I have a user control defined in a separate project (To reuse) which has two comboboxes and a button. I will be using this user control in other projects. The user control has a view model class. This view model class handles selected item changed in the combobox and also has a command delegate to handle the button click.
Now my question is when I use this user control within another control in another project I want an event to be raised within this owning control as well whenever a new item is selected in the combobox. Also, when a button is clicked in the resuable control I want that event to be raised in my owning control as well so that I can execute some additional logic. Can somebody suggest which is the best way to handle this?
Thanks,
Ranjith
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I am searching for a way to make a SAPUI5 custom control accessible. I build a kind of tile (based on a VBox control) and try to get this custom control accessible over keyboard (tab) or by clicking the mouse.
My idea was to implement sap.ui.core.Control#getAccessibilityInfo in my control, but this seems never be called. Currently I am trying to debug how other stuff is doing it like https://github.com/SAP/openui5/blob/master/src/sap.m/src/sap/m/ListBase.js but I can't find a way that works.
My control is currently placed inside a table, if I click on it the focus will be set to the table column. If I press tab-key it jumps to an input control inside my control.
My assumption, I miss something so that the control would be considered as focusable somehow.
I think that you are looking for ItemNavigation. VBox wasn't design to support keyboard navigation on it's content, but you could add a hook to onAfterRendering of your custom control, collect all dom refs you need to navigate on and pass them to ItemNavigation.setItemDomRefs.
If you need an inspiration you can have a look at sap.m.List implementation.
The important thing is to add oRM.writeAttribute("tabindex", "0"); // allows selection into the renderer of my own control. That allows to use the tab handling. Full code in a different question: How to copy&paste SAPUI5 controls by pressing Ctrl+C and Ctrl.V?
With this the control can be selected.
Also notice the this._bExcludeFromTabChain = false; in init section.
A user clicks on menu item and a child window is shown (non-modal). How do I prevent user to not open the same window again?
I know I can handle initialize and Closed events of the child window to add.remove it to some collection of opened child windows, but I am looking at the pure and clean MVVM way.
I think you should add one property to your view model class to handle visibility of a view, then bind it to your view. Inside setter section of you property check if its value is changed, if not just return.
You don't need to create a lot of child windows in your application, just control the visibility of existing one and change the data you want to show.
Hello I have a prism/mvvm style application and am using the RadMenu control. I also have a view/view model pair in one project and another view/view model pair for my RadMenu control in another project. Basically I would like to use the event aggregator to send an event to the view model for the RadMenu (the view model that is paired with the view that the RadMenu sits inside of). So that the RadMenu's view model can notify the RadMenu to switch to a different RadMenuItem programmatically. I think I can use a blend behavior to contain the behavior I'm looking to reproduce, but I cannot find a method in the RadMenu that will allow me to programmatically select a specific menu item.
If the control does not support this now, is there a work around? Thanks.
I believe this is a missunderstanding. As far as I know there is no selection on the RadMenu. You can only Check or Uncheck Items in your Menus. Are you trying to emulate a user clicking on a specific item just to trigger the functionality behind the menu-item? If that's the case I would propose another way and directly handle the EA-Message in the ViewModel. You can trigger the code from there then. If you're doing MVVM the logic behind the menu-items is implented in your VM anyways. :)
I'm using a RadGrid for changing record status's. Users have the ability to select a status from a dropdown and update that record with that status. Depending on the status chosen, when the user clicks update I want to popup an additional form so the user can fill out more data required for the update. I'm not sure the best way to go about implementing this. Any suggestions are appreciated.
One way is to use the RadWindow like a modal and pop it up to the user via client-side JavaScript. We use RadWindows in our applications and it works. Or, the RadWindow supports a Nested Grid or View that you can have as a record's child; so you can have the master record, click on the arrow on the left and expand the record to view a nested grid of data, or a custom view (via the NestedViewTemplate property). You can also have the form in a DIV, hide it, then show it via JavaScript too.
Those are two ways.
HTH.
I have created a very simple wpf app with mvvm light.
I have rows in a list view, these are templated representations of Book objects.
I can click a row, then click an edit button, this button loads a new window and sends the new window the book to edit (using mvvm-light's Messenger).
The issue I have is when I edit the record in my new window the data on the main form is updated. The text boxes are bound to the object received via the Messenger.
I know this is because I have essentially passed a reference to the same Book object around the place, therefore I update in one place.. and voilà it updates on the main page too.
What I would like to know is.. is there a standard way/method/concept to achieve what I am trying to do? i.e. create an "edit" page/screen with the option of discarding the edits?
thanks.
Could you make your entity implement ICloneable and create a clone for editing?