[CLOSED] Change icon in CommandColumn Listener

**RRD** · Jul 16, 2013, 1:39 PM

I have the next code:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="RowExpander.aspx.cs" Inherits="Ext.Net.Examples.RowExpander" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>GridPanel with RowExpander Plugin - Ext.NET Examples</title>
    <link href="/resources/css/examples.css" rel="stylesheet" />
    <style>
        .plusIcon
        {
            background-image: url(resources/images/addcomment.gif);
        }

        .starIcon
        {
            background-image: url(resources/images/hascomment.png);
        }

        .collapseIcon {
            background-image: url(resources/images/collapse.gif);
        }
    </style>
    <script>
        var template = '<span style="color:{0};">{1}</span>';

        var change = function (value) {
            return Ext.String.format(template, (value > 0) ? "green" : "red", value);
        };
        var pctChange = function (value) {
            return Ext.String.format(template, (value > 0) ? "green" : "red", value + "%");
        };
        var ExpandFn = function (e1, e2, e3, e4, e5) {
            if (e2 === "ExpandCollapse") {
                var grid = App.GridPanel1,
                    rowExpander = grid.getRowExpander(),
                    expandedRows = rowExpander.getExpanded();

                for (var i = 0; i < expandedRows.length; i++) {
                    if (expandedRows[i].index === e3.index) {
                        rowExpander.collapseRow(e3.index);
                        //here I need to change IconCls
                        return;
                    }
                }
                rowExpander.expandRow(e3.index);
                //and here I need to change IconCls
            }
        };                

        function PrepareToolbarFn(grid, toolbar, rowIndex, record) {
            var btn = toolbar.items.get(0);
            var recordClass = record.get("iconClass");
            if (recordClass === "collapseIcon") {
                btn.setIconCls("collapseIcon");
            }
            if (rowIndex % 2 === 1) {
                btn.setIconCls("plusIcon");
            } else {
                btn.setIconCls("starIcon");
            }
        }
    </script>
</head>
<body>
    <form id="Form1" runat="server">
        <ext:ResourceManager ID="ResourceManager1" runat="server" />

        <h1>GridPanel with RowExpander Plugin</h1>

        <ext:GridPanel
            ID="GridPanel1"
            runat="server"
            Title="RowExpander"
            Collapsible="true"
            AnimCollapse="true"
            Icon="Table"
            Width="600"
            Height="600">
            <Store>
                <ext:Store ID="Store1" runat="server">
                    <Model>
                        <ext:Model ID="Model1" runat="server">
                            <Fields>
                                <ext:ModelField Name="company" />
                                <ext:ModelField Name="price" Type="Float" />
                                <ext:ModelField Name="change" Type="Float" />
                                <ext:ModelField Name="pctChange" Type="Float" />
                                <ext:ModelField Name="lastChange" Type="Date" DateFormat="M/d hh:mmtt" />
                                <ext:ModelField Name="industry" />
                                <ext:ModelField Name="desc" />
                            </Fields>
                        </ext:Model>
                    </Model>                    
                </ext:Store>
            </Store>            
            <ColumnModel ID="ColumnModel1" runat="server">
                <Columns>
                    <ext:Column ID="Column1" runat="server" Text="Company" DataIndex="company" Flex="1" />
                    <ext:Column ID="Column2" runat="server" Text="Price" DataIndex="price">
                        <Renderer Format="UsMoney" />
                    </ext:Column>
                    <ext:Column ID="Column3" runat="server" Text="Change" DataIndex="change">
                        <Renderer Fn="change" />
                    </ext:Column>
                    <ext:Column ID="Column4" runat="server" Text="Change" DataIndex="pctChange">
                        <Renderer Fn="pctChange" />
                    </ext:Column>
                    <ext:DateColumn ID="DateColumn1" runat="server" Text="Last Updated" DataIndex="lastChange" />
                    <ext:CommandColumn runat="server">
                        <PrepareToolbar Fn="PrepareToolbarFn" />
                        <Commands>
                            <ext:GridCommand CommandName="ExpandCollapse" />
                        </Commands>
                        <Listeners>
                            <Command Fn="ExpandFn" />
                        </Listeners>
                    </ext:CommandColumn>
                </Columns>
            </ColumnModel>
            <View>
                <ext:GridView ID="GridView1" runat="server" TrackOver="true"/>                                    
            </View>
            <SelectionModel>
                <ext:RowSelectionModel ID="RowSelectionModel1" runat="server" Mode="Multi" />
            </SelectionModel>
            <Plugins>
                <ext:RowExpander ID="RowExpander1" runat="server">
                    <Listeners>
                        <Collapse Handler="Ext.Msg.notify('Row collapsed', 'Row # ' + rowIndex);" Delay="1" />
                        <Expand Handler="Ext.Msg.notify('Row expanded', 'Row # ' + rowIndex);" Delay="1" />
                    </Listeners>
                    <Template ID="Template1" runat="server">
                        <Html>
                            <p><b>Company:</b> {company}</p>
                            <br />
                            <p><b>Summary:</b> {desc}</p>
                        </Html>
                    </Template>
                </ext:RowExpander>
            </Plugins>
        </ext:GridPanel>
    </form>
</body>
</html>

