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ng-file-upload.js

Uploaded on Jan 09 2022 04:02 by litorib830

/**!
* AngularJS file upload directives and services. Supoorts: file upload/drop/paste, resume, cancel/abort,
* progress, resize, thumbnail, preview, validation and CORS
* @author Danial <danial.farid@gmail.com>
* @version 12.2.13
*/

if (window.XMLHttpRequest && !(window.FileAPI && FileAPI.shouldLoad)) {
window.XMLHttpRequest.prototype.setRequestHeader = (function (orig) {
return function (header, value) {
if (header === '__setXHR_') {
var val = value(this);
// fix for angular < 1.2.0
if (val instanceof Function) {
val(this);
}
} else {
orig.apply(this, arguments);
}
};
})(window.XMLHttpRequest.prototype.setRequestHeader);
}

var ngFileUpload = angular.module('ngFileUpload', []);

ngFileUpload.version = '12.2.13';

ngFileUpload.service('UploadBase', ['$http', '$q', '$timeout', function ($http, $q, $timeout) {
var upload = this;
upload.promisesCount = 0;

this.isResumeSupported = function () {
return window.Blob && window.Blob.prototype.slice;
};

var resumeSupported = this.isResumeSupported();

function sendHttp(config) {
config.method = config.method || 'POST';
config.headers = config.headers || {};

var deferred = config._deferred = config._deferred || $q.defer();
var promise = deferred.promise;

function notifyProgress(e) {
if (deferred.notify) {
deferred.notify(e);
}
if (promise.progressFunc) {
$timeout(function () {
promise.progressFunc(e);
});
}
}

function getNotifyEvent(n) {
if (config._start != null && resumeSupported) {
return {
loaded: n.loaded + config._start,
total: (config._file && config._file.size) || n.total,
type: n.type, config: config,
lengthComputable: true, target: n.target
};
} else {
return n;
}
}

if (!config.disableProgress) {
config.headers.__setXHR_ = function () {
return function (xhr) {
if (!xhr || !xhr.upload || !xhr.upload.addEventListener) return;
config.__XHR = xhr;
if (config.xhrFn) config.xhrFn(xhr);
xhr.upload.addEventListener('progress', function (e) {
e.config = config;
notifyProgress(getNotifyEvent(e));
}, false);
//fix for firefox not firing upload progress end, also IE8-9
xhr.upload.addEventListener('load', function (e) {
if (e.lengthComputable) {
e.config = config;
notifyProgress(getNotifyEvent(e));
}
}, false);
};
};
}

function uploadWithAngular() {
$http(config).then(function (r) {
if (resumeSupported && config._chunkSize && !config._finished && config._file) {
var fileSize = config._file && config._file.size || 0;
notifyProgress({
loaded: Math.min(config._end, fileSize),
total: fileSize,
config: config,
type: 'progress'
}
);
upload.upload(config, true);
} else {
if (config._finished) delete config._finished;
deferred.resolve(r);
}
}, function (e) {
deferred.reject(e);
}, function (n) {
deferred.notify(n);
}
);
}

if (!resumeSupported) {
uploadWithAngular();
} else if (config._chunkSize && config._end && !config._finished) {
config._start = config._end;
config._end += config._chunkSize;
uploadWithAngular();
} else if (config.resumeSizeUrl) {
$http.get(config.resumeSizeUrl).then(function (resp) {
if (config.resumeSizeResponseReader) {
config._start = config.resumeSizeResponseReader(resp.data);
} else {
config._start = parseInt((resp.data.size == null ? resp.data : resp.data.size).toString());
}
if (config._chunkSize) {
config._end = config._start + config._chunkSize;
}
uploadWithAngular();
}, function (e) {
throw e;
});
} else if (config.resumeSize) {
config.resumeSize().then(function (size) {
config._start = size;
if (config._chunkSize) {
config._end = config._start + config._chunkSize;
}
uploadWithAngular();
}, function (e) {
throw e;
});
} else {
if (config._chunkSize) {
config._start = 0;
config._end = config._start + config._chunkSize;
}
uploadWithAngular();
}


promise.success = function (fn) {
promise.then(function (response) {
fn(response.data, response.status, response.headers, config);
});
return promise;
};

promise.error = function (fn) {
promise.then(null, function (response) {
fn(response.data, response.status, response.headers, config);
});
return promise;
};

promise.progress = function (fn) {
promise.progressFunc = fn;
promise.then(null, null, function (n) {
fn(n);
});
return promise;
};
promise.abort = promise.pause = function () {
if (config.__XHR) {
$timeout(function () {
config.__XHR.abort();
});
}
return promise;
};
promise.xhr = function (fn) {
config.xhrFn = (function (origXhrFn) {
return function () {
if (origXhrFn) origXhrFn.apply(promise, arguments);
fn.apply(promise, arguments);
};
})(config.xhrFn);
return promise;
};

upload.promisesCount++;
if (promise['finally'] && promise['finally'] instanceof Function) {
promise['finally'](function () {
upload.promisesCount--;
});
}
return promise;
}

this.isUploadInProgress = function () {
return upload.promisesCount > 0;
};

this.rename = function (file, name) {
file.ngfName = name;
return file;
};

this.jsonBlob = function (val) {
if (val != null && !angular.isString(val)) {
val = JSON.stringify(val);
}
var blob = new window.Blob([val], {type: 'application/json'});
blob._ngfBlob = true;
return blob;
};

this.json = function (val) {
return angular.toJson(val);
};

function copy(obj) {
var clone = {};
for (var key in obj) {
if (obj.hasOwnProperty(key)) {
clone[key] = obj[key];
}
}
return clone;
}

this.isFile = function (file) {
return file != null && (file instanceof window.Blob || (file.flashId && file.name && file.size));
};

this.upload = function (config, internal) {
function toResumeFile(file, formData) {
if (file._ngfBlob) return file;
config._file = config._file || file;
if (config._start != null && resumeSupported) {
if (config._end && config._end >= file.size) {
config._finished = true;
config._end = file.size;
}
var slice = file.slice(config._start, config._end || file.size);
slice.name = file.name;
slice.ngfName = file.ngfName;
if (config._chunkSize) {
formData.append('_chunkSize', config._chunkSize);
formData.append('_currentChunkSize', config._end - config._start);
formData.append('_chunkNumber', Math.floor(config._start / config._chunkSize));
formData.append('_totalSize', config._file.size);
}
return slice;
}
return file;
}

function addFieldToFormData(formData, val, key) {
if (val !== undefined) {
if (angular.isDate(val)) {
val = val.toISOString();
}
if (angular.isString(val)) {
formData.append(key, val);
} else if (upload.isFile(val)) {
var file = toResumeFile(val, formData);
var split = key.split(',');
if (split[1]) {
file.ngfName = split[1].replace(/^\s+|\s+$/g, '');
key = split[0];
}
config._fileKey = config._fileKey || key;
formData.append(key, file, file.ngfName || file.name);
} else {
if (angular.isObject(val)) {
if (val.$$ngfCircularDetection) throw 'ngFileUpload: Circular reference in config.data. Make sure specified data for Upload.upload() has no circular reference: ' + key;

val.$$ngfCircularDetection = true;
try {
for (var k in val) {
if (val.hasOwnProperty(k) && k !== '$$ngfCircularDetection') {
var objectKey = config.objectKey == null ? '[i]' : config.objectKey;
if (val.length && parseInt(k) > -1) {
objectKey = config.arrayKey == null ? objectKey : config.arrayKey;
}
addFieldToFormData(formData, val[k], key + objectKey.replace(/[ik]/g, k));
}
}
} finally {
delete val.$$ngfCircularDetection;
}
} else {
formData.append(key, val);
}
}
}
}

function digestConfig() {
config._chunkSize = upload.translateScalars(config.resumeChunkSize);
config._chunkSize = config._chunkSize ? parseInt(config._chunkSize.toString()) : null;

config.headers = config.headers || {};
config.headers['Content-Type'] = undefined;
config.transformRequest = config.transformRequest ?
(angular.isArray(config.transformRequest) ?
config.transformRequest : [config.transformRequest]) : [];
config.transformRequest.push(function (data) {
var formData = new window.FormData(), key;
data = data || config.fields || {};
if (config.file) {
data.file = config.file;
}
for (key in data) {
if (data.hasOwnProperty(key)) {
var val = data[key];
if (config.formDataAppender) {
config.formDataAppender(formData, key, val);
} else {
addFieldToFormData(formData, val, key);
}
}
}

