Run javascript if provided upon webview load

Author: EricSiegNW

APCAppCore/APCAppCore/UI/Onboarding/APCWebViewController.h

@@ -39,6 +39,7 @@
 @property (weak, nonatomic) IBOutlet UIToolbar *webToolBar;
 
 @property (nonatomic, strong) NSString *link;
+@property (nonatomic, strong) NSString *javascriptCallOnLoad;
 
 - (IBAction)close:(id)sender;
 

APCAppCore/APCAppCore/UI/Onboarding/APCWebViewController.m

@@ -79,6 +79,11 @@ - (void)webViewDidStartLoad:(UIWebView *)__unused webView
 
 - (void)webViewDidFinishLoad:(UIWebView *)__unused webView
 {
+    if (self.javascriptCallOnLoad != nil) {
+        // Some windows might to make a javascript call when loaded. For example, to
+        // validate with the sessionToken in order to load the webpage.
+        [self.webView stringByEvaluatingJavaScriptFromString:self.javascriptCallOnLoad];
+    }
     [self updateToolbarButtons];
 }