Flex :: Removing Default Styling From (spark) ItemRenderer?
Sep 19, 2011
I'm trying to make a horizontal list of labels with a space in-between them (for use as part of a ticker tape).Labels outside of a list have a transparent background but as part of either the ItemRenderer or List, they get a white background. My assumption is that this is part of the default styling applied to a Spark ItemRenderer.Question - Is there any way to totally get rid of all default visual stylings applied to an ItemRenderer?
protected var messages:ArrayCollection = new ArrayCollection( new Array("1", "2", "3", "etc") );
<s:List dataProvider="{messages}" itemRenderer="SimpleTextRenderer">
<s:layout >[code].....
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Mar 1, 2011
i have a spark list component and a corresponding custom itemrenderer:
list component:
<s:List id="albumImagesList" itemRenderer="the.namespace.for.XYZImageRenderer" useVirtualLayout="false" width="400" height="160">
<s:layout>
<s:TileLayout requestedColumnCount="5"
[Code].....
it's all fine and dandy, the data gets populated correctly and i verified that the data.image_path property arrives safe and sound inside the itemrenderer.
my only problem is: the image is not displaying. i am not sure if it doesn't render at all or if it's just not visible somehow.
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Oct 26, 2010
In Flex I can create an ItemRenderer to represent each item in the Lists DataProvider but how do I access the instance of the ItemRenderer via the DataProviders Object? Something like myList.getItemRenderer(dp.getItemAt(10));
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Nov 14, 2010
have been working on an air app for quite some time and in one of my mx:lists i have a custom renderer written in pure AS (no mxml). it extends the listitemrenderer mx componenet. in it i have overrode the createChildren() function to add some children of my own.
now, fort right-to-left text i want in this itemrenderer, i would like to add a spark:TextArea component in this createChildren() function
is there a way to do so?
this is the itemRenderer:
import flash.text.TextField;
import mx.controls.listClasses.ListItemRenderer;
[Code].....
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Apr 25, 2011
I need to create a slideshow using data received from another view.I'm calling the slideshow's view like this:
<s:List id = "list" dataProvider = "{actions}"
change = "navigator.pushView (DetailsProduct, list.selectedItem) ">
<s:itemRenderer>
[code].....
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Dec 29, 2010
I am using a spark list control with an itemrenderer. Whenever I set an itemrenderer's currentState, the moment I mouse out of the itemrenderer, it gets reset to its default state. How can I make an itemrenderer keep its currentState unless I explicitly tell it to change?
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Jan 17, 2011
I'm writing a s:ItemRenderer to render some simple graphical components in my app. Each element can have multiple shapes that can be selected by the user, i.e. a certain element can be a square, or a circle, or a star, or whatever else.The simplest way I could think for doing this was to include all possible shapes in a s:Group and then manage their visible tag depending on what shape the user has selected. Is there a better way to do that? Also, if I encapsulate the group in a separate MXML component, how do I propagate the state of the itemRenderer (say "hovered") down to the MXML component that manages the shapes?Let's say you want to display three types of objects alternatively - the IR below with an AS snippet that turns visible to false for 2 out of the 3 objects definitely does the trick, but seems so ugly to me. In the mean time I found setCurrentState (stateName: String, playTransition:Boolean=true) to propagate the state down, so that's solved.[code]
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Feb 9, 2011
I am having an issue with my ItemRenderer, which I am using for a spark List. My code is the following:
I have this list:
<s:List
id="productSetList"
dataProvider="{ model.productSets }"
[Code]....
The thing is, if I scroll the list, and click on an item, it does not trace 'arthur' ! Why is this so ? I must trace that all the time that someone clicks in the list!
EDIT: If I remove change="model.selectSet( productSetList )" in the list, it works!! but I cannot remove that, some suggestions ? How can I switch that to another function?
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May 4, 2011
Objective:I would like to pass Skins to an itemRenderer (which is a Button) of a List, and be able to skin every button in that List.This is what I have:
List:
<s:List itemRenderer="renderers.ItemRenderer" dataProvider="{collectionWorkspace}" />
ArrayCollection:
<s:ArrayCollection id="collectionWorkspace">
<comp:Layout1 />[code]...
I get an error (fixed for clarification):Error: Skin for Application....Button1 cannot be found.
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Mar 22, 2011
I've made a custom list itemRenderer with 2 buttons and a label. One button deletes the list entry (and thats not the problem) the second button would change the actual view.how I can change actual view within the itemrenderer ?