return formData;
});
}

if (!internal) config = copy(config);
if (!config._isDigested) {
config._isDigested = true;
digestConfig();
}

return sendHttp(config);
};

this.http = function (config) {
config = copy(config);
config.transformRequest = config.transformRequest || function (data) {
if ((window.ArrayBuffer && data instanceof window.ArrayBuffer) || data instanceof window.Blob) {
return data;
}
return $http.defaults.transformRequest[0].apply(this, arguments);
};
config._chunkSize = upload.translateScalars(config.resumeChunkSize);
config._chunkSize = config._chunkSize ? parseInt(config._chunkSize.toString()) : null;

return sendHttp(config);
};

this.translateScalars = function (str) {
if (angular.isString(str)) {
if (str.search(/kb/i) === str.length - 2) {
return parseFloat(str.substring(0, str.length - 2) * 1024);
} else if (str.search(/mb/i) === str.length - 2) {
return parseFloat(str.substring(0, str.length - 2) * 1048576);
} else if (str.search(/gb/i) === str.length - 2) {
return parseFloat(str.substring(0, str.length - 2) * 1073741824);
} else if (str.search(/b/i) === str.length - 1) {
return parseFloat(str.substring(0, str.length - 1));
} else if (str.search(/s/i) === str.length - 1) {
return parseFloat(str.substring(0, str.length - 1));
} else if (str.search(/m/i) === str.length - 1) {
return parseFloat(str.substring(0, str.length - 1) * 60);
} else if (str.search(/h/i) === str.length - 1) {
return parseFloat(str.substring(0, str.length - 1) * 3600);
}
}
return str;
};

this.urlToBlob = function(url) {
var defer = $q.defer();
$http({url: url, method: 'get', responseType: 'arraybuffer'}).then(function (resp) {
var arrayBufferView = new Uint8Array(resp.data);
var type = resp.headers('content-type') || 'image/WebP';
var blob = new window.Blob([arrayBufferView], {type: type});
var matches = url.match(/.*\/(.+?)(\?.*)?$/);
if (matches.length > 1) {
blob.name = matches[1];
}
defer.resolve(blob);
}, function (e) {
defer.reject(e);
});
return defer.promise;
};

this.setDefaults = function (defaults) {
this.defaults = defaults || {};
};

this.defaults = {};
this.version = ngFileUpload.version;
}

]);

ngFileUpload.service('Upload', ['$parse', '$timeout', '$compile', '$q', 'UploadExif', function ($parse, $timeout, $compile, $q, UploadExif) {
var upload = UploadExif;
upload.getAttrWithDefaults = function (attr, name) {
if (attr[name] != null) return attr[name];
var def = upload.defaults[name];
return (def == null ? def : (angular.isString(def) ? def : JSON.stringify(def)));
};

upload.attrGetter = function (name, attr, scope, params) {
var attrVal = this.getAttrWithDefaults(attr, name);
if (scope) {
try {
if (params) {
return $parse(attrVal)(scope, params);
} else {
return $parse(attrVal)(scope);
}
} catch (e) {
// hangle string value without single qoute
if (name.search(/min|max|pattern/i)) {
return attrVal;
} else {
throw e;
}
}
} else {
return attrVal;
}
};

upload.shouldUpdateOn = function (type, attr, scope) {
var modelOptions = upload.attrGetter('ngfModelOptions', attr, scope);
if (modelOptions && modelOptions.updateOn) {
return modelOptions.updateOn.split(' ').indexOf(type) > -1;
}
return true;
};

upload.emptyPromise = function () {
var d = $q.defer();
var args = arguments;
$timeout(function () {
d.resolve.apply(d, args);
});
return d.promise;
};

upload.rejectPromise = function () {
var d = $q.defer();
var args = arguments;
$timeout(function () {
d.reject.apply(d, args);
});
return d.promise;
};

upload.happyPromise = function (promise, data) {
var d = $q.defer();
promise.then(function (result) {
d.resolve(result);
}, function (error) {
$timeout(function () {
throw error;
});
d.resolve(data);
});
return d.promise;
};

function applyExifRotations(files, attr, scope) {
var promises = [upload.emptyPromise()];
angular.forEach(files, function (f, i) {
if (f.type.indexOf('image/jpeg') === 0 && upload.attrGetter('ngfFixOrientation', attr, scope, {$file: f})) {
promises.push(upload.happyPromise(upload.applyExifRotation(f), f).then(function (fixedFile) {
files.splice(i, 1, fixedFile);
}));
}
});
return $q.all(promises);
}

function resizeFile(files, attr, scope, ngModel) {
var resizeVal = upload.attrGetter('ngfResize', attr, scope);
if (!resizeVal || !upload.isResizeSupported() || !files.length) return upload.emptyPromise();
if (resizeVal instanceof Function) {
var defer = $q.defer();
return resizeVal(files).then(function (p) {
resizeWithParams(p, files, attr, scope, ngModel).then(function (r) {
defer.resolve(r);
}, function (e) {
defer.reject(e);
});
}, function (e) {
defer.reject(e);
});
} else {
return resizeWithParams(resizeVal, files, attr, scope, ngModel);
}
}

function resizeWithParams(params, files, attr, scope, ngModel) {
var promises = [upload.emptyPromise()];

function handleFile(f, i) {
if (f.type.indexOf('image') === 0) {
if (params.pattern && !upload.validatePattern(f, params.pattern)) return;
params.resizeIf = function (width, height) {
return upload.attrGetter('ngfResizeIf', attr, scope,
{$width: width, $height: height, $file: f});
};
var promise = upload.resize(f, params);
promises.push(promise);
promise.then(function (resizedFile) {
files.splice(i, 1, resizedFile);
}, function (e) {
f.$error = 'resize';
(f.$errorMessages = (f.$errorMessages || {})).resize = true;
f.$errorParam = (e ? (e.message ? e.message : e) + ': ' : '') + (f && f.name);
ngModel.$ngfValidations.push({name: 'resize', valid: false});
upload.applyModelValidation(ngModel, files);
});
}
}

for (var i = 0; i < files.length; i++) {
handleFile(files[i], i);
}
return $q.all(promises);
}

upload.updateModel = function (ngModel, attr, scope, fileChange, files, evt, noDelay) {
function update(files, invalidFiles, newFiles, dupFiles, isSingleModel) {
attr.$$ngfPrevValidFiles = files;
attr.$$ngfPrevInvalidFiles = invalidFiles;
var file = files && files.length ? files[0] : null;
var invalidFile = invalidFiles && invalidFiles.length ? invalidFiles[0] : null;

if (ngModel) {
upload.applyModelValidation(ngModel, files);
ngModel.$setViewValue(isSingleModel ? file : files);
}

if (fileChange) {
$parse(fileChange)(scope, {
$files: files,
$file: file,
$newFiles: newFiles,
$duplicateFiles: dupFiles,
$invalidFiles: invalidFiles,
$invalidFile: invalidFile,
$event: evt
});
}

var invalidModel = upload.attrGetter('ngfModelInvalid', attr);
if (invalidModel) {
$timeout(function () {
$parse(invalidModel).assign(scope, isSingleModel ? invalidFile : invalidFiles);
});
}
$timeout(function () {
// scope apply changes
});
}

var allNewFiles, dupFiles = [], prevValidFiles, prevInvalidFiles,
invalids = [], valids = [];

function removeDuplicates() {
function equals(f1, f2) {
return f1.name === f2.name && (f1.$ngfOrigSize || f1.size) === (f2.$ngfOrigSize || f2.size) &&
f1.type === f2.type;
}

function isInPrevFiles(f) {
var j;
for (j = 0; j < prevValidFiles.length; j++) {
if (equals(f, prevValidFiles[j])) {
return true;
}
}
for (j = 0; j < prevInvalidFiles.length; j++) {
if (equals(f, prevInvalidFiles[j])) {
return true;
}
}
return false;
}

if (files) {
allNewFiles = [];
dupFiles = [];
for (var i = 0; i < files.length; i++) {
if (isInPrevFiles(files[i])) {
dupFiles.push(files[i]);
} else {
allNewFiles.push(files[i]);
}
}
}
}

