use Dcat\Admin\Form\Field\Editor;

Form\Field\Editor::resolving(function (Form\Field\Editor $editor) {
    $editor->options([
        'file_picker_types' => 'file',
        'file_picker_callback' => \Dcat\Admin\Support\JavaScript::make(<<<JS
            function file_picker_callback (callback, value, meta) {
                // 设置上传地址为原富文本框图片文件上传地址
                var upurl = opts.images_upload_url;
                var filetype = '';
                // 处理媒体类型文件能选择的文件类型
                if (meta.filetype == 'file') {
                    filetype = '.word,.doc,.docx,.xlsx,.xls'
                }
                //模拟出一个input用于添加本地文件
                var input = document.createElement('input');
                input.setAttribute('type', 'file');
                input.setAttribute('accept', filetype);
                // 模拟点击file input
                input.click();
                input.onchange = function() {
                    // 文件选择后进行上传
                    var file = this.files[0];
                    var xhr, formData;
                    console.log(file.name);
                    xhr = new XMLHttpRequest();
                    xhr.withCredentials = false;
                    xhr.open('POST', upurl);
                    xhr.onload = function() {
                        var json;
                        if (xhr.status != 200) {
                            failure('HTTP Error: ' + xhr.status);
                            return;
                        }
                        json = JSON.parse(xhr.responseText);
                        if (!json || typeof json.location != 'string') {
                            failure('Invalid JSON: ' + xhr.responseText);
                            return;
                        }
                        callback(json.location);
                    };
                    formData = new FormData();
                    formData.append('file', file, file.name );
                    xhr.send(formData);
                }
            }
        JS)
    ]);
});