[jbosstools-issues] [JBoss JIRA] Created: (JBIDE-4300) Can't unset attribute value

[Xue Peng (JIRA)]

Can't unset attribute value
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                 Key: JBIDE-4300
                 URL: https://jira.jboss.org/jira/browse/JBIDE-4300
             Project: Tools (JBoss Tools)
          Issue Type: Bug
          Components: smooks
    Affects Versions: 3.1.0.M1
            Reporter: Xue Peng
            Assignee: Xue Peng


User can't unset attribute value. 
Attribute field editor should add those functions:
1.For text field editor , when input "null" string on attribute field editor , remove this attribute value.
2.For combo field editor , add a blank option in the combo box , when user select the blank option , remove this atribute value.

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