annotate Lib/DOM/Providers/Gallery.pm @ 11:75980091813b

DOM и навигация
author Sergey
date Wed, 02 Sep 2009 17:47:44 +0400
parents 03e58a454b20
children 16ada169ca75
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1 use strict;
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2 package DOM::Gallery;
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3 use Common;
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4 our @ISA = qw(Object);
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5
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6 BEGIN {
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7 DeclareProperty(Id => ACCESS_READ);
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8 DeclareProperty(Name => ACCESS_READ);
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9 DeclareProperty(Description => ACCESS_READ);
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10 DeclareProperty(Images => ACCESS_READ);
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11 DeclareProperty(CurrentImage => ACCESS_READ);
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12 DeclareProperty(NextImage => ACCESS_READ);
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13 DeclareProperty(PrevImage => ACCESS_READ);
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14 }
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15
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16 sub CTOR {
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17 my ($this,%args) = @_;
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18
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19 $this->{$Id} = $args{'Id'};
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20 $this->{$Name} = $args{'Name'};
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21 $this->{$Description} = $args{'Description'};
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22 }
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23
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24 sub GroupList {
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25 my ($this,$GroupCount, $option) = @_;
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26
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27 my @images = map { $this->{$Images}->{$_} } sort keys %{$this->{$Images}};
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28
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29 my @listGroups;
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30 my $group;
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31 for (my $i = 0; $i < $GroupCount; $i++ ) {
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32 #last unless scalar(@images) or $option =~ /align/i;
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33 push (@$group, shift(@images));
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34 if ($i == $GroupCount - 1) {
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35 push @listGroups, $group;
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36 undef $group;
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37 $i = -1;
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38 last if not scalar(@images);
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39 }
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40 }
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41
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42 return \@listGroups;
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43 }
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44
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45 sub SelectImage {
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46 my ($this,$imageId) = @_;
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47
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48 my @images = sort keys %{$this->{$Images}};
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49
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50 for (my $i=0; $i <= @images; $i++) {
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51 if ($images[$i] eq $imageId) {
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52 $this->{$CurrentImage} = $this->{$Images}->{$images[$i]};
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53 $this->{$PrevImage} = $i-1 >= 0 ? $this->{$Images}->{$images[$i-1]} : undef;
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54 $this->{$NextImage} = $i+1 < @images ? $this->{$Images}->{$images[$i+1]} : undef;
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55 return 1;
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56 }
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57 }
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58 die new Exception("An image '$imageId' not found in the gallery '$this->{$Id}'");
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59 }
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60
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61 sub AddImage {
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62 my ($this,$image) = @_;
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63
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64 $this->{$Images}->{$image->Id()} = $image;
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65 }
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66
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67 package DOM::Gallery::Image;
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68 use Common;
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69 our @ISA = qw(Object);
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70 BEGIN {
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71 DeclareProperty(Id => ACCESS_READ);
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72 DeclareProperty(Name => ACCESS_READ);
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73 DeclareProperty(Gallery => ACCESS_READ);
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74 DeclareProperty(URL => ACCESS_READ);
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75 DeclareProperty(ThumbURL => ACCESS_READ);
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76 }
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77
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78 sub CTOR {
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79 my ($this,%args) = @_;
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80
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81 $this->{$Id} = $args{'Id'} or die new Exception ('An Id should be specified for an image');
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82 $this->{$Name} = $args{'Name'};
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83 $this->{$Gallery} = $args{'Gallery'} or die new Exception('An Gallery should be specified for an image');
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84 $this->{$URL} = $args{'URL'};
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85 $this->{$ThumbURL} = $args{'ThumbURL'};
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86 }
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87
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88 package DOM::Providers::Gallery;
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89 use Common;
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90 our @ISA = qw(Object);
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91
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92 our $RepoPath;
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93 our $ImagesURL;
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94 our $Encoding;
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95
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96 BEGIN {
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97 DeclareProperty(GalleryCache => ACCESS_NONE);
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98 DeclareProperty(Repository => ACCESS_NONE);
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99 }
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100
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101 sub CTOR {
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102 my ($this,%args) = @_;
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103
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104 $this->{$Repository} = $args {'Repository'} or die new Exception('A path to an galleries repository should be specified');
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105 }
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106
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107 sub GetProviderInfo() {
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108 return {
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109 Name => 'Gallery',
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110 Host => 'DOM::Site',
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111 Methods => {
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112 LoadGallery => \&SiteLoadGallery #($this,$site,$galleryId)
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113 }
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114 };
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115 }
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116
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117 sub SiteLoadGallery {
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118 my ($this,$site,$galleryId) = @_;
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119
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120 my $gallery = $this->LoadGallery($galleryId);
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121
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122 $site->RegisterObject('Gallery',$gallery);
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123
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124 return $gallery;
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125 }
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126
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127 sub LoadGallery {
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128 my ($this,$galleryId) = @_;
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129
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130 die new Exception("Invalid Gallery Id: $galleryId") if $galleryId =~ /\\|\//;
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131
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132 my $galleryIdPath = $galleryId;
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133 $galleryIdPath =~ s/\./\//g;
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134
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135 my $GalleryPath = $this->{$Repository} . $galleryIdPath .'/';
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136
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137 die new Exception("A gallery '$galleryId' isn't found",$GalleryPath) if not -d $GalleryPath;
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138
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139 open my $hDesc, "<:encoding($Encoding)", $GalleryPath.'index.htm' or die new Exception("Invalid gallery: $galleryId","Failed to open ${GalleryPath}index.htm: $!");
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140
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141 my $GalleryName;
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142 while (<$hDesc>) {
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143 if (/<title>(.+?)<\/title>/i) {
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144 $GalleryName = $1;
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145 last;
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146 }
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147 }
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148 undef $hDesc;
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149
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150 my $ImagesPath = $GalleryPath.'images/';
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151 my $ThumbsPath = $GalleryPath.'thumbnails/';
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152
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153 opendir my $hImages, $ImagesPath or die new Exception("Invalid gallery: $galleryId","Can't open images repository: $!");
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154
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155 my @imageIds = grep { -f $ImagesPath.$_ } readdir $hImages;
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156
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157 my %imageNames;
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158
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159 if (-f $GalleryPath.'description.txt') {
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160 local $/="\n";
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161 if (open my $hfile,"<:encoding($Encoding)",$GalleryPath.'description.txt') {
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162 while (<$hfile>) {
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163 chomp;
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164 my ($id,$name) = split /\s*=\s*/;
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165 $imageNames{$id} = $name;
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166 }
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167 }
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168 }
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169
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170 undef $hImages;
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171
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172 if ($Common::Debug) {
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173 foreach (@imageIds) {
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174 warn "A tumb isn't found for an image: $_" if not -f $ThumbsPath.$_;
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175 }
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176 }
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177
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178 my $gallery = new DOM::Gallery(Id => $galleryId, Name => $GalleryName);
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179
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180 foreach my $imageId (@imageIds) {
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181 $gallery->AddImage(new DOM::Gallery::Image(
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182 Id => $imageId,
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183 URL => $ImagesURL.$galleryIdPath.'/images/'.$imageId,
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184 ThumbURL => $ImagesURL.$galleryIdPath.'/thumbnails/'.$imageId,
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185 Gallery => $gallery,
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186 Name => $imageNames{$imageId}
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187 )
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188 );
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189 }
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190
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191 return $gallery;
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192 }
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193
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194 sub construct {
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195 my $self = shift;
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196
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197 return new DOM::Providers::Gallery( Repository => $RepoPath);
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198 }
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199
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200 1;