wangtao
/
fireInternet


			
				
					
						
						
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263
							<!DOCTYPE html>
<html>
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <title>The source code</title>
  <link href="../resources/prettify/prettify.css" type="text/css" rel="stylesheet" />
  <script type="text/javascript" src="../resources/prettify/prettify.js"></script>
  <style type="text/css">
    .highlight { display: block; background-color: #ddd; }
  </style>
  <script type="text/javascript">
    function highlight() {
      document.getElementById(location.hash.replace(/#/, "")).className = "highlight";
    }
  </script>
</head>
<body onload="prettyPrint(); highlight();">
  <pre class="prettyprint lang-js"><span id='Ext-grid-feature-GroupingSummary'>/**
</span> * This feature adds an aggregate summary row at the bottom of each group that is provided
 * by the {@link Ext.grid.feature.Grouping} feature. There are two aspects to the summary:
 *
 * ## Calculation
 *
 * The summary value needs to be calculated for each column in the grid. This is controlled
 * by the summaryType option specified on the column. There are several built in summary types,
 * which can be specified as a string on the column configuration. These call underlying methods
 * on the store:
 *
 *  - {@link Ext.data.Store#count count}
 *  - {@link Ext.data.Store#sum sum}
 *  - {@link Ext.data.Store#min min}
 *  - {@link Ext.data.Store#max max}
 *  - {@link Ext.data.Store#average average}
 *
 * Alternatively, the summaryType can be a function definition. If this is the case,
 * the function is called with an array of records to calculate the summary value.
 *
 * ## Rendering
 *
 * Similar to a column, the summary also supports a summaryRenderer function. This
 * summaryRenderer is called before displaying a value. The function is optional, if
 * not specified the default calculated value is shown. The summaryRenderer is called with:
 *
 *  - value {Object} - The calculated value.
 *  - summaryData {Object} - Contains all raw summary values for the row.
 *  - field {String} - The name of the field we are calculating
 *
 * ## Example Usage
 *
 *     @example
 *     Ext.define('TestResult', {
 *         extend: 'Ext.data.Model',
 *         fields: ['student', 'subject', {
 *             name: 'mark',
 *             type: 'int'
 *         }]
 *     });
 *
 *     Ext.create('Ext.grid.Panel', {
 *         width: 200,
 *         height: 240,
 *         renderTo: document.body,
 *         features: [{
 *             groupHeaderTpl: 'Subject: {name}',
 *             ftype: 'groupingsummary'
 *         }],
 *         store: {
 *             model: 'TestResult',
 *             groupField: 'subject',
 *             data: [{
 *                 student: 'Student 1',
 *                 subject: 'Math',
 *                 mark: 84
 *             },{
 *                 student: 'Student 1',
 *                 subject: 'Science',
 *                 mark: 72
 *             },{
 *                 student: 'Student 2',
 *                 subject: 'Math',
 *                 mark: 96
 *             },{
 *                 student: 'Student 2',
 *                 subject: 'Science',
 *                 mark: 68
 *             }]
 *         },
 *         columns: [{
 *             dataIndex: 'student',
 *             text: 'Name',
 *             summaryType: 'count',
 *             summaryRenderer: function(value){
 *                 return Ext.String.format('{0} student{1}', value, value !== 1 ? 's' : '');
 *             }
 *         }, {
 *             dataIndex: 'mark',
 *             text: 'Mark',
 *             summaryType: 'average'
 *         }]
 *     });
 */
Ext.define('Ext.grid.feature.GroupingSummary', {

    /* Begin Definitions */

    extend: 'Ext.grid.feature.Grouping',

    alias: 'feature.groupingsummary',

    mixins: {
        summary: 'Ext.grid.feature.AbstractSummary'
    },

    /* End Definitions */

    init: function() {
        this.mixins.summary.init.call(this);
    },

<span id='Ext-grid-feature-GroupingSummary-method-getFeatureTpl'>   /**
</span>    * Modifies the row template to include the summary row.
    * @private
    * @return {String} The modified template
    */
   getFeatureTpl: function() {
        var tpl = this.callParent(arguments);

        if (this.showSummaryRow) {
            // lop off the end &lt;/tpl&gt; so we can attach it
            tpl = tpl.replace('&lt;/tpl&gt;', '');
            tpl += '{[this.printSummaryRow(xindex)]}&lt;/tpl&gt;';
        }
        return tpl;
    },