function toArray(v) {
return angular.isArray(v) ? v : [v];
}

function resizeAndUpdate() {
function updateModel() {
$timeout(function () {
update(keep ? prevValidFiles.concat(valids) : valids,
keep ? prevInvalidFiles.concat(invalids) : invalids,
files, dupFiles, isSingleModel);
}, options && options.debounce ? options.debounce.change || options.debounce : 0);
}

var resizingFiles = validateAfterResize ? allNewFiles : valids;
resizeFile(resizingFiles, attr, scope, ngModel).then(function () {
if (validateAfterResize) {
upload.validate(allNewFiles, keep ? prevValidFiles.length : 0, ngModel, attr, scope)
.then(function (validationResult) {
valids = validationResult.validsFiles;
invalids = validationResult.invalidsFiles;
updateModel();
});
} else {
updateModel();
}
}, function () {
for (var i = 0; i < resizingFiles.length; i++) {
var f = resizingFiles[i];
if (f.$error === 'resize') {
var index = valids.indexOf(f);
if (index > -1) {
valids.splice(index, 1);
invalids.push(f);
}
updateModel();
}
}
});
}

prevValidFiles = attr.$$ngfPrevValidFiles || [];
prevInvalidFiles = attr.$$ngfPrevInvalidFiles || [];
if (ngModel && ngModel.$modelValue) {
prevValidFiles = toArray(ngModel.$modelValue);
}

var keep = upload.attrGetter('ngfKeep', attr, scope);
allNewFiles = (files || []).slice(0);
if (keep === 'distinct' || upload.attrGetter('ngfKeepDistinct', attr, scope) === true) {
removeDuplicates(attr, scope);
}

var isSingleModel = !keep && !upload.attrGetter('ngfMultiple', attr, scope) && !upload.attrGetter('multiple', attr);

if (keep && !allNewFiles.length) return;

upload.attrGetter('ngfBeforeModelChange', attr, scope, {
$files: files,
$file: files && files.length ? files[0] : null,
$newFiles: allNewFiles,
$duplicateFiles: dupFiles,
$event: evt
});

var validateAfterResize = upload.attrGetter('ngfValidateAfterResize', attr, scope);

var options = upload.attrGetter('ngfModelOptions', attr, scope);
upload.validate(allNewFiles, keep ? prevValidFiles.length : 0, ngModel, attr, scope)
.then(function (validationResult) {
if (noDelay) {
update(allNewFiles, [], files, dupFiles, isSingleModel);
} else {
if ((!options || !options.allowInvalid) && !validateAfterResize) {
valids = validationResult.validFiles;
invalids = validationResult.invalidFiles;
} else {
valids = allNewFiles;
}
if (upload.attrGetter('ngfFixOrientation', attr, scope) && upload.isExifSupported()) {
applyExifRotations(valids, attr, scope).then(function () {
resizeAndUpdate();
});
} else {
resizeAndUpdate();
}
}
});
};

return upload;
}]);

ngFileUpload.directive('ngfSelect', ['$parse', '$timeout', '$compile', 'Upload', function ($parse, $timeout, $compile, Upload) {
var generatedElems = [];

function isDelayedClickSupported(ua) {
// fix for android native browser < 4.4 and safari windows
var m = ua.match(/Android[^\d]*(\d+)\.(\d+)/);
if (m && m.length > 2) {
var v = Upload.defaults.androidFixMinorVersion || 4;
return parseInt(m[1]) < 4 || (parseInt(m[1]) === v && parseInt(m[2]) < v);
}

// safari on windows
return ua.indexOf('Chrome') === -1 && /.*Windows.*Safari.*/.test(ua);
}

function linkFileSelect(scope, elem, attr, ngModel, $parse, $timeout, $compile, upload) {
/** @namespace attr.ngfSelect */
/** @namespace attr.ngfChange */
/** @namespace attr.ngModel */
/** @namespace attr.ngfModelOptions */
/** @namespace attr.ngfMultiple */
/** @namespace attr.ngfCapture */
/** @namespace attr.ngfValidate */
/** @namespace attr.ngfKeep */
var attrGetter = function (name, scope) {
return upload.attrGetter(name, attr, scope);
};

function isInputTypeFile() {
return elem[0].tagName.toLowerCase() === 'input' && attr.type && attr.type.toLowerCase() === 'file';
}

function fileChangeAttr() {
return attrGetter('ngfChange') || attrGetter('ngfSelect');
}

function changeFn(evt) {
if (upload.shouldUpdateOn('change', attr, scope)) {
var fileList = evt.__files_ || (evt.target && evt.target.files), files = [];
/* Handle duplicate call in IE11 */
if (!fileList) return;
for (var i = 0; i < fileList.length; i++) {
files.push(fileList[i]);
}
upload.updateModel(ngModel, attr, scope, fileChangeAttr(),
files.length ? files : null, evt);
}
}

upload.registerModelChangeValidator(ngModel, attr, scope);

var unwatches = [];
if (attrGetter('ngfMultiple')) {
unwatches.push(scope.$watch(attrGetter('ngfMultiple'), function () {
fileElem.attr('multiple', attrGetter('ngfMultiple', scope));
}));
}
if (attrGetter('ngfCapture')) {
unwatches.push(scope.$watch(attrGetter('ngfCapture'), function () {
fileElem.attr('capture', attrGetter('ngfCapture', scope));
}));
}
if (attrGetter('ngfAccept')) {
unwatches.push(scope.$watch(attrGetter('ngfAccept'), function () {
fileElem.attr('accept', attrGetter('ngfAccept', scope));
}));
}
unwatches.push(attr.$observe('accept', function () {
fileElem.attr('accept', attrGetter('accept'));
}));
function bindAttrToFileInput(fileElem, label) {
function updateId(val) {
fileElem.attr('id', 'ngf-' + val);
label.attr('id', 'ngf-label-' + val);
}

for (var i = 0; i < elem[0].attributes.length; i++) {
var attribute = elem[0].attributes[i];
if (attribute.name !== 'type' && attribute.name !== 'class' && attribute.name !== 'style') {
if (attribute.name === 'id') {
updateId(attribute.value);
unwatches.push(attr.$observe('id', updateId));
} else {
fileElem.attr(attribute.name, (!attribute.value && (attribute.name === 'required' ||
attribute.name === 'multiple')) ? attribute.name : attribute.value);
}
}
}
}

function createFileInput() {
if (isInputTypeFile()) {
return elem;
}

var fileElem = angular.element('<input type="file">');

var label = angular.element('<label>upload</label>');
label.css('visibility', 'hidden').css('position', 'absolute').css('overflow', 'hidden')
.css('width', '0px').css('height', '0px').css('border', 'none')
.css('margin', '0px').css('padding', '0px').attr('tabindex', '-1');
bindAttrToFileInput(fileElem, label);

generatedElems.push({el: elem, ref: label});

document.body.appendChild(label.append(fileElem)[0]);

return fileElem;
}

function clickHandler(evt) {
if (elem.attr('disabled')) return false;
if (attrGetter('ngfSelectDisabled', scope)) return;

var r = detectSwipe(evt);
// prevent the click if it is a swipe
if (r != null) return r;

resetModel(evt);

