Symbol of the triangle in data binding

Similar Questions

• Data binding

  Under what circumstances the following does not trigger the events of data binding:

  < ns:Button id = "btn1" enabled = "{cnt1.selectedIndex > = 0}" / >

  CNT1 is based on that:

  package

  {

  [Bindable]

  SerializableAttribute public class DataGridContainer extends DataGridContainerBase

  {

  public function get () of the grid: DataGridBase

  {

  return _grid.

  }

  public function get selectedIndex (): int

  {

  trace (_grid. SelectedIndex);

  Returns - 1;

  Return _grid.selectedIndex;

  }

  override protected function createGrid (): DataGridBase

  {

  super.createGrid ();

  }

  }

  }

  Thank you

  Probably still.  It seems that selectedIndex cannot change?

• Data binding for Idiots (myself)

  Hey everybody,

  I was asked to create a form that is much more complex than anything I've done in the past. I just wanted to ask a few questions to the experts here before I'm begins, to make sure that I don't make any huge mistakes.

  The complexity of the form lies in the multiplicity of repetitive nested subforms, the fact that it is three forms (which projected form depends on a selection in a drop-down list), and the fact that the form must be designed to export its data such as xml.

  The extent of the building, the form will, I'm comfortable with everything except for export in XML format. I've done a few times, but I'm not sure that the assumptions I made are correct. I tried to read the help files, but I'm not sure I want to come.

  Roughly, I use a ton of subforms to ensure that the layout of the form works dynamically. I don't want all these subforms is displayed in the xml import. The way I do it is to affect the data binding on the subforms "No data binding." Does have an impact on the way that data is stored in the form? If I don't want the value of a field to export, I can put it is linked to "no data binding", or this issue will prevent the values being recorded?

  My last question concerns the link "Use name". So far, in forms I made so that all fields have different names. This form is so large and has so many similar elements, it would be useful to resue field names in different areas of the form. For example, two versions of the forms has a section for the associated addresses. The fields in these sections are the same. I can name them the same thing, as long as they are in different subforms? Or it will cause a conflict when the export/backup.

  Sorry for the long post. In short:

  (1) what the "no data binding" binding afftect data have on subforms and fields, regarding the data saved and exported data? Is there any 'traps!"that I should be aware of?

  (2) what are the guidelines I should follow to make sure that I do not come across all naming conflicts? I just need brother fields are not named the same, or all names are separate?

  I'd appreciate any help that you guys might be able to offer.

  -Scott

  Scott,

  (1) no mandatory date refers to a form object is not included in the exported XML file. Data binding has no effect during the recording of data when you save a form, the form contains the data.

  (2) for me, the #1 rule is use a schema and a schema binding. It is worth the initial investment in time. What you see in the diagram, this is what you see in the output data, given the form object is bound to the schema. You can link an element of single to multiple form objects schema if you need to re - use data through forms, too. Rule #2, for me, is to explicitly set the names sub-shape to simplify the schema binding and to avoid name collisions.

  I have attached a very simple form (with the built-in schema), schema, and the exported xml file to show.

  Steve

• Data binding does not detect changes

  During the passage of property that may be related to the function and assigning a new object data binding breaks
  Take a look at the following example.
  
  <? XML version = "1.0" encoding = "utf-8"? >
  "" < mx:Application xmlns:mx = ' http://www.adobe.com/2006/mxml ' layout = "absolute" initialize = "init ()" >
  
  < mx:VBox >
  < mx:Text id = text = "{user.name"textbox"}" / > "
  < mx:Button label = "Update user" click = "updateUser (user)" / > "
  < mx:Button label = "Update User2" click = "updateUser2 ()" / > "
  < / mx:VBox >
  < mx:Script >
  <! [CDATA]
  [Bindable]
  private var: user;
  
  private function init (): void
  {
  User = new User();
  User.Name = "first name";
  }
  
  private void updateUser(newUser:User):void
  {
  newUser = new User();
  newUser.name = 'new name ';
  }
  private function updateUser2 (): void
  {
  User = new User();
  User.Name = "new Name2";
  }
  []] >
  < / mx:Script >
  < / mx:Application >
  
  File User.as
  package
  {
  [Bindable]
  public class User
  {
  public var name: String;
  }
  }
  
  Why the function updateUser break data binding?
  The updateUser2 function works

  Thanks for all replies ;)

  Suggestion of levancho on sends an event seems good to me.

  This could look like this:

  var userEvent:UserEvent = new UserEvent ("new user", newUser);
  dispatchEvent (userEvent);

  Where UserEvent is an event with the new object.
  Then all the elements that need this change pourraient, follow these steps:

  addEventListener ("new user", userChanged);

  private void userChanged(evt:UserEvent):void
  {
  evt. User; Update the link with the new user...
  }

  After looking more on the problem, I found:
  Initially, the main problem was that the variable in the function will not update the refence sent in the function when you create a new instance, regardless of the use of data binding or not...

