# See bottom of file for license and copyright information
# Plugin for Foswiki - The Free and Open Source Wiki, http://foswiki.org/
#
# Copyright (C) 2001-2007 Peter Thoeny, peter@thoeny.org
# Copyright (C) 2008 Foswiki Contributors
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version. For
# more details read LICENSE in the root of this distribution.
#
# 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.
#
# As per the GPL, removal of this notice is prohibited.
# =========================

# =========================
package Foswiki::Plugins::RenderListPlugin
  ;    # change the package name and $pluginName!!!

use strict;
use warnings;

# =========================
use vars qw(
  $web $topic $user $installWeb
  $pubUrl $attachUrl
);

our $VERSION           = '$Rev: 14143 (2012-02-29) $';
our $RELEASE           = '2.2.6';
our $pluginName        = 'RenderListPlugin';    # Name of this Plugin
our $NO_PREFS_IN_TOPIC = 1;
our $SHORTDESCRIPTION = 'Render bullet lists in a variety of formats';

our %defaultThemes = (
    THREAD => 'tree, 1',
    HOME =>
'icon, 1, 16, 16, %ATTACHURL%/empty.gif, %ATTACHURL%/dot_udr.gif, %ATTACHURL%/dot_ud.gif, %ATTACHURL%/dot_ur.gif, %ATTACHURL%/home.gif',
    ORG =>
'icon, 0, 16, 16, %ATTACHURL%/empty.gif, %ATTACHURL%/dot_udr.gif, %ATTACHURL%/dot_ud.gif, %ATTACHURL%/dot_ur.gif, %ATTACHURL%/home.gif',
    GROUP =>
'icon, 0, 16, 16, %ATTACHURL%/empty.gif, %ATTACHURL%/dot_udr.gif, %ATTACHURL%/dot_ud.gif, %ATTACHURL%/dot_ur.gif, %ATTACHURL%/group.gif',
    EMAIL =>
'icon, 0, 16, 16, %ATTACHURL%/empty.gif, %ATTACHURL%/dot_udr.gif, %ATTACHURL%/dot_ud.gif, %ATTACHURL%/dot_ur.gif, %ATTACHURL%/email.gif',
    TREND =>
'icon, 0, 16, 16, %ATTACHURL%/empty.gif, %ATTACHURL%/dot_udr.gif, %ATTACHURL%/dot_ud.gif, %ATTACHURL%/dot_ur.gif, %ATTACHURL%/trend.gif',
    FILE =>
'icon, 0, 16, 16, %ATTACHURL%/empty.gif, %ATTACHURL%/dot_udr.gif, %ATTACHURL%/dot_ud.gif, %ATTACHURL%/dot_ur.gif, %ATTACHURL%/file.gif',
);

# =========================
sub initPlugin {
    ( $topic, $web, $user, $installWeb ) = @_;

    # check for Plugins.pm versions
    if ( $Foswiki::Plugins::VERSION < 1 ) {
        Foswiki::Func::writeWarning(
            "Version mismatch between $pluginName and Plugins.pm");
        return 0;
    }

    # one time initialization
    $pubUrl    = Foswiki::Func::getUrlHost() . Foswiki::Func::getPubUrlPath();
    $attachUrl = "$pubUrl/$installWeb/$pluginName";

    # Plugin correctly initialized
    return 1;
}

# =========================
sub preRenderingHandler {
### my ( $text, $web ) = @_;   # do not uncomment, use $_[0], $_[1] instead

    # This handler is called by getRenderedVersion just before the line loop

    # Render here, not in commonTagsHandler so that lists produced by
    # Plugins, TOC and SEARCH can be rendered
    if ( $_[0] =~ /%RENDERLIST/o ) {
        unless ( $_[0] =~
s/%RENDERLIST{(.*?)}%\s*(([\n\r]+[^ ]{3}[^\n\r]*)*?)(([\n\r]+ {3}[^\n\r]*)+)/&handleRenderList($1, $2, $4)/ges
          )
        {

            # Cairo compatibility fallback
            $_[0] =~
s/%RENDERLIST{(.*?)}%\s*(([\n\r]+[^\t]{1}[^\n\r]*)*?)(([\n\r]+\t[^\n\r]*)+)/&handleRenderList($1, $2, $4)/ges;
        }
    }
}

