Likewise, this did not change the reality that a controller could have any number of associated views including none. The init function is a great place to set up how your controller interacts with the view, and is usually used in conjunction with another Controller function - control. Tags for this Thread best practicecontrollerrefselector. The control function makes it easy to listen to events on your view classes and take some action with a handler function. And finally, it makes for a much nicer debugging experience, since each class file is loaded independently rather than having a single ext-all-dev. The API documentation uses a number of flags to further commnicate the class member's function and intent. If you want to add listeners to all of your buttons then you would use a query not a ref.
So we've started to use Controller 'refs' quite extensively -- but a thought should be DOES the controller correctly resolve the selector at all?. Controller.
[Best Practice] Refs and their selectors within a controller
These Controllers use CSS-like selectors (called “Component Queries ”) to match components and respond to their events. They also use “refs” to.
We are now at the point of refactoring our controllers and I have a question about 'best practice' for selectors and refs. First of all, what would be.
You can also toggle the collapse state of all examples using the toggle button on the top-right of the page. Should we burninate the [pop] tag? Since refs uses xtype to identify an object, there is this confusion, because xtype is at class level, not object level, so what if multiple objects exist for that xtype?
These event domains intercepted events as they were fired and dispatched them to controllers controlled by selector matching.
extjs4 What is the point of refs in Extjs Stack Overflow
Bet the number of components has an impact there Let's update our Users controller to tell us when the panel is rendered: Ext. Getting and setter methods that correlate to a class config option will show up in the methods section as well as in the configs section of both the API doc and the member-type menus just beneath the config they work with.
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|In addition to filtering by string you can filter the class members by access level, inheritance, and read only.
But they are not suitable for components that occur within a top-level windows and panels -- unless they are also modal. This behavior is consistent with previous Ext. Let's look at another example: Ext.
Active 2 years, 8 months ago. In ExtJS, each class is defined in its own file, and the organization of the files matches the class names.
Refs are good if their selectors can never select more than one view. Sencha Touch refs examples and documentation you to retrieve and manipulate components on the page inside of your controller's actions.
This means that the ViewController is no longer forced to manage states where there is no view or many views.
US: 1 We've been using the ref system extensively -- and so far it seems to always return the correct item. In addition to filtering by string you can filter the class members by access level, inheritance, and read only. Direct Ext: 4. We create a controller, and add a ref to the textfield. Obviously you can create your own method like you told us, but using refs is exactly the same, and you can create lots of them using the refs prop array without creating lots of getters for every single component needed.
EXT JS – My Learning Experience — Advanced Visualization Services documentation
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|Also see the Ext. Bet the number of components has an impact there When you save 3 -- can I assume you meant 2 referring to my example, I proposed two top level windows.
We are now at the point of refactoring our controllers and I have a question about 'best practice' for selectors and refs. Docs Help.
The overall effect is that whenever any component that matches our selector fires a 'render' One of the most useful parts of Controllers is the new ref system.
Video: Sencha controller refs selector Sencha Architect
Controllers within ExtJS 4 MVC apps are the brains of your. ref: The reference that you want to create; selector: The selector used to “find” the.
For example, every item in the config property will be pre-processed like this: Getter and setter methods for every config property are automatically generated into the class prototype during class creation if methods are not already defined.
Maybe I will. By default, undefined will be returned when the query does not locate the target component. The example above will create a new User model instance and add it to the AllUsers Store. For the purposes of ViewControllers, we can look at just two examples.