Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like Give_Donate_Form often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Give_Donate_Form, and based on these observations, apply Extract Interface, too.
1 | <?php |
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33 | class Give_Donate_Form { |
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34 | |||
35 | /** |
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36 | * The donation ID. |
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37 | * |
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38 | * @since 1.0 |
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39 | * @access public |
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40 | * |
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41 | * @var int |
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42 | */ |
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43 | public $ID = 0; |
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44 | |||
45 | /** |
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46 | * The donation price. |
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47 | * |
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48 | * @since 1.0 |
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49 | * @access private |
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50 | * |
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51 | * @var float |
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52 | */ |
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53 | private $price; |
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54 | |||
55 | /** |
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56 | * The minimum donation price. |
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57 | * |
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58 | * @since 1.3.6 |
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59 | * @access private |
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60 | * |
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61 | * @var float |
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62 | */ |
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63 | private $minimum_price; |
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64 | |||
65 | /** |
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66 | * The maximum donation price. |
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67 | * |
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68 | * @since 2.0 |
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69 | * @access private |
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70 | * |
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71 | * @var float |
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72 | */ |
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73 | private $maximum_price; |
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74 | |||
75 | /** |
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76 | * The donation prices, if Price Levels are enabled. |
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77 | * |
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78 | * @since 1.0 |
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79 | * @access private |
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80 | * |
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81 | * @var array |
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82 | */ |
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83 | private $prices; |
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84 | |||
85 | /** |
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86 | * The donation goal. |
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87 | * |
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88 | * @since 1.0 |
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89 | * @access private |
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90 | * |
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91 | * @var float |
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92 | */ |
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93 | private $goal; |
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94 | |||
95 | /** |
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96 | * The form's sale count. |
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97 | * |
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98 | * @since 1.0 |
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99 | * @access private |
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100 | * |
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101 | * @var int |
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102 | */ |
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103 | private $sales; |
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104 | |||
105 | /** |
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106 | * The form's total earnings |
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107 | * |
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108 | * @since 1.0 |
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109 | * @access private |
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110 | * |
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111 | * @var float |
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112 | */ |
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113 | private $earnings; |
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114 | |||
115 | /** |
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116 | * Declare the default properties in WP_Post as we can't extend it |
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117 | * Anything we've declared above has been removed. |
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118 | */ |
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119 | |||
120 | /** |
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121 | * The post author |
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122 | * |
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123 | * @since 1.0 |
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124 | * @access public |
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125 | * |
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126 | * @var int |
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127 | */ |
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128 | public $post_author = 0; |
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129 | |||
130 | /** |
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131 | * The post date |
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132 | * |
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133 | * @since 1.0 |
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134 | * @access public |
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135 | * |
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136 | * @var string |
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137 | */ |
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138 | public $post_date = '0000-00-00 00:00:00'; |
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139 | |||
140 | /** |
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141 | * The post GTM date |
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142 | * |
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143 | * @since 1.0 |
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144 | * @access public |
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145 | * |
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146 | * @var string |
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147 | */ |
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148 | public $post_date_gmt = '0000-00-00 00:00:00'; |
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149 | |||
150 | /** |
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151 | * The post content |
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152 | * |
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153 | * @since 1.0 |
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154 | * @access public |
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155 | * |
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156 | * @var string |
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157 | */ |
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158 | public $post_content = ''; |
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159 | |||
160 | /** |
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161 | * The post title |
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162 | * |
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163 | * @since 1.0 |
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164 | * @access public |
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165 | * |
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166 | * @var string |
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167 | */ |
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168 | public $post_title = ''; |
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169 | |||
170 | /** |
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171 | * The post excerpt |
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172 | * |
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173 | * @since 1.0 |
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174 | * @access public |
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175 | * |
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176 | * @var string |
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177 | */ |
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178 | public $post_excerpt = ''; |
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179 | |||
180 | /** |
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181 | * The post status |
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182 | * |
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183 | * @since 1.0 |
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184 | * @access public |
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185 | * |
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186 | * @var string |
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187 | */ |
