Re: redrawing a particular subview in non mainWindows.
While sometimes you simply have no choice but to loop through your windows, it isn't the first approach that comes to mind for this. In the MVC design, you have separate views (one in each document) and separate controllers (each one referenced from each document 1:1) but what you do need is a single common data model that all of these controllers are referencing. Since this is common to all, it is a good choice for a singleton. Then, when any view, via the controller, updates the model, all the other controllers get informed about the change (via KVO, bindings, notifications, whatever) and update their views accordingly. You should not need to loop through your windows and try and force an update, that's just trying to work around the MVC design instead of making proper use of it. The singleton will have to be external to the nib since there is not one instance per doc, but one instance per app, and you'll have to make that connection as each nib is loaded. From then on, however the updates notifications are actually implemented, it will work correctly without further intervention on your part. If you find yourself thinking you need to manage collections of things yourself just to handle this sort of update notifications, chances are you've overlooked something obvious, since there are numerous built-in mechanisms available for handling just this, and very elegantly too. --Graham On 28/09/2009, at 4:19 AM, jon wrote: ok, after thinking and analyzing what was going on, everytime i make a new document in the running app, it created a new instance of the window and all related stuff in the window including myOutlineView. and then my dataSource in code remained the same that fills out these outline views... (atleast this is my current understanding). so my question now morphs into: as Jens says below, he in some cases is looping through the apps window list... in my case, in my main document xib, i have an "outline Controller" which is type NStreeController... and i have this defined.. IBOutlet NSTreeController *treeController which is the thing that is controlling the outline view, and appears to be the thing i want to update... the question it appears to me is: that this "treeController" also is made into multiple instances with each new Document, is there an already defined "loop" of these? (a list of the open document's NSTreeController *treeController;) or do i need to make an NSMutableArray, and keep track of these myself? and then update these instances myself by looping through them? ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: redrawing a particular subview in non mainWindows.
On Sep 27, 2009, at 11:19 AM, jon wrote: the question it appears to me is: that this "treeController" also is made into multiple instances with each new Document, is there an already defined "loop" of these? (a list of the open document's NSTreeController *treeController;) No. I think you're confused about now nibs work. In your example, 'treeController' is an instance variable (or field) of your document class. That means every instance of the class has one. What happen when creating a document is that the NSDocumentController creates a new instance of your document subclass, then loads a new copy of the nib with your document object as its 'owner'. This creates a new instance of every object contained in the nib; and the instance variables of the owner object (your document) get connected to those new objects as you specified. So in your new document object, the treeController instance variable will point to the new tree controller. So every open document has one tree controller. If you want to find the list of open documents, ask the NSDocumentController. —Jens___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: redrawing a particular subview in non mainWindows.
ok, after thinking and analyzing what was going on, everytime i make a new document in the running app, it created a new instance of the window and all related stuff in the window including myOutlineView. and then my dataSource in code remained the same that fills out these outline views... (atleast this is my current understanding). so my question now morphs into: as Jens says below, he in some cases is looping through the apps window list... in my case, in my main document xib, i have an "outline Controller" which is type NStreeController... and i have this defined.. IBOutlet NSTreeController *treeController which is the thing that is controlling the outline view, and appears to be the thing i want to update... the question it appears to me is: that this "treeController" also is made into multiple instances with each new Document, is there an already defined "loop" of these? (a list of the open document's NSTreeController *treeController;) or do i need to make an NSMutableArray, and keep track of these myself? and then update these instances myself by looping through them? thanks, Jon. On Sep 27, 2009, at 9:54 AM, Jens Alfke wrote: The way I do this is to loop through the application's window list, ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: redrawing a particular subview in non mainWindows.
On Sep 27, 2009, at 7:04 AM, jon wrote: so far i can find the chain of windows, like this, but i can't figure out how to go deeper into them to be able to udpate the custom view down deep maybe i'm approaching it wrong too... The best way to do this is to use NSNotification. Post a notification when the outline content changes, and have each object that manages one of the outline views (probably the NSDocument or NSWindowController subclass) observe that notification and update its outline view when it's received. There are some times when you do need to tell every one of your windows something. The way I do this is to loop through the application's window list, then look at each visible window's delegate and check whether it's an instance of my window controller subclass; if so, I cast the pointer to that subclass and call a method on it. (Since you're using NSDocument, you could probably get the same effect by getting the list of open documents from the document-controller object.) —Jens___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: redrawing a particular subview in non mainWindows.
I am probably not describing it accurately,I'll try to understand and describe what is going on more accurately in a bit, more likely, i have one set of data, and each time a new window is open, it is creating another instance of the outline view, i have not found away to get at the old instances of this view... thanks, Jon. On Sep 27, 2009, at 8:31 AM, Graham Cox wrote: so I'm skeptical that your description is really accurate. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: redrawing a particular subview in non mainWindows.
On 28/09/2009, at 12:04 AM, jon wrote: i have one instance of Outline View called myOutlineView, so no matter how many documents are displayed on the screen, there is only one myOutlineView instance, I'm pretty sure that is never going to work. If I read you correctly, you have a single view instance that is simultaneously a subview of any number of documents? If so, that's just not a valid setup. A view must have a distinct unique parent view and window, not multiple parent views. However, I'm not sure how you could even set this up, so I'm skeptical that your description is really accurate. What you need here is a separate view instance in each document but possibly sharing the same data source or controller such that they all show the same data, or sanest of all, separate data sources/ controllers that all reference a common shared data model - that is after all what you've described as your needs. This last will "just work" as long as you strictly follow MVC and use a standard recognised method for notifying views, like KVO or bindings. --Graham ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
