package Qt::attributes; # # I plan to support public/protected/private attributes. here goes. # Attributes default to protected. # # package MyBase; # use Qt::attributes qw( # private: # foo # protected: # bar # public: # baz # ); # # package MyDerived; # use Qt::isa qw(MyBase); # # sub foo { # # 1 way to access private attributes from derived class # # # # this->{$class} contains private attributes for $class # # I specify it to always work that way, # # so feel free to use it in code. # this->{MyBase}{foo} = 10; # # # 2 ways to access protected attributes # bar = 10; # this->{bar} = 10; # # # 3 ways to access public attributes # baz = 10; # this->{baz} = 10; # this->baz = 10; # } # # Attributes override any method with the same name, so you may want # to prefix them with _ to prevent conflicts. # sub import { my $class = shift; my $caller = (caller)[0]; for my $attribute (@_) { exists ${ ${$caller . '::META'}{'attributes'} }{$attribute} and next; Qt::_internal::installattribute($caller, $attribute); ${ ${$caller . '::META'}{'attributes'} }{$attribute} = 1; } } 1;