# =========================
sub handleRenderList {
    my ( $theAttr, $thePre, $theList ) = @_;

    $theAttr =~ s/ {3}/\t/gs;
    $thePre  =~ s/ {3}/\t/gs;
    $theList =~ s/ {3}/\t/gs;

    my $focus = &Foswiki::Func::extractNameValuePair( $theAttr, "focus" );
    my $depth = &Foswiki::Func::extractNameValuePair( $theAttr, "depth" );
    my $theme = &Foswiki::Func::extractNameValuePair( $theAttr, "theme" )
      || &Foswiki::Func::extractNameValuePair($theAttr);
    $theme = uc( $theme || '' );
    if ( defined $defaultThemes{$theme} ) {
        $theme = $defaultThemes{$theme};
    }
    else {
        $theme = "RENDERLISTPLUGIN_${theme}_THEME";
        $theme = &Foswiki::Func::getPreferencesValue($theme)
          || "unrecognized theme type";
    }
    my ( $type, $params ) = split( /, */, $theme, 2 );
    $type = lc($type);

    if ( $type eq "tree" || $type eq "icon" ) {
        return $thePre
          . renderIconList( $type, $params, $focus, $depth, $theList );
    }
    else {
        return "$thePre$theList";
    }
}

# =========================
sub renderIconList {
    my ( $theType, $theParams, $theFocus, $theDepth, $theText ) = @_;

    $theText =~ s/^[\n\r]*//os;
    my @tree       = ();
    my $level      = 0;
    my $type       = "";
    my $text       = "";
    my $focusIndex = -1;
    foreach ( split( /[\n\r]+/, $theText ) ) {
        m/^(\t+)(.) *(.*)/;
        $level = length($1);
        $type  = $2;
        $text  = $3;
        if ( ($theFocus) && ( $focusIndex < 0 ) && ( $text =~ /$theFocus/ ) ) {
            $focusIndex = scalar(@tree);
        }
        push( @tree, { level => $level, type => $type, text => $text } );
    }

    # reduce tree to relatives around focus
    if ( $focusIndex >= 0 ) {

        # splice tree into before, current node and after parts
        my @after = splice( @tree, $focusIndex + 1 );
        my $nref = pop(@tree);

        # highlight node with focus and remove links
        $text = $nref->{'text'};
        $text =~
          s/^([^\-]*)\[\[.*?\]\[(.*?)\]\]/$1$2/o;    # remove [[...][...]] link
        $text =~ s/^([^\-]*)\[\[(.*?)\]\]/$1$2/o;    # remove [[...]] link
        $text = "<b> $text </b>";                    # bold focus text
        $nref->{'text'} = $text;

        # remove uncles and siblings below current node
        $level = $nref->{'level'};
        for ( my $i = 0 ; $i < scalar(@after) ; $i++ ) {
            if (
                ( $after[$i]->{'level'} < $level )
                || (   $after[$i]->{'level'} <= $level
                    && $after[$i]->{'type'} ne " " )
              )
            {
                splice( @after, $i );
                last;
            }
        }

        # remove uncles and siblings above current node
        my @before = ();
        for ( my $i = scalar(@tree) - 1 ; $i >= 0 ; $i-- ) {
            if ( $tree[$i]->{'level'} < $level ) {
                push( @before, $tree[$i] );
                $level = $tree[$i]->{'level'};
            }
        }
        @tree       = reverse(@before);
        $focusIndex = scalar(@tree);
        push( @tree, $nref );
        push( @tree, @after );
    }

    # limit depth of tree
    my $depth = $theDepth;
    unless ( $depth =~ s/.*?([0-9]+).*/$1/o ) {
        $depth = 0;
    }
    if ($theFocus) {
        if ( $theDepth eq "" ) {
            $depth = $focusIndex + 3;
        }
        else {
            $depth += $focusIndex + 1;
        }
    }
    if ( $depth > 0 ) {
        my @tmp = ();
        foreach my $ref (@tree) {
            push( @tmp, $ref ) if ( $ref->{'level'} <= $depth );
        }
        @tree = @tmp;
    }

    $theParams =~ s/%PUBURL%/$pubUrl/go;
    $theParams =~ s/%ATTACHURL%/$attachUrl/go;
    $theParams =~ s/%WEB%/$installWeb/go;
    $theParams =~ s/%MAINWEB%/Foswiki::Func::getMainWebname()/geo;
    $theParams =~ s/%TWIKIWEB%/$Foswiki::cfg{SystemWebName}/geo;
    $theParams =~ s/%SYSTEMWEB%/$Foswiki::cfg{SystemWebName}/geo;
    my ( $showLead, $width, $height, $iconSp, $iconT, $iconI, $iconL, $iconImg )
      = split( /, */, $theParams );
    $width  = 16          unless ($width);
    $height = 16          unless ($height);
    $iconSp = "empty.gif" unless ($iconSp);
    $iconSp = fixImageTag( $iconSp, $width, $height );
    $iconT = "dot_udr.gif" unless ($iconT);
    $iconT = fixImageTag( $iconT, $width, $height );
    $iconI = "dot_ud.gif" unless ($iconI);
    $iconI = fixImageTag( $iconI, $width, $height );
    $iconL = "dot_ur.gif" unless ($iconL);
    $iconL = fixImageTag( $iconL, $width, $height );
    $iconImg = "home.gif" unless ($iconImg);
    $iconImg = fixImageTag( $iconImg, $width, $height );

