Codec ░ Getting Javascript Properties from Objective-C

141Getting Javascript Properties from Objective-C

Access Javascript properties from Objective-C...

NSString *href = [[webView windowScriptObject] evaluateWebScript:@"location.href"];

http://developer.apple.com/documentation/Cocoa/Conceptual/DisplayWebContent/Tasks/JavaScriptFromObjC.html

... and forwarding it to Quartz Composer: [quarrzComposerView setValue:href forInputKey:@"location"];

HTML <html> <head> <script language="JavaScript1.2">


document.captureEvents(Event.MOUSEMOVE);
document.onmousemove = getMouseXY;
var tempX = 0;
var tempY = 0;
function getMouseXY(e) {
tempX = e.pageX;
tempY = e.pageY;
if (tempX &lt; 0) tempX = 0;
if (tempY &lt; 0) tempY = 0;  

document.Show.MouseX.value = tempX;
document.Show.MouseY.value = tempY;

console.log();
return true;
}
function getKey() {
document.Show.keyOutput.value = document.Show.keyInput.value;
keyconsole.key();
return true;
}
</script>
<style>
d {
//display: none;
//background: #f00;

} </style> </head> <body> <form name="Show" id="d"> X <input type="text" name="MouseX" value="0" size="4"><br> Y <input type="text" name="MouseY" value="0" size="4"><br> KeyInput <input type="text" name="keyInput" size="4" onChange="getKey()" ><br> KeyOutput<input type="text" name="keyOutput" size="4"><br> </form> </body> </html>

Obj-C - (void)webView:(WebView )sender didClearWindowObject:(WebScriptObject )windowScriptObject forFrame:(WebFrame *)frame { [windowScriptObject setValue:self forKey:@"console"]; [windowScriptObject setValue:self forKey:@"keyconsole"]; }


/*
// deprechiated


(void)webView:(WebView )webView windowScriptObjectAvailable:(WebScriptObject )windowScriptObject {
[windowScriptObject setValue:self forKey:@"console"];
[windowScriptObject setValue:self forKey:@"keyconsole"];
}
*/


(BOOL)isSelectorExcludedFromWebScript:(SEL)selector {
if (selector == @selector(doOutputToLog:) ) {
return NO;
} else if (selector == @selector(doOutputToKey:) ) {
return NO;
}
return YES;


}



(NSString *) webScriptNameForSelector:(SEL)sel {
if (sel == @selector(doOutputToLog:)) {
return @"log";
} else if (sel == @selector(doOutputToKey:)) {
return @"key";
} else {
return nil;
}
}


(void) doOutputToLog: (NSString*) theMessage {
int mx = [ [[theWebView windowScriptObject] evaluateWebScript:@"document.Show.MouseX.value"] intValue];
int my = [ [[theWebView windowScriptObject] evaluateWebScript:@"document.Show.MouseY.value"] intValue];
NSLog(@"%i, %i", mx, my );
}

(void) doOutputToKey: (NSString*) theMessage { key = [[theWebView windowScriptObject] evaluateWebScript:@"document.Show.keyOutput.value"]; NSLog(@"%@", key ); }