List as item in spark datagrid
Hi,
Does anyone know how I make a spark datagrid display a list as an item?
The columns need to be dynamicly made as wel as the content of the cells.
How do I do this? Anyone?
use itemrenderer to display the listbox or combobox
Similar Messages
-
Spark datagrid item editor font see through
I am using a default item editor on a spark datagrid.
When the user attempts to edit the field the old value shows through.
How do I get rid of this?
I am using out of the box stuff? Is this a listed bug?
Code is...
<s:GridColumn dataField="Actual" headerText="Actual" width="75" editable="true">
<s:itemRenderer>
<fx:Component>
<s:DefaultGridItemRenderer textAlign="right" background="true" backgroundColor="#FFFFFF" alpha="1.0" color="#000000" />
</fx:Component>
</s:itemRenderer>
</s:GridColumn>
Thanks
Dan PrideTry <s:DefaultGridItemEditor if you are wanting to make it editable.
here is an example of combobox, but it is similiar ....
<s:itemEditor>
<fx:Component>
<s:ComboBoxGridItemEditor >
<s:dataProvider>
<s:ArrayList>
<fx:String>Edit</fx:String>
<fx:String>Read</fx:String>
</s:ArrayList>
</s:dataProvider>
</s:ComboBoxGridItemEditor>
</fx:Component>
</s:itemEditor>
Don -
Overriding Spark DataGrid item renderer's prepare method - renderer's child is initially null
I am currently using the 4.12.0 SDK. I have a Spark DataGrid setup that makes use of an externally-defined itemRenderer:
<s:DataGrid id="dgEquipment"
width="100%" height="100%"
doubleClickEnabled="true"
creationComplete="init()" doubleClick="popTab(event)">
<s:columns>
<s:ArrayList>
<s:GridColumn itemRenderer="renderers.equipment.IconRenderer"
dataField="EXISTING"
width="22"/>
The data provider is set programmatically after a remote call has returned a result.
I have the renderer setup as follows:
<?xml version="1.0" encoding="utf-8"?>
<s:GridItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
dataChange="init()" remove="dispose()">
<s:layout>
<s:VerticalLayout horizontalAlign="center" verticalAlign="middle"/>
</s:layout>
<fx:Script>
<![CDATA[
import mx.controls.Menu;
import mx.events.MenuEvent;
import spark.components.DataGrid;
[Bindable]
[Embed(source="../../../assets/images/Icon 1.png")]
private var ico1:Class;
[Bindable]
[Embed(source="../../../assets/images/Icon 2.png")]
private var ico2:Class;
[Bindable]
[Embed(source="../../../assets/images/Icon 3.png")]
private var ico3:Class;
private var isExisting:Boolean;
private var popUp:Menu;
private function init():void
if (data)
isExisting = data.EXISTING == 1;
private function dispose():void
if (popUp)
popUp.removeEventListener(MenuEvent.ITEM_CLICK, popUp_click);
popUp = null;
if (imgActions)
imgActions.removeEventListener(MouseEvent.CLICK, image_click);
imgActions = null;
override public function prepare(hasBeenRecycled:Boolean):void
if (data)
if ((data.TYPE == "A" || data.TYPE == "B") && !data.X && !data.Y)
disableLink();
imgActions.source = ico3;
imgActions.toolTip = "Blah blah.";
else if (data.TYPE == "C" || data.TYPE == "D")
disableLink();
else if (isExisting)
imgActions.source = ico1; //****************************** imgActions.toolTip = "More blah blah.";
imgActions.addEventListener(MouseEvent.CLICK, image_click);
else
imgActions.source = ico2;
imgActions.addEventListener(MouseEvent.CLICK, image_click);
imgActions.toolTip = "Even more blah blah.";
initPopUp();
private function initPopUp():void
private function popUp_click(event:MenuEvent):void
private function image_click(event:MouseEvent):void
private function disableLink():void
]]>
</fx:Script>
<s:Image id="imgActions"
height="18" width="18"/>
</s:GridItemRenderer>
When the code reaches the line where I have added a comment full of asterisks, I get the following error:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at renderers.equipment::IconRenderer/prepare()[C:\…\renderers\equipment\IconRenderer.mxml:81 ]
at spark.components.gridClasses::GridViewLayout/initializeItemRenderer()[/Users/justinmclean /Documents/ApacheFlex4.12.0/frameworks/projects/spark/src/spark/components/gridClasses/Gri dViewLayout.as:1808]
at spark.components.gridClasses::GridViewLayout/createTypicalItemRenderer()[/Users/justinmcl ean/Documents/ApacheFlex4.12.0/frameworks/projects/spark/src/spark/components/gridClasses/ GridViewLayout.as:1243]
at spark.components.gridClasses::GridViewLayout/updateTypicalCellSizes()[/Users/justinmclean /Documents/ApacheFlex4.12.0/frameworks/projects/spark/src/spark/components/gridClasses/Gri dViewLayout.as:1374]
at spark.components.gridClasses::GridViewLayout/measure()[/Users/justinmclean/Documents/Apac heFlex4.12.0/frameworks/projects/spark/src/spark/components/gridClasses/GridViewLayout.as: 875]
