frishy/FastGroupingCollection/src/TestGC2.mxml

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
               xmlns:s="library://ns.adobe.com/flex/spark" 
               xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600" 
               xmlns:fastdatagridhelpers="fastdatagridhelpers.*">
    
    <fx:Script>
        <![CDATA[
            import com.frishy.collections.FastGroupingCollection;
            
            import model.PropertyChangeBindableObject;
            
            import mx.collections.ArrayCollection;
            import mx.collections.Grouping;
            import mx.collections.GroupingCollection2;
            import mx.collections.GroupingField;
            import mx.collections.SummaryField2;
            import mx.collections.SummaryRow;
            import mx.events.FlexEvent;
            
            private var ac:ArrayCollection;
            private var gc2:GroupingCollection2;
            
            protected function addRandomItem():void
            {
                var item:PropertyChangeBindableObject = new PropertyChangeBindableObject();
                item.fillAllProperties();
                ac.addItem(item);
            }
            
            protected function removeRandomItem():void
            {
                if (ac.length == 0)
                    return;
                
                var indexToRemove:int = Math.floor(ac.length * Math.random());
                ac.removeItemAt(indexToRemove);
            }
            
            protected function adg_preinitializeHandler(event:FlexEvent):void
            {
                ac = new ArrayCollection();
                
                addRandomItem();
                addRandomItem();
                addRandomItem();
                
                gc2 = new GroupingCollection2();
                gc2.source = ac;
                gc2.grouping = getTestGrouping();
                gc2.refresh();
                
                adg.dataProvider = gc2;
            }
            
            private static const NUM_GROUPS:int = 3;
            
            private function testGroupingFunction(item:Object, field:GroupingField):String
            {
                var myNumber:Number = item[field.name] as Number;
                var groupId:Number = Math.floor(myNumber * NUM_GROUPS);
                return groupId.toString();
            }
            
            private function getTestGrouping():Grouping
            {
                var grouping:Grouping = new Grouping();
                var gf:GroupingField = new GroupingField("property3");
                gf.groupingFunction = testGroupingFunction;
                
                var sr:SummaryRow = new SummaryRow();
                var sf:SummaryField2 = new SummaryField2();
                sf.dataField = "property9";
                sf.summaryOperation = "SUM";
                var sf2:SummaryField2 = new SummaryField2();
                sf2.summaryOperation = "AVG";
                sf2.dataField = "property6";
                sr.fields = [sf, sf2];
                gf.summaries = [sr];
                
                var gf2:GroupingField = new GroupingField("property6");
                gf2.groupingFunction = testGroupingFunction;
                grouping.fields = [gf, gf2];
                
                return grouping;
            }
            
        ]]>
    </fx:Script>
    
    <fx:Declarations>
        <!-- Place non-visual elements (e.g., services, value objects) here -->
    </fx:Declarations>
    
    <s:layout>
        <s:VerticalLayout />
    </s:layout>
    
    <s:Button label="add random item" click="addRandomItem()" />
    
    <s:Button label="remove random item" click="removeRandomItem()" />
    
    <fastdatagridhelpers:FastAdvancedDataGrid id="adg" height="600" width="1200" 
                                              horizontalScrollPolicy="on" displayItemsExpanded="true"
                                              preinitialize="adg_preinitializeHandler(event)">
        <fastdatagridhelpers:columns>
            <mx:AdvancedDataGridColumn dataField="property3" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property0" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property1" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property2" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property4" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property5" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property6" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property7" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property8" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property9" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property10" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property11" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property13" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property12" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property14" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property15" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property16" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property17" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property18" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property19" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property20" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property21" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property22" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property23" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property24" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property25" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property26" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property27" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property28" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
            <mx:AdvancedDataGridColumn dataField="property29" width="80" itemRenderer="fastdatagridhelpers.ChangeWatcherAdvancedDataGridItemRenderer" />
        </fastdatagridhelpers:columns>
    </fastdatagridhelpers:FastAdvancedDataGrid>
</s:Application>