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188 | public $post_status = 'publish'; |
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189 | |||
190 | /** |
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191 | * The comment status |
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192 | * |
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193 | * @since 1.0 |
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194 | * @access public |
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195 | * |
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196 | * @var string |
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197 | */ |
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198 | public $comment_status = 'open'; |
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199 | |||
200 | /** |
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201 | * The ping status |
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202 | * |
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203 | * @since 1.0 |
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204 | * @access public |
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205 | * |
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206 | * @var string |
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207 | */ |
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208 | public $ping_status = 'open'; |
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209 | |||
210 | /** |
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211 | * The post password |
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212 | * |
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213 | * @since 1.0 |
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214 | * @access public |
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215 | * |
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216 | * @var string |
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217 | */ |
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218 | public $post_password = ''; |
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219 | |||
220 | /** |
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221 | * The post name |
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222 | * |
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223 | * @since 1.0 |
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224 | * @access public |
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225 | * |
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226 | * @var string |
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227 | */ |
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228 | public $post_name = ''; |
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229 | |||
230 | /** |
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231 | * Ping |
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232 | * |
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233 | * @since 1.0 |
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234 | * @access public |
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235 | * |
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236 | * @var string |
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237 | */ |
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238 | public $to_ping = ''; |
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239 | |||
240 | /** |
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241 | * Pinged |
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242 | * |
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243 | * @since 1.0 |
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244 | * @access public |
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245 | * |
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246 | * @var string |
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247 | */ |
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248 | public $pinged = ''; |
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249 | |||
250 | /** |
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251 | * The post modified date |
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252 | * |
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253 | * @since 1.0 |
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254 | * @access public |
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255 | * |
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256 | * @var string |
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257 | */ |
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258 | public $post_modified = '0000-00-00 00:00:00'; |
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259 | |||
260 | /** |
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261 | * The post modified GTM date |
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262 | * |
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263 | * @since 1.0 |
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264 | * @access public |
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265 | * |
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266 | * @var string |
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267 | */ |
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268 | public $post_modified_gmt = '0000-00-00 00:00:00'; |
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269 | |||
270 | /** |
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271 | * The post filtered content |
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272 | * |
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273 | * @since 1.0 |
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274 | * @access public |
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275 | * |
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276 | * @var string |
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277 | */ |
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278 | public $post_content_filtered = ''; |
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279 | |||
280 | /** |
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281 | * The post parent |
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282 | * |
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283 | * @since 1.0 |
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284 | * @access public |
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285 | * |
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286 | * @var int |
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287 | */ |
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288 | public $post_parent = 0; |
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289 | |||
290 | /** |
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291 | * The post GUID |
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292 | * |
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293 | * @since 1.0 |
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294 | * @access public |
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295 | * |
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296 | * @var string |
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297 | */ |
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298 | public $guid = ''; |
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299 | |||
300 | /** |
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301 | * The menu order |
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302 | * |
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303 | * @since 1.0 |
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304 | * @access public |
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305 | * |
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306 | * @var int |
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307 | */ |
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308 | public $menu_order = 0; |
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309 | |||
310 | /** |
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311 | * The mime type0 |
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312 | * |
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313 | * @since 1.0 |
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314 | * @access public |
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315 | * |
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316 | * @var string |
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317 | */ |
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318 | public $post_mime_type = ''; |
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319 | |||
320 | /** |
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321 | * The comment count |
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322 | * |
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323 | * @since 1.0 |
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324 | * @access public |
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325 | * |
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326 | * @var int |
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327 | */ |
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328 | public $comment_count = 0; |
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329 | |||
330 | /** |
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331 | * Filtered |
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332 | * |
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333 | * @since 1.0 |
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334 | * @access public |
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335 | * |
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336 | * @var string |
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337 | */ |
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338 | public $filter; |
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339 | |||
340 | /** |
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341 | * Class Constructor |
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342 | * |
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343 | * Set up the Give Donate Form Class. |
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344 | * |
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345 | * @since 1.0 |
