Flex :: Extending DataGridColumn For Custom Sorting Function
Aug 25, 2009
I extended the DataGridColumn because I wanted to include a custom itemToLabel function (to be able to show nested data in the DataGrid. See this question.
Anyways, it also needs a custom sorting function. So I have written the sorting function like so:
private function mySortCompareFunction(obj1:Object, obj2:Object):int{
var currentData1:Object = obj1;
var currentData2:Object = obj2;
[Code].....
Whenever I try to sort the column, I get the error "Error: Find criteria must contain at least one sort field value."
When I debug and step through each step, I see that the first few times, the function is being called correctly, but towards the end, this error occurs.
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Similar Posts:
Oct 28, 2011
I have a DatagridColumn in flex with two names, TYPE and NAME. Now, when I am sorting a datagridcolumn, TYPE, it sorts the type using sortcomparefunction and gives the result which contains grouped and sorted order of elements. Ex. if I sort for type I get elements in pdf, doc, ppt in grouped order, but they are internally not sorted, ex: for the pdf part, I have elements such as:
TYPE NAME
pdf A1.pdf
pdf X2.pdf
pdf B1.pdf
Here the filetypes are sorted, but for a particular filetype, the elements are not, please notice that B1 occurs after X2, which should be sorted. Is there a way I can sort the second datagridcolumn after sorting the first one according to filetype extensions? I am using sortcomparefunction for sorting the elements according to type , which works fine. The signature is:
private function sortTheTypeColumn(itemA:Object, itemB:Object):int
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Apr 30, 2010
I have a datagrid that I want to add a column of radio button using AS3 (instead of mxml). I was able to do this with a custom itemRenderer.
var dgc:DataGridColumn = new DataGridColumn();
dgc.itemRenderer = new ClassFactory(com.mypackage.RadioBtnColumnItemRenderer);
In my RadioBtnColumnItemRenderer.mxml, I have a box with a radioButton... like so:
<?xml version="1.0" encoding="utf-8"?>
<mx:Box xmlns:mx="[URL]" horizontalAlign="center" verticalAlign="middle">
<mx:RadioButton id="btnRadio" groupName="btnRadioSelect"/>
</mx:Box>
When I run the application, the radio button shows up in the column as it should. However, I cannot select just ONE of the radio buttons. I am able to select all of them, but I don't want this... I want the ability to select one and then if I select another one, then the first one is unselected and the current one becomes selected (just like you would expect radio buttons to work).
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Jun 18, 2010
Is there anyway to create a custom item editor based on the dataField value? For example:
<mx:DataGrid editable="true" dataProvider="{_actionArr}" id="prop">
<mx:column>
<mx:DataGridColumn headerText="Component" editable="false" dataField="label"/>
[code]....
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Jun 6, 2011
I am trying to sort big array using actionscript 3. The problem is that i have to use custom sorting function which is painfully slow and leads to flash plugin crash.
Below is a sample code for custom function used to sort array by length of its members:
[Code]...
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Jun 30, 2009
I'm trying to create a custom sort function. This function will sort the pegs in a certain row by their row number (0: lowest -- numRows - 1: highest)For context, here is Adobe's description for the Array sort method: http://livedocs.adobe.com/flash/9.0/ActionScriptLangRefV3/Array.html#sort()
My array-building function:
Code:
public function getPegsInRow(row:int):Array
{
var pegRowArray:Array = new Array()
for(var i:int = 0; i < pegArray.length; i++)
[code]....
Unfortunately, the array does not get sorted correctly.
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Jan 10, 2011
I am following this page to create a custom preloader extending Sprite to load an animation SWF, but it is not working (the animation SWF is not displaying): [URL]. I know the Animation.swf file is okay, because if I load it into the main app it displays and runs. The preloader works if an image is loaded by the preloader instead of the animation SWF.
test.mxml (main app)
BTW, I typically have many more lines of ComboBox in the app to force the preloader to display, but limiting number of lines here.
CustomPreloaders.SparkAnimationProgressBar.as
package customPreloaders {
import flash.display.;
import flash.events.;
import flash.net.;
import flash.utils.;
[Code] .....
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May 28, 2011
I'm extending the Flex 3 panel component. I need to figure out the width of the title's text. Because, title is a private variable in panel, I can't access it via title.width.I know the font, fontsize (14), and length of the title (which will vary). Knowing this info is there a way to calculate how many pixels wide the title is?
