Complex classes like DataTable 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 DataTable, and based on these observations, apply Extract Interface, too.
1 | <?php |
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25 | class DataTable extends Widget { |
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26 | use FieldAsTrait; |
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27 | |||
28 | protected $_searchField; |
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29 | protected $_urls; |
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30 | protected $_pagination; |
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31 | protected $_hasCheckboxes; |
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32 | protected $_compileParts; |
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33 | |||
34 | public function run(JsUtils $js){ |
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35 | if($this->_hasCheckboxes && isset($js)){ |
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36 | $js->execOn("change", "#".$this->identifier." [name='selection[]']", " |
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37 | var \$parentCheckbox=\$('#ck-main-ck-{$this->identifier}'),\$checkbox=\$('#{$this->identifier} [name=\"selection[]\"]'),allChecked=true,allUnchecked=true; |
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38 | \$checkbox.each(function() {if($(this).prop('checked')){allUnchecked = false;}else{allChecked = false;}}); |
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39 | if(allChecked) {\$parentCheckbox.checkbox('set checked');}else if(allUnchecked){\$parentCheckbox.checkbox('set unchecked');}else{\$parentCheckbox.checkbox('set indeterminate');}"); |
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40 | } |
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41 | parent::run($js); |
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42 | } |
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43 | |||
44 | public function __construct($identifier,$model,$modelInstance=NULL) { |
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45 | parent::__construct($identifier, $model,$modelInstance); |
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46 | $this->_instanceViewer=new InstanceViewerCaption(); |
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47 | $this->content=["table"=>new HtmlTable($identifier, 0,0)]; |
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48 | $this->_toolbarPosition=PositionInTable::BEFORETABLE; |
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49 | } |
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50 | |||
51 | public function compile(JsUtils $js=NULL,&$view=NULL){ |
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52 | $this->_instanceViewer->setInstance($this->_model); |
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53 | $captions=$this->_instanceViewer->getCaptions(); |
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54 | |||
55 | $table=$this->content["table"]; |
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56 | |||
57 | if($this->_hasCheckboxes){ |
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58 | $ck=new HtmlCheckbox("main-ck-".$this->identifier,""); |
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59 | $ck->setOnChecked("$('#".$this->identifier." [name=%quote%selection[]%quote%]').prop('checked',true);"); |
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60 | $ck->setOnUnchecked("$('#".$this->identifier." [name=%quote%selection[]%quote%]').prop('checked',false);"); |
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61 | \array_unshift($captions, $ck); |
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62 | } |
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63 | |||
64 | $table->setRowCount(0, \sizeof($captions)); |
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65 | $table->setHeaderValues($captions); |
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66 | if(isset($this->_compileParts)) |
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67 | $table->setCompileParts($this->_compileParts); |
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68 | if(isset($this->_searchField)){ |
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69 | if(isset($js)) |
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70 | $this->_searchField->postOn("change", $this->_urls,"{'s':$(this).val()}","-#".$this->identifier." tbody",["preventDefault"=>false]); |
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71 | } |
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72 | |||
73 | $this->_generateContent($table); |
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74 | |||
75 | if($this->_hasCheckboxes){ |
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76 | if($table->hasPart("thead")) |
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77 | $table->getHeader()->getCell(0, 0)->addToProperty("class","no-sort"); |
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78 | } |
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79 | |||
80 | if(isset($this->_pagination) && $this->_pagination->getVisible()){ |
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81 | $this->_generatePagination($table); |
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82 | } |
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83 | if(isset($this->_toolbar)){ |
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84 | $this->_setToolbarPosition($table, $captions); |
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85 | } |
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86 | $this->content=JArray::sortAssociative($this->content, [PositionInTable::BEFORETABLE,"table",PositionInTable::AFTERTABLE]); |
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87 | return parent::compile($js,$view); |
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88 | } |
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89 | |||
90 | private function _generateContent($table){ |
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91 | $objects=$this->_modelInstance; |
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92 | if(isset($this->_pagination)){ |
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93 | $objects=$this->_pagination->getObjects($this->_modelInstance); |
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94 | } |
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95 | InstanceViewerCaption::setIndex(0); |
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96 | $table->fromDatabaseObjects($objects, function($instance){ |
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97 | $this->_instanceViewer->setInstance($instance); |
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98 | InstanceViewerCaption::$index++; |
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99 | $result= $this->_instanceViewer->getValues(); |
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100 | if($this->_hasCheckboxes){ |
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101 | $ck=new HtmlCheckbox("ck-".$this->identifier,""); |
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102 | $field=$ck->getField(); |
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103 | $field->setProperty("value",$this->_instanceViewer->getIdentifier()); |
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104 | $field->setProperty("name", "selection[]"); |
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105 | \array_unshift($result, $ck); |
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106 | } |
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107 | return $result; |
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108 | }); |
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109 | } |
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110 | |||
111 | private function _generatePagination($table){ |
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112 | $footer=$table->getFooter(); |
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113 | $footer->mergeCol(); |
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114 | $menu=new HtmlPaginationMenu("pagination-".$this->identifier,$this->_pagination->getPagesNumbers()); |
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115 | $menu->floatRight(); |
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116 | $menu->setActiveItem($this->_pagination->getPage()-1); |
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117 | $footer->setValues($menu); |
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118 | $menu->postOnClick($this->_urls,"{'p':$(this).attr('data-page')}","-#".$this->identifier." tbody",["preventDefault"=>false]); |
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119 | } |
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120 | |||
121 | private function _setToolbarPosition($table,$captions){ |
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122 | switch ($this->_toolbarPosition){ |
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123 | case PositionInTable::BEFORETABLE:case PositionInTable::AFTERTABLE: |
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124 | if(isset($this->_compileParts)===false){ |
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125 | $this->content[$this->_toolbarPosition]=$this->_toolbar; |
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126 | } |
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127 | break; |
