1067 lines
33 KiB
JavaScript
1067 lines
33 KiB
JavaScript
/**
|
|
* http://github.com/valums/file-uploader
|
|
*
|
|
* Multiple file upload component with progress-bar, drag-and-drop.
|
|
* © 2010 Andrew Valums andrew(at)valums.com
|
|
*
|
|
* Licensed under GNU GPL 2 or later, see license.txt.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
var qq = qq || {};
|
|
|
|
/**
|
|
* Class that creates our multiple file upload widget
|
|
*/
|
|
qq.FileUploader = function(o){
|
|
this._options = {
|
|
// container element DOM node (ex. $(selector)[0] for jQuery users)
|
|
element: null,
|
|
// url of the server-side upload script, should be on the same domain
|
|
action: '/server/upload',
|
|
// additional data to send, name-value pairs
|
|
params: {},
|
|
// ex. ['jpg', 'jpeg', 'png', 'gif'] or []
|
|
allowedExtensions: [],
|
|
// size limit in bytes, 0 - no limit
|
|
// this option isn't supported in all browsers
|
|
sizeLimit: 0,
|
|
onSubmit: function(id, fileName){},
|
|
onComplete: function(id, fileName, responseJSON){},
|
|
|
|
//
|
|
// UI customizations
|
|
|
|
template: '<div class="qq-uploader">' +
|
|
'<div class="qq-upload-drop-area"><span>Drop photos here to upload</span></div>' +
|
|
'<div class="qq-upload-button">Upload a photo</div>' +
|
|
'<ul class="qq-upload-list"></ul>' +
|
|
'</div>',
|
|
|
|
// template for one item in file list
|
|
fileTemplate: '<li>' +
|
|
'<span class="qq-upload-file"></span>' +
|
|
'<span class="qq-upload-spinner"></span>' +
|
|
'<span class="qq-upload-size"></span>' +
|
|
'<a class="qq-upload-cancel" href="#">Cancel</a>' +
|
|
'<span class="qq-upload-failed-text">Failed</span>' +
|
|
'</li>',
|
|
|
|
classes: {
|
|
// used to get elements from templates
|
|
button: 'qq-upload-button',
|
|
drop: 'qq-upload-drop-area',
|
|
dropActive: 'qq-upload-drop-area-active',
|
|
list: 'qq-upload-list',
|
|
|
|
file: 'qq-upload-file',
|
|
spinner: 'qq-upload-spinner',
|
|
size: 'qq-upload-size',
|
|
cancel: 'qq-upload-cancel',
|
|
|
|
// added to list item when upload completes
|
|
// used in css to hide progress spinner
|
|
success: 'qq-upload-success',
|
|
fail: 'qq-upload-fail'
|
|
},
|
|
messages: {
|
|
//serverError: "Some files were not uploaded, please contact support and/or try again.",
|
|
typeError: "{file} has invalid extension. Only {extensions} are allowed.",
|
|
sizeError: "{file} is too large, maximum file size is {sizeLimit}.",
|
|
emptyError: "{file} is empty, please select files again without it."
|
|
},
|
|
showMessage: function(message){
|
|
alert(message);
|
|
}
|
|
};
|
|
|
|
qq.extend(this._options, o);
|
|
|
|
this._element = this._options.element;
|
|
|
|
if (this._element.nodeType != 1){
|
|
throw new Error('element param of FileUploader should be dom node');
|
|
}
|
|
|
|
this._element.innerHTML = this._options.template;
|
|
|
|
// number of files being uploaded
|
|
this._filesInProgress = 0;
|
|
|
|
// easier access
|
|
this._classes = this._options.classes;
|
|
|
|
this._handler = this._createUploadHandler();
|
|
|
|
this._bindCancelEvent();
|
|
|
|
var self = this;
|
|
this._button = new qq.UploadButton({
|
|
element: this._getElement('button'),
|
|
multiple: qq.UploadHandlerXhr.isSupported(),
|
|
onChange: function(input){
|
|
self._onInputChange(input);
|
|
}
|
|
});
|
|
|
|
this._setupDragDrop();
|
|
};
|
|
|
|
qq.FileUploader.prototype = {
|
|
setParams: function(params){
|
|
this._options.params = params;
|
|
},
|
|
/**
|
|
* Returns true if some files are being uploaded, false otherwise
|
|
*/
|
|
isUploading: function(){
|
|
return !!this._filesInProgress;
|
|
},
|
|
/**
|
|
* Gets one of the elements listed in this._options.classes
|
|
*
|
|
* First optional element is root for search,
|
|
* this._element is default value.
