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package Demeter::UI::Athena::DropTarget;
use Wx qw( :everything);
use base qw(Wx::DropTarget);
use Demeter::UI::Artemis::DND::PlotListDrag;
use Scalar::Util qw(looks_like_number);
sub new {
my $class = shift;
my $this = $class->SUPER::new;
my $data = Demeter::UI::Artemis::DND::PlotListDrag->new();
$this->SetDataObject( $data );
$this->{DATA} = $data;
return $this;
};
sub OnData {
my ($this, $x, $y, $def) = @_;
my $list = $::app->{main}->{list};
return 0 if not $list->GetCount;
$this->GetData; # this line is what transfers the data from the Source to the Target
my $from = ${ $this->{DATA}->{Data} };
my $from_object = $list->GetIndexedData($from);
my $from_label = $list->GetString($from);
my $from_checked = $list->IsChecked($from);
my $point = Wx::Point->new($x, $y);
my $to = $list->HitTest($point);
my $to_label = $list->GetString($to);
return 0 if ($to == $from); # either of these two would leave the list in the same state
# return 0 if ($to == $from+1);
my $message;
$list -> DeleteData($from);
if ($to == -1) {
$list -> AddData($from_label, $from_object);
$list -> Check($list->GetCount-1, $from_checked);
$::app->{main}->{list}->SetSelection($from);
$message = sprintf("Moved '%s' to the last position.", $from_label);
} else {
$message = sprintf("Moved '%s' above %s.", $from_label, $to_label);
--$to if ($from < $to);
$list -> InsertData($from_label, $to, $from_object);
#$list -> SetClientData($to, $from_object);
$list -> Check($to, $from_checked);
$::app->{main}->{list}->SetSelection($to);
};
$::app->OnGroupSelect(q{}, scalar $::app->{main}->{list}->GetSelection, 0);
$::app->modified(1);
$::app->{main}->status($message);
return $def;
};
1;
=head1 NAME
Demeter::UI::Athena::DropTarget - A drop target for rearranging Athena's group list
=head1 VERSION
This documentation refers to Demeter version 0.9.26.
=head1 SYNOPSIS
This module provides a way to process drag-n-drop events in Athena's
group list. This will move a group I<above> the group on which it is
dropped.
This is unused as of 0.9.20.
=head1 DEPENDENCIES
Wx::DND.
Demeter's dependencies are in the F<Build.PL> file.
=head1 BUGS AND LIMITATIONS
Please report problems to the Ifeffit Mailing List
(L<http://cars9.uchicago.edu/mailman/listinfo/ifeffit/>)
Patches are welcome.
=head1 AUTHOR
Bruce Ravel, L<http://bruceravel.github.io/home>
L<http://bruceravel.github.io/demeter/>
=head1 LICENCE AND COPYRIGHT
Copyright (c) 2006-2019 Bruce Ravel (L<http://bruceravel.github.io/home>). All rights reserved.
This module is free software; you can redistribute it and/or
modify it under the same terms as Perl itself. See L<perlgpl>.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
=cut
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