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  • How to implement Undo and Redo feature in as3

    - by Swati Singh
    I am going to create an application in that i have to implement an Undo and Redo feature. In the application there will be multiple objects located on stage and user can customize the position of the objects. But when user clicks on Undo the object go back to their default position and after clicking on redo object will move on the new position. So my question is how can i apply these feature in my application? Is there any library or any third party classes? Can some one help me? Thanks in advance.

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  • undo continually vi

    - by wowrt
    Hi, I am using vi(not Vim) and I would like to continually undo the changes made. u works for a single command undo and Ufor a single line undo. But Is there a way to undo continuously like vim(I recall a command in vim can even undo changes by time!) in vi? Thanks in Advance.

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  • Multiple undo managers for a text view

    - by Rui Pacheco
    Hi, I've a text view that gets its content from an attributed string stored in a model object. I list several of these model objects in a drawer and when the user clicks on one the text view swaps its content. I now need to also swap the undo manager for the text view. I initialise an undo manager on my model object and use undoManagerForTextView to return it to the text view, but something's not quite right. Strategically placed logging statements show me that everything's working as planned: on startup a new model object is initialised correctly and a non-null undo manager is always pulled by the text view. But when it comes to actually doing undo, I just can't get the behaviour I want. I open a window, type something and press cmd+z, and undo works. I open a window, type something, select a new model on the table, type something, go back to the first model and try to undo and all I get is a beep. Something on the documentation made me raise an eyebrow, as it would mean that I can't have undo with several model objects: The default undo and redo behavior applies to text fields and text in cells as long as the field or cell is the first responder (that is, the focus of keyboard actions). Once the insertion point leaves the field or cell, prior operations cannot be undone.

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  • NSUndoManager, Core Data and selective undo/redo

    - by Combat
    I'm working on a core data application that has a rather large hierarchy of managed objects similar to a tree. When a base object is created, it creates a few child objects which in turn create their own child objects and so on. Each of these child objects may gather information using NSURLConnections. Now, I'd like to support undo/redo with the undoManager in the managedObjectContext. The problem is, if a user creates a base object, then tries to undo that action, the base object is not removed. Instead, one or more of the child objects may be removed. Obviously this type of action is unpredictable and unwanted. So I tried disabling undo registration by default. I did this by calling disableUndoRegistration: before anything is modified in the managedObjectContext. Then, enabling undo registration before base operations such as creating a base object the again re-disabling registrations afterwords. Now when i try to undo, I get this error: undo: NSUndoManager 0x1026428b0 is in invalid state, undo was called with too many nested undo groups Thoughts?

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  • How can I undo my last git add/commit ?

    - by dan
    I edited a file and did: git add file.py git commit -m 'fixed bug' I then edited another file and performed a minor bug fix. I don't want two commits, one after the other, showing 'bug fix'. I want one commit with 'bug fixes'. How can I undo the last add/commit and change the first commit message? I was looking at the git reset, git revert, git undo commands but I don't want to screw up my repo with a guess EDIT: Found out how to do it: http://www.gitready.com/advanced/2009/02/10/squashing-commits-with-rebase.html

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  • How to "undo" (revert) Ctrl+L?

    - by zharvey
    I'm on 12.04 Desktop. When browsing the file system, it's convenient to type Ctrl+L so as to get the file path "Location" to render as a string; I can then modify the file path or even paste something in and get redirected right where I want to go. But often, after typing Ctrl+L, I find myself wanting to revert back to the normal way Nautilus renders the file path (as a series of buttons/links). What's the magical shortcut to "undo" Ctrl+L and go back to "normal mode"? Thanks in advance!

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  • confusion about installing/using git; how to undo

    - by dan
    I'm very new to ubuntu so I'm sure this is a dumb question. I wanted to install some source code that was on git. Don't really know what that means, I've never used git before, but I figured it was time to learn so I first installed git. Next I tried to clone the git directory of the software I want to install. I got a message saying "the authenticity of IP:IP:IP:IP can't be established". I went ahead and ended up with another message saying warning such and such will be added to known hosts. I went ahead and it said something about hanging up on the connection. After searching the internet for awhile I realized I didn't need git to install the software but now I have it installed and have added some host to some file or another. I'm concerned I've created some security issues I need to fix. I know this is stupid but can anyone help me undo what I've done, or better understand what I've done. Did adding a git project open up my system? Beyond that can anyone tell me how git works. Everything I've found assumes I know stuff that I don't yet. Thanks. Dan

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  • How can I make NSUndoManager's undo/redo action names work properly?

