1 | <?php |
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2 | // +-----------------------------------------------------------------------+ |
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3 | // | Piwigo - a PHP based picture gallery | |
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4 | // +-----------------------------------------------------------------------+ |
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5 | // | Copyright(C) 2008-2010 Piwigo Team http://piwigo.org | |
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6 | // | Copyright(C) 2003-2008 PhpWebGallery Team http://phpwebgallery.net | |
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7 | // | Copyright(C) 2002-2003 Pierrick LE GALL http://le-gall.net/pierrick | |
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8 | // +-----------------------------------------------------------------------+ |
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9 | // | This program is free software; you can redistribute it and/or modify | |
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10 | // | it under the terms of the GNU General Public License as published by | |
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11 | // | the Free Software Foundation | |
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12 | // | | |
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13 | // | This program is distributed in the hope that it will be useful, but | |
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14 | // | WITHOUT ANY WARRANTY; without even the implied warranty of | |
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15 | // | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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16 | // | General Public License for more details. | |
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17 | // | | |
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18 | // | You should have received a copy of the GNU General Public License | |
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19 | // | along with this program; if not, write to the Free Software | |
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20 | // | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
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21 | // | USA. | |
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22 | // +-----------------------------------------------------------------------+ |
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23 | |
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24 | /** |
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25 | * Base class for monthly and weekly calendar styles |
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26 | */ |
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27 | class CalendarBase |
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28 | { |
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29 | // db column on which this calendar works |
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30 | var $date_field; |
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31 | // used for queries (INNER JOIN or normal) |
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32 | var $inner_sql; |
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33 | // |
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34 | var $calendar_levels; |
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35 | |
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36 | /** |
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37 | * Initialize the calendar |
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38 | * @param string inner_sql used for queries (INNER JOIN or normal) |
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39 | */ |
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40 | function initialize($inner_sql) |
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41 | { |
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42 | global $page; |
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43 | if ($page['chronology_field']=='posted') |
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44 | { |
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45 | $this->date_field = 'date_available'; |
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46 | } |
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47 | else |
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48 | { |
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49 | $this->date_field = 'date_creation'; |
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50 | } |
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51 | $this->inner_sql = $inner_sql; |
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52 | } |
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53 | |
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54 | function get_display_name() |
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55 | { |
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56 | global $conf, $page; |
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57 | $res = ''; |
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58 | |
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59 | for ($i=0; $i<count($page['chronology_date']); $i++) |
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60 | { |
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61 | $res .= $conf['level_separator']; |
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62 | if ( isset($page['chronology_date'][$i+1]) ) |
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63 | { |
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64 | $chronology_date = array_slice($page['chronology_date'],0, $i+1); |
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65 | $url = duplicate_index_url( |
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66 | array( 'chronology_date'=>$chronology_date ), |
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67 | array( 'start' ) |
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68 | ); |
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69 | $res .= |
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70 | '<a href="'.$url.'">' |
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71 | .$this->get_date_component_label($i, $page['chronology_date'][$i]) |
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72 | .'</a>'; |
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73 | } |
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74 | else |
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75 | { |
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76 | $res .= |
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77 | '<span class="calInHere">' |
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78 | .$this->get_date_component_label($i, $page['chronology_date'][$i]) |
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79 | .'</span>'; |
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80 | } |
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81 | } |
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82 | return $res; |
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83 | } |
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84 | |
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85 | //--------------------------------------------------------- private members --- |
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86 | /** |
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87 | * Returns a display name for a date component optionally using labels |
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88 | */ |
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89 | function get_date_component_label($level, $date_component) |
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90 | { |
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91 | $label = $date_component; |
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92 | if (isset($this->calendar_levels[$level]['labels'][$date_component])) |
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93 | { |
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94 | $label = $this->calendar_levels[$level]['labels'][$date_component]; |
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95 | } |
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96 | elseif ('any' === $date_component ) |
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97 | { |
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98 | $label = l10n('All'); |
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99 | } |
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100 | return $label; |
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101 | } |
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102 | |
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103 | /** |
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104 | * Gets a nice display name for a date to be shown in previos/next links. |
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105 | */ |
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106 | function get_date_nice_name($date) |
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107 | { |
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108 | $date_components = explode('-', $date); |
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109 | $res = ''; |
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110 | for ($i=count($date_components)-1; $i>=0; $i--) |
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111 | { |
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112 | if ('any' !== $date_components[$i]) |
