IE we can't convert Numbered list to a Bulleted list and vice versa

[Satya Minnekanti]

To reproduce the defect

1. Open CK Editor and type 2 paragraphs of text.

2. select 2 paragraphs and click on Insert/Remove Numbered list button

3. see that a Numbered list appears with 2 list items.

4. Now select both list items and click on Insert/Remove Bulleted list button.

Expected Result:

Numbered list is converted to a Bulleted list.

Actual Result:

Nothing happens and we are seeing an error in IE and error says 'this.$currentStyle' is null or not an object.

same issue occurs when we try to convert a Bulleted list to a Numbered list.

[Sa'ar Zac Elias]

Regression of [6478].

[Sa'ar Zac Elias]

IE will generate an error when getting current styles from elements that are yet to be in the DOM tree.

[Sa'ar Zac Elias]

#7303 is a dup.

[Garry Yao]

"currentStyle" is not a cross-browser property.

[Sa'ar Zac Elias]

Seems like the problem affects non-IEs as well in a different way, the latest patch fixes issues described in #7320, #7319.

[Garry Yao]

Instead of having "isInDoc( el, doc )" I think we could safely have "isOffline( el )".

[Sa'ar Zac Elias]

Fixed with [6551].