Re: How to implement Autosaving, Browsing Versions, Reverting to Last Saved in Lion?
Re: How to implement Autosaving, Browsing Versions, Reverting to Last Saved in Lion?
- Subject: Re: How to implement Autosaving, Browsing Versions, Reverting to Last Saved in Lion?
- From: Zorg <email@hidden>
- Date: Wed, 27 Jul 2011 00:42:27 -0400
I've just realized I forgot to CC my message to the mailing list.
On Jul 26, 2011, at 7:41 PM, Zorg wrote:
> Okay, thanks. I filed it as rdar://9845409
>
> -Zorg:-.
>
> On Jul 26, 2011, at 2:00 PM, Kevin Perry wrote:
>
>> There is nothing that you are obviously doing wrong here. Please file a Radar with your test app attached.
>>
>> -KP
>>
>> On Jul 24, 2011, at 7:46 PM, Zorg wrote:
>>
>>> I'm having a difficult time figuring out how to implement these features correctly in Lion. I've created a very simple NSDocument based test app: http://pastebin.com/w396Xxi4
>>>
>>> A document in this test app has a window and a text field, the user enters text in the text field, that text is the "state" of the document. The app saves and loads that text.
>>>
>>> I'm saving the data using dataOfType: error: and loading the data using readFromData: ofType: error:. The user interface (the text field in particular) is being updated after being loaded in windowControllerDidLoadNib: unless the data is being reverted, in which instead the user interface is being updated in readFromData: ofType: error: (to test if a document is being reverted, I check if an outlet such as the textField != nil)
>>>
>>> Now, the saving of the document works fine. Browsing and choosing a different saved version of the document also works fine. What doesn't work correctly is reverting to another version. For example, if I create a new document, save the document, make a change (entering something new in the text field and hitting enter), choose revert to last saved version from the window titlebar, and save again, I occasionally get an error message "This document's file has been changed by another application since you opened or saved it." or I get "The location of the document ----- cannot be determined." (I say occasionally because I cannot get it to error the first attempt I do this while a document is still open, but usually always get an error on my second, and further attempts). I can also reproduce this error when trying to save after choosing a different version in the versions browser, however, I think I can only reproduce the error in this case when my document is in an edited state before trying to choose another version (If I save before trying to choose a different version and then save after, I don't get get an error).
>>>
>>> Here's a couple images of the errors:
>>> http://dl.dropbox.com/u/10108199/error1.png
>>> http://dl.dropbox.com/u/10108199/error2.png
>>>
>>> Also, is there a better approach to loading a reverted document than what I'm doing (instead of testing if an outlet of a document is nil)? Any help would be appreciated.
>>>
>>> Thanks,
>>> -Zorg:-._______________________________________________
>>>
>>> Cocoa-dev mailing list (email@hidden)
>>>
>>> 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:
>>>
>>> This email sent to email@hidden
>>
>
_______________________________________________
Cocoa-dev mailing list (email@hidden)
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:
This email sent to email@hidden