|
|
*
|
|
* Usage
|
|
* 1. this._getElement('button');
|
|
* 2. this._getElement(item, 'file');
|
|
**/
|
|
_getElement: function(parent, type){
|
|
if (typeof parent == 'string'){
|
|
// parent was not passed
|
|
type = parent;
|
|
parent = this._element;
|
|
}
|
|
|
|
var element = qq.getByClass(parent, this._options.classes[type])[0];
|
|
|
|
if (!element){
|
|
throw new Error('element not found ' + type);
|
|
}
|
|
|
|
return element;
|
|
},
|
|
_error: function(code, fileName){
|
|
var message = this._options.messages[code];
|
|
message = message.replace('{file}', this._formatFileName(fileName));
|
|
message = message.replace('{extensions}', this._options.allowedExtensions.join(', '));
|
|
message = message.replace('{sizeLimit}', this._formatSize(this._options.sizeLimit));
|
|
this._options.showMessage(message);
|
|
},
|
|
_formatFileName: function(name){
|
|
if (name.length > 33){
|
|
name = name.slice(0, 19) + '...' + name.slice(-13);
|
|
}
|
|
return name;
|
|
},
|
|
_isAllowedExtension: function(fileName){
|
|
var ext = (-1 !== fileName.indexOf('.')) ? fileName.replace(/.*[.]/, '').toLowerCase() : '';
|
|
var allowed = this._options.allowedExtensions;
|
|
|
|
if (!allowed.length){return true;}
|
|
|
|
for (var i=0; i<allowed.length; i++){
|
|
if (allowed[i].toLowerCase() == ext){
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
},
|
|
_setupDragDrop: function(){
|
|
var self = this,
|
|
dropArea = this._getElement('drop');
|
|
|
|
var dz = new qq.UploadDropZone({
|
|
element: dropArea,
|
|
onEnter: function(e){
|
|
qq.addClass(dropArea, self._classes.dropActive);
|
|
e.stopPropagation();
|
|
},
|
|
onLeave: function(e){
|
|
e.stopPropagation();
|
|
},
|
|
onLeaveNotDescendants: function(e){
|
|
qq.removeClass(dropArea, self._classes.dropActive);
|
|
},
|
|
onDrop: function(e){
|
|
dropArea.style.display = 'none';
|
|
qq.removeClass(dropArea, self._classes.dropActive);
|
|
self._uploadFileList(e.dataTransfer.files);
|
|
}
|
|
});
|
|
|
|
dropArea.style.display = 'none';
|
|
|
|
qq.attach(document, 'dragenter', function(e){
|
|
if (!dz._isValidFileDrag(e)) return;
|
|
|
|
dropArea.style.display = 'block';
|
|
});
|
|
|
|
qq.attach(document, 'dragleave', function(e){
|
|
if (!dz._isValidFileDrag(e)) return;
|
|
|
|
var relatedTarget = document.elementFromPoint(e.clientX, e.clientY);
|
|
|
|
// only fire when leaving document out
|
|
if ( ! relatedTarget || relatedTarget.nodeName == "HTML"){
|
|
dropArea.style.display = 'none';
|
|
}
|
|
});
|
|
},
|
|
_createUploadHandler: function(){
|
|
var self = this,
|
|
handlerClass;
|
|
|
|
if(qq.UploadHandlerXhr.isSupported()){
|
|
handlerClass = 'UploadHandlerXhr';
|
|
} else {
|
|
handlerClass = 'UploadHandlerForm';
|
|
}
|
|
|
|
var handler = new qq[handlerClass]({
|
|
action: this._options.action,
|
|
onProgress: function(id, fileName, loaded, total){
|
|
// is only called for xhr upload
|
|
self._updateProgress(id, loaded, total);
|
|
},
|
|
onComplete: function(id, fileName, result){
|
|
self._filesInProgress--;
|
|
|
|
// mark completed
|
|
var item = self._getItemByFileId(id);
|
|
qq.remove(self._getElement(item, 'cancel'));
|
|
qq.remove(self._getElement(item, 'spinner'));
|
|
|
|
if (result.success){
|
|
qq.addClass(item, self._classes.success);
|
|
} else {
|
|
qq.addClass(item, self._classes.fail);
|
|
|
|
if (result.error){
|
|
self._options.showMessage(result.error);
|
|
}
|
|
}
|
|
|
|
self._options.onComplete(id, fileName, result);
|
|
}
|
|
});
|
|
|
|
return handler;
|
|
},
|
|
_onInputChange: function(input){
|
|
|
|
if (this._handler instanceof qq.UploadHandlerXhr){
|
|
|
|
this._uploadFileList(input.files);
|
|
|
|
} else {
|
|
|
|
if (this._validateFile(input)){
|
|
this._uploadFile(input);
|
|
}
|
|
|
|
}
|
|
|
|
this._button.reset();
