iLessons iLearned: javaScript

Thursday, February 25, 2010

How to Disable UIWebView Selection

You could do this by running a short javaScript line at webViewDidFinishLoad, but I find this more elegant: define UIWebView properties in CSS.

NSString *myHtml = [NSString stringWithFormat:
   @"<html><head>"
   "<style type=\"text/css\">"
   // Disable Open/Copy/Cancel alert with long link selection
   "* {"
   "-webkit-touch-callout: none;"
   // Disable selection/Copy of UIWebView
   "-webkit-user-select: none;"
   "}"
   ",</style>"
   "</head><body>%@</body></html>", message.body];
[myWebView loadHTMLString:myHtml baseURL:nil];

As a bonus I left there also how to disable link selection popup.

Wednesday, February 10, 2010

How to Make UIWebView Open target="_blank" Links

There are several ways to do this, here's mine.

NSString *js = @"\
var a = document.getElementsByTagName('a');\
for (var i=0; i<a.length; i++) {\
    a[i].removeAttribute('target');\
}\
";
[self.myWebView stringByEvaluatingJavaScriptFromString:js];

Possible advantage: reduces size of HTML document.