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 | * Contains the Calendar_Decorator_Wrapper class
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6 | *
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7 | * PHP versions 4 and 5
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8 | *
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9 | * LICENSE: Redistribution and use in source and binary forms, with or without
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10 | * modification, are permitted provided that the following conditions are met:
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11 | * 1. Redistributions of source code must retain the above copyright
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12 | * notice, this list of conditions and the following disclaimer.
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13 | * 2. Redistributions in binary form must reproduce the above copyright
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14 | * notice, this list of conditions and the following disclaimer in the
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15 | * documentation and/or other materials provided with the distribution.
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16 | * 3. The name of the author may not be used to endorse or promote products
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17 | * derived from this software without specific prior written permission.
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18 | *
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19 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
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20 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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21 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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22 | * IN NO EVENT SHALL THE FREEBSD PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY
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23 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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24 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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25 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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26 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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27 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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28 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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29 | *
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30 | * @category Date and Time
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31 | * @package Calendar
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32 | * @author Harry Fuecks <hfuecks@phppatterns.com>
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33 | * @copyright 2003-2007 Harry Fuecks
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34 | * @license http://www.debian.org/misc/bsd.license BSD License (3 Clause)
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35 | * @version CVS: $Id: Helper.php 246317 2007-11-16 20:05:32Z quipo $
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36 | * @link http://pear.php.net/package/Calendar
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37 | */
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38 |
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39 | /**
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40 | * Used by Calendar_Month_Weekdays, Calendar_Month_Weeks and Calendar_Week to
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41 | * help with building the calendar in tabular form
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42 | *
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43 | * @category Date and Time
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44 | * @package Calendar
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45 | * @author Harry Fuecks <hfuecks@phppatterns.com>
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46 | * @copyright 2003-2007 Harry Fuecks
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47 | * @license http://www.debian.org/misc/bsd.license BSD License (3 Clause)
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48 | * @link http://pear.php.net/package/Calendar
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49 | * @access public
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50 | */
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51 | class Calendar_Table_Helper
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52 | {
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53 | /**
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54 | * Instance of the Calendar object being helped.
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55 | * @var object
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56 | * @access private
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57 | */
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58 | var $calendar;
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59 |
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60 | /**
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61 | * Instance of the Calendar_Engine
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62 | * @var object
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63 | * @access private
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64 | */
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65 | var $cE;
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66 |
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67 | /**
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68 | * First day of the week
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69 | * @access private
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70 | * @var string
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71 | */
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72 | var $firstDay;
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73 |
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74 | /**
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75 | * The seven days of the week named
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76 | * @access private
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77 | * @var array
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78 | */
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79 | var $weekDays;
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80 |
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81 | /**
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82 | * Days of the week ordered with $firstDay at the beginning
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83 | * @access private
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84 | * @var array
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85 | */
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86 | var $daysOfWeek = array();
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87 |
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88 | /**
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89 | * Days of the month built from days of the week
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90 | * @access private
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91 | * @var array
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92 | */
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93 | var $daysOfMonth = array();
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94 |
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95 | /**
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96 | * Number of weeks in month
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97 | * @var int
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98 | * @access private
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99 | */
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100 | var $numWeeks = null;
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101 |
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102 | /**
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103 | * Number of emtpy days before real days begin in month
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104 | * @var int
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105 | * @access private
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106 | */
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107 | var $emptyBefore = 0;
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108 |
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109 | /**
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110 | * Constructs Calendar_Table_Helper
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111 | *
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112 | * @param object &$calendar Calendar_Month_Weekdays, Calendar_Month_Weeks, Calendar_Week
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113 | * @param int $firstDay (optional) first day of the week e.g. 1 for Monday
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114 | *
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115 | * @access protected
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116 | */
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117 | function Calendar_Table_Helper(& $calendar, $firstDay=null)
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118 | {
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119 | $this->calendar = & $calendar;
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120 | $this->cE = & $calendar->getEngine();
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121 | if (is_null($firstDay)) {
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122 | $firstDay = $this->cE->getFirstDayOfWeek(
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123 | $this->calendar->thisYear(),
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124 | $this->calendar->thisMonth(),
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125 | $this->calendar->thisDay()
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126 | );
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127 | }
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128 | $this->firstDay = $firstDay;
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129 | $this->setFirstDay();
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130 | $this->setDaysOfMonth();
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131 | }
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132 |
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133 | /**
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134 | * Constructs $this->daysOfWeek based on $this->firstDay
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135 | *
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136 | * @return void
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137 | * @access private
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138 | */
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139 | function setFirstDay()
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140 | {
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141 | $weekDays = $this->cE->getWeekDays(
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142 | $this->calendar->thisYear(),
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143 | $this->calendar->thisMonth(),
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144 | $this->calendar->thisDay()
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145 | );
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146 | $endDays = array();
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147 | $tmpDays = array();
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148 | $begin = false;
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149 | foreach ($weekDays as $day) {
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150 | if ($begin) {
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151 | $endDays[] = $day;
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152 | } else if ($day === $this->firstDay) {
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153 | $begin = true;
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154 | $endDays[] = $day;
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155 | } else {
