mirror of
https://github.com/friendica/friendica
synced 2024-12-23 18:40:16 +00:00
703 lines
26 KiB
JavaScript
703 lines
26 KiB
JavaScript
/**
|
|
* AJAX Upload ( http://valums.com/ajax-upload/ )
|
|
* Copyright (c) Andris Valums
|
|
* Licensed under the MIT license ( http://valums.com/mit-license/ )
|
|
* Thanks to Gary Haran, David Mark, Corey Burns and others for contributions.
|
|
*/
|
|
|
|
(function () {
|
|
/* global window */
|
|
/* jslint browser: true, devel: true, undef: true, nomen: true, bitwise: true, regexp: true, newcap: true, immed: true */
|
|
|
|
/**
|
|
* Wrapper for FireBug's console.log
|
|
*/
|
|
function log(){
|
|
if (typeof(console) != 'undefined' && typeof(console.log) == 'function'){
|
|
Array.prototype.unshift.call(arguments, '[Ajax Upload]');
|
|
console.log( Array.prototype.join.call(arguments, ' '));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Attaches event to a dom element.
|
|
* @param {Element} el
|
|
* @param type event name
|
|
* @param fn callback This refers to the passed element
|
|
*/
|
|
function addEvent(el, type, fn){
|
|
if (el.addEventListener) {
|
|
el.addEventListener(type, fn, false);
|
|
} else if (el.attachEvent) {
|
|
el.attachEvent('on' + type, function(){
|
|
fn.call(el);
|
|
});
|
|
} else {
|
|
throw new Error('not supported or DOM not loaded');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Attaches resize event to a window, limiting
|
|
* number of event fired. Fires only when encounteres
|
|
* delay of 100 after series of events.
|
|
*
|
|
* Some browsers fire event multiple times when resizing
|
|
* http://www.quirksmode.org/dom/events/resize.html
|
|
*
|
|
* @param fn callback This refers to the passed element
|
|
*/
|
|
function addResizeEvent(fn){
|
|
var timeout;
|
|
|
|
addEvent(window, 'resize', function(){
|
|
if (timeout){
|
|
clearTimeout(timeout);
|
|
}
|
|
timeout = setTimeout(fn, 100);
|
|
});
|
|
}
|
|
|
|
// Get offset adding all offsets, slow fall-back method
|
|
var getOffsetSlow = function(el){
|
|
var top = 0, left = 0;
|
|
do {
|
|
top += el.offsetTop || 0;
|
|
left += el.offsetLeft || 0;
|
|
el = el.offsetParent;
|
|
} while (el);
|
|
|
|
return {
|
|
left: left,
|
|
top: top
|
|
};
|
|
};
|
|
|
|
|
|
// Needs more testing, will be rewriten for next version
|
|
// getOffset function copied from jQuery lib (http://jquery.com/)
|
|
if (document.documentElement.getBoundingClientRect){
|
|
// Get Offset using getBoundingClientRect
|
|
// http://ejohn.org/blog/getboundingclientrect-is-awesome/
|
|
var getOffset = function(el){
|
|
var box = el.getBoundingClientRect();
|
|
var doc = el.ownerDocument;
|
|
var body = doc.body;
|
|
var docElem = doc.documentElement; // for ie
|
|
var clientTop = docElem.clientTop || body.clientTop || 0;
|
|
var clientLeft = docElem.clientLeft || body.clientLeft || 0;
|
|
|
|
// In Internet Explorer 7 getBoundingClientRect property is treated as physical,
|
|
// while others are logical. Make all logical, like in IE8.