using System;

namespace Ext.Net.Examples
{
    public partial class RowExpander : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            this.Store1.DataSource = new object[]
            {
                new object[] { "3m Co", 71.72, 0.02, 0.03, "9/1 12:00am", "Manufacturing" },
                new object[] { "Alcoa Inc", 29.01, 0.42, 1.47, "9/1 12:00am", "Manufacturing" },
                new object[] { "Altria Group Inc", 83.81, 0.28, 0.34, "9/1 12:00am", "Manufacturing" },
                new object[] { "American Express Company", 52.55, 0.01, 0.02, "9/1 12:00am", "Finance" },
                new object[] { "American International Group, Inc.", 64.13, 0.31, 0.49, "9/1 12:00am", "Services" },
                new object[] { "AT&T Inc.", 31.61, -0.48, -1.54, "9/1 12:00am", "Services" },
                new object[] { "Boeing Co.", 75.43, 0.53, 0.71, "9/1 12:00am", "Manufacturing" },
                new object[] { "Caterpillar Inc.", 67.27, 0.92, 1.39, "9/1 12:00am", "Services" },
                new object[] { "Citigroup, Inc.", 49.37, 0.02, 0.04, "9/1 12:00am", "Finance" },
                new object[] { "E.I. du Pont de Nemours and Company", 40.48, 0.51, 1.28, "9/1 12:00am", "Manufacturing" },
                new object[] { "Exxon Mobil Corp", 68.1, -0.43, -0.64, "9/1 12:00am", "Manufacturing" },
                new object[] { "General Electric Company", 34.14, -0.08, -0.23, "9/1 12:00am", "Manufacturing" },
                new object[] { "General Motors Corporation", 30.27, 1.09, 3.74, "9/1 12:00am", "Automotive" },
                new object[] { "Hewlett-Packard Co.", 36.53, -0.03, -0.08, "9/1 12:00am", "Computer" },
                new object[] { "Honeywell Intl Inc", 38.77, 0.05, 0.13, "9/1 12:00am", "Manufacturing" },
                new object[] { "Intel Corporation", 19.88, 0.31, 1.58, "9/1 12:00am", "Computer" },
                new object[] { "International Business Machines", 81.41, 0.44, 0.54, "9/1 12:00am", "Computer" },
                new object[] { "Johnson & Johnson", 64.72, 0.06, 0.09, "9/1 12:00am", "Medical" },
                new object[] { "JP Morgan & Chase & Co", 45.73, 0.07, 0.15, "9/1 12:00am", "Finance" },
                new object[] { "McDonald\"s Corporation", 36.76, 0.86, 2.40, "9/1 12:00am", "Food" },
                new object[] { "Merck & Co., Inc.", 40.96, 0.41, 1.01, "9/1 12:00am", "Medical" },
                new object[] { "Microsoft Corporation", 25.84, 0.14, 0.54, "9/1 12:00am", "Computer" },
                new object[] { "Pfizer Inc", 27.96, 0.4, 1.45, "9/1 12:00am", "Medical" },
                new object[] { "The Coca-Cola Company", 45.07, 0.26, 0.58, "9/1 12:00am", "Food" },
                new object[] { "The Home Depot, Inc.", 34.64, 0.35, 1.02, "9/1 12:00am", "Retail" },
                new object[] { "The Procter & Gamble Company", 61.91, 0.01, 0.02, "9/1 12:00am", "Manufacturing" },
                new object[] { "United Technologies Corporation", 63.26, 0.55, 0.88, "9/1 12:00am", "Computer" },
                new object[] { "Verizon Communications", 35.57, 0.39, 1.11, "9/1 12:00am", "Services" },
                new object[] { "Wal-Mart Stores, Inc.", 45.45, 0.73, 1.63, "9/1 12:00am", "Retail" }
            };