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May 11, 2011
Here are the strings this array can contain (in the correct order):
'recipients,' 'columnSelector,' 'headerImageLink,' 'title,' 'mainText,' 'text,' 'bodyImage'
Now, to sort them, I obviously don't want to do something like this:
if( a == 'columnSelector' && b == 'headerImageLink' ) return -1;
else if( a == 'columnSelector' && b == 'title' ) return -1;
else if( a == 'columnSelector' && b == 'mainText' ) return -1;
So that brings up an interesting thing. I know you can optimize the above some using something like this:
if( a == 'columnSelector' || a == 'bodyImage' ) return -1;
This would get the last two, but lately I have just wanted community input on issues I have had in the past. So the question is, what is the best way to write a custom sort, using a relatively random order (not alphabetical, etc)?
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Feb 22, 2010
The sorting capabilities that are available in Flex assume that you have access to all the data, but I'm using a paginated datagrid (with custom code), the datagrid is binded to an ArrayCollection instance, on the next page call I change the data of the dataprovider and everything works ok, but for sorting I need to override the click or event better override the sort method of the arraycollection
All this is to be able to do a server-side sorting.
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Oct 11, 2009
I am creating a Datagrid in AS3, and adding a sort function to a column. However, this sort function does never get called. Any ideas?
dg_gruppenUebersicht = new NestedDataGrid;
dg_gruppenUebersicht.sortableColumns = true;
dg_gruppenUebersicht.dataProvider = arrCol_gruppenTnAkt;
[code]....
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Feb 3, 2011
What I'd like to do: create an MXML component with some children, then extend it via MXML to create a new component with more children, without losing the original set.In other words
create a component bc.mxml
<?xml version="1.0" encoding="utf-8"?>
<s:BorderContainer xmlns:fx="http://ns.adobe.com/mxml/2009"
[code].....
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Feb 12, 2012
I made the transition to AS3 two years ago, but I still carry with me old AS2 habits. Could someone please help me understand how I extend a custom class correctly. I have the bad habit of putting most of my code in one .as file (the Document class), but I use a few custom classes now and then. What I'm tring to figure out is how I would extend a class of this type:
public class ClipDragger {
private var _clip:MovieClip;
public function ClipDragger(clip:MovieClip) {
_clip = clip;
[code]....
For example I would like to add a MOUSE_MOVE listener, and also add actions to the drag function.
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Dec 14, 2010
Say I have a document class called index, where I set up some variables and methods and include a class.
I get this error:
Error: Error #2136: The SWF file file: index.swf contains invalid data.
at com::index/initIndex()
at com::index()
[Code]...
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Oct 30, 2006
im trying to port my code to as3 but i stumbled on a problem i have no idea how to fix.
error report:
Code:
verify PointAirFri$iinit()
stack:
scope: [global Object$ Point$ PointAirFri$]
locals: PointAirFri Number Number Number
0:getlocal0
stack: PointAirFri
scope: [global Object$ Point$ PointAirFri$]
locals: PointAirFri Number Number Number
1:pushundefined
stack: PointAirFri void?
scope: [global Object$ Point$ PointAirFri$]
locals: PointAirFri Number Number Number
2:setslot 14
stack:
scope: [global Object$ Point$ PointAirFri$]
locals: PointAirFri Number Number Number
4:abs_jump 78424138 45
stack:
scope: [global Object$ Point$ PointAirFri$]
locals: PointAirFri Number Number Number
0:getlocal0
stack: PointAirFri
scope: [global Object$ Point$ PointAirFri$]
locals: PointAirFri Number Number Number
1:pushscope
stack:
scope: [global Object$ Point$ PointAirFri$] PointAirFri
locals: PointAirFri Number Number Number
2:getlocal0
stack: PointAirFri
scope: [global Object$ Point$ PointAirFri$] PointAirFri
locals: PointAirFri Number Number Number
3:constructsuper 0
VerifyError: Error #1063: Argument count mismatch on Point$iinit(). Expected 3, got 0.
at PointAirFri$iinit()
at docClass/::init()
at docClass$iinit()
this is how the defined the classes:
Code:
package{
public class Point
{
vars
public function verlet(a)
{
code
}
public function savePoint()
{;
code
}
public function restore()
{
code
}
public function Point(__x:Number, __y:Number, __fr:Number)
{
x = __x;
y = __y;
dx = 0;
dy = 0;
vx = 0;
vy = 0;
friction = __fr;
}
}
}
package{
import Point;
public class PointAirFri extends Point
{
private var airFriction;
public override function verlet (a)
{
code
}
public function PointAirFri(__x:Number, __y:Number, __afr:Number)
{
x = __x;
y = __y;
dx = 0;
dy = 0;
vx = 0;
vy = 0;
airFriction=__afr;
}
}
}
if anyone has any idea why that error happens please enlighten me
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Dec 29, 2010
extending Object on a custom class that would normally be unextended?