|
|
var zoom = 1;
|
|
if (body.getBoundingClientRect) {
|
|
var bound = body.getBoundingClientRect();
|
|
zoom = (bound.right - bound.left) / body.clientWidth;
|
|
}
|
|
|
|
// some CSS layouts gives 0 width and/or bounding boxes
|
|
// in this case we fall back to the slow method
|
|
if (zoom == 0 || body.clientWidth == 0)
|
|
return getOffsetSlow(el);
|
|
|
|
if (zoom > 1) {
|
|
clientTop = 0;
|
|
clientLeft = 0;
|
|
}
|
|
|
|
var top = box.top / zoom + (window.pageYOffset || docElem && docElem.scrollTop / zoom || body.scrollTop / zoom) - clientTop, left = box.left / zoom + (window.pageXOffset || docElem && docElem.scrollLeft / zoom || body.scrollLeft / zoom) - clientLeft;
|
|
|
|
return {
|
|
top: top,
|
|
left: left
|
|
};
|
|
};
|
|
} else {
|
|
var getOffset = getOffsetSlow;
|
|
}
|
|
|
|
/**
|
|
* Returns left, top, right and bottom properties describing the border-box,
|
|
* in pixels, with the top-left relative to the body
|
|
* @param {Element} el
|
|
* @return {Object} Contains left, top, right,bottom
|
|
*/
|
|
function getBox(el){
|
|
var left, right, top, bottom;
|
|
var offset = getOffset(el);
|
|
left = offset.left;
|
|
top = offset.top;
|
|
|
|
right = left + el.offsetWidth;
|
|
bottom = top + el.offsetHeight;
|
|
|
|
return {
|
|
left: left,
|
|
right: right,
|
|
top: top,
|
|
bottom: bottom
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Helper that takes object literal
|
|
* and add all properties to element.style
|
|
* @param {Element} el
|
|
* @param {Object} styles
|
|
*/
|
|
function addStyles(el, styles){
|
|
for (var name in styles) {
|
|
if (styles.hasOwnProperty(name)) {
|
|
el.style[name] = styles[name];
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Function places an absolutely positioned
|
|
* element on top of the specified element
|
|
* copying position and dimentions.
|
|
* @param {Element} from
|
|
* @param {Element} to
|
|
*/
|
|
function copyLayout(from, to){
|
|
var box = getBox(from);
|
|
|
|
addStyles(to, {
|
|
position: 'absolute',
|
|
left : box.left + 'px',
|
|
top : box.top + 'px',
|
|
width : from.offsetWidth + 'px',
|
|
height : from.offsetHeight + 'px'
|
|
});
|
|
to.title = from.title;
|
|
|
|
}
|
|
|
|
/**
|
|
* Creates and returns element from html chunk
|
|
* Uses innerHTML to create an element
|
|
*/
|
|
var toElement = (function(){
|
|
var div = document.createElement('div');
|
|
return function(html){
|
|
div.innerHTML = html;
|
|
var el = div.firstChild;
|
|
return div.removeChild(el);
|
|
};
|
|
})();
|
|
|
|
/**
|
|
* Function generates unique id
|
|
* @return unique id
|
|
*/
|
|
var getUID = (function(){
|
|
var id = 0;
|
|
return function(){
|
|
return 'ValumsAjaxUpload' + id++;
|
|
};
|
|
})();
|
|
|
|
/**
|
|
* Get file name from path
|
|
* @param {String} file path to file
|
|
* @return filename
|
|
*/
|
|
function fileFromPath(file){
|
|
return file.replace(/.*(\/|\\)/, "");
|
|
}
|
|
|
|
/**
|
|
* Get file extension lowercase
|
|
* @param {String} file name
|
|
* @return file extenstion
|
|
*/
|
|
function getExt(file){
|
|
return (-1 !== file.indexOf('.')) ? file.replace(/.*[.]/, '') : '';
|
|
}
|
|
|
|
function hasClass(el, name){
|
|
var re = new RegExp('\\b' + name + '\\b');
|
|
return re.test(el.className);
|
|
}
|
|
function addClass(el, name){
|
|
if ( ! hasClass(el, name)){
|
|
el.className += ' ' + name;
|
|
}
|
|
}
|
|
function removeClass(el, name){
|
|
var re = new RegExp('\\b' + name + '\\b');
|
|
el.className = el.className.replace(re, '');
|
|
}
|
|
|
|
function removeNode(el){
|
|
el.parentNode.removeChild(el);
|
|
}
|
|
|
|
/**
|
|
* Easy styling and uploading
|
|
* @constructor
|
|
* @param button An element you want convert to
|
|
* upload button. Tested dimentions up to 500x500px
|
|
* @param {Object} options See defaults below.
