/**********************************************************************************
*
*    Copyright (c) 2017-2019 MuK IT GmbH.
*
*    This file is part of MuK Web Utils 
*    (see https://mukit.at).
*
*    This program is free software: you can redistribute it and/or modify
*    it under the terms of the GNU Lesser General Public License as published by
*    the Free Software Foundation, either version 3 of the License, or
*    (at your option) any later version.
*
*    This program is distributed in the hope that it will be useful,
*    but WITHOUT ANY WARRANTY; without even the implied warranty of
*    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*    GNU Lesser General Public License for more details.
*
*    You should have received a copy of the GNU Lesser General Public License
*    along with this program. If not, see <http://www.gnu.org/licenses/>.
*
**********************************************************************************/

$.fn.textWidth = function(text, font) {
    if (!$.fn.textWidth.fakeEl) $.fn.textWidth.fakeEl = $('<span>').hide().appendTo(document.body);
    $.fn.textWidth.fakeEl.text(text || this.val() || this.text()).css('font', font || this.css('font'));
    return $.fn.textWidth.fakeEl.width();
};

$.fn.dndHover = function(options) {
	return this.each(function() {
        var self = $(this);
        var collection = $();
        var dragenter = function(event) {
            if (collection.size() === 0) {
                self.trigger('dndHoverStart', [event]);
            }
            collection = collection.add(event.target);
        };
        var dragleave = function(event) {
            setTimeout(function() {
                collection = collection.not(event.target);
                if (collection.size() === 0) {
                    self.trigger('dndHoverEnd', [event]);
                }
            }, 1);
        };
        var drop = function(event) {
            setTimeout(function() {
            	collection = $();
            	self.trigger('dndHoverEnd', [event]);
            }, 1);
        };
        if(options && options === 'destroy') {
        	self.off('dragenter.dnd_hover');
	        self.off('dragleave.dnd_hover');
	        self.off('drop.dnd_hover');
        } else {
        	self.on('dragenter.dnd_hover', dragenter);
	        self.on('dragleave.dnd_hover', dragleave);
	        self.on('drop.dnd_hover', drop);
        }
    });
};

$.ajaxTransport("+binary", function(options, originalOptions, jqXHR) {
    if (window.FormData && ((options.dataType && (options.dataType == 'binary')) || 
    		(options.data && ((window.ArrayBuffer && options.data instanceof ArrayBuffer) ||
    		(window.Blob && options.data instanceof Blob))))) {
		return {
			send: function(headers, callback){
				var xhr = new XMLHttpRequest();
				var url = options.url,
					type = options.type,
					async = options.async || true,
					dataType = options.responseType || 'blob',
					data = options.data || null,
					username = options.username,
					password = options.password;
				xhr.addEventListener('load', function(){
					var data = {};
					data[options.dataType] = xhr.response;
					callback(xhr.status, xhr.statusText, data, xhr.getAllResponseHeaders());
				});
				xhr.open(type, url, async, username, password);
				for (var i in headers ) {
					xhr.setRequestHeader(i, headers[i] );
				}
				if (options.xhrFields) {
					for (var key in options.xhrFields) {
						if (key in xhr) {
							xhr[key] = options.xhrFields[key];
						}
					}
				}
				xhr.responseType = dataType;
				xhr.send(data);
			},
			abort: function(){
				jqXHR.abort();
			}
		};
	}
});