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#
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# SimpleUserInterface.pm
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#
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# Originally Written by Christopher Williams
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#
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# Description
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#
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# Interface
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# ---------
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# new() : A new SimpleUserInterface object
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# askuser(Query) : Get inputs from the user based on the given query
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# returns 0 if cancelled or 1 if accepted
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package ActiveDoc::SimpleUserInterface;
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use ActiveDoc::Query;
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require 5.004;
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sub new {
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my $class=shift;
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$self={};
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bless $self, $class;
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@{$self->{allowed_commands}}=qw(freechoice basic strictchoice);
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return $self;
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}
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sub askuser {
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my $self=shift;
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my $userquery=shift;
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my $rv=1;
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my $found=0;
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# print out informational
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my $title=$userquery->title();
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if ( $title ne "" ) {
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print "-"x80;
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print "\n";
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print $title."\n";
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print "-"x80;
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print "\n";
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}
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print $userquery->intro();
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print "\n\n";
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foreach $query ( $userquery->querylist() ) {
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$rv=$self->_executequery($userquery,$query);
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}
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# --- confirm changes with user if we have input more than one value
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# if ( $#{$userquery->querylist()} > 1 ) {
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# print "\nDo you wish to Accept,Restart or Cancel these values? ".
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# "(a/r/c)\n";
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# my $in=<STDIN>;
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# if ( $in!~/^a/ ) {
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# $userquery->cancel();
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# if ( $in=~/^r/ ) {
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# return $self->askuser($userquery);
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# }
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# }
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# }
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if ( defined $rv ) {
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$userquery->OK();
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}
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return $rv;
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}
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sub _executequery {
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my $self=shift;
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my $userquery=shift;
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my $query=shift;
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# -- informational for each query
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print $userquery->querymessage($query)."\n";
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# -- ship off to the correct routine based on type
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foreach $command ( @{$self->{allowed_commands}} ) {
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$type=$userquery->querytype($query);
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if ( $command=~/^$type/ ) {
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$rv=$self->_calltype($command, $userquery, $query);
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$found='true';
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last;
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}
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}
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if ( $found ne "true" ) {
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# default to basic
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$rv=$self->_calltype("basic", $userquery, $query);
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}
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return $rv;
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}
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# requires typehadler to return the response - undef assumed to be a cancel
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sub _calltype {
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my $self=shift;
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my $command=shift;
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my $userquery=shift;
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my $query=shift;
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my @options=$userquery->queryoptions($query);
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my $rv=$self->$command( $userquery->queryprompt($query), @options );
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if ( defined $rv ) {
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# now process the response
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my ($ret,$message,@vals)=$userquery->lodgevalue($query,$rv);
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if ($ret ne 0 ) { # invalid response
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print "Input not valid :\n";
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print $message->read();
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$rv=$self->_executequery($userquery,$query);
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}
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}
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return $rv;
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}
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sub freechoice {
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my $self=shift;
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my $prompt=shift;
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my @options=@_;
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my $menuchoice;
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my ($rv, $item);
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my $num=1;
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foreach $item ( @options ) {
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print $num.". ".$item."\n";
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$num++;
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}
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if ( $num == 1 ) {
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return $rv=$self->basic($prompt);
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}
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else {
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print $num.". Enter Alternative Value\n";
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while ( ((($menuchoice=$self->basic("Please Enter a Number from".
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" the list above >"))!~/^\d+$/) ||
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(($menuchoice > $num) || ( $menuchoice < 1)))) {
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print "Please Select a number Between 1 and $num :\n" ;
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}
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}
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# Deal with alternative value
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if ( $menuchoice == $num ) {
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$rv=$self->basic($prompt);
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}
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elsif ( $menuchoice eq "" ) {
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$rv=undef;
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}
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else {
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$rv=$options[$menuchoice-1];
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print( $rv." selected\n");
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}
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return $rv;
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}
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sub strictchoice {
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my $self=shift;
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my $prompt=shift;
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my @options=@_;
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my $menuchoice;
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my ($rv, $item);
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my $num=0;
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foreach $item ( @options ) {
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$num++;
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print $num.". ".$item."\n";
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}
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if ( $num == 0 ) {
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return $rv=$self->basic($prompt);
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}
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elsif ( $num==1 ) {
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$rv=1;
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}
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else {
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print "Please Enter a Number from the list above :";
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while ( (($menuchoice=$self->basic($prompt))!~/^\d+$/) ||
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(($menuchoice > $num) || ( $menuchoice < 1)) ) {
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print "Please Select a number Between 1 and $num :" ;
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}
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}
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$rv=$options[$menuchoice-1];
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return $rv;
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}
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sub basic {
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my $self=shift;
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my $prompt;
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((@_ && (defined $_[0]))?($prompt=shift):($prompt=">"));
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print $prompt;
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my $in=<STDIN>;
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chomp $in;
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return $in;
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}
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