1 | <?php |
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2 | |
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3 | /** |
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4 | * Tool that displays a list and an edit panel |
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5 | * |
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6 | * @author fpvanagthoven |
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7 | */ |
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8 | class QuestionCreationTool { |
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9 | |
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10 | private $questions; |
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11 | |
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12 | public function __construct($questions) { |
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13 | $this->questions = $questions; |
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14 | |
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15 | $this->loadQuestionsToJavascript(); |
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16 | $this->javascript(); |
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17 | $this->displayList(); |
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18 | $this->displayEditPanel(); |
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19 | } |
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20 | |
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21 | /** |
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22 | * Loads the questions that PHP retrieved from database |
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23 | * into javascript. This is done so that the page does not need |
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24 | * to refresh in order to load an entire question in to the form. |
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25 | * |
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26 | * The javascript array will have question codes as keys. |
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27 | * The value is a javascript Question object that gets created from |
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28 | * the PHP object. |
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29 | */ |
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30 | private function loadQuestionsToJavascript() |
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31 | { |
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32 | // ?><script type="text/javascript"> |
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33 | document.questions = array(); |
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34 | |
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35 | //<?php |
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36 | // foreach ($this->questions as $question) { |
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37 | // ?> |
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38 | |
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39 | |
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40 | |
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41 | //<?php |
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42 | // } |
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43 | // ?></script><?php |
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44 | } |
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45 | |
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46 | private function javascript() { |
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47 | ?> |
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48 | <script type="text/javascript"> |
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49 | function handleType(select) |
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50 | { |
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51 | var type = select.valueOf().value; |
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52 | clearSpecifications(); |
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53 | |
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54 | /* set answerCount for options */ |
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55 | document.getElementById("answerSpecifications").answerCount = 1; |
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56 | |
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57 | switch (type) { |
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58 | case "text": |
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59 | break; |
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60 | case "mc": |
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61 | addOption(); |
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62 | break; |
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63 | case "int": |
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64 | minMax(); |
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65 | break; |
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66 | case "checkboxes": |
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67 | addOption(); |
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68 | break; |
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69 | case "scale": |
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70 | minMaxIncr(); |
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71 | break; |
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72 | default: |
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73 | |
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74 | break; |
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75 | } |
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76 | |
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77 | } |
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78 | |
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79 | function clearSpecifications() |
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80 | { |
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81 | var specs = document.getElementById("answerSpecifications"); |
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82 | specs.innerHTML = ""; |
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83 | specs.clicked = null; |
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84 | specs.lastAnswer = null; |
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85 | |
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86 | var questionType = document.getElementById("questionType"); |
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87 | var buttons = document.getElementById("questionButtons"); |
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88 | if(buttons != null) |
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89 | questionType.removeChild(buttons); |
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90 | } |
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91 | |
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92 | function addOption() |
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93 | { |
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94 | var specs = document.getElementById("answerSpecifications"); |
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95 | |
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96 | addAddRemoveOptionButtonsOnce(specs); |
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97 | addAnswerInput(specs); |
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98 | |
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99 | } |
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100 | |
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101 | function removeOption() |
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102 | { |
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103 | var specs = document.getElementById("answerSpecifications"); |
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104 | |
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105 | if(specs.lastAnswer.prev != null) |
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106 | { |
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107 | specs.removeChild(specs.lastAnswer); |
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108 | specs.lastAnswer = specs.lastAnswer.prev; |
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109 | specs.answerCount--; |
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110 | } |
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111 | } |
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112 | |
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113 | function addAnswerInput(specs) |
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114 | { |
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115 | var answerCount = specs.answerCount; |
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116 | |
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117 | /* set value for option textbox */ |
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118 | var optionStr = "Option " + answerCount; |
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119 | |
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120 | /* the input textbox */ |
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121 | var answerInput = document.createElement("input"); |
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122 | answerInput.setAttribute("type", "text"); |
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123 | answerInput.setAttribute("name", "ans" + answerCount); |
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124 | answerInput.setAttribute("value", optionStr); |
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125 | answerInput.className = "answerInput"; |
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126 | |