// fix for md when the element is removed from the DOM and added back #460
try {
if (!isInputTypeFile() && !document.body.contains(fileElem[0])) {
generatedElems.push({el: elem, ref: fileElem.parent()});
document.body.appendChild(fileElem.parent()[0]);
fileElem.bind('change', changeFn);
}
} catch (e) {/*ignore*/
}

if (isDelayedClickSupported(navigator.userAgent)) {
setTimeout(function () {
fileElem[0].click();
}, 0);
} else {
fileElem[0].click();
}

return false;
}


var initialTouchStartY = 0;
var initialTouchStartX = 0;

function detectSwipe(evt) {
var touches = evt.changedTouches || (evt.originalEvent && evt.originalEvent.changedTouches);
if (touches) {
if (evt.type === 'touchstart') {
initialTouchStartX = touches[0].clientX;
initialTouchStartY = touches[0].clientY;
return true; // don't block event default
} else {
// prevent scroll from triggering event
if (evt.type === 'touchend') {
var currentX = touches[0].clientX;
var currentY = touches[0].clientY;
if ((Math.abs(currentX - initialTouchStartX) > 20) ||
(Math.abs(currentY - initialTouchStartY) > 20)) {
evt.stopPropagation();
evt.preventDefault();
return false;
}
}
return true;
}
}
}

var fileElem = elem;

function resetModel(evt) {
if (upload.shouldUpdateOn('click', attr, scope) && fileElem.val()) {
fileElem.val(null);
upload.updateModel(ngModel, attr, scope, fileChangeAttr(), null, evt, true);
}
}

if (!isInputTypeFile()) {
fileElem = createFileInput();
}
fileElem.bind('change', changeFn);

if (!isInputTypeFile()) {
elem.bind('click touchstart touchend', clickHandler);
} else {
elem.bind('click', resetModel);
}

function ie10SameFileSelectFix(evt) {
if (fileElem && !fileElem.attr('__ngf_ie10_Fix_')) {
if (!fileElem[0].parentNode) {
fileElem = null;
return;
}
evt.preventDefault();
evt.stopPropagation();
fileElem.unbind('click');
var clone = fileElem.clone();
fileElem.replaceWith(clone);
fileElem = clone;
fileElem.attr('__ngf_ie10_Fix_', 'true');
fileElem.bind('change', changeFn);
fileElem.bind('click', ie10SameFileSelectFix);
fileElem[0].click();
return false;
} else {
fileElem.removeAttr('__ngf_ie10_Fix_');
}
}

if (navigator.appVersion.indexOf('MSIE 10') !== -1) {
fileElem.bind('click', ie10SameFileSelectFix);
}

if (ngModel) ngModel.$formatters.push(function (val) {
if (val == null || val.length === 0) {
if (fileElem.val()) {
fileElem.val(null);
}
}
return val;
});

scope.$on('$destroy', function () {
if (!isInputTypeFile()) fileElem.parent().remove();
angular.forEach(unwatches, function (unwatch) {
unwatch();
});
});

$timeout(function () {
for (var i = 0; i < generatedElems.length; i++) {
var g = generatedElems[i];
if (!document.body.contains(g.el[0])) {
generatedElems.splice(i, 1);
g.ref.remove();
}
}
});

if (window.FileAPI && window.FileAPI.ngfFixIE) {
window.FileAPI.ngfFixIE(elem, fileElem, changeFn);
}
}

return {
restrict: 'AEC',
require: '?ngModel',
link: function (scope, elem, attr, ngModel) {
linkFileSelect(scope, elem, attr, ngModel, $parse, $timeout, $compile, Upload);
}
};
}]);

(function () {

ngFileUpload.service('UploadDataUrl', ['UploadBase', '$timeout', '$q', function (UploadBase, $timeout, $q) {
var upload = UploadBase;
upload.base64DataUrl = function (file) {
if (angular.isArray(file)) {
var d = $q.defer(), count = 0;
angular.forEach(file, function (f) {
upload.dataUrl(f, true)['finally'](function () {
count++;
if (count === file.length) {
var urls = [];
angular.forEach(file, function (ff) {
urls.push(ff.$ngfDataUrl);
});
d.resolve(urls, file);
}
});
});
return d.promise;
} else {
return upload.dataUrl(file, true);
}
};
upload.dataUrl = function (file, disallowObjectUrl) {
if (!file) return upload.emptyPromise(file, file);
if ((disallowObjectUrl && file.$ngfDataUrl != null) || (!disallowObjectUrl && file.$ngfBlobUrl != null)) {
return upload.emptyPromise(disallowObjectUrl ? file.$ngfDataUrl : file.$ngfBlobUrl, file);
}
var p = disallowObjectUrl ? file.$$ngfDataUrlPromise : file.$$ngfBlobUrlPromise;
if (p) return p;

var deferred = $q.defer();
$timeout(function () {
if (window.FileReader && file &&
(!window.FileAPI || navigator.userAgent.indexOf('MSIE 8') === -1 || file.size < 20000) &&
(!window.FileAPI || navigator.userAgent.indexOf('MSIE 9') === -1 || file.size < 4000000)) {
//prefer URL.createObjectURL for handling refrences to files of all sizes
//since it doesn´t build a large string in memory
var URL = window.URL || window.webkitURL;
if (URL && URL.createObjectURL && !disallowObjectUrl) {
var url;
try {
url = URL.createObjectURL(file);
} catch (e) {
$timeout(function () {
file.$ngfBlobUrl = '';
deferred.reject();
});
return;
}
$timeout(function () {
file.$ngfBlobUrl = url;
if (url) {
deferred.resolve(url, file);
upload.blobUrls = upload.blobUrls || [];
upload.blobUrlsTotalSize = upload.blobUrlsTotalSize || 0;
upload.blobUrls.push({url: url, size: file.size});
upload.blobUrlsTotalSize += file.size || 0;
var maxMemory = upload.defaults.blobUrlsMaxMemory || 268435456;
var maxLength = upload.defaults.blobUrlsMaxQueueSize || 200;
while ((upload.blobUrlsTotalSize > maxMemory || upload.blobUrls.length > maxLength) && upload.blobUrls.length > 1) {
var obj = upload.blobUrls.splice(0, 1)[0];
URL.revokeObjectURL(obj.url);
upload.blobUrlsTotalSize -= obj.size;
}
}
});
} else {
var fileReader = new FileReader();
fileReader.onload = function (e) {
$timeout(function () {
file.$ngfDataUrl = e.target.result;
deferred.resolve(e.target.result, file);
$timeout(function () {
delete file.$ngfDataUrl;
}, 1000);
});
};
fileReader.onerror = function () {
$timeout(function () {
file.$ngfDataUrl = '';
deferred.reject();
});
};
fileReader.readAsDataURL(file);
}
} else {
$timeout(function () {
file[disallowObjectUrl ? '$ngfDataUrl' : '$ngfBlobUrl'] = '';
deferred.reject();
});
}
});

if (disallowObjectUrl) {
p = file.$$ngfDataUrlPromise = deferred.promise;
} else {
p = file.$$ngfBlobUrlPromise = deferred.promise;
}
p['finally'](function () {
delete file[disallowObjectUrl ? '$$ngfDataUrlPromise' : '$$ngfBlobUrlPromise'];
});
return p;
};
return upload;
}]);

function getTagType(el) {
if (el.tagName.toLowerCase() === 'img') return 'image';
if (el.tagName.toLowerCase() === 'audio') return 'audio';
if (el.tagName.toLowerCase() === 'video') return 'video';
return /./;
}

function linkFileDirective(Upload, $timeout, scope, elem, attr, directiveName, resizeParams, isBackground) {
function constructDataUrl(file) {
var disallowObjectUrl = Upload.attrGetter('ngfNoObjectUrl', attr, scope);
Upload.dataUrl(file, disallowObjectUrl)['finally'](function () {
$timeout(function () {
var src = (disallowObjectUrl ? file.$ngfDataUrl : file.$ngfBlobUrl) || file.$ngfDataUrl;
if (isBackground) {
elem.css('background-image', 'url(\'' + (src || '') + '\')');
} else {
elem.attr('src', src);
}
if (src) {
elem.removeClass('ng-hide');
} else {
elem.addClass('ng-hide');
}
});
});
}

$timeout(function () {
var unwatch = scope.$watch(attr[directiveName], function (file) {
var size = resizeParams;
if (directiveName === 'ngfThumbnail') {
if (!size) {
size = {
width: elem[0].naturalWidth || elem[0].clientWidth,
height: elem[0].naturalHeight || elem[0].clientHeight
};
}
if (size.width === 0 && window.getComputedStyle) {
var style = getComputedStyle(elem[0]);
if (style.width && style.width.indexOf('px') > -1 && style.height && style.height.indexOf('px') > -1) {
size = {
width: parseInt(style.width.slice(0, -2)),
height: parseInt(style.height.slice(0, -2))
};
}
}
}

if (angular.isString(file)) {
elem.removeClass('ng-hide');
if (isBackground) {
return elem.css('background-image', 'url(\'' + file + '\')');
} else {
return elem.attr('src', file);
}
}
if (file && file.type && file.type.search(getTagType(elem[0])) === 0 &&
(!isBackground || file.type.indexOf('image') === 0)) {
if (size && Upload.isResizeSupported()) {
size.resizeIf = function (width, height) {
return Upload.attrGetter('ngfResizeIf', attr, scope,
{$width: width, $height: height, $file: file});
};
Upload.resize(file, size).then(
function (f) {
constructDataUrl(f);
}, function (e) {
throw e;
}
);
} else {
constructDataUrl(file);
}
} else {
elem.addClass('ng-hide');
}
});

scope.$on('$destroy', function () {
unwatch();
});
});
}


/** @namespace attr.ngfSrc */
/** @namespace attr.ngfNoObjectUrl */
ngFileUpload.directive('ngfSrc', ['Upload', '$timeout', function (Upload, $timeout) {
return {
restrict: 'AE',
link: function (scope, elem, attr) {
linkFileDirective(Upload, $timeout, scope, elem, attr, 'ngfSrc',
Upload.attrGetter('ngfResize', attr, scope), false);
}
};
}]);