• How to use the data binding on a cluster?

  Hello

  I just discovered the data binding and used it on some primitive controls/indicators. I love the cleanliness of the approach (no additional querying and son required!)

  Now, this page gives to think I can link a cluster with a shared too variable. However, when I right click-> properties, I see that the tabs appearance and Documentation (and I know that I did not accidentally choose an element inside the cluster, because (1) there is a typedef strict, and said the title of (2) 'The Cluster Properties' dialog box). Where can I find the data binding tab?

  Thank you

  Hi JKSH,

  What you're doing is possible if you make the file .ctl as the definition of type rather than a strict definition of type. With a strict definition of type all instances of the same .ctl file link that is why you cannot use data binding.

• Problems with the removal of the data binding Flex to use Air 14

  Hello

  I was wondering if anyone had an optimal solution to replace the Flex Air 14 data binding classes. I can't merge the Flex and Air SDKS more for all liaison managers need to be replaced. Everybody runs into this problem yet? Automated link generation and manipulation was the best feature of Flex and now that it's broken it creates huge problems for me.

  It is Air of mobile and desktop applications. They still build everything simply no work of event management.

  See you soon,.

  Pete

  I forgot that I myself have solved last Dec. So basically from what I can tell that the precompiler is either no [Bindable] conversions so you must manually create the getters and setters for your model when it changes. I hope this helps anyone who may run into the same problem. There is literally no documentation on this wheres.

  i.e.

  [Bindable]

  public var username: String;

  becomes

  private var _username: String;

  [Bindable (= "propertyChange" event)]

  public function get username (): String

  {

  return this ._serviceState;

  }

  public function set username(value:String):void

  {

  var oldValue:Object = this ._username;

  If (oldValue! == value)

  {

  This ._username = value;

  If (this.hasEventListener ("propertyChange"))

  this.dispatchEvent (mx.events.PropertyChangeEvent.createUpdateEvent (Thi, "username", oldValue, value));

  }

  }

  You must also make sure that what ever class contains this property implements IEventDispatcher and has the following functions:

  	//	Implementation of IEventDispatcher
  	//
  	private var _bindingEventDispatcher:flash.events.EventDispatcher =.
  		new flash.events.EventDispatcher (flash.events.IEventDispatcher (this));
  	/**
  	* @inheritDoc
  	*/
  	public function addEventListener (type: String, listener: Function,)
  									useCapture:Boolean = false,
  									priority: int = 0,.
  									weakRef:Boolean = false): void
  	{
  		_bindingEventDispatcher.addEventListener (type, listener, useCapture,
  			priority, weakRef);
  	}
  	/**
  	* @inheritDoc
  	*/
  	public function dispatchEvent (event:flash.events.Event): Boolean
  	{
  		Return _bindingEventDispatcher.dispatchEvent (event);
  	}
  	/**
  	* @inheritDoc
  	*/
  	public void hasEventListener(type:String):Boolean
  	{
  		Return _bindingEventDispatcher.hasEventListener (type);
  	}
  	/**
  	* @inheritDoc
  	*/
  	public void removeEventListener (type: String,)
  										Listener: Function,
  										useCapture:Boolean = false): void
  	{
  		_bindingEventDispatcher.removeEventListener (type, listener, useCapture);
  	}
  	/**
  	* @inheritDoc
  	*/
  	public void willTrigger(type:String):Boolean
  	{
  		Return _bindingEventDispatcher.willTrigger (type);
  	}

• Is it possible to access control with data binding to the page

  Hello
  
  I want to know if we can access the datacontrol operations in the bean with managed to link these operations to the definition of the page.
  
  For example: I have a method in the application Module that is under the control of data and create an impression of the page with link of this operation to the definition of the page.
  I created a button on the page and when you click on the button it calls a method in the managed bean.
  Can I run the operation in the data from the managed bean code control? Can I handle for the data from the managed bean code control?
  
  Please let me know if this can be done or not.
  
  Thank you
  Stephanie

  Why you don't want to use binding for this? Is there a specific reason for it, or you want to just make life harder?
  You could write a managed bean that has a method that creates and instance of AOS and calls the method - and then just call managed method from your page bean.
  Something like this:
  http://download.Oracle.com/docs/CD/E17904_01/Web.1111/b31974/bcservices.htm#CHDIBHBD

• "Data binding will be not able to detect the transfer..." "while [bindable] is set.

  Hello world

  Thank you for taking some time to try to help me.

