I have a class like this. Property "isPag" is based on filed "ecboardid", I found that when ecboardid is changed, UI controls seem not be able to detect that "isPag" is also changed. So, how to make a property like this bindable?[code]...
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I have Class1 with a read-only bindable property called age:
public class Class1 {
private var _age:int;
[Bindable(event="ageChanged"]
[Code]....
Of course the [Bindable] tag there doesn't make sense. But how can I achieve the same effect?
I believe I can dispatch some sort of ageChanged event from Class2 up to Class1 and then have an event handler in Class1 dispatch another local ageChanged event to which I bind Class2's age property.
In my flex app I have a public bindable property.I want it so that every time the value of that property changes, a function gets triggered. I tried using ChangeWatchers, but it seems those only apply to built-in components like a text box change.i would like to do that same behavior with a property that changes at runtime.
View 4 RepliesI've got a component called Box.as that has following two properties, and have their getters & setters defined:
private var _busy:Boolean;
private var _errorMessage:String;
In MXML that uses this component I define it like this:
<components:Box skinClass="skins.components.BoxSkin"
busy="{presenter.boxBusy}"
errorMessage="{presenter.boxErrorMessage}"/>
Where presenter variable is defined here in MXML and a Presenter class has boxBusy and boxErrorMessage variables defined as bindable property change events:
[Bindable(event="propertyChange")]
function get boxBusy():Boolean;
function set boxBusy(value:Boolean):void;
[Code]....
PROBLEM is that whenever I change boxErrorMessage for the presenter, I see the affect in MXML but nothing happens at all when I change boxBusy. Is there something extra I need to do with boolean variable?
I have inherited an Adobe AIR application, and am attempting to debug it through Flash Builder 4.5. Within Flash Builder, when I look at one of the MXML files, I see warnings for each use of the [Bindable] tag:[code]And there are no missing semi-colons on the lines preceding each warning as per the suggestion in this blog post.The project is configured to use Flex SDK 3.6.Additionally the file will not load in the designer, with this warning:Design mode: Error during component layout. Choose Design > Refresh to refresh design mode.At runtime I am seeing a blank window - which I assume is the result of the bindings not being triggered. Is this tag not available in Flex SDK 3.6?
View 1 RepliesI have the following code:
<fx:Script>
<![CDATA[
import shared.GlobalsManager;
[code].....
Is it possible to use the Bindable compiler setting when using mxml?
I've got a string that I want to make bindable:
<mx:String id="myString">My Text</mx:String>
I could make it bindable in Actionscript, like this:
[Code]...
But it threw a lot of warnings-- other classes were already marked bindable in my App.
If I create an object like so:
class Foo {
[Bindable] public var property: String;
}
The class Foo has an implicit event dispatcher to handle property change events. How can I access that without making Foo explicitly extend EventDispatcher?
I have a small question. I am probably misunderstanding something, but when I do :
[Code]....
My Combobox is not alway updating when I update the ArrayCollection.[code]...
the first time it updates the combobox fine and sometimes it works the 2nd, 3rd, etc time is might update the combo box. After it stops updating the combobox, it never does until I restart the app. I have verified that the ArrayCollection is updated via the debug data, it is just the combobox is not updating the display.
I have a Number variable, named isConflict, whose value is passed in from a parent. I would like to put a ChangeWatcher on this item so that a function named changeBGColor will run whenever the value is changed. Within my creationComplete function of init, i have the following:
var isConflictWatch:ChangeWatcher = BindingUtils.bindSetter(changeBGColor, this, "isConflictChain");
I am just just curious as to whether the [Bindable] metadata tag in ActionScript 3 can only be used within the Flex framework, or can it be used in "regular" ActionScript projects where Flex isn't used?
View 1 RepliesActionScript allows you to mark a variable as [Bindable], causing any changes to that variable to have immediate effect all over your application.How would you implement this feature in your favourite programming language?
View 1 RepliesI'm studying a demo code and it seems to me that an instance of a class is never instantiated, in particular I have this line:
[Code]....
I have a situation where I need to update a DropDownList's dataProvider and selectedItem in a specific order. See the following code ...
<s:DropDownList id="dropDownList"
dataProvider="{someDataProvider}"
selectedItem="{someSelectedItem}" />
In my case, some user interaction produces new values for the bindable variables "someDataProvider", and "someSelectedItem". However, when flex renders the DropDownList, the control's selected value is empty.
The reason for this is that the DropDownList's "selectedItem" property gets bound before the "dataProvider" property. The "dataProvider" needs to be bound first for "selectedItem" to be valid, this is because the new "selectedItem" points into the new "dataProvider".
what is the best practice for updating bindable properties in a specific order? I've come up with a few ways (e.g. using a valueCommit handler), but I wanted to see what the community had to say.
