Flex textArea删除/替换无效的小方块 [英] Flex textArea remove/replace invalid little squares

问题描述

这与我之前的Flex问题有关：

Flex TextArea - 从Word复制/粘贴 - xml解析中的unicode字符无效

不过，这个略有不同。似乎是问题。所以我不得不为此创建另一个线程。

当我从文本复制/粘贴文本到文本区域时，我看不到任何无效的字符。但是，当我粘贴在这个网址相同的文字：

http://blog.flexexamples.com/2008/03/07/preventing-line-feeds-in-a-textarea -control-in-flex /

我看到一个小方块。请将此文本粘贴到URL中：

 将两个应用程序之间的用户基础同步。 
 
 2.需求
  

和你应该可以看到一样的。现在我想删除这个无效的字符/符号。有没有办法做到这一点。我认为这是我的xml解析器问题。
$ b

谢谢

  if（event.operation is PasteOperation）
 {
 event.preventDefault（）; 
 var txt：String = Clipboard.generalClipboard.getData（ClipboardFormats.TEXT_FORMAT）。 
 toString（）。replace（/ [^ A-Za-z0-9 \s $％& *！@ -_（）。] / ig，）; 
 ...... 
} 
  

This is related to my previous Flex issue:

Flex TextArea - copy/paste from Word - Invalid unicode characters on xml parsing

But this is slightly different & seems to be the issue. So I had to create another thread for this.

When I copy/paste text from word to a text area, I do not see any invalid characters. But when I pasted the same text on this url:

http://blog.flexexamples.com/2008/03/07/preventing-line-feeds-in-a-textarea-control-in-flex/

I'm seeing a little square " ". Please paste this text into the URL:

Bring the user base between the two applications into sync.
 
2.    Requirements

and you should be able to see the same. Now I want to remove this invalid character/symbol. Is there any way to do it. I think this is the problem for my xml parser issue.

Thanks

解决方案

I was able to handle it by using the textArea changingHandler to allow only certain characters:

    if (event.operation is PasteOperation)
        {
            event.preventDefault();
            var txt:String = Clipboard.generalClipboard.getData(ClipboardFormats.TEXT_FORMAT).
                            toString().replace(/[^A-Za-z0-9\s$%&*!@-_().]/ig, "");
                 ......
        }

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