Actionscript 3 :: Flex Custom TreeItemRenderer That Changes Based On Type Of Object?
Oct 7, 2011
I have a Flex tree control that holds a tree full of various types of objects. I'd like to change the label of the item based on this type (and other properties). I'd prefer to do this in a custom TreeItemRenderer rather than via label or labelfunction.It seems that whatever I do, I cannot typecheck nor cast the objects and thus I get [Object object] in the nodes of my tree. Here is my renderer:
public class MyCustomTreeItemRenderer extends TreeItemRenderer {
// Overriding to set the text for each tree node.
override protected function updateDisplayList(unscaledWidth:Number,
[code]....
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Jun 4, 2011
I have the follow code - as TreeItemRenderer
<?xml version="1.0" encoding="utf-8"?>
<mx:TreeItemRenderer 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:solar="*">
[Code]...
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Jan 16, 2009
I have created custom TreeItemRenderer in which i am trying to draw colored Hbox bar at each node except root. Intially when i click on root node it opens first child node with bar but when i open leaf node it does not showing bar and removing existing bard from other few child nodes. Its calling itemrenderer on mouseonver eventhough i have disabled.Attaching Code here
package Adodbe.renderers
{
import flash.display.DisplayObject;[code].....
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Feb 8, 2010
I need to create a custom Object that basically stores some custom parameters (properties?), which I have successfully done, and the code below works fine.
PHP Code:
myObject = new Object();
myObject.nameLabel = "New Releases";
myObject.artOrientation = "portrait";
myObject.artAmount = 5;
I find the new compiler and debugger capabilities very useful, since I'm not the most detail-oriented, so I (usually) like that Flash forces me to strict-type my variables and such. Anyway, I was wondering if it's a "best practice" to strict data type a custom objects' properties, and if so, how to do it in the logic above? I kept getting syntax errors when I just tried it initially.
I know if I created a custom Class .AS file, I would be forced to data type the properties... but I'd rather just do it "in-line" in my main .FLA file. Also, I know I can just pass typed VARIABLES to the properties... but I'd rather have the properties strict-typed themselves... so if I try to pass a variable as the wrong type, then I would still get an error.
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Nov 4, 2009
I'm using a tree control that I want to customize. The data items in the tree's dataProvider have a property name that should be used for labeling the node, and a property type that should be used to select one of several embedded images for use as an icon. The simplest way to do this is by using the labelField and iconFunction properties.
However, I wanted to get started with item renderers and open the door for adding more complex customization later, so I tried making my own item renderer. I extended the TreeItemRenderer class as follows and used it in my tree control:
class DirectoryItemRenderer extends TreeItemRenderer
{
[Embed("assets/directory/DefaultIcon.png")]
private static var _DEFAULT_ICON:Class;
[Code]....
This code has no effect whatsoever, icon and label in the tree control remain at their defaults. Using trace(), I verified that my code is actually executed.
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May 25, 2010
I have 2 custom components, which have their own nesting hierarchy ... One is container for another. I have to "familiarize them" with each other. The way I'm trying to achieve that is using global events (one side is firing and the other one is catching):
Application.application.addEventListener("Hello", function (data:Event):void{
// .. some actions
});
[Code]...
Then should be created the connection between container and it's child.
BUT, the only thing I could acheive is passing a reference to the Container in the DynamicEvent. Is there any chance that I could access the child at the event-handler function.
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Oct 30, 2011
I have created a custom component based on spark.components.HGroup and it works mostly as needed, but I have this minor problem: I can not move it.
Maybe someone will look at my simplified test case below and spot my error?
Here is the screenshot of my 3 custom components, representing chat bubbles:
Here my custom component Bubble.mxml drawing black text on green background:
<?xml version="1.0" encoding="utf-8"?>
<s:HGroup
xmlns:fx="http://ns.adobe.com/mxml/2009"
[Code]....
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Nov 28, 2011
I have a problem with a custom component based on a Group. Actually, I want to create a section component (a container with a border and a title). I created a path so that the border doesn't hide the label (title):
[Code]...
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Aug 6, 2011
We create Objects in flex by declaring type Object. for example
var objSampleObject:Object = new Object();
and we create properties directly with dot operator without creating any class
[Code].....
My question is in above process is there any class is created internally by flex?