at spark.components.supportClasses::GroupBase/measure()[/Users/justinmclean/Documents/Apache Flex4.12.0/frameworks/projects/spark/src/spark/components/supportClasses/GroupBase.as:1156 ]
at mx.core::UIComponent/http://www.adobe.com/2006/flex/mx/internal::measureSizes()[/Users/justinmclean/Documents/ApacheFlex4.12.0/frameworks/projects/framework/src/mx/cor e/UIComponent.as:9038]
at mx.core::UIComponent/validateSize()[/Users/justinmclean/Documents/ApacheFlex4.12.0/framew orks/projects/framework/src/mx/core/UIComponent.as:8962]
at spark.components::Group/validateSize()[/Users/justinmclean/Documents/ApacheFlex4.12.0/fra meworks/projects/spark/src/spark/components/Group.as:1074]
at mx.managers::LayoutManager/validateSize()[/Users/justinmclean/Documents/ApacheFlex4.12.0/ frameworks/projects/framework/src/mx/managers/LayoutManager.as:673]
at mx.managers::LayoutManager/doPhasedInstantiation()[/Users/justinmclean/Documents/ApacheFl ex4.12.0/frameworks/projects/framework/src/mx/managers/LayoutManager.as:824]
at mx.managers::LayoutManager/doPhasedInstantiationCallback()[/Users/justinmclean/Documents/ ApacheFlex4.12.0/frameworks/projects/framework/src/mx/managers/LayoutManager.as:1188]
Running the debugger shows that this occurs with the first item in the data provider. If I alter the prepare method to check for the existence of imgActions before doing anything, everything works fine after the first item. So I'll have one row in the DataGrid with a missing icon, and all the rest will have icons.
So the question is, is it normal for prepare to run before any children of the item renderer are created? If so, how should I handle this?
Many thanks in advance.A little more info. I added some event handlers to the renderer and the image (for events that I thought would be relevant), and here is the order of events based on trace statements within the handlers:
griditemrenderer1_addedHandler
griditemrenderer1_addedToStageHandler
griditemrenderer1_preinitializeHandler
imgActions_addedHandler
griditemrenderer1_addedHandler
imgActions_addedToStageHandler
imgActions_preinitializeHandler
imgActions_addedHandler
griditemrenderer1_addedHandler
imgActions_initializeHandler
griditemrenderer1_elementAddHandler
imgActions_addHandler
griditemrenderer1_initializeHandler
griditemrenderer1_addHandler
prepare called
imgActions_resizeHandler
griditemrenderer1_resizeHandler
imgActions_creationCompleteHandler
imgActions_updateCompleteHandler
griditemrenderer1_creationCompleteHandler
griditemrenderer1_updateCompleteHandler
griditemrenderer1_removeHandler
griditemrenderer1_addedHandler
griditemrenderer1_addedToStageHandler
imgActions_addedToStageHandler
griditemrenderer1_addHandler
griditemrenderer1_dataChangeHandlerTypeError: Error #1009: Cannot access a property or method of a null object reference.
prepare called
at renderers.equipment::IconRenderer/prepare()[C:\…\renderers\equipment\IconRenderer.mxml:91 ]
imgActions_renderHandler
griditemrenderer1_renderHandler -
Spark datagrid item renderer - adjust height
I am using a textinput as an item renderer for DataGrid:
<s:GridColumn dataField="Comment" headerText="Comment"
itemRenderer="DataGridRenderer">
</s:GridColumn>
// Renderer
<?xml version="1.0" encoding="utf-8"?>
<s:GridItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
xmlns:gridEditorClasses="spark.components.gridEditorClasses.*"
xmlns:ns="library://commons.stoneriver.com"
>
<fx:Script>
<![CDATA[
override public function prepare(hasBeenRecycled:Boolean):void
super.prepare(hasBeenRecycled);
if (data)
if(data.FormCode == "")
Comment.text = data[column.dataField];
Comment.setStyle("backgroundColor", 0xFFFFFF);
else
Comment.text = "";
Comment.setStyle("backgroundColor", 0xB1CCF0);
]]>
</fx:Script>
<!--- The renderer's visual component. -->
<s:TextInput id="Comment" width="100%" borderVisible="false" fontSize="{column.grid.dataGrid.getStyle('fontSize')}"/>
</s:GridItemRenderer>
How can I adjust a height of this renderer to fill the whole cell? Right now it comes out with a smaller height than a row height.
ThanksI actually got word wrapping working with RichEditableText . But now when I specify height=100% all rows have the same extremely large height.
-
Spark DataGrid Embedded Font Quandary
01. In everything that follows, I am talking about the latest [21328] version of the SDK, not that I believe that my problems have anything to do with that release, just so anyone interested and willing to help will know the version.
02. My application happens to be rooted in AIR's WindowedApplication, but again, I do not think that has any impact on my problems; I believe the same results would obtain for a Flex Application.
