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 < 0) tempX = 0;
	if (tempY < 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 );
}