    - by Gabe
    I'm learning Cocoa, and I've gotten undo to work without much trouble. But the setActionName: method is puzzling me. Here's a simple example: a toy app whose windows contain a single text label and two buttons. Press the On button and the label reads 'On'. Press the Off button and the label changes to read 'Off'. Here are the two relevant methods (the only code I wrote for the app): -(IBAction) turnOnLabel:(id)sender { [[self undoManager] registerUndoWithTarget:self selector:@selector(turnOffLabel:) object:self]; [[self undoManager] setActionName:@"Turn On Label"]; [theLabel setStringValue:@"On"]; } -(IBAction) turnOffLabel:(id)sender { [[self undoManager] registerUndoWithTarget:self selector:@selector(turnOnLabel:) object:self]; [[self undoManager] setActionName:@"Turn Off Label"]; [theLabel setStringValue:@"Off"]; } Here's what I expect: I click the On button The label changes to say 'On' In the Edit menu is the item 'Undo Turn On Label' I click that menu item The label changes to say 'Off' In the Edit menu is the item 'Redo Turn On Label' In fact, all these things work as I expect apart from the last one. The item in the Edit menu reads 'Redo Turn Off Label', not 'Redo Turn On Label'. (When I click that menu item, the label does turn to On, as I'd expect, but this makes the menu item's name even more of a mystery. What am i misunderstanding, and how can I get these menu items to display the way I want them to?

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  • Jquery javascript - How can I let users 'undo' their modifications?

    - by Bill Zimmerman
    Hi, i have a basic jquery app that allows a user to edit and manipulate some lists on a page. What I would like to do is have a button 'restore original list' that the user can press to undo his modifications. What is the best way to do this? I was thinking of just copying the DOM from the list down, and pasting it in a hidden element someplace else on the page. Is this the best way to do this? I also noticed that jquery has a .data() function which I could use if I converted the data to an array and stored it this way. What are the advantages and disadvantages? Also, I'm open to any suggestions people have if there is some method I haven't thought of. Thanks for your help!

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  • Is this an acceptable approach to undo/redo in Python?

    - by Codemonkey
    I'm making an application (wxPython) to process some data from Excel documents. I want the user to be able to undo and redo actions, even gigantic actions like processing the contents of 10 000 cells simultaneously. I Googled the topic, and all the solutions I could find involves a lot of black magic or is overly complicated. Here is how I imagine my simple undo/redo scheme. I write two classes - one called ActionStack and an abstract one called Action. Every "undoable" operation must be a subclass of Action and define the methods do and undo. The Action subclass is passed the instance of the "document", or data model, and is responsible for committing the operation and remembering how to undo the change. Now, every document is associated with an instance of the ActionStack. The ActionStack maintains a stack of actions (surprise!). Every time actions are undone and new actions are performed, all undone actions are removed for ever. The ActionStack will also automatically remove the oldest Action when the stack reaches the configurable maximum amount. I imagine the workflow would produce code looking something like this: class TableDocument(object): def __init__(self, table): self.table = table self.action_stack = ActionStack(history_limit=50) # ... def delete_cells(self, cells): self.action_stack.push( DeleteAction(self, cells) ) def add_column(self, index, name=''): self.action_stack.push( AddColumnAction(self, index, name) ) # ... def undo(self, count=1): self.action_stack.undo(count) def redo(self, count=1): self.action_stack.redo(count) Given that none of the methods I've found are this simple, I thought I'd get the experts' opinion before I go ahead with this plan. More specifically, what I'm wondering about is - are there any glaring holes in this plan that I'm not seeing?

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  • How can I undo this key mapping?