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128 | case PositionInTable::HEADER:case PositionInTable::FOOTER: case PositionInTable::BODY: |
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129 | $this->addToolbarRow($this->_toolbarPosition,$table, $captions); |
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130 | break; |
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131 | } |
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132 | } |
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133 | |||
134 | /** |
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135 | * Associates a $callback function after the compilation of the field at $index position |
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136 | * The $callback function can take the following arguments : $field=>the compiled field, $instance : the active instance of the object, $index: the field position |
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137 | * @param int $index postion of the compiled field |
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138 | * @param callable $callback function called after the field compilation |
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139 | * @return \Ajax\semantic\widgets\datatable\DataTable |
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140 | */ |
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141 | public function afterCompile($index,$callback){ |
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142 | $this->_instanceViewer->afterCompile($index,$callback); |
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143 | return $this; |
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144 | } |
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145 | |||
146 | private function addToolbarRow($part,$table,$captions){ |
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147 | $row=$table->getPart($part)->addRow(\sizeof($captions)); |
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148 | $row->mergeCol(); |
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149 | $row->setValues([$this->_toolbar]); |
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150 | } |
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151 | |||
152 | public function getInstanceViewer() { |
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153 | return $this->_instanceViewer; |
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154 | } |
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155 | |||
156 | public function setInstanceViewer($_instanceViewer) { |
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157 | $this->_instanceViewer=$_instanceViewer; |
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158 | return $this; |
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159 | } |
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160 | |||
161 | public function setCaptions($captions){ |
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162 | $this->_instanceViewer->setCaptions($captions); |
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163 | return $this; |
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164 | } |
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165 | |||
166 | public function setFields($fields){ |
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167 | $this->_instanceViewer->setVisibleProperties($fields); |
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168 | return $this; |
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169 | } |
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170 | |||
171 | public function addField($field){ |
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172 | $this->_instanceViewer->addField($field); |
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173 | return $this; |
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174 | } |
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175 | |||
176 | public function insertField($index,$field){ |
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177 | $this->_instanceViewer->insertField($index, $field); |
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178 | return $this; |
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179 | } |
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180 | |||
181 | public function insertInField($index,$field){ |
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182 | $this->_instanceViewer->insertInField($index, $field); |
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183 | return $this; |
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184 | } |
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185 | |||
186 | public function setValueFunction($index,$callback){ |
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187 | $this->_instanceViewer->setValueFunction($index, $callback); |
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188 | return $this; |
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189 | } |
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190 | |||
191 | public function setIdentifierFunction($callback){ |
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192 | $this->_instanceViewer->setIdentifierFunction($callback); |
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193 | return $this; |
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194 | } |
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195 | |||
196 | public function getHtmlComponent(){ |
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197 | return $this->content["table"]; |
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198 | } |
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199 | |||
200 | public function getUrls() { |
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201 | return $this->_urls; |
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202 | } |
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203 | |||
204 | public function setUrls($urls) { |
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205 | $this->_urls=$urls; |
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206 | return $this; |
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207 | } |
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208 | |||
209 | public function paginate($items_per_page=10,$page=1){ |
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210 | $this->_pagination=new Pagination($items_per_page,4,$page); |
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211 | } |
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212 | |||
213 | public function getHasCheckboxes() { |
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214 | return $this->_hasCheckboxes; |
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215 | } |
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216 | |||
217 | public function setHasCheckboxes($_hasCheckboxes) { |
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218 | $this->_hasCheckboxes=$_hasCheckboxes; |
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219 | return $this; |
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220 | } |
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221 | |||
222 | public function refresh($compileParts=["tbody"]){ |
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223 | $this->_compileParts=$compileParts; |
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224 | return $this; |
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225 | } |
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226 | /** |
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227 | * @param string $caption |
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228 | * @param callable $callback |
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229 | * @return callable |
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230 | */ |
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231 | private function getFieldButtonCallable($caption,$callback=null){ |
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232 | return $this->getCallable("getFieldButton",[$caption],$callback); |
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233 | } |
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234 | |||
235 | /** |
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236 | * @param mixed $object |
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237 | * @param callable $callback |
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238 | * @return callable |
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239 | */ |
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240 | private function getCallable($thisCallback,$parameters,$callback=null){ |
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241 | $result=function($instance) use($thisCallback,$parameters,$callback){ |
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242 | $object=call_user_func_array(array($this,$thisCallback), $parameters); |
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243 | if(isset($callback)){ |
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244 | if(\is_callable($callback)){ |
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245 | $callback($object,$instance); |
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246 | } |
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247 | } |
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248 | if($object instanceof HtmlSemDoubleElement){ |