03. I have a custom renderer for the Spark DataGrid which extends DefaultGridItemRenderer. It works fine. Its primary job is to change the font characteristics of each row in the list as a visual clue to the user as to the specific nature of the content that is accessible. Some entries are just in the Regular font, some in Bold, some in Italic, and some in Bold-Italic.
04. I have, for most of the project, embedded the necessary fonts like this:
[Embed (source="C:/Windows/Fonts/ArnoPro-Caption.otf", fontName="ArnoPro_BI_4",
fontStyle="italic",
fontWeight="bold",
mimeType="application/x-font",
embedAsCFF="true",
unicodeRange="U+0021-U+00ff, U+20ac-U+20ac")]
private const ArnoPro_BI_4:Class;
As I said, that all works just as advertized. But, that method of embedding carries the somewhat painful burden of slower compilations, so for the last 24 hours I have unseccessfully been trying to replace that with:
[Embed (source = "../resources/assets/ArnoPro_BI_4.swf", symbol="ArnoPro_BI_4")]
private const ArnoPro_BI_4:Class;
where the swf file was produced via fontswf, using this incantation:
fontswf -4 -u U+0021-U+00ff,U+20ac-U+20ac -b -i -a ArnoPro_BI_4 -o ArnoPro_BI_4.swf C:/Windows/Fonts/ArnoPro-Caption.otf
06. By all that is holy, the two different means of embedding the font ought to yield the same result, but they do not. I have debugging code inserted to print out the list of fonts upon initiation of the application, and they are identical. Both means of embedding do succeed in getting the embedded fonts into the .swf, but the attempt to use the fonts fails using the second approach.
There is, of course, no change being made to the code in the item renderer which merely uses setStyle() to effect the row-by-row result. The result in the second case is that the only style of the embedded font that renders is 'regular'.
07. I have used the 'keep-generated' facility to look at the code being generated by the mxmlc compiler and can see that different code is emitted, but it does not help me find a fix to the problem. Both forms of the meta-tag do something; both methods of embedding seem to correctly register themselves with the FontManager, but only the method of embedding which actually performs the transcoding during compilation seems to result in a set of registered fronts which can be found and correctly used to render output based on the runtime setting of the font style.Thank for the reply
I hoped that my posting indicated how the fonts in the the .swf file were constructed. The "-4", argument to the command-line tool, fontswf, as far as I can tell, is the precise analog to the "embedAsCFF" argument in the [Embed] syntax. That is what makes it so perplexing. Given all the external documentation that is available for each tool/methodology, I would have thought that the resultant bytecodes, classes, flags, whatever, would have been identical. The only difference would be the timing of when the transcoding took place.
Since it is clearly more efficient to only transcode whatever set of fonts an application needs once, not once per build/test turn-around, I would really like to make the fontswf workflow work. For those of us outside the beneficial environment of your licensed tools, the kindly-provided alternative to the facilities built into Flash Professional and/or Flash Builder give us the greatest degree of productivity.
Whoever has access to the source code for Font [I can only see the uninteresting FontAsset in the SDK] can probably determine what difference might result from mxmlc working with this intermediate output, when inline transcoding is 'tagged':
package
import mx.core.FontAsset;
[ExcludeClass]
[Embed(fontName="ArnoPro_IT_4", _resolvedSource="C:/WINDOWS/Fonts/ArnoPro-ItalicCaption.otf", fontStyle="italic", _line="1189", _pathsep="true", embedAsCFF="true", fontWeight="normal", unicodeRange="U+0021-U+00ff, U+20ac-U+20ac", source="C:/Windows/Fonts/ArnoPro-ItalicCaption.otf", _column="2", exportSymbol="AIRZoom_ArnoPro_IT_4", _file="G:/FP/AIRZoom/src/AIRZoom_AS.as", mimeType="application/x-font")]
public class AIRZoom_ArnoPro_IT_4 extends mx.core.FontAsset
public function AIRZoom_ArnoPro_IT_4()
super();
versus this, when swf extraction is 'tagged':
package
import mx.core.FontAsset;
[ExcludeClass]
[Embed(fontName="ArnoPro_IT_4", _resolvedSource="C:/WINDOWS/Fonts/ArnoPro-ItalicCaption.otf", fontStyle="italic", _line="1191", _pathsep="true", embedAsCFF="true", fontWeight="normal", unicodeRange="U+0021-U+00ff, U+20ac-U+20ac", source="C:/Windows/Fonts/ArnoPro-ItalicCaption.otf", _column="2", exportSymbol="AIRZoom_ArnoPro_IT_4", _file="G:/FP/AIRZoom/src/AIRZoom_AS.as", mimeType="application/x-font")]
public class AIRZoom_ArnoPro_IT_4 extends mx.core.FontAsset
public function AIRZoom_ArnoPro_IT_4()
super();
The only difference is that value for '_line' which probably only indicates that one of the two processes has a comment or empty line somewhere. -
A 2-sided track's Thumb, with a list of items in center, forces the tumb to jump on selected item
With Adobe Catalyst, you can create nifty VerticalScrollBars for DataLists. I've create a thumb of the verticalscroll bar as two images (left & right of track). When I click on an item in the list, the thumb listens to the mouse on the track and tries to scroll to that area, instead on selecting the ticket.
