I can't seem to grasp how FXML and data binding is useful beyond basic, static views
The markup is not any sort of logic/iteration as the additional taglibs in JSP capabilities (i.e. < c:forEach var = "${model.") (Person}"> < c: out >$ {person.name} < / c:forEach >) so you're stuck making the dynamic aspects of the UI in pure Java (unless you are supposed to use < fx:script > to do this, that there is little or no documentation/examples/etc.). Makes organizing difficult associated classes because you so specific to the logical view of the controller (i.e. for each complexItem - create a graph of node that represents a complexItem, add to the list;). It seems that this sort of thing belongs to the "view" class What happens if the complexItem is a custom control specified in FXML. What grade is supposed to handle the onMouseClicked event when the user clicks on complexItem. The controller class that supports that the first of the complexItem, or the controller class displayed several complexItems in the list? You're supposed to pass the event in the chain of controllers, each parent is to know?
I can't just wrap your head around this design and how it can be used to create a correct application of the MV * with a clean design. FXML basically breaks controllers me by exposing specific UI widgets. Looks like there should be a separate view class that stores the FXML. Especially in cases where you need to "Finish" the view because all you want to do, cannot be expressed in FXML (like using half of the ControlsFX controls). So you want a separate controller class to manage the model update (and switch to the update view in the case of Passive View or update the properties in the case of Supervising Controller) and managing events behaviors. It works well, because FXML and the associated RAD tools requires you to use one and fx:controller only category excluded.
I want to as JavaFX, I don't really have, but the lack of attention in this area, it's mind-boggling. I read through tons of blog posts and it seems that there are tons of questions and debates but few answers and resolutions. I even bought two books on JavaFX8 Apress and or design a model address other than a small introductory text or two and a reference to Afterburner and Dolphin something or other. It seems that no one has proved a solid design with lots of views/controllers/presenters/viewmodels nested... I don't know even what term used more because it's so confusing.
> The markup is not any sort of logic/iteration as the additional taglibs in JSP capabilities (i.e.
Taglibs themselves are implemented in Java. You can implement a custom control in fxml, which could allow you to get similar functionality. Personally I don't really make sense in XML, I think it is better expressed in a procedural or functional programming language and just leave XML for declarative programming; that is for straight definitions of things.
If you really want to combine JSF taglib features with JavaFX style, you should look into CaptainCasa, that serves as a front end of JavaFX for JSF applications (I've never used this framework).
> unless you are supposed to be used
Yes, you are made to define custom controls, use the logic of the controller or use scripts (in whatever language please). The model is the same that javascript html (which is also usually XML based like FXML), which I think turned out based on how many javascript/html is there. I'm not a big fan of the javascript/xml model, but at least with JavaFX, you have a little more flexibility based on the ability to choose between several languages for scripts and controllers, a collection more complete and accurate the confrontations of control in element names widget and a possiblity to extend the basic elements to create your own custom elements to incorporate the new controls and layouts rather than continuously replace the div and span. > It seems that this sort of thing belongs to the "view" class
I don't really know what the view class is in your definition. There is no view defined in JavaFX class. The closest thing is probably a control's appearance, but I feel that is different from what you are suggesting. The FXML system was built not to be opinionated concerning the architecture used to build applications with it (like an anti-RAILS framework). The reason for this is that it's just a basic shipped with Java runtime component and not a framework for application complete. You can always build a style of RAILS framework that had such notions as the view classes and operate with FXML. There are samples of these frames if you are interested; JRebirth, Griffin. And there are others who do not use FXML at all; for example FXForm. Perhaps my favorite and start studying is Afterburner.fx because of its simplicity.
> What happens if complexItem is a custom control specified in FXML.
I guess that there are different types of "custom controls", those who actually extend its control and provide an API and control skin following the architecture of JavaFX controls. In this case the control generally encapsulates the view state (for example who did, how event handlers are defined) and delegates to the skin and a pattern of behavior (interface keyboard controls, etc.) to manage the predetermined nodes, etc. In many cases for the application code, such a complicated configuration is unnecessary and can make your code more difficult to understand due to the increase of indirection involved by the model.
The other type of control is something a controller FXML that loads its definition of layout of the user interface in FXML and encapsulates its hierarchy and control node interface in a class that can be instantiated in FXML, as defined in the tutorial Oracle Mastering FXML.
Both types of controls have their place in a JavaFX application, with extensions of control usually from libraries such as ControlsFX instead of the application code.
> What grade is supposed to handle the onMouseClicked event when the user clicks on complexItem. The controller class that supports that the first of the complexItem, or the controller class displayed several complexItems in the list?
Initially, a UI (node) element that represents your complexItem will receive the mouse click event. One way to do it is to have a class of skin (encapsulating nodes) associated with your model (or the view in some modern managers model) and which may have observable properties that are set when the actions are performed on the node. Then your view model/presenter can observe the changing properties in the skin to react based on the observable properties. You can see many examples of this model in the JavaFX controls source code base or this app of TIC-TAC-TOE (most of these samples are not based FXML). Most simple, is often to encapsulate the nodes and the event handlers in a single class (e.g. the FXML controller), as is done in the FXML connected mastering tutorial above.
> Are you supposed to pass the event in the chain of controllers, each parent is to know?
Generally not, I would say. Treatment of JavaFX event will automatically events up and down the hierarchy of nodes. Your controllers (or skins) according to what is in fact linked with the nodes, can add appropriate listeners and filters which react to the events of the UI and update your State application model directly or set the observable properties that domain not associated with GUI logic could listen and react on. You can also introduce a bus event to propagate and manipulate events (if your application warranted and such an architecture is consistent with your app needs). If you want to be really sophisticated, then you slap on an Messaging model-based architecture, but by then you're really in a lot of complexity and really need to know what you're doing.
> I can not just wrap your head around this design and how it can be used to create a correct application of the MV * with a clean design. FXML basically breaks controllers me by exposing specific UI widgets. Looks like there should be a separate view class that stores the FXML.
Well what are the 'controllers' FXML. Maybe just don't call them controllers. They don't really control anything, unless you put the logic in them to do (and you don't need to). By default, they are just holding FXML and Java classes link to allow references to JavaFX nodes and events related to the FXML Java handlers. You do not even need to call your controllers to controllers in your code, you might call them just something like myItemUIBinding. Again, I suggest that you take the time to look at afterburner.fx, to see how a more 'opinionated' framework defines a simple architecture to help impose a stronger separation of concerns than the standard vanilla to FXML controller installation.
> Then you want a separate controller class to manage the model update (and switch to the update view in the case of Passive View or update the properties in the case of Supervising Controller) and managing events behaviors. It works well, because FXML and the associated RAD tools requires you to use one and fx:controller only category excluded.
I guess I don't understand that. You can incorporate several controllers of the child. You can create your own controllers. You can set the listenable properties on the controllers. You can pass objects to model to the controllers. You can bind a controller to a skin or you can use an Ombudsman model to create a controller supervisor. Acquired some of these things may be obvious or not clearly demonstrated in tutorials. There is no equivalent (well used) JavaFX to say spring or Play that sets common criteria in a unique setting and open source large scale the application based on it you could read or derive best practices of.
> No one has proved a solid design with lots of views/controllers/presenters/viewmodels nested, it seems...
Agreed is that there is a lack of scale large source code public for applications that rely heavily on FXML and demonstrate an architecture for building complex applications based on it. Is perhaps the closest, you can find the source code of SceneBuilder, but, unless you create a development such as scenebuilder tool, you can see that some of the reasons he doesn't quite apply to your use case.
Tags: Java
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