[TYPO3-core] FYI: Fixed bug #4121: Pasting content on htmlArea RTE moves cursor to the top of the text

[Stanislas Rolland]

FYI: The attached SVN patch was committed.

Type:
Bugfix

Problem:
When content is pasted in the RTE and the html cleaning feature is 
enabled (enableWordClean = 1) and the use of the TYPO3 html parser is 
configured (enableWordClean.HTMLparser = 1), the resulting content of 
the RTE is sent to the server to be parsed and cleaned. On reception of 
the response, the editing area of the RTE is reset with the cleaned 
content. In this process, the cursor position is completety lost.

Solution:
The attached patch inserts in the content a bookmark that will keep the 
position of the cursor. In gecko browsers, the bookmark takes the form 
of a span element with a random id, a style attribute with display set 
to none, and a custom attribute named HTMLArea_bookmark set to true. On 
reception of the response, if the span element was not washed away by 
the html parser, the cursor is restored to its original position and the 
bookmark is removed. Tested in Mozilla 1.7, FF2, FF3, IE7, Safari3 and 
Opera9.5.

Bugtracker references:
http://bugs.typo3.org/view.php?id=4121

Branch:
TYPO3_4-2

Regards,
Stanislas


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