Internet Explorer will not run blank javascript function as per documentation

[KevenD]

As per: ​http://docs.cksource.com/CKEditor_3.x/Developers_Guide/File_Browser_%28Uploader%29/Custom_File_Browser#Example_4

Example 4 works fine in all browsers I have tested except IE. Both IE 8 and 9 will not run the additional javascript called, returning only the URL of the image.

[KevenD]

Same page on IE (left) and Chrome (right) the browse server calls the same page which returns different results on IE than other browsers.

[KevenD]

Code on custom BROWSE SERVER as follows:

<script>
window.opener.CKEDITOR.tools.callFunction( <%=CKEditorFuncNum%>,'http://bcalpine.com/news/ads/P2P2009.gif', function() {
  // Get the reference to a dialog window.
  var element, dialog = this.getDialog();
  // Check if this is the Image dialog window.
  if (dialog.getName() == 'image') {
    // Get the reference to a text field that holds the "alt" attribute.
    element = dialog.getContentElement( 'info', 'txtAlt' );
    // Assign the new value.
    if ( element )
      element.setValue( 'this value' );
	  
    element = dialog.getContentElement( 'info', 'txtBorder' );
    // Assign the new value.
    if ( element )
      element.setValue( '2' );
	  
    element = dialog.getContentElement( 'info', 'txtHSpace' );
    // Assign the new value.
    if ( element )
      element.setValue( '3' );
	  
    element = dialog.getContentElement( 'info', 'txtVSpace' );
    // Assign the new value.
    if ( element )
      element.setValue( '4' );

    element = dialog.getContentElement( 'Link', 'txtUrl' );
    // Assign the new value.
    if ( element )
      element.setValue( 'http://bcalpine.com/news/' );
  }
  // Return false to stop further execution - in such case CKEditor will ignore the second argument (fileUrl)
  // and the onSelect function assigned to a button that called the file browser (if defined).
//  return false;
});
window.close();
</script>

[KevenD]

Additional testing included replacing the entire blank function with function() {alert('TEST')} which fired on all browsers EXCEPT internet explorer on any version.

[wwalc]

Confirmed. In IE, when passing a function as an argument from a popup window, typeof returns object instead of a function in the following line: ​line 375

A different method of checking whether variable is a function is needed here.

[z.kwiecinski]

Hi. When run ckeditor from source code, its work fine (tested in IE6). In ie6 function typeof is non-deterministic.

I replace problematic condition with test exist function call: if (data.call && ...

Its work in IE6 and Fireofx 3.6, other browser hasn't tested.

[Anna]

This is also discussed on the community forum: ​http://cksource.com/forums/viewtopic.php?f=11&t=23539

[katyp]

I am attempting to fix this locally for myself as I was the person bothering the community forum. I am not getting any different results with z.kwiecinski's check in IE9. Sorry if this is the wrong place to contribute.

[melker]

In Explorer the type seems to be changed from function to object during cross-page call to callFunction.

The local method gives "function" and the remote methods ckeditors code gives "object".

The following is tested using todays trunk.

In my own filebrowser code:

function testTypeOf(x) {
	alert ("local typeOf: " + typeof x);
	alert ("local typeOf arg: " + typeof arguments[0]);
}

...
var f = function() { 
  alert("Inside function"); 
}
testTypeOf(f);
window.opener.CKEDITOR.tools.testTypeOf(f);
window.opener.CKEDITOR.tools.callFunction( ckEditFuncNum, url, f);

modified code in core/tools.js

...
	testTypeOf : function ( x ) {
		alert ("remote typeOf: " + typeof x);
		alert ("remote typeOf arg: " + typeof arguments[0]);
	},

	callFunction : function( ref ) {
		if (ref == 2) alert("IN callFunction:" + ref + " arg0=" + arguments[0] + " arg1=" + arguments[1] + " arg2=" + arguments[2] + " Targ0=" + typeof arguments[0] + " Targ1=" + typeof arguments[1] + " Targ2=" + typeof arguments[2]);

		var fn = functions[ ref ];
		return fn && fn.apply( window, Array.prototype.slice.call( arguments, 1 ) );
	},
...

Seems like other have the same problem: ​http://stackoverflow.com/questions/10499623/cant-pass-a-function-from-one-window-to-another-in-ie?rq=1

Their solution is to check:

if ( data && data.call ...

instead of

if ( typeof data == 'function' ...