|
|
*/
|
|
window.AjaxUpload = function(button, options){
|
|
this._settings = {
|
|
// Location of the server-side upload script
|
|
action: 'upload.php',
|
|
// File upload name
|
|
name: 'userfile',
|
|
// Additional data to send
|
|
data: {},
|
|
// Submit file as soon as it's selected
|
|
autoSubmit: true,
|
|
// The type of data that you're expecting back from the server.
|
|
// html and xml are detected automatically.
|
|
// Only useful when you are using json data as a response.
|
|
// Set to "json" in that case.
|
|
responseType: false,
|
|
// Class applied to button when mouse is hovered
|
|
hoverClass: 'hover',
|
|
// Class applied to button when button is focused
|
|
focusClass: 'focus',
|
|
// Class applied to button when AU is disabled
|
|
disabledClass: 'disabled',
|
|
// When user selects a file, useful with autoSubmit disabled
|
|
// You can return false to cancel upload
|
|
onChange: function(file, extension){
|
|
},
|
|
// Callback to fire before file is uploaded
|
|
// You can return false to cancel upload
|
|
onSubmit: function(file, extension){
|
|
},
|
|
// Fired when file upload is completed
|
|
// WARNING! DO NOT USE "FALSE" STRING AS A RESPONSE!
|
|
onComplete: function(file, response){
|
|
}
|
|
};
|
|
|
|
// Merge the users options with our defaults
|
|
for (var i in options) {
|
|
if (options.hasOwnProperty(i)){
|
|
this._settings[i] = options[i];
|
|
}
|
|
}
|
|
|
|
// button isn't necessary a dom element
|
|
if (button.jquery){
|
|
// jQuery object was passed
|
|
button = button[0];
|
|
} else if (typeof button == "string") {
|
|
if (/^#.*/.test(button)){
|
|
// If jQuery user passes #elementId don't break it
|
|
button = button.slice(1);
|
|
}
|
|
|
|
button = document.getElementById(button);
|
|
}
|
|
|
|
if ( ! button || button.nodeType !== 1){
|
|
throw new Error("Please make sure that you're passing a valid element");
|
|
}
|
|
|
|
if ( button.nodeName.toUpperCase() == 'A'){
|
|
// disable link
|
|
addEvent(button, 'click', function(e){
|
|
if (e && e.preventDefault){
|
|
e.preventDefault();
|
|
} else if (window.event){
|
|
window.event.returnValue = false;
|
|
}
|
|
});
|
|
}
|
|
|
|
// DOM element
|
|
this._button = button;
|
|
// DOM element
|
|
this._input = null;
|
|
// If disabled clicking on button won't do anything
|
|
this._disabled = false;
|
|
|
|
// if the button was disabled before refresh if will remain
|
|
// disabled in FireFox, let's fix it
|
|
this.enable();
|
|
|
|
this._rerouteClicks();
|
|
};
|
|
|
|
// assigning methods to our class
|
|
AjaxUpload.prototype = {
|
|
setData: function(data){
|
|
this._settings.data = data;
|
|
},
|
|
disable: function(){
|
|
addClass(this._button, this._settings.disabledClass);
|
|
this._disabled = true;
|
|
|
|
var nodeName = this._button.nodeName.toUpperCase();
|
|
if (nodeName == 'INPUT' || nodeName == 'BUTTON'){
|
|
this._button.setAttribute('disabled', 'disabled');
|
|
}
|
|
|
|
// hide input
|
|
if (this._input){
|
|
// We use visibility instead of display to fix problem with Safari 4
|
|
// The problem is that the value of input doesn't change if it
|
|
// has display none when user selects a file
|
|
this._input.parentNode.style.visibility = 'hidden';
