frameworks/projects/spark/asdoc/en_US/spark/components/examples/DataGridMasterDetailExample.mxml

<?xml version="1.0" encoding="utf-8"?>
<!--

  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
  the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.

-->

<!--
A simple combination of Spark DataGrid and Form that demonstrates using the DataGrid 
selectedItem property to connect "master" and "detail" views.

The value of the DataGrid's selectedItem property is the dataProvider item that's 
currently selected.  This example displays a Datagrid and a Form, and the Form
displays various aspects of the selectedItem.  Elements of the Form bind to the 
DataGrid's selectedItem, so when the selection changes the form is updated
automatically.  In a configuration like this, the DataGrid is the "master" view
and the Form is the "detail" view.

The selectedItem bindings are not valid unless there's a non-null selection, so
we've specified requireSelection="true" for the DataGrid.  Note also that we've 
used a CurrencyFormatter to convert Numbers that represent prices, to nicely formatted
and localized strings.

-->

<s:Application 
    xmlns:fx="http://ns.adobe.com/mxml/2009"
    xmlns:s="library://ns.adobe.com/flex/spark">
    
    <fx:Declarations>
        <s:CurrencyFormatter id="cf" useCurrencySymbol="true"/>
    </fx:Declarations>    
    
    <s:Panel title='Spark DataGrid Control Example demonstrates the use of selectedItem to connect "master" and "detail" views'
             width="75%" height="75%" 
             horizontalCenter="0" verticalCenter="0">
        
        <s:VGroup horizontalAlign="justify" left="5" right="5" top="5" bottom="5">
            <s:DataGrid id="dataGrid" requestedRowCount="4" requireSelection="true">
                <s:columns>
                    <s:ArrayList>
                        <s:GridColumn dataField="name" headerText="Name"/>
                        <s:GridColumn dataField="price" headerText="Price"/>
                    </s:ArrayList>
                </s:columns>
                
                <s:ArrayCollection>
                    <s:DataItem key="1000" name="Abrasive" price="100.11" call="false"/>
                    <s:DataItem key="1001" name="Brush" price="110.01" call="true"/>
                    <s:DataItem key="1002" name="Clamp" price="120.02" call="false"/>
                    <s:DataItem key="1003" name="Drill" price="130.03" call="true"/>
                    <s:DataItem key="1004" name="Epoxy" price="140.04" call="false"/>
                    <s:DataItem key="1005" name="File" price="150.05" call="true"/>
                    <s:DataItem key="1006" name="Gouge" price="160.06" call="false"/>
                    <s:DataItem key="1007" name="Hook" price="170.07" call="true"/>
                    <s:DataItem key="1008" name="Ink" price="180.08" call="false"/>
                    <s:DataItem key="1009" name="Jack" price="190.09" call="true"/>             
                </s:ArrayCollection>
            </s:DataGrid>
            
            <s:Scroller height="100%">
                <s:Group>
                    <s:Form width="100%" height="100%">
                        <s:FormHeading label="Selected Product Detail" textAlign="center"/>            
                        <s:FormItem label="Product Key:">
                            <s:Label text="{dataGrid.selectedItem.key}"/>
                        </s:FormItem>
                        <s:FormItem label="Product Name:">
                            <s:Label text="{dataGrid.selectedItem.name}"/>
                        </s:FormItem>
                        <s:FormItem label="Product Price:">
                            <s:HGroup verticalAlign="baseline">
                                <s:Label text="{cf.format(dataGrid.selectedItem.price)}"/>
                                <s:Label text="Tax: {cf.format(dataGrid.selectedItem.price * 0.0975)}"/>
                                <s:Label text="Total: {cf.format(dataGrid.selectedItem.price * 1.0975)}"/>
                            </s:HGroup>
                        </s:FormItem>              
                        <s:FormItem label="Followup Needed:" >
                            <s:HGroup verticalAlign="baseline">
                                <s:Label text="{(dataGrid.selectedItem.call) ? 'Yes' : 'No'}"/>
                                <s:Button label="Call Now"
                                          enabled="{dataGrid.selectedItem.call}"
                                          click="dataGrid.selectedItem.call=false"/>
                            </s:HGroup>                              
                        </s:FormItem>            
                    </s:Form>
                </s:Group>
            </s:Scroller>
        </s:VGroup>
    </s:Panel>
</s:Application>