    - by user273872
    First of all sorry my punctuation will be bad. its hard to type when keys are not doing what you expect. Eg it keeps scaring the **** out of me by taking a screen shot when I push the up arrow lolol So anyways, I broke a key on my keyboard and used xkeycaps to remap it to an unused key which worked. But then I realized it screwed up other keys... I think this is the program I used http://www.jwz.org/xkeycaps/man.html And then after doing the modifications I found out how to save them from the second answer in this question How to Map my enter key to a different key down where it says this "When you are happy with your current keymap and want to use it in future X-sessions, run the following command to save it: xmodmap -pke ~/.Xmodmap"

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  • Handling undo and edit flag on window with several model objects

    - by Rui Pacheco
    Hi, I've a window that will hold several instances of a model object, listed in a table. The model object is updated using a text view. What is the best way to keep the edit flag and undo manager in synch with the content of the different model objects? I'm thinking creating an instance of the undo manager on the model object and manually set the undo manager for the text view every time the user choses a new model object. Does the undo manager also handle the edited flag?

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  • how to implement undo operation in datagridview

    - by ush
    Hi, I have created one application in c#.net.Using this application we can update datagridview,now i need to implement undo in it plz give me some ideas. private void button29_Click(object sender, EventArgs e) { Datatable dt; dt.RejectChanges(); } using above code i can do undo before updating. but i need a undo feature as in word plz suggest me thanks in advance

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  • Core Data deleteObject: sets attributes to nil

    - by SG1
    I am implementing an undo/redo mechanism in my app. This works fine for lots of cases. However, I can't undo past deleteObject:. the object is correctly saved in the undo queue, and I get it back and reinsterted into the Core Data stack just fine when calling undo. The problem is that all it's attributes are getting set to nil when I delete it. I have an entity "Canvas" with a to-many relationship called "graphics" to a "Graphic" entity, which has its inverse set to "canvas". Deleting a Graphic, then inserting it back, doesn't work. Here's the code (the redo method is basically the same): - (void)deleteGraphic:(id)aGraphic { //NSLog(@"undo drawing"); //Prepare the undo/redo [self.undoManager beginUndoGrouping]; [self.undoManager setActionName:@"Delete Graphic"]; [[self.detailItem valueForKey:@"graphics"] removeObject:aGraphic]; [[self managedObjectContext] deleteObject:aGraphic]; //End undo/redo [self.undoManager registerUndoWithTarget:self selector:@selector(insertGraphic:) object:aGraphic]; [self.undoManager endUndoGrouping]; NSLog(@"graphics are %@", [self sortedGraphics]); //Update drawing [self.quartzView setNeedsDisplay]; } and here's the wierdness: Before delete: graphics are ( <NSManagedObject: 0x1cc3f0> (entity: Graphic; id: 0x1c05f0 <x-coredata:///Graphic/t840FE8AD-F2E7-4214-822F-7994FF93D4754> ; data: { canvas = 0x162b70 <x-coredata://A919979E-75AD-474D-9561-E0E8F3388718/Canvas/p20>; content = <62706c69 73743030 d4010203 04050609 0a582476 65727369 6f6e5424 746f7059 24617263 68697665 7258246f 626a6563 7473>; frameRect = nil; label = nil; order = 1; path = "(...not nil..)"; traits = "(...not nil..)"; type = Path; }) After redo: graphics are ( <NSManagedObject: 0x1cc3f0> (entity: Graphic; id: 0x1c05f0 <x-coredata:///Graphic/t840FE8AD-F2E7-4214-822F-7994FF93D4754> ; data: { canvas = nil; content = nil; frameRect = nil; label = nil; order = 0; path = nil; traits = nil; type = nil; }), You can see it's the same object, just totally bleached by Core Data. The relationship delete rouls apparently have nothing to do with it as I've set them to "No Action" in a test.

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  • InvalidOperationException: The Undo operation encountered a context that is different from what was

    - by McN
    I got the following exception: Exception Type: System.InvalidOperationException Exception Message: The Undo operation encountered a context that is different from what was applied in the corresponding Set operation. The possible cause is that a context was Set on the thread and not reverted(undone). Exception Stack: at System.Threading.SynchronizationContextSwitcher.Undo() at System.Threading.ExecutionContextSwitcher.Undo() at System.Threading.ExecutionContext.runFinallyCode(Object userData, Boolean exceptionThrown) at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteBackoutCodeHelper(Object backoutCode, Object userData, Boolean exceptionThrown) at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Net.ContextAwareResult.Complete(IntPtr userToken) at System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken) at System.Net.Sockets.BaseOverlappedAsyncResult.CompletionPortCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* nativeOverlapped) at System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* pOVERLAP) Exception Source: mscorlib Exception TargetSite.Name: Undo Exception HelpLink: The application is a Visual Studio 2005 (.Net 2.0) console application. It is a server for multiple TCP/IP connections, doing asynchronous socket reads and synchronous socket writes. In searching for an answer I came across this post which talks about a call to Application.Doevents() which I don't use in my code. I also found this post which has a resolution involved with Component which I also don't use in my code. The application does reference a library that I created that contains custom user controls and components, but they are not being used by the application. Question: What caused this to happen and how do I prevent this from happening again? Or a more realistic question: What does this exception actually mean? How is "context" defined in this situation? Anything that can help me understand what is going on would be very much appreciated.