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127 | specs.appendChild(answerInput); |
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128 | |
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129 | /* Singly linked list */ |
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130 | answerInput.prev = specs.lastAnswer; // remember last one |
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131 | specs.lastAnswer = answerInput; // new lastAnswer |
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132 | |
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133 | specs.answerCount++; |
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134 | } |
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135 | |
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136 | function addAddRemoveOptionButtonsOnce(specs) |
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137 | { |
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138 | if (specs.clicked == null) |
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139 | { |
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140 | var buttonsDiv = document.createElement("div"); |
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141 | buttonsDiv.id = "questionButtons"; |
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142 | buttonsDiv.style.display = "inline"; |
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143 | var typeBox = document.getElementById("questionType"); |
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144 | typeBox.appendChild(buttonsDiv); |
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145 | |
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146 | addAddOptionButton(buttonsDiv); |
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147 | addRemoveOptionButton(buttonsDiv); |
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148 | |
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149 | specs.clicked = true; |
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150 | } |
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151 | } |
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152 | |
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153 | function addAddOptionButton(buttonsDiv) |
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154 | { |
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155 | var addOpt = document.createElement("input"); |
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156 | addOpt.setAttribute("type", "button"); |
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157 | addOpt.setAttribute("id", "addOpt"); |
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158 | addOpt.setAttribute("class", "surveyButton"); |
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159 | addOpt.setAttribute("onclick", "addOption()"); |
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160 | addOpt.setAttribute("value", "Add Option"); |
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161 | buttonsDiv.appendChild(addOpt); |
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162 | } |
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163 | |
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164 | function addRemoveOptionButton(buttonsDiv) |
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165 | { |
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166 | var removeOpt = document.createElement("input"); |
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167 | removeOpt.setAttribute("type", "button"); |
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168 | removeOpt.className = "surveyButton"; |
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169 | removeOpt.setAttribute("onclick", "removeOption()"); |
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170 | removeOpt.setAttribute("value", "x"); |
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171 | buttonsDiv.appendChild(removeOpt); |
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172 | } |
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173 | |
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174 | function minMax(min, max) |
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175 | { |
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176 | if (min == null) |
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177 | var min = ''; |
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178 | if (max == null) |
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179 | var max = ''; |
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180 | |
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181 | var specs = document.getElementById("answerSpecifications"); |
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182 | |
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183 | var answerDiv = document.createElement("div"); |
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184 | |
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185 | answerDiv.className = "answerDiv"; |
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186 | answerDiv.innerHTML = "<label for='min'>Min</label><input type='text' class='intBox' onchange='checkInt(this)' value='" + min + "' name='ans1' />" + |
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187 | "<label for='max'>Max</label><input type='text' class='intBox' onchange='checkInt(this)' value='" + max + "' name='ans2' />"; |
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188 | |
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189 | specs.appendChild(answerDiv); |
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190 | } |
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191 | |
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192 | function checkInt(input) |
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193 | { |
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194 | input.style.borderWidth = '1px' ; |
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195 | var value = input.value; |
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196 | if (isNaN(value)) |
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197 | { |
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198 | input.style.borderColor = 'red'; |
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199 | input.checkPassed = 'no'; |
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200 | } |
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201 | else |
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202 | { |
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203 | input.style.border = '1px solid #888;'; |
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204 | input.checkPassed = null; |
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205 | } |
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206 | } |
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207 | |
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208 | function minMaxIncr(left, right, incr) |
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209 | { |
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210 | if (left == null) |
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211 | var left = ''; |
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212 | else |
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213 | left.replace("'", "'"); |
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214 | if (right == null) |
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215 | var right = ''; |
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216 | else |
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217 | right.replace("'", "'"); |
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218 | if (incr == null) |
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219 | var incr = ''; |
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220 | |
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221 | var specs = document.getElementById("answerSpecifications"); |
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222 | |
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223 | var answerDiv = document.createElement("div"); |
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224 | answerDiv.className = "answerDiv"; |
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225 | |
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226 | var leftLabel = document.createElement("label"); |
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227 | var rightLabel = document.createElement("label"); |
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228 | var scaleLabel = document.createElement("label"); |
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229 | leftLabel.innerHTML = "Left label"; |
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230 | rightLabel.innerHTML = "Right label"; |
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231 | scaleLabel.innerHTML = "Scale count"; |
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232 | |
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233 | var leftInput = document.createElement("input"); |
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234 | leftInput.type = "text"; |
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235 | leftInput.value = left; |
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236 | leftInput.name= "ans1"; |
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237 | leftInput.setAttribute("onchange", "handleAnswerChange()"); |
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238 | |
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239 | var rightInput = document.createElement("input"); |
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240 | rightInput.type = "text"; |
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241 | rightInput.value = right; |
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242 | rightInput.name = "ans2"; |