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Apr 14, 2011
I have an application with a Google Map, an Area Chart, and an accordion containing a list.When the selection in the list is changed, the application fetches data from the server and updates the chart and map, repositioning the map to contain all markers within its viewport and kicking off a SeriesEffect to animate the chart data redraw.When a user changes selections and continues to mouse over the items in the list while the map and chart are redrawing, the labels on the item renderers disappear.The item renderer code is the following:
<s:ItemRenderer xmlns:fx = "http://ns.adobe.com/mxml/2009"
xmlns:s = "library://ns.adobe.com/flex/spark"
xmlns:mx = "library://ns.adobe.com/flex/mx"
[code]....
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Apr 26, 2011
I would like my spark ItemRenderer to be able to render a varying number of graphical objects that depends on the user input. As an example, let's say that I want to render a set of ellipses on a line.I've been using MXML for my most recent batch of ItemRenderers and have loved every minute of it, but I'm not sure how to accomplish the above goal with an MXML IR. In Actionscript I can acquire the list of ellipses locations and draw them programmatically in the updateDisplayList method. Is there an equivalent in MXML?
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Feb 27, 2012
I've got a DataGrid in my mobile application (I know, I know but there's currently not other solution for this), that numeric values. Depending on the value of a cell, the text gets colored. My big issue is that this doesn't work very for more than about 5 rows of data. I reckon the issue is that the set text function (in which I format the color) can't keep up with the amount of cell changes and formats the text based on the last updated cell of the row.I thought about a column item renderer so that the renderer only gets the value for that column, and not the whole data of the row.
Just for reference, this is my current item renderer (again, this works fine for few rows, for 5+ of fast changing data, this doesn't work any more, cells get formatted even though their data hasn't changed).[code]I just double-checked and have to revert my previous statement. A single row works fine, the second row already messes up the color formatting though. It seems as if the datagrid somehow throws together the values.
Doing the color formatting in the set data method shows the exact same effect;[code]My assumption about the grid messing up the ItemRenderer's data seems to be correct.A simple trace in the set data method (trace("old: " + _oldVal + "new : " + value[column.dataField]);) revealed that somehow, values of the next grid row (in case there are 2) get used as well as _oldVal gets the old value of the next row.
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Sep 1, 2011
I have a main application that contains a list, using a custom itemRenderer to display data.
I would like to be able to call a function, inside the itemRenderer, from the main application.
When running the app, we have a list with three persons, and a button. I want to call the function myItemRendererFunction() inside the itemRenderer, of the selected item in the list, all this, from the main app.
[Code]...
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Jul 5, 2011
I want my list control has its content height as I don't want scroll bars. For the scrolling purpose I have my own scroller in parent container.
Now, The problem is when list control exceeds the maxHeight 10000, then it will start clipping remaining data. I think the solution is increase the maxheight.
how I can set maxheight more than 10000.
For Example..
</s:Scroller width="100%" height="100%">
</s:VGroup>
<s:List id="myList" dataProvider="arrData" useVirtualLayout="false" />
</s:VGroup>
</s:Scroller>
In this case assume that I have arrData.length = 9999999, and for that mylist's height will become 10000+ (Lets assume 15000). now mylist will clipped after 10000px height or list's vertical scrollbar will visible and as I adready have scroller of my own It will have two scrollbars at that particular time.
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Sep 29, 2011
How to create horizontal layout container like HGroup but with border and border radius?In this example there is some default height:
<s:BorderContainer width="100%" borderWeight="2" cornerRadius="5">
<s:layout>
<s:HorizontalLayout/>
[code]....
I want it to have height of the heighest element in container. Like in HGroup. Add: Why is height for above example BorderContainer equal to 112 ?
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Jun 20, 2010
I'm trying to copy/modify the spark skin for the default button, but not sure how to find that skin. When I hover over <s:Button and Ctrl + Click it, it takes me to the Button class, but there isn't any skin information there.
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Sep 8, 2011
I have a spark DataGrid component with several columns and I want to have my application default to descending order on the first column in the DataGrid. I would like to use the built-in default sort that occurs when clicking the top header once. I have no need to sort the ArrayCollection I'm working with or change what the comparators are.I also want any user-generated sorting such as clicking on a different column's header to override the default sorting.
