Completed
Push — 2.1-master-merge ( 240673 )
by Alexander
13:45
created

BaseListView::init()   A

Complexity

Conditions 4
Paths 5

Size

Total Lines 13
Code Lines 8

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 8
CRAP Score 4.0218

Importance

Changes 0
Metric Value
dl 0
loc 13
ccs 8
cts 9
cp 0.8889
rs 9.2
c 0
b 0
f 0
cc 4
eloc 8
nc 5
nop 0
crap 4.0218
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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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 * BaseListView is a base class for widgets displaying data from data provider
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 * such as ListView and GridView.
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 *
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 * It provides features like sorting, paging and also filtering the data.
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 *
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 * For more details and usage information on BaseListView, see the [guide article on data widgets](guide:output-data-widgets).
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 *
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 * @author Qiang Xue <[email protected]>
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 * @since 2.0
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 */
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abstract class BaseListView 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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     * @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
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     */
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    public $options = [];
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    /**
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     * @var \yii\data\DataProviderInterface 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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     * Note that the widget must support the `pagination` property which will be populated with the
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     * [[\yii\data\BaseDataProvider::pagination|pagination]] value of the [[dataProvider]].
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     */
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    public $pager = [];
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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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     * Note that the widget must support the `sort` property which will be populated with the
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     * [[\yii\data\BaseDataProvider::sort|sort]] value of the [[dataProvider]].
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     */
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    public $sorter = [];
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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 array the HTML attributes for the summary of the list view.
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     * The "tag" element specifies the tag name of the summary element and defaults to "div".
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     * @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
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     */
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    public $summaryOptions = ['class' => 'summary'];
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    /**
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     * @var bool whether to show an empty list view if [[dataProvider]] returns no data.
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     * The default value is false which displays an element according to the [[emptyText]]
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     * and [[emptyTextOptions]] properties.
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     */
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    public $showOnEmpty = false;
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    /**
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     * @var string|false the HTML content to be displayed when [[dataProvider]] does not have any data.
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     * When this is set to `false` no extra HTML content will be generated.
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     * The default value is the text "No results found." which will be translated to the current application language.
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     * @see showOnEmpty
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     * @see emptyTextOptions
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     */
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    public $emptyText;
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    /**
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     * @var array the HTML attributes for the emptyText of the list view.
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     * The "tag" element specifies the tag name of the emptyText element and defaults to "div".
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     * @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
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     */
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    public $emptyTextOptions = ['class' => '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 $layout = "{summary}\n{items}\n{pager}";
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    /**
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     * Renders the data models.
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     * @return string the rendering result.
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     */
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    abstract public function renderItems();
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    /**
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     * Initializes the view.
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     */
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    public function init()
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    {
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        parent::init();
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        if ($this->dataProvider === null) {
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            throw new InvalidConfigException('The "dataProvider" property must be set.');
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        }
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        if ($this->emptyText === null) {
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            $this->emptyText = Yii::t('yii', 'No results found.');
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        }
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        if (!isset($this->options['id'])) {
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            $this->options['id'] = $this->getId();
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        }
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    }
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    /**
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     * Runs the widget.
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     */
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    public function run()
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    {
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        if ($this->showOnEmpty || $this->dataProvider->getCount() > 0) {
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            $content = preg_replace_callback('/{\\w+}/', function ($matches) {
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                $content = $this->renderSection($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 = $this->renderEmpty();
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        }
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        $options = $this->options;
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        $tag = ArrayHelper::remove($options, 'tag', 'div');
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        return Html::tag($tag, $content, $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 $name the section name, e.g., `{summary}`, `{items}`.
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     * @return string|bool the rendering result of the section, or false if the named section is not supported.
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     */
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    public function renderSection($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 $this->renderSorter();
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            default:
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                return false;
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        }
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    }
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    /**
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     * Renders the HTML content indicating that the list view has no data.
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     * @return string the rendering result
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     * @see emptyText
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     */
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    public function renderEmpty()
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    {
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        if ($this->emptyText === false) {
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            return '';
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        }
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        $options = $this->emptyTextOptions;
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        $tag = ArrayHelper::remove($options, 'tag', 'div');
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        return Html::tag($tag, $this->emptyText, $options);
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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 = $this->dataProvider->getCount();
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        if ($count <= 0) {
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            return '';
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        }
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        $summaryOptions = $this->summaryOptions;
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        $tag = ArrayHelper::remove($summaryOptions, 'tag', 'div');
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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 + $count - 1;
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            if ($begin > $end) {
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                $begin = $end;
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            }
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            $page = $pagination->getPage() + 1;
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            $pageCount = $pagination->pageCount;
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            if (($summaryContent = $this->summary) === null) {
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                return Html::tag($tag, Yii::t('yii', 'Showing <b>{begin, number}-{end, number}</b> of <b>{totalCount, number}</b> {totalCount, plural, one{item} other{items}}.', [
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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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                    ]), $summaryOptions);
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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 = $this->summary) === null) {
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                return Html::tag($tag, Yii::t('yii', 'Total <b>{count, number}</b> {count, plural, one{item} other{items}}.', [
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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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                ]), $summaryOptions);
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            }
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        }
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        return Yii::$app->getI18n()->format($summaryContent, [
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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' => $pageCount,
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        ], Yii::$app->language);
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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 $class LinkPager */
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        $pager = $this->pager;
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        $class = ArrayHelper::remove($pager, 'class', LinkPager::class);
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        $pager['pagination'] = $pagination;
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        $pager['view'] = $this->getView();
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        return $class::widget($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 $class LinkSorter */
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        $sorter = $this->sorter;
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        $class = ArrayHelper::remove($sorter, 'class', LinkSorter::class);
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        $sorter['sort'] = $sort;
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        $sorter['view'] = $this->getView();
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        return $class::widget($sorter);
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    }
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}
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