  I get the warning "data binding will not be able to detect the assignment... "for a

  Collection ArrayCollection all [bindable] properties are set correctly - at least I think... ;-)

  [bindable]
  private var allParties:ArrayCollection = new ArrayCollection();
  

  and then, later:

                 <s:DropDownList id="dropDownList_party_sprecher1"
                                                          [...]
                                     labelField="_internal_partyname">
                      <s:AsyncListView list="{allParties}"/>
                 </s:DropDownList>
  

  The elements of the array collections are a custom class to the mine, which has been automatically

  generated by the php flash builder Gizmo service. This class is also marked as [bindable]:

  [Bindable]
  public class Parties extends _Super_Parties
  {
       [...]
  }
  

  and the extended with class

  [Managed]
  [ExcludeClass]
  public class _Super_Parties extends flash.events.EventDispatcher implements com.adobe.fiber.valueobjects.IValueObject
  {
  [...]
  
       [Bindable(event="propertyChange")] 
      public function get idx() : int    
      {
              return _internal_idx;
      }    
       [Bindable(event="propertyChange")]
      public function get partyname() : String    
      {
              return _internal_partyname;
      }  
  [...]
  }
  
  As I understand it, the [Managed] makes the whole class 
  [bindable] as well and the getters are marked too.
  I've put the [bindable] keyword anywhere I could imagine 
  but it doesn't help at all.
  In principle I wouldn't mind the warning, but the 
  dropdown-list doesn't work.
  
  Please let me know if you need any more information,
  
  Thanks
  
  
  
  

  Try not to allParties

• About the data binding object

  I've set up a Repeater to display XML data. A single field, called rsvpStatus, is a Boolean value, returning as Y or N. I'd rather see something like YES or no. so I thought I could put in place the following text box:
  
  < mx:Text text="{Constants.yesNoTranslator[data.rsvpStatus]}"/ >
  
  and also to set up an associative array reflecting O/N YES/no such as:
  
  [Bindable]
  public static var yesNoTranslator:Object = {N: 'No', Y: 'Yes'};
  
  I'm being warned by Flex Builder that:
  "Data binding will not be able to detect changes when using square brackets operator. For array, use ArrayCollection.getItemAt (). »
  
  Despite this warning, it seems to work.
  
  My question is:
  I've set up with this warning and assume it is useless, or is there a good reason to change the structure of my code?
  
  See you soon
  Craig

  Thanks good for this Sreenivas I'm much clearer about all this now.
  all this got me thinking - it would make sense to create a new class, say "ObjectCollection' ObjectProxy extension with a"getItemAt"method to facilitate the fixation on objects in situations such as these:
  (my apologies but no button code to join for some strange reason)

  
  http://www.Adobe.com/2006/mxml">
  
  
  [Bindable]
  public var yesNoTranslator:ObjectCollection = new ObjectCollection({Y:"Yes",N:"No"});)
  [Bindable]
  public var rsvpStatus:String = 'Y ';
  ]]>
  
  

  package
  {
  Import mx.utils.ObjectProxy;

  SerializableAttribute public class ObjectCollection extends ObjectProxy
  {
  public void ObjectCollection (point: Object = null, uid:String = null, proxyDepth:int = - 1).
  {
  Super (item, uid, proxyDepth);
  }
  [Bindable (= "propertyChange" event)]
  public void getItemAt(index:String):Object {}
  Return (this [index]);
  }
  }
  }

• Using the data binding on each button in a ToggleButtonBar

  Can someone tell me if it is possible to use the data binding on the individual buttons in a ToggleButtonBar and, if so, how?
  
  I want to be able to use the data binding for each individual button in the ToggleButtonBar 'enabled' property, but is not possible using MXML because the ToggleButtonBar takes a data provider to display labels for each button and, obviously, I can't set the "enabled" on the values of dataprovider property because they are not objects Button. For example, I'm not allowed to do something like this:
  
  < mx:ToggleButtonBar id = "tbb".
  toggleOnClick = 'true '.
  itemClick = "clickHandler (event)."
  creationComplete = "tbb.selectedIndex = 1" >
  
  < mx:Button label = "A" active = "{...}" / >
  < mx:Button label = "B" enabled = "{...}" / >
  < mx:Button label = "C" enabled = "{...}" / >
  
  < / mx:ToggleButtonBar >

  Ah! The ToggleButtonBar. Liaison. MXML. mysterious. Not obvious. But yes, we CAN do...
  First, you will need to get the buttons to toggle. Did you know that they are actually ButtonBarButtons? Once you get an instance of each of them, you can do the binding in MXML.

  Each button LINK below the ViewStack is bound to a ToggleBarButton.
  When you click a related button below, the LINK button above it will have its enabled enabled/disabled property. Then a link fires, setting the enabled property of the related ToggleBarButton.

  This example requires that you know advance how toggle buttons and buttons, you have, so it will not evolve well. Whenever you add a button, you will need to enter hard in the 'getButtons' function, which implements the ButtonBarButton instances. But if you have a known quantity of buttons, no problem.

