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<?php
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/**
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* @link http://www.yiiframework.com/
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* @copyright Copyright (c) 2008 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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namespace yii\widgets;
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use Yii;
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use yii\base\InvalidConfigException;
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use yii\base\Widget;
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use yii\helpers\ArrayHelper;
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use yii\helpers\Html;
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/**
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @since 2.0
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*/
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abstract class ListViewBase extends Widget
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{
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/**
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* @var array the HTML attributes for the container tag of the list view.
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* The "tag" element specifies the tag name of the container element and defaults to "div".
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*/
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public $options = array();
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/**
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* @var \yii\data\IDataProvider the data provider for the view. This property is required.
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*/
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public $dataProvider;
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/**
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* @var array the configuration for the pager widget. By default, [[LinkPager]] will be
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* used to render the pager. You can use a different widget class by configuring the "class" element.
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*/
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public $pager = array();
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/**
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* @var array the configuration for the sorter widget. By default, [[LinkSorter]] will be
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* used to render the sorter. You can use a different widget class by configuring the "class" element.
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*/
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public $sorter = array();
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/**
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* @var string the HTML content to be displayed as the summary of the list view.
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* If you do not want to show the summary, you may set it with an empty string.
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*
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* The following tokens will be replaced with the corresponding values:
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*
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* - `{begin}`: the starting row number (1-based) currently being displayed
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* - `{end}`: the ending row number (1-based) currently being displayed
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* - `{count}`: the number of rows currently being displayed
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* - `{totalCount}`: the total number of rows available
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* - `{page}`: the page number (1-based) current being displayed
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* - `{pageCount}`: the number of pages available
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*/
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public $summary;
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/**
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* @var string|boolean the HTML content to be displayed when [[dataProvider]] does not have any data.
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* If false, the list view will still be displayed (without body content though).
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*/
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public $empty;
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/**
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* @var string the layout that determines how different sections of the list view should be organized.
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* The following tokens will be replaced with the corresponding section contents:
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*
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* - `{summary}`: the summary section. See [[renderSummary()]].
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* - `{items}`: the list items. See [[renderItems()]].
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* - `{sorter}`: the sorter. See [[renderSorter()]].
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* - `{pager}`: the pager. See [[renderPager()]].
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*/
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public $layout = "{summary}\n{sorter}\n{items}\n{pager}";
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/**
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* Renders the data models.
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* @return string the rendering result.
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*/
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abstract public function renderItems();
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/**
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* Initializes the view.
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*/
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public function init()
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{
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if ($this->dataProvider === null) {
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throw new InvalidConfigException('The "dataProvider" property must be set.');
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}
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}
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/**
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* Runs the widget.
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*/
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public function run()
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{
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if ($this->dataProvider->getCount() > 0 || $this->empty === false) {
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$widget = $this;
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$content = preg_replace_callback("/{\\w+}/", function ($matches) use ($widget) {
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$content = $widget->renderSection($matches[0]);
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return $content === false ? $matches[0] : $content;
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}, $this->layout);
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} else {
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$content = '<div class="empty">' . ($this->empty === null ? Yii::t('yii', 'No results found.') : $this->empty) . '</div>';
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}
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$tag = ArrayHelper::remove($this->options, 'tag', 'div');
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echo Html::tag($tag, $content, $this->options);
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}
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/**
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* Renders a section of the specified name.
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* If the named section is not supported, false will be returned.
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* @param string $name the section name, e.g., `{summary}`, `{items}`.
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* @return string|boolean the rendering result of the section, or false if the named section is not supported.
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*/
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public function renderSection($name)
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{
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switch ($name) {
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case '{summary}':
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return $this->renderSummary();
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case '{items}':
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return $this->renderItems();
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case '{pager}':
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return $this->renderPager();
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case '{sorter}':
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return $this->renderSorter();
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default:
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return false;
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}
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}
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/**
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* Renders the summary text.
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*/
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public function renderSummary()
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{
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$count = $this->dataProvider->getCount();
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if (($pagination = $this->dataProvider->getPagination()) !== false) {
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$totalCount = $this->dataProvider->getTotalCount();
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$begin = $pagination->getPage() * $pagination->pageSize + 1;
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$end = $begin + $count - 1;
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$page = $pagination->getPage() + 1;
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$pageCount = $pagination->pageCount;
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if (($summaryContent = $this->summary) === null) {
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$summaryContent = '<div class="summary">' . Yii::t('yii', 'Total <b>1</b> item.|Showing <b>{begin}-{end}</b> of <b>{totalCount}</b> items.', $totalCount) . '</div>';
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}
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} else {
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$begin = $page = $pageCount = 1;
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$end = $totalCount = $count;
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if (($summaryContent = $this->summary) === null) {
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$summaryContent = '<div class="summary">' . Yii::t('yii', 'Total <b>1</b> item.|Total <b>{count}</b> items.', $count) . '</div>';
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}
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}
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return strtr($summaryContent, array(
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'{begin}' => $begin,
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'{end}' => $end,
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'{count}' => $count,
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'{totalCount}' => $totalCount,
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'{page}' => $page,
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'{pageCount}' => $pageCount,
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));
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}
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/**
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* Renders the pager.
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* @return string the rendering result
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*/
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public function renderPager()
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{
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$pagination = $this->dataProvider->getPagination();
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if ($pagination === false || $this->dataProvider->getCount() <= 0) {
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return '';
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}
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/** @var LinkPager $class */
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$class = ArrayHelper::remove($this->pager, 'class', LinkPager::className());
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$this->pager['pagination'] = $pagination;
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return $class::widget($this->pager);
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}
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/**
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* Renders the sorter.
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* @return string the rendering result
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*/
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public function renderSorter()
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{
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$sort = $this->dataProvider->getSort();
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if ($sort === false || empty($sort->attributes) || $this->dataProvider->getCount() <= 0) {
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return '';
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}
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/** @var LinkSorter $class */
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$class = ArrayHelper::remove($this->sorter, 'class', LinkSorter::className());
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$this->sorter['sort'] = $sort;
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return $class::widget($this->sorter);
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}
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}
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