I have an item renderer for a list containing an image, label and a checkbox.These are visible depending on the dataProvider property of the list.E.g if an image is a premium image then display the premium label, if an image is a favourite then display a star etc.The problem is i have a massive if statement, and this doesn't seem good practice.
View 1 RepliesHow can I use multiple item renderers in mx:Tree depending on item's depth/level in tree?For example. For the first level items I want to use label with button and for second level items combobox
View 2 RepliesI have an item renderer that checks an external source for display information. If that information changes, I want to force all item renderer instances to check it.
What's the best way for force all the item renderers in a list or grid to either commitProperties or execute some other method?
I've read that resetting the grid.itemRenderer property will make them all initialize. I've also received the suggestion to iterate recursively through all the grid's children and call invalidateProperties on all the UIComponents I find.
Can i use creation complete in item renderers, i have a data grid and i have kept every single cell as an item renderer. is it a good practice to use creation complete here. I fear events might fire up at wrong instances.
View 2 RepliesI've got a client who has a list of items on a Datagrid. When the row is clicked, it sends the user to another page with details of that item. The client wants the rows to act like HTML links, where the color is purple when the link has been previously visited and its normal color if the row hasn't been clicked in the past. I've accomplished this with item renderers and SharedObjects. The application loads the visited ids into an array on start and the item renderer colors the individual cells if that row had been visited.
The issue here is that the client also wants the text color in the rows to turn white when the user rolls over the row. Because the item renderer sets the color, it doesn't respond to the default stylesheet for the datagrid. I can make it turn white on rollover of an individual cell, but we need the whole row to do it. Is there a way to trigger a function in all the item renderers in the row, or is there a better way to accomplish this?
I have data ItemRenderers with DataGroup, but I have many items, and it seems to me that DataGroup create all of them not only those few displayed on users screen, which takes time and resources.
View 1 RepliesI'm trying to have multiple item renderers in a list, as I have several different types of objects that I want to display. I tried creating a new class that extends ListBase, and adding override public function createItemRenderer with my code within this function. I then instantiate the new class and give it my array of data as its dataProvider, but createItemRenderer is never called within my new class,
View 2 Replieswhile creating custom item renderers which interfaces we need to implement?
View 2 RepliesI have a List component using multiple item renderers determined by the itemRendererFunction. When I set the data the first time, it works as expected. Then, when I set the data a second time with new data, it doesn't call the itemRendererFunction and tries to reuse the current renderers even though they don't match the data.Once I scroll, the function is called and the correct renderers are used. I tried calling invalidateDisplayList and such prior to setting the data, but that didn't fix the problem.
View 3 RepliesYou can hook into the creation of Flex 4 item renderers easily enough (through itemRenderer, or itemRendererFunction) allowing you to pull renderers from a custom object pool, but how would you put those renderers back into the pool?
I understand that layout virtualization does a form of object pooling, but I'd like a way to hook in to that. For example, when an itemRendererFunction has been assigned to a data group with a virtualized layout, item renderer construction is indeed deferred, but the instances are not re-used - I'd like to be able to intervene there, if possible.
But even in the case of normal virtualized renderers (where the instances are re-cycled) it would still be useful to be able to manage the pool manually. Pools could be shared between data groups, for example, to reduce the initial buffer required to populate each group.
Is there any way to know when Flex discards an item renderer instance? I have a sinking feeling that there is just no reliable way to tell - even though perhaps there should be.
I have a view component called viewBase where I defined a advanced datagrid with few item renderers for datagrid columns. Now I have a requirement where I need to use the same view viewBase component, but not required to use any item renderers.
how to override the itemrenderers which are declared in a view component?
