Extend a component that extends already a spark list ItemRenderer

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• need help with change in spark list itemRenderer

  Hey guys... so I have a spark list, where I've made available to tileLayout and I use the converter component to display an image and two buttons in each tile... what im trying to do is when you hover over each tile I want buttons fade in and out... and by default... I need to no visible buttons...

  I had pimples fade in and out when you hover over the point... but the problem is that I have when I initialize the application buttons are all visible... If there is no sence...

  any help is greatly appretiated!

  Here is the code I have... can you tell me what changes I need to make...

  <s:List id="searchResultImages" borderVisible="false" dataProvider="{searchImages}" width="100%" height="100%">
       <s:layout>
            <s:TileLayout requestedColumnCount="6" horizontalGap="30" columnWidth="100" rowHeight="85" />
       </s:layout>
       <s:itemRenderer>
            <fx:Component>
                 <s:ItemRenderer>
                      <s:states>
                           <s:State name="hovered" />
                           <s:State name="normal" />
                      </s:states>
                      <s:transitions>
                           <s:Transition fromState="normal" toState="hovered">
                                <s:Fade id="hoveredFade" targets="{[delBtn, editBtn]}" alphaFrom="0.0" alphaTo="1.0" duration="1000" />
                           </s:Transition>
                           <s:Transition fromState="hovered" toState="normal">
                                <s:Fade id="normalFade" targets="{[delBtn, editBtn]}" alphaFrom="1.0" alphaTo="0.0" duration="1000" />
                           </s:Transition>
                      </s:transitions>
                      <s:VGroup>
                           <mx:Image source="{data.fileLoc}" width="100" height="50" useHandCursor="true" buttonMode="true" verticalCenter="0" />
                           <s:HGroup>
                                <mx:LinkButton id="delBtn" label="DEL" skin="{null}" color="#0184C7" rollOverColor="#333333" useHandCursor="true" 
                                                  buttonMode="true" />
                                <mx:LinkButton id="editBtn" label="EDIT" skin="{null}" color="#0184C7" rollOverColor="#333333" useHandCursor="true" 
                                                  buttonMode="true" />
                           </s:HGroup>
                      </s:VGroup>
                 </s:ItemRenderer>
            </fx:Component>
       </s:itemRenderer>
  </s:List>
  

  Hello

  With a lot of intelligence are already integrated into state transitions, when for example the transition fading knows when to fade in or fade out, get your components placed in the States you want is all that is necessary.

  This is a simple example, but as you can see there is almost no code involved...

  http://gumbo.flashhub.NET/Cyber/ source included

  David.

• Spark list ItemRenderer 'data' is null.

  I use the same code in one place that I use in another, and still the event creationComplete that they prepare in the itemRenderer, the first line of code, trace("data") returns "null".

  This code has been fine for months of work and suddenly stopped working with no explanation.  I lost two days within period of fixation which should not be broken and I'm no closer to a solution.  Very frustrated. Any help appreciated - greatly.

  Puddleglum.

  = Component relevant code containing spark list = Output from the console displayed in the form of comments

  [Bindable]

  public var itemArray:ArrayCollection = new ArrayCollection();

  [Bindable]

  private var gap: uint = 6;

  private var file:File;

  private var fileStream:FileStream;

  private var toolXML:XML;

  protected function creationCompleteHandler (): void

  {

  trace ("FUNCTION MyLibraryToolsPanel creationCompleteHandler()");

  file = parentApplication.getFileOperations () .getToolFilepath ();

  trace ("file:" + file.url);

  }

  private void loadTool(xmlFilepath:File,_xmlFilename:String):void

  {

  trace ("MyLibraryToolsPanel FUNCTION loadTool ("+ xmlFilepath.url +"," + xmlFilename + ")"); / / MyLibraryToolsPanel FUNCTION loadTool (app-storage: / Tools/User000000, 000000Tool1371827886983.xml)

  var xmlFile:File = xmlFilepath.resolvePath (xmlFilename);

  If (xmlFile.Exists)

