Sproutcore PagedArrayController

gistfile1.js

/**
* Provides paged content based on a larger result set.
*/
App.PagedArrayController = SC.ArrayProxy.extend({

	content: [],

	/**
	*	Subclasses should define the allResultsBinding to bind to the full set
	* of results to be paged through
	*/
	allResults: [],

	/*
	*	Must replace entire pagination object for changes to propogate.
	*/
	pagination: {
		start: 0,
		limit: 50
	},

	_allResultsDidChange: function() {

		var results = this.get('allResults'),
				pagination = this.get('pagination'),
				lastIndex = pagination.start + pagination.limit,
				allResultsLength = this.get('allResults').get('length');

				if(lastIndex > allResultsLength) {
					lastIndex = allResultsLength;
				}

				this.set('content', results.slice(pagination.start, lastIndex));

	}.observes('*allResults.[]', 'pagination')

});