I have a custom item renderer which displays a different gif in the row depending on data value from the data object. When i set the image source url using the absolute path and not embedding it works fine however when i embed the images i find that when i scroll up and down the grid the images get messed up and sometimes sit on top of each other. why embedding images in my hbox item renderer is causing so hassle;
code
public var equipment:Image;
public var compr_icons:Bitmap = new AssetManager.COMPUTER_ICON;
.. do some logic
equipment.addChild(compr_icons);
I have a list with time related data. the item renderers display this time. I would like to make the item renderers refresh their state/labels upon the tick of a timer.
to which event should I add a listener within the renderer, and how do I trigger such event from the list?
This is a snippet of code in our custom item renderer which is in actionscript:
textCustomItemRendererTempForTab.tabEnabled=true;
textCustomItemRendererTempForTab.focusEnabled=true;
textCustomItemRendererTempForTab.setFocus();
Alert.show( "Without this alert focus goes to next grid " );
keyboardEvent.preventDefault();
keyboardEvent.stopImmediatePropagation();
keyboardEvent.stopPropagation();
Right now tab navigation works (on tab, focus goes to next editable cell) with the alert inserted in the code but I'm not sure why because I believe the alert in the code breaks the flow of event bubbling. However without the alert (which is what we are going for) the focus goes to the next grid in our UI.
You can see the attempts of trying to stop the event from going to other components. I have also tried to call preventDefault() and stopPropagation() on the datagrid when it receives a tab key event.
how to allow proper tab key navigation without an alert?
I am using the following to move one item to a certain place once the first item has reached there:
[AS]
if (mc_skip._y - 1 < 20 && mc_skip._y + 1 > 20) {
mc_skip._y = 20;
mc_skip_b._y = 20;
//the movieclip is within 1 point of where you want it
} this.onEnterFrame = function(){
trace("Button:" + mc_skip_b._y);
trace("Text:" + mc_skip._y);
}
[/AS]
Why does the mc_skip_b not move to 20 _y? I am tracing it, and it's definitely going to 20 _y so I don't get it?
I have an item renderer for a grid that has a fairly basic updateDisplayList function:
override protected function updateDisplayList( w : Number, h : Number ) : void
{
super.updateDisplayList( w, h );
var labelWidth : Number = Math.min( _labelDisplay.measuredWidth, w );
[Code]....
The next time I scroll the renders update to look like they should - but updateDisplayList is NOT called here (on the renderes). All that happens is that the renderers are re-positioned in the grid. Both the background and the label are displayed incorrectly initially so it's not just the label mis-behaving.
I have created a custom multiline item renderer for mx:Tree component. Important to mention that my item renderer has two UITextFields in it. Sometimes (depends of the input data) only one of UITextFields must be shown, so when second UITextField is not needed I hide it and recalculate the height of my item renderer. According to my tests height is calculated properly.The problem occures when I do scroll of my tree. The error text is:
TypeError: Error #1010: A term is undefined and has no properties.
at mx.controls::List/adjustVerticalScrollPositionDownward()[E:dev4.0.0frameworksprojectsframeworksrcmxcontrolsList.as:1042]
[code].....
I have a data group that displays profile picture of people on facebook.Im also pulling their status but I do that inside the item renderer [code]Now what happens is that the statuses are mixed up.Only few people are really shown their true status and the others get other people status.Im guessing thats because Flash builder executes the code before i get a call back from Facebook server, and thats why statuses arent synchronized.Is there a solution for this problem? like stopping the item renderer from processing before he get all data?Iunderstand i can pull the data in the Main program, but im asking if theres a way to do that inside the item renderer for future uses 10x for your answer, but im still experiencing the same problem when using class. because theres is no way of knowing when ill get the call back from the Facebook server. The problem with facebook api for flash is that you get the info in a diffrent function from the one your send the call.[code0so what happens is that i need to return the info from the function profilepic, but i have no idea if it already got the data.
View 1 RepliesI have this datagrid:
<mx:DataGrid id="dgCompetenteN" includeIn="Test" left="10" right="472" top="69" bottom="149"
dataProvider="{colCompetente}" editable="false">
<mx:columns>
[Code]....