Check the image for a clearer explanation:
In the Code of the Skin of List:
<s:VScrollBar fixedThumbSize="true" skinClass="components.VerticalScrollbar1" x="0" y="0" viewport="{dataGroup}"/>
And the Skin VerticalScrollBar1:
<?xml version="1.0" encoding="utf-8"?>
<s:Skin xmlns:s="library://ns.adobe.com/flex/spark" xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:d="http://ns.adobe.com/fxg/2008/dt">
<fx:Metadata>[HostComponent("spark.components.VScrollBar")]</fx:Metadata>
<s:states>
<s:State name="normal"/>
<s:State name="disabled"/>
<s:State name="inactive"/>
</s:states>
<s:Button skinClass="components.Track1" x="7" y="0" id="track"/>
<s:Button skinClass="components.Thumb1" x="0" y="104" id="thumb"/></s:Skin>
and the Thumb1:
<?xml version="1.0" encoding="utf-8"?>
<s:Skin xmlns:s="library://ns.adobe.com/flex/spark" xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:d="http://ns.adobe.com/fxg/2008/dt" xmlns:graphics="assets.graphics.*">
<fx:Metadata>[HostComponent("spark.components.Button")]</fx:Metadata>
<s:states>
<s:State name="up"/>
<s:State name="over"/>
<s:State name="down"/>
<s:State name="disabled"/>
</s:states>
<graphics:Graphic2 x="0" y="0" d:userLabel="ThumbLeft"/>
<graphics:Graphic1 x="146" y="0" d:userLabel="ThumbRight"/>
</s:Skin>
Notice that there are two thumbs, and an empty area in the middle, in the hope that it would ignore the mouse of that area where the items are located.Here's a sample script that first defines a list of items in an array and uses it to update a number of dropdowns, name dd1...dd10:
// Populate an array with the list items
var aItems = ["-- Select a state --", "Alaska", "Hawaii", "Washington", "Oregon", "Idaho", "Montana", "Wyoming", "Nevada", "Colorado", "Arizona", "New Mexico"];
// Loop through the dropdowns...
for (var i = 1; i < 11; i += 1) {
// ...and set the list items
getField("dd" + i).setItems(aItems);
That's all there is to it. This can be run from the Mouse Up event of a temporary button that you create, the interactive JavaScript console (Ctrl+J), etc.
More info on setItems: http://livedocs.adobe.com/acrobat_sdk/9.1/Acrobat9_1_HTMLHelp/JS_API_AcroJS.88.752.html -
Flex Spark DataGrid BUG skipping rows on refresh
I have a small one file example that demonstrates this Flex DataGrid bug.
I tried to report it to Flex bugs and the page timed out.
I am filling a column in a spark datagrid with checkboxes to select that row.
In the header of that column is a checkbox to select ALL the rows.
However, the middle row is not getting refreshed so the display is wrong.
The checkbox looks empty when the backing value is correct.
I have added a print to the code that sets the values in the data and it is setting everyone.
But when I print the isSelected code it is NOT being called on ONE (the middle) visible row.
If I move away or scroll up and down the check box shows the check mark.
So My only conclusion is that refresh has a bug.
Here is the example that demonstrates the problem.
Simply select the header checkbox and the 3rd checkbox does not get updated on refresh.
<?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">
<fx:Script>
<![CDATA[
import mx.collections.ArrayCollection;
private static var values:Array = [
{selected: false, position: 1},
{selected: false, position: 2},
{selected: false, position: 3},
{selected: false, position: 4},
{selected: false, position: 5}
[Bindable]
public static var datalist:ArrayCollection = new ArrayCollection( values );
public static function updateDataList( value:Boolean ):void
for each( var item:Object in datalist ) {
trace( "updated: " + item.position );
item.selected = value;
datalist.refresh();
]]>
</fx:Script>
<s:DataGrid dataProvider="{datalist}">
<s:columns>
<s:ArrayList>
<s:GridColumn dataField="position" width="200"/>
<s:GridColumn width="34" >
<s:itemRenderer>
<fx:Component>
<s:GridItemRenderer textAlign="center">
<fx:Script>
<![CDATA[
private function changeSelection( data:Object, event:MouseEvent ):void
data.selected = ! data.selected;
private function isSelected( data:Object ):Boolean
trace( "isSelected: " + data.position );
return data.selected;
]]>
</fx:Script>
<s:layout>
<s:HorizontalLayout horizontalAlign="center" verticalAlign="middle"/>
</s:layout>
<s:CheckBox id="selbox" label="" selected="{isSelected(data)}"
click="changeSelection(data, event)"/>
</s:GridItemRenderer>
</fx:Component>
</s:itemRenderer>
<s:headerRenderer>
<fx:Component>
<s:GridItemRenderer height="30">
<fx:Script>
<![CDATA[
[Bindable]
private static var selectAll:Boolean = false;
private function changeAllSelection( event:MouseEvent ):void
selectAll = ! selectAll;
Main.updateDataList( selectAll );
]]>
</fx:Script>
<s:layout>
<s:VerticalLayout horizontalAlign="center" verticalAlign="middle"/>
</s:layout>
<s:CheckBox label="" selected="{selectAll}"
click="changeAllSelection(event)"/ >
</s:GridItemRenderer>
</fx:Component>
</s:headerRenderer>
</s:GridColumn>
</s:ArrayList>
</s:columns>
</s:DataGrid>
</s:Application>
Here is an image of the failed result... after selecting the top checkbox.
