Flex :: How To Edit Item In DataProvider With Support For Cancellation
Jul 9, 2009
I have a DataGrid of objects, and I want to modally edit them; pop up a dialog, change the item, and if the user clicks "Ok", save the changes back to the original item, and if they click "Cancel", do nothing. It seems obvious that if I simply pass in a reference to the original object and change it using data bindings to the fields in the edit form, I won't be able to cancel my edits. How can I support that capability?
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Similar Posts:
Sep 5, 2010
What I would like to do is simply add to a dataProvider, but when I do, I get an error. Here's the code I'm trying to run...
dg.dataProvider.addItem(obj.ResultSet.Result[i]);
It's inside a for loop, using i as the integer. It works great doing...dg.dataProvider = obj.ResultSet.Result But that won't work for me, because I need to add to the dataprovider more than once. I'm getting results in batches of 10, and I need to add each batch to the dataProvider when it's received. I also tried to to do...
var dgDP:dataProvider = new dataProvider(); But for some reason Flex doesn't recognize it...
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Jan 2, 2011
I have a Spark List container whose dataProvider is bound to a result set coming back from a RemoteObject call. Pretty standard stuff.
<s:List id="list" dataProvider="{model.stuff}" width="100%" height="100%"
selectedIndex="@{selectedSlider.value}"
itemRenderer="{stuffRenderer}">
</s:List>
The selectedIndex is associated with an HSlider, but that is not the problem. My issue is that I would like to automatically select a certain "preferred" element from the list (only initially...to guide the user).
I tried to do that in a creationComplete event but my data hadn't shown up yet...setting selectedIndex didn't work..
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Jun 16, 2011
I use a spark List with a custom item renderer and an ArrayCollection for dataProvider.
The ItemRenderer looks something like
<mx:TextInput id="txtValue1" text="{data.myFirstValue}"/>
<mx:TextInput id="txtValue2" text="{data.mySecondValue}"/>
However, even though I change the text in txtValue1 or txtValue2, those are not actually changed in the object inside the ArrayCollection.
myFirstValue and mySecondValue are decorated with the [Bindable] tag.
My understanding is that if the text property is set to be bound a certain property, the changes should be automatically applied.
So the HACK (or so I think) that I use is to listen to the focusOut event of each textbox, and access the parent data provider and set the the values manually.
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Feb 27, 2011
I have a problem in my datagrid itemeditor This is my data grid component
<mx:DataGrid id="lessonPlanDataGrid" x="10" y="10" dataProvider="{studentLessonPlanArray}" height="271" width="270" editable="true">
[Code]...
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Mar 12, 2010
I've a custom itemRenderer for my datagrid. To set the actual data I use the following method:
override public function set data(side:Object):void{
...
}
As soon as I use this function the cell doesn't show up any item Editor anymore. Why is that? When I remove this function the itemEditor is working but with the wrong initialization data.
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Feb 4, 2010
I have to implement AEC in Flex video conferencing application. I know that it can not be done directly in Flash. I'm thinking to write a native application or library that will do AEC outside Flex.
As far I know Adobe Connect Pro is using some external library that do AEC. I'd like to follow this direction and do something similiar.
There comes two possibilities in my mind:
1) Independend custom AEC filter.
The custom AEC filter will be run in the background and will be processing all data from microphone and sound card and doing AEC. The echo signal will be the data that is to be played but delayed in a temporary buffer, something like this: aec(input, delayed_input, output).
I don't know if it work, because Flash microphone input doesn't know about my custom input and the same with the speakers. But how it is done in WinXP/Vista that have AEC at the system level?
2) AEC filter interacting with Flex's NativeProcess.
The filter will be run by NativeProcess. Flex app will pass microphone sound, received remote voice to the filter and return voice with echo removed and then Flex will output this to the speakers. Will it be correct?