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Feb 20, 2012
How can I send a custom response upon a custom request on a xampp/wamp based Apache server upon a connection to a specific port?I'm trying to reply to the � a flash app is requesting in order to allow a crossdomain http GET request.The flash policy request, is made to port 843 by default and i'd like to keep it that way.The port should get a � (ending with a null char,� is just for the reference) and replying with something like:
<?xml version="1.0"?>
<!DOCTYPE cross-domain-policy SYSTEM "/xml/dtds/cross-domain-policy.dtd">
<cross-domain-policy>
<site-control permitted-cross-domain-policies="master-only"/>
[code]....
As far as i know, the request should be return as a plain text, although Content-type, might be needed as well.I've tried using the following:[URL] and although it listens to the port and accepts connections, it doesn't reply with the specified xml upon request.I wrote a simple C# web server which listens to port 843, and serves the aforementioned policy - it worked out just fine, however, when using a SecureSocket connection for a secure connection (i.e opening a socket to a HTTPS/SSL protocol) - the request that is sent is encrypted using the hosts certificate. As far as i know, there's no way of listening or acquiring the servers certificate and decrypting the data via an external app hence, the only way is to somehow 'teach' Apache to respond with the crossdomain policy after a proper request is sent via an appropriate port.
Another idea i have is to read the server's certificate file stored in the Apache directory regardless of what happens on the server itself, though imo it's an overkill.
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Jul 28, 2009
In my flex app there are a few custom components. I want to create instance of these components at runtime and assign them properties by reading in a config file. I know how to read xml and instantiate components, however my question is about being able to get the type of the component from the xml attribute and then creating an instance of that type.
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Jan 28, 2011
I use this code to create and show a MessageWindow:
var newTitleWindow:MessageWindow = PopUpManager.createPopUp(contextView,MessageWindow, true) as MessageWindow;
newTitleWindow.text = message;
PopUpManager.centerPopUp(newTitleWindow);
[Code]....
There is no nested components displayed when I run my app.
The debugger shows they are created and visible.
To my "amusement" the components are shown when I replace s:TitleWindow with mx:TitleWindow.
I really want to use spark TitleWindow.
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Mar 23, 2011
I am trying to dispatch a custom event from one flex module to another.The code which dispatch the event is as below Application.application.Destination.child.dispatchEvent(
new AlgoEvent(AlgoEvent.GETFROMPARENT_LOCAL_EVENT));
here AlgoEvent is a custom event.on the other side the module which catches and handles the event has this code:
public function sendParametersToChild(e:AlgoEvent):void
{[ code]...
but when the statement Application.application.Destination.child.dispatchEvent(new AlgoEvent(AlgoEvent.GETFROMPARENT_LOCAL_EVENT)); is executed the debugger give the following run time exception:
TypeError: Error #1034: Type Coercion failed: cannot convert resources.events:: AlgoEvent@4182239 to resources.events.AlgoEvent.at flash.events::EventDispatcher/dispatchEventFunction()[code]...........
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Feb 11, 2011
I have a tree with nodes , and a delete button , first user select the node and click this delete button , I want this node to be removed from the tree , Its not XML , every node in tree is of type Object
{label:'folder',children:[{label:'file1'}]}
I tried delete myTree.selectedItem (but compiler wont let me do it) also tried myTree.selectedItem = null (just unselects the item)and also how can I access reference to parent object of myTree.selectedItem ?
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Nov 3, 2009
Here's the example:
var cartesian:CartesianChart = new CartesianChart();
cartesian.width = 100;
var column:ColumnChart = new ColumnChart();
column = cartesian as ColumnChart;
Why does this not work? "column" ends up null. ColumnChart is a derived class of CartesianChart, so I would have thought I'd end up with a ColumnChart with a width of 100.
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Jul 20, 2009
I need to remove the value associated with a property in a Flex 3 associative array; is this possible?
For example, suppose I created this array like so:
var myArray:Object = new Object();
myArray[someXML.@attribute] = "foo";
Later, I need to do something like this:
delete myArray[someXML.@attribute];
However, I get this error message at runtime:
Error #1119: Delete operator is not supported with operand of type XMLList.
How do I perform this operation?
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Jun 14, 2010
how do i change the item selected in a combobox selection based on a selection of a datagrid object?
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Jun 13, 2011
1118: Implicit coercion of a value with static type Object to a possibly unrelated type flash.geom:Rectangle.I got this error coming from the bold words when I tried to use this AS2 code in my AS3 stage. I'm currently trying to convent an AS2 printing of DataGrid to AS3. [code].....
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Jan 20, 2010
I'm in the beginning stages of trying to understand AS3.Flash is outputting these two errors:1118: Implicit coercion of a value with static type Object to a possibly unrelated type Function.1120: Access of undefined property event_obj.