|
|
},
|
|
_uploadFileList: function(files){
|
|
var valid = true;
|
|
|
|
var i = files.length;
|
|
while (i--){
|
|
if (!this._validateFile(files[i])){
|
|
valid = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (valid){
|
|
var i = files.length;
|
|
while (i--){ this._uploadFile(files[i]); }
|
|
}
|
|
},
|
|
_uploadFile: function(fileContainer){
|
|
var id = this._handler.add(fileContainer);
|
|
var name = this._handler.getName(id);
|
|
this._options.onSubmit(id, name);
|
|
this._addToList(id, name);
|
|
this._handler.upload(id, this._options.params);
|
|
},
|
|
_validateFile: function(file){
|
|
var name,size;
|
|
|
|
if (file.value){
|
|
// it is a file input
|
|
// get input value and remove path to normalize
|
|
name = file.value.replace(/.*(\/|\\)/, "");
|
|
} else {
|
|
// fix missing properties in Safari
|
|
name = file.fileName != null ? file.fileName : file.name;
|
|
size = file.fileSize != null ? file.fileSize : file.size;
|
|
}
|
|
|
|
if (! this._isAllowedExtension(name)){
|
|
this._error('typeError',name);
|
|
return false;
|
|
|
|
} else if (size === 0){
|
|
this._error('emptyError',name);
|
|
return false;
|
|
|
|
} else if (size && this._options.sizeLimit && size > this._options.sizeLimit){
|
|
this._error('sizeError',name);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
},
|
|
_addToList: function(id, fileName){
|
|
var item = qq.toElement(this._options.fileTemplate);
|
|
item.qqFileId = id;
|
|
|
|
var fileElement = this._getElement(item, 'file');
|
|
qq.setText(fileElement, this._formatFileName(fileName));
|
|
this._getElement(item, 'size').style.display = 'none';
|
|
|
|
this._getElement('list').appendChild(item);
|
|
|
|
this._filesInProgress++;
|
|
},
|
|
_updateProgress: function(id, loaded, total){
|
|
var item = this._getItemByFileId(id);
|
|
var size = this._getElement(item, 'size');
|
|
size.style.display = 'inline';
|
|
|
|
var text;
|
|
if (loaded != total){
|
|
text = Math.round(loaded / total * 100) + '% from ' + this._formatSize(total);
|
|
} else {
|
|
text = this._formatSize(total);
|
|
}
|
|
|
|
qq.setText(size, text);
|
|
},
|
|
_formatSize: function(bytes){
|
|
var i = -1;
|
|
do {
|
|
bytes = bytes / 1024;
|
|
i++;
|
|
} while (bytes > 99);
|
|
|
|
return Math.max(bytes, 0.1).toFixed(1) + ['kB', 'MB', 'GB', 'TB', 'PB', 'EB'][i];
|
|
},
|
|
_getItemByFileId: function(id){
|
|
var item = this._getElement('list').firstChild;
|
|
|
|
// there can't be text nodes in our dynamically created list
|
|
// because of that we can safely use nextSibling
|
|
while (item){
|
|
if (item.qqFileId == id){
|
|
return item;
|
|
}
|
|
|
|
item = item.nextSibling;
|
|
}
|
|
},
|
|
/**
|
|
* delegate click event for cancel link
|
|
**/
|
|
_bindCancelEvent: function(){
|
|
var self = this,
|
|
list = this._getElement('list');
|
|
|
|
qq.attach(list, 'click', function(e){
|
|
e = e || window.event;
|
|
var target = e.target || e.srcElement;
|
|
|
|
if (qq.hasClass(target, self._classes.cancel)){
|
|
qq.preventDefault(e);
|
|
|
|
var item = target.parentNode;
|
|
self._handler.cancel(item.qqFileId);
|
|
qq.remove(item);
|
|
}
|
|
});
|
|
|
|
}
|
|
};
|
|
|
|
qq.UploadDropZone = function(o){
|
|
this._options = {
|
|
element: null,
|
|
onEnter: function(e){},
|
|
onLeave: function(e){},
|
|
// is not fired when leaving element by hovering descendants
|
|
onLeaveNotDescendants: function(e){},
|
|
onDrop: function(e){}
|
|
};
|
|
qq.extend(this._options, o);
|
|
|
|
this._element = this._options.element;
|
|
|
|
this._disableDropOutside();
|
|
this._attachEvents();
|
|
};
|
|
|
|
qq.UploadDropZone.prototype = {
|
|
_disableDropOutside: function(e){
|
|
// run only once for all instances
|
|
if (!qq.UploadDropZone.dropOutsideDisabled ){
|
|
|
|
qq.attach(document, 'dragover', function(e){
