several questions about saving a bundle in an NSDocument based application
several questions about saving a bundle in an NSDocument based application
- Subject: several questions about saving a bundle in an NSDocument based application
- From: Matthew Jeorrett <email@hidden>
- Date: Tue, 2 Jun 2009 01:40:40 +0000
- Importance: Normal
Hi,
I have successfully implemented the NSDocument architecture in my application and have implemented saving and loading documents by overriding the "dataOfType:error:" and "readFromData:ofType:error:"; methods. I now want to be able to export my document into a folder selected by the user. The items I will be putting in the folder are a few png images and a plain text file. I have created a new package document type in the build target properties with the role value set as none. The first gap in my knowledge is what the store type should be?
I am guessing that I should override the fileWrapperOfType:error: method so that if the type is "document package" I call a method to create a directory file wrapper with the images and text files I want instead of the default behaviour which is to create a file type NSFileWrapper with the data from the "dataOfType:error:" method. I assume that the save panel will have asked the user for a directory as the document type is a package.
Finally, assuming my approach so far is correct, my last problem is I am unsure of how to add PNG images and a text file to the wrapper. The images are stored as CGImageRefs and the text is in an NSString.
If anyone can clear any of this or maybe even all of this up or point me in the direction of an example I would be much obliged.
Cheers
M.J.
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