Call Function When WebView Changes - objective-c

Question

So, I've been looking at the documentation and Googling, but I can't figure out how to call a method when my WebView (OSX, not iOS), changes... All the examples seem to be for iOS. My code looks like this:
SNAFAppDelegate.h
#import <Cocoa/Cocoa.h>
#import <WebKit/WebKit.h>
#interface SNAFAppDelegate : NSObject <NSApplicationDelegate>
#property (assign) IBOutlet NSWindow *window;
#property (assign) IBOutlet WebView *browser;
- (IBAction)forwards:(id)sender;
#end
SNAFAppDelegate.m
#import "SNAFAppDelegate.h"
#implementation SNAFAppDelegate
#synthesize window = _window;
#synthesize browser = _b;
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
[[_b mainFrame] loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:#"https://google.com"]]];
}
#end
SNAFBrowser.h
#import <Cocoa/Cocoa.h>
#import <WebKit/WebView.h>
#import <WebKit/WebFrame.h>
#import <WebKit/WebEditingDelegate.h>
#import <WebKit/WebKit.h>
#interface SNAFBrowser : WebView
#property (assign) IBOutlet WebView *browser;
#end
SNAFBrowser.m
#import "SNAFBrowser.h"
#implementation SNAFBrowser
#synthesize browser = _b;
- (void)webViewDidChange:(NSNotification *)notification
{
NSLog(#"Hello World");
}
#end
Then, in my MainMenu.xib file, I linked the Outlet "browser" from the AppDelegate to the WebView and set the WebView's custom class to SNAFBrowser.
Essentially, I just want to know when the webview loads another page.
I'm probably doing something ridiculously stupid, so any help is appreciated.

Answer 1

Implement the WebFrameLoadDelegate protocol, and see which methods are suitable to implement, for example webView:didFinishLoadForFrame:.
Example:
#interface SNAFBrowser : WebView <WebFrameLoadDelegate>
...
#end
#implementation SNAFBrowser
- (void)webView:(WebView *)sender didFinishLoadForFrame:(WebFrame *)frame
{
NSLog(#"Something got loaded!");
}
...
#end