ImageUpload

<?php

class ImageUpload extends \Bingo\FormElement {

    static function register() {

        \Form::extend("imageUpload",
        function ($form,$name,$label=false,$rules='',$value=false,$folder=false,$thumbSize=150,$multiple=false,$vertical=false,$atts=false) {
            $form->add(new ImageUpload(compact('name','label','rules','value','folder','thumbSize','multiple','vertical')));
            return $form;
        });

    }

    function __construct($args) {
        parent::__construct($args);

        $rules = $this->rules;

        if (is_string($rules)) $rules = explode('|',$rules);
        if (!is_array($rules)) $rules = array($rules);

        $this->rules = array_merge(array(
            function ($val,$el) {
                if ($val=='keep') return $el->value;
                $new = false;

                if ($val=='upload') {
                    $parts = explode("[",$el->name);
                    foreach ($parts as $p=>$part) $parts[$p] = str_replace("]","",$part);

                    $tmp_name = false;
                    $file_name = false;
                    $error = false;

                    foreach ($parts as $p=>$part) {
                        if ($p==0) {
                            $tmp_name = @$_FILES["file_".$part]['tmp_name'];
                            $file_name = @$_FILES["file_".$part]['name'];
                            $error = @$_FILES["file_".$part]['error'];
                        } else {
                            $tmp_name = @$tmp_name[$part];
                            $file_name = @$file_name[$part];
                            $error = @$error[$part];
                        }
                    }

                    $errors = is_array($error) ? $error : array($error);
                    foreach ($errors as $err) {
                        if ($err==UPLOAD_ERR_FORM_SIZE || $err==UPLOAD_ERR_INI_SIZE) {
                            throw new \ValidationException('File is too large');
                        }
                        if ($err!=UPLOAD_ERR_OK && $err!=UPLOAD_ERR_NO_FILE) {
                            throw new \ValidationException('Upload error #'.$err.', contact server administrator');
                        }
                    }


                    if ($file_name && $tmp_name) {
                        if (is_array($file_name)) {
                            $ret = array();
                            foreach ($file_name as $i=>$f) {
                                $pinfo = pathinfo($file_name[$i]);
                                $new_name = $pinfo['filename']."_".uniqid().(isset($pinfo["extension"]) ? ".".$pinfo["extension"] : '');
                                $ret[] = array('old'=>$el->value,'tmp'=>$tmp_name[$i],'new'=>$new_name);
                            }
                            return $ret;
                        } else {
                            $pinfo = pathinfo($file_name);
                            $new_name = $pinfo['filename']."_".uniqid().(isset($pinfo["extension"]) ? ".".$pinfo["extension"] : '');
                            return array('old'=>$el->value,'tmp'=>$tmp_name,'new'=>$new_name);
                        }
                    }
                }
                if (!$el->value) return false;
                return array('old'=>$el->value,'tmp'=>false,'new'=>false);
            }
        ),$rules);
    }

    function render() {
        echo "<div class='image-upload'>";
        $this->render_label();
        $this->render_element();
        $this->render_error();
        echo "</div>";
    }

    function render_element() {
        $value = $this->value;
        $size = $this->thumbSize;
        $vertical = $this->vertical;

        if (is_array($value)) {
            $value = isset($value[0]) ? $value[0]['old'] : $value['old'];
        }

        if ($vertical)
            $style = "margin-top:".($size+10)."px;margin-bottom: 20px";
        else
            $style = "margin-left:".($size+10)."px;margin-bottom: 20px";

        echo "<div style='overflow:hidden'>";
            if ($size) {
                echo "<div style='line-height:{$size}px;text-align:center;float:left;width:{$size}px;height:{$size}px;border:1px solid #aaa;font-size:0;'>";
                if ($value && file_exists(INDEX_DIR."/content/images_mysql/".$this->folder."/".$value)) {
                    echo "<a class='colorbox' rel='upl' href='".INDEX_URL."/content/images_mysql/".$this->folder."/"._e($value)."'>";
                    echo "<img style='display:inline-block;vertical-align:middle;' src='".r_url($this->folder."/".$value,$size,$size,false)."'>";
                    echo "</a>";
                }
                echo "</div>";
            } else {
                $str = $this->error ? '' : htmlspecialchars($value);
                echo "<div class='value' style='margin-top:2px'>".$str."</div>";
            }
            echo "<div class='image-select' style='".$style."'>";
                echo "<label><input style='width:auto' checked='checked' type='radio' {$this->attr('name')} value='keep'>Keep</label>";
                echo "<label><input style='width:auto' type='radio' {$this->attr('name')} value='upload'>Replace<br>";

                $name = "file_".$this->name . ($this->multiple ? "[]":"");
                $accept = $size ? "accept='image/*'" : "";
                echo "<input onclick='$(this).parent().click()' style='width:80px' size='5' type='file' ".($this->multiple ? "multiple='multiple'":"")." name='$name' $accept />";
                echo "</label>";
            echo "</div>";
        echo "</div>";
    }
}