/** @namespace attr.ngfBackground */
/** @namespace attr.ngfNoObjectUrl */
ngFileUpload.directive('ngfBackground', ['Upload', '$timeout', function (Upload, $timeout) {
return {
restrict: 'AE',
link: function (scope, elem, attr) {
linkFileDirective(Upload, $timeout, scope, elem, attr, 'ngfBackground',
Upload.attrGetter('ngfResize', attr, scope), true);
}
};
}]);

/** @namespace attr.ngfThumbnail */
/** @namespace attr.ngfAsBackground */
/** @namespace attr.ngfSize */
/** @namespace attr.ngfNoObjectUrl */
ngFileUpload.directive('ngfThumbnail', ['Upload', '$timeout', function (Upload, $timeout) {
return {
restrict: 'AE',
link: function (scope, elem, attr) {
var size = Upload.attrGetter('ngfSize', attr, scope);
linkFileDirective(Upload, $timeout, scope, elem, attr, 'ngfThumbnail', size,
Upload.attrGetter('ngfAsBackground', attr, scope));
}
};
}]);

ngFileUpload.config(['$compileProvider', function ($compileProvider) {
if ($compileProvider.imgSrcSanitizationWhitelist) $compileProvider.imgSrcSanitizationWhitelist(/^\s*(https?|ftp|mailto|tel|webcal|local|file|data|blob):/);
if ($compileProvider.aHrefSanitizationWhitelist) $compileProvider.aHrefSanitizationWhitelist(/^\s*(https?|ftp|mailto|tel|webcal|local|file|data|blob):/);
}]);

ngFileUpload.filter('ngfDataUrl', ['UploadDataUrl', '$sce', function (UploadDataUrl, $sce) {
return function (file, disallowObjectUrl, trustedUrl) {
if (angular.isString(file)) {
return $sce.trustAsResourceUrl(file);
}
var src = file && ((disallowObjectUrl ? file.$ngfDataUrl : file.$ngfBlobUrl) || file.$ngfDataUrl);
if (file && !src) {
if (!file.$ngfDataUrlFilterInProgress && angular.isObject(file)) {
file.$ngfDataUrlFilterInProgress = true;
UploadDataUrl.dataUrl(file, disallowObjectUrl);
}
return '';
}
if (file) delete file.$ngfDataUrlFilterInProgress;
return (file && src ? (trustedUrl ? $sce.trustAsResourceUrl(src) : src) : file) || '';
};
}]);

})();

ngFileUpload.service('UploadValidate', ['UploadDataUrl', '$q', '$timeout', function (UploadDataUrl, $q, $timeout) {
var upload = UploadDataUrl;

function globStringToRegex(str) {
var regexp = '', excludes = [];
if (str.length > 2 && str[0] === '/' && str[str.length - 1] === '/') {
regexp = str.substring(1, str.length - 1);
} else {
var split = str.split(',');
if (split.length > 1) {
for (var i = 0; i < split.length; i++) {
var r = globStringToRegex(split[i]);
if (r.regexp) {
regexp += '(' + r.regexp + ')';
if (i < split.length - 1) {
regexp += '|';
}
} else {
excludes = excludes.concat(r.excludes);
}
}
} else {
if (str.indexOf('!') === 0) {
excludes.push('^((?!' + globStringToRegex(str.substring(1)).regexp + ').)*$');
} else {
if (str.indexOf('.') === 0) {
str = '*' + str;
}
regexp = '^' + str.replace(new RegExp('[.\\\\+*?\\[\\^\\]$(){}=!<>|:\\-]', 'g'), '\\$&') + '$';
regexp = regexp.replace(/\\\*/g, '.*').replace(/\\\?/g, '.');
}
}
}
return {regexp: regexp, excludes: excludes};
}

upload.validatePattern = function (file, val) {
if (!val) {
return true;
}
var pattern = globStringToRegex(val), valid = true;
if (pattern.regexp && pattern.regexp.length) {
var regexp = new RegExp(pattern.regexp, 'i');
valid = (file.type != null && regexp.test(file.type)) ||
(file.name != null && regexp.test(file.name));
}
var len = pattern.excludes.length;
while (len--) {
var exclude = new RegExp(pattern.excludes[len], 'i');
valid = valid && (file.type == null || exclude.test(file.type)) &&
(file.name == null || exclude.test(file.name));
}
return valid;
};

upload.ratioToFloat = function (val) {
var r = val.toString(), xIndex = r.search(/[x:]/i);
if (xIndex > -1) {
r = parseFloat(r.substring(0, xIndex)) / parseFloat(r.substring(xIndex + 1));
} else {
r = parseFloat(r);
}
return r;
};

upload.registerModelChangeValidator = function (ngModel, attr, scope) {
if (ngModel) {
ngModel.$formatters.push(function (files) {
if (ngModel.$dirty) {
var filesArray = files;
if (files && !angular.isArray(files)) {
filesArray = [files];
}
upload.validate(filesArray, 0, ngModel, attr, scope).then(function () {
upload.applyModelValidation(ngModel, filesArray);
});
}
return files;
});
}
};

function markModelAsDirty(ngModel, files) {
if (files != null && !ngModel.$dirty) {
if (ngModel.$setDirty) {
ngModel.$setDirty();
} else {
ngModel.$dirty = true;
}
}
}

upload.applyModelValidation = function (ngModel, files) {
markModelAsDirty(ngModel, files);
angular.forEach(ngModel.$ngfValidations, function (validation) {
ngModel.$setValidity(validation.name, validation.valid);
});
};

upload.getValidationAttr = function (attr, scope, name, validationName, file) {
var dName = 'ngf' + name[0].toUpperCase() + name.substr(1);
var val = upload.attrGetter(dName, attr, scope, {$file: file});
if (val == null) {
val = upload.attrGetter('ngfValidate', attr, scope, {$file: file});
if (val) {
var split = (validationName || name).split('.');
val = val[split[0]];
if (split.length > 1) {
val = val && val[split[1]];
}
}
}
return val;
};

upload.validate = function (files, prevLength, ngModel, attr, scope) {
ngModel = ngModel || {};
ngModel.$ngfValidations = ngModel.$ngfValidations || [];

angular.forEach(ngModel.$ngfValidations, function (v) {
v.valid = true;
});

var attrGetter = function (name, params) {
return upload.attrGetter(name, attr, scope, params);
};

var ignoredErrors = (upload.attrGetter('ngfIgnoreInvalid', attr, scope) || '').split(' ');
var runAllValidation = upload.attrGetter('ngfRunAllValidations', attr, scope);

if (files == null || files.length === 0) {
return upload.emptyPromise({'validFiles': files, 'invalidFiles': []});
}

files = files.length === undefined ? [files] : files.slice(0);
var invalidFiles = [];

function validateSync(name, validationName, fn) {
if (files) {
var i = files.length, valid = null;
while (i--) {
var file = files[i];
if (file) {
var val = upload.getValidationAttr(attr, scope, name, validationName, file);
if (val != null) {
if (!fn(file, val, i)) {
if (ignoredErrors.indexOf(name) === -1) {
file.$error = name;
(file.$errorMessages = (file.$errorMessages || {}))[name] = true;
file.$errorParam = val;
if (invalidFiles.indexOf(file) === -1) {
invalidFiles.push(file);
}
if (!runAllValidation) {
files.splice(i, 1);
}
valid = false;
} else {
files.splice(i, 1);
}
}
}
}
}
if (valid !== null) {
ngModel.$ngfValidations.push({name: name, valid: valid});
}
}
}