            this.Store1.DataBind();

            const string desc = "this.desc_data = \"Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Sed metus nibh, sodales a, porta at, " +
                                "vulputate eget, dui. Pellentesque ut nisl. Maecenas tortor turpis, interdum non, sodales non, " +
                                "iaculis ac, lacus. Vestibulum auctor, tortor quis iaculis malesuada, libero lectus bibendum purus, " +
                                "sit amet tincidunt quam turpis vel lacus. In pellentesque nisl non sem. Suspendisse nunc sem, " +
                                "pretium eget, cursus a, fringilla vel, urna.<br/><br/>Aliquam commodo ullamcorper erat. " +
                                "Nullam vel justo in neque porttitor laoreet. Aenean lacus dui, consequat eu, adipiscing eget, " +
                                "nonummy non, nisi. Morbi nunc est, dignissim non, ornare sed, luctus eu, massa. Vivamus eget quam. " +
                                "Vivamus tincidunt diam nec urna. Curabitur velit.\";";

            string dataID = string.Concat(this.Store1.ClientID, ".proxy.data");
            string push = string.Format(@"for (var i = 0; i < {0}.length; i++) {{{0}[i].push(desc_data);}}", dataID);

            this.ResourceManager1.RegisterClientScriptBlock("desc_data", desc);
            this.ResourceManager1.RegisterOnReadyScript(push);            
        }
    }
}

I need to change icon in ExpandFn (you can find comment). How can I get toolbar in ExpandFn?

**Daniil** · Jul 16, 2013, 4:01 PM

Hi @RRD,

Please update from the SVN trunk and use (read the comment):

var ExpandFn = function (column, command, record, recordIndex, cellIndex) {
    if (command === "ExpandCollapse") {
        var grid = column.grid,
            rowExpander = grid.getRowExpander();

        rowExpander.toggleRow(recordIndex, record);
        record.set("iconClass", rowExpander.isExpanded(recordIndex) ? "collapse icon" : "expand icon"); // the PrepareToolbarFn will be called after this line. There you should change the icon.
    }
};

**RRD** · Jul 22, 2013, 4:57 PM

I've updated from SVN and PrepareToolbarFn haven't called.

**Baidaly** · Jul 22, 2013, 8:10 PM

Hello!

I don't see in your model a field with Name iconClass so there is no change in record and therefore your prepareToolbar handler is not called:

<ext:Store ID="Store1" runat="server">
	<Model>
		<ext:Model ID="Model1" runat="server">
			<Fields>
				<ext:ModelField Name="company" />
				<ext:ModelField Name="price" Type="Float" />
				<ext:ModelField Name="change" Type="Float" />
				<ext:ModelField Name="pctChange" Type="Float" />
				<ext:ModelField Name="lastChange" Type="Date" DateFormat="M/d hh:mmtt" />
				<ext:ModelField Name="industry" />
				<ext:ModelField Name="desc" />
				<ext:ModelField Name="iconClass" />
			</Fields>
		</ext:Model>
	</Model>                    
</ext:Store>

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