|
|
e.dataTransfer.dropEffect = 'none';
|
|
e.preventDefault();
|
|
});
|
|
|
|
qq.UploadDropZone.dropOutsideDisabled = true;
|
|
}
|
|
},
|
|
_attachEvents: function(){
|
|
var self = this;
|
|
|
|
qq.attach(self._element, 'dragover', function(e){
|
|
if (!self._isValidFileDrag(e)) return;
|
|
|
|
var effect = e.dataTransfer.effectAllowed;
|
|
if (effect == 'move' || effect == 'linkMove'){
|
|
e.dataTransfer.dropEffect = 'move'; // for FF (only move allowed)
|
|
} else {
|
|
e.dataTransfer.dropEffect = 'copy'; // for Chrome
|
|
}
|
|
|
|
e.stopPropagation();
|
|
e.preventDefault();
|
|
});
|
|
|
|
qq.attach(self._element, 'dragenter', function(e){
|
|
if (!self._isValidFileDrag(e)) return;
|
|
|
|
self._options.onEnter(e);
|
|
});
|
|
|
|
qq.attach(self._element, 'dragleave', function(e){
|
|
if (!self._isValidFileDrag(e)) return;
|
|
|
|
self._options.onLeave(e);
|
|
|
|
var relatedTarget = document.elementFromPoint(e.clientX, e.clientY);
|
|
// do not fire when moving a mouse over a descendant
|
|
if (qq.contains(this, relatedTarget)) return;
|
|
|
|
self._options.onLeaveNotDescendants(e);
|
|
});
|
|
|
|
qq.attach(self._element, 'drop', function(e){
|
|
if (!self._isValidFileDrag(e)) return;
|
|
|
|
e.preventDefault();
|
|
self._options.onDrop(e);
|
|
});
|
|
},
|
|
_isValidFileDrag: function(e){
|
|
var dt = e.dataTransfer,
|
|
// do not check dt.types.contains in webkit, because it crashes safari 4
|
|
isWebkit = navigator.userAgent.indexOf("AppleWebKit") > -1;
|
|
|
|
// dt.effectAllowed is none in Safari 5
|
|
// dt.types.contains check is for firefox
|
|
return dt && dt.effectAllowed != 'none' &&
|
|
(dt.files || (!isWebkit && dt.types.contains && dt.types.contains('Files')));
|
|
|
|
}
|
|
};
|
|
|
|
qq.UploadButton = function(o){
|
|
this._options = {
|
|
element: null,
|
|
// if set to true adds multiple attribute to file input
|
|
multiple: false,
|
|
// name attribute of file input
|
|
name: 'file',
|
|
onChange: function(input){},
|
|
hoverClass: 'qq-upload-button-hover',
|
|
focusClass: 'qq-upload-button-focus'
|
|
};
|
|
|
|
qq.extend(this._options, o);
|
|
|
|
this._element = this._options.element;
|
|
|
|
// make button suitable container for input
|
|
qq.css(this._element, {
|
|
position: 'relative',
|
|
overflow: 'hidden',
|
|
// Make sure browse button is in the right side
|
|
// in Internet Explorer
|
|
direction: 'ltr'
|
|
});
|
|
|
|
this._input = this._createInput();
|
|
};
|
|
|
|
qq.UploadButton.prototype = {
|
|
/* returns file input element */
|
|
getInput: function(){
|
|
return this._input;
|
|
},
|
|
/* cleans/recreates the file input */
|
|
reset: function(){
|
|
if (this._input.parentNode){
|
|
qq.remove(this._input);
|
|
}
|
|
|
|
qq.removeClass(this._element, this._options.focusClass);
|
|
this._input = this._createInput();
|
|
},
|
|
_createInput: function(){
|
|
var input = document.createElement("input");
|
|
|
|
if (this._options.multiple){
|
|
input.setAttribute("multiple", "multiple");
|
|
}
|
|
|
|
input.setAttribute("type", "file");
|
|
input.setAttribute("name", this._options.name);
|
|
|
|
qq.css(input, {
|
|
position: 'absolute',
|
|
// in Opera only 'browse' button
|
|
// is clickable and it is located at
|
|
// the right side of the input
|
|
right: 0,
|
|
top: 0,
|
|
fontFamily: 'Arial',
|
|
// when button is big it becomes visible in IE8 on SOME PCs
|
|
// probably related to http://social.msdn.microsoft.com/forums/en-US/iewebdevelopment/thread/29d0b0e7-4326-4b3e-823c-51420d4cf253
|
|
// 4 persons reported this, the max values that worked for them were 243, 236, 236, 118
|
|
fontSize: '118px',
|
|
margin: 0,
|
|
padding: 0,
|
|
cursor: 'pointer',
|
|
opacity: 0
|
|
});
|
|
|
|
this._element.appendChild(input);
|
|
|
|
var self = this;
|
|
