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williamc |
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#
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# Message.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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# Hold a multi level message that can be reconstructed to any level
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#
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# Interface
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# ---------
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# new() : A new Message object
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# setlevel([level_number]) : set the current level to which messages can
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# be assigned.
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# message(string) : Set a new message at the current level
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# read([level]) : return list of all messages up to level n (or
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# current assignment level)
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# readlevel(level) : read only those messages assigned to the given
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# level
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# copy(Message) : Copy the messages from one object to the current
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# starting at the current active level
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# levels() : return the number of assignment levels
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package Utilities::Message;
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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->setlevel(0);
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$self->{messages}=();
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return $self;
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}
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sub setlevel {
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my $self=shift;
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@_?$self->{aslevel}=shift
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:$self->{aslevel}++;
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if ( $self->{aslevel} > $self->{max} ) { $self->{max}++ }
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}
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sub levels {
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my $self=shift;
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return $self->{max};
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}
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sub message {
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my $self=shift;
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my $message=shift;
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push @{$self->{messages}}, $message;
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push @{$self->{messagelevel}}, $self->{aslevel};
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}
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sub read {
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my $self=shift;
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my $lev;
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if (@_) { $lev=shift }
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else { $lev=$self->{aslevel} }
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my @messages=();
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for ( my $i=0; $i<=$#{$self->{messages}}; $i++) {
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if ( $self->{messagelevel}[$i] <= $lev ) {
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push @messages, $self->{messages}[$i];
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}
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}
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return @messages;
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}
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sub readlevel {
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my $self=shift;
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my @messages=();
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my $lev;
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if (@_) { $lev=shift }
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else { $lev=$self->{aslevel} }
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for ( my $i=0; $i<=$#{$self->{messages}}; $i++) {
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if ( $self->{messagelevel}[$i] eq $lev ) {
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push @messages, $self->{messages}[$i];
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}
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}
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return @messages;
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}
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sub copy {
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my $self=shift;
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my $obj=shift;
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my $currentlev=$self->{aslevel};
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for ( my $i=0; $i<=$obj->levels(); $i++) {
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foreach $mes ( $obj->readlevel($i) ) {
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$self->message($mes);
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}
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$self->setlevel();
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}
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$self->setlevel($currentlev);
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}
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