itemrenderer

问题 What I am trying to accomplish to to get financial data in my Flex Datagrid to be color-coded--green if it's positive; red if it's negative. This would be fairly straightforward if the column I want colored was part of the dataProvider. Instead, I am calculating it based on two other columns that are part of the dataProvider. That would still be fairly straightforward because I could just calculate it again in the ItemRenderer, but another part of the calculation is based on the value of a

问题 What I am trying to accomplish to to get financial data in my Flex Datagrid to be color-coded--green if it's positive; red if it's negative. This would be fairly straightforward if the column I want colored was part of the dataProvider. Instead, I am calculating it based on two other columns that are part of the dataProvider. That would still be fairly straightforward because I could just calculate it again in the ItemRenderer, but another part of the calculation is based on the value of a

问题 I'm not yet as much into Java as I'd like to be, so I find my current task to be quite a bit challenging: A chart showing data gathered in another class. A slider whose end value is determined by the last entry of in the dataset used in the chart. The playbutton currently doesn't do anything except letting the slider tick in steps of 5 until it is paused again. My problem right now is: I am supposed to highlight one item at a time in the chart based on which value the slider currently shows.

问题 I'm not yet as much into Java as I'd like to be, so I find my current task to be quite a bit challenging: A chart showing data gathered in another class. A slider whose end value is determined by the last entry of in the dataset used in the chart. The playbutton currently doesn't do anything except letting the slider tick in steps of 5 until it is paused again. My problem right now is: I am supposed to highlight one item at a time in the chart based on which value the slider currently shows.

问题 I want to get rid of the typical Flex roll-over color in list-based components, and to display my own style of roll-over rendering. Setting useRollOver to 'false' is not an option , since disabling that will also make the List.isItemHighlighted() function to always return false. My custom renderer relies on that function. Can it be so hard? Is there no way of setting that roll-over color to transparent? Is there some other way for my renderer to figure out if an item is highlighted? Thanks!

问题 Well, I created one but it has a bunch of issues: if I click in the rendered column I get an error: TypeError: Error #1009: Cannot access a property or method of a null object reference. at Test/clickHandler()[C:\Documents and Settings\NDEGRAEV\workspace-dummy\Test\src\Test.mxml:27] at Test/___Test_AdvancedDataGrid1_click()[C:\Documents and Settings\NDEGRAEV\workspace-dummy\Test\src\Test.mxml:31] the text is stuck to the top left corner of the cell; the cell's background doesn't change to the

问题 I have DataGrid with Dynamic Columns. The columns will contain ItemRendrer. I'm not familiar with dynamically adding ItemRenderer. My code is: var column:DataGridColumn = new DataGridColumn(); column.headerText = item; column.width=150; column.dataField=item; column.itemRenderer = WorkNatureRenderer ; cols.push(column); WorkNatureRenderer is a mxml component.( Hbox containing TextInput and Button ) <?xml version="1.0" encoding="utf-8"?> <mx:HBox xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns

问题 I'm binding an array of items to a data grid using ItemRenderer . I use the data variable to control the bindable data. I also have someComponentVariable that need be inserted into every row but its declared at the component scope, so the data grid doesn't seem to reconize it (compile error). How can I use this variable ( someComponentVariable ) inside the ItemRenderer ? Code Example <mx:DataGrid id="userBonusesGrid" width="100" height="248" showHeaders="false" wordWrap="true"> <mx:columns>

问题 I have an item renderer that checks an external source for display information. If that information changes, I want to force all item renderer instances to check it. What's the best way for force all the item renderers in a list or grid to either commitProperties or execute some other method? I've read that resetting the grid.itemRenderer property will make them all initialize. I've also received the suggestion to iterate recursively through all the grid's children and call

问题 I don't understand why when we change data on dataprovider , all the itemRenderers of the impacted column are called ? Here is a little example of my problem : application : <?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" creationComplete="application1_creationCompleteHandler(event)"> <fx:Script> <![CDATA[ import mx.collections