add extjs 6.0.1 sources

[extjs.git] / extjs / packages / ux / classic / src / data / PagingMemoryProxy.js

/**\r
 * Paging Memory Proxy, allows to use paging grid with in memory dataset\r
 */\r
Ext.define('Ext.ux.data.PagingMemoryProxy', {\r
    extend: 'Ext.data.proxy.Memory',\r
    alias: 'proxy.pagingmemory',\r
    alternateClassName: 'Ext.data.PagingMemoryProxy',\r
    \r
    constructor: function() {\r
        Ext.log.warn('Ext.ux.data.PagingMemoryProxy functionality has been merged into Ext.data.proxy.Memory by using the enablePaging flag.');    \r
        this.callParent(arguments);\r
    },\r
\r
    read : function(operation, callback, scope){\r
        var reader = this.getReader(),\r
            result = reader.read(this.data),\r
            sorters, filters, sorterFn, records;\r
\r
        scope = scope || this;\r
        // filtering\r
        filters = operation.filters;\r
        if (filters.length > 0) {\r
            //at this point we have an array of  Ext.util.Filter objects to filter with,\r
            //so here we construct a function that combines these filters by ANDing them together\r
            records = [];\r
\r
            Ext.each(result.records, function(record) {\r
                var isMatch = true,\r
                    length = filters.length,\r
                    i;\r
\r
                for (i = 0; i < length; i++) {\r
                    var filter = filters[i],\r
                        fn     = filter.filterFn,\r
                        scope  = filter.scope;\r
\r
                    isMatch = isMatch && fn.call(scope, record);\r
                }\r
                if (isMatch) {\r
                    records.push(record);\r
                }\r
            }, this);\r
\r
            result.records = records;\r
            result.totalRecords = result.total = records.length;\r
        }\r
        \r
        // sorting\r
        sorters = operation.sorters;\r
        if (sorters.length > 0) {\r
            //construct an amalgamated sorter function which combines all of the Sorters passed\r
            sorterFn = function(r1, r2) {\r
                var result = sorters[0].sort(r1, r2),\r
                    length = sorters.length,\r
                    i;\r
                \r
                    //if we have more than one sorter, OR any additional sorter functions together\r
                    for (i = 1; i < length; i++) {\r
                        result = result || sorters[i].sort.call(this, r1, r2);\r
                    }                \r
               \r
                return result;\r
            };\r
    \r
            result.records.sort(sorterFn);\r
        }\r
        \r
        // paging (use undefined cause start can also be 0 (thus false))\r
        if (operation.start !== undefined && operation.limit !== undefined) {\r
            result.records = result.records.slice(operation.start, operation.start + operation.limit);\r
            result.count = result.records.length;\r
        }\r
\r
        Ext.apply(operation, {\r
            resultSet: result\r
        });\r
        \r
        operation.setCompleted();\r
        operation.setSuccessful();\r
\r
        Ext.Function.defer(function () {\r
            Ext.callback(callback, scope, [operation]);\r
        }, 10);\r
    }\r
});\r