QML Text Handling and Validators

Validating Input Text

The validator elements enforce the type and format of TextInput objects.

 Column {
     spacing: 10

     Text {
         text: "Enter a value from 0 to 2000"
     }
     TextInput {
         focus: true
         validator: IntValidator { bottom:0; top: 2000}
     }
 }

The validator elements bind to TextInput's validator property.

 Column {
     spacing: 10

     Text {
         text: "Which basket?"
     }
     TextInput {
         focus: true
         validator: RegExpValidator { regExp: /fruit basket/ }
     }
 }

The regular expression in the snippet will only allow the inputted text to be fruit basket.

Note that QML parses JavaScript regular expressions, while Qt's QRegExp class' regular expressions are based on Perl regular expressions.