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@@ -0,0 +1,61 @@
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+<?php
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+
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+namespace Dcat\Admin\Grid\Displayers;
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+
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+use Dcat\Admin\Admin;
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+use Dcat\Admin\Support\Helper;
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+use Illuminate\Support\Str;
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+
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+class Limit extends AbstractDisplayer
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+{
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+ protected function addScript()
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+ {
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+ $script = <<<'JS'
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+$('.limit-more').click(function () {
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+ $(this).parent('.limit-text').toggleClass('d-none').siblings().toggleClass('d-none');
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+});
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+JS;
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+
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+ Admin::script($script);
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+ }
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+
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+ public function display($limit = 100, $end = '...')
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+ {
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+ // 数组
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+ if ($this->value !== null && ! is_scalar($this->value)) {
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+ $value = Helper::array($this->value);
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+
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+ if (count($value) <= $limit) {
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+ return $value;
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+ }
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+
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+ $value = array_slice($value, 0, $limit);
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+
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+ array_push($value, $end);
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+
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+ return $value;
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+ }
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+
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+ // 字符串
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+ $this->addScript();
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+
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+ $value = Str::limit($this->value, $limit, $end);
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+
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+ $original = $this->column->getOriginal();
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+
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+ if ($value == $original) {
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+ return $value;
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+ }
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+
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+ return <<<HTML
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+<div class="limit-text">
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+ <span class="text">{$value}</span>
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+ <a href="javascript:void(0);" class="limit-more"> <i class="fa fa-angle-double-down"></i></a>
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+</div>
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+<div class="limit-text d-none">
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+ <span class="text">{$original}</span>
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+ <a href="javascript:void(0);" class="limit-more"> <i class="fa fa-angle-double-up"></i></a>
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+</div>
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+HTML;
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+ }
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+}
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jqh