BaseListView.php 8.18 KB
Newer Older
Qiang Xue committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
<?php
/**
 * @link http://www.yiiframework.com/
 * @copyright Copyright (c) 2008 Yii Software LLC
 * @license http://www.yiiframework.com/license/
 */

namespace yii\widgets;

use Yii;
use yii\base\InvalidConfigException;
use yii\base\Widget;
use yii\helpers\ArrayHelper;
use yii\helpers\Html;

/**
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @since 2.0
 */
20
abstract class BaseListView extends Widget
Qiang Xue committed
21
{
22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73
    /**
     * @var array the HTML attributes for the container tag of the list view.
     * The "tag" element specifies the tag name of the container element and defaults to "div".
     * @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
     */
    public $options = [];
    /**
     * @var \yii\data\DataProviderInterface the data provider for the view. This property is required.
     */
    public $dataProvider;
    /**
     * @var array the configuration for the pager widget. By default, [[LinkPager]] will be
     * used to render the pager. You can use a different widget class by configuring the "class" element.
     */
    public $pager = [];
    /**
     * @var array the configuration for the sorter widget. By default, [[LinkSorter]] will be
     * used to render the sorter. You can use a different widget class by configuring the "class" element.
     */
    public $sorter = [];
    /**
     * @var string the HTML content to be displayed as the summary of the list view.
     * If you do not want to show the summary, you may set it with an empty string.
     *
     * The following tokens will be replaced with the corresponding values:
     *
     * - `{begin}`: the starting row number (1-based) currently being displayed
     * - `{end}`: the ending row number (1-based) currently being displayed
     * - `{count}`: the number of rows currently being displayed
     * - `{totalCount}`: the total number of rows available
     * - `{page}`: the page number (1-based) current being displayed
     * - `{pageCount}`: the number of pages available
     */
    public $summary;
    /**
     * @var boolean whether to show the list view if [[dataProvider]] returns no data.
     */
    public $showOnEmpty = false;
    /**
     * @var string the HTML content to be displayed when [[dataProvider]] does not have any data.
     */
    public $emptyText;
    /**
     * @var string the layout that determines how different sections of the list view should be organized.
     * The following tokens will be replaced with the corresponding section contents:
     *
     * - `{summary}`: the summary section. See [[renderSummary()]].
     * - `{items}`: the list items. See [[renderItems()]].
     * - `{sorter}`: the sorter. See [[renderSorter()]].
     * - `{pager}`: the pager. See [[renderPager()]].
     */
    public $layout = "{summary}\n{items}\n{pager}";
Qiang Xue committed
74

75 76 77 78 79
    /**
     * Renders the data models.
     * @return string the rendering result.
     */
    abstract public function renderItems();
Qiang Xue committed
80

81 82 83 84 85 86 87 88 89 90 91 92 93
    /**
     * Initializes the view.
     */
    public function init()
    {
        if ($this->dataProvider === null) {
            throw new InvalidConfigException('The "dataProvider" property must be set.');
        }
        if ($this->emptyText === null) {
            $this->emptyText = Yii::t('yii', 'No results found.');
        }
        $this->dataProvider->prepare();
    }
Qiang Xue committed
94

95 96 97 98 99 100 101 102
    /**
     * Runs the widget.
     */
    public function run()
    {
        if ($this->dataProvider->getCount() > 0 || $this->showOnEmpty) {
            $content = preg_replace_callback("/{\\w+}/", function ($matches) {
                $content = $this->renderSection($matches[0]);
Qiang Xue committed
103

104 105 106 107 108 109 110 111
                return $content === false ? $matches[0] : $content;
            }, $this->layout);
        } else {
            $content = $this->renderEmpty();
        }
        $tag = ArrayHelper::remove($this->options, 'tag', 'div');
        echo Html::tag($tag, $content, $this->options);
    }
Qiang Xue committed
112

