Hi folks, I'm trying to implement a simple object bridge in cocoa where the bridge object acts as a kvo/bindings-compliant drop in for some arbitrary other NSObject-instance.
Here is my problem (more details in the attached code): A Bridge object acts as a drop in for a Person-Object, with an NSString* property called name and an Address* property address. Binding to the keyPath "name" or "address" of the Bridge works nicely. Trouble starts when binding some object to the keyPath "address.street" of the bridge and a new Address-Object is set for Person's address property. That results in KVO-related exceptions that look like this: * Cannot remove an observer <NSKeyValueObservance 0x126b00> for the key path "street" * from <Address 0x12f1d0> because it is not registered as an observer This happens even though the bridge notices the change in the "address"-Property and emits a willChangeValueForKeyPath/didChangeValueForKeyPath tuple. The attached code produces the the problem. The file contains a main-function can be compiled and run with * gcc -o test BridgeDemo.m -framework AppKit -framework Foundation; ./test If you know a solution to this problem or can offer me a better approach solving the same problem you make me a very happy programmer. Greets Seb
BridgeDemo.m
Description: Binary data
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