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  • Undo/Redo Support for Table Changes in WPF RichTextBox

    - by Jeff
    As part of an editor project, I need to add functionality to the WPF RichTextBox control to allow the user to perform operations on a table. One of those operations is to apply a new width value to one or more columns of the table. I have a function that is applying a new Width value to the TableColumn objects in question, and the table is resizing itself nicely. However, I've noticed that the column-width change operation does not seem to be added to the undo stack. In other words, if a user types something, then changes a column width, then selects undo, the RichTextBox control undoes the user's typing. Undo and redo don't seem to be picking up the property change on the TableColumn object. Is there some way to make this operation occur in a way that it actually is undoable/redoable?

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  • Can I undo the last git push?

    - by Stray
    A team member accidentally pushed half a gig of unwanted zips to the remote repo last night when they were in a rush. Yes... oops. Nobody has pulled or committed since. Ideally I want to just 'undo' what happened. I have looked at filter-branch and was thinking of trying something like git filter-branch --tree-filter 'rm -f *.zip' HEAD but that would be local, and I can't figure out how to do it direct on the remote repo. Is there a simpler way to undo what happened? If she amends her last commit and pushes again will that undo the push - ie actually remove those files from the history? Obviously if she deletes them, commits and pushes again then that still leaves the content in the repo, which is no good.

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  • How to use DML on Oracle temporary table without generating much undo log

    - by Sambath
    Hi, Using an Oracle temporary table does not generate much redo log as a normal table. However, the undo log is still generated. Thus, how can I write insert, update, or delete statement on a temporary table but Oracle will not generate undo log or generate as little as possible? Moreover, using /+append/ in the insert statement will generate little undo log. Am I correct? If not, could anyone explain me about using the hint /+append/? INSERT /*+APPEND*/ INTO table1(...) VALUES(...); Thank you.

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  • how to rollback/undo yum update on fedora after messing the fedora versions