113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133
    /**
     * Renders a section of the specified name.
     * If the named section is not supported, false will be returned.
     * @param  string         $name the section name, e.g., `{summary}`, `{items}`.
     * @return string|boolean the rendering result of the section, or false if the named section is not supported.
     */
    public function renderSection($name)
    {
        switch ($name) {
            case '{summary}':
                return $this->renderSummary();
            case '{items}':
                return $this->renderItems();
            case '{pager}':
                return $this->renderPager();
            case '{sorter}':
                return $this->renderSorter();
            default:
                return false;
        }
    }
Qiang Xue committed
134

135 136 137 138 139 140 141 142 143
    /**
     * Renders the HTML content indicating that the list view has no data.
     * @return string the rendering result
     * @see emptyText
     */
    public function renderEmpty()
    {
        return '<div class="empty">' . ($this->emptyText === null ? Yii::t('yii', 'No results found.') : $this->emptyText) . '</div>';
    }
144

145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188
    /**
     * Renders the summary text.
     */
    public function renderSummary()
    {
        $count = $this->dataProvider->getCount();
        if ($count <= 0) {
            return '';
        }
        if (($pagination = $this->dataProvider->getPagination()) !== false) {
            $totalCount = $this->dataProvider->getTotalCount();
            $begin = $pagination->getPage() * $pagination->pageSize + 1;
            $end = $begin + $count - 1;
            if ($begin > $end) {
                $begin = $end;
            }
            $page = $pagination->getPage() + 1;
            $pageCount = $pagination->pageCount;
            if (($summaryContent = $this->summary) === null) {
                return '<div class="summary">'
                    . Yii::t('yii', 'Showing <b>{begin, number}-{end, number}</b> of <b>{totalCount, number}</b> {totalCount, plural, one{item} other{items}}.', [
                        'begin' => $begin,
                        'end' => $end,
                        'count' => $count,
                        'totalCount' => $totalCount,
                        'page' => $page,
                        'pageCount' => $pageCount,
                    ])
                    . '</div>';
            }
        } else {
            $begin = $page = $pageCount = 1;
            $end = $totalCount = $count;
            if (($summaryContent = $this->summary) === null) {
                return '<div class="summary">' . Yii::t('yii', 'Total <b>{count, number}</b> {count, plural, one{item} other{items}}.', [
                    'begin' => $begin,
                    'end' => $end,
                    'count' => $count,
                    'totalCount' => $totalCount,
                    'page' => $page,
                    'pageCount' => $pageCount,
                ]) . '</div>';
            }
        }
Qiang Xue committed
189

190 191 192 193 194 195 196 197 198
        return Yii::$app->getI18n()->format($summaryContent, [
            'begin' => $begin,
            'end' => $end,
            'count' => $count,
            'totalCount' => $totalCount,
            'page' => $page,
            'pageCount' => $pageCount,
        ], Yii::$app->language);
    }
Qiang Xue committed
199

200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236
    /**
     * Renders the pager.
     * @return string the rendering result
     */
    public function renderPager()
    {
        $pagination = $this->dataProvider->getPagination();
        if ($pagination === false || $this->dataProvider->getCount() <= 0) {
            return '';
        }
        /** @var LinkPager $class */
        $class = ArrayHelper::remove($this->pager, 'class', LinkPager::className());
        $pager = $this->pager;
        $pager['pagination'] = $pagination;
        $pager['view'] = $this->getView();

        return $class::widget($pager);
    }

    /**
     * Renders the sorter.
     * @return string the rendering result
     */
    public function renderSorter()
    {
        $sort = $this->dataProvider->getSort();
        if ($sort === false || empty($sort->attributes) || $this->dataProvider->getCount() <= 0) {
            return '';
        }
        /** @var LinkSorter $class */
        $class = ArrayHelper::remove($this->sorter, 'class', LinkSorter::className());
        $sorter = $this->sorter;
        $sorter['sort'] = $sort;
        $sorter['view'] = $this->getView();

        return $class::widget($sorter);
    }
Qiang Xue committed
237
}