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113 | { |
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114 | $label = $this->get_date_component_label($i, $date_components[$i] ); |
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115 | if ( $res!='' ) |
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116 | { |
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117 | $res .= ' '; |
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118 | } |
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119 | $res .= $label; |
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120 | } |
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121 | } |
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122 | return $res; |
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123 | } |
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124 | |
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125 | /** |
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126 | * Creates a calendar navigation bar. |
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127 | * |
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128 | * @param array date_components |
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129 | * @param array items - hash of items to put in the bar (e.g. 2005,2006) |
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130 | * @param bool show_any - adds any link to the end of the bar |
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131 | * @param bool show_empty - shows all labels even those without items |
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132 | * @param array labels - optional labels for items (e.g. Jan,Feb,...) |
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133 | * @return string the navigation bar |
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134 | */ |
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135 | function get_nav_bar_from_items($date_components, $items, |
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136 | $show_any, |
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137 | $show_empty=false, $labels=null) |
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138 | { |
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139 | global $conf, $page, $template; |
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140 | |
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141 | $nav_bar_datas=array(); |
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142 | |
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143 | if ($conf['calendar_show_empty'] and $show_empty and !empty($labels) ) |
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144 | { |
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145 | foreach ($labels as $item => $label) |
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146 | { |
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147 | if ( ! isset($items[$item]) ) |
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148 | { |
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149 | $items[$item] = -1; |
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150 | } |
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151 | } |
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152 | ksort($items); |
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153 | } |
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154 | |
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155 | foreach ($items as $item => $nb_images) |
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156 | { |
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157 | $label = $item; |
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158 | if (isset($labels[$item])) |
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159 | { |
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160 | $label = $labels[$item]; |
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161 | } |
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162 | if ($nb_images==-1) |
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163 | { |
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164 | $tmp_datas=array( |
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165 | 'LABEL'=> $label |
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166 | ); |
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167 | } |
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168 | else |
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169 | { |
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170 | $url = duplicate_index_url( |
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171 | array('chronology_date'=>array_merge($date_components,array($item))), |
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172 | array( 'start' ) |
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173 | ); |
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174 | $tmp_datas=array( |
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175 | 'LABEL'=> $label, |
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176 | 'URL' => $url |
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177 | ); |
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178 | } |
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179 | if ($nb_images > 0) |
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180 | { |
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181 | $tmp_datas['NB_IMAGES']=$nb_images; |
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182 | } |
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183 | $nav_bar_datas[]=$tmp_datas; |
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184 | |
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185 | } |
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186 | |
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187 | if ($conf['calendar_show_any'] and $show_any and count($items)>1 and |
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188 | count($date_components)<count($this->calendar_levels)-1 ) |
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189 | { |
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190 | $url = duplicate_index_url( |
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191 | array('chronology_date'=>array_merge($date_components,array('any'))), |
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192 | array( 'start' ) |
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193 | ); |
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194 | $nav_bar_datas[]=array( |
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195 | 'LABEL' => l10n('All'), |
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196 | 'URL' => $url |
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197 | ); |
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198 | } |
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199 | |
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200 | return $nav_bar_datas; |
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201 | } |
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202 | |
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203 | /** |
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204 | * Creates a calendar navigation bar for a given level. |
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205 | * |
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206 | * @param int level - the level (0-year,1-month/week,2-day) |
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207 | * @return void |
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208 | */ |
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209 | function build_nav_bar($level, $labels=null) |
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210 | { |
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211 | global $template, $conf, $page; |
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212 | |
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213 | $query = ' |
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214 | SELECT DISTINCT('.$this->calendar_levels[$level]['sql'].') as period, |
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215 | COUNT(DISTINCT id) as nb_images'. |
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216 | $this->inner_sql. |
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217 | $this->get_date_where($level).' |
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218 | GROUP BY period |
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219 | ORDER BY period ASC |
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220 | ;'; |
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221 | |
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222 | $level_items = simple_hash_from_query($query, 'period', 'nb_images'); |
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223 | $level_items = array_to_int($level_items); |
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224 | |
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225 | if ( count($level_items)==1 and |
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226 | count($page['chronology_date'])<count($this->calendar_levels)-1) |
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227 | { |
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228 | if ( ! isset($page['chronology_date'][$level]) ) |
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229 | { |
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230 | list($key) = array_keys($level_items); |
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231 | $page['chronology_date'][$level] = (int)$key; |
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232 | |