Below is an image of the output produced by the two traces.
Notice that the refresh has not called isSelected on the 3rd element.I have a small one file example that demonstrates this Flex DataGrid bug.
I tried to report it to Flex bugs and the page timed out.
I am filling a column in a spark datagrid with checkboxes to select that row.
In the header of that column is a checkbox to select ALL the rows.
However, the middle row is not getting refreshed so the display is wrong.
The checkbox looks empty when the backing value is correct.
I have added a print to the code that sets the values in the data and it is setting everyone.
But when I print the isSelected code it is NOT being called on ONE (the middle) visible row.
If I move away or scroll up and down the check box shows the check mark.
So My only conclusion is that refresh has a bug.
Here is the example that demonstrates the problem.
Simply select the header checkbox and the 3rd checkbox does not get updated on refresh.
<?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">
<fx:Script>
<![CDATA[
import mx.collections.ArrayCollection;
private static var values:Array = [
{selected: false, position: 1},
{selected: false, position: 2},
{selected: false, position: 3},
{selected: false, position: 4},
{selected: false, position: 5}
[Bindable]
public static var datalist:ArrayCollection = new ArrayCollection( values );
public static function updateDataList( value:Boolean ):void
for each( var item:Object in datalist ) {
trace( "updated: " + item.position );
item.selected = value;
datalist.refresh();
]]>
</fx:Script>
<s:DataGrid dataProvider="{datalist}">
<s:columns>
<s:ArrayList>
<s:GridColumn dataField="position" width="200"/>
<s:GridColumn width="34" >
<s:itemRenderer>
<fx:Component>
<s:GridItemRenderer textAlign="center">
<fx:Script>
<![CDATA[
private function changeSelection( data:Object, event:MouseEvent ):void
data.selected = ! data.selected;
private function isSelected( data:Object ):Boolean
trace( "isSelected: " + data.position );
return data.selected;
]]>
</fx:Script>
<s:layout>
<s:HorizontalLayout horizontalAlign="center" verticalAlign="middle"/>
</s:layout>
<s:CheckBox id="selbox" label="" selected="{isSelected(data)}"
click="changeSelection(data, event)"/>
</s:GridItemRenderer>
</fx:Component>
</s:itemRenderer>
<s:headerRenderer>
<fx:Component>
<s:GridItemRenderer height="30">
<fx:Script>
<![CDATA[
[Bindable]
private static var selectAll:Boolean = false;
private function changeAllSelection( event:MouseEvent ):void
selectAll = ! selectAll;
Main.updateDataList( selectAll );
]]>
</fx:Script>
<s:layout>
<s:VerticalLayout horizontalAlign="center" verticalAlign="middle"/>
</s:layout>
<s:CheckBox label="" selected="{selectAll}"
click="changeAllSelection(event)"/ >
</s:GridItemRenderer>
</fx:Component>
</s:headerRenderer>
</s:GridColumn>
</s:ArrayList>
</s:columns>
</s:DataGrid>
</s:Application>
Here is an image of the failed result... after selecting the top checkbox.
Below is an image of the output produced by the two traces.
Notice that the refresh has not called isSelected on the 3rd element. -
Spark DataGrid with Dynamic Column Width
Lets suppose I have a Spark Datagrid with no explicit typicalItem. When the Datagrid is initialized, the column widths are calcualted correctly based on the contents of the dataprovider. However if I add/remove an item from the dataprovider, or modify the one of the objects in the dataprovider, the column widths never update to reflect the change. Is the the correct behavior for a DataGrid? If so, is there any method I can call to force the DataGrid to recalculate and redraw the column widths?
When Spark DataGrid doesn't have a typicalItem, it uses the first dataProvider item as the typicalItem. If you change that, the DataGrid won't pick it up immediately. You can invalidate the current typicalItem using dataGrid.invalidateTypicalItem().
-
Setting font style on hover for spark datagrid
I'm trying to skin a Spark datagrid. I have most things sorted by creating a custom skin, but one thing I can't find is how to set the colour of the row's font on hover. I can set the background colour fine, but how would I go about changing the font colour when a user hovers over the row?
ThanksHi
You don’t actually deal with the text that’s displayed in the a datagrid inside of the skin
Look at item renderers for the grid columns. You can style your text or whatever else you would like to display in the grid, in the renderer
Hope that helps a little
If you are still stuck just let me know and I’ll send you some code
Cheers
g
heres some code
NOTE: I am making this up as I sit here so I may be forgetting something. Don’t be surprised if this doesn’t work, but the basic idea is right I think
So in the spark datagrid when you set your column (if you use mxml) this will replace a glob renderer so you can have a different one for each column if you wish.
