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examples/Tkwic.perl  view on Meta::CPAN

    if (open FILE, $filename) {
        my $state = 'none';

        while (<FILE>) {
            # Strip comments.  Lines that contain a quoted sharp are not
            # handled, so don't put comments into these lines.
            s/\#.*$// if !/([\'\"]).*\#.*\1/o;
            # Strip leading and trailing spaces.
            s/^\s*//o;
            s/\s*$//o;
            # Empty lines are skipped.
            next if !$_;
            if ($state eq 'macro') {
                # The end of the macro is reached if the line ends with a
                # semicolon.
                if (/;$/o) {
                    chop;
                    $state = 'none';
                }
                push(@{$macros[-1]->{body}}, $_) if $_;
            } else {
                my @list = /MACRO\s+(.*)\((.*)\)/o;
                if (@list) {
                    push @macros, {name => $list[0], body => []};
                    $state = 'macro';
                } else {
                    my $p = basename($0);
                    print STDERR "$p:$filename:$.: Syntax error near to `$_´\n";
                }
            }
        }
        close FILE;
    } else {
        my $p = basename($0);
        print STDERR "$p:$filename: Cannot open file\n";
    }
    return \@macros;
}

sub update_history_menu {
    my ($self) = @_;
    my ($menu, $history, $label);

    $menu = $self->{history_menu};
    $history = $self->{query_history};
    $menu->delete(1, 'end');
    foreach my $query (@$history) {
        $label = substr($query, 0, 40);
        $label =~ s/\n/ /go; 
        $menu->add('command', -label => $label,
                    -command => [\&copy_query, $self, $query]);
    } 
}

sub create_query_area {
    my ($self) = @_;

    my $main_window = $self->{main_window};
    my $vbox = $main_window->Frame(-relief => 'groove', -borderwidth => 2);
    my $popup = $self->{query_popup} =
        $vbox->Menu(-menuitems => [['command' => "Clear query",
                                    -command => [\&clear_query, $self]]],
                    -tearoff => 0);
    my $query_entry;
    for (my $i = 0; $i < $NumberOfQueryEntries; $i++) {
        if ($UseTextWidget) {
            my $scrolled = $vbox->Scrolled('Text', -scrollbars => 'osoe',
                                           -height => $QueryEntryHeight,
                                           -wrap => 'word');
            $query_entry = $scrolled->Subwidget('scrolled');
            $query_entry->tagConfigure('argument', -foreground => $ArgumentColor);
            $query_entry->tagConfigure('info', -foreground => $InfoColor);
            $query_entry->bind('Tk::Text', '<3>', '');
            $scrolled->pack(-fill => 'x', -expand => 1);
        } else {
            $query_entry = $vbox->Entry();
            $query_entry->pack(-fill => 'x', -expand => 1);
        }
        $query_entry->bind('<FocusIn>', [ \&query_focus_in, $self, $i ]);
        $query_entry->bind('<Button-3>',
                           sub { $popup->Popup(-popover => 'cursor', -popanchor => 'nw'); });
        $self->{query_entry}[$i] = $query_entry;
    }
    $self->{query_entry}[0]->focus();
    my $hbox = $vbox->Frame();
    my $history_button =
        $hbox->Menubutton(-text => "History", -indicatoron => 1,
                          -relief => 'raised', -pady => 5);
    $self->{history_menu} = $history_button->menu;
    my $execute_query_button = $hbox->Button(-text => "Start query",
                                          -command => [\&execute_query, $self]);
    $history_button->grid($execute_query_button, -sticky => 'ew');
    $hbox->gridColumnconfigure(1, -weight => 1);
    $hbox->pack(-fill => 'x', -expand => 1);
    return $vbox;
}

sub query_focus_in {
    my ($widget, $self, $n) = @_;

    for (my $i = 0; $i < $NumberOfQueryEntries; $i++) {
        if ($i != $n) {
            $self->{query_entry}[$i]->configure(-background =>
                                                $BackgroundColor);
        }
    }
    $widget->configure(-background => $SelectedQueryColor);
    $self->{current_query_entry} = $widget;
}

sub clear_query_area {
    my ($self) = @_;
    for (my $i = 0; $i < $NumberOfQueryEntries; $i++) {
        $self->set_query($self->{query_entry}[$i], '');
    }
}

sub create_output_area {
    my ($self) = @_;

    my $main_window = $self->{main_window};

    my $vbox = $main_window->Frame(-relief => 'groove', -borderwidth => 2);

    # Word, POS etc. buttons
    my $hbox1 = $vbox->Frame(-relief => 'groove', -borderwidth => 2);
    my $command = [sub {$self->show_matches($self->{query_first});}];
    my $word_button = $hbox1->Checkbutton(-text => "Word",
                                          -variable => \$self->{show_word},
                                          -command => $command);
    my $pos_button = $hbox1->Checkbutton(-text => "POS",
                                         -variable => \$self->{show_pos},
                                         -command => $command);
    my $lemma_button = $hbox1->Checkbutton(-text => "Lemma",
                                           -variable => \$self->{show_lemma},
                                           -command => $command);
    my $noun_chunks_button = $hbox1->Checkbutton(-text => "Noun chunks",
                                        -variable => \$self->{show_noun_chunks},
                                        -command => $command);
    $self->{noun_chunks_button} = $noun_chunks_button;
    if ($ManageNounChunksButton) {