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|
package Reaction::UI::Skin;
use Reaction::Class;
# declaring dependencies
use Reaction::UI::LayoutSet;
use Reaction::UI::RenderingContext;
use File::ShareDir;
use File::Basename;
use Config::Any;
use aliased 'Path::Class::Dir';
use namespace::clean -except => [ qw(meta) ];
has '_layout_set_cache' => (is => 'ro', default => sub { {} });
has '_widget_class_cache' => (is => 'ro', default => sub { {} });
has 'name' => (is => 'ro', isa => 'Str', required => 1);
has 'skin_dir' => (is => 'rw', isa => Dir, lazy_fail => 1);
has 'widget_search_path' => (
is => 'rw', isa => 'ArrayRef', required => 1, default => sub { [] }
);
has 'view' => (
is => 'ro', required => 1, weak_ref => 1,
handles => [ qw(layout_set_class) ],
);
has 'super' => (
is => 'rw', isa => Skin, required => 0, predicate => 'has_super',
);
sub BUILD {
my ($self, $args) = @_;
$self->_find_skin_dir($args);
$self->_load_skin_config($args);
}
sub _find_skin_dir {
my ($self, $args) = @_;
my $skin_name = $self->name;
if ($skin_name =~ s!^/(.*?)/!!) {
my $dist = $1;
$args->{skin_base_dir} = eval {
Dir->new(File::ShareDir::dist_dir($dist))
->subdir('skin');
};
if ($@) {
# No installed Reaction
my $file = __FILE__;
my $dir = Dir->new(dirname($file));
my $skin_base;
while ($dir->parent) {
if (-d $dir->subdir('share') && -d $dir->subdir('share')->subdir('skin')) {
$skin_base = $dir->subdir('share')->subdir('skin');
last;
}
$dir = $dir->parent;
}
confess "could not find skinbase by recursion. ended up at $dir, from $file"
unless $skin_base;
$args->{skin_base_dir} = $skin_base;
}
}
my $base = $args->{skin_base_dir}->subdir($skin_name);
confess "No such skin base directory ${base}"
unless -d $base;
$self->skin_dir($base);
};
sub _load_skin_config {
my ($self, $args) = @_;
my $class = ref($self) || $self;
my $base = $self->skin_dir;
my $lst = sub { (ref $_[0] eq 'ARRAY') ? $_[0] : [$_[0]] };
my @files = (
$args->{skin_base_dir}->file('defaults.conf'), $base->file('skin.conf')
);
# we get [ { $file => $conf }, ... ]
my %cfg = (map { %{(values %{$_})[0]} }
@{Config::Any->load_files({
files => [ grep { -e $_ } map { $_->stringify } @files ],
use_ext => 1,
})}
);
if (my $super_name = $cfg{extends}) {
my $super = $class->new(
name => $super_name,
view => $self->view,
skin_base_dir => $args->{skin_base_dir},
);
$self->super($super);
}
if (exists $cfg{widget_search_path}) {
$self->widget_search_path($lst->($cfg{widget_search_path}));
}
# For some reason this conditional doesn't work correctly without
# the "my @x". Answers on a postcard.
unless (my @x = $self->full_widget_search_path) {
confess "No widget_search_path in defaults.conf or skin.conf"
.($self->has_super
? " and no search path provided from super skin "
.$self->super->name
: "");
}
}
sub create_layout_set {
my ($self, $name) = @_;
$self->_create_layout_set($name, [], $self);
};
sub _create_layout_set {
my ($self, $name, $tried, $top_skin) = @_;
if (my $path = $self->layout_path_for($name)) {
return $self->layout_set_class->new(
$self->layout_set_args_for($name),
source_file => $path,
top_skin => $top_skin,
);
}
$tried = [ @{$tried}, $self->our_path_for_type('layout') ];
if ($self->has_super) {
return $self->super->_create_layout_set($name, $tried, $top_skin);
}
confess "Couldn't find layout set file for ${name}, tried "
.join(', ', @$tried);
};
sub layout_set_args_for {
my ($self, $name) = @_;
return (
name => $name,
skin => $self,
($self->has_super ? (next_skin => $self->super) : ()),
$self->view->layout_set_args_for($name),
);
};
sub layout_path_for {
my ($self, $layout) = @_;
my $file_name = join(
'.', $layout, $self->view->layout_set_file_extension
);
my $path = $self->our_path_for_type('layout')
->file($file_name);
return (-e $path ? $path : undef);
};
sub search_path_for_type {
my ($self, $type) = @_;
return [
$self->our_path_for_type($type),
($self->has_super
? @{$self->super->search_path_for_type($type)}
: ()
)
];
};
sub our_path_for_type {
my ($self, $type) = @_;
return $self->skin_dir->subdir($type)
};
sub full_widget_search_path {
my ($self) = @_;
return (
@{$self->widget_search_path},
($self->has_super ? $self->super->full_widget_search_path : ())
);
};
sub widget_class_for {
my ($self, $layout_set) = @_;
my $base = blessed($self);
my $widget_type = $layout_set->widget_type;
return $self->_widget_class_cache->{$widget_type} ||= do {
my @search_path = $self->full_widget_search_path;
my @haystack = map {join('::', $_, $widget_type)} @search_path;
foreach my $class (@haystack) {
#if the class is already loaded skip the call to Installed etc.
return $class if Class::MOP::is_class_loaded($class);
next unless Class::Inspector->installed($class);
my $ok = eval { Class::MOP::load_class($class) };
confess("Failed to load widget '${class}': $@") if $@;
return $class;
}
confess "Couldn't locate widget '${widget_type}' for layout "
."'${\$layout_set->name}': tried: ".join(", ", @haystack);
};
};
__PACKAGE__->meta->make_immutable;
1;
|
