[flexcoders] Re:This component won't populate with data

[Pilby]

DOH! (slaps himself on the head)
 
I really should avoid continuing to work when I'm already dead tired. :(
 
Thanks guys.

[flexcoders] Re:How do I detect 'enter' key on a textInput control?

[Pilby]

Here is one way to do it. Let's say this is your mxml:
 

 
Then your keydown handler would be:
 
// Waiting for return key
private function txtKeyDownHandler(event:KeyboardEvent):void
{
if (event.keyCode == 13)
{
// do something
}
}

[flexcoders] Re: Datagrid question

[Pilby]

>> ".iterate through each row." You absolutely *cannot* do that, because all
>> the DG rows do not exist, only the rows currently visible exist.
>>
>>You need to have your renderer update the dataProvider with the generated
>> value, then iterate through the dataProvider. This should not be
difficult.
>>
>> Tracy Spratt,

I guess I would have to add an additional "license" field in my
dataProvider, and I will just have my component itemrenderer put the data
into that field, and I'd be able to iterate through my dataProvider to
access the data. Okay, thank you for your advise on this, and this is all
great and dandy.
 
But please allow me to pick your brain a little more. Let's say my
application still contained the same data format as described so far. But
this time, my application is limited to a fixed 3 row x 3 column grid where
everything is visible (and such, all are existent), is there a way to access
the data without using the dataProvider? In other words, is there a way I
can get a reference to each row, which presumably will be an array of
columns, and then access the data similar to the way you would a
two-dimensional array, keeping in mind that some of the cells can contain
MXML components, and hence, require obtaining the reference of that MXML
component in order to access its properties?
 
 
 

[flexcoders] Re: Datagrid question

[Pilby]

Thanks for responding, Tracy.

Let's say this is an application that allows generation of license numbers.
Imagine this:

You have 3 columns in the datagrid. The first and second columns are the
first and last names of a person. The third column is a button (which is
really part of an MXML component) that has it's 'label' set as "Click to
generate license number". When the user clicks the button, the logic to
generate the license number is within the component and will be output to
the label property of the button, and the button will no longer be
clickable. The application allows multiple people to be listed in the
datagrid. Outside the datagrid, there is a button that says "Click to print
all".

Given the specs I described so far, it's clear that I have to be able to
iterate through each row in the datagrid, extracting the data from each
column of each row. Typically, I would just get the dataProvider array
collection object, and the problem would be solved. But because the license
number is being output through the label property of the button (which is
part of a MXML component) and is not part of the original dataProvider data,
I can't go that route.

I figured I now have to somehow iterate through each row, grabbing the data
of each column of the row and storing it somehow. Is there a way for me to
get the license number from the label property of the buttons?

[flexcoders] Re: Another on try-catch-finally ...

[Pilby]

There is a possible benefit to having a try/catch with an empty catch block
-- that your application won't stop execution. If the problem that occurred
in the try block does cause a subsequent problem down the road, that's a
different story.

[flexcoders] RE: Passing array to component

[Pilby]

In the application 
where the component resides, I have a 3-element array of strings called 
"myArray" that needs to be passed to my component. So my code 
is:
 

 
where "myComponent" 
is my custom component, and "myArray" is the 3-element array of 
strings.
 
 
Inside the 
component, I have this attribute defined:
 

 
When I 
do:
 
alert(arrObj[0]);
 
from within the 
component, it's not showing what I had passed in, which tells me the 3-element 
array of strings is not being passed into my component correctly. 

 
I figured that 
perhaps I'm not doing it syntactically right in my component? Any help would be 
greatly appreciated.







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[flexcoders] RE: SharedObject stores data unpredictably?

[Pilby]

I have an 
editable combobox where I am saving the entries entered by users. I am 
saving them to a SharedObject. 
 
When I later 
retrieve the data from this SharedObject, I noticed that the data are no longer 
in the original order. For example, if the data currently in the combobox 
dropdown were the strings A, B, C, and D from top to bottom, after I do 
a:
 
var comboBoxSharedObject = 
SharedObject.getLocal("myCookie");
 
    
delete comboBoxSharedObject.data.dataProvider;
comboBoxSharedObject.data.dataProvider 
= dataProvider; // where dataProvider is the combobox's 
dataProvidercomboBoxSharedObject.flush();
 
When I later 
retrieve this same set of data later, the order of A, B, C, and D are no longer 
preserved. Instead, it comes back in some other sort order.
 
Any suggestions on 
how I can prevent this problem?







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RE: Tree component confusion

[Pilby]

My objective is to 
allow the user to drag a tree node and drop it on another node, and then reflect 
visually the changes he/she has made.
 
I since learned this 
is a lot more complicated than meets the eye because the index of the drop 
location seems to change. From what I have seen, the moment a branch opens,its 
index becomes 0, and when it's closed, it's index becomes relative to its parent 
node. So if Node A is the topmost node, and Node B is its child node, whileNode 
B is closed, it's index is 1, but the moment I open Node B, it's index becomes 
0.
 
This is aproblem 
because the only method I see that I can use for my purpose is the 
addTreeNodeAt(index). And if there were multiple branches open in the entire 
tree, we end up having multiple nodes with the SAME index!
 
Can anyone give me 
an example of a drag-n-drop operation entirely within a tree? The examples I 
have found deal with dragging datagrid items on a tree, or dragging items from a 
tree to a list box. What about an example that drags a tree item and drops on 
another tree item within the same tree?