<span id='Ext-grid-feature-GroupingSummary-method-getFragmentTpl'>    /**
</span>     * Gets any fragments needed for the template.
     * @private
     * @return {Object} The fragments
     */
    getFragmentTpl: function() {
        var me = this,
            fragments = me.callParent();

        Ext.apply(fragments, me.getSummaryFragments());
        if (me.showSummaryRow) {
            // this gets called before render, so we'll setup the data here.
            me.summaryGroups = me.view.store.getGroups();
            me.summaryData = me.generateSummaryData();
        }
        return fragments;
    },

<span id='Ext-grid-feature-GroupingSummary-method-getPrintData'>    /**
</span>     * Gets the data for printing a template row
     * @private
     * @param {Number} index The index in the template
     * @return {Array} The template values
     */
    getPrintData: function(index){
        var me = this,
            columns = me.view.headerCt.getColumnsForTpl(),
            i = 0,
            length = columns.length,
            data = [],
            name = me.summaryGroups[index - 1].name,
            active = me.summaryData[name],
            column;

        for (; i &lt; length; ++i) {
            column = columns[i];
            column.gridSummaryValue = this.getColumnValue(column, active);
            data.push(column);
        }
        return data;
    },

<span id='Ext-grid-feature-GroupingSummary-method-generateSummaryData'>    /**
</span>     * Generates all of the summary data to be used when processing the template
     * @private
     * @return {Object} The summary data
     */
    generateSummaryData: function(){
        var me = this,
            data = {},
            remoteData = {},
            store = me.view.store,
            groupField = this.getGroupField(),
            reader = store.proxy.reader,
            groups = me.summaryGroups,
            columns = me.view.headerCt.getColumnsForTpl(),
            remote,
            i,
            length,
            fieldData,
            root,
            key,
            comp,
            summaryRows,
            s,
            sLen,
            convertedSummaryRow;

        for (i = 0, length = groups.length; i &lt; length; ++i) {
            data[groups[i].name] = {};
        }

<span id='Ext-grid-feature-GroupingSummary-cfg-remoteRoot'>        /**
</span>         * @cfg {String} [remoteRoot=undefined]
         * The name of the property which contains the Array of summary objects.
         * It allows to use server-side calculated summaries.
         */
        if (me.remoteRoot &amp;&amp; reader.rawData) {
            // reset reader root and rebuild extractors to extract summaries data
            root = reader.root;
            reader.root = me.remoteRoot;
            reader.buildExtractors(true);
            summaryRows = reader.getRoot(reader.rawData);
            sLen      = summaryRows.length;

            // Ensure the Reader has a data conversion function to convert a raw data row into a Record data hash
            if (!reader.convertRecordData) {
                reader.buildExtractors();
            }

            for (s = 0; s &lt; sLen; s++) {
                convertedSummaryRow = {};

                // Convert a raw data row into a Record's hash object using the Reader
                reader.convertRecordData(convertedSummaryRow, summaryRows[s]);
                remoteData[convertedSummaryRow[groupField]] = convertedSummaryRow;
            }

            // restore initial reader configuration
            reader.root = root;
            reader.buildExtractors(true);
        }

        for (i = 0, length = columns.length; i &lt; length; ++i) {
            comp = Ext.getCmp(columns[i].id);
            fieldData = me.getSummary(store, comp.summaryType, comp.dataIndex, true);

            for (key in fieldData) {
                if (fieldData.hasOwnProperty(key)) {
                    data[key][comp.id] = fieldData[key];
                }
            }

            for (key in remoteData) {
                if (remoteData.hasOwnProperty(key)) {
                    remote = remoteData[key][comp.dataIndex];
                    if (remote !== undefined &amp;&amp; data[key] !== undefined) {
                        data[key][comp.id] = remote;
                    }
                }
            }
        }
        return data;
    }
});
</pre>
</body>
</html>