    - by misteryes
    I want to install texlive on my fedora 16 laptop with the following procedure: # yum remove tex-* texlive-* # cat > /etc/yum.repos.d/texlive.repo <<EOF [texlive] name=texlive baseurl=http://jnovy.fedorapeople.org/texlive/2012/packages.f17/ enabled=1 gpgcheck=0 EOF # yum update; # yum install texlive after yum update, I notice that my laptop is fedora 16, while I used 2012/packages.fc17/ so I modify /etc/yum.repos.d/texlive.repo to use 2011/packages.fc16 and do yum update again however, there are many errors [root@kitty esolve]# yum update Loaded plugins: auto-update-debuginfo, langpacks, presto, refresh-packagekit http://repos.fedorapeople.org/repos/leigh123linux/cinnamon/fedora-16/x86_64/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found : http://repos.fedorapeople.org/repos/leigh123linux/cinnamon/fedora-16/x86_64/repodata/repomd.xml Trying other mirror. Setting up Update Process Resolving Dependencies --> Running transaction check ---> Package dvipng.x86_64 0:1.14-1.fc15 will be obsoleted ---> Package kpathsea.x86_64 0:2007-66.fc16 will be obsoleted --> Processing Dependency: libkpathsea.so.4()(64bit) for package: evince-dvi-3.2.1-2.fc16.x86_64 ---> Package mkvtoolnix.x86_64 0:5.8.0-1 will be updated ---> Package mkvtoolnix.x86_64 0:6.3.0-1 will be an update ---> Package nautilus-dropbox.x86_64 0:1.4.0-1.fc10 will be updated ---> Package nautilus-dropbox.x86_64 0:1.6.0-1.fc10 will be an update ---> Package texlive-dvipng-bin.x86_64 2:svn26509.0-19.20130317_r29408.fc17 will be obsoleting --> Processing Dependency: texlive-kpathsea-lib = 2:2012-19.20130317_r29408.fc17 for package: 2:texlive-dvipng-bin-svn26509.0-19.20130317_r29408.fc17.x86_64 --> Processing Dependency: texlive-base for package: 2:texlive-dvipng-bin-svn26509.0-19.20130317_r29408.fc17.x86_64 --> Processing Dependency: tex-dvipng for package: 2:texlive-dvipng-bin-svn26509.0-19.20130317_r29408.fc17.x86_64 --> Processing Dependency: libpng15.so.15()(64bit) for package: 2:texlive-dvipng-bin-svn26509.0-19.20130317_r29408.fc17.x86_64 --> Processing Dependency: libkpathsea.so.6()(64bit) for package: 2:texlive-dvipng-bin-svn26509.0-19.20130317_r29408.fc17.x86_64 ---> Package texlive-kpathsea.noarch 2:svn28792.0-19.fc17 will be obsoleting --> Processing Dependency: texlive-kpathsea-bin for package: 2:texlive-kpathsea-svn28792.0-19.fc17.noarch --> Running transaction check ---> Package kpathsea.x86_64 0:2007-66.fc16 will be obsoleted --> Processing Dependency: libkpathsea.so.4()(64bit) for package: evince-dvi-3.2.1-2.fc16.x86_64 ---> Package texlive-base.noarch 2:2012-19.20130317_r29408.fc17 will be installed ---> Package texlive-dvipng.noarch 2:svn26689.1.14-19.fc17 will be installed ---> Package texlive-dvipng-bin.x86_64 2:svn26509.0-19.20130317_r29408.fc17 will be obsoleting --> Processing Dependency: libpng15.so.15()(64bit) for package: 2:texlive-dvipng-bin-svn26509.0-19.20130317_r29408.fc17.x86_64 ---> Package texlive-kpathsea-bin.x86_64 2:svn27347.0-19.20130317_r29408.fc17 will be installed ---> Package texlive-kpathsea-lib.x86_64 2:2012-19.20130317_r29408.fc17 will be installed --> Finished Dependency Resolution Error: Package: evince-dvi-3.2.1-2.fc16.x86_64 (@fedora) Requires: libkpathsea.so.4()(64bit) Removing: kpathsea-2007-66.fc16.x86_64 (@so-updates) libkpathsea.so.4()(64bit) Obsoleted By: 2:texlive-kpathsea-svn28792.0-19.fc17.noarch (texlive) Not found Error: Package: 2:texlive-dvipng-bin-svn26509.0-19.20130317_r29408.fc17.x86_64 (texlive) Requires: libpng15.so.15()(64bit) You could try using --skip-broken to work around the problem You could try running: rpm -Va --nofiles --nodigest and when I do yum install texlive, it simply tries to install the f17 version, which failed. what Can I do to install f16 version? how can I undo yum update with 2012/packages.f17/ I tried yum history, and for today's history, I only have Loaded plugins: auto-update-debuginfo, langpacks, presto, refresh-packagekit ID | Login user | Date and time | Action(s) | Altered ------------------------------------------------------------------------------- 124 | esolve ... <esolve> | 2013-09-12 18:35 | Erase | 24 123 | root <root> | 2013-08-23 11:08 | Update | 1 122 | root <root> | 2013-08-21 14:13 | Update | 1 < 121 | esolve ... <esolve> | 2013-05-31 15:36 | Install | 1 > 120 | root <root> | 2013-05-29 15:13 | Install | 1 < 119 | root <root> | 2013-04-18 13:13 | Update | 1 >< which seems not related to yum update the history results: 1003 yum update 1004 vim 1005 vim /etc/yum.repos.d/texlive.repo 1006 yum update 1007 yum install texlive 1008 vim /etc/yum.repos.d/texlive.repo 1009 clear 1010 yum history 1011 yum history list 1012 vim 1013 vim /etc/yum.repos.d/texlive.repo 1014 yum history list 1015 history also I tried yum history undo 124 but it failed! [root@kitty esolve]# yum history undo 124 Loaded plugins: auto-update-debuginfo, langpacks, presto, refresh-packagekit http://repos.fedorapeople.org/repos/leigh123linux/cinnamon/fedora-16/x86_64/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found : http://repos.fedorapeople.org/repos/leigh123linux/cinnamon/fedora-16/x86_64/repodata/repomd.xml Trying other mirror. Undoing transaction 124, from Thu Sep 12 18:35:31 2013 Erase R-2.14.1-1.fc16.x86_64 ? Erase R-core-2.14.1-1.fc16.x86_64 ? Erase R-devel-2.14.1-1.fc16.x86_64 ? Erase a2ps-4.14-12.fc15.x86_64 ? Erase docbook-utils-pdf-0.6.14-29.fc16.noarch ? Erase html2ps-1.0-0.7.b7.fc15.noarch ? Erase jadetex-3.13-10.fc15.noarch ? Erase kile-2.1.1-1.fc16.x86_64 ? Erase linuxdoc-tools-0.9.66-9.fc15.x86_64 ? Erase tetex-dvipost-1.1-12.fc15.x86_64 ? Erase tex-cm-lgc-0.5-18.fc15.noarch ? Erase tex-preview-11.86-6.fc16.noarch ? Erase texinfo-tex-4.13a-15.fc15.x86_64 ? Erase texlive-2007-66.fc16.x86_64 ? Erase texlive-dvips-2007-66.fc16.x86_64 ? Erase texlive-latex-2007-66.fc16.x86_64 ? Erase texlive-texmf-2007-40.fc16.noarch ? Erase texlive-texmf-dvips-2007-40.fc16.noarch ? Erase texlive-texmf-fonts-2007-40.fc16.noarch ? Erase texlive-texmf-latex-2007-40.fc16.noarch ? Erase texlive-utils-2007-66.fc16.x86_64 ? Erase texmaker-1:3.2.2-1.fc16.x86_64 ? Erase texmf-RR-Inria-4.11-inria.0.noarch ? Erase xdvik-22.84.14-9.fc15.x86_64 ? Error: No package(s) available to install

