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<?php
/**
* @copyright Copyright © Kartik Visweswaran, Krajee.com, 2014 - 2019
* @package yii2-widgets
* @subpackage yii2-widget-fileinput
* @version 1.0.9
*/
namespace kartik\file;
use Yii;
use yii\helpers\ArrayHelper;
use yii\helpers\Html;
use kartik\base\InputWidget;
use kartik\base\TranslationTrait;
/**
* Wrapper for the Bootstrap FileInput JQuery Plugin by Krajee. The FileInput widget is styled for Bootstrap 3.x
* & 4.x with ability to multiple file selection and preview, format button styles and inputs. Runs on all modern
* browsers supporting HTML5 File Inputs and File Processing API. For browser versions IE9 and below, this widget
* will gracefully degrade to a native HTML file input.
*
* @see http://plugins.krajee.com/bootstrap-fileinput
* @see https://github.com/kartik-v/bootstrap-fileinput
*
* @author Kartik Visweswaran <kartikv2@gmail.com>
* @since 2.0
* @see http://twitter.github.com/typeahead.js/examples
*/
class FileInput extends InputWidget
{
/**
* @var boolean whether to resize images on client side
*/
public $resizeImages = false;
/**
* @var boolean whether to auto orient images on client side
*/
public $autoOrientImages = true;
/**
* @var boolean whether to load sortable plugin to rearrange initial preview images on client side
*/
public $sortThumbs = true;
/**
* @var boolean whether to load dom purify plugin to purify HTML content in purfiy
*/
public $purifyHtml = true;
/**
* @var boolean whether to show 'plugin unsupported' message for IE browser versions 9 & below
*/
public $showMessage = true;
/*
* @var array HTML attributes for the container for the warning
* message for browsers running IE9 and below.
*/
public $messageOptions = ['class' => 'alert alert-warning'];
/**
* @inheritdoc
*/
public $pluginName = 'fileinput';
/**
* @var array the list of inbuilt themes
*/
protected static $_themes = ['fa', 'fas', 'gly', 'explorer', 'explorer-fa', 'explorer-fas'];
/**
* @inheritdoc
* @throws \ReflectionException
* @throws \yii\base\InvalidConfigException
*/
public function run()
{
return $this->initWidget();
}
/**
* Initializes widget
* @throws \ReflectionException
* @throws \yii\base\InvalidConfigException
*/
protected function initWidget()
{
$this->_msgCat = 'fileinput';
$this->initI18N(__DIR__);
$this->initLanguage();
$this->registerAssets();
if ($this->pluginLoading) {
Html::addCssClass($this->options, 'file-loading');
}
/**
* Auto-set form enctype for file uploads
*/
if (isset($this->field) && isset($this->field->form) && !isset($this->field->form->options['enctype'])) {
$this->field->form->options['enctype'] = 'multipart/form-data';
}
/**
* Auto-set multiple file upload naming convention
*/
if (ArrayHelper::getValue($this->options, 'multiple')) {
$hasModel = $this->hasModel();
if ($hasModel && strpos($this->attribute, '[]') === false) {
$this->attribute .= '[]';
} elseif (!$hasModel && strpos($this->name, '[]') === false) {
$this->name .= '[]';
}
}
$input = $this->getInput('fileInput');
$script = 'document.getElementById("' . $this->options['id'] . '").className.replace(/\bfile-loading\b/,"");';
if ($this->showMessage) {
$validation = ArrayHelper::getValue($this->pluginOptions, 'showPreview', true) ?
Yii::t('fileinput', 'file preview and multiple file upload') :
Yii::t('fileinput', 'multiple file upload');
$message = '<strong>' . Yii::t('fileinput', 'Note:') . '</strong> ' .
Yii::t(
'fileinput',
'Your browser does not support {validation}. Try an alternative or more recent browser to access these features.',
['validation' => $validation]
);
$content = Html::tag('div', $message, $this->messageOptions) . "<script>{$script};</script>";
$input .= "\n" . $this->validateIE($content);
}
return $input;
}
/**
* Validates and returns content based on IE browser version validation
*
* @param string $content
* @param string $validation
*
* @return string
*/
protected function validateIE($content, $validation = 'lt IE 10')
{
return "<!--[if {$validation}]><br>{$content}<![endif]-->";
}
/**
* Registers the asset bundle and locale
* @throws \yii\base\InvalidConfigException
*/
public function registerAssetBundle()
{
$view = $this->getView();
$this->pluginOptions['resizeImage'] = $this->resizeImages;
$this->pluginOptions['autoOrientImage'] = $this->autoOrientImages;
if ($this->resizeImages || $this->autoOrientImages) {
PiExifAsset::register($view);
}
if (empty($this->pluginOptions['theme']) && $this->isBs4()) {
$this->pluginOptions['theme'] = 'fas';
}
$theme = ArrayHelper::getValue($this->pluginOptions, 'theme');
if (!empty($theme) && in_array($theme, self::$_themes)) {
FileInputThemeAsset::register($view)->addTheme($theme);
}
if ($this->sortThumbs) {
SortableAsset::register($view);
}
if ($this->purifyHtml) {
DomPurifyAsset::register($view);
$this->pluginOptions['purifyHtml'] = true;
}
FileInputAsset::register($view)->addLanguage($this->language, '', 'js/locales');
}
/**
* Registers the needed assets
* @throws \yii\base\InvalidConfigException
*/
public function registerAssets()
{
$this->registerAssetBundle();
$this->registerPlugin($this->pluginName);
}
}