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346 | * @access public |
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347 | * |
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348 | * @param int|bool $_id Post id. Default is false. |
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349 | * @param array $_args Arguments passed. |
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350 | */ |
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351 | public function __construct( $_id = false, $_args = array() ) { |
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357 | |||
358 | /** |
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359 | * Given the donation form data, let's set the variables |
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360 | * |
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361 | * @since 1.5 |
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362 | * @access private |
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363 | * |
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364 | * @param WP_Post $donation_form WP_Post Object for the donation form. |
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365 | * |
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366 | * @return bool If the setup was successful or not. |
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367 | */ |
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368 | private function setup_donation_form( $donation_form ) { |
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397 | |||
398 | /** |
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399 | * Magic __get function to dispatch a call to retrieve a private property |
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400 | * |
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401 | * @since 1.0 |
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402 | * @access public |
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403 | * |
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404 | * @param string $key |
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405 | * |
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406 | * @return mixed |
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407 | */ |
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408 | View Code Duplication | public function __get( $key ) { |
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422 | |||
423 | /** |
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424 | * Creates a donation form |
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425 | * |
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426 | * @since 1.5 |
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427 | * @access public |
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428 | * |
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429 | * @param array $data Array of attributes for a donation form. |
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430 | * |
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431 | * @return bool|int False if data isn't passed and class not instantiated for creation, or New Form ID. |
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432 | */ |
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433 | public function create( $data = array() ) { |
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469 | |||
470 | /** |
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471 | * Retrieve the ID |
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472 | * |
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473 | * @since 1.0 |
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474 | * @access public |
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475 | * |
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476 | * @return int Donation form ID. |
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477 | */ |
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478 | public function get_ID() { |
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481 | |||
482 | /** |
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483 | * Retrieve the donation form name |
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484 | * |
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485 | * @since 1.5 |
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486 | * @access public |
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487 | * |
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488 | * @return string Donation form name. |
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489 | */ |
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490 | public function get_name() { |
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493 | |||
494 | /** |
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495 | * Retrieve the price |
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496 | * |
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497 | * @since 1.0 |
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498 | * @access public |
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499 | * |
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500 | * @return float Price. |
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501 | */ |
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502 | View Code Duplication | public function get_price() { |
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530 | |||
531 | /** |
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532 | * Retrieve the minimum price. |
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533 | * |
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534 | * @since 1.3.6 |
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535 | * @access public |
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536 | * |
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537 | * @return float Minimum price. |
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538 | */ |
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539 | public function get_minimum_price() { |
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558 | |||
559 | /** |
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560 | * Retrieve the maximum price. |
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561 | * |
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562 | * @since 2.1 |
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563 | * @access public |
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564 | * |
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565 | * @return float Maximum price. |
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566 | */ |
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567 | View Code Duplication | public function get_maximum_price() { |
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579 | |||
580 | /** |
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581 | * Retrieve the variable prices |
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582 | * |
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583 | * @since 1.0 |
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584 | * @access public |
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585 | * |
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586 | * @return array Variable prices. |
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587 | */ |
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588 | public function get_prices() { |
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607 | |||
608 | /** |
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609 | * Get donation form level info |
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610 | * |
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611 | * @since 2.0.6 |
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612 | * @access public |
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613 | * |
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614 | * @param $price_id |
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615 | * |
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616 | * @return array|null |
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617 | */ |
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618 | public function get_level_info( $price_id ) { |
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637 | |||
638 | |||
639 | /** |
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640 | * Retrieve the goal |
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641 | * |
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642 | * @since 1.0 |
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643 | * @access public |
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644 | * |
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645 | * @return float Goal. |
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646 | */ |
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647 | public function get_goal() { |
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670 | |||
671 | /** |
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672 | * Determine if single price mode is enabled or disabled |
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673 | * |
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674 | * @since 1.0 |
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675 | * @access public |
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676 | * |
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677 | * @return bool |
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678 | */ |
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679 | View Code Duplication | public function is_single_price_mode() { |
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699 | |||
700 | /** |
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701 | * Determine if custom price mode is enabled or disabled |
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702 | * |
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703 | * @since 1.6 |
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704 | * @access public |
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705 | * |
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706 | * @return bool |
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707 | */ |