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  • undo moving of a folder in Windows

    - by Tony_Henrich
    There are times when instead of scrolling vertically in file explorer I accidentally move a folder to within another folder. Great! It happens so quick I don't know which folder was moved and this means I just screwed up an application installation. Is there a way to undo this operation? Or someway to disable moving of folders by default? Using Windows 7.

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  • Undo clicking chrome never save password on the mac

    - by IlDan
    Sometimes you may want to undo your choice of "Never for this site" when Chrome asks if you want to save a password. But on the mac clicking on the "Show saved passwords" in the Preferences opens the Keychain Access app and you have no way to remove that site from the exceptions list. This is obviously a bug. I suppose that deleting all saved passwords will do but I don't want to delete them all. Is there any other workaround? (Chrome 6.0.472.63)

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  • NSUndoManager with Core Data - Redo not working

    - by CJ
    I have a Core Data document-based app which support undo/redo via the built-in NSUndoManager associated with the NSManagedObjectContext. I have a few actions set up which perform numerous tasks within Core Data, wrap all these tasks into an undo group via beginUndoGrouping/endUndoGrouping, and are processed by the NSUndoManager. Undo works fine. I can perform several successive actions, and each then undo each one of them successively and my app's state is maintained correctly. However, the "Redo" menu item is never enabled. This means that the NSUndoManager is telling the menu that there are no items to redo. I am wondering why the NSUndoManager is seemingly forgetting about items once they are undone, and not allowing redos to occur? One thing I should mention is that I'm disabling undo registration after a document is opened/created. When I perform an action, I call enableUndoRegistration, beginUndoGrouping, perform the action, then call processPendingChanges, setActionName:, endUndoGrouping, and finally disableUndoRegistration. This makes sure that only specific actions are undoable, and any other data changes I make outside of these go unnoticed to the NSUndoManager. This may be a part of the issue, but if so I'm wondering why it's affecting redo? Thanks in advance.

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  • NSManagedObject relationship undo

    - by Reflog
    I have a NSManagedObject ObjA that has a many-to-many relationship with another NSManagedObject ObjB. I initialize it with [NSEntityDescription insertNewObjectForEntityForName:@"ObjA" inManagedObjectContext:app.context]; When I perform undo without performing save - the object is not added to the persistent store. But - when I add an item to the collection inside ObjA and then perform undo - the ObjA is not added, but ObjB is not, it's still lingering in the persisten store for some reason. Any ideas what am I doing wrong?

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