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Dec 11, 2011
In the Spark DataGrid the default row height is about 22 px. I would like to set the default row height to 18 pixels and I can do this easily enough with the rowHeight property but what happens is when the rowHeight is set to anything less than 22 px the bottom area of the text in each row is cut off. It seems that the default grid itemrenderer or grid label has a min height set to it. Since I have multiple columns and want to have shorter rows but not have the bottom of the text cut off in each row how would I do this?
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Mar 3, 2011
I'm trying to prevent a default chart item roll over highlight in a Spark column chart.If you look at any of the chart examples on this page , when you roll over any of the chart series items, they turn a darkened shade of their original colour. This is what I want to prevent.
So far I have had no luck with using the itemRollOverColor property, as this only allows you to set it to one specific colour for the whole chart (my app has several different coloured series on the chart at once). Also, trying to leverage the itemRollOver event (with preventDefault() etc) hasn't worked either.
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May 3, 2011
I am trying to create a generic List, where I can pass the layout & item renderer as parameters.Since it is not possible to pass parameters to a MXML component's Constructor, I figured I should create my List in Actionscript.
[Code]...
I would prefer to have the List in MXML (because It will be easier using states later), but If I am forced to use pure Actionscript so I can instantiate it and pass in parameters, any help would go a long way.
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Jan 16, 2012
I am trying to use the same custom renderer for all the columns in a spark DataGrid. I need to know the dataField or columnIndex based on which I can change state in my custom itemrenderer.
Earlier in mx:DataGrid, this can be achieved by extending the MXDataGridItemRenderer which implements IDropInListItemRenderer and hence dataGridListData property is available.
But using the spark DataGrid, I am extending the GridItemRenderer which DOES NOT implement the IDropInListItemRenderer and hence unable to access dataGridListData property. I have tried to write an action script class extending GridItemRenderer and implementing dataGridListData but flex throws an error in the set function of this variable.
// Sample itemRenderer used for mx:DataGrid [Working Code]
<fx:Script>
<![CDATA[
import mx.events.FlexEvent;
[Code]....
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Jun 29, 2011
In a flex project that I have that is designed to scale 100% to the web window, I have a spark list. And I have a simple itemrenderer that takes the data and displays a name, and a message. Just think of it like a simple instant messenger display. The problem is that for my msg_txt label I want to give it a width thats the width of the parent list thats holding it.I tried turning the horizontalScrollPolicy to off, also tried width="this.parent.parent.width}" (as well as this.parent.width) for the spark label inside the item renderer. and in the label i tried some things like left="0" right="0" maxWidth="{this.width}" but nothing really does the trick.How can I make this label have a max width of the list thats holding it, AND make sure it resizes if the size of the browser changes and the list size changes?heres the list:
<s:List id="chat_content" width="100%" height="100%"
alternatingItemColors="[#EEEEEE,#E6E6E6]" contentBackgroundColor="#EEEEEE"
horizontalScrollPolicy="off" itemRenderer="renderers.ActiveChatItemRenderer">
[code].....
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Oct 6, 2010
I have a spark.components.List component on which I would like the vertival scroll to be visible by default.
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Jul 1, 2011
I have a renderer that looks like this:
[Code]...
Loading thumbnails using this method works perfectly. The issue happens when you scroll the List.
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Feb 7, 2011
I'm looking to add a couple of buttons to the title bar of a Spark Panel or Spark TitleWindow. Is this possible to do without making the panel from scratch?
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May 16, 2011
I'm trying to change the font color of a row in a datagrid if a certain word is found in a datafield. Is there a simple, inline way to do this?
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Jul 18, 2010
I have a dataGrid component in flex. My grid has few rows. I simply want to make the last row bold. I just can't figure how to do it.
I thought about an idea : create a factory that gets parameters so that i can pass the itemRenderer the total count of rows. But, i don't know how to check the current row in the itemRenderer itself (and compare it to the total rows).
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May 22, 2010
I created a TabNavigator with a bunch of NavigatorContent inside it, and want to skin just the buttons of the tabs themselves. So I added a skinClass, but looks like in the documentation, there's no skin part to target the button specifically.
Do I have to style the mx:TabNavigator itself to accomplish this? I was hoping not since I don't know how to style mx components and am more comfortable with styling spark.
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Oct 29, 2010
Adobe's docs describe how to apply an outline to the pie chart by using the mx:stroke element within a PieSeries, however this only changes the border of the entire chart.
How do I add a border around each of the wedges in the chart?
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