ng-file-upload-haikulearning
Version:
An AngularJS directive for file upload using HTML5 with FileAPI polyfill for unsupported browsers
56 lines (54 loc) • 1.93 kB
JavaScript
if (!window.FileReader) {
window.FileReader = function () {
var _this = this, loadStarted = false;
this.listeners = {};
this.addEventListener = function (type, fn) {
_this.listeners[type] = _this.listeners[type] || [];
_this.listeners[type].push(fn);
};
this.removeEventListener = function (type, fn) {
if (_this.listeners[type]) _this.listeners[type].splice(_this.listeners[type].indexOf(fn), 1);
};
this.dispatchEvent = function (evt) {
var list = _this.listeners[evt.type];
if (list) {
for (var i = 0; i < list.length; i++) {
list[i].call(_this, evt);
}
}
};
this.onabort = this.onerror = this.onload = this.onloadstart = this.onloadend = this.onprogress = null;
var constructEvent = function (type, evt) {
var e = {type: type, target: _this, loaded: evt.loaded, total: evt.total, error: evt.error};
if (evt.result != null) e.target.result = evt.result;
return e;
};
var listener = function (evt) {
if (!loadStarted) {
loadStarted = true;
if (_this.onloadstart) _this.onloadstart(constructEvent('loadstart', evt));
}
var e;
if (evt.type === 'load') {
if (_this.onloadend) _this.onloadend(constructEvent('loadend', evt));
e = constructEvent('load', evt);
if (_this.onload) _this.onload(e);
_this.dispatchEvent(e);
} else if (evt.type === 'progress') {
e = constructEvent('progress', evt);
if (_this.onprogress) _this.onprogress(e);
_this.dispatchEvent(e);
} else {
e = constructEvent('error', evt);
if (_this.onerror) _this.onerror(e);
_this.dispatchEvent(e);
}
};
this.readAsDataURL = function (file) {
FileAPI.readAsDataURL(file, listener);
};
this.readAsText = function (file) {
FileAPI.readAsText(file, listener);
};
};
}