Code:
my_cb.addItem({data:1, label:"First Item"});
my_cb.addItem({data:2, label:"Second Item"});
my_cb.addItem({data:3, label:"Third Item"});
[code]....
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Nov 21, 2011
I have the code in one of my flex file used as labelFunction in a DataGrid.When I run the FlexPMD to do the code review, it generates an objection about the dynamic type object used in the following method signature and it suggests to use strongly type object.
public function getFormattedCreatedTime(item:Object, column:DataGridColumn):String {
var value:Date=item[column.dataField];
return dateFormatter.format(value);[code]....
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Jan 7, 2011
Is there a quicker way besides iterating thru all entries in the associative array Related to - How do I delete a value from an Object-based associative array in Flex 3?
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Jan 25, 2012
I have a a structure like this:
e.item.fatturato_ac_s1
e.item.fatturato_ac_s2
e.item.fatturato_ac_s3
e.item.fatturato_ac_s4
[...]
and so on...
In order to compute dynamically the string I wrote:
e.item.(myStr.toString()) where myStr (type string) = "fatturato_ac_s" + Index (so I can have fatturato_ac_s1, fatturato_ac_s2, ...)
I can correctly retrieve the value of e.item.(myStr.toString()) (a numeric value), but if I try to put it in a variable I get the error in the title:
myVariable = e.item.(myStr.toString())
myVariable is a Number.
I also tried:
myVariable = Number(e.item.(myStr.toString()))
But doesn't work... the same if I try String to String....
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Oct 11, 2009
I keep getting the following error msg below I would be very happy if some knows the solution to this: Error Msg: 1118: Implicit coercion of a value with static type Object to a possibly unrelated type flash.events:Event Object A dispatches Event as:
[Code]...
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Apr 28, 2011
My application currently contains a number of Widgets that are managed by a Widget Manager. When the user clicks on a widget (e.g. a Helper widget), the Widget Manager loads the widget into a separate sibling application domain with the following line of code:
wgtInfo.load(null, null, null, moduleFactory); //wgtInfo = IModuleInfo
However, I am unable to use the widget's variables and functions later on. I attempt to find the Helper widget from the Widget Manager's list of widgets, and I do successfully. But when I try to caste the Helper Widget from type IBaseWidget (the interface all widgets share) to type HelperWidget, I receive the following error:
TypeError: Error #1034: Type Coercion failed.....
This is because the application domain of the class trying to use the Helper widget is different from the application domain of the Helper Widget. I tried to fix this by loading all widgets into the same application domain as the loader:
wgtInfo.load(ApplicationDomain.currentDomain, null, null, moduleFactory);
I now get the following error whenever I attempt to load the Helper widget:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
How can I load my Helper widget into a common application domain that is accessible by the other widgets?
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Oct 20, 2010
I have a need to validate a field against our database to verify unique-ness. The problem I seem to be having is that the validators doValidation() exits before we've heard back from database.
How can I have the validator wait to return its payload until after we've heard from the DB?
Or perhaps a better question might be (since I think the first question is impossible), how can I set this up differently, so that I don't need to wait, or so that the wait doesn't cause the validation to automaticallly return valid?
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Jun 23, 2011
I'm in a Flex Mobile application project. I need to dispatch an event to the lexGlobals.topLevelApplication and it has to contain a custom message. I'm trying to make an object and dispatch it like this:
//create the event Object
var receivedObjMsg:Object = new Object();
receivedObjMsg.name = "receivedMessage";
receivedObjMsg.message = messagevarhere;
[Code]...
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Feb 26, 2012
I get this error when compiling an AS3/Flex project: Error 1118: Implicit coercion of a value with static type Object to a possibly unrelated type HRPeople I've clearly declared dataHR_A to be of class HRPeople, and I've initialized all of the arrays inside the HRPeople.as file. Not sure why I'm getting this error.
[Code]...
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Mar 10, 2011
say i have an xml node like this:
Code:
<vars>
<start>45</start>
<duration>10</duration>
</vars>
how would i go about parsing that out into an Object so that it looks like this:
[Code]...
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Feb 2, 2010
I have a quick question about getting the value from control which I added in my data grid by Item render and how can I get that control object when I am clicking on the cell of that column.
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May 25, 2009
I have a custom actionscript object defined as bindable with a number of public properties.
[Code]...
but no luck with that either. I'm probably missing something simple here, but not sure what it is.
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