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233 | if ( $level<count($page['chronology_date']) and |
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234 | $level!=count($this->calendar_levels)-1 ) |
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235 | { |
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236 | return; |
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237 | } |
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238 | } |
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239 | } |
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240 | |
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241 | $dates = $page['chronology_date']; |
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242 | while ($level<count($dates)) |
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243 | { |
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244 | array_pop($dates); |
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245 | } |
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246 | |
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247 | $nav_bar = $this->get_nav_bar_from_items( |
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248 | $dates, |
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249 | $level_items, |
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250 | true, |
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251 | true, |
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252 | isset($labels) ? $labels : $this->calendar_levels[$level]['labels'] |
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253 | ); |
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254 | |
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255 | $template->append( |
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256 | 'chronology_navigation_bars', |
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257 | array( |
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258 | 'items' => $nav_bar, |
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259 | ) |
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260 | ); |
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261 | } |
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262 | |
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263 | /** |
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264 | * Assigns the next/previous link to the template with regards to |
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265 | * the currently choosen date. |
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266 | */ |
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267 | function build_next_prev() |
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268 | { |
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269 | global $template, $page; |
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270 | |
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271 | $prev = $next =null; |
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272 | if ( empty($page['chronology_date']) ) |
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273 | return; |
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274 | |
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275 | $sub_queries = array(); |
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276 | $nb_elements = count($page['chronology_date']); |
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277 | for ($i=0; $i<$nb_elements; $i++) |
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278 | { |
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279 | if ( 'any' === $page['chronology_date'][$i] ) |
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280 | { |
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281 | $sub_queries[] = '\'any\''; |
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282 | } |
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283 | else |
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284 | { |
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285 | $sub_queries[] = pwg_db_cast_to_text($this->calendar_levels[$i]['sql']); |
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286 | } |
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287 | } |
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288 | $query = 'SELECT '.pwg_db_concat_ws($sub_queries, '-').' AS period'; |
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289 | $query .= $this->inner_sql .' |
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290 | AND ' . $this->date_field . ' IS NOT NULL |
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291 | GROUP BY period'; |
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292 | |
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293 | $current = implode('-', $page['chronology_date'] ); |
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294 | $upper_items = array_from_query( $query, 'period'); |
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295 | $upper_items = array_to_int($upper_items); |
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296 | |
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297 | usort($upper_items, 'version_compare'); |
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298 | $upper_items_rank = array_flip($upper_items); |
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299 | if ( !isset($upper_items_rank[$current]) ) |
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300 | { |
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301 | array_push($upper_items, $current);// just in case (external link) |
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302 | usort($upper_items, 'version_compare'); |
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303 | $upper_items_rank = array_flip($upper_items); |
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304 | } |
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305 | $current_rank = $upper_items_rank[$current]; |
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306 | |
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307 | $tpl_var = array(); |
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308 | |
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309 | if ( $current_rank>0 ) |
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310 | { // has previous |
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311 | $prev = $upper_items[$current_rank-1]; |
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312 | $chronology_date = explode('-', $prev); |
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313 | $tpl_var['previous'] = |
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314 | array( |
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315 | 'LABEL' => $this->get_date_nice_name($prev), |
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316 | 'URL' => duplicate_index_url( |
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317 | array('chronology_date'=>$chronology_date), array('start') |
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318 | ) |
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319 | ); |
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320 | } |
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321 | |
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322 | if ( $current_rank < count($upper_items)-1 ) |
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323 | { // has next |
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324 | $next = $upper_items[$current_rank+1]; |
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325 | $chronology_date = explode('-', $next); |
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326 | $tpl_var['next'] = |
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327 | array( |
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328 | 'LABEL' => $this->get_date_nice_name($next), |
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329 | 'URL' => duplicate_index_url( |
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330 | array('chronology_date'=>$chronology_date), array('start') |
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331 | ) |
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332 | ); |
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333 | } |
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334 | |
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335 | if ( !empty($tpl_var) ) |
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336 | { |
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337 | $existing = & $template->get_template_vars('chronology_navigation_bars'); |
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338 | if ( !empty($existing) ) |
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339 | { |
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340 | $existing[ sizeof($existing)-1 ] = |
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341 | array_merge( $existing[ sizeof($existing)-1 ], $tpl_var); |
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342 | } |
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343 | else |
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344 | { |
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345 | $template->append( 'chronology_navigation_bars', $tpl_var ); |
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346 | } |
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347 | } |
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348 | } |
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349 | } |
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350 | ?> |
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