[英]Item renderer - Rendering a row in flex
I have got a datagrid with three columns. 我有一个包含三列的数据网格。 I have applied two different renderers on different columns (Say Renderer A at column 1 and Renderer B at column 3).
我在不同的列上应用了两个不同的渲染器(在第1列说Renderer A,在第3列说Renderer B)。
Now in set Data() of B (column three's renderer) I am changing a Requiredflag on the basis of some condition. 现在,在B(第三个列的渲染器)的set Data()中,我将根据某些条件更改Requiredflag。 In set Data of A (Column 1's renderer), I am checking the RequiredFlag and changing its style accordingly.
在A的设置数据(列1的渲染器)中,我正在检查RequiredFlag并相应地更改其样式。
The problem is for a Row, A renders before B as it is the first column, so it does not get the updated value of requiredFlag (as the requiredFlag is updated in B). 问题是对于行,因为A是第一列,所以A在B之前渲染,因此它没有获得requiredFlag的更新值(因为requiredFlag在B中更新了)。
So can I somehow render the first column's cell again after rendering third column's cell? 那么,在渲染第三列的单元格之后,我能以某种方式再次渲染第一列的单元格吗? Or if I can render the whole row again after the value of requiredFlag changes in third column's cell.
或者如果我可以在第三列的单元格中requiredFlag的值更改后再次渲染整个行。
See the itemrender as a view, so the renderer itself does not do any computation, just check the value of the object... 将itemrender视为视图,因此渲染器本身不进行任何计算,只需检查对象的值即可。
If I understood correctly I'll do something like that... 如果我理解正确,我会做类似的事情...
(maybe you need to move the check from set data to updatedisplaylist) (也许您需要将支票从设置数据移动到updatedisplaylist)
example: 例:
class Test
{
public var col1:String = "Everything";
public var col3:String = "Cars";
public function get color():uint
{
if (col1 == "Everything")
return 0xff0000;
return 0x000000;
}
}
itemrendererA.mxml itemrendererA.mxml
override public function set data(value:Object):void
{
super.data = value;
if (super.data != null && super.data is Test)
{
// do what you need to do..
lbl1.text = (super.data as Test).col1;
lbl1.setStyle("color", (super.data as Test).color);
}
}
itemrendererB.mxml itemrendererB.mxml
override public function set data(value:Object):void
{
super.data = value;
if (super.data != null && super.data is Test)
{
if ( (super.data as Test).color == 0xff0000)
// do something
else
// do something else
}
}
if that's not what you're looking for, please add some of your code... 如果这不是您想要的,请添加一些代码...
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