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/ ); |
/ ); |
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our $VERSION = '0.01'; |
our $VERSION = '0.02'; |
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=head1 NAME |
=head1 NAME |
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=head2 selected |
=head2 selected |
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Move selection (or refresh it) |
Move selection to some line of document |
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$iselect->selected( +1 ); |
$iselect->selected( 42 ); |
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$iselect->selected( -1 ); |
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$iselect->selected( 0 ); |
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=cut |
=cut |
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sub selected { |
sub selected { |
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my $self = shift; |
my $self = shift; |
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my $d = shift || 0; |
my $new_pos = shift; |
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my $screen_line = $pos - $top_screen_line; |
if ( defined $new_pos ) { |
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$self->redraw_line( $screen_line, $self->lines->[$pos] ); |
my $screen_line = $pos - $top_screen_line; |
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$self->redraw_line( $screen_line, $self->lines->[$pos] ); |
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my $last_screen_line = $self->screen->rows - $status_lines; |
my $last_screen_line = $self->screen->rows - $status_lines; |
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if ( $d < 0 && $screen_line == 0 ) { |
if ( $new_pos < $pos && $screen_line == 0 ) { |
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if ( $pos > 0 ) { |
if ( $pos > 0 ) { |
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$top_screen_line--; |
$top_screen_line--; |
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$pos--; |
$pos--; |
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# $self->redraw_screen; |
$self->screen->at(0,0)->il; |
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$self->screen->at(0,0)->il; |
$self->error_text( ' ' ); |
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} else { |
} else { |
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$self->error_text( "Already at Begin." ); |
$self->error_text( "Already at Begin." ); |
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} |
} |
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} elsif ( $d > 0 && $screen_line == $last_screen_line ) { |
} elsif ( $new_pos > $pos && $screen_line == $last_screen_line ) { |
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if ( $pos < $nr_lines ) { |
if ( $pos < $nr_lines ) { |
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$top_screen_line++; |
$top_screen_line++; |
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$pos++; |
$pos++; |
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# $self->redraw_screen; |
$self->screen->at(0,0)->dl; |
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$self->screen->at(0,0)->dl; |
} else { |
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$self->error_text( "Already at End." ); |
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} |
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} else { |
} else { |
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$self->error_text( "Already at End." ); |
$pos = $new_pos; |
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} |
} |
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} else { |
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$pos += $d; |
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} |
} |
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my $line = $self->lines->[$pos]; |
my $line = $self->lines->[$pos]; |
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$self->selected; |
$self->selected; |
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my $lines_on_screen = $self->screen->rows - $status_lines; |
my $lines_on_screen = $self->screen->rows - $status_lines; |
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my $max_top_screen_line = |
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$nr_lines > $lines_on_screen ? $nr_lines - $lines_on_screen : 0; |
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while(my $key = $self->screen->getch()) { |
while(my $key = $self->screen->getch()) { |
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$self->error_text(''); |
$self->error_text(''); |
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if ($key eq 'ku') { |
if ($key eq 'ku') { |
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$self->selected( -1 ); |
$self->selected( $pos - 1 ); |
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} elsif ($key eq 'kd') { |
} elsif ($key eq 'kd') { |
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$self->selected( +1 ); |
$self->selected( $pos + 1 ); |
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} elsif ($key eq 'pgup' ) { |
} elsif ($key eq 'pgup' ) { |
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# first line on screen? |
# first line on screen? |
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if ( $pos == $top_screen_line ) { |
if ( $pos == $top_screen_line ) { |
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$top_screen_line = 0 if $top_screen_line < 0; |
$top_screen_line = 0 if $top_screen_line < 0; |
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$self->redraw_screen; |
$self->redraw_screen; |
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} |
} |
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if ( my $rel_pos = -( $pos - $top_screen_line ) ) { |
if ( $pos == $top_screen_line ) { |
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$self->selected( $rel_pos ); |
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} else { |
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$self->error_text( "Already at top." ); |
$self->error_text( "Already at top." ); |
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} else { |
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$self->selected( $top_screen_line ); |
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} |
} |
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} elsif ($key eq 'pgdn' ) { |
} elsif ($key eq 'pgdn' ) { |
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# last line on screen? |
# last line on screen? |
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if ( $pos - $top_screen_line == $lines_on_screen ) { |
if ( $pos - $top_screen_line == $lines_on_screen ) { |
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$top_screen_line += $lines_on_screen; |
$top_screen_line += $lines_on_screen; |
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my $max_top_screen_line = |
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$nr_lines > $lines_on_screen ? $nr_lines - $lines_on_screen : 0; |
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$top_screen_line = $max_top_screen_line if $top_screen_line > $max_top_screen_line; |
$top_screen_line = $max_top_screen_line if $top_screen_line > $max_top_screen_line; |
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warn "max_top_screen_line = $max_top_screen_line top_screen_line = $top_screen_line\n"; |
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$self->redraw_screen; |
$self->redraw_screen; |
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} |
} |
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if (my $relative_pos = $top_screen_line + $lines_on_screen - $pos) { |
if ( $pos == $nr_lines ) { |
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$self->selected( $relative_pos ); |
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} else { |
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$self->error_text( "Already at bottom." ); |
$self->error_text( "Already at bottom." ); |
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} else { |
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$self->selected( $top_screen_line + $lines_on_screen ); |
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} |
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} elsif ($key eq 'g' ) { |
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if ( $top_screen_line == 0 ) { |
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if ( $pos == 0 ) { |
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$self->error_text( "Already at top." ); |
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} else { |
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$self->selected( 0 ); |
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} |
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} else { |
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$top_screen_line = 0; |
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$pos = 0; |
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$self->redraw_screen; |
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} |
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} elsif ($key eq 'G' ) { |
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if ( $top_screen_line == $max_top_screen_line ) { |
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if ( $pos == $nr_lines ) { |
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$self->error_text( "Already at bottom." ); |
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} else { |
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$self->selected( $nr_lines ); |
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} |
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} else { |
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$top_screen_line = $max_top_screen_line; |
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$pos = $nr_lines; |
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$self->redraw_screen; |
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} |
} |
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} |
} |
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