically selected.

Styling

Most often you would like to style the mobile version of combobox. To do this you can make use of following CSS classes:

• .combobox-mobile-dialog - dialog itself (container for all other elements)
• .header - DIV above the dialog
• .footer - DIV below the dialog (contains buttons)
• .btn-cancel - button to cancel dialog
• .btn-accept - button to confirm selection (for multiselect combobox only)

Global configuration

| Configuration option | Description | Default value | |-----------------------|--------------------------------------------------------------------------------------------------------|--------------------| | emptySelectionLabel | Label shown when no value is selected | "" | | chooseLabel | Label shown when dropdown is visible | "Choose:" | | multiselectValueLabel | Label shown when there are multiple values selected - it appends number of selected items at the end | "Selected items: " | | asyncLoaderStartLabel | Label shown when valuePromise is being evaluated | "Loading..." | | emptyValueList | Label shown when there are no items in dropdown | "No items" | | mobileFilterPlaceholder| Placeholder for filter input in mobile dropdown | "Enter filter here" | | mobileOkButton| Text for "OK" button in mobile dropdown | "Confirm" | | mobileCancelButton| Text for "Cancel" button in mobile dropdown | "Cancel" | | lazyDebounceTime | debounce time (in msec) when typing - used for lazy loading of comobobox items | 1000 | | minLazyCharacters | minimum number of characters to trigger lazy load fetch | 3 | | icons | JSON of font icons used | see example below | |onDisabledCallback| | callback that will be called when component changes its disabled or labelOnly state|

There are 2 ways to configure the combobox: using config/environment.js or by injecting service ember-advanced-combobox/adv-combobox-configuration-service:

environment.js configuration

Add this to your config/environment.js file:

  var ENV = {

  //------------------------
  "ember-advanced-combobox": {
    emptySelectionLabel: "",
    chooseLabel: "Choose:",
    multiselectValueLabel: "Selected items: ",
    asyncLoaderStartLabel: "Loading...",
    emptyValueList: 'No items',
    mobileFilterPlaceholder: 'Enter filter here',
    mobileOkButton: 'Confirm',
    mobileCancelButton: 'Cancel',
    lazyDebounceTime: 1000,
    minLazyCharacters: 3,
    icons: {
      dropdown: 'fa fa-chevron-down',
      'checkbox-checked': 'fa fa-check-square-o',
      'checkbox-unchecked': 'fa fa-square-o',
      loading: 'fa fa-circle-o-notch fa-spin fa-fw'
    }
  }
  //---------------------------

}

Configuration service ember-advanced-combobox/adv-combobox-configuration-service enables you to customize the combobox at runtime (e.g. beacuse of translations):

  comboboxConfig: Ember.inject.service('adv-combobox-configuration-service');

  this.get('comboboxConfig').setConfiguration("emptySelectionLabel", "some value");