DatePicker.php

<?php

namespace mjm\jdate;

use yii\helpers\Json;
use yii\helpers\Html;
use yii\base\InvalidConfigException;
use yii\widgets\InputWidget;
/**
 * Jalali date & time.
 * @author Mohammad Mahdi Gholomian.
 * @copyright 2014 mm.gholamian@yahoo.com
 */
class DatePicker extends InputWidget
{
	/**
	 * @var array Date picker options.
	 */
	public $clientOptions = ['formatDate' => "YYYY/0M/0D"];
	/**
	 * @var string Theme name.
	 *			   Date picker currently have 2 theme : dark, default.
	 */
	public $theme = 'default';
	/**
	 * @inheritdoc
	 */
	public function init()
	{
		parent::init();
		if(! is_string($this->theme)) {
			throw new InvalidConfigException(
				"Theme name must be a string."
			);
		}
	}
	/**
     * Executes the widget.
     */
	function run()
	{
		echo $this->renderInput();

		$this->renderJsCode();
	}
	/**
	 * Register datepicker default theme asset into view.
	 */
	function registerDefaultThemeAsset()
	{
		DatePickerDefaultThemeAsset::register($this->getView());
	}
	/**
	 * Register datepicker dark theme asset into view.
	 */
	function registerDarkThemeAsset()
	{
		DatePickerDarkThemeAsset::register($this->getView());
	}
	/**
	 * Register datepicker assets without css into view.
	 */
	function registerNoThemeAsset()
	{
		DatePickerAsset::register($this->getView());
	}

	/**
	 * Render input.
	 */
	function renderInput()
	{
		if ($this->hasModel()) {
			return Html::activeTextInput($this->model, $this->attribute, $this->options);
		} else {
			return Html::textInput($this->name, $this->value, $this->options);
		}
	}
	/**
	 * Render Js code.
	 */
	function renderJsCode()
	{
		//Jquery plugin name.
		$name = 'persianDatepicker';

		$id = $this->options['id'];
		// Set theme name in clientOptions.
		$this->clientOptions['theme'] = $this->theme;
		// Build onSelect event.
		if(! isset($this->clientOptions['onSelect'])) {
			$this->clientOptions['onSelect'] = "function(){
				$('#$id').trigger('change');
			}";
		}
		// Register theme assets.
		if(in_array($this->theme, ['default', 'dark'])) {
			$this->{"register" . ucfirst($this->theme) . "ThemeAsset"}();
		} else {
				$this->registerNoThemeAsset();
		}
		// Add events.
		$onSelect = $this->clientOptions['onSelect'];

		if(isset($this->clientOptions['onShow'])) {
			$onShow =  $this->clientOptions['onSelect'];
		}

		if(isset($this->clientOptions['onHide'])) {
			$onShow =  $this->clientOptions['onHide'];
		}

		unset($this->clientOptions['onHide'], $this->clientOptions['onShow'], $this->clientOptions['onSelect']);

		$options = empty($this->clientOptions) ? '' : Json::encode($this->clientOptions);
		
		if(isset($onShow) || isset($onHide) || isset($onSelect)) {
			$options = substr($options, 0, -1);

			if(isset($onShow)) {
				$options .= ', "onShow" : ' . $onShow;
			}

			if(isset($onHide)) {
				$options .= ', "onHide" : ' . $onHide;
			}

			if(isset($onSelect)) {
				$options .= ', "onSelect" : ' . $onSelect;
			}
			$options .= '}';
		}
		$js = "jQuery('#$id').$name($options);";
		// Register js code.
		$this->getView()->registerJs($js);
	}
}