1 | <?php |
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2 | /* vim: set expandtab tabstop=4 shiftwidth=4: */ |
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3 | // |
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4 | // +----------------------------------------------------------------------+ |
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5 | // | PHP Version 4 | |
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6 | // +----------------------------------------------------------------------+ |
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7 | // | Copyright (c) 1997-2002 The PHP Group | |
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8 | // +----------------------------------------------------------------------+ |
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9 | // | This source file is subject to version 2.02 of the PHP license, | |
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10 | // | that is bundled with this package in the file LICENSE, and is | |
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11 | // | available at through the world-wide-web at | |
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12 | // | http://www.php.net/license/3_0.txt. | |
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13 | // | If you did not receive a copy of the PHP license and are unable to | |
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14 | // | obtain it through the world-wide-web, please send a note to | |
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15 | // | license@php.net so we can mail you a copy immediately. | |
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16 | // +----------------------------------------------------------------------+ |
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17 | // | Authors: Harry Fuecks <hfuecks@phppatterns.com> | |
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18 | // +----------------------------------------------------------------------+ |
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19 | // |
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20 | // $Id: Helper.php,v 1.5 2005/10/22 09:51:53 quipo Exp $ |
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21 | // |
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22 | /** |
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23 | * @package Calendar |
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24 | * @version $Id: Helper.php,v 1.5 2005/10/22 09:51:53 quipo Exp $ |
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25 | */ |
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26 | |
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27 | /** |
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28 | * Used by Calendar_Month_Weekdays, Calendar_Month_Weeks and Calendar_Week to |
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29 | * help with building the calendar in tabular form |
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30 | * @package Calendar |
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31 | * @access protected |
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32 | */ |
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33 | class Calendar_Table_Helper |
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34 | { |
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35 | /** |
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36 | * Instance of the Calendar object being helped. |
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37 | * @var object |
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38 | * @access private |
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39 | */ |
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40 | var $calendar; |
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41 | |
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42 | /** |
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43 | * Instance of the Calendar_Engine |
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44 | * @var object |
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45 | * @access private |
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46 | */ |
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47 | var $cE; |
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48 | |
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49 | /** |
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50 | * First day of the week |
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51 | * @access private |
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52 | * @var string |
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53 | */ |
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54 | var $firstDay; |
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55 | |
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56 | /** |
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57 | * The seven days of the week named |
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58 | * @access private |
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59 | * @var array |
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60 | */ |
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61 | var $weekDays; |
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62 | |
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63 | /** |
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64 | * Days of the week ordered with $firstDay at the beginning |
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65 | * @access private |
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66 | * @var array |
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67 | */ |
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68 | var $daysOfWeek = array(); |
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69 | |
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70 | /** |
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71 | * Days of the month built from days of the week |
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72 | * @access private |
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73 | * @var array |
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74 | */ |
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75 | var $daysOfMonth = array(); |
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76 | |
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77 | /** |
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78 | * Number of weeks in month |
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79 | * @var int |
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80 | * @access private |
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81 | */ |
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82 | var $numWeeks = null; |
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83 | |
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84 | /** |
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85 | * Number of emtpy days before real days begin in month |
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86 | * @var int |
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87 | * @access private |
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88 | */ |
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89 | var $emptyBefore = 0; |
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90 | |
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91 | /** |
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92 | * Constructs Calendar_Table_Helper |
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93 | * @param object Calendar_Month_Weekdays, Calendar_Month_Weeks, Calendar_Week |
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94 | * @param int (optional) first day of the week e.g. 1 for Monday |
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95 | * @access protected |
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96 | */ |
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97 | function Calendar_Table_Helper(& $calendar, $firstDay=null) |
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98 | { |
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99 | $this->calendar = & $calendar; |
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100 | $this->cE = & $calendar->getEngine(); |
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101 | if (is_null($firstDay)) { |
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102 | $firstDay = $this->cE->getFirstDayOfWeek( |
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103 | $this->calendar->thisYear(), |
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104 | $this->calendar->thisMonth(), |
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105 | $this->calendar->thisDay() |
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106 | ); |
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107 | } |
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108 | $this->firstDay = $firstDay; |
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109 | $this->setFirstDay(); |
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110 | $this->setDaysOfMonth(); |
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111 | } |
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112 | |
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113 | /** |
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114 | * Constructs $this->daysOfWeek based on $this->firstDay |
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115 | * @return void |
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116 | * @access private |
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117 | */ |
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118 | function setFirstDay() |
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119 | { |
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120 | $weekDays = $this->cE->getWeekDays( |
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121 | $this->calendar->thisYear(), |
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122 | $this->calendar->thisMonth(), |
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123 | $this->calendar->thisDay() |
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124 | ); |
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125 | $endDays = array(); |
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126 | $tmpDays = array(); |
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127 | $begin = false; |
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128 | foreach ($weekDays as $day) { |
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129 | if ($begin) { |
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130 | $endDays[] = $day; |
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131 | } else if ($day === $this->firstDay) { |
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132 | $begin = true; |
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133 | $endDays[] = $day; |
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134 | } else { |
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135 | $tmpDays[] = $day; |
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136 | } |
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137 | } |
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138 | $this->daysOfWeek = array_merge($endDays, $tmpDays); |