validateSync('pattern', null, upload.validatePattern);
validateSync('minSize', 'size.min', function (file, val) {
return file.size + 0.1 >= upload.translateScalars(val);
});
validateSync('maxSize', 'size.max', function (file, val) {
return file.size - 0.1 <= upload.translateScalars(val);
});
var totalSize = 0;
validateSync('maxTotalSize', null, function (file, val) {
totalSize += file.size;
if (totalSize > upload.translateScalars(val)) {
files.splice(0, files.length);
return false;
}
return true;
});

validateSync('validateFn', null, function (file, r) {
return r === true || r === null || r === '';
});

if (!files.length) {
return upload.emptyPromise({'validFiles': [], 'invalidFiles': invalidFiles});
}

function validateAsync(name, validationName, type, asyncFn, fn) {
function resolveResult(defer, file, val) {
function resolveInternal(fn) {
if (fn()) {
if (ignoredErrors.indexOf(name) === -1) {
file.$error = name;
(file.$errorMessages = (file.$errorMessages || {}))[name] = true;
file.$errorParam = val;
if (invalidFiles.indexOf(file) === -1) {
invalidFiles.push(file);
}
if (!runAllValidation) {
var i = files.indexOf(file);
if (i > -1) files.splice(i, 1);
}
defer.resolve(false);
} else {
var j = files.indexOf(file);
if (j > -1) files.splice(j, 1);
defer.resolve(true);
}
} else {
defer.resolve(true);
}
}

if (val != null) {
asyncFn(file, val).then(function (d) {
resolveInternal(function () {
return !fn(d, val);
});
}, function () {
resolveInternal(function () {
return attrGetter('ngfValidateForce', {$file: file});
});
});
} else {
defer.resolve(true);
}
}

var promises = [upload.emptyPromise(true)];
if (files) {
files = files.length === undefined ? [files] : files;
angular.forEach(files, function (file) {
var defer = $q.defer();
promises.push(defer.promise);
if (type && (file.type == null || file.type.search(type) !== 0)) {
defer.resolve(true);
return;
}
if (name === 'dimensions' && upload.attrGetter('ngfDimensions', attr) != null) {
upload.imageDimensions(file).then(function (d) {
resolveResult(defer, file,
attrGetter('ngfDimensions', {$file: file, $width: d.width, $height: d.height}));
}, function () {
defer.resolve(false);
});
} else if (name === 'duration' && upload.attrGetter('ngfDuration', attr) != null) {
upload.mediaDuration(file).then(function (d) {
resolveResult(defer, file,
attrGetter('ngfDuration', {$file: file, $duration: d}));
}, function () {
defer.resolve(false);
});
} else {
resolveResult(defer, file,
upload.getValidationAttr(attr, scope, name, validationName, file));
}
});
}
var deffer = $q.defer();
$q.all(promises).then(function (values) {
var isValid = true;
for (var i = 0; i < values.length; i++) {
if (!values[i]) {
isValid = false;
break;
}
}
ngModel.$ngfValidations.push({name: name, valid: isValid});
deffer.resolve(isValid);
});
return deffer.promise;
}

var deffer = $q.defer();
var promises = [];

promises.push(validateAsync('maxHeight', 'height.max', /image/,
this.imageDimensions, function (d, val) {
return d.height <= val;
}));
promises.push(validateAsync('minHeight', 'height.min', /image/,
this.imageDimensions, function (d, val) {
return d.height >= val;
}));
promises.push(validateAsync('maxWidth', 'width.max', /image/,
this.imageDimensions, function (d, val) {
return d.width <= val;
}));
promises.push(validateAsync('minWidth', 'width.min', /image/,
this.imageDimensions, function (d, val) {
return d.width >= val;
}));
promises.push(validateAsync('dimensions', null, /image/,
function (file, val) {
return upload.emptyPromise(val);
}, function (r) {
return r;
}));
promises.push(validateAsync('ratio', null, /image/,
this.imageDimensions, function (d, val) {
var split = val.toString().split(','), valid = false;
for (var i = 0; i < split.length; i++) {
if (Math.abs((d.width / d.height) - upload.ratioToFloat(split[i])) < 0.01) {
valid = true;
}
}
return valid;
}));
promises.push(validateAsync('maxRatio', 'ratio.max', /image/,
this.imageDimensions, function (d, val) {
return (d.width / d.height) - upload.ratioToFloat(val) < 0.0001;
}));
promises.push(validateAsync('minRatio', 'ratio.min', /image/,
this.imageDimensions, function (d, val) {
return (d.width / d.height) - upload.ratioToFloat(val) > -0.0001;
}));
promises.push(validateAsync('maxDuration', 'duration.max', /audio|video/,
this.mediaDuration, function (d, val) {
return d <= upload.translateScalars(val);
}));
promises.push(validateAsync('minDuration', 'duration.min', /audio|video/,
this.mediaDuration, function (d, val) {
return d >= upload.translateScalars(val);
}));
promises.push(validateAsync('duration', null, /audio|video/,
function (file, val) {
return upload.emptyPromise(val);
}, function (r) {
return r;
}));

promises.push(validateAsync('validateAsyncFn', null, null,
function (file, val) {
return val;
}, function (r) {
return r === true || r === null || r === '';
}));

$q.all(promises).then(function () {

if (runAllValidation) {
for (var i = 0; i < files.length; i++) {
var file = files[i];
if (file.$error) {
files.splice(i--, 1);
}
}
}

runAllValidation = false;
validateSync('maxFiles', null, function (file, val, i) {
return prevLength + i < val;
});

deffer.resolve({'validFiles': files, 'invalidFiles': invalidFiles});
});
return deffer.promise;
};

upload.imageDimensions = function (file) {
if (file.$ngfWidth && file.$ngfHeight) {
var d = $q.defer();
$timeout(function () {
d.resolve({width: file.$ngfWidth, height: file.$ngfHeight});
});
return d.promise;
}
if (file.$ngfDimensionPromise) return file.$ngfDimensionPromise;

var deferred = $q.defer();
$timeout(function () {
if (file.type.indexOf('image') !== 0) {
deferred.reject('not image');
return;
}
upload.dataUrl(file).then(function (dataUrl) {
var img = angular.element('<img>').attr('src', dataUrl)
.css('visibility', 'hidden').css('position', 'fixed')
.css('max-width', 'none !important').css('max-height', 'none !important');

function success() {
var width = img[0].naturalWidth || img[0].clientWidth;
var height = img[0].naturalHeight || img[0].clientHeight;
img.remove();
file.$ngfWidth = width;
file.$ngfHeight = height;
deferred.resolve({width: width, height: height});
}

function error() {
img.remove();
deferred.reject('load error');
}

img.on('load', success);
img.on('error', error);

var secondsCounter = 0;
function checkLoadErrorInCaseOfNoCallback() {
$timeout(function () {
if (img[0].parentNode) {
if (img[0].clientWidth) {
success();
} else if (secondsCounter++ > 10) {
error();
} else {
checkLoadErrorInCaseOfNoCallback();
}
}
}, 1000);
}

checkLoadErrorInCaseOfNoCallback();

angular.element(document.getElementsByTagName('body')[0]).append(img);
}, function () {
deferred.reject('load error');
});
});

file.$ngfDimensionPromise = deferred.promise;
file.$ngfDimensionPromise['finally'](function () {
delete file.$ngfDimensionPromise;
});
return file.$ngfDimensionPromise;
};

upload.mediaDuration = function (file) {
if (file.$ngfDuration) {
var d = $q.defer();
$timeout(function () {
d.resolve(file.$ngfDuration);
});
return d.promise;
}
if (file.$ngfDurationPromise) return file.$ngfDurationPromise;

var deferred = $q.defer();
$timeout(function () {
if (file.type.indexOf('audio') !== 0 && file.type.indexOf('video') !== 0) {
deferred.reject('not media');
return;
}
upload.dataUrl(file).then(function (dataUrl) {
var el = angular.element(file.type.indexOf('audio') === 0 ? '<audio>' : '<video>')
.attr('src', dataUrl).css('visibility', 'none').css('position', 'fixed');

function success() {
var duration = el[0].duration;
file.$ngfDuration = duration;
el.remove();
deferred.resolve(duration);
}

function error() {
el.remove();
deferred.reject('load error');
}

el.on('loadedmetadata', success);
el.on('error', error);
var count = 0;

function checkLoadError() {
$timeout(function () {
if (el[0].parentNode) {
if (el[0].duration) {
success();
} else if (count > 10) {
error();
} else {
checkLoadError();
}
}
}, 1000);
}

checkLoadError();

angular.element(document.body).append(el);
}, function () {
deferred.reject('load error');
});
});

file.$ngfDurationPromise = deferred.promise;
file.$ngfDurationPromise['finally'](function () {
delete file.$ngfDurationPromise;
});
return file.$ngfDurationPromise;
};
return upload;
}
]);

ngFileUpload.service('UploadResize', ['UploadValidate', '$q', function (UploadValidate, $q) {
var upload = UploadValidate;