|
|
}
|
|
},
|
|
enable: function(){
|
|
removeClass(this._button, this._settings.disabledClass);
|
|
this._button.removeAttribute('disabled');
|
|
this._disabled = false;
|
|
|
|
},
|
|
/**
|
|
* Creates invisible file input
|
|
* that will hover above the button
|
|
* <div><input type='file' /></div>
|
|
*/
|
|
_createInput: function(){
|
|
var self = this;
|
|
|
|
var input = document.createElement("input");
|
|
input.setAttribute('type', 'file');
|
|
input.setAttribute('name', this._settings.name);
|
|
|
|
addStyles(input, {
|
|
'position' : 'absolute',
|
|
// in Opera only 'browse' button
|
|
// is clickable and it is located at
|
|
// the right side of the input
|
|
'right' : 0,
|
|
'margin' : 0,
|
|
'padding' : 0,
|
|
'fontSize' : '480px',
|
|
// in Firefox if font-family is set to
|
|
// 'inherit' the input doesn't work
|
|
'fontFamily' : 'sans-serif',
|
|
'cursor' : 'pointer'
|
|
});
|
|
|
|
var div = document.createElement("div");
|
|
addStyles(div, {
|
|
'display' : 'block',
|
|
'position' : 'absolute',
|
|
'overflow' : 'hidden',
|
|
'margin' : 0,
|
|
'padding' : 0,
|
|
'opacity' : 0,
|
|
// Make sure browse button is in the right side
|
|
// in Internet Explorer
|
|
'direction' : 'ltr',
|
|
//Max zIndex supported by Opera 9.0-9.2
|
|
'zIndex': 2147483583,
|
|
'cursor' : 'pointer'
|
|
|
|
});
|
|
|
|
// Make sure that element opacity exists.
|
|
// Otherwise use IE filter
|
|
if ( div.style.opacity !== "0") {
|
|
if (typeof(div.filters) == 'undefined'){
|
|
throw new Error('Opacity not supported by the browser');
|
|
}
|
|
div.style.filter = "alpha(opacity=0)";
|
|
}
|
|
|
|
addEvent(input, 'change', function(){
|
|
|
|
if ( ! input || input.value === ''){
|
|
return;
|
|
}
|
|
|
|
// Get filename from input, required
|
|
// as some browsers have path instead of it
|
|
var file = fileFromPath(input.value);
|
|
|
|
if (false === self._settings.onChange.call(self, file, getExt(file))){
|
|
self._clearInput();
|
|
return;
|
|
}
|
|
|
|
// Submit form when value is changed
|
|
if (self._settings.autoSubmit) {
|
|
self.submit();
|
|
}
|
|
});
|
|
|
|
addEvent(input, 'mouseover', function(){
|
|
addClass(self._button, self._settings.hoverClass);
|
|
});
|
|
|
|
addEvent(input, 'mouseout', function(){
|
|
removeClass(self._button, self._settings.hoverClass);
|
|
removeClass(self._button, self._settings.focusClass);
|
|
|
|
// We use visibility instead of display to fix problem with Safari 4
|
|
// The problem is that the value of input doesn't change if it
|
|
// has display none when user selects a file
|
|
input.parentNode.style.visibility = 'hidden';
|
|
|
|
});
|
|
|
|
addEvent(input, 'focus', function(){
|
|
addClass(self._button, self._settings.focusClass);
|
|
});
|
|
|
|
addEvent(input, 'blur', function(){
|
|
removeClass(self._button, self._settings.focusClass);
|
|
});
|
|
|
|
div.appendChild(input);
|
|
document.body.appendChild(div);
|
|
|
|
this._input = input;
|
|
},
|
|
_clearInput : function(){
|
|
if (!this._input){
|
|
return;
|
|
}
|
|
|
|
// this._input.value = ''; Doesn't work in IE6
|
|
removeNode(this._input.parentNode);
|
|
this._input = null;
|
|
this._createInput();
|
|
|
