Question

Flex 3 - How Do I Display dynamic icons in each row of datagrid (ex. PDF, Word,Excel)

Asked by: AEPUSER

Flex 3 - How Do I Display dynamic icons in each row of datagrid (ex. PDF, Word,Excel)
This is for a list of files that the user uploads, I need to show the proper Icon based on all of the different file types that may be uploaded by the end user.

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Asked On
2009-05-26 at 09:12:34ID24438611
Tags

Flex 3

,

Datagrid Row Icon

Topic

Adobe Flex

Participating Experts
1
Points
500
Comments
5

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Answers

 

by: mplordPosted on 2009-05-26 at 10:07:22ID: 24475212

Breaking the problem into two:
* Acquire icon images
* Display images in datagrid

For the first point, if you're using Air not Flex, you can grab the icon image directly from the a File object.
However if you're intending this to be Flex only, the File class is not available and you'll have to create your own store of icons for different file formats.

For the datagrid, I'd create a component container for the image, and use this as an itemrenderer, dynamically switching which image the image control should display based on the extension of the filename in your underlying dataset.

 

by: AEPUSERPosted on 2009-05-26 at 10:24:49ID: 24475411

Thank you for the reply & I have done this in .net code, adding controls as Image controls and setting the image URL accordingly, but... Can you show/paste some code that demonstrates how to access the individual image URL locations Using Flex 3 only.

Much Appreciated!

 

by: mplordPosted on 2009-05-26 at 11:17:01ID: 24475923

Here's an example - I haven't provided the actual icon assets though, these could be png images in a folder called assets under your src folder.

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
 
	<mx:Script>
		<![CDATA[
			[Bindable] public var filelist:XML = 
				<files>
					<file name="word.doc"/>
					<file name="excel.xls"/>
				</files>
		]]>
	</mx:Script>
 
	<mx:DataGrid horizontalCenter="0" verticalCenter="0" dataProvider="{filelist.file}">
		<mx:columns>
			<mx:DataGridColumn headerText="Icon" dataField="@name">
				<mx:itemRenderer>
					<mx:Component>
						<mx:HBox width="100%" height="100%" horizontalAlign="center">
							<mx:Image id="iconImage" source="" width="16" height="16"/>
						
							<mx:Script>
								<![CDATA[
									override public function set data(value:Object):void
						            {
						                if(value != null)
						                {
						                    super.data = value;
						                    var filename:String = (value as XML).@name;
						                    
						                    switch(filename.substr(filename.indexOf(".",0)))
						                    {
						                    	case ".xls":
						                    		iconImage.source = "./assets/excel.png";
						                    		break;
						                    	case ".doc":
						                    		iconImage.source = "./assets/word.png";
						                    		break;
											}
						                }
						            }
								]]>
							</mx:Script>
						</mx:HBox>
					</mx:Component>
				</mx:itemRenderer>
			</mx:DataGridColumn>
			<mx:DataGridColumn headerText="Filename" dataField="@name"/>
		</mx:columns>
	</mx:DataGrid>
	
</mx:Application>
                                              
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by: mplordPosted on 2009-05-27 at 18:44:59ID: 24489136

Polite request for an update - please remember to close questions if you're issue is resolved, or reply if you need further assistance ;)

 

by: mplordPosted on 2009-06-01 at 20:02:58ID: 24523647

We volunteer our time to help you, you could at least close the question when you've taken what you need.

20120131-EE-VQP-002

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