package qnx.notificationManager
{
public class Notification extends Object
{
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Sep 22, 2011
I'm doing a project where I manually create sorting algorithms.After several tests I found out that my heapsort is way quicker than quicksort (I think it should be the other way around), my selection sort is also faster than insertion sort.I'm testing using integers from -100 to 100, randomly generated, 5000 values in an array (I modified this number several times, still the same problems).My quicksort isn't in-place.I thought that maybe flash's recursive functions are slow? my heapsort uses loops, unlike quicksort. That's just a hypothesis though. I start a timer, run the class's exec() function, stop the timer and calculate the elapsed time.[code]
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Jul 10, 2009
I've got a simple class:
package somepackage
{
import flash.display.MovieClip;
public class NewMc extends MovieClip{ public var myVar:String = "something";}}
And there is a question now: how can I assign a "real" MovieClip object to my created-class object?
I mean: var realMc:MovieClip = new MovieClip();
[Code]...
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Oct 21, 2010
How to make a custom item renderer in flex 4 without extending the ItemRenderer class?I need this because I want to use a custom class that is extended in all my components. as this item renderer for me is like a component, i would like to extend that custom class.[code]the ThumbView doesn't extend the ItemRenderer
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Nov 10, 2009
I have a question on coustom sort..I have a datagrid for which one coloum has a itemrenderer. I need to sort a coloum based on the value in the item renderer. In the dataprovider for the datagrid i have a numeric value. Based on the numeric value in dataprovider i have a String associated with that value which is shown in UI. I need to sort based on the statusLabel associated with the numeric value.
[Code]...
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Jun 27, 2010
I'm building an application using flex 4.
Using <mx:DataGrid> to display a table.
I would like to add a <s:GlowFilter> to a DataGridColumn. How can I do so?
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Apr 1, 2008
I want to call a function from another function's parameter but I don't know how and don't know if it is possible.I've considered this as a solution but it didn't worked.
Code:
function myFunc(target_mc:MovieClip, nX:Number, nY:Number, cFunc:Function) {
target_mc._x += nX;
targen_mc._y += nY;
target_mc.onPress = cFunc;
[code]....
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Jul 8, 2009
Is it possible to put an itemrenderer on the DataGrid itself rather than a datagridcolumn? I could only find examples for datagridcolumn. I want a generic itemrenderer on all the items in a datagrid...
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Nov 27, 2009
I have this DataGrid:
<mx:DataGrid id="myDataGrid">
<mx:columns>
<mx:DataGridColumn dataField="colA" headerText="Column A:" width="40"
[code].....
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Mar 3, 2010
I am using a custom componenet based off of text as an itemRenderer for a dataGrid that is displaying an XMLList. I want to be able to re-use this itemRenderer for multiple columns, how do I access the dataGridColumn so I know which field to assign to the text value?
super.data gives me the whole XML item, super.parentDocument gives me the whole DataGrid
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Nov 9, 2010
I have a DataGrid with 3 DataGridColumns. All 3 of them have separate dataFields.I need to get the datafields into an ArrayCollection and pass it to a funciton. I dont want to hard code the ArrayCollection.
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Apr 20, 2011
how to concate two datafield in a datagridcolumn?
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Jun 29, 2009
this cursor follow works in a single frame on the main timeline with a stop action :
// kisses start and follow cursor
addEventListener(Event.ENTER_FRAME, start_kisses);
function start_kisses(event:Event) {
staged_kiss_mc.x = stage.mouseX;
[code]....
How can this same function be called in various frames throughout the main timeline? For instance, say the above code is on frame one and the "staged_kiss_mc" is extended from frames 1 to 10. On all frames there is also a stop action (along with additional code, content, etc.)How can the function "start_kisses" be activated on each of the 10 frames in the same way it is on frame 1 ?Is it necessary to add a new Event Listener? Do new functions need to be coded for each frame, such as start_kisses1, start_kisses2, etc.? --Or can the same original function be reused?
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Sep 16, 2009
How do I make text selectable (so I can copy) in a DataGridColumn?
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Apr 15, 2012
How can I validate the cells in a DataGridColumn individually? (ActionScript 3.5) The validation is configured per-cell, based on fields in the given row. For example
FIELD VALUE TYPE
age 13 Integer
height 13x3 Integer
[code].....
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