qq.attach(input, 'change', function(){
|
|
self._options.onChange(input);
|
|
});
|
|
|
|
qq.attach(input, 'mouseover', function(){
|
|
qq.addClass(self._element, self._options.hoverClass);
|
|
});
|
|
qq.attach(input, 'mouseout', function(){
|
|
qq.removeClass(self._element, self._options.hoverClass);
|
|
});
|
|
qq.attach(input, 'focus', function(){
|
|
qq.addClass(self._element, self._options.focusClass);
|
|
});
|
|
qq.attach(input, 'blur', function(){
|
|
qq.removeClass(self._element, self._options.focusClass);
|
|
});
|
|
|
|
// IE and Opera, unfortunately have 2 tab stops on file input
|
|
// which is unacceptable in our case, disable keyboard access
|
|
if (window.attachEvent){
|
|
// it is IE or Opera
|
|
input.setAttribute('tabIndex', "-1");
|
|
}
|
|
|
|
return input;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Class for uploading files using form and iframe
|
|
*/
|
|
qq.UploadHandlerForm = function(o){
|
|
this._options = {
|
|
// URL of the server-side upload script,
|
|
// should be on the same domain to get response
|
|
action: '/upload',
|
|
// fires for each file, when iframe finishes loading
|
|
onComplete: function(id, fileName, response){}
|
|
};
|
|
qq.extend(this._options, o);
|
|
|
|
this._inputs = {};
|
|
};
|
|
qq.UploadHandlerForm.prototype = {
|
|
/**
|
|
* Adds file input to the queue
|
|
* Returns id to use with upload, cancel
|
|
**/
|
|
add: function(fileInput){
|
|
fileInput.setAttribute('name', 'qqfile');
|
|
var id = 'qq-upload-handler-iframe' + qq.getUniqueId();
|
|
|
|
this._inputs[id] = fileInput;
|
|
|
|
// remove file input from DOM
|
|
if (fileInput.parentNode){
|
|
qq.remove(fileInput);
|
|
}
|
|
|
|
return id;
|
|
},
|
|
/**
|
|
* Sends the file identified by id and additional query params to the server
|
|
* @param {Object} params name-value string pairs
|
|
*/
|
|
upload: function(id, params){
|
|
var input = this._inputs[id];
|
|
|
|
if (!input){
|
|
throw new Error('file with passed id was not added, or already uploaded or cancelled');
|
|
}
|
|
|
|
var fileName = this.getName(id);
|
|
|
|
var iframe = this._createIframe(id);
|
|
var form = this._createForm(iframe, params);
|
|
form.appendChild(input);
|
|
|
|
var self = this;
|
|
this._attachLoadEvent(iframe, function(){
|
|
self._options.onComplete(id, fileName, self._getIframeContentJSON(iframe));
|
|
|
|
delete self._inputs[id];
|
|
// timeout added to fix busy state in FF3.6
|
|
setTimeout(function(){
|
|
qq.remove(iframe);
|
|
}, 1);
|
|
});
|
|
|
|
form.submit();
|
|
qq.remove(form);
|
|
|
|
return id;
|
|
},
|
|
cancel: function(id){
|
|
if (id in this._inputs){
|
|
delete this._inputs[id];
|
|
}
|
|
|
|
var iframe = document.getElementById(id);
|
|
if (iframe){
|
|
// to cancel request set src to something else
|
|
// we use src="javascript:false;" because it doesn't
|
|
// trigger ie6 prompt on https
|
|
iframe.setAttribute('src', 'javascript:false;');
|
|
|
|
qq.remove(iframe);
|
|
}
|
|
},
|
|
getName: function(id){
|
|
// get input value and remove path to normalize
|
|
return this._inputs[id].value.replace(/.*(\/|\\)/, "");
|
|
},
|
|
_attachLoadEvent: function(iframe, callback){
|
|
qq.attach(iframe, 'load', function(){
|
|
// when we remove iframe from dom
|
|
// the request stops, but in IE load
|
|
// event fires
|
|
if (!iframe.parentNode){
|
|
return;
|
|
}
|
|
|
|
// fixing Opera 10.53
|
|
if (iframe.contentDocument &&
|
|
iframe.contentDocument.body &&
|
|
iframe.contentDocument.body.innerHTML == "false"){
|
|
// In Opera event is fired second time
|
|
// when body.innerHTML changed from false
|
|
// to server response approx. after 1 sec
|
|
// when we upload file with iframe
|
|
return;
|
|
}
|
|
|
|
callback();
|
|
});
|
|
},
|
|
/**
|
|
* Returns json object received by iframe from server.