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708 | public function is_custom_price_mode() { |
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728 | |||
729 | /** |
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730 | * Determine if custom price mode is enabled or disabled |
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731 | * |
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732 | * @since 1.8.18 |
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733 | * @access public |
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734 | * |
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735 | * @param string|float $amount Donation Amount. |
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736 | * |
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737 | * @return bool |
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738 | */ |
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739 | public function is_custom_price( $amount ) { |
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767 | |||
768 | /** |
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769 | * Has Variable Prices |
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770 | * |
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771 | * Determine if the donation form has variable prices enabled |
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772 | * |
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773 | * @since 1.0 |
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774 | * @access public |
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775 | * |
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776 | * @return bool |
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777 | */ |
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778 | View Code Duplication | public function has_variable_prices() { |
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796 | |||
797 | /** |
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798 | * Retrieve the donation form type, set or multi-level |
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799 | * |
||
800 | * @since 1.5 |
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801 | * @access public |
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802 | * |
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803 | * @return string Type of donation form, either 'set' or 'multi'. |
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804 | */ |
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805 | View Code Duplication | public function get_type() { |
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820 | |||
821 | /** |
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822 | * Get form tag classes. |
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823 | * |
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824 | * Provides the classes for the donation <form> html tag and filters for customization. |
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825 | * |
||
826 | * @since 1.6 |
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827 | * @access public |
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828 | * |
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829 | * @param $args |
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830 | * |
||
831 | * @return string |
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832 | */ |
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833 | public function get_form_classes( $args ) { |
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852 | |||
853 | /** |
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854 | * Get form wrap Classes. |
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855 | * |
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856 | * Provides the classes for the donation form div wrapper and filters for customization. |
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857 | * |
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858 | * @access public |
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859 | * |
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860 | * @param $args |
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861 | * |
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862 | * @return string |
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863 | */ |
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864 | public function get_form_wrap_classes( $args ) { |
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896 | |||
897 | /** |
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898 | * Get if form type set or not. |
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899 | * |
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900 | * @since 1.6 |
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901 | * @access public |
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902 | * |
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903 | * @return bool |
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904 | */ |
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905 | public function is_set_type_donation_form() { |
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910 | |||
911 | /** |
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912 | * Get if form type multi or not. |
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913 | * |
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914 | * @since 1.6 |
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915 | * @access public |
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916 | * |
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917 | * @return bool True if form type is 'multi' and false otherwise. |
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918 | */ |
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919 | public function is_multi_type_donation_form() { |
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925 | |||
926 | /** |
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927 | * Retrieve the sale count for the donation form |
||
928 | * |
||
929 | * @since 1.0 |
||
930 | * @access public |
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931 | * |
||
932 | * @return int Donation form sale count. |
||
933 | */ |
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934 | View Code Duplication | public function get_sales() { |
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954 | |||
955 | /** |
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956 | * Increment the sale count by one |
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957 | * |
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958 | * @since 1.0 |
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959 | * @access public |
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960 | * |
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961 | * @param int $quantity The quantity to increase the donations by. Default is 1. |
||
962 | * |
||
963 | * @return int|false New number of total sales. |
||
964 | */ |
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965 | public function increase_sales( $quantity = 1 ) { |
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981 | |||
982 | /** |
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983 | * Decrement the sale count by one |
||
984 | * |
||
985 | * @since 1.0 |
||
986 | * @access public |
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987 | * |
||
988 | * @param int $quantity The quantity to decrease by. Default is 1. |
||
989 | * |
||
990 | * @return int|false New number of total sales. |
||
991 | */ |
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992 | public function decrease_sales( $quantity = 1 ) { |
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1015 | |||
1016 | /** |
||
1017 | * Retrieve the total earnings for the form |
||
1018 | * |
||
1019 | * @since 1.0 |
||
1020 | * @access public |
||
1021 | * |
||
1022 | * @return float Donation form total earnings. |
||
1023 | */ |
||
1024 | View Code Duplication | public function get_earnings() { |
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1044 | |||
1045 | /** |
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1046 | * Increase the earnings by the given amount |
||
1047 | * |
||
1048 | * @since 1.0 |
||
1049 | * @since 2.1 Pass the donation ID. |
||
1050 | * |
||
1051 | * @access public |
||
1052 | * |
||
1053 | * @param int $amount Amount of donation. Default is 0. |
||
1054 | * @param int $payment_id Donation ID. |
||
1055 | * |
||
1056 | * @return float|false |
||
1057 | */ |
||
1058 | View Code Duplication | public function increase_earnings( $amount = 0, $payment_id = 0 ) { |
|
1086 | |||
1087 | /** |
||
1088 | * Decrease the earnings by the given amount |
||
1089 | * |
||
1090 | * @since 1.0 |
||
1091 | * @access public |
||
1092 | * |
||
1093 | * @param int $amount Amount of donation. |
||
1094 | * @param int $payment_id Donation ID. |
||
1095 | * |
||
1096 | * @return float|false |
||
1097 | */ |
||
1098 | View Code Duplication | public function decrease_earnings( $amount, $payment_id = 0 ) { |
|
1129 | |||
1130 | /** |
||
1131 | * Determine if donation form closed or not |
||
1132 | * |
||
1133 | * Form will be close if: |
||
1134 | * a. form has fixed goal |
||
1135 | * b. close form when goal achieved cmb2 setting is set to 'Yes' |
||
1136 | * c. goal has been achieved |
||
1137 | * |
||
1138 | * @since 1.4.5 |
||
1139 | * @access public |
||
1140 | * |
||
1141 | * @return bool |
||
1142 | */ |
||
1143 | public function is_close_donation_form() { |
||
1165 | |||
1166 | /** |
||
1167 | * Updates a single meta entry for the donation form |
||
1168 | * |
||
1169 | * @since 1.5 |
||
1170 | * @access private |
||
1171 | * |
||
1172 | * @param string $meta_key The meta_key to update. |
||
1173 | * @param string|array|object $meta_value The value to put into the meta. |
||
1174 | * |
||
1175 | * @return bool The result of the update query. |
||
1176 | */ |
||
1177 | private function update_meta( $meta_key = '', $meta_value = '' ) { |
||
1193 | |||
1194 | /** |
||
1195 | * Backward Compatible function for is_close_donation_form() |
||
1196 | * |
||
1197 | * @since 2.1.0 |
||
1198 | * |
||
1199 | * @return bool |
||
1200 | */ |
||
1201 | private function bc_210_is_close_donation_form() { |
||
1239 | |||
1240 | } |
||
1241 |
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.