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243 | rightInput.setAttribute("onchange", "handleAnswerChange()"); |
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244 | |
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245 | var scaleInput = document.createElement("input"); |
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246 | scaleInput.type = "text"; |
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247 | scaleInput.className = "intBox"; |
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248 | scaleInput.value = incr; |
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249 | scaleInput.setAttribute("onblur", "checkInt(this)"); |
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250 | scaleInput.setAttribute("onchange", ""); |
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251 | scaleInput.name = "ans3"; |
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252 | |
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253 | answerDiv.appendChild(leftLabel); |
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254 | answerDiv.appendChild(leftInput); |
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255 | answerDiv.appendChild(rightLabel); |
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256 | answerDiv.appendChild(rightInput); |
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257 | answerDiv.appendChild(scaleLabel); |
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258 | answerDiv.appendChild(scaleInput); |
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259 | |
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260 | specs.appendChild(answerDiv); |
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261 | } |
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262 | |
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263 | function newCategory() |
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264 | { |
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265 | var categoryBox = document.getElementById("categoryBox"); |
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266 | categoryBox.innerHTML = ""; |
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267 | |
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268 | var categoryInput = document.createElement("input"); |
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269 | categoryInput.name = "questionCategory"; |
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270 | |
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271 | categoryBox.appendChild(categoryInput); |
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272 | } |
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273 | |
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274 | function clearFields() |
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275 | { |
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276 | clearCategory(); |
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277 | clearCode(); |
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278 | clearTitle(); |
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279 | clearDescription(); |
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280 | clearType(); |
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281 | } |
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282 | |
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283 | function clearCategory() |
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284 | { |
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285 | var categoryBox = document.getElementById("categoryBox"); |
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286 | categoryBox.innerHTML = ""; |
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287 | |
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288 | var questionCategorySelect = document.createElement("select"); |
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289 | questionCategorySelect.setAttribute("name", "questionCategory"); |
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290 | questionCategorySelect.id = "questionCategorySelect"; |
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291 | |
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292 | var newCategoryButton = document.createElement("input"); |
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293 | newCategoryButton.setAttribute("type", "button"); |
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294 | newCategoryButton.setAttribute("onclick", "newCategory()"); |
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295 | newCategoryButton.setAttribute("value", "New Category"); |
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296 | newCategoryButton.className = "surveyButton"; |
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297 | |
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298 | categoryBox.appendChild(questionCategorySelect); |
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299 | categoryBox.appendChild(newCategoryButton); |
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300 | } |
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301 | |
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302 | function clearCode() |
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303 | { |
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304 | var codeInput = document.getElementById("questionCode"); |
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305 | codeInput.value = ""; |
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306 | } |
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307 | |
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308 | function clearTitle() |
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309 | { |
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310 | var titleInput = document.getElementById("questionTitle"); |
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311 | titleInput.value =""; |
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312 | } |
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313 | |
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314 | function clearDescription() |
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315 | { |
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316 | var descriptionInput = document.getElementById("questionDescription"); |
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317 | descriptionInput.value = ""; |
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318 | } |
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319 | |
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320 | function clearType() |
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321 | { |
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322 | var typeSelect = document.getElementById("questionTypeSelect"); |
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323 | typeSelect.selectedIndex = 0; |
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324 | clearSpecifications(); |
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325 | } |
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326 | |
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327 | </script> |
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328 | <?php |
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329 | } |
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330 | |
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331 | private function displayList() { |
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332 | ?> |
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333 | <div id="questionListWrapper"> |
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334 | <select id="questionsList" size="9999"> |
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335 | <?php $this->populateList(); ?> |
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336 | </select> |
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337 | </div> |
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338 | <?php |
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339 | } |
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340 | |
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341 | private function displayEditPanel() { |
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342 | ?> |
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343 | <div id="questionCreation" class="floatLeft"> |
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344 | <?php $this->displayForm(); ?> |
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345 | </div> |
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346 | <?php |
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347 | } |
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348 | |
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349 | private function displayForm() { |
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350 | ?> |
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351 | <form id="questionEditForm" method="post" action="" onsubmit=""> |
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352 | <table class="questionTable"> |
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353 | <tr> |
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354 | <td><label for="questionCategory">Category</label></td> |
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355 | <td id="categoryBox"><!-- Select should be filled with existing categories--> |
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356 | <?php $this->questionCategorySelect(); ?> |
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357 | </td> |
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358 | </tr> |
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359 | <tr> |
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360 | <td><label for="questionCode">Code</label></td> |
