Dcat-Admin/src/Form/Field/SelectTable.php

<?php

namespace Dcat\Admin\Form\Field;

use Dcat\Admin\Form\Field;
use Dcat\Admin\Grid\LazyRenderable;
use Dcat\Admin\Support\Helper;
use Dcat\Admin\Widgets\DialogTable;
use Illuminate\Support\Str;

class SelectTable extends Field
{
    use PlainInput;

    /**
     * @var DialogTable
     */
    protected $dialog;

    protected $style = 'primary';

    protected $visibleColumn;

    protected $key;

    public function __construct($column, $arguments = [])
    {
        parent::__construct($column, $arguments);

        $this->dialog = DialogTable::make($this->label);
    }

    /**
     * 设置弹窗标题.
     *
     * @param string $title
     *
     * @return $this
     */
    public function title($title)
    {
        $this->dialog->title($title);

        return $this;
    }

    /**
     * 设置弹窗宽度.
     *
     * @example
     *    $this->width('500px');
     *    $this->width('50%');
     *
     * @param string $width
     *
     * @return $this
     */
    public function dialogWidth(string $width)
    {
        $this->dialog->width($width);

        return $this;
    }

    /**
     * 设置表格异步渲染实例.
     *
     * @param LazyRenderable $renderable
     *
     * @return $this
     */
    public function from(LazyRenderable $renderable)
    {
        $this->dialog->from($renderable);

        return $this;
    }

    /**
     * 设置选中的key以及标题字段.
     *
     * @param $visibleColumn
     * @param $key
     *
     * @return $this
     */
    public function pluck(?string $visibleColumn, ?string $key = 'id')
    {
        $this->visibleColumn = $visibleColumn;
        $this->key = $key;

        return $this;
    }

    /**
     * 联动加载.
     *
     * @param string $field
     * @param string $sourceUrl
     * @param string $idField
     * @param string $textField
     *
     * @return $this
     */
    public function load($field, $sourceUrl, string $idField = 'id', string $textField = 'text')
    {
        if (Str::contains($field, '.')) {
            $field = $this->formatName($field);
        }

        $class = $this->normalizeElementClass($field);

        $url = admin_url($sourceUrl);

        return $this->addVariables(['load' => compact('url', 'class', 'idField', 'textField')]);
    }

    /**
     * 联动加载多个字段.
     *
     * @param string $fields
     * @param string $sourceUrls
     * @param string $idField
     * @param string $textField
     *
     * @return $this
     */
    public function loads($fields = [], $sourceUrls = [], string $idField = 'id', string $textField = 'text')
    {
        $fieldsStr = implode('^', array_map(function ($field) {
            if (Str::contains($field, '.')) {
                return $this->normalizeElementClass($field).'_';
            }

            return $this->normalizeElementClass($field);
        }, (array) $fields));
        $urlsStr = implode('^', array_map(function ($url) {
            return admin_url($url);
        }, (array) $sourceUrls));

        return $this->addVariables(['loads' => [
            'fields'    => $fieldsStr,
            'urls'      => $urlsStr,
            'idField'   => $idField,
            'textField' => $textField,
        ]]);
    }

    /**
     * @param array $options
     *
     * @return $this
     */
    public function options($options = [])
    {
        $this->options = $options;

        return $this;
    }

    /**
     * 设置选中数据显示.
     *
     * @param string $model
     * @param string $id
     * @param string $text
     *
     * @return $this
     */
    public function model(string $model, string $id = 'id', string $text = 'title')
    {
        return $this->pluck($text, $id)->options(function ($v) use ($model, $id, $text) {
            if (! $v) {
                return [];
            }

            return $model::find($v)->pluck($text, $id);
        });
    }

    protected function formatOptions()
    {
        $value = Helper::array($this->value());

        if ($this->options instanceof \Closure) {
            $this->options = $this->options->call($this->values(), $value, $this);
        }

        $values = [];

        foreach (Helper::array($this->options) as $id => $label) {
            foreach ($value as $v) {
                if ($v == $id && $v !== null) {
                    $values[] = ['id' => $v, 'label' => $label];
                }
            }
        }

        $this->options = $values;
    }

    protected function setUpTable()
    {
        $this->dialog
            ->footer($this->renderFooter())
            ->button($this->renderButton());

        // 设置选中的字段和待显示的标题字段
        $this->dialog
            ->getTable()
            ->getRenderable()
            ->payload([
                LazyRenderable::ROW_SELECTOR_COLUMN_NAME => [$this->key, $this->visibleColumn],
            ]);
    }

    public function render()
    {
        $this->setUpTable();
        $this->formatOptions();

        $this->prepend('<i class="feather icon-arrow-up"></i>')
            ->defaultAttribute('class', 'form-control '.$this->getElementClassString())
            ->defaultAttribute('type', 'text')
            ->defaultAttribute('name', $this->getElementName());

        $this->addVariables([
            'prepend'        => $this->prepend,
            'append'         => $this->append,
            'style'          => $this->style,
            'dialog'         => $this->dialog->render(),
            'placeholder'    => $this->placeholder(),
            'dialogSelector' => $this->dialog->getElementSelector(),
        ]);

        return parent::render();
    }

    protected function renderButton()
    {
        return <<<HTML
<div class="btn btn-{$this->style}">
    &nbsp;<i class="feather icon-arrow-up"></i>&nbsp;
</div>
HTML;
    }

    /**
     * 弹窗底部内容构建.
     *
     * @return string
     */
    protected function renderFooter()
    {
        $submit = trans('admin.submit');
        $cancel = trans('admin.cancel');

        return <<<HTML
<button class="btn btn-primary btn-sm submit-btn" style="color: #fff">&nbsp;{$submit}&nbsp;</button>&nbsp;
<button  class="btn btn-white btn-sm cancel-btn">&nbsp;{$cancel}&nbsp;</button>
HTML;
    }
}