I'm trying to work out how to use states in my Flex app.I've created two states, State1 and Stage 2. Both are based off the base state. I've created a few visual elements for State1, and given each of them includeIn="State1".But when I'm in design mode and click on State2, these elements are still visible?If I try to delete them while State2 is selected, all that happens is RemoveChild is added to the State2 tag.
View 1 RepliesIm wondering how to implement undo redo functionality with a TextArea. I already have an undoredo framework functionality working, now I have two questions.When do I start/stop a new undo/redo command, eg when a user hits undo, how far back do I go. How do I implement this(1.) in a normal TextAreay thinking:I thinking that I should create a new undo command, when anything but a alphanumber+space is hit. To do this I would use the keyDown event and test if the key is alpha num if it is not I will reset the command.
View 3 RepliesI know actionscript does not allowed private contstructor at any time and But if i want to write a sinlgleton class in action script So how to implement it in actionscript.
Can anyone provide an sample example of a singleton pattern in actionscript?
I'm looking for suggestions regarding implementing process flow / work flow management in a PureMVC based application. Our Flex application includes a number of processes such as account creation, payment processing, etc. Within our team, there is some discussion of how rigidly we should adhere to the PureMVC model. Within the PureMVC model, it seems reasonable that the current state in the process could be managed in a Proxy. Commands are clearly responsible for processing the actions required of each node and for node transitions. Mediators for managing the UI.
However, I think that there is an important bit still missing here: a ProcessController. The approaches we've reviewed all seem to either violate the PureMVC model (even just slightly) or make unreadable code. A proxy would maintain the state of the process. As such, it seems to be an appropriate way to implement the controller. However, this is putting a lot of business logic into the proxy.
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I'm working in Flex 4.1, and I have a viewstack and tabbar as my main navigation. A user logs into the application and should then only be able to see what tabs are available to his user level.I am trying to stick with MXML as much as possible, since it works well with the framework. But I'm goin numb thinking about this. What are the common practices for doing this?FYI: the user level is slightly to complex for states. There are lots of options, way to many to comfortably do w/ states and state groups.
Chimp is a pretty cool library for those interested. It's a little old and there doesn't seem to be much motivation to expand it past UIComponents. So for my purposes it wont do.Again, what do you do for setting up these systems?PDATE: I had to compromise, but it actually worked out pretty well in the end. Instead of destructively laying on permissions (having everything available at first and removing the elements thereafter), the system now works constructively. Here's a sample:
[Bindable]
public var managePage:ManagePage;
[Bindable]
[code].....
I'm interested in finding out the best approach to this issue, it's not technically difficult but there must be an elegant solution. Basically i have a form that features mostly text inputs, i would like to change the style of the input boxes based on the current state. I can do this in the mxml on each input...
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we have following class
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If you run these, you'll notice that the MXML-component can't hear the event. The question is simple, is there some way of getting the Event-metadata tag to work WITHOUT extending EventDispatcher? I would like to keep this class independent and use object composition as much as possible. And no, I don't want to use ActionScript addEventListener in the MXML-file. It doesn't tell the developer anything like good old Event metadata tag, and besides, that is not the point of this example. :)
I would like to know if there is a way to add states to a button in flex 4 in addition to the default states that are present.
View 1 RepliesAre there any differences implementing Flex application security in a clustered Java environment (such as Oracle Application Server/OC4J or a JBoss cluster) vs a single application server environment? (And/or does it depend on the specific environment software?)
What considerations are there in a situation where you need to authenticate with LDAP (AD) and store user access information in a database (ex. USER table containing username + permissions/roles info)? Any differences between Blaze DS and Granite DS?
I would like to implement the MVC pattern to an existing Flex project.I want to separate out the controllers and models from the views. They currently all live together in large mxml files.My question is, should httpservice requests be in the model or the controller? What sort of advantages/disadvantages would there be to either?
View 3 RepliesI have an application that is coded using Flex 3 on UI side and java @ the service layer, along with BlazeDS. Now we need to authorize the users accessing the system based on the roles that are defined for them in the database, e.g. : say a user with role guest should not be able to access Admin tab on ui and also should not be able to do any operations other than viewing the data displayed on dashboard. Also the point to note here is that roles can be created dynamically by Super users from UI. I came across this link which describes how to perform Role Based Authentication & Authorization. With this approach I need to define the roles in service-config.xml but since my roles are not pre-defined I cannot go with this.
View 1 RepliesI am attempting to implement a layout in Adobe Flex 4.5 / MXML where I have multiple controls in an HBox that - in total - consume all available horizontal screen estate. Some use a relative with (percentage), some an absolute width (pixels) and one is supposed to consume whatever space is still left, such as:
+----------------------+-----------------------+------+
| 35% | fill parent | 10px |
+----------------------+-----------------------+------+
How would I achieve this in Flex (is there something comparable to Android's
layout_width="fillparent")?
Due to the fact that there are elements that have an absolute width I cannot easily calculate the width of the filler as a percentage a priori (as it varies with the screen width). Setting the filler's width to 100% also does not work as this will shrink the 35% area below 35%. Applying the updateDisplayList suggestion from www.Flextras.com's answer below yields the error "Call to a possibly undefined method updateDisplayList" at the line marked in the source excerpt below:
<?xml version="1.0"?>
<mx:HBox xmlns:fx="[URL]"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
creationPolicy="auto"
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I have an app that I am currently using a viewstack to display each page and I am wondering is this the right way to go, or should I use different states (or something else).