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361 | <td><input id="questionCode" name="questionCode" size="5" /></td> |
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362 | </tr> |
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363 | <tr> |
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364 | <td><label for="questionTitle">Title</label></td> |
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365 | <td><input id="questionTitle" name="questionTitle" size="60" /></td> |
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366 | </tr> |
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367 | <tr> |
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368 | <td><label for="questionDescription">Description</label></td> |
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369 | <td><input id="questionDescription" name="questionDescription" size="60" /></td> |
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370 | </tr> |
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371 | <tr> |
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372 | <td><label for="questionType">Type answer</label></td> |
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373 | <td id="questionType"> |
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374 | <select id="questionTypeSelect" name="questionType" onchange="handleType(this)"> |
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375 | <option value='text' selected='selected'>Text</option> |
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376 | <option value='int'>Integer</option> |
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377 | <option value='mc'>Multiple choice</option> |
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378 | <option value='checkboxes'>Checkboxes</option> |
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379 | <option value='scale'>Scale</option> |
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380 | </select> |
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381 | </td> |
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382 | </tr> |
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383 | </table> |
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384 | <div id="answerSpecifications"></div> |
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385 | <input id="clearQuestionFields" type="button" onclick="clearFields()" class="surveyButton" value="Clear" /> |
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386 | <input id="saveQuestion" type="submit" class="surveyButton" value="Save" /> |
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387 | </form> |
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388 | <?php |
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389 | } |
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390 | |
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391 | private function questionCategorySelect() { |
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392 | ?> |
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393 | <select id="questionCategorySelect" name="questionCategory"> |
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394 | <option value='Uncategorized' selected='selected'>Uncategorized</option> |
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395 | <?php $this->generateCategoryOptions(); ?> |
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396 | </select> |
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397 | <!-- New category button --> |
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398 | <input type="button" class="surveyButton" onclick="newCategory()" value="New Category" /> |
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399 | <?php |
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400 | } |
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401 | |
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402 | private function generateCategoryOptions() { |
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403 | $categories = array(); |
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404 | |
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405 | foreach ($this->questions as $question) { |
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406 | $category = $question->category; |
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407 | array_push($categories, $category); |
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408 | } |
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409 | $categories = array_unique($categories); |
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410 | |
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411 | // You might want to escape quotes and stuff here |
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412 | foreach ($categories as $category) { |
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413 | ?> |
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414 | <option value="<?php echo $category; ?>"><?php echo $category; ?></option> |
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415 | <?php |
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416 | } |
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417 | } |
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418 | |
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419 | /** |
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420 | * Populates the question list. Sorts the list first by question category. |
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421 | */ |
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422 | private function populateList() { |
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423 | |
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424 | $this->questions = $this->sortByCategory($this->questions); |
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425 | |
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426 | $currentCategory = null; |
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427 | |
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428 | foreach ($this->questions as $question) { |
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429 | if (is_null($currentCategory)) { |
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430 | ?> <optgroup label="<?php echo $question->category; ?>"><?php |
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431 | $currentCategory = $question->category; |
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432 | } else if ($currentCategory != $question->category) { |
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433 | /* Next category */ |
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434 | ?></optgroup><?php |
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435 | $currentCategory = $question->category; |
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436 | ?> <optgroup label="<?php echo $question->category; ?>"><?php |
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437 | } |
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438 | ?> |
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439 | /* function loadQuestionIn() should still be made */ |
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440 | <option value="<?php echo $question->code; ?>" onfocus="loadQuestionIn()"> |
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441 | <?php echo "[" . $question->code . "] " . $question->title; ?> |
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442 | </option> |
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443 | |
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444 | <?php |
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445 | } |
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446 | ?></optgroup><?php |
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447 | } |
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448 | |
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449 | /** |
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450 | * |
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451 | * @param type $questions |
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452 | */ |
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453 | private function sortByCategory($questions) { |
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454 | usort($questions, "cmp"); |
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455 | return $questions; |
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456 | } |
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457 | |
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458 | } |
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459 | |
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460 | /* This function is placed outside the class on purpose. |
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461 | * It's only used as callback function. |
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462 | */ |
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463 | |
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464 | function cmp($q1, $q2) { |
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465 | if ($q1->category == $q2->category) { |
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466 | if($q1->code < $q2->code) |
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467 | return -1; |
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468 | else |
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469 | return 1; |
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470 | } |
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471 | return ($q1->category < $q2->category) ? -1 : 1; |
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472 | } |
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473 | ?> |
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