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249 | $object->setProperty("data-ajax",$this->_instanceViewer->getIdentifier()); |
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250 | } |
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251 | return $object; |
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252 | }; |
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253 | return $result; |
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254 | } |
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255 | |||
256 | /** |
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257 | * @param string $caption |
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258 | * @return HtmlButton |
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259 | */ |
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260 | private function getFieldButton($caption){ |
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261 | return new HtmlButton("",$caption); |
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262 | } |
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263 | |||
264 | /** |
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265 | * Inserts a new Button for each row |
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266 | * @param string $caption |
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267 | * @param callable $callback |
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268 | * @return \Ajax\semantic\widgets\datatable\DataTable |
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269 | */ |
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270 | public function addFieldButton($caption,$callback=null){ |
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271 | $this->addField($this->getCallable("getFieldButton",[$caption],$callback)); |
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272 | return $this; |
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273 | } |
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274 | |||
275 | /** |
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276 | * Inserts a new Button for each row at col $index |
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277 | * @param int $index |
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278 | * @param string $caption |
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279 | * @param callable $callback |
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280 | * @return \Ajax\semantic\widgets\datatable\DataTable |
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281 | */ |
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282 | public function insertFieldButton($index,$caption,$callback=null){ |
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283 | $this->insertField($index, $this->getFieldButtonCallable($caption,$callback)); |
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284 | return $this; |
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285 | } |
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286 | |||
287 | /** |
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288 | * Inserts a new Button for each row in col at $index |
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289 | * @param int $index |
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290 | * @param string $caption |
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291 | * @param callable $callback |
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292 | * @return \Ajax\semantic\widgets\datatable\DataTable |
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293 | */ |
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294 | public function insertInFieldButton($index,$caption,$callback=null){ |
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295 | $this->insertInField($index, $this->getFieldButtonCallable($caption,$callback)); |
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296 | return $this; |
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297 | } |
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298 | |||
299 | private function addDefaultButton($icon,$class=null,$callback=null){ |
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300 | $this->addField($this->getCallable("getDefaultButton",[$icon,$class],$callback)); |
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301 | return $this; |
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302 | } |
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303 | |||
304 | private function insertDefaultButtonIn($index,$icon,$class=null,$callback=null){ |
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305 | $this->insertInField($index,$this->getCallable("getDefaultButton",[$icon,$class],$callback)); |
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306 | return $this; |
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307 | } |
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308 | |||
309 | private function getDefaultButton($icon,$class=null){ |
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310 | $bt=$this->getFieldButton(""); |
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311 | $bt->asIcon($icon); |
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312 | if(isset($class)) |
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313 | $bt->addToProperty("class", $class); |
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314 | return $bt; |
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315 | } |
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316 | |||
317 | public function addDeleteButton($callback=null){ |
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318 | return $this->addDefaultButton("remove","delete red basic",$callback); |
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319 | } |
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320 | |||
321 | public function addEditButton($callback=null){ |
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322 | return $this->addDefaultButton("edit","edit basic",$callback); |
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323 | } |
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324 | |||
325 | public function addEditDeleteButtons($callbackEdit=null,$callbackDelete=null){ |
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326 | $this->addEditButton($callbackEdit); |
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327 | $index=$this->_instanceViewer->visiblePropertiesCount()-1; |
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328 | $this->insertDeleteButtonIn($index,$callbackDelete); |
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329 | return $this; |
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330 | } |
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331 | |||
332 | public function insertDeleteButtonIn($index,$callback=null){ |
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333 | return $this->insertDefaultButtonIn($index,"remove","delete red basic",$callback); |
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334 | } |
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335 | |||
336 | public function insertEditButtonIn($index,$callback=null){ |
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337 | return $this->insertDefaultButtonIn($index,"edit","edit basic",$callback); |
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338 | } |
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339 | |||
340 | public function setSelectable(){ |
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341 | $this->content["table"]->setSelectable(); |
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342 | return $this; |
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343 | } |
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344 | |||
345 | public function addSearchInToolbar(){ |
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348 | |||
349 | public function getSearchField(){ |
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356 | |||
357 | public function setSortable($colIndex=NULL) { |
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361 | |||
362 | protected function _getFieldIdentifier($prefix){ |
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363 | return $this->identifier."-{$prefix}-".$this->_instanceViewer->getIdentifier(); |
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364 | } |
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365 | |||
366 | /** |
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367 | * The callback function called after the insertion of each row when fromDatabaseObjects is called |
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368 | * callback function takes the parameters $row : the row inserted and $object: the instance of model used |
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369 | * @param callable $callback |
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370 | * @return DataTable |
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371 | */ |
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372 | public function onNewRow($callback) { |
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373 | $this->content["table"]->onNewRow($callback); |
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374 | return $this; |
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375 | } |
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376 | } |
Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property.
Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property..