|
removeClass(this._button, this._settings.hoverClass);
|
|
removeClass(this._button, this._settings.focusClass);
|
|
},
|
|
/**
|
|
* Function makes sure that when user clicks upload button,
|
|
* the this._input is clicked instead
|
|
*/
|
|
_rerouteClicks: function(){
|
|
var self = this;
|
|
|
|
// IE will later display 'access denied' error
|
|
// if you use using self._input.click()
|
|
// other browsers just ignore click()
|
|
|
|
addEvent(self._button, 'mouseover', function(){
|
|
if (self._disabled){
|
|
return;
|
|
}
|
|
|
|
if ( ! self._input){
|
|
self._createInput();
|
|
}
|
|
|
|
var div = self._input.parentNode;
|
|
copyLayout(self._button, div);
|
|
div.style.visibility = 'visible';
|
|
|
|
});
|
|
|
|
|
|
// commented because we now hide input on mouseleave
|
|
/**
|
|
* When the window is resized the elements
|
|
* can be misaligned if button position depends
|
|
* on window size
|
|
*/
|
|
//addResizeEvent(function(){
|
|
// if (self._input){
|
|
// copyLayout(self._button, self._input.parentNode);
|
|
// }
|
|
//});
|
|
|
|
},
|
|
/**
|
|
* Creates iframe with unique name
|
|
* @return {Element} iframe
|
|
*/
|
|
_createIframe: function(){
|
|
// We can't use getTime, because it sometimes return
|
|
// same value in safari :(
|
|
var id = getUID();
|
|
|
|
// 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 = toElement('<iframe src="javascript:false;" name="' + id + '" />');
|
|
// src="javascript:false; was added
|
|
// because it possibly removes ie6 prompt
|
|
// "This page contains both secure and nonsecure items"
|
|
// Anyway, it doesn't do any harm.
|
|
iframe.setAttribute('id', id);
|
|
|
|
iframe.style.display = 'none';
|
|
document.body.appendChild(iframe);
|
|
|
|
return iframe;
|
|
},
|
|
/**
|
|
* Creates form, that will be submitted to iframe
|
|
* @param {Element} iframe Where to submit
|
|
* @return {Element} form
|
|
*/
|
|
_createForm: function(iframe){
|
|
var settings = this._settings;
|
|
|
|
// 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 = toElement('<form method="post" enctype="multipart/form-data"></form>');
|
|
|
|
form.setAttribute('action', settings.action);
|
|
form.setAttribute('target', iframe.name);
|
|
form.style.display = 'none';
|
|
document.body.appendChild(form);
|
|
|
|
// Create hidden input element for each data key
|
|
for (var prop in settings.data) {
|
|
if (settings.data.hasOwnProperty(prop)){
|
|
var el = document.createElement("input");
|
|
el.setAttribute('type', 'hidden');
|
|
el.setAttribute('name', prop);
|
|
el.setAttribute('value', settings.data[prop]);
|
|
form.appendChild(el);
|
|
}
|
|
}
|
|
return form;
|
|
},
|
|
/**
|
|
* Gets response from iframe and fires onComplete event when ready
|
|
* @param iframe
|
|
* @param file Filename to use in onComplete callback
|
|
*/
|
|
_getResponse : function(iframe, file){
|
|
// getting response
|
|
var toDeleteFlag = false, self = this, settings = this._settings;
|
|
|
|
addEvent(iframe, 'load', function(){
|
|
|
|
if (// For Safari
|
|
iframe.src == "javascript:'%3Chtml%3E%3C/html%3E';" ||
|
|
// For FF, IE
|
|
iframe.src == "javascript:'<html></html>';"){
|
|
// First time around, do not delete.
