I'm using an SWFLoader that I declared like this:
<s:SWFLoader id="widget" maxWidth="150" maxHeight="75" maintainAspectRatio="true" />
And I also have a method to set its source from a ByteArray:
public function set widgetSource(widgetSource:ByteArray):void
{
this.widget.source = widgetSource;
}
It works fine but it seems like setting widget.source is done asynchronously and I need to know when it finishes loading the data...I tried several things without success, including adding a Event.COMPLETE listener to 'widget' but the event is never fired. Any ideas?
You need to add the event listener to the loader itself, For example
var url:String = "yourlocation of file";
var myWidgetLoader:URLLoader = new URLLoader();
myWidgetLoader.addEventListener(Event.COMPLETE, completeHandler);
myWidgetLoader.load(new URLRequest(url));
function completeHandler(event:Event):void
{
trace(" fully loaded ");
}
Also you can add a progress event to check the progress of the loader, let us know how you go.
Related
from the last version update (from openui5 1.36.12 to openui5 1.38.4) the following code is not working anymore:
var myTable = new sap.ui.table.Table();
myTable ._oVSb.attachScroll(function() {
colorTheTableRows();
})
I'm using the "attachScroll" event in order to color the table rows with a specific logic.
Since last openui5 version update I get this error in console:
Uncaught TypeError: Cannot read property 'attachScroll' of undefined
I've tried to debug the problem and it seems that the object _oVSb has be removed from sap.ui.table.Table.
My final goal is to paint the rows with different colors based on the content ... is there any other way to reach this feature?
Thanks
Even i want this event some how came to this thread. i tried #Dopedev solution it was not working then i changed bit in that as below
$("#<tablid>-vsb").scroll(function() {
console.log("Table is scrolled")
});
instead of getting the tbody get the table-id-vsb and attach the scroll function
You can still get scroll event for your table using .scroll() of jQuery.
onAfterRendering: function(){
//Register handler for scroll event
$("tbody").scroll(function(){
// your stuff
});
}
Demo
I know that one of the earlier posts was already marked as the 'right' answer, but it did not work for me, so I thought I would post my working solution, as it might be helpful to others. The following code will work to effectively 'attach' to the vertical scroll event of a table in 1.38:
onAfterRendering: function() {
if (this.firstTime) { //You only want to override this once
var oTable = this.getView().byId("<YOUR_ID_HERE>");
//Get a reference to whatever your custom handler is
var oHandler = this.handleScroll;
//Store a reference to the default handler method
var oVScroll = oTable.onvscroll;
oTable.origVScrollHandler = oVScroll;
oTable.onvscroll = function(i) {
//Call the 'default' UI5 handler
oTable.origVScrollHandler(i);
//Call your handler function, or whatever else you want to do
oHandler();
};
this.firstTime = false;
}
},
var myTable = new sap.ui.table.Table("myTable");
After rendering:
sap.ui.getCore().byId("myTable-vsb").attachScroll(function() {
colorTheTableRows();
})
I've created a custom component with several inline item renderers that I use as a tooltip. The height of the component is unknown, as the data contents of the component are not known until runtime.
However, when displaying the tooltip, occasionally it extends beyond the boundaries of the flash application, thus, I'd like to be able to detect this occurrence and reposition the tip.
The problem is that the height and width of the component are, apparently, not available until after being rendered by the popup manager. (i.e. they are always 0)
But, I do not know any way of finding out when the popup is actually rendered and, therefore, the height/width values available.
I tried adding a resize event listener to the component, but it doesn't appear to work, though I most certainly could be doing something wrong since it seems to me that the resize event only gives you the "oldWidth" and "oldHeight" of the object, which, at first display, would be 0...and useless to me.
Any ideas about how to proceed?
-----Edit-----
I have a base class like this:
public class TTComponent extends Canvas
{
var _parentC:UIComponent;
var popped:Boolean = false;
var timer:Timer;
var _comp:UIComponent;
public function set parentComponent(pC:UIComponent):void
{
_parentC = pc;
_parentC.addEventListener(MouseEvent.MOUSE_OUT, mouseOut);
_parentC.addEventListener(MouseEvent.MOUSE_OVER, mouseOver);
}
public function mouseOver(evt:MouseEvent):void
{
if (_parentC != null)
{
timer = new Timer(150,1);
_comp = this;
timer.addEventListener(TimerEvent.TIMER_COMPLETE, function( tevt:TimerEvent ):void
{
this.move( somex, somey);
if (popped != true)
{
PopUpManager.addPopUp(_comp, parentComponent );
popped = true;
});
timer.start();
}
}
public function mouseOut(evt:MouseEvent ):void
{
if ( timer )
{
timer.stop();
timer = null;
}
//If we popped up, remove the popup
if ( popped )
{
PopUpManager.removePopUp( _comp );
popped = false;
parentC .removeEventListener(MouseEvent.MOUSE_OUT, mouseOut);
parentC .removeEventListener(MouseEvent.MOUSE_OVER, mouseOver);
}
}
}
Then, an extended renderer like this:
<c:TTComponent name="T" 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:c="components.*">
<s:BorderContainer>
...about 30 labels grouped in various manners
...2 lists with inline item renderers
</s:BorderContainer>
</c:TTComponent>
Now, the code is called like this:
var w = new TTComponent();
w.data = data;
win.parentComponent = this;
This will add listeners to the mouse over and mouse out events on the parent, whatever it is, and then show or hide the tooltip accordingly.