|
|
*/
|
|
_getIframeContentJSON: function(iframe){
|
|
// iframe.contentWindow.document - for IE<7
|
|
var doc = iframe.contentDocument ? iframe.contentDocument: iframe.contentWindow.document,
|
|
response;
|
|
|
|
try{
|
|
response = eval("(" + doc.body.innerHTML + ")");
|
|
} catch(err){
|
|
response = {};
|
|
}
|
|
|
|
return response;
|
|
},
|
|
/**
|
|
* Creates iframe with unique name
|
|
*/
|
|
_createIframe: function(id){
|
|
// We can't use following code as the name attribute
|
|
// won't be properly registered in IE6, and new window
|
|
// on form submit will open
|
|
// var iframe = document.createElement('iframe');
|
|
// iframe.setAttribute('name', id);
|
|
|
|
var iframe = qq.toElement('<iframe src="javascript:false;" name="' + id + '" />');
|
|
// src="javascript:false;" removes ie6 prompt on https
|
|
|
|
iframe.setAttribute('id', id);
|
|
|
|
iframe.style.display = 'none';
|
|
document.body.appendChild(iframe);
|
|
|
|
return iframe;
|
|
},
|
|
/**
|
|
* Creates form, that will be submitted to iframe
|
|
*/
|
|
_createForm: function(iframe, params){
|
|
// We can't use the following code in IE6
|
|
// var form = document.createElement('form');
|
|
// form.setAttribute('method', 'post');
|
|
// form.setAttribute('enctype', 'multipart/form-data');
|
|
// Because in this case file won't be attached to request
|
|
var form = qq.toElement('<form method="post" enctype="multipart/form-data"></form>');
|
|
|
|
var queryString = '?' + qq.obj2url(params);
|
|
|
|
form.setAttribute('action', this._options.action + queryString);
|
|
form.setAttribute('target', iframe.name);
|
|
form.style.display = 'none';
|
|
document.body.appendChild(form);
|
|
|
|
return form;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Class for uploading files using xhr
|
|
*/
|
|
qq.UploadHandlerXhr = function(o){
|
|
this._options = {
|
|
// url of the server-side upload script,
|
|
// should be on the same domain
|
|
action: '/upload',
|
|
onProgress: function(id, fileName, loaded, total){},
|
|
onComplete: function(id, fileName, response){}
|
|
};
|
|
qq.extend(this._options, o);
|
|
|
|
this._files = [];
|
|
this._xhrs = [];
|
|
};
|
|
|
|
// static method
|
|
qq.UploadHandlerXhr.isSupported = function(){
|
|
var input = document.createElement('input');
|
|
input.type = 'file';
|
|
|
|
return (
|
|
'multiple' in input &&
|
|
typeof File != "undefined" &&
|
|
typeof (new XMLHttpRequest()).upload != "undefined" );
|
|
};
|
|
|
|
qq.UploadHandlerXhr.prototype = {
|
|
/**
|
|
* Adds file to the queue
|
|
* Returns id to use with upload, cancel
|
|
**/
|
|
add: function(file){
|
|
return this._files.push(file) - 1;
|
|
},
|
|
/**
|
|
* Sends the file identified by id and additional query params to the server
|
|
* @param {Object} params name-value string pairs
|
|
*/
|
|
upload: function(id, params){
|
|
var file = this._files[id],
|
|
name = this.getName(id),
|
|
size = this.getSize(id);
|
|
|
|
if (!file){