|
|
// We reload to blank page, so that reloading main page
|
|
// does not re-submit the post.
|
|
|
|
if (toDeleteFlag) {
|
|
// Fix busy state in FF3
|
|
setTimeout(function(){
|
|
removeNode(iframe);
|
|
}, 0);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
var doc = iframe.contentDocument ? iframe.contentDocument : window.frames[iframe.id].document;
|
|
|
|
// fixing Opera 9.26,10.00
|
|
if (doc.readyState && doc.readyState != 'complete') {
|
|
// Opera fires load event multiple times
|
|
// Even when the DOM is not ready yet
|
|
// this fix should not affect other browsers
|
|
return;
|
|
}
|
|
|
|
// fixing Opera 9.64
|
|
if (doc.body && doc.body.innerHTML == "false") {
|
|
// In Opera 9.64 event was fired second time
|
|
// when body.innerHTML changed from false
|
|
// to server response approx. after 1 sec
|
|
return;
|
|
}
|
|
|
|
var response;
|
|
|
|
if (doc.XMLDocument) {
|
|
// response is a xml document Internet Explorer property
|
|
response = doc.XMLDocument;
|
|
} else if (doc.body){
|
|
// response is html document or plain text
|
|
response = doc.body.innerHTML;
|
|
|
|
if (settings.responseType && settings.responseType.toLowerCase() == 'json') {
|
|
// If the document was sent as 'application/javascript' or
|
|
// 'text/javascript', then the browser wraps the text in a <pre>
|
|
// tag and performs html encoding on the contents. In this case,
|
|
// we need to pull the original text content from the text node's
|
|
// nodeValue property to retrieve the unmangled content.
|
|
// Note that IE6 only understands text/html
|
|
if (doc.body.firstChild && doc.body.firstChild.nodeName.toUpperCase() == 'PRE') {
|
|
doc.normalize();
|
|
response = doc.body.firstChild.firstChild.nodeValue;
|
|
}
|
|
|
|
if (response) {
|
|
response = eval("(" + response + ")");
|
|
} else {
|
|
response = {};
|
|
}
|
|
}
|
|
} else {
|
|
// response is a xml document
|
|
response = doc;
|
|
}
|
|
|
|
settings.onComplete.call(self, file, response);
|
|
|
|
// Reload blank page, so that reloading main page
|
|
// does not re-submit the post. Also, remember to
|
|
// delete the frame
|
|
toDeleteFlag = true;
|
|
|
|
// Fix IE mixed content issue
|
|
iframe.src = "javascript:'<html></html>';";
|
|
});
|
|
},
|
|
/**
|
|
* Upload file contained in this._input
|
|
*/
|
|
submit: function(){
|
|
var self = this, settings = this._settings;
|
|
|
|
if ( ! this._input || this._input.value === ''){
|
|
return;
|
|
}
|
|
|
|
var file = fileFromPath(this._input.value);
|
|
|
|
// user returned false to cancel upload
|
|
if (false === settings.onSubmit.call(this, file, getExt(file))){
|
|
this._clearInput();
|
|
return;
|
|
}
|
|
|
|
// sending request
|
|
var iframe = this._createIframe();
|
|
var form = this._createForm(iframe);
|
|
|
|
// assuming following structure
|
|
// div -> input type='file'
|
|
removeNode(this._input.parentNode);
|
|
removeClass(self._button, self._settings.hoverClass);
|
|
removeClass(self._button, self._settings.focusClass);
|
|
|
|
form.appendChild(this._input);
|
|
|
|
form.submit();
|
|
|
|
// request set, clean up
|
|
removeNode(form); form = null;
|
|
removeNode(this._input); this._input = null;
|
|
|
|
// Get response from iframe and fire onComplete event when ready
|
|
this._getResponse(iframe, file);
|
|
|
|
// get ready for next request
|
|
this._createInput();
|
|
}
|
|
};
|
|
})();
|