------Edit------
Using a portion of what a commenter below suggested, this is the solution I came up with:
Inside the TTComponent class:
import flash.events.Event;
import mx.binding.utils.ChangeWatcher;
private var heightWatcher:ChangeWatcher;
public function set parentComponent
{
...
heightWatcher = ChangeWatcher.watch(this,'height',onSizeChange);
}
public function onSizeChange(evt:Event):void
{
if (this.height != 0)
{
....calculate the new component coords
this.move(newx, newy);
}
}
Note that this additional code doesn't bind to any component variable, it just adds a watcher on the component property.
You could also try binding your width and height. If these are made bindable in your class, flex will automatically adjust your popup's width and height.
When using mxml for your binding, you can just do something like this
<mx:YourComponent height="{HeightOfYourTooltip}" width="{WidthOfYourTooltip}"></mx:YourComponent>
You can also add a eventListener that listens to the change event if you want to reposition you component, like so
<mx:YourComponent height="{HeightOfYourTooltip}" width="{WidthOfYourTooltip}" change="yourComponentResizeHandler()"></mx:YourComponent>
If you are using a programmed approach, you should should use the changewatcher. Below is shown how you can use that.
ChangeWatcher.watch(YourComponent, "width", repositionHandler);
ChangeWatcher.watch(YourComponent, "height", repositionHandler);
If you want to watch for other variables or properties to change, be sure to add the [Bindable]-tag above your variables in your class, like this
[Bindable]
var myVariable:SomeVariable;
I hope this helps.
For displaying toolTip which controls you are using in itemRenderer? Text or Label?
Try to Listen update complete Event of that component. May this Help you. :)
This might be messy, but on the pop up component, you could add an event listener after complete is fired, if the height or width == 0 then you setTimeout() to a function after say 100ms until you get valid data.
Yes, I know it is a bit of a hack, but those will eventually report correctly measured values so it's not going to call that many times.
Just an idea if you are against a deadline or something like this isn't critical. :)
I'm doing an Image Cache following this method: http://www.brandondement.com/blog/2009/08/18/creating-an-image-cache-with-actionscript-3/
I copied the two as classes, renaming them CachedImage and CachedImageMap.
The thing is that I don't want to store the image after being loaded a first time, but while the application is being loaded.
For that, I've created a function that is called by the application pre-initialize event. This is how it looks:
private function loadImages():void
{
var im:CachedImage = new CachedImage;
var sources:ArrayCollection = new ArrayCollection;
for each(var cs in divisionData.division.collections.collection.collectionSelection)
{
sources.addItem(cs.toString());
}
for each(var se in divisionData.division.collections.collection.searchEngine)
{
sources.addItem(se.toString());
}
for each( var source:String in sources)
{
im.source = source;
im.load(source);
}
}
The sources are properly retrieved.
However, even if I use the load method, I do not get the "complete" event... As if the image is not being loaded... How is that?
Any help would be appreciated.
Thanks in advance.
Regards,
BS_C3
I found the problem with my code =)
It was a declaration problem.
I moved the declaration of the cachedImage inside the for each loop where the images are loaded. So that I get something like this:
for each( var source:String in sources)
{
var im:CachedImage = new CachedImage;
im.source = source;
im.load(source);
}
And this does the trick.
I've done a lot of C# programming with both Winforms and WPF. I'm working on a Flex/Air app now for cross platform support. But this is my first flex project, so I'm learning as I go.
I've got a window that I want to popup, that the user will fill out a form, then hit OK or CANCEL. I set it up the same way I would've in C#, but it doesn't work, and I can't really see a way to make it do what I want.
EDIT:
So I'm trying events now, the events just don't seem to be handled...
EDIT again:
Oh, It's because the popup manager seems to create a new instance of the Form object, rather than using the one I created already.
so in the showWindow method, I put in this code rather than the popup manager:
parent.addChild(this);
then I remove it when I close it. The only problem is, it doesn't disable the rest of the parent like the popup manager does. Any suggestions on that?