/**
* Conserve aspect ratio of the original region. Useful when shrinking/enlarging
* images to fit into a certain area.
* Source: http://stackoverflow.com/a/14731922
*
* @param {Number} srcWidth Source area width
* @param {Number} srcHeight Source area height
* @param {Number} maxWidth Nestable area maximum available width
* @param {Number} maxHeight Nestable area maximum available height
* @return {Object} { width, height }
*/
var calculateAspectRatioFit = function (srcWidth, srcHeight, maxWidth, maxHeight, centerCrop) {
var ratio = centerCrop ? Math.max(maxWidth / srcWidth, maxHeight / srcHeight) :
Math.min(maxWidth / srcWidth, maxHeight / srcHeight);
return {
width: srcWidth * ratio, height: srcHeight * ratio,
marginX: srcWidth * ratio - maxWidth, marginY: srcHeight * ratio - maxHeight
};
};

// Extracted from https://github.com/romelgomez/angular-firebase-image-upload/blob/master/app/scripts/fileUpload.js#L89
var resize = function (imagen, width, height, quality, type, ratio, centerCrop, resizeIf) {
var deferred = $q.defer();
var canvasElement = document.createElement('canvas');
var imageElement = document.createElement('img');
imageElement.setAttribute('style', 'visibility:hidden;position:fixed;z-index:-100000');
document.body.appendChild(imageElement);

imageElement.onload = function () {
var imgWidth = imageElement.width, imgHeight = imageElement.height;
imageElement.parentNode.removeChild(imageElement);
if (resizeIf != null && resizeIf(imgWidth, imgHeight) === false) {
deferred.reject('resizeIf');
return;
}
try {
if (ratio) {
var ratioFloat = upload.ratioToFloat(ratio);
var imgRatio = imgWidth / imgHeight;
if (imgRatio < ratioFloat) {
width = imgWidth;
height = width / ratioFloat;
} else {
height = imgHeight;
width = height * ratioFloat;
}
}
if (!width) {
width = imgWidth;
}
if (!height) {
height = imgHeight;
}
var dimensions = calculateAspectRatioFit(imgWidth, imgHeight, width, height, centerCrop);
canvasElement.width = Math.min(dimensions.width, width);
canvasElement.height = Math.min(dimensions.height, height);
var context = canvasElement.getContext('2d');
context.drawImage(imageElement,
Math.min(0, -dimensions.marginX / 2), Math.min(0, -dimensions.marginY / 2),
dimensions.width, dimensions.height);
deferred.resolve(canvasElement.toDataURL(type || 'image/WebP', quality || 0.934));
} catch (e) {
deferred.reject(e);
}
};
imageElement.onerror = function () {
imageElement.parentNode.removeChild(imageElement);
deferred.reject();
};
imageElement.src = imagen;
return deferred.promise;
};

upload.dataUrltoBlob = function (dataurl, name, origSize) {
var arr = dataurl.split(','), mime = arr[0].match(/:(.*?);/)[1],
bstr = atob(arr[1]), n = bstr.length, u8arr = new Uint8Array(n);
while (n--) {
u8arr[n] = bstr.charCodeAt(n);
}
var blob = new window.Blob([u8arr], {type: mime});
blob.name = name;
blob.$ngfOrigSize = origSize;
return blob;
};

upload.isResizeSupported = function () {
var elem = document.createElement('canvas');
return window.atob && elem.getContext && elem.getContext('2d') && window.Blob;
};

if (upload.isResizeSupported()) {
// add name getter to the blob constructor prototype
Object.defineProperty(window.Blob.prototype, 'name', {
get: function () {
return this.$ngfName;
},
set: function (v) {
this.$ngfName = v;
},
configurable: true
});
}

upload.resize = function (file, options) {
if (file.type.indexOf('image') !== 0) return upload.emptyPromise(file);

var deferred = $q.defer();
upload.dataUrl(file, true).then(function (url) {
resize(url, options.width, options.height, options.quality, options.type || file.type,
options.ratio, options.centerCrop, options.resizeIf)
.then(function (dataUrl) {
if (file.type === 'image/jpeg' && options.restoreExif !== false) {
try {
dataUrl = upload.restoreExif(url, dataUrl);
} catch (e) {
setTimeout(function () {throw e;}, 1);
}
}
try {
var blob = upload.dataUrltoBlob(dataUrl, file.name, file.size);
deferred.resolve(blob);
} catch (e) {
deferred.reject(e);
}
}, function (r) {
if (r === 'resizeIf') {
deferred.resolve(file);
}
deferred.reject(r);
});
}, function (e) {
deferred.reject(e);
});
return deferred.promise;
};

return upload;
}]);

(function () {
ngFileUpload.directive('ngfDrop', ['$parse', '$timeout', '$window', 'Upload', '$http', '$q',
function ($parse, $timeout, $window, Upload, $http, $q) {
return {
restrict: 'AEC',
require: '?ngModel',
link: function (scope, elem, attr, ngModel) {
linkDrop(scope, elem, attr, ngModel, $parse, $timeout, $window, Upload, $http, $q);
}
};
}]);

ngFileUpload.directive('ngfNoFileDrop', function () {
return function (scope, elem) {
if (dropAvailable()) elem.css('display', 'none');
};
});

ngFileUpload.directive('ngfDropAvailable', ['$parse', '$timeout', 'Upload', function ($parse, $timeout, Upload) {
return function (scope, elem, attr) {
if (dropAvailable()) {
var model = $parse(Upload.attrGetter('ngfDropAvailable', attr));
$timeout(function () {
model(scope);
if (model.assign) {
model.assign(scope, true);
}
});
}
};
}]);

function linkDrop(scope, elem, attr, ngModel, $parse, $timeout, $window, upload, $http, $q) {
var available = dropAvailable();

var attrGetter = function (name, scope, params) {
return upload.attrGetter(name, attr, scope, params);
};

if (attrGetter('dropAvailable')) {
$timeout(function () {
if (scope[attrGetter('dropAvailable')]) {
scope[attrGetter('dropAvailable')].value = available;
} else {
scope[attrGetter('dropAvailable')] = available;
}
});
}
if (!available) {
if (attrGetter('ngfHideOnDropNotAvailable', scope) === true) {
elem.css('display', 'none');
}
return;
}

function isDisabled() {
return elem.attr('disabled') || attrGetter('ngfDropDisabled', scope);
}

if (attrGetter('ngfSelect') == null) {
upload.registerModelChangeValidator(ngModel, attr, scope);
}

var leaveTimeout = null;
var stopPropagation = $parse(attrGetter('ngfStopPropagation'));
var dragOverDelay = 1;
var actualDragOverClass;

