A multi-select component for CanJS

Demo

Here is a JSBin demo.

Installation

npm install multi-select --save

You can use any of the builds in the dist folder to meet your project needs.

Usage

Using CanJS's built-in support for StealJS, you can now import the module directly inside your templates. For example:

<can-import from="multi-select"/>

<multi-select select-all>
  <option value="1">One</option>
  <option value="2" selected>Two</option>
  <option value="3" disabled>Three</option>
</multi-select>

<multi-select select-all="default" selected-values="{selectedValues}">
  {{#each items}}
    <option value="{{value}}" {{#if isSelected}}selected{{/if}}>{{text}}</option>
  {{/each}}
</multi-select>

<multi-select list="{items}" selected-items="{selectedItems}"></multi-select>

<multi-select list="{items}"
              value-prop="id"
              text-prop="name"
              selected-prop="isChecked"
              selected-items="{selectedItems}"
              select-all></multi-select>

<multi-select select-all
              all-selected-value="-1"
              {^selected-values}="selectedValues"
              {^are-all-selected}="areAllSelected">
  <option value="-1">All</option>
  <option value="1">One</option>
  <option value="2">Two</option>
  <option value="3" selected>Three</option>
</multi-select>

With all-selected-value the selectedValues will result in [-1].

Event delegation:

<multi-select {list}="items" (itemclick)="onItemClick"></multi-select>

<multi-select {list}="items" click-event-name="myevent" (myevent)="onItemClick"></multi-select>

var onItemClick = function(context, el, ev, params){
    console.log('Item was clicked with value=%s and isSelected=%s ', params.value, params.isSelected);
}

For can-2.2.x and older there will be an additional event triggered on the element and can be captured like this on the parent component with events:

events: {
    'multi-select itemclick': function(context, ev, params){
        console.log('Item was clicked!', params);
        // -> {value: 5, isSelected: true, selectedValues: [5,6,7]}
    }
}

API

• list: a list of items to use if no tags are rendered inside the component.
• selected: an array of selected items as objects with value and text properties.
• selected-values: an array of selected values.
• selected-items: an array of selected items if items are passed as list.
• are-all-selected: boolean, true if all options are selected.
• (itemclick): the handler will be called with 4 arguments by default:
• content,
• element,
• ev,
• params: {value: <itemValue>, isSelected: <boolean>, selectedValues: <array of selected values>}

Options:

• select-all: show "Select All" option. If value "default" is passed then all options will be preselected. Default: false.
• select-all-text: string to be shown for "Select All" option. Default: 'Select All'.
• all-selected-text: string to be shown when all items are selected. Default: 'All Selected'.
• all-selected-value: a value to be returned when all options are selected (e.g. if its -1, then selectedValues will result in [-1]).
• value-prop: property name to look up for value. Default: 'value'
• text-prop: property name to look up for text. Default: 'text'.
• selected-prop: property name to look up to check if an item should be selected. Default: 'isSelected'.
• disabled-prop: property name to look up to check if an item should be disabled. Default: 'isDisabled'.
• click-event-name: property name to look up to check if an item should be disabled. Default: 'itemclick'.

Changelog

0.3.0 - By default, when there is one item in the list, when that item is checked, the allSelectedText value will be the text of the checked item.

Contributing

Pull requests are welcome.

Authors

• Marshall Thompson
• Ilya Fadeev