How to open a tree branch by default

[Pilby]

I noticedI could 
simply add an isBranch="true" to an xml node, and it would know to use the 
branch icon as opposed to the leaf icon. Is there something similar to makea 
branch OPEN or CLOSE?
 
I know there is the 
setIsOpen() method, but that requires me to have a reference to a node to work. 
What I wanted to accomplish was just being able to pass XML to a tree, already 
pre-specifying which nodes will be open and which nodes will be 
closed.
 
Does anybody know 
how to do this with having to use the setIsOpen() method?
 
Thanks.

How do I get references to children of a container?

[Pilby]

If I had a 
 which had 3 buttons, how can I access references to 
these 3 buttons programmatically?
 
I have tried 
:
 
for (var p in 
cvs)
    alert(p);
 
But I seeno 
property I can use to iterate through the children, nor do I see the "id" of 
these 3 buttons.
 
Thanks.
 

Getting mouse coordinates at a drop operation

[Pilby]

How can Iget the 
mouse xy-coordinates? I'm trying to drop an object into a Canvas, and I'd like 
the object to position itself where it is dropped, and I can't do that unless I 
knew what the mouse xy-coordinatse are at the time.
 
Thanks.
 

htmlText property doesn't support tag?

[Pilby]

I have a 
 control where i'm equating its htmlText property with a 
full-fledged html document. The results didn't come out too well. I'd like to 
say it doesn't support the  tag, but in the final rendering, it 
seems that boldfaced and italicized text are coming out right, and I don't see 
 tags in the result either. So it seems to me that Flex was able to 
parse the  tags but just didn't render it right. All formatting 
expected from the use of  didn't seem evident to 
me.
 
I just wanted to get 
something official from the Flex community. So the htmlText attribute of the 
 does not handle  tags?
 
Thanks.
 

How do I create a listener WITH parameters for a button dynamically?

[Pilby]

Here is an example 
where I am creating a button using mxml:
 

 
Notice mythat the 
click event refers to a function, btnOKClicked, passing 4 parameters to 
it.
 
 
Here is an example 
of me creating the same button, BUT dynamically:
 
var temp = 
this.createChild(mx.controls.Button, null, { id:"btnOK" label:"OK" 
});
 
Now here is my 
question. How do I dynamically define a listener for this that allows passing 
multiple parameters?
 
I would normally do 
this:
 
temp.addEventListener("click", mx.utils.Delegate.create(this, 
btnOKClicked));
 
But this includes 
only the function name (btnOKClicked), but I want the click event handler 
of this dynamically-created button to pass the strings, "hello", "blue", and 
"bird" as well. How can I do this?
 

RE: Halotheme.fla

[Pilby]

I know Flex allows 
programmatic skinning, but we have a graphic designer who needs to modify the 
theme in a non-programmatic fashion. In Flash, it was easy to find Halotheme.fla 
and modify it, but I can't find the corresponding theme file for Flex. 

 
Does anyone know 
what filename the theme file is for Flex and where to find 
it?
 
Thanks.

RE: Mouse cursor change question

[Pilby]

How can Ichange the 
mouse cursor to a hand, just like the hand cursor we get when the mouse is 
hovered over a mx:Link control? And how do I change it back to the normal 
cursor?
 
Thanks.

RE: Drag proxy question

[Pilby]

The reference guides 
say that the third parameter of DragManager.doDrag() 
is:
 
"dragImage: Object - 
Reference to a class or the linkage ID of a symbol that specifies the imageto 
drag around. To specify a symbol, use a string that specifies the symbols name. 
To specify a class, pass in the constructor for the class."
 
If I had a mx:VBox 
with a label and image in it, and I wanted the drag image to be the entire VBox 
(just what I see on the screen), how/what would I specify in this third 
parameter? Is it even possible?
 
Thanks.
 

Drag-and-drop question

[Pilby]

Does Flex's 
drag-and-drop support dropping of mx:Button or mx:Text objects into a container 
like a mx:VBox? Or am I limited to dragging only items from a Tree, a List,or a 
datagrid?
 
When I try to drag a 
mx:Text control onto a mx:VBox, everything seems to go find until the DragDrop 
event where I try to do:
 
var dragItems = 
event.dragSource.dataForFormat("items");
 
and dragItems 
is always returning "undefined".
 
Does anybody have 
any suggestions?
 
Thanks.
 

RE: htmlText question

[Pilby]

I am posed with a 
requirement where a display of mixed fontweights and fonts is needed. For that 
reason, I chose to use a mx:Text control via its htmlText property, applying the 
appropriate HTML to accomplish this. More specifically, the mx:Text box was 
supposed to contain a company name on the first line in bold face, and a 
person's name on the second line in italics.
 
But then,I was told 
that both of them were supposed to be hyperlinks that FLEX was supposed to 
respond to!
 
The only way I know 
of creating a link which Flex can respond to is via the mx:Link control. 
However, if I go that route, I lose the ability to display mixed fontweights and 
fonts.
 
Can anyone give me 
any suggestions on how to accomplish these two things:
 
1) Be able to 
display mixed fonts and fontweights, AND
2) Be able to have 
links in the display text that FLEX (not the browser) will respond 
to.
 
Thanks.