|
|
throw new Error('file with passed id was not added, or already uploaded or cancelled');
|
|
}
|
|
|
|
var xhr = this._xhrs[id] = new XMLHttpRequest();
|
|
var self = this;
|
|
|
|
xhr.upload.onprogress = function(e){
|
|
if (e.lengthComputable){
|
|
self._options.onProgress(id, name, e.loaded, e.total);
|
|
}
|
|
};
|
|
|
|
xhr.onreadystatechange = function(){
|
|
// the request was aborted/cancelled
|
|
if (!self._files[id]){
|
|
return;
|
|
}
|
|
|
|
if (xhr.readyState == 4){
|
|
|
|
self._options.onProgress(id, name, size, size);
|
|
|
|
if (xhr.status == 200){
|
|
var response;
|
|
|
|
try {
|
|
response = eval("(" + xhr.responseText + ")");
|
|
} catch(err){
|
|
response = {};
|
|
}
|
|
|
|
self._options.onComplete(id, name, response);
|
|
|
|
} else {
|
|
self._options.onComplete(id, name, {});
|
|
}
|
|
|
|
self._files[id] = null;
|
|
self._xhrs[id] = null;
|
|
}
|
|
};
|
|
|
|
// build query string
|
|
var queryString = '?qqfile=' + encodeURIComponent(name) + '&' + qq.obj2url(params);
|
|
|
|
xhr.open("POST", this._options.action + queryString, true);
|
|
xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
|
|
xhr.setRequestHeader("X-File-Name", encodeURIComponent(name));
|
|
xhr.setRequestHeader("Content-Type", "application/octet-stream");
|
|
xhr.send(file);
|
|
|
|
},
|
|
cancel: function(id){
|
|
this._files[id] = null;
|
|
|
|
if (this._xhrs[id]){
|
|
this._xhrs[id].abort();
|
|
this._xhrs[id] = null;
|
|
}
|
|
},
|
|
getName: function(id){
|
|
// fix missing name in Safari 4
|
|
var file = this._files[id];
|
|
return file.fileName != null ? file.fileName : file.name;
|
|
},
|
|
getSize: function(id){
|
|
// fix missing size in Safari 4
|
|
var file = this._files[id];
|
|
return file.fileSize != null ? file.fileSize : file.size;
|
|
}
|
|
};
|
|
|
|
//
|
|
// Helper functions
|
|
//
|
|
|
|
var qq = qq || {};
|
|
|
|
//
|
|
// Useful generic functions
|
|
|
|
/**
|
|
* Adds all missing properties from obj2 to obj1
|
|
*/
|
|
qq.extend = function(obj1, obj2){
|
|
for (var prop in obj2){
|
|
obj1[prop] = obj2[prop];
|
|
}
|
|
};
|
|
|
|
/**
|
|
* @return {Number} unique id
|
|
*/
|
|
qq.getUniqueId = (function(){
|
|
var id = 0;
|
|
return function(){
|
|
return id++;
|
|
};
|
|
})();
|
|
|
|
//
|
|
// Events
|
|
|
|
qq.attach = function(element, type, fn){
|
|
if (element.addEventListener){
|
|
element.addEventListener(type, fn, false);
|
|
} else if (element.attachEvent){
|
|
element.attachEvent('on' + type, fn);
|
|
}
|
|
};
|
|
qq.detach = function(element, type, fn){
|
|
if (element.removeEventListener){
|
|
element.removeEventListener(type, fn, false);
|
|
} else if (element.attachEvent){
|
|
element.detachEvent('on' + type, fn);
|
|
}
|
|
};
|
|
|
|
qq.preventDefault = function(e){
|
|
if (e.preventDefault){
|
|
e.preventDefault();
|
|
} else{
|
|
e.returnValue = false;
|
|
}
|
|
};
|
|
//
|
|
// Node manipulations
|
|
|
|
/**
|
|
* Insert node a before node b.
