<?php
/**
* User: delboy1978uk
* Date: 04/12/2016
* Time: 22:33
*/
namespace Del\Form\Renderer\Field;
use Del\Form\Field\FieldInterface;
use Del\Form\Field\FileUpload;
use DOMElement;
use DOMNode;
use DOMText;
use InvalidArgumentException;
class FileUploadRender extends AbstractFieldRender implements FieldRendererInterface
{
/**
* @param FieldInterface $field
* @param DOMElement $element
* @return DOMNode
*/
public function renderBlock(FieldInterface $field, DOMElement $element)
{
// Make sure the FieldInterface is actually a Radio
if (!$field instanceof FileUpload) {
throw new InvalidArgumentException('Must be a Del\Form\Field\FileUpload');
}
$div = $this->getDom()->createElement('div');
$script = $this->getDom()->createElement('script');
$style = $this->getDom()->createElement('style');
$style->setAttribute('type', 'text/css');
$style->appendChild(new DOMText($this->getStyle()));
$input = $this->getDom()->createElement('input');
$span = $this->getDom()->createElement('span');
$innerSpan = $this->getDom()->createElement('span');
$text = new DOMText($field->getLabel());
$innerSpan->setAttribute('class', 'btn btn-primary btn-file');
$innerSpan->appendChild($text);
$innerSpan->appendChild($element);
$span->setAttribute('class', 'input-group-btn');
$span->appendChild($innerSpan);
$input->setAttribute('type', 'text');
$input->setAttribute('class', 'form-control');
$input->setAttribute('readonly', 'readonly');
$script->setAttribute('type', 'text/javascript');
$code = new DOMText($this->getJavascript());
$script->appendChild($code);
$div->setAttribute('class', 'input-group');
$div->appendChild($span);
$div->appendChild($input);
$div->appendChild($style);
$div->appendChild($script);
return $div;
}
/**
* @return string
*/
private function getJavascript()
{
return <<<END
$(document).on('change', '.btn-file :file', function() {
var input = $(this),
numFiles = input.get(0).files ? input.get(0).files.length : 1,
label = input.val().replace(/\\\\/g, '/').replace(/.*\//, '');
input.trigger('fileselect', [numFiles, label]);
});
$(document).ready( function() {
$('.btn-file :file').on('fileselect', function(event, numFiles, label) {
var input = $(this).parents('.input-group').find(':text'),
log = numFiles > 1 ? numFiles + ' files selected' : label;
if( input.length ) {
input.val(log);
} else {
if( log ) alert(log);
}
});
});
END;
}
private function getStyle()
{
return <<<END
.btn-file {
position: relative;
overflow: hidden;
}
.btn-file input[type=file] {
position: absolute;
top: 0;
right: 0;
min-width: 100%;
min-height: 100%;
font-size: 100px;
text-align: right;
filter: alpha(opacity=0);
opacity: 0;
outline: none;
background: white;
cursor: inherit;
display: block;
}
input[readonly] {
background-color: white !important;
cursor: text !important;
}
END;
}
}
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