If the 2) method is OK then I have following questions:
I will start with Speex's AEC so in what format should be the data pased from Flex? If I choose Flex Speex codec for sound compression can I pass it directly to the speex library? Will be the performance OK? Calling NativeProcess library every sound frame buffer can be time consuming I think. Why there is no AEC implementation in AS3 that can be used directly from Flash? As far I know to do AEC you must have echo data and microphone data (in Flash 10 there is direct access to the microphone). There is definetly something that is stopping doing it like this but I don't know what it is yet :) Is there some free AEC implementation or a DSP library with in except Speex's that I can use?
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Feb 19, 2010
I want to remove an item from my dataprovider where the label in dataprovide is "zee4"[code]But this does not work. I cannot use removeItemAt because I don't know the index number. I need to remove as per the alias itself. The alias is a unique field.
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Oct 29, 2010
is there any control that lists items (like s:list control) and also allows to edit the item ( like mx:ComboBox )?
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Sep 27, 2010
I'm confused as to how Flash CS5 treats symbol instances across different frames in a given layer; If I add an object to a layer, and then add a keyframe to the existing frame set, are there now two instances of the object, one for each frame? When I change the color of the instance in the first key frame, the second keyframes instance stays the same. Is there anyway to edit across all frames? Paste across all frames?
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Nov 12, 2009
Acoustic Echo Cancellation (AEC) with Flash AS3? What do I need? Open Source Libs/wrappers. Tutorials and blog articles on How to do it.
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Feb 15, 2011
I have this datagrid:
<mx:DataGrid id="dgCompetenteN" includeIn="Test" left="10" right="472" top="69" bottom="149"
dataProvider="{colCompetente}" editable="false">
<mx:columns>
[Code]....
What I want to do is, when I select an item in the datagrid, the selected item of the dropdown should be the correct one (the one which has the field idCompSuperioara equal to the third element in the selected datagrid row).
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Jun 10, 2011
I'm creating a mobile app in which I need to show a calendar with months at the top. The months are part of a component that extends from SkinnableDataContainer (and has some custom scrolling/behaviour - which is why I did'nt use a spark list). I need the months to be shown as a 'trapezium' shaped tab and so I'm using a png image as a mask in the item renderer for the component.
When the mask is not applied, it all works well - the months render, the list/data container selection works when I click on a month and so on.When the mask is applied, it renders well, scrolling and everything else seems to work well - but when I click on a month, nothing happens visually. And from the trace statements in my code, it appears list item selection is not changing. Looks like mouse clicks are not working.
Code:
public class TopCalendarMonthRenderer extends LabelItemRenderer {
[Embed(source="/assets/trapezium_alpha.png")]
private static var TrapeziumMask:Class;
private static var trapeziumMaskInstance:BitmapAsset;
[code]...
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Mar 4, 2011
<mx:itemRenderer>
<mx:Component>
<mx:Canvas>
[code]......
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Apr 26, 2011
I have used states in my application.The thing is I have made the first item in my list to be selected. so I gave like this,
if(itemIndex == 0)
this.currentState="selected";
this works fine.The problem is when other item is selected the first item does not change its state,it remains in the selected state until its clicked.My code looks like this,
<s:BorderContainer id="outerCont" width="275" height="100" borderVisible="false"
backgroundColor.normal="#3D3C3C" backgroundAlpha.selected="0.1"
backgroundColor.selected="{data.color}">
My states are like this,
<s:states>
<s:State name="normal" />
<s:State name="hovered" />[code]........
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Nov 4, 2011
Is it possible to trigger Flex Piechart Item click event when a Datagrid Item is clicked.If so can anyone give some example.
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Sep 20, 2011
My code:
mic = Microphone.getEnhancedMicrophone();
var options:MicrophoneEnhancedOptions = new MicrophoneEnhancedOptions();
options.mode = MicrophoneEnhancedMode.FULL_DUPLEX;
options.autoGain = false;
options.echoPath = 256;
[Code]...
In my application I am indeed using the enhanced mic, but echo cancellation still persists.
