Flex :: Update UIComponent Size?
Feb 23, 2010
I've created a AS3 class which extends UIComponent so that I can easily add it to my MXML layout. It works fine, but I'm trying to figure out how to update the UIComponent width and height dynamically. I want my super UIComponent to draw a border around the content, so I need get the specific 'content' dimensions in order to do this.
I understand the idea of UIComponent is that you are supposed to specifically set the width and height... but I am literally only extending it so that I am able to use my custom component with MXML easily.Is there a method in which I can get the width and height of a UIComponents 'content'?
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Mar 1, 2010
I have following problem:
Code:
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[code]....
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Aug 18, 2009
I have 1 class (that is extending a UIcomponent) that is representing a component. In that component I create different instances of another class that is also a UIComponent but this class doesn't show up in de first class. I see that it is running and that it has the correct hights but I got the feeling that it doesn't show up with this hights. If I trace I see the width and height is 200 X 200 but there is still nothing visible in my component.
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Oct 9, 2009
I am new to Flash/Flex. I would like to use a Component I created in Flash extending fl.core.UIComponent. How do I use this in Flex? Do I just export it as a swc or do I have to use the Flash Flex 3 kit which will convert it to a UIMovieClip. That does not sound right.
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May 27, 2010
I'm trying to put a label and an image on a UIComponent, side-by-side. I want to use UIComponent for efficiency reasons, and the entire component is more complicated than just a button with an icon.
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Oct 22, 2010
i am trying to add a uicomponent which contains an object of a custom class the extends UIcomponents and i want to display this uicomponent to canvas i have done no error compile or run time but it does not display the Uicomponent.
here is code;
var item:RecordRanderer = new RecordRanderer();
item.randerItem(child);
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[Code]....
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Nov 10, 2010
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Apr 15, 2011
i want to add UIComponent inside a spite. here is the code:
private function make() : void {
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Oct 10, 2009
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[Code]...
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Jan 4, 2010
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Mar 9, 2010
I have a NumericStepper declared as a UIComponent:
<![CDATA[
private var component:UIComponent;
component = new NumericStepper();
]]>
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Apr 8, 2010
I currently am trying to add a custom class which subclasses UIComponent to both a tree and a canvas, but when I try to re-order the tree by dragging I get this error:[code]When I do not add the UIComponent to the canvas, this error does not occur, anyone have any knowledge as to why this happens?
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Aug 3, 2010
Extremely frustrated with this. I've created a simple class that extends the UIComponent. I create an instance of this class in a parent class and utilise the 'addChild' method to add it to the parent. I've overridden the 'updateDisplayList' method of the extended UIComponent to add my own drawing routine using the 'graphics' object.
My problem occurs when I start attempt to change any of the following properties (x , y , width, height) either directly or using 'move' or 'setActualSize' because the UIComponent will no longer display - prior to changing any of these properties the object displays fine. I know the object is still there, the 'updateDisplayList' method is still being called (as I'm calling 'invalidateDisplayList' after each change) and it correctly reports the changes.
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Aug 10, 2010
I'm trying to drag an item from a datagrid and drop it onto a UIComponet. Basically I just want the UIComponent to know that something has been dropped onto it and allow it to access the data of the dropped item.
I thought just listening for the drop event would do it but it seems not.
I found lots of documentation on dragging from one IList to another but nothing for this.
<mx:UIComponent xmlns:mx="http://www.adobe.com/2006/mxml"
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Apr 18, 2011
I added a MXML component in flex and selected the base as UIComponent. I want to make it accessible so that automated testing tools can Access it. I am using TestComplete for automated testing. As TestComplete uses Microsoft Accessibility classes. Now it treat my component as the Graphics.
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Apr 20, 2011
I'm removing an UIComponent but parts of it last being visible. It redraws only when I move mouse around or something. I tried to do validateNow() on its parent, tried to do setTimeout(validateNow, 100) but it doesn't help. When I call it by setTimeout it seems these artifacts shown more rarely but it doesn't solve a problem in all cases. Please guide me someone to read about validateNow(), how it works and how to make these things correctly.
The code is below:
protected var bubble: SpeechBubble;
// creation
bubble = new SpeechBubble();
[Code]....
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May 1, 2011
I've been trying to draw a series of points using a UIComponent using:
var line : UIComponent = new UIComponent();
...
line.graphics.lineTo(renderPoint.x, renderPoint.y);
[Code]....