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156 | $tmpDays[] = $day;
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157 | }
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158 | }
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159 | $this->daysOfWeek = array_merge($endDays, $tmpDays);
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160 | }
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161 |
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162 | /**
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163 | * Constructs $this->daysOfMonth
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164 | *
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165 | * @return void
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166 | * @access private
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167 | */
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168 | function setDaysOfMonth()
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169 | {
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170 | $this->daysOfMonth = $this->daysOfWeek;
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171 | $daysInMonth = $this->cE->getDaysInMonth(
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172 | $this->calendar->thisYear(), $this->calendar->thisMonth());
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173 | $firstDayInMonth = $this->cE->getFirstDayInMonth(
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174 | $this->calendar->thisYear(), $this->calendar->thisMonth());
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175 | $this->emptyBefore=0;
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176 | foreach ($this->daysOfMonth as $dayOfWeek) {
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177 | if ($firstDayInMonth == $dayOfWeek) {
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178 | break;
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179 | }
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180 | $this->emptyBefore++;
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181 | }
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182 | $this->numWeeks = ceil(
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183 | ($daysInMonth + $this->emptyBefore)
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184 | /
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185 | $this->cE->getDaysInWeek(
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186 | $this->calendar->thisYear(),
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187 | $this->calendar->thisMonth(),
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188 | $this->calendar->thisDay()
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189 | )
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190 | );
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191 | for ($i=1; $i < $this->numWeeks; $i++) {
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192 | $this->daysOfMonth =
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193 | array_merge($this->daysOfMonth, $this->daysOfWeek);
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194 | }
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195 | }
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196 |
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197 | /**
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198 | * Returns the first day of the month
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199 | *
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200 | * @return int
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201 | * @access protected
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202 | * @see Calendar_Engine_Interface::getFirstDayOfWeek()
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203 | */
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204 | function getFirstDay()
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205 | {
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206 | return $this->firstDay;
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207 | }
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208 |
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209 | /**
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210 | * Returns the order array of days in a week
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211 | *
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212 | * @return int
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213 | * @access protected
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214 | */
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215 | function getDaysOfWeek()
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216 | {
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217 | return $this->daysOfWeek;
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218 | }
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219 |
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220 | /**
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221 | * Returns the number of tabular weeks in a month
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222 | *
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223 | * @return int
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224 | * @access protected
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225 | */
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226 | function getNumWeeks()
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227 | {
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228 | return $this->numWeeks;
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229 | }
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230 |
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231 | /**
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232 | * Returns the number of real days + empty days
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233 | *
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234 | * @return int
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235 | * @access protected
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236 | */
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237 | function getNumTableDaysInMonth()
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238 | {
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239 | return count($this->daysOfMonth);
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240 | }
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241 |
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242 | /**
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243 | * Returns the number of empty days before the real days begin
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244 | *
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245 | * @return int
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246 | * @access protected
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247 | */
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248 | function getEmptyDaysBefore()
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249 | {
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250 | return $this->emptyBefore;
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251 | }
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252 |
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253 | /**
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254 | * Returns the index of the last real day in the month
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255 | *
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256 | * @todo Potential performance optimization with static
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257 | * @return int
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258 | * @access protected
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259 | */
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260 | function getEmptyDaysAfter()
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261 | {
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262 | // Causes bug when displaying more than one month
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263 | //static $index;
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264 | //if (!isset($index)) {
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265 | $index = $this->getEmptyDaysBefore() + $this->cE->getDaysInMonth(
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266 | $this->calendar->thisYear(), $this->calendar->thisMonth());
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267 | //}
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268 | return $index;
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269 | }
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270 |
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271 | /**
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272 | * Returns the index of the last real day in the month, relative to the
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273 | * beginning of the tabular week it is part of
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274 | *
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275 | * @return int
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276 | * @access protected
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277 | */
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278 | function getEmptyDaysAfterOffset()
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279 | {
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280 | $eAfter = $this->getEmptyDaysAfter();
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281 | return $eAfter - (
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282 | $this->cE->getDaysInWeek(
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283 | $this->calendar->thisYear(),
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284 | $this->calendar->thisMonth(),
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285 | $this->calendar->thisDay()
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286 | ) * ($this->numWeeks-1));
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287 | }
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288 |
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289 | /**
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290 | * Returns the timestamp of the first day of the current week
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291 | *
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292 | * @param int $y year
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293 | * @param int $m month
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294 | * @param int $d day
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295 | * @param int $firstDay first day of the week (default 1 = Monday)
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296 | *
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297 | * @return int timestamp
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298 | */
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299 | function getWeekStart($y, $m, $d, $firstDay=1)
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300 | {
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301 | $dow = $this->cE->getDayOfWeek($y, $m, $d);
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302 | if ($dow > $firstDay) {
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303 | $d -= ($dow - $firstDay);
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304 | }
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305 | if ($dow < $firstDay) {
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306 | $d -= (
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307 | $this->cE->getDaysInWeek(
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308 | $this->calendar->thisYear(),
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309 | $this->calendar->thisMonth(),
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310 | $this->calendar->thisDay()
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311 | ) - $firstDay + $dow);
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312 | }
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313 | return $this->cE->dateToStamp($y, $m, $d);
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314 | }
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315 | }
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316 | ?> |
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