I think this is a bug Adobe needs to fix, am I the only one having this issue?
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Nov 12, 2011
I am using an component, and currently have a dataProvider working that is anArrayCollection (have a separate question about how to make this an XML file... but I digress).Variable declaration looks like this:
[Bindable]
private var _dpImageList : ArrayCollection = new ArrayCollection([
{"location" : "path/to/image1.jpg"},
[code]....
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Nov 18, 2010
i don't understand flash plugin only support .swf file,not support .flv file? always require load a swf file for play flv file, for exampes:
<embed type="video/x-flv" src="http://www.my.com/test.flv"></embed>
must be use a swf for play
<embed type="application/x-shockwave-flash" src="http://www.my.com/player.swf" flashvars=""></embed>
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Sep 8, 2009
The flex DataGrid colums are arranged alphabetically by default. I need to order the DataGrid colums as per the order in its dataProvider. The dataprovider is the result of the HTTPService . And the number of columns is not known to us . The number of columns depends on the HTTPService result.
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Nov 25, 2010
I have a datagrid with dataProvider property set in MXML as:
dataProvider="{pagedResult.lastResult}"
How do I set the dataprovider in actionscript? I have:
protected function getResult (event:FlexEvent):void {
pagedResult.token = mydata.paged();
adg1.dataProvider = pagedResult.lastResult;
}
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Feb 7, 2011
i m new in flex and was trying example but getting nothing
[Code]...
i think i m doing something wrong in dataprovider tag reason is when i use dataProvider = "{d}"
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Feb 14, 2011
When setting an arrayCollection as a dataProvider to a comboBox programmatically,if the arrayCollection has just one element,i need to do a small validation[code]..
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Mar 13, 2011
I want to display XML exported from Oracle Database as a chart......
The xml has the following structure :
<ROWSET>
<ROW>
<ORDER_ITEMS_ID>1</ORDER_ITEMS_ID>
[Code]....
I've seen many chart examples using ArrayCollection as DataProvider . using the same way , i tried to set xml . But no results.
how to set an XML as dataprovider ? ( or XMLList or XMLlistcollection )( i'm developing a small app in AIR )
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Sep 30, 2010
I am creating the standard "Click to add row" control but I really don't want to dirty the dataProvider with a "placeholder" since it is bound to the model and could end up in the database. Is there a way to add a row that isn't represented in the dataProvider? I started down the road of adding an item directly to listItems but then that needed an item in rowInfo and then that need a reference in rowMap.
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Apr 5, 2012
I am using a combobox to list the contents of a folder. With a button click I use that combobox.selectedItem to delete that folder. After I delete the data is still in the combobox. How do I go about refreshing that combobox?
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Sep 18, 2009
public function fileBrowse():void {
var success:Boolean = fileRef.browse();
}
[code].....
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Nov 2, 2009
I am trying to get the drop down list of combobox by using a php file. That php file returns an xml string which has been used as data provider for combobox.I followed this thread too but in vain.DetailsI have set the creationComplete attribute of mx:Application to init(). In the init() function i have sent the following HTTPService
<mx:HTTPService id="interfaces" url="interfaces.php" resultFormat="e4x" method="POST">
</mx:HTTPService>
Combo Box:
[code].....
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Feb 11, 2010
I'm trying to set a combobox's dataprovider.I have 2 comboboxes: cb_div and cb_stores.For cb_div, I get to set the data provider correctly with an XML file.Cb_stores' dataprovider is to be set depending on the selected item of cb_div.First, here are my XML files.Data provider for cb_div:
<?xml version="1.0" encoding="UTF-8"?>
<divisions>
<division id="Japan">Japan</division>
[code].....
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Mar 4, 2010
I'm using a HorizontalList control with an XML file as a data provider. This is how the XML looks:
[Code]...
I tried using an array of objects as a dataprovider. The item renderer works and the horizontallist behaves as I expect it to. However, when I use an xml file, it's empty.... I don't know why it's not working.
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