<s:GridColumn dataField="Status"
headerText="name"
width="37"
itemRenderer="fooRenderer"
/>
Or set a gloabel renderer in the grid def itself
<s:DataGrid itemRenderer=”fooRenderer” />
Then write a custom renderer: fooRenderer.mxml
<?xml version="1.0" encoding="utf-8"?>
<s:GridItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
clipAndEnableScrolling="true"
>
<fx:Script>
<![CDATA[
override public function discard(willBeRecycled:Boolean):void
labelData.text="";
super.discard(willBeRecycled);
override public function prepare(hasBeenRecycled:Boolean):void
if(data)
// set the colour of the text label to black
labelData.setStyle("color",0x000000)
// put some logic here to dynamic style the label
//check for the 'format' function on the column (THIS MAY BE WRONG)
if( column.labelFunction != null )
labelData.text = column.labelFunction( data, column );
else
labelData.text = data[column.dataField];
super.prepare(hasBeenRecycled);
]]>
</fx:Script>
<s:Label id="labelData" />
</s:GridItemRenderer -
Selection issue with editable Spark DataGrid
Hi everyone,
I am evaluating the new Spark DataGrid and I'm having a very strange issue with the behavior of selection in an editable instance.
Here is my test application: http://www.playcalliope.com/flex/DataGridSelectionIssue.html (code here: https://gist.github.com/1129160)
And here are the steps to reproduce the issue:
select the very first cell at the top-left corner of the grid (the one with "Gabriele");
click on it once more, the editor appears;
now click on the cell just to the right of it (the one with "Genta").
You should see that editing ends as it supposed to do, but selection is placed on the third cell (the one with a 5 in it) instead on the one you clicked on. Playing a little with the grid you should see that this isn't the only case, but selection is really behaving randomly.
I am using SDK 4.5.1.21328.
I think this is a very basic usage case.. I can't believe this is not working properly, what am I missing?
Thanks a lot,
Gabriele Genta
Message was edited to add live exampleYour running into a known bug, https://bugs.adobe.com/jira/browse/SDK-30088.
The bug will be fixed in the Mega release. To work around the bug you can create a custom editor and remove the "dataGrid.validateNow();" call in DataGridEditor.save().
Here's how I modified your example to workaround the bug:
<?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"
backgroundColor="#E7E7E7"
creationComplete="application1_creationCompleteHandler(event)">
<s:layout>
<s:HorizontalLayout horizontalAlign="center" verticalAlign="middle"/>
</s:layout>
<fx:Script>
<![CDATA[
import mx.collections.XMLListCollection;
import mx.events.FlexEvent;
protected function application1_creationCompleteHandler(event:FlexEvent):void
testGrid.dataProvider = new XMLListCollection(testData.item);
]]>
</fx:Script>
<fx:Declarations>
<fx:XML id="testData" xmlns="">
<items>
<item>
<id>1</id>
<cognome>Gabriele</cognome>
<nome>Genta</nome>
<uhm>5</uhm>
<bene>molto</bene>
</item>
<item>
<id>10</id>
<cognome>Pinco</cognome>
<nome>Pallino</nome>
<uhm>10</uhm>
<bene>poco</bene>
</item>
</items>
</fx:XML>
<fx:Component className="MyDefaultEditor">
<s:DefaultGridItemEditor>
<fx:Script>
<![CDATA[
import mx.collections.ICollectionView;
import mx.collections.ISort;
override public function save():Boolean
if (!validate())
return false;
var newData:Object = value;
var property:String = column.dataField;
var data:Object = data;
var typeInfo:String = "";
for each(var variable:XML in describeType(data).variable)
if (property == [email protected]())
typeInfo = [email protected]();
break;
if (typeInfo == "String")
if (!(newData is String))
newData = newData.toString();
else if (typeInfo == "uint")
if (!(newData is uint))
newData = uint(newData);
else if (typeInfo == "int")
if (!(newData is int))
newData = int(newData);
else if (typeInfo == "Number")
if (!(newData is Number))
newData = Number(newData);
else if (typeInfo == "Boolean")
if (!(newData is Boolean))
var strNewData:String = newData.toString();
if (strNewData)
newData = (strNewData.toLowerCase() == "true") ? true : false;
if (property && data[property] !== newData)
// If the data is sorted, turn off the sort for the edited data.
var sort:ISort = null;
if (dataGrid.dataProvider is ICollectionView)
var dataProvider:ICollectionView = ICollectionView(dataGrid.dataProvider);
if (dataProvider.sort)
sort = dataProvider.sort;
dataProvider.sort = null;
var oldData:Object = data[property];
data[property] = newData;
dataGrid.dataProvider.itemUpdated(data, property, oldData, newData);
// Restore the sort. The data will not be sorted due to this change.
