Ответ 1
Вам необходимо реализовать различные методы протокола WebScripting. Вот пример:
@interface WebController : NSObject
{
IBOutlet WebView* webView;
}
@end
@implementation WebController
//this returns a nice name for the method in the JavaScript environment
+(NSString*)webScriptNameForSelector:(SEL)sel
{
if(sel == @selector(logJavaScriptString:))
return @"log";
return nil;
}
//this allows JavaScript to call the -logJavaScriptString: method
+ (BOOL)isSelectorExcludedFromWebScript:(SEL)sel
{
if(sel == @selector(logJavaScriptString:))
return NO;
return YES;
}
//called when the nib objects are available, so do initial setup
- (void)awakeFromNib
{
//set this class as the web view frame load delegate
//we will then be notified when the scripting environment
//becomes available in the page
[webView setFrameLoadDelegate:self];
//load a file called 'page.html' from the app bundle into the WebView
NSString* pagePath = [[NSBundle mainBundle] pathForResource:@"page" ofType:@"html"];
NSURL* pageURL = [NSURL fileURLWithPath:pagePath];
[[webView mainFrame] loadRequest:[NSURLRequest requestWithURL:pageURL]];
}
//this is a simple log command
- (void)logJavaScriptString:(NSString*) logText
{
NSLog(@"JavaScript: %@",logText);
}
//this is called as soon as the script environment is ready in the webview
- (void)webView:(WebView *)sender didClearWindowObject:(WebScriptObject *)windowScriptObject forFrame:(WebFrame *)frame
{
//add the controller to the script environment
//the "Cocoa" object will now be available to JavaScript
[windowScriptObject setValue:self forKey:@"Cocoa"];
}
@end
После реализации этого кода в контроллере вы можете вызвать Cocoa.log('foo'); из среды JavaScript, и будет вызван метод logJavaScriptString:.