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/* Generated by Interface Builder */
#import "Verifier.h"
#import <string.h>
#import <appkit/publicWraps.h>
#import <appkit/Matrix.h>
#import <appkit/Cell.h>
#import <appkit/Text.h>
/*
*
* The Verifier Object
*
* This Object is a Text Delegate that enforces valid data entry on
* Forms that use it as a Text Delegate. The FormCells must have their
* Entry types set ( [cellname setEntryType:NX_FLOATTYPE] for instance.
*
* The Verifier also enforces a length restriction. In this example, it is
* used for the separator, which must be a single character.
*
* Whenever the user type a character, the FormCell's validity is checked,
* and invalid changes are rejected.
*
*/
@implementation Verifier
- textDidGetKeys:sender isEmpty:(BOOL)flag
{
id testCell;
testCell = [[sender delegate] selectedCell];
if (! flag) {
char testString[500];
int length, testLength;
strcpy(testString,[testCell stringValue]);
if ( ! [testCell isEntryAcceptable:[testCell stringValue]] ) {
/*
* set the selection to the invalid character, and delete it
*/
int badChar;
badChar=strlen(testString);
[sender setSel:badChar-1:badChar];
[sender delete:self];
NXBeep();
strcpy(testString,[testCell stringValue]);
}
/*
* Check the length of the entry as well. The tag is used to set the
* valid length. If Tag is zero, skip this check.
*/
length=[testCell tag];
if ( length) {
testLength = strlen(testString);
if ( length == 1 ) {
/*
* Special case for length == 1: cut off the first part of the
* string, leaving the last char typed, don't beep
*/
if ( testLength > 1 ) {
[sender setSel:0:testLength-1];
[sender delete:self];
}
[sender setSel:0:1];
}
else if ( testLength > length ) {
/*
* Length is invalid, cut off some chars
*/
[sender setSel:length-1:testLength];
[sender delete:self];
NXBeep();
}
}
}
return self;
}
@end
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