if (sort)
ICollectionView(dataGrid.dataProvider).sort = sort;
return true;
]]>
</fx:Script>
</s:DefaultGridItemEditor>
</fx:Component>
</fx:Declarations>
<s:DataGrid id="testGrid" width="100%" height="100%"
editable="true" selectionMode="singleCell"
itemEditor="{new ClassFactory(MyDefaultEditor)}">
<s:columns>
<s:ArrayList>
<s:GridColumn headerText="Prova" dataField="cognome"/>
<s:GridColumn headerText="Prova1" dataField="nome"/>
<s:GridColumn headerText="Prova3" dataField="uhm"/>
<s:GridColumn headerText="Prova4" dataField="bene"/>
</s:ArrayList>
</s:columns>
</s:DataGrid>
</s:Application> -
I'm working with the new Spark DataGrid, and I understand it's still a work in progress. I've also created a bug in the Adobe bug system. However, I want to be sure that I'm not overlooking something.
Here is an example that illustrates the issue. If I create an itemRenderer for a column in a dDtaGrid, it takes 2 clicks to trigger the click event and 3 clicks to trigger the doubleClick event, if you click on the column with the itemRenderer. This happens about 95% of the time. Occasionally, it works as expected, but that's a rarity. So the question is, am I doing something wrong in the use of itemRenderers.
<?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">
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
<fx:Script>
<![CDATA[
import mx.controls.Alert;
]]>
</fx:Script>
<s:DataGrid x="33" y="57" requestedRowCount="4" textAlign="center" click="Alert.show('Clicked')">
<s:columns>
<s:ArrayList>
<s:GridColumn dataField="dataField1" headerText="Name" width="75">
<s:itemRenderer>
<fx:Component>
<s:GridItemRenderer>
<s:Label text="{data.dataField1}" left="5" paddingTop="10" paddingBottom="5"/>
</s:GridItemRenderer>
</fx:Component>
</s:itemRenderer>
</s:GridColumn>
<s:GridColumn dataField="dataField2" headerText="Column2" width="75"/>
<s:GridColumn dataField="dataField3" headerText="Column3" width="75"/>
</s:ArrayList>
</s:columns>
<s:ArrayList>
<fx:Object dataField1="John" dataField2="data1" dataField3="data1"></fx:Object>
<fx:Object dataField1="Ryan" dataField2="data2" dataField3="data2"></fx:Object>
<fx:Object dataField1="Kyle" dataField2="data3" dataField3="data3"></fx:Object>
<fx:Object dataField1="Edward" dataField2="data4" dataField3="data4"></fx:Object>
</s:ArrayList>
</s:DataGrid></s:Application>I have approximately the same problem : I want to listen double click (doubleClick or gridDoubleClick) on a spark datagrid.
The double click event is always dispatched when I double-click on a column whose item renderer is a textArea (even with doubleClickEnabled=false).
The double click event is SOMETIMES dispatched when I double-click on a column whose item renderer is an image or a label :
1. When I double-click for the first time on the label renderer : it gives focus to datagrid and select item but does not dispatch doubleClick
2. When I double-click on the textArea colum, then on the Label column of the same row, doubleClick is well dispatched
3. When I double-click on the textArea colum, then on the Label column of a different row, doubleClick is not dispatched
4. when I double-click on the label column after double-clicking on another row in the Label column, doubleClick is well dispatched
I think it's the same behaviour with simple click event.
Do you think spark datagrid is not stable enough and we should use mx datagrid instead ?
Here is the code :
<s:DataGrid dataProvider="{arrayCollection}" doubleClickEnabled="true" doubleClick="trace(event)" gridDoubleClick="trace(event)">
<s:columns>
<s:ArrayList>
<s:GridColumn>
<s:itemRenderer>
<fx:Component>
<s:GridItemRenderer>
<s:Label text="{data.label}"/>
</s:GridItemRenderer>
</fx:Component>
</s:itemRenderer>
</s:GridColumn>
<s:GridColumn>
<s:itemRenderer>
<fx:Component>
<s:GridItemRenderer>
<s:TextArea text="{data.label}"/>
</s:GridItemRenderer>
</fx:Component>
</s:itemRenderer>
</s:GridColumn>
</s:ArrayList>
</s:columns>
</s:DataGrid> -
Spark Datagrid on a mobile application, problem handling scrolling
I have a spark datagrid on a mobile application, I set the
interactionMode="touch"
and the dataGrid scrolling is good, I got some problems adding a selectionChange eventListener to it, because scrolling the dataGrid will automatically change the selection and instead simply scrolling it, the function binded will start...
How can I prevent that?
<s:DataGrid id="lista" top="350" bottom="50" right="0" left="0"
dataProvider="{listaPdv}"
verticalScrollPolicy="auto"
rowHeight="100"
selectionColor="#b64947"
skinClass="skins.dataGridSkin"
itemRenderer="components.dataGridItemRendererText"
fontFamily="Verdana"
fontSize="30"
interactionMode="touch"
horizontalScrollPolicy="auto"
selectionChange="datagrid_select(event)">
Help... It's really annoying and I cannot scroll the datagrid...I solved using a workaround... instead of binding the selectionChange event, I binded the mouseDown and mouseUp then check the time between the two actions and if the time is less then a defined value the selectionChange event is dispatched...
