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package DBIx::HTML::LinkedMenus; |
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71283
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use strict; |
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use warnings; |
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our $VERSION = '1.11'; |
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# ----------------------------------------------- |
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# Encapsulated class data. |
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{ |
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my(%_attr_data) = |
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( # Alphabetical order. |
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_base_menu_name => 'dbix_base_menu', |
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_base_prompt => undef, |
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_base_value => undef, |
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_base_sql => '', |
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_dbh => '', |
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_form_name => 'dbix_form', |
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_linked_menu_name => 'dbix_linked_menu', |
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_linked_prompt => undef, |
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_linked_value => undef, |
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_linked_sql => '', |
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); |
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sub _default_for |
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{ |
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my($self, $attr_name) = @_; |
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$_attr_data{$attr_name}; |
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} |
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sub _read_data |
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{ |
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my($self) = @_; |
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my($base_sth) = $$self{'_dbh'} -> prepare($$self{'_base_sql'}); |
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my($linked_sth) = $$self{'_dbh'} -> prepare($$self{'_linked_sql'}); |
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$$self{'_data'} = {}; |
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my($base_order) = 0; |
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$base_sth -> execute(); |
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my($base_data, $linked_order, $linked_data); |
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while ($base_data = $base_sth -> fetch() ) |
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{ |
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$base_order++; |
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$linked_sth -> execute($$base_data[2]); |
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$linked_order = 0; |
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while ($linked_data = $linked_sth -> fetch() ) |
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{ |
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$linked_order++; |
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if ($linked_order == 1) |
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{ |
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$$self{'_data'}{$$base_data[0]} = |
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{ |
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link => {}, |
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order => $base_order, |
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value => $$base_data[1], |
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}; |
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} |
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$$self{'_data'}{$$base_data[0]}{'link'}{$$linked_data[0]} = |
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{ |
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order => $linked_order, |
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value => $$linked_data[1], |
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}; |
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} |
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} |
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$$self{'_size'} = $base_order; |
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} # End of _read_data. |
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sub _standard_keys |
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{ |
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sort keys %_attr_data; |
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} |
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sub _validate_options |
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{ |
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my($self) = @_; |
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croak(__PACKAGE__ . ". You must supply values for these parameters: dbh, base_sql, linked_sql, base_menu_name and linked_menu_name") if (! $$self{'_dbh'} || ! $$self{'_base_sql'} || ! $$self{'_linked_sql'} || ! $$self{'_base_menu_name'} || ! $$self{'_linked_menu_name'}); |
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# # Reset empty parameters to their defaults. |
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# # This could be optional, depending on another option. |
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# |
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# for my $attr_name ($self -> _standard_keys() ) |
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# { |
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# $$self{$attr_name} = $self -> _default_for($attr_name) if (! $$self{$attr_name}); |
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# } |
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} # End of _validate_options. |
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} # End of Encapsulated class data. |
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# ----------------------------------------------- |
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sub get |
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{ |
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my($self, $base_id, $link_id) = @_; |
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my(@result) = (); |
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if (exists($$self{'_data'}{$base_id}) && exists($$self{'_data'}{$base_id}{'link'}{$link_id}) ) |
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{ |
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@result = ($$self{'_data'}{$base_id}{'value'}, $$self{'_data'}{$base_id}{'link'}{$link_id}{'value'}); |
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} |
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@result; |
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} # End of get. |
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# ----------------------------------------------- |
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sub html_for_base_menu |
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{ |
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my($self) = @_; |
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""; |
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} # End of html_for_base_menu. |
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# ----------------------------------------------- |
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sub html_for_linked_menu |
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{ |
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my($self) = @_; |
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""; |
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} # End of html_for_linked_menu. |
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# ----------------------------------------------- |
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sub javascript_for_db() |
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{ |
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my($self) = @_; |
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my(@code) = <
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EOS |
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join("\n", @code); |
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} # End of javascript_for_db. |
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# ----------------------------------------------- |
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sub javascript_for_init_menu |
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{ |
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my($self) = @_; |
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my(@code) = <
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EOS |
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join("\n", @code); |
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} # End of javascript_for_init_menu. |
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# ----------------------------------------------- |
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257
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sub javascript_for_on_load |
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{ |
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my($self) = @_; |
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('onLoad' => 'dbix_init()'); |
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263
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} # End of javascript_for_on_load. |
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# ----------------------------------------------- |
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sub new |
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{ |
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my($caller, %arg) = @_; |
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my($caller_is_obj) = ref($caller); |
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my($class) = $caller_is_obj || $caller; |
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my($self) = bless({}, $class); |
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274
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for my $attr_name ($self -> _standard_keys() ) |
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{ |
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my($arg_name) = $attr_name =~ /^_(.*)/; |
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if (exists($arg{$arg_name}) ) |
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{ |
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$$self{$attr_name} = $arg{$arg_name}; |
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} |
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else |
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{ |
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$$self{$attr_name} = $self -> _default_for($attr_name); |
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} |
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} |
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288
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$self -> _validate_options(); |
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$self -> _read_data(); |
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0
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$self = undef if (! $$self{'_size'}); |
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return $self; |
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295
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} # End of new. |
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# ----------------------------------------------- |
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299
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sub size |
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{ |
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my($self) = @_; |
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303
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$$self{'_size'}; |
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305
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} # End of size. |
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307
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# ----------------------------------------------- |
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309
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1; |
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311
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__END__ |