The site is powered by a menu bar with the top level items of Home, Tools, Support. Underneath the Tools menu is a submenu with Tool1, Tool2, Tool3. Currently when the user clicks on any of the tools in the Tool submenu I bring up a child container from the viewstack (each child is actually in a separete component).
I have the following panel component called AdvancedPanel with controlBarContent:
<!-- AdvancedPanel.mxml -->
<s:Panel>
<s:states>
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Using the CustomAdvancedPanel inside an application component shows an empty panel with the "Go to edit" button. But when I click it, the "Extra edit button" becomes visible, but the "Show in edit" button inside the controlBar doesn't.
When the CustomAdvancedPanel is empty, without redeclared states and "Extra edit button" the panel works just fine.
I think it is because the State object declared in AdvancedPanel isn't the same as CustomAdvancedPanel, so the state is different, even if they have the same name. However. I can't use the states of AdvancedPanel inside CustomAdvancedPanel without (re)declare them in mxml.
Is there any way to achieve this kind of state-reuse? Or is there a better way to obtain the same result?
I am trying to use global application states to manage roles in my application. How can I use <properties.state> everywhere in my application if I declare it in my top level application?
View 1 RepliesI'm having a crack at making my first Flex mobile application (although I'm not new to Flex), and I've tripped at the first hurdle.
I cannot get ViewNavigatorApplication to display a view when trying to use firstView with states e.g. firstView.phone, firstView.tablet.
I'm just left with a blank action bar and content area.
If I try setting setting firstView with no state (e.g. firstView="view.HomeView") the view loads fine.
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I am creating an interface that has a few different states for the different steps. For those steps, there is data that I am pulling in from a database to fill certain fields. As of right now I am doing one db query to get all of the data back and want to fill in all of the fields at the same time but it is giving me "access to a null object reference".
It seems as though there is a scope issue when you are trying to access a text input field with actionscript when the state that the text input is in, isn't the current state.For Example (This would throw a "Null object reference" error):
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600"
creationComplete="init()">
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I'm developping an mobile program with the Flex 4.5 SDK, this for my thesis for school. I have a bug in my program that I can't fix. I have a view where I have 2 states. When I change from state my program doesn't listen to the backKey event anymore.
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In my flex project i used one option like Link button . If i like it will be open new page contain more information and components . Which container is suitable one ? Where is used viewstack and stages ?
View 2 RepliesI was recently profiling my application that uses Degrafa States in the skins and noticed that doing so uses more memory than I expected. Between the SetProperty and State, they were using about 10% of the total used application memory.
Would it be better to use css for the state changes and a new skin for each state? or Are there some simple tips to reducing the memory footprint of degrafa?
I have a button with the various states (up/over/down etc) that uses a skin file to render the display. I want to achieve animation between the states. For instance, between the change from 'up' to 'over' I want to fade in a color and a border.
The way I am doing this at the moment is to use viewstates and animate between them using transitions and the mx:AnimateProperty. However, using this method I can only animate one property per viewstate. So only the border, or the color can be animated.
Does anyone know how I can achieve multiple animations on multiple properties of a programmatic button skin?
In mxml you declare states like this[code]...
How do you acheive the same in an ActionScript class? Apparently it's the same in Flex 3 and Flex 4, whatever it is.
I am having an issue with flex states in my application. What I am looking to do is on creation complete of the application, obtain a user role guest/user/superUser (based on username and password) from a server, then set the state client side based on that information. My .mxml classes need to include certain graphic elements based on that state. I am running into the issues of including elements based on the states defined at the Application level of the project. I am trying to avoid having to define the states in each .mxml file that needs it.
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Below is a very simple example, randomly, if I click the step2 button the state will change but the Step 2 panel will not be there.
I suspect the children of the state are not getting created for some reason, which is why I set the itemCreationPolicy to "immediate", but it makes no difference This is catastrophic for the application because the user is left in limbo and is forced to refresh
<s:BorderContainer xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx"
creationPolicy="all" currentState="step1">
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State transitions in flex are very helpful. Is it possible to add an automatic state transition between state A and state B in case there is no user response for 5 mins in state A or pop-up an alert?
View 1 RepliesI have several custom components all of which are included in the parent application.When I try to change state from a custom component, I get an error saying "undefined state: state name". How do I change the state of the application from within a custom component ?
View 2 Repliesi'm trying to change components states through a control bar button (id=btn) in main... so i add an event listener to it ... the code goes like this
import flash.events.EventDispatcher;
import flash.events.MouseEvent;
import mx.core.FlexGlobals;
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I have a mobile app where I have 3 states in it. There is the default portrait and landscape and I would to add a third state that includes the other two.
<s:states>
<s:State name="portrait"/>
<s:State name="landscape"/>
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I came across this piece of code and it intrigued me. I haven't seen skinning like this before. I'd like to know if there are any downsides and alternatives to it. For example, is it cpu intensive like addChild calls are?
<s:Button id="loginoutBtn" right="10" top="10" label="Log out" label.loggedout="Log in" skinClass.loggedin="skins.FBLogoutButtonSkin" skinClass.loggedout="skins.FBLoginButtonSkin" click.loggedin="logout()" click.loggedout="login()"/>
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I want to change the view states in my flex app when it resizes in the browser window.I have the swf embedded at 100% x 100%. So when the user resizes the window below a certain width, I want to switch to a different state. I tried adding an event listener like this, but it only fires the event when I resize the swf outside the browser, not inside. I used:
this.addEventListener(ResizeEvent.RESIZE, SizeChanged);
I want this to work within the browser. I even tried using fixed dimensions in the embed code, instead of percentages, but that didn't help either.