• Elements of the array and the data binding

  In Flex 1.5 elements of the array do not support data binding. Here is an excerpt from a document of Flex 1.5 older ( Chapter 18, data binding):
  
  

  Quote:
  The tables can be used in the bindings in the same way as other types of object. However, the elements of array do not pull a ChangeEvent when their value is changed, so that they can not be used as a binding source when running.
  Data binding does not, however, copy initial values in the request or the instantiation of the component, so the connections with their source as an array element will be set to the value of the element of array (only once, at initialization time) and will not be updated later if the array element is changed.

• Symbol of the three discs stacked to the left of the power button on the front of the CPU

  Pavilion p7_1070t CTO desktop PC

  What is the symbol on the left of the power button on the odf before the CPU?  It looks like three stacked discs and a light under the symbol flashes?

  Hello

  It's just a visual indication of when your drive is reading or writing data - so if it flashes quickly this would indicate a lot of hard drive activity, less when the LED flashes slowly.

  Kind regards

  DP - K

• Typedef reference FPGA not updated in the private class data

  I have a FPGA reference related to a typedef that is passed in a LVOOP object. If I change the FPGA of computer simulation of dev to the use of the actual hardware, all references to the typedef are updated which are controls on a diagram. But the typedef in my private class data seems not not to date, so I'm broken son until I replace the control to private data of my class with a copied from my block diagram. Has anyone seen this? Is there a CAR already? I can create a small project to reproduce if necessary.

  Edit: this also seems to happen when I change bitfiles or change to open a VI a bitfile opening in the Configure dialog box open FPGA VI.

  Hi Greg,.

  I was able to reproduce your problem thanks to your easy to follow instructions.

  I noticed that type def successfully by checking "Bind FPGA host of reference to the type definition" in the open FPGA VI reference configuration. What does not automatically update is the Issue.ctl of OBJECT-oriented programming, which has a nested type definition in the private data reference.

  The fastest solution, that I could find was to right click on "Issue.ctl" in the project, and then click Save. This problem immediately solved the broken wire error.

  While configuring open FPGA VI reference has the practical ability to bind to the def of type, it does not broadcast this change to data private to the class. I call not this bug, but I can see how you want it works this way.

  I would recommend you post that on theExchange of ideas (I see you're already regularly here).

• Best practices for the handling of data for a large number of indicators

  I'm looking for suggestions or recommendations for how to better manage a user interface with a 'large' number of indicators. By big I mean enough to make schema-block big enough and ugly after that the processing of data for each indicator is added. Data must be 'unpacked' and then decoded, for example, Boolean, binary bit shifting fields, etc. The indicators are updated once / sec. I'm leanding towards a method that worked well for me before, that is, binding network shared variable for each indicator, then using several sub-vis to treat the particular piece of data, and write in the appropriate variables.

  I was curious what others have done in similar circumstances.

  Bill

  I highly recommend that you avoid references.  They are useful if you need to update the properties of an indicator (color, police visibility, etc.) or when you need to decide which indicator update when running, but are not a good general solution to write values of indicators.  Do the processing in a Subvi, but aggregate data in an output of cluster and then ungroup for display.  It is more efficient (writing references is slow) - and while that won't matter for a 1 Hz refresh rate, it is not always a good practice.  It takes about the same amount of space of block diagram to build an array of references as it does to ungroup data, so you're not saving space.  I know that I have the very categorical air about it; earlier in my career, I took over the maintenance of an application that makes excessive use of references, and it makes it very difficult to follow came data and how it got there.  (By the way, this application also maintained both a pile of references and a cluster of data, the idea being that you would update the front panel indicator through reference any time you changed the associated value in the data set, unfortunately often someone complete either one or another, leading to unexpected behavior.)

• What is the difference between a triangle wave, waveform of the triangle and the triangle pattern

  To generate a waveform of triangle, I have 3 vi I could use. Signal Processing-> generation of signals-> Triangle wave.vi, Signal-> signal generation processing-> Triangle Pattern.vi, programming-> wave->-> generation of waveform analog waveform-> Triangle waveform.vi.

  What is the fundamental difference between these 3. I understand that all 3 have a different set of entry and I can use them according to what combination of input data that I have. Are there any special cases for which each is used?

  You should get really understand DAQ and the difference between the data types. When you create a waveform data type, the data type includes timing information. For the acquisition of data the most important is the dt or the time between samples. You have configured the DAQ Assistant to use this information to generate the waveform. When you create the table 1 d, obviously it cannot contain information of timing and when you convert dynamic data, all you will get is a default dt 1.

  As indicated, you can use either feature, if you create the table 1 d, you will need to change the data to add to the dt you want.

  Look inside the basic function generator. It uses the lower level of triangular-wave function, you already mentioned. See how the timing information is added to the output of table D 1.