What I want to do is, when I select an item in the datagrid, the selected item of the dropdown should be the correct one (the one which has the field idCompSuperioara equal to the third element in the selected datagrid row).
I'm creating a mobile app in which I need to show a calendar with months at the top. The months are part of a component that extends from SkinnableDataContainer (and has some custom scrolling/behaviour - which is why I did'nt use a spark list). I need the months to be shown as a 'trapezium' shaped tab and so I'm using a png image as a mask in the item renderer for the component.
When the mask is not applied, it all works well - the months render, the list/data container selection works when I click on a month and so on.When the mask is applied, it renders well, scrolling and everything else seems to work well - but when I click on a month, nothing happens visually. And from the trace statements in my code, it appears list item selection is not changing. Looks like mouse clicks are not working.
Code:
public class TopCalendarMonthRenderer extends LabelItemRenderer {
[Embed(source="/assets/trapezium_alpha.png")]
private static var TrapeziumMask:Class;
private static var trapeziumMaskInstance:BitmapAsset;
[code]...
<mx:itemRenderer>
<mx:Component>
<mx:Canvas>
[code]......
I have used states in my application.The thing is I have made the first item in my list to be selected. so I gave like this,
if(itemIndex == 0)
this.currentState="selected";
this works fine.The problem is when other item is selected the first item does not change its state,it remains in the selected state until its clicked.My code looks like this,
<s:BorderContainer id="outerCont" width="275" height="100" borderVisible="false"
backgroundColor.normal="#3D3C3C" backgroundAlpha.selected="0.1"
backgroundColor.selected="{data.color}">
My states are like this,
<s:states>
<s:State name="normal" />
<s:State name="hovered" />[code]........
Is it possible to trigger Flex Piechart Item click event when a Datagrid Item is clicked.If so can anyone give some example.
View 3 RepliesIt seems it isn't possible at runtime to change styling defined in CSS files, ex.: colors. This is seemingly because the CSS files are compiled into SWF. Is it possible to externalize styling information in CSS (or any other format) without compiling it to SWF file so that it can be changed easily at runtime just as normal CSS can be changed when it is used in HTML.
View 3 RepliesIn AIR on Mac, when I send login creds to a service and they're incorrect, AIR displays a native popup window to try logging in again without dispatching an error event. Twitter provides a header (suppress_response_codes=true), which returns any error as a status 200 with the error message. I'm using HTTPService to connect to a service without a header like this. Are there any properties or headers I can send to avoid this popup?
View 3 RepliesI'm having this problem of adding an image to the textArea in RichTextEditor (RTE) on the fly and this image seems to "reset" the html properties of the textArea.
Better explained:
The user starts writing something in the TextArea (with Verdana in size:12 font settings). When he adds an image to the text area, the cursor right after the image gets very small and the font settings are reset to HUM777B in size:2.
How could I avoid this behavior?
It seems Flex adds additional HTML code before the image tag. If there was any way to avoid this I would be able to add my own settings to the tags.
I have a custom viewstack that applies automatically a slide in/slide out effect when the view changes. Everything goes smoothly when the views are lightweight but becomes jumpy when the next view requires heavy rendering. Here are the relevant parts of the code :
[Code]...
if container like VBox have autoScrollPolicy for both scrolls. if VerticalScrollBar is added, why the horizontalScrollBar automatically added.. is there any option to avoid the horizontalScrollBar addition to container.. without using horizontalScrollPolicy="off"
View 1 RepliesI am returning 12345678910111213171819 from java to flex, with in xml tags using http service. The result format is object.
but when I display the text it automatically converted or treated as number so it displays like 1.234567891011121317181 x e^21 .[code]...
I have function init, which runs on the creationComplete of the application. The init calls get_login_share_object funtion, in which objects are created, which are null.
Now my problem is that, I get a null object reference error on the Alert in "init()". How can I avoid that. Is it possible that I can have a check to see, if the objects are null the program should just skip reading the objects.
private function init():void
{
var stored_credentials:Object = get_login_share_object();
[Code]....