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<?php /** * @link https://www.yiiframework.com/ * @copyright Copyright (c) 2008 Yii Software LLC * @license https://www.yiiframework.com/license/ */ namespace yii\grid; use Closure; use yii\base\BaseObject; use yii\helpers\Html; /** * Column is the base class of all [[GridView]] column classes. * * For more details and usage information on Column, see the [guide article on data widgets](guide:output-data-widgets). * * @author Qiang Xue <qiang.xue@gmail.com> * @since 2.0 */ class Column extends BaseObject { /** * @var GridView the grid view object that owns this column. */ public $grid; /** * @var string|null the header cell content. Note that it will not be HTML-encoded. */ public $header; /** * @var string the footer cell content. Note that it will not be HTML-encoded. */ public $footer; /** * @var callable This is a callable that will be used to generate the content of each cell. * The signature of the function should be the following: `function ($model, $key, $index, $column)`. * Where `$model`, `$key`, and `$index` refer to the model, key and index of the row currently being rendered * and `$column` is a reference to the [[Column]] object. */ public $content; /** * @var bool whether this column is visible. Defaults to true. */ public $visible = true; /** * @var array the HTML attributes for the column group tag. * @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered. */ public $options = []; /** * @var array the HTML attributes for the header cell tag. * @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered. */ public $headerOptions = []; /** * @var array|\Closure the HTML attributes for the data cell tag. This can either be an array of * attributes or an anonymous function ([[Closure]]) that returns such an array. * The signature of the function should be the following: `function ($model, $key, $index, $column)`. * Where `$model`, `$key`, and `$index` refer to the model, key and index of the row currently being rendered * and `$column` is a reference to the [[Column]] object. * A function may be used to assign different attributes to different rows based on the data in that row. * * @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered. */ public $contentOptions = []; /** * @var array the HTML attributes for the footer cell tag. * @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered. */ public $footerOptions = []; /** * @var array the HTML attributes for the filter cell tag. * @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered. */ public $filterOptions = []; /** * Renders the header cell. */ public function renderHeaderCell() { return Html::tag('th', $this->renderHeaderCellContent(), $this->headerOptions); } /** * Renders the footer cell. */ public function renderFooterCell() { return Html::tag('td', $this->renderFooterCellContent(), $this->footerOptions); } /** * Renders a data cell. * @param mixed $model the data model being rendered * @param mixed $key the key associated with the data model * @param int $index the zero-based index of the data item among the item array returned by [[GridView::dataProvider]]. * @return string the rendering result */ public function renderDataCell($model, $key, $index) { if ($this->contentOptions instanceof Closure) { $options = call_user_func($this->contentOptions, $model, $key, $index, $this); } else { $options = $this->contentOptions; } return Html::tag('td', $this->renderDataCellContent($model, $key, $index), $options); } /** * Renders the filter cell. */ public function renderFilterCell() { return Html::tag('td', $this->renderFilterCellContent(), $this->filterOptions); } /** * Renders the header cell content. * The default implementation simply renders [[header]]. * This method may be overridden to customize the rendering of the header cell. * @return string the rendering result */ protected function renderHeaderCellContent() { return $this->header !== null && trim($this->header) !== '' ? $this->header : $this->getHeaderCellLabel(); } /** * Returns header cell label. * This method may be overridden to customize the label of the header cell. * @return string label * @since 2.0.8 */ protected function getHeaderCellLabel() { return $this->grid->emptyCell; } /** * Renders the footer cell content. * The default implementation simply renders [[footer]]. * This method may be overridden to customize the rendering of the footer cell. * @return string the rendering result */ protected function renderFooterCellContent() { return $this->footer !== null && trim($this->footer) !== '' ? $this->footer : $this->grid->emptyCell; } /** * Renders the data cell content. * @param mixed $model the data model * @param mixed $key the key associated with the data model * @param int $index the zero-based index of the data model among the models array returned by [[GridView::dataProvider]]. * @return string the rendering result */ protected function renderDataCellContent($model, $key, $index) { if ($this->content !== null) { return call_user_func($this->content, $model, $key, $index, $this); } return $this->grid->emptyCell; } /** * Renders the filter cell content. * The default implementation simply renders a space. * This method may be overridden to customize the rendering of the filter cell (if any). * @return string the rendering result */ protected function renderFilterCellContent() { return $this->grid->emptyCell; } }