js-arraycollection

A Javascript Implementation of Array Collection (using UndercoreJS)

Installation

npm:

npm install js-arraycollection

bower

bower install js-arraycollection

Usage

coffeescript example:

(inst = new ArrayCollection [{value:'foo'}, {value:'bar'}]
).on 'collectionChanged', (data)->
  data.keys().forEach (key, val)->
  	console.log "#{key}:#{JSON.stringify val}"
inst.addItem value:'baz'
inst.getItemAt(0).value = 'huzzah'
inst.removeItemAt inst.length() - 1

javascript example:

var inst;
(inst = new ArrayCollection( [{value:'foo'}, {value:'bar'}] )
).on( 'collectionChanged', function (data) {
  data.keys().forEach( function (key, val) {
  	console.log(""+key+": "+JSON.stringify( val ) );
  });
});
inst.addItem( {value:'baz'} );
inst.getItemAt(0).value = 'huzzah';
inst.removeItemAt( inst.length() - 1 );

Events

Added

Triggered when an item is added to the collection

Updated

Triggered when an item's properties have been updated

Removed

Triggered when an item has been removed

Replaced

Triggered when an item has been replaced with another

Reset

Triggered when the collection has been reset to it's default state

Methods

length()

Returns the current length of the Array

setSource(list)

Sets the source array triggering an added event

clearSource()

Resets the source array resulting in a reset event

addAll(list)

Adds all passed list members to source triggering an added event

addItem(object)

Add an individual item to the source triggering an added event

addItemAt(object, offset)

Adds an individual item to the source at given offset triggering an added event

contains(object)

Checks if source contains specified item

getItemAt( index )

Get item at given index

getItemIndex( object )

Get index of given item in source

removeAll()

Removes all members in source triggering a reset event

removeItemAt( index )

Removes item at given index triggering remove event

setItemAt( item, index)

Replaces item at index with given item triggering replaced event