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139 | } |
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140 | |
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141 | /** |
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142 | * Constructs $this->daysOfMonth |
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143 | * @return void |
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144 | * @access private |
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145 | */ |
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146 | function setDaysOfMonth() |
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147 | { |
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148 | $this->daysOfMonth = $this->daysOfWeek; |
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149 | $daysInMonth = $this->cE->getDaysInMonth( |
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150 | $this->calendar->thisYear(), $this->calendar->thisMonth()); |
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151 | $firstDayInMonth = $this->cE->getFirstDayInMonth( |
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152 | $this->calendar->thisYear(), $this->calendar->thisMonth()); |
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153 | $this->emptyBefore=0; |
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154 | foreach ($this->daysOfMonth as $dayOfWeek) { |
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155 | if ($firstDayInMonth == $dayOfWeek) { |
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156 | break; |
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157 | } |
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158 | $this->emptyBefore++; |
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159 | } |
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160 | $this->numWeeks = ceil( |
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161 | ($daysInMonth + $this->emptyBefore) |
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162 | / |
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163 | $this->cE->getDaysInWeek( |
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164 | $this->calendar->thisYear(), |
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165 | $this->calendar->thisMonth(), |
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166 | $this->calendar->thisDay() |
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167 | ) |
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168 | ); |
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169 | for ($i=1; $i < $this->numWeeks; $i++) { |
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170 | $this->daysOfMonth = |
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171 | array_merge($this->daysOfMonth, $this->daysOfWeek); |
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172 | } |
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173 | } |
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174 | |
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175 | /** |
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176 | * Returns the first day of the month |
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177 | * @see Calendar_Engine_Interface::getFirstDayOfWeek() |
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178 | * @return int |
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179 | * @access protected |
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180 | */ |
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181 | function getFirstDay() |
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182 | { |
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183 | return $this->firstDay; |
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184 | } |
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185 | |
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186 | /** |
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187 | * Returns the order array of days in a week |
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188 | * @return int |
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189 | * @access protected |
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190 | */ |
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191 | function getDaysOfWeek() |
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192 | { |
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193 | return $this->daysOfWeek; |
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194 | } |
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195 | |
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196 | /** |
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197 | * Returns the number of tabular weeks in a month |
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198 | * @return int |
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199 | * @access protected |
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200 | */ |
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201 | function getNumWeeks() |
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202 | { |
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203 | return $this->numWeeks; |
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204 | } |
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205 | |
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206 | /** |
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207 | * Returns the number of real days + empty days |
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208 | * @return int |
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209 | * @access protected |
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210 | */ |
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211 | function getNumTableDaysInMonth() |
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212 | { |
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213 | return count($this->daysOfMonth); |
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214 | } |
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215 | |
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216 | /** |
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217 | * Returns the number of empty days before the real days begin |
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218 | * @return int |
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219 | * @access protected |
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220 | */ |
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221 | function getEmptyDaysBefore() |
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222 | { |
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223 | return $this->emptyBefore; |
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224 | } |
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225 | |
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226 | /** |
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227 | * Returns the index of the last real day in the month |
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228 | * @todo Potential performance optimization with static |
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229 | * @return int |
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230 | * @access protected |
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231 | */ |
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232 | function getEmptyDaysAfter() |
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233 | { |
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234 | // Causes bug when displaying more than one month |
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235 | // static $index; |
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236 | // if (!isset($index)) { |
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237 | $index = $this->getEmptyDaysBefore() + $this->cE->getDaysInMonth( |
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238 | $this->calendar->thisYear(), $this->calendar->thisMonth()); |
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239 | // } |
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240 | return $index; |
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241 | } |
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242 | |
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243 | /** |
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244 | * Returns the index of the last real day in the month, relative to the |
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245 | * beginning of the tabular week it is part of |
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246 | * @return int |
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247 | * @access protected |
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248 | */ |
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249 | function getEmptyDaysAfterOffset() |
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250 | { |
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251 | $eAfter = $this->getEmptyDaysAfter(); |
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252 | return $eAfter - ( |
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253 | $this->cE->getDaysInWeek( |
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254 | $this->calendar->thisYear(), |
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255 | $this->calendar->thisMonth(), |
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256 | $this->calendar->thisDay() |
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257 | ) * ($this->numWeeks-1) ); |
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258 | } |
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259 | |
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260 | /** |
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261 | * Returns the timestamp of the first day of the current week |
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262 | */ |
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263 | function getWeekStart($y, $m, $d, $firstDay=1) |
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264 | { |
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265 | $dow = $this->cE->getDayOfWeek($y, $m, $d); |
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266 | if ($dow > $firstDay) { |
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267 | $d -= ($dow - $firstDay); |
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268 | } |
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269 | if ($dow < $firstDay) { |
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270 | $d -= ( |
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271 | $this->cE->getDaysInWeek( |
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272 | $this->calendar->thisYear(), |
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273 | $this->calendar->thisMonth(), |
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274 | $this->calendar->thisDay() |
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275 | ) - $firstDay + $dow); |
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276 | } |
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277 | return $this->cE->dateToStamp($y, $m, $d); |
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278 | } |
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279 | } |
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280 | ?> |
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