|
|
*/
|
|
qq.insertBefore = function(a, b){
|
|
b.parentNode.insertBefore(a, b);
|
|
};
|
|
qq.remove = function(element){
|
|
element.parentNode.removeChild(element);
|
|
};
|
|
|
|
qq.contains = function(parent, descendant){
|
|
// compareposition returns false in this case
|
|
if (parent == descendant) return true;
|
|
|
|
if (parent.contains){
|
|
return parent.contains(descendant);
|
|
} else {
|
|
return !!(descendant.compareDocumentPosition(parent) & 8);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Creates and returns element from html string
|
|
* Uses innerHTML to create an element
|
|
*/
|
|
qq.toElement = (function(){
|
|
var div = document.createElement('div');
|
|
return function(html){
|
|
div.innerHTML = html;
|
|
var element = div.firstChild;
|
|
div.removeChild(element);
|
|
return element;
|
|
};
|
|
})();
|
|
|
|
//
|
|
// Node properties and attributes
|
|
|
|
/**
|
|
* Sets styles for an element.
|
|
* Fixes opacity in IE6-8.
|
|
*/
|
|
qq.css = function(element, styles){
|
|
if (styles.opacity != null){
|
|
if (typeof element.style.opacity != 'string' && typeof(element.filters) != 'undefined'){
|
|
styles.filter = 'alpha(opacity=' + Math.round(100 * styles.opacity) + ')';
|
|
}
|
|
}
|
|
qq.extend(element.style, styles);
|
|
};
|
|
qq.hasClass = function(element, name){
|
|
var re = new RegExp('(^| )' + name + '( |$)');
|
|
return re.test(element.className);
|
|
};
|
|
qq.addClass = function(element, name){
|
|
if (!qq.hasClass(element, name)){
|
|
element.className += ' ' + name;
|
|
}
|
|
};
|
|
qq.removeClass = function(element, name){
|
|
var re = new RegExp('(^| )' + name + '( |$)');
|
|
element.className = element.className.replace(re, ' ').replace(/^\s+|\s+$/g, "");
|
|
};
|
|
qq.setText = function(element, text){
|
|
element.innerText = text;
|
|
element.textContent = text;
|
|
};
|
|
|
|
//
|
|
// Selecting elements
|
|
|
|
qq.children = function(element){
|
|
var children = [],
|
|
child = element.firstChild;
|
|
|
|
while (child){
|
|
if (child.nodeType == 1){
|
|
children.push(child);
|
|
}
|
|
child = child.nextSibling;
|
|
}
|
|
|
|
return children;
|
|
};
|
|
|
|
qq.getByClass = function(element, className){
|
|
if (element.querySelectorAll){
|
|
return element.querySelectorAll('.' + className);
|
|
}
|
|
|
|
var result = [];
|
|
var candidates = element.getElementsByTagName("*");
|
|
var len = candidates.length;
|
|
|
|
for (var i = 0; i < len; i++){
|
|
if (qq.hasClass(candidates[i], className)){
|
|
result.push(candidates[i]);
|
|
}
|
|
}
|
|
return result;
|
|
};
|
|
|
|
/**
|
|
* obj2url() takes a json-object as argument and generates
|
|
* a querystring. pretty much like jQuery.param()
|
|
*
|
|
* @param Object JSON-Object
|
|
* @param String current querystring-part
|
|
* @return String encoded querystring
|
|
*/
|
|
qq.obj2url = function(obj, temp){
|
|
var uristrings = [],
|
|
add = function(nextObj, i){
|
|
|
|
var nextTemp = temp
|
|
? (/\[\]$/.test(temp)) // prevent double-encoding
|
|
? temp
|
|
: temp+'['+i+']'
|
|
: i;
|
|
|
|
uristrings.push(typeof nextObj === 'object'
|
|
? qq.obj2url(nextObj, nextTemp)
|
|
: (Object.prototype.toString.call(nextObj) === '[object Function]')
|
|
? encodeURIComponent(nextTemp) + '=' + encodeURIComponent(nextObj())
|
|
: encodeURIComponent(nextTemp) + '=' + encodeURIComponent(nextObj));
|
|
};
|
|
|
|
if (Object.prototype.toString.call(obj) === '[object Array]'){
|
|
// we wont use a for-in-loop on an array (performance)
|
|
for (var i = 0, len = obj.length; i < len; ++i){
|
|
add(obj[i], i);
|
|
}
|
|
|
|
} else if ((obj !== undefined) &&
|
|
(obj !== null) &&
|
|
(typeof obj === "object")){
|
|
|
|
// for anything else but a scalar, we will use for-in-loop
|
|
for (var i in obj){
|
|
add(obj[i], i);
|
|
}
|
|
} else {
|
|
uristrings.push(encodeURIComponent(temp) + '=' + encodeURIComponent(obj));
|
|
}
|
|
|
|
return uristrings.join('&').replace(/%20/g, '+');
|
|
};
|
|
|