[SOLVED] How to Restrict Unwanted Characters from String List Using QRegExp ?

Macro

Hi...

I am having a QLineEdit and a QStringList. My String List contains "AJ", "BK", "CL", "DM" strings in it. Now, i need to check for the first character of the String List items, if it Accepts then Allow it to enter in the QLineEdit else it should be Restricted, same way i need to check for the second character if it accepts then Allow it, else Restrict. Using QRegExp how can i make this?? I tried to include my StringList in my QRegExp. But no use... :(

Thanks & Regards..

Hostel

Read about QRegExpValidator which you can set to QLineEdit.

Macro

I know abt QRegExpValidator and i know how to set it.... But for this case, i don't know how to set the validator for this.... Anyways, thanks for your suggestion...

Thanks & Regards..

Hostel

So you want to allow user to input in QLineEdit only values like: “AJ”, “BK”, “CL”, “DM”?

Macro

Yes.. For the First Time the Line Edit should Accept only A, B, C & D.. it should Reject J, K, L & M and other Alphabets Like E, F, G, H, I, O, P, Q, R, S....Z

Thanks & Regards...

Hostel

@
QRegExpValidator* validator = new QRegExpValidator( QRegExp( "AJ|BK|CL|DM" ) );
lineEdit->setValidator( validator );
@

Macro

Thanks for your Suggestion... but this will not work in my case... The string list values may contain different set of items.. First it may contain like which i had mentioned above. the next time it may contain a different set of string items... so what should i do in that case???

Hostel

You should read a QStringList doc ;)
@
QStringList sl;
sl << "AJ" << "BK" << "CL" << "DM";

QRegExpValidator* validator = new QRegExpValidator( QRegExp( sl.join( "|" ) ) );
lineEdit->setValidator( validator );

@

slinavipuz

[quote author="Rochi" date="1361138440"]Thanks for your Suggestion... but this will not work in my case... The string list values may contain different set of items.. First it may contain like which i had mentioned above. the next time it may contain a different set of string items... so what should i do in that case??? [/quote]

Is there any rule that will tell you how that set will change?

ChrisW67

Sounds like a job for a restricted QComboBox rather than a free text editor.

Macro

[quote author="slinavipuz" date="1361141106"]
Is there any rule that will tell you how that set will change?[/quote]

Yes..... I have a method called stringListType() in that if i pass any of the StringList then it will take will take the corresponding StringList items......

EDIT : Then i have to restrict the characters which are not in the StringList Items.......

Macro

[quote author="ChrisW67" date="1361141581"]Sounds like a job for a restricted QComboBox rather than a free text editor.
[/quote]

Yup, but not completely... for a free text editior we can use a QCompleter for getting the Suggestions of the StringList Items. But in this case, i have to restrict the other characters except the characters of the StringList

Macro

Whooooo..... Finally i had solved it by myself..... I had pasted the code below.....

@QString regExpression = "(";
for (int i = 0; i < getStringList()->size(); ++i)
{
regExpression.append(getStringList()->at(i) + "|");
}

QRegExp rE(regExpression);
q_LineEdit->setValidator(new QRegExpValidator(rE, this));@

Thank you all for your suggestions........

Thanks & Regards..

Hostel

Your for loop is equal to my suggestion:
@
sl.join( "|" );
@