PARENT:
private function btnAdd_Clicked():void
{
var form:Form = new Form();
form.addEventListener(CloseEvent.CLOSE, onFormClosed, false, 0, true);
recipeForm.showWindow(this);
}
private function onFormClosed(e:CloseEvent):void
{
//none of these Alerts are ever shown. I also tried breakpoints in debug to try an follow the code, with no luck
Alert.show("Closed");
if(e.detail == Alert.OK)
{
Alert.show("OK");
}
else if(e.detail == Alert.CANCEL)
{
Alert.show("Cancel");
}
}
CHILD:
private function btnCancel_Clicked():void
{
okClicked = false;
closeWindow();
}
public function closeWindow():void
{
var e:CloseEvent = new CloseEvent(CloseEvent.CLOSE);
e.detail = okClicked ? Alert.OK : Alert.CANCEL;
dispatchEvent(e);
PopUpManager.removePopUp(this);
}
public function showWindow(parent:WindowedApplication):void
{
var window:IFlexDisplayObject = PopUpManager.createPopUp(parent, RecipeForm, true);
PopUpManager.centerPopUp(window);
}
You can do this at least two different ways:
FIRST WAY: Using events
Let your Form class dispatch an event when either of the buttons is clicked. After Form is instantiated from the parent view, add an eventListener for the event(s) it's known to dispatch. When the Form dispatches the event, the eventListener will be invoked. You can even reuse Flex's CloseEvent and set the "detail" property to either Alert.OK or Alert.CANCEL before dispatching it.
In Form:
var e:CloseEvent = new CloseEvent(CloseEvent.CLOSE);
e.detail = okClicked ? Alert.OK : Alert.CANCEL;
dispatchEvent(e);
In parent:
var f:Form = new Form();
f.addEventListener(CloseEvent.CLOSE, onClose, false, 0, true);
...
private function onClose(e:CloseEvent):void
{
if (e.detail == Alert.OK)
// do something
else if (e.detail == Alert.CANCEL)
// do something else
}
SECOND WAY: Using callbacks
Add a public var of type "Function" to your Form class and supply a callback function from the parent. This does basically the same thing as #1 except with little less abstraction / indirection.
I would recommend #1 since the event model in Flex is pretty well-conceived and more flexible than the callback.
In Form:
var e:CloseEvent = new CloseEvent(CloseEvent.CLOSE);
e.detail = okClicked ? Alert.OK : Alert.CANCEL;
dispatchEvent(e);
In parent:
var f:Form = new Form();
f.addEventListener(CloseEvent.CLOSE, onClose, false, 0, true);
...
private function onClose(e:CloseEvent):void
{
if (e.detail == Alert.OK)
// do something
else if (e.detail == Alert.CANCEL)
// do something else
}
Not sure if this is still an open issue. I ran into this very same problem and I think I figured out what is wrong. At least I did for my problem.
I implemented things exactly as you did. I also have the close attribute set to closeWindow (I'm using a TitleWindow for my dialog).
So when the window is closed via the X at the top, it will call closeWindow, also if you click on the Cancel button, it will also call closeWindow.
The problem for me was that clicking cancel, dispatches a CloseEvent which seems to be caught by a Listener which calls closeWindow again (possibly via the close attribute which probably creates its own internal listener). I'm not sure if its an infinite loop but Flex does not like this.
My solution was to create two functions, one for the X close window to call and one for the Cancel button to dispatch a CloseEvent of its own. This seemed to work for me. Hope it helps you.
I understand how to declaratively assign a method to be called when an Image receives a MouseMove event.
<mx:Image
id="oneCent"
mouseMove="dragIt(event, 1);"
/>
How do I do this programmatically in Flex/AS3?
EDIT: Thanks for the comments. Here's what I have so far:
myImage = new Image();
myImage.id = "oneCent";
myImage.addEventListener(MouseEvent.MOUSE_MOVE, dragIt);
The code snippet above assigns the dragIt method to the MOUSE_MOVE event for myImage. So far, so good. How do I pass in the 2nd parameter to the call to dragIt?
You can't pass the second param directly - so add it to myImage:
myImage = new Image();
myImage.id = "oneCent";
myImage.num = 1;
myImage.addEventListener(MouseEvent.MOUSE_MOVE, dragIt);
Then in the dragit function:
function dragIt(event:MouseEvent):void {
trace("PARAM =", event.target.num, event.target.id);
}
Where event.target automatically becomes a reference to the image
oneCent.addEventListener(MouseEvent.MOUSE_MOVE, dragIt);
...
function dragIt(event:MouseEvent):void
{
...
You can't pass extra arguments to event handlers. Behind the scenes, the Flex compiler is generating code that looks something like this:
private function generatedMouseMoveHandler(event:MouseEvent):void
{
dragIt(event, 1);
}
Any event handler created in MXML will be wrapped like that. That's why you can refer to a variable named event.
Scott's got it, although it's even better (and cleaner!) to use an anonymous function:
oneCent.addEventListener(MouseEvent.MOUSE_MOVE, function(e:MouseEvent):void{
...
});
Which is better if you're not gonna use dragIt() later in your code.