    $text = "";
    my $start = 0;
    $start = 1 unless ($showLead);
    my @listIcon = ();
    for ( my $i = 0 ; $i < scalar(@tree) ; $i++ ) {
        $text .=
          '<table border="0" cellspacing="0" cellpadding="0"><tr>' . "\n";
        $level = $tree[$i]->{'level'};
        for ( my $l = $start ; $l < $level ; $l++ ) {
            if ( $l == $level - 1 ) {
                $listIcon[$l] = $iconSp;
                for ( my $x = $i + 1 ; $x < scalar(@tree) ; $x++ ) {
                    last if ( $tree[$x]->{'level'} < $level );
                    if (   $tree[$x]->{'level'} <= $level
                        && $tree[$x]->{'type'} ne " " )
                    {
                        $listIcon[$l] = $iconI;
                        last;
                    }
                }
                if ( $tree[$i]->{'type'} eq " " ) {
                    $text .= "<td valign=\"top\">$listIcon[$l]</td>\n";
                }
                elsif ( $listIcon[$l] eq $iconSp ) {
                    $text .= "<td valign=\"top\">$iconL</td>\n";
                }
                else {
                    $text .= "<td valign=\"top\">$iconT</td>\n";
                }
            }
            else {
                $text .=
                  "<td valign=\"top\">" . ( $listIcon[$l] || '' ) . "</td>\n";
            }
        }
        if ( $theType eq "icon" ) {

            # icon theme type
            if ( $tree[$i]->{'type'} eq " " ) {

                # continuation line
                $text .= "<td valign=\"top\">$iconSp</td>\n";
            }
            elsif ( $tree[$i]->{'text'} =~
                /^\s*(<b>)?\s*((icon\:)?<img[^>]+>|icon\:[^\s]+)\s*(.*)/ )
            {

                # specific icon
                $tree[$i]->{'text'} = $4;
                $tree[$i]->{'text'} = "$1 $4" if ($1);
                my $icon = $2;
                $icon =~ s/^icon\://o;
                $icon = fixImageTag( $icon, $width, $height );
                $text .= "<td valign=\"top\">$icon</td>\n";
            }
            else {

                # default icon
                $text .= "<td valign=\"top\">$iconImg</td>\n";
            }
            $text .=
"<td valign=\"top\" class=\"foswikiNoBreak\" >&nbsp; $tree[$i]->{'text'} </td>\n";

        }
        else {

            # tree theme type
            if ( $tree[$i]->{'text'} =~
                /^\s*(<b>)?\s*((icon\:)?<img[^>]+>|icon\:[^\s]+)\s*(.*)/ )
            {

                # specific icon
                $tree[$i]->{'text'} = $4;
                $tree[$i]->{'text'} = "$1 $4" if ($1);
                my $icon = $2;
                $icon =~ s/^icon\://o;
                $icon = fixImageTag( $icon, $width, $height );
                $text .= "<td valign=\"top\">$icon</td>\n";
                $text .=
"<td valign=\"top\" class=\"foswikiNoBreak\" >&nbsp; $tree[$i]->{'text'} </td>\n";
            }
            else {
                $text .=
"<td valign=\"top\" class=\"foswikiNoBreak\" > $tree[$i]->{'text'} </td>\n";
            }
        }
        $text .= '</tr></table>' . "\n";
    }
    return $text;
}

# =========================
sub fixImageTag {
    my ( $theIcon, $theWidth, $theHeight ) = @_;

    if ( $theIcon !~ /^<img/i ) {
        $theIcon .= '.gif' if ( $theIcon !~ /\.(png|gif|jpeg|jpg)$/i );
        $theIcon = "$attachUrl/$theIcon" if ( $theIcon !~ /^(\/|https?\:)/ );
        $theIcon =
            "<img src=\"$theIcon\" width=\"$theWidth\" height=\"$theHeight\""
          . " alt=\"\" border=\"0\" />";
    }
    return $theIcon;
}

# =========================

1;
__END__
Foswiki - The Free and Open Source Wiki, http://foswiki.org/

Copyright (C) 2008-2010 Foswiki Contributors. Foswiki Contributors
are listed in the AUTHORS file in the root of this distribution.
NOTE: Please extend that file, not this notice.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version. For
more details read LICENSE in the root of this distribution.

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.

As per the GPL, removal of this notice is prohibited.