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May 30, 2011
I want to create a custom button in ActionScript. [code]...
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Jun 30, 2011
I'm trying to understand the difference between the owner and parent properties of the UIComponent.
<s:Panel id="panOne" title="Success">
<s:Label id="labOne" text="Hello World!!"/>
</s:Panel>
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I understand the owner property refers to the parent container of a component (Label in this case). But what does parent property actually mean? I think it relates to some skin concept which has a with id value of contentGroup.
exact difference between these two?
There is another link in the link provided by you. It explained these two terms very clearly. That link is: Gumbo DOM Tree API - Functional and Design Specification
I have pasted below the best lines from that page.
The parent of a visual element is the container directly in charge of laying it out. The owner of a visual element is the component that logically owns it. If a Button is in a SkinnableContainer, its parent is the contentGroup while its owner is the SkinnableContainer.
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Feb 13, 2007
If i try:
myCanvas.addChild(new Sprite());
i get the error that its not a mx.core.IUIComponent.
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Jul 15, 2009
I have some custom components, that derived from UIComponent. I overloaded the updateDisplayList so they have custom look. I've created a layouter that lays out these custom components, but to place them correctly, I have to know the custom componets width, height. They are created dynamically. After all of them created (creationCompleted event fired for every), i try to laying out them, but width/height property is still 0. I am also tried to add them to a canvas, before the layout process.
how to create custom UIComponent that placed dynamically, and get to know the width and height of it.
With the use of the mx_internal namespace I can set width and height (using the internal $width and $height fields), and it looks like it is working. But not so clean/good solution.
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Aug 21, 2009
What is the best way to render to a UIComponent which hasn't been added to the stage? (I'm using UIComponents as renderers for objects, and want to render new copies for image export, filtering, etc.) Two strategies I've seen/used so far include realizing the component to ensure it calls all the lifecycle methods: Add the component to Application.application, render with BitmapData.draw(), remove component. This is similar to what I've seen done for printing unrealized components as well. Add the component to a pop up window, render with BitmapData.draw(), dismiss popup after rendering complete. I believe both of these just rely on the UI not refreshing while the current thread/event is executing, though (1) could also rely on the component being realized out of view.
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Oct 23, 2009
Given this code:
[Code]...
Why does changing the width and height of uiComp not affect the Sprite? Wouldn't UIComponent provide Sprite with a Graphics object, which limits that area where Sprite can draw?
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Apr 19, 2010
I have a base ShapeContainer(UIComponent). I add a uicomponent which has mouse down listener to ShapeContainer. the listener works great. When I add a simple sprite(draw square) on the ShapeContainer, The listener does not work any more. In the code, if I comment below line, The event listener works fine.
[Code]....
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Nov 2, 2010
I've got some buttons that have toggle set to true. I'm trying to re-set the button's state to unselected. But, I can't access the button directly like:
button.selected=false.
I'm accessing the HBox's children which are the buttons. UIComonent doesn't have a selected property.
So, how do I de-select the toggle in this bit of code below?
for (var j : int=0; j < theHBox.numChildren; j++){
var child : DisplayObject = theHBox.getChildAt(j);
var myButton:UIComponent = child as UIComponent;
myButton.setStyle("borderColor", "blue");
myButton.visible = true;
}
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Mar 3, 2011
I am dynamically creating a UI component based on XML templates stored in database. Now I want to access one of the child component of this UIComponent Class. I dont see any children property in this class? How could I possibly traverse through each child comppnent of this class and set its properties according to some logic in code(which I could not do in templates itself).
[Code]...
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Jul 21, 2011
I have some kind of UIComponent grouping which may look something like this with the classes "Group" and "Element". Groups can have children and children may be elements or groups again, basically similar to a file system or the str+g group function in several graphics programs. The simplest form of a group is a group with only children which are also the most low level groups in the tree.
The display hierarchy is already existant, i try to persist it to xml.
Group
- element
- Group
- element
- Group
-element
-element
- element
- element
I want to rebuild this structure in an xml-document for persistence. I know how to build an xml document in Flex but not how to (recursively) traverse this n-tree correctly. For getting only the child nodes one could make use of the following algorithm (pseudo code). But somehow I don't understand how to create the xml from this.
walkTree(group) {
children = node.getChildren
if(children != null) {
for(int i=0; i<children.length; i++) {
if(children[i].isGroup()) {
walkTree(group[i]);
} else {
trace(child);
}}}}
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