Does anyone have any info on this? I'm new to cocoa, all tutorials seem to be for iPhone which uses a different view controller. Anyone willing to provide a step by step for adding labels to a custom cell? (I'm pulling from Core Data)
EDIT: It's important to note I'm using Core Data here. Many tutorials use arrays.. I don't understand why you would use that??
I'll award an answer quickly!
Zach
I'm not sure if this is going to help you, but your problem seems unrelated to your use of CoreData.
If I've understood your problem correctly, here are some steps:
Populate your NSTableView
Using CoreData, what you can do is put an NSArrayController object in your XIB document, set its mode to Entity and choose the Entity you want to display in your TableView (all of this from the first tab of the inspector on your array controller object).
Then, bind your NSTableView Content to the arrangedObjects of the array controller. You might also bind the selectionIndexes and use some sort descriptors on the array controller to order your data, as CoreData will give you a set rather than an array.
Click on your table view as many times as necessary as to select the table column in which you want your custom cell to appear, and set its Value binding to arrangedObjects too.
Set your custom cell
Finally, click on the cell of this table column and in the "Identity" of the inspector, change the class name of the cell to the class name of your custom cell.
I'll let you read the appropriate documentation to implement your custom cell according to what you want to achieve.
With the different bindings I've described, the objectValue of your cell should be the object from your array controller at the same index of the row your cell will appear on.
Please note that I've not tested again all of these steps but answered from memory... there might be details I've missed but you should have the main steps here.
Related
I am working to a window with multiples NSTableView (in my case 8) and I am not sure if it's correct what I do.
My screen look like printscreen : custom window
In principle my window it's a Master - Detail Interface a selection of table from the left must populate the right table.
Until now I succeded to populate all the tables from the left with help of cocoa binding - NSArrayController which contain custom objects but further I don't know how continue, obvious in my mind it's to implement delegate method for NSTableView: tableViewSelectionDidChange:notification but this require more glue code.
My question if it's possible to populate the right table with help of cocoa binding without glue code. I read documention and I tried with selection proprety of NSArrayController but all my attempts failed. Any suggestion?
I've a hard time getting my Cocoa application to work as expected. It consists of a toolbar in the main.nib and a custom view in a details.nib file. Now I want the user to select an entry in a NSPopupButton in the toolbar and the content of the custom view should be changed accordingly.
To achive this I've added an ArrayController to my main.nib, showing the following configuration:
Furthermore the Managed Object Context is bound to the Model Key Path delegate.managedObjectContext (it is no document based application).
With this configuration the NSPopupButton works just fine and if I add a Label to the toolbar (also in the main.nib) and bind it's value to the selection (Controller Key), name (Key Value Path) the content is refreshed whenever I change the selection.
The Bindings of the NSPopupButton look like shown in the following screenshot:
So in my details.nib I tried the following to achieve the same effect. I've added an ArrayController, whichs Managed Object Context is also bound to the Model Key Path delegate.managedObjectContext. Also the configuration is exactly the same as shown in the above pictures. I've then added a label and bound it's value to the selection (Controller Key), name (Key Value Path) of this ArrayController.
The problem is that the Label only displays the the initial selection after the application did launched correctly. Afterwards, when I change the selection of my NSPopupButton, the label does not change accordingly.
What are my options to get the ArrayController working accross multiple NIB files?
BTW: I've tried to follow this blog post to get it working but it seems I'm missing something here.
Update:
If I replace the Label in the details.nib by a NSTextField and change the text of it, the changes are reflected in the related NSPopupButton entry. So I guess I made something right, but the main problem remains: I can only edit the entry which was loaded during application startup. Switching to another NSPopupButton entry does not change the text in the NSTextField.
Update 2:
I've created a small sample project with exactly the same configuration and uploaded it on GitHub. So feel free to check it out or create a pull request with a solution approach.
It seems you're missing the fact that, when you create the second array controller on the Details.xib it has no relation to the array controller on the MainMenu.xib. They are two separate instances.
When you change the selection on the PopUp the only array controller affected is the one on MainMenu.xib.
You have several options here:
When you create your DetailViewController pass a reference to the array controller on the Controller and bind to that (don't create a new one on the details.xib)
Just use simple KVO to observe the selection on Controller, and programatically change your label value.
Just use simple KVO to observe the selection on Controller and update the array controller on the DetailsViewController to keep them in sync.
your solution here...
As long as you understand what's going on I'm sure you'll find the best solution to your original problem.
Hello there: I have in essence a master-detail application with one master view-based NSTable view and two detail views. My master NSTable loads and displays data from a Managed Object Context correctly. One of my detail views should load the image of the object in selected table row. But here is my problem that no one else on the Internet seems to have:
My "selection" object isn't changing. I did bind the the value of image view on my detail view to the Array Controller, and controller key is: "selection", model key is "image". The image view only loads the first object's image in the table, and if I click/select on other rows, the image isn't changing. So it seems like "selection" object is always the first object. Since this is all done in Interface Builder, I don't have any code to show, sorry.
Does anyone know what is going on? Why is the "selection" object always the first in the table? Thank you!
You need to bind the NSTableView’s selection to the NSArrayController’s, like so:
Im new to IOS developing and i would like, as one of my start projects to learn more about table views. I would like to fill a table view up and then be able to handle clicks on them, to open a webpage etc. Does someone know a good tutorial or code for this?
Thanks!
What you want is the UITableViewDelegate documentation.
Specifically, tableView:didSelectRowAtIndexPath:. You can then lookup the cell at the given indexPath and handle it accordingly. More info on delegation can be found in the docs if you need it, but you'll want to implement methods like that in the object referenced as the delegate of your tableView
I need to create an NSMatrix with NSImageCells bound to an array controller. So the content of the NSMatrix is bound to an NSArray (so there are as many NSImageCells in the matrix as there are objects in the array), then the image path of the NSImageCells are bound to a key called "iconPath" in the Array Controller.
And then when an image cell is clicked in the matrix, I need it to perform an action. I know how to use bindings, and I have a concept like this working in an NSTableView, but I have never used NSMatrix before, so are there any good resources or sample code that would help me get started with this?
Thanks
If you want them to send actions when you click on them, then you probably want NSButtonCell instead of NSImageCell. A button cell can still contain an image.