<s:DataGrid id="grigliaData"
sortableColumns="false"
rowHeight="100"
interactionMode="touch"
mouseDown="grigliaData_mouseDownHandler(event)"
mouseUp="grigliaData_mouseUpHandler(event)"
top="230" left="5" right="5" bottom="50"
dataProvider="{listaEventi}" width="100%" height="100%">
//AS Code
private var _lastClickEvent:int;
protected function grigliaData_mouseDownHandler(event:MouseEvent):void
_lastClickEvent = getTimer();
protected function grigliaData_mouseUpHandler(event:MouseEvent):void
if (getTimer() < _lastClickEvent + 200) // 200 = Dalay
// return selectedIndex -
Playing with the spark datagrid
I'm Playing with the spark datagrid and have a column set up like so:
<GridColumn width="140" headerText="Margin" headerText.editMode="Margin (editing)" dataField="margin" editable="false" editable.editMode="true" itemRenderer="gridColumnRenderer" >
</GridColumn>
I would like the item render to change colour based on the state of the outerDocuent, is this possible?
I tried this but can't get to the outerdocument
<?xml version="1.0" encoding="utf-8"?>
<s:ItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
autoDrawBackground="true">
<s:Label text="{data.margin}" backgroundColor="{ outerDocument.currentState =='editMode'?0xffffff:0xdddddd}"/>
</s:ItemRenderer>I believe you will need to use GridItemRenderer instead of ItemRenderer as your base class for renderers in the spark DataGrid. Does it work if you change to that?
-
Spark datagrid that shows the new value and that it previously was
Im trying to create a item renderer for a spark datagrid that shows the new value and that it previously was and I am comparing in the set data, the problem I am having is that in teh set data I am frequently getting data from other rows (I know this because of virtual renderders), it there a way round this?
<?xml version="1.0" encoding="utf-8"?>
<s:GridItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
currentState="unmodified">
<fx:Script>
<![CDATA[
override public function set data(value:Object):void
if(data){
if(super.data.margin != value.margin && super.data.margin){
oldValue.text = '(' + super.data.margin + ')';
}else{
oldValue.text == '';
super.data = value;
stroke.visible = false;
fillRect.visible = false;
if(data){
if(this.data.isModifiedClientSide){
currentState = "modified";
fill.color = 0xddddff;
stroke.visible = true;
fillRect.visible = true;
else{
fill.color = 0xffffff;
stroke.visible = false;
currentState = "unmodified";
fillRect.visible = true;
]]>
</fx:Script>
<s:states>
<s:State name="modified"/>
<s:State name="unmodified"/>
</s:states>
<s:Rect top="0" left="0" right="0" bottom="0" id="fillRect" >
<s:fill><s:SolidColor id="fill" color="0xFFffff" /></s:fill>
</s:Rect>
<s:Rect left="1" top="1" right="0" bottom="0" id="stroke">
<s:stroke >
<s:SolidColorStroke color="0x000099" weight="1" >
</s:SolidColorStroke>
</s:stroke>
</s:Rect>
<s:HGroup horizontalAlign="center" verticalAlign="middle" top="0" left="0" right="0" bottom="0" paddingRight="5">
<s:Label text="{data.margin}" width="50%" textAlign="right">
</s:Label>
<s:Label id="oldValue" color="0xff0000" width="50%" textAlign="right">
</s:Label>
</s:HGroup>
</s:GridItemRenderer>If I recall correctly, you are talking about the default start page. To check if this is correct, type '''about:home''' in the awesome bar. If this is the same as your homepage, it will still be there when you update.
-
Want to implent CheckBox for itemRenderer and headerItemRenderer for spark DataGrid.
I am using mx:DataGrid in my application.
The first column itemRenderer and headerItermRenderer is CheckBox.
Now I want to move it to spark DataGrid. I could imprement itermRenderer easily by creating sub-claassing GridItemRenderer. But I am struck at implementing headerItermRenderer. I tried to implent it using GridItemRenderer sub-class as I did with itemRenderer. It is not working. The set data method is not getting called.
Do anyone have code for implenting checkbox as itemRenderer and headerRendere in spark datagrid (and not mx datagrid)?
Thanks,
Prithvee Zankat.Hi,
Item renderer can be implemented for spark and i think you will have to write custom header renderer. I am providing some useful links,please go through them :
http://help.adobe.com/en_US/flex/using/WS0ab2a460655f2dc3-427f401412c60d04dca-7ff3.html
http://cookbooks.adobe.com/post_3_state_checkbox_for_header_renderer_in_datagrid-18900.htm l
http://blogs.adobe.com/aharui/category/item-renderers
http://boardreader.com/thread/Spark_Datagrid_custom_header_renderer_1zw07Xgoeo.html
Thanks and Regards,
Vibhuti Gosavi | [email protected] | www.infocepts.com
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