I would like to know whether there is a way to loop over all the controls in a view (or all controls under a specific control) in SAPUI5. I'm looking for an analog to the vanilla JS document.body.querySelectorAll('*') function.
The closest thing I know of would be the View class's getControlsByFieldGroupId method but that would require me to tag all elements in the view, which I'd rather not. I've looked in the API reference to no avail.
Is there some clean way to do this in SAPUI5 1.71?
Thanks in advance for your input!
Joshua Schroijen
You can try: YourViewInstance.findAggregatedObjects(true); which will return all the aggregated controls.
Related
I have to switch between the views and i am using lot of ng-if's in my code. Can i have a better approach rather than using all ng-if's in angular ?
I don't know what to use apart from ng-if's
There is a better way if your view is switching on through one condition you can make you of ngSwitch
you can refer this link
If above is not your use-case then you can build a structural directive for it.
Im currently working on a project where I want to the user to be able to chose between two layouts (list and grid) at runtime. I was searching for examples in the UI5 documentation (Sample Apps) and on GitHub, I did not find examples for how to to this or best practice examples. So I thought about how I could achieve this behaviour and had multiple ideas, but somehow none of them feels like doing this would be best practice.
Idea 1 - Destroy the "old" controls and generate the new controls inside the Controller
My first idea was to destory the controls I do not longer need. For example if the user wants to switch to the grid layout, the list and every control related it to it gets destoyed. In the controller the needed controls for the grid are created and then rendered in the view. In my eyes this would mix up view and controller logic inside the controller and does not feel like best practice
Idea 2 - Create two views and switch between them
My second idea was to create two views, each for the layout I need and switch between them. This would mean a lot of code replication in both the controller and the view. Does not feel like this would be the right way.
So I would be glad if you have own experience on this or if there is really something like a best practice for such a behaviour.
Thank you and kind regards!
I would say, idea 2 because of the following reasons:
It is best practice to work according to the MVC methodology which means separating logic, view and data. Since the controls define your view it is best to instantiate your controls in the files that are meant for it (the XML Views).
Performance: Destroying all controls means that if the user decides to switch between views, the controls have to be re-instantiated by the controller every time. This is, even though you probably won't notice it, not performant.
You don't need code replication: The argument of code replication is not necessarily true. If you can execute the same actions in the list and grid-view, it should be enough to just link the controller to both views and in that case you'll hardly have to replicate any code. Just make sure that you split your logic in enough functions. That way you might need to write some extra public functions to handle events, but not much more.
experts,
These are two very basic connected questions.
I'm studying SAPUI5 and I cannot find means to position my UI elements on the screen.
In my view.js file I create, let's say, a button, a datepicker and a text field.
If I do something like:
aControls=[];
<Define the button - oButton>
aControls.push(oButton);
<Define the datepicker - oDatePicker>
aControls.push(oDatePicker);
<Define the text field - oText>
aControls.push(oText);
return aControls;
then I get all three elements positioned in a row one right after another.
I cannot use css, because I pass all those objects in one array and all of them are placed into a common div on index.html.
How do I position these? A link to any good tutorial/examples is very welcome.
Also, how do I refresh UI elements?
For example, I have situation, when on button press I make a call to the server, get response and put it into a using something like:
response.placeAt('some-id');
The button is created in the view.js and the call is processed in controller.js.
The response is added every time I press the button and I have no idea how to replace the old response with the new one.
A good link is very welcome.
Thanks.
There are a lot of layout controls of SAPUI5 you can use: Grid, HorizontalLayout, VerticalLayout, MatrixLayout,etc. You can check the examples and see how you need to layout your views.
You are currently doing UI5 JS view which implements createContent method to define views, this is one approach. Another common approach is to use XML views, it is declarative and more straightforward, also needs less code. See this simple example in JSBin of defining XML view and controller to refresh UI.
SAP UI5 is all about Model(JSONModel/ODataModel)-View(JSView/XMLView)-Controller. You are highly recommend to read this MVC example, though it is based on SAP UI5 mobile, the content is relevant to SAP UI5 desktop as well.
Hope you will get some hints.
I am creating a slightly elaborated form with Angular. This form can be submitted, then modified or simply displayed (with everything in read-only for example).
For now I have 3 templates with 3 controllers for each action (submit / edit / view) and the form is added as a partial (ng-include). The form has also its own controller. Is it the right way?
Also, should I make the form's controller the children of the templates' controllers or the opposite? I am using the same model for each action behind the form and I guess it should be injected through the template's controller.
It's my very first attempt to do this and I would like to have a few advice's and hints since I am afraid of going the wrong way. Thank you!
yo can use different template for each of them with single controller, different controller for each of them is not a good idea because there may be some common function in them then you need to write that function in each of them.
you can use common model for them,i am doing the same.
I see this is promising solutions to what you are looking for
can you try this http://vitalets.github.io/angular-xeditable/#editable-form
First off - I'm not using MapKit. I'm using my own controls for something entirely different. But the annotation view is something I'd like to mimmic. I've seen other applications with similar views to indicate state or actions on other controls. However, scanning through the class library I can't find a view already in the SDK. Do I have to create my own custom view that mimics this look and behavior or does the iPhone provide a standard way of showing these annotations?
You have to create your own (or find an open source implementation). The annotation views are actually drawn by the map view so they don't work outside of a map.
Well I couldn't find an open source solution so I built my own. To save anyone else the trouble, the source can be found at
http://github.com/appsinyourpants/Pants-Framework/tree/master/Classes/Views/