I'm trying to extend a class like panel so that I can fire click events only when the title area is clicked on. The title area is a protected uicomponent of Panel called titleBar. So I want to make that component public.It seems like I'm almost there but I'm getting a "TypeError: Error #1009: Cannot access a property or method of a null object reference." when it tries to add an event listener to the titlebar.
here is my extended panel
package custClass{
import mx.containers.Panel;
import mx.core.UIComponent;
public class ExtPanel extends Panel{
[code]....
And then this in the AS:
newPanel.getTitleBar().addEventListener(MouseEvent.ROLL_OVER,over);
Still getting the same error.
How do you make the childAllowsParent property of an SwfLoader go from false to true, that is, how as a parent application do you set up security to make the child app's events and other properties accessible to you. To read the flex docs on this, one would think nothing could be simpler:
"This property [childAllowsParent] is set to true if the child object has called the allowDomain() method to grant permission to the parent domain or if a URL policy is loaded at the child domain that grants permission to the parent domain. If child and parent are in the same domain, this property is set to true . [emphasis added]" So, I'm in a development environment and want to load an swf from my own system via an SWFLoader and then be able to monitor its events within the parent app.
[Code].....
I am unable to bind the selectedIndex public property of a spark DropDownList to it's original source in the view's presentation model.
For the purposes of replicating this issue with as few lines as possible I have two views, and one presentation model. The code follows.
Main.mxml
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
[code]...
Debugging the application I find that selectedIndex in the presentation model always remains at the default value assigned regardless of which item I selected from the DropDownList. For the sample code above this is -1.How can I bind the selectedIndex in the presentation model such that it is updated appropriately when the selected item DropDownList changes?
I have a class called which is called ChartInfo,and it has a getter and setter methods as:
[Code]....
It will always give error like: 1195: Attempted access of inaccessible method isShowingPower through a reference with static type components.charting:ChartInfo.
Setting the text property of a flex DateField makes the selectedDate property of that DateField go to null.I need to set the text property so that I can use a particular format (DD-MMM-YYYY).
View 2 RepliesLately i discovered MATE (for Flex development) and was wondering: how do i bind a property in a view (actually a navigatorcontent component) to another property in a class so that they stay in synchronization (meaning that whenever the property in the class changes the property in the view also changes).
So if we have a view called Target.mxml and a property targertProp how do we bind it to the class called SourceClass with property SourceProp?
Can we put [Bindable] on functions/methods? I know that bindable is used to change the value of the source property to destination property. But not sure if we can use that for methods. why we cannot put/ if we can then what will be the outcome?
View 1 RepliesI'm wondering if there is a way I can bind a flex property to flash property?, the flash property is inside a swc file created in flash with the Flex Component Kit for Flash Professional, I can manipulate the flash component as a regular flex component, but I want to bind their properties, is there a way?
View 1 RepliesI'm encountering something a bit bizarre, but maybe someone else came across this before.
I've got a base class, that doesn't extend anything. Let's call it...
public class FooBar {
//...
}
But I want to bind EVERY single one of its exposed properties:
[Code]...
I have a singleton class that looks something roughly like this (only with more bindable public properties):
public class Session extends EventDispatcher
{
private var _Id:String;
private static const _instance:Session = new Session( SingletonLock );
private static const SESSID_CHANGED:String = 'SessionIdChanged';
[Code]...
The abnormal behavior I'm discovering is that the event listeners registered through registerOnSessionChange are indeed being called when the session Id changes, but the MXML data binding expression is not updating. I've tried all combinations of dispatching the event during the capture phase, and making it not cancelable, but to no avail. My understanding of [Bindable (event= ...)] is that the MXML should update the url string when the event specified is dispatched, so what am I doing wrong or misunderstanding?
Note: I realize there are lots of different ways of doing the singleton pattern in Actionscript, but unless the way I am doing it is actually causing my problem somehow,
Is there a way to make a property read only from outside of the class?
View 5 RepliesI cannot find and information on how to make a dynamic sharedObject data property.
Simplified Code for what I need/want to do
var iData:SharedObject = SharedObject.getLocal(userInfo);
var dataArray:Array = ["a","b","c"];
var property:String = "prop"
iData.data.this[property] = dataArray;
That is what i was thinking.
It doesn't matter how the property is created, just that it needs to be done on the fly.
Is there anyway to make it so that globalVariablesArray[0] always contains the 'new' value of theState.stateGrowth, even if it changes? In other words, store the property itself in the array, not just the value of it?
View 1 Repliesi been trying to figure out a way to make sure my property values from my xml file are fitting sweetly into my classes.
using 'property is XClassType' pretty much tells me if its an array, boolean, number. But strings are a bit weird. Even though the property is declared public var some:String the below test doesn't trigger it being set to a String. Are Strings different than Boolean, Array, Number, etc.?
Code:
if (myTarget[i] is String) {
trace("prop is string");
myTarget[i]=String(mySource[i]);
}
I am not able to get the Id property for flex components in my flex application(swf file) using Test Object Inspector in Rft Tool.
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