  {

  fileStream = new FileStream();

  fileStream.open (xmlFile, FileMode.READ);

  toolXML = XML (fileStream.readUTFBytes (fileStream.bytesAvailable));

  fileStream.close ();

  var obj:Object = new Object();

  obj.xmlFilepath = xmlFilepath;

  obj.xmlFilename = xmlFilename;

  obj.XML = toolXML;

  trace ("obj:" + obj); / / obj: [object Object]

  trace ("FUNCTION MyLibraryToolsPanel loadTool\n"+obj.xml.toXMLString ());   / / returns the XML when uncommented

  itemArray.addItemAt (obj, itemArray.length);

  }

  on the other

  {

  trace ("MyLibraryToolsPanel FUNCTION loadTool XMLFILE does NOT EXIST");  / / This will trigger never

  }

  < s:List id = "itemList".

  useVirtualLayout = "false".

  Changing = "listChangingHandler (Event)" "

  Click = "Event.stopPropagation (); »

  touchTap = "event.stopPropagation (); »

  scrollSnappingMode = "tip".

  Height = "height of {}.

  interactionMode = 'touch '.

  explicitHeight = "{height}".

  dropEnabled = "false".

  dragEnabled = "false".

  dragMoveEnabled = "false".

  allowMultipleSelection = "false".

  alternatingItemColors = "[0xe6e6fa, 0xF0F8ff].

  dataProvider = "{itemArray}.

  itemRenderer = "converters. MyLibraryToolsPanelListItemRenderer ".

  horizontalScrollPolicy = "off".

  verticalScrollPolicy = "on".

  borderVisible = "false".

  visible = "{ItemArray.Length > 0} '"

  includeInLayout = "{itemList.visible}" "

  Width = "100%" >

  < s:layout >

  < s:VerticalLayout id = "itemListVerticalLayout" variableRowHeight = "false" gap = "0" / >

  < / s:layout >

  < / s:List >

  < s:Label id = "noToolsMsg" text = "no tool saved available." horizontalCenter = "0" verticalAlign = "middle" red = "0" visible = "{itemArray.length == 0} ' includeInLayout ="{noToolsMsg.visible}"/ >"

  < / s:Group >

  = Renderer code that contains relevant sections =.

  protected function creationCompleteHandler (): void

  {

  trace ("FUNCTION MyLibraryToolsPanelListItemRenderer creationCompleteHandler"); / / MyLibraryToolsPanelListItemRenderer FUNCTION creationCompleteHandler

  trace ("data:" + data);  / / data: null

  dataProxy = new ObjectProxy (data);

  ...

  Looks like I'll change to use instead of the creationComplete dataChange in all my custom converters.  I can't believe I lost 2 days and more hair because of something so trivial as multithreading.

  Really... You cannot MAKE something before that data is passed and the rendering engine is INSTANTIATED ONLY when an element is added to the dataProvider... Then... the procedure.   Data added to dataProvider-online Insantiate WITH object relevant-Online Layout/rendering/upgrade to day-online THEN creationComplete();   Duh.  creationComplete is a misnomer if you don't even have the relevant data that you use to CREATE the instance.

  No doubt this would be avoided if the BUG that places the dummy rendering engine IN the dataProvider have been set, but as it is - not, been resolved, I have no choice but to disable put in virtual.   Sage, grumble, winge winge winge-grouse.

• return data to spark list itemrenderer

  Everyone is not how to return data from the itemrender for a spark list. say I had a checkbx in my itemrenderer how can we retrieve this info to my component principal if his selected or not. I looked on the datagrid itemeditor but I really use rather a spark list. Thank you

  Hello

  itemRenderer should be used only as RENDERER. All chenges must be made in the data.

  So if there is a check box, you must add click eventListener and change the property in the data to see whether he is selected.

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  in Flex 3.x the VBox property was property of the icon that you can use to set the images in the elements of the list as well as the label property. How can I get the same thing in a Flex 4 spark list component?

  I would like something like 'iconField' property set to the list item, so that my itemrenderer can be generic and not worry for a specific type of object is passed in.

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