/** * The base class for calculating data summaries. The summary is calculated using the * {@link #method!calculate} method. This is overridden in subclasses. * * @since 6.5.0 */Ext.define('Ext.data.summary.Base', { mixins: [ 'Ext.mixin.Factoryable' ], alias: 'data.summary.base', // also configures Factoryable isAggregator: true, factoryConfig: { defaultType: 'base', cacheable: true }, /** * Name of the summary function that appears in the {@link Ext.grid.plugin.Summaries} plugin */ text: 'Custom', constructor: function(config) { var calculate = config && config.calculate; if (calculate) { config = Ext.apply({}, config); delete config.calculate; this.calculate = calculate; } this.initConfig(config); }, /** * This method calculates the summary value of the given records. * @param {Ext.data.Model[]/Object[]} records The records to aggregate. * @param {String} property The property to aggregate on. * @param {String} root The root to extra the data from. * @param {Number} begin The starting index to calculate from. * @param {Number} end The index at which to stop calculating. The item at this * index will *not* be included in the calculation. * * @return {Object} The calculated summary value. * @method calculate */ /** * Extract the underlying value from the data object. * @param {Ext.data.Model} record The record. * @param {String} property The property to extract. * @param {String} root The root on the data object. * @return {Object} The value. * * @protected */ extractValue: function(record, property, root) { var ret; if (record) { if (root) { record = record[root]; } ret = record[property]; } return ret; }}, function() { Ext.Factory.on('dataSummary', function(factory, config) { if (typeof config === 'function') { return factory({ calculate: config }); } // by not returning anything, the normal factory logic is applied });});