setting regExpValidator for TextInput in QMl is not working

[RJ]

HI,
I just want to set a hexadecimal validator for my TextInput field in the qml, but somehow it is not validating. Instead of regExpValidator if i use intValidator it works. but I need to have a hexadecimal validator. again if i use Inputmask , it works but I need to specify the no of characters which I cant becuase I need to have it as unlimited.
here is the code sample:

TextInput{
                       id:display
                       text:some value from cpp
                       font.pixelSize: 16
                       width:parent.width-30
                       focus:true
                       font.bold: true
                       validator: RegExpValidator{regExp: /[0-9A-F]/}    // not at all validated
                       inputMask: ">HHHHHH"                                    // input mask limited for the 6 characters
                       anchors.fill:parent.Center
                       anchors {
                           left: parent.left;
                          verticalCenter: parent.verticalCenter; 
                          verticalCenterOffset: -1
                           leftMargin: 5;
                       }
                   }

TextInput{
                       id:display
                       text:some value from cpp
                       font.pixelSize: 16
                       width:parent.width-30
                       focus:true
                       font.bold: true
                       validator: RegExpValidator{regExp: /[0-9A-F]/}    // not at all validated
                       inputMask: ">HHHHHH"                                    // input mask limited for the 6 characters
                       anchors.fill:parent.Center
                       anchors {
                           left: parent.left;
                          verticalCenter: parent.verticalCenter; 
                          verticalCenterOffset: -1
                           leftMargin: 5;
                       }
                   }

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please help if any body has any idea.
Thanks in advance

[wysota]

It seems your regular expression only allows a single digit. Try /[0-9A-F]+/ instead.

[RJ]

Hi wysota,
thanks for your reply, but validation is not at all happening.
not for a single digit too. other validators are working fine. I am displaying the default text inside my TextInput and this is also getting validated before displaying when i use some other validators like intvalidator but in case of regExpValidator, it's not doing any kind of validation.

[wysota]

Hi wysota,
thanks for your reply, but validation is not at all happening.
not for a single digit too. other validators are working fine.

This works fine for me:

import QtQuick 2.0
 
Rectangle {
  width: 600
  height: 300
 
  TextInput {
    focus: true
    anchors.fill: parent
    validator: RegExpValidator { regExp: /[0-9A-F]+/ }
  }
}

import QtQuick 2.0

Rectangle {
  width: 600
  height: 300

  TextInput {
    focus: true
    anchors.fill: parent
    validator: RegExpValidator { regExp: /[0-9A-F]+/ }
  }
}

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[RJ]

thanks....its working fine
but the problem is I am setting the text property with some older value which is not a valid input, then this should not display that but it is displaying. do you have any idea why?

[wysota]

but the problem is I am setting the text property with some older value which is not a valid input, then this should not display that but it is displaying. do you have any idea why?

Validator works on user input, not on a text set programatically.

[RJ]

ok thanks wysota

[RJ]

i have one more problem with this Validator.
I want to change the validator regular exp by using state change. its able to set the other properties based on the states but not validator.

TextInput
                  {
                       id:qVirtualKeyboardTextInput
                       validator: RegExpValidator { regExp: /[0-9A-Fa-f.-]+/ }
                       text:EditText
}
states:[
                      State
                      {
                           name:binaryvalidator
                           when: binaryIOField ==true && decimalIOField=== false
                           PropertyChanges  {
                               target: TextInput;
                               validator: IntValidator{bottom:0; top:1} // not working , tried with regExp alsio :(
                           }
 
                      },
                      State
                      {
                           name:decimalvalidator === true
                           when: decimalIOField
                           PropertyChanges {
                               target: TextInput;
                               //validator: IntValidator{bottom:0; top:9}
                               inputMask:"9" // able to set the input mask but not validator
                           }
 
                      }
                      ]

TextInput
                  {
                       id:qVirtualKeyboardTextInput
                       validator: RegExpValidator { regExp: /[0-9A-Fa-f.-]+/ }
                       text:EditText
}
states:[
                      State
                      {
                           name:binaryvalidator
                           when: binaryIOField ==true && decimalIOField=== false
                           PropertyChanges  {
                               target: TextInput;
                               validator: IntValidator{bottom:0; top:1} // not working , tried with regExp alsio :(
                           }

                      },
                      State
                      {
                           name:decimalvalidator === true
                           when: decimalIOField
                           PropertyChanges {
                               target: TextInput;
                               //validator: IntValidator{bottom:0; top:9}
                               inputMask:"9" // able to set the input mask but not validator
                           }

                      }
                      ]

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can any body tell me why it is not taking. i am getting the error that "component is not ready"

[wysota]

Define all validators you need and only switch which is currently used.

... {
  IntValidator { id: intValidator; ... }
  RegExpValidator { id: regexpValidator; ... }
 
  TextInput {
    validator: useIntValidator ? intValidator : regexpValidator // you can do the same with PropertyChanges
  }
}

... {
  IntValidator { id: intValidator; ... }
  RegExpValidator { id: regexpValidator; ... }

  TextInput {
    validator: useIntValidator ? intValidator : regexpValidator // you can do the same with PropertyChanges
  }
}

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[RJ]

hi,
thanks for the reply..I think , I need to use PropertyChanges only because I have more than 3 conditions and I can not use ternary operator for that. Let me try, if it works for me or not.

[RJ]

hi wysota,
its working fine with the propertychanges also. only one issue is there. by default my textinput has selected value(displaying it in a highlighted mode). so for the first time input it doesn't go for the validation. If I use the backspace to empty the input field and then if try to give some value to the input field , it goes for the validation and works perfectly. why is it so? any idea?
Thanks in advance

[wysota]

I have already told you -- the validator only work on user input, not on content that is already set in the item.

[RJ]

its working fine
this problem comes only when you have wrong invalidated input value in your input field. I f you have the correctly validated value then it doesn't allow the wrong inputs. Thanks a lot
makin it as a Solved thread now.

hi wysota,
its working fine with the propertychanges also. only one issue is there. by default my textinput has selected value(displaying it in a highlighted mode). so for the first time input it doesn't go for the validation. If I use the backspace to empty the input field and then if try to give some value to the input field , it goes for the validation and works perfectly. why is it so? any idea?
Thanks in advance