elem[0].addEventListener('dragover', function (evt) {
if (isDisabled() || !upload.shouldUpdateOn('drop', attr, scope)) return;
evt.preventDefault();
if (stopPropagation(scope)) evt.stopPropagation();
// handling dragover events from the Chrome download bar
if (navigator.userAgent.indexOf('Chrome') > -1) {
var b = evt.dataTransfer.effectAllowed;
evt.dataTransfer.dropEffect = ('move' === b || 'linkMove' === b) ? 'move' : 'copy';
}
$timeout.cancel(leaveTimeout);
if (!actualDragOverClass) {
actualDragOverClass = 'C';
calculateDragOverClass(scope, attr, evt, function (clazz) {
actualDragOverClass = clazz;
elem.addClass(actualDragOverClass);
attrGetter('ngfDrag', scope, {$isDragging: true, $class: actualDragOverClass, $event: evt});
});
}
}, false);
elem[0].addEventListener('dragenter', function (evt) {
if (isDisabled() || !upload.shouldUpdateOn('drop', attr, scope)) return;
evt.preventDefault();
if (stopPropagation(scope)) evt.stopPropagation();
}, false);
elem[0].addEventListener('dragleave', function (evt) {
if (isDisabled() || !upload.shouldUpdateOn('drop', attr, scope)) return;
evt.preventDefault();
if (stopPropagation(scope)) evt.stopPropagation();
leaveTimeout = $timeout(function () {
if (actualDragOverClass) elem.removeClass(actualDragOverClass);
actualDragOverClass = null;
attrGetter('ngfDrag', scope, {$isDragging: false, $event: evt});
}, dragOverDelay || 100);
}, false);
elem[0].addEventListener('drop', function (evt) {
if (isDisabled() || !upload.shouldUpdateOn('drop', attr, scope)) return;
evt.preventDefault();
if (stopPropagation(scope)) evt.stopPropagation();
if (actualDragOverClass) elem.removeClass(actualDragOverClass);
actualDragOverClass = null;
extractFilesAndUpdateModel(evt.dataTransfer, evt, 'dropUrl');
}, false);
elem[0].addEventListener('paste', function (evt) {
if (navigator.userAgent.toLowerCase().indexOf('firefox') > -1 &&
attrGetter('ngfEnableFirefoxPaste', scope)) {
evt.preventDefault();
}
if (isDisabled() || !upload.shouldUpdateOn('paste', attr, scope)) return;
extractFilesAndUpdateModel(evt.clipboardData || evt.originalEvent.clipboardData, evt, 'pasteUrl');
}, false);

if (navigator.userAgent.toLowerCase().indexOf('firefox') > -1 &&
attrGetter('ngfEnableFirefoxPaste', scope)) {
elem.attr('contenteditable', true);
elem.on('keypress', function (e) {
if (!e.metaKey && !e.ctrlKey) {
e.preventDefault();
}
});
}

function extractFilesAndUpdateModel(source, evt, updateOnType) {
if (!source) return;
// html needs to be calculated on the same process otherwise the data will be wiped
// after promise resolve or setTimeout.
var html;
try {
html = source && source.getData && source.getData('text/html');
} catch (e) {/* Fix IE11 that throw error calling getData */
}
extractFiles(source.items, source.files, attrGetter('ngfAllowDir', scope) !== false,
attrGetter('multiple') || attrGetter('ngfMultiple', scope)).then(function (files) {
if (files.length) {
updateModel(files, evt);
} else {
extractFilesFromHtml(updateOnType, html).then(function (files) {
updateModel(files, evt);
});
}
});
}

function updateModel(files, evt) {
upload.updateModel(ngModel, attr, scope, attrGetter('ngfChange') || attrGetter('ngfDrop'), files, evt);
}

function extractFilesFromHtml(updateOn, html) {
if (!upload.shouldUpdateOn(updateOn, attr, scope) || typeof html !== 'string') return upload.rejectPromise([]);
var urls = [];
html.replace(/<(img src|img [^>]* src) *=\"([^\"]*)\"/gi, function (m, n, src) {
urls.push(src);
});
var promises = [], files = [];
if (urls.length) {
angular.forEach(urls, function (url) {
promises.push(upload.urlToBlob(url).then(function (blob) {
files.push(blob);
}));
});
var defer = $q.defer();
$q.all(promises).then(function () {
defer.resolve(files);
}, function (e) {
defer.reject(e);
});
return defer.promise;
}
return upload.emptyPromise();
}

function calculateDragOverClass(scope, attr, evt, callback) {
var obj = attrGetter('ngfDragOverClass', scope, {$event: evt}), dClass = 'dragover';
if (angular.isString(obj)) {
dClass = obj;
} else if (obj) {
if (obj.delay) dragOverDelay = obj.delay;
if (obj.accept || obj.reject) {
var items = evt.dataTransfer.items;
if (items == null || !items.length) {
dClass = obj.accept;
} else {
var pattern = obj.pattern || attrGetter('ngfPattern', scope, {$event: evt});
var len = items.length;
while (len--) {
if (!upload.validatePattern(items[len], pattern)) {
dClass = obj.reject;
break;
} else {
dClass = obj.accept;
}
}
}
}
}
callback(dClass);
}

function extractFiles(items, fileList, allowDir, multiple) {
var maxFiles = upload.getValidationAttr(attr, scope, 'maxFiles');
if (maxFiles == null) {
maxFiles = Number.MAX_VALUE;
}
var maxTotalSize = upload.getValidationAttr(attr, scope, 'maxTotalSize');
if (maxTotalSize == null) {
maxTotalSize = Number.MAX_VALUE;
}
var includeDir = attrGetter('ngfIncludeDir', scope);
var files = [], totalSize = 0;

function traverseFileTree(entry, path) {
var defer = $q.defer();
if (entry != null) {
if (entry.isDirectory) {
var promises = [upload.emptyPromise()];
if (includeDir) {
var file = {type: 'directory'};
file.name = file.path = (path || '') + entry.name;
files.push(file);
}
var dirReader = entry.createReader();
var entries = [];
var readEntries = function () {
dirReader.readEntries(function (results) {
try {
if (!results.length) {
angular.forEach(entries.slice(0), function (e) {
if (files.length <= maxFiles && totalSize <= maxTotalSize) {
promises.push(traverseFileTree(e, (path ? path : '') + entry.name + '/'));
}
});
$q.all(promises).then(function () {
defer.resolve();
}, function (e) {
defer.reject(e);
});
} else {
entries = entries.concat(Array.prototype.slice.call(results || [], 0));
readEntries();
}
} catch (e) {
defer.reject(e);
}
}, function (e) {
defer.reject(e);
});
};
readEntries();
} else {
entry.file(function (file) {
try {
file.path = (path ? path : '') + file.name;
if (includeDir) {
file = upload.rename(file, file.path);
}
files.push(file);
totalSize += file.size;
defer.resolve();
} catch (e) {
defer.reject(e);
}
}, function (e) {
defer.reject(e);
});
}
}
return defer.promise;
}

var promises = [upload.emptyPromise()];

if (items && items.length > 0 && $window.location.protocol !== 'file:') {
for (var i = 0; i < items.length; i++) {
if (items[i].webkitGetAsEntry && items[i].webkitGetAsEntry() && items[i].webkitGetAsEntry().isDirectory) {
var entry = items[i].webkitGetAsEntry();
if (entry.isDirectory && !allowDir) {
continue;
}
if (entry != null) {
promises.push(traverseFileTree(entry));
}
} else {
var f = items[i].getAsFile();
if (f != null) {
files.push(f);
totalSize += f.size;
}
}
if (files.length > maxFiles || totalSize > maxTotalSize ||
(!multiple && files.length > 0)) break;
}
} else {
if (fileList != null) {
for (var j = 0; j < fileList.length; j++) {
var file = fileList.item(j);
if (file.type || file.size > 0) {
files.push(file);
totalSize += file.size;
}
if (files.length > maxFiles || totalSize > maxTotalSize ||
(!multiple && files.length > 0)) break;
}
}
}

var defer = $q.defer();
$q.all(promises).then(function () {
if (!multiple && !includeDir && files.length) {
var i = 0;
while (files[i] && files[i].type === 'directory') i++;
defer.resolve([files[i]]);
} else {
defer.resolve(files);
}
}, function (e) {
defer.reject(e);
});

return defer.promise;
}
}

function dropAvailable() {
var div = document.createElement('div');
return ('draggable' in div) && ('ondrop' in div) && !/Edge\/12./i.test(navigator.userAgent);
}

})();

// customized version of https://github.com/exif-js/exif-js
ngFileUpload.service('UploadExif', ['UploadResize', '$q', function (UploadResize, $q) {
var upload = UploadResize;

upload.isExifSupported = function () {
return window.FileReader && new FileReader().readAsArrayBuffer && upload.isResizeSupported();
};

function applyTransform(ctx, orientation, width, height) {
switch (orientation) {
case 2:
return ctx.transform(-1, 0, 0, 1, width, 0);
case 3:
return ctx.transform(-1, 0, 0, -1, width, height);
case 4:
return ctx.transform(1, 0, 0, -1, 0, height);
case 5:
return ctx.transform(0, 1, 1, 0, 0, 0);
case 6:
return ctx.transform(0, 1, -1, 0, height, 0);
case 7:
return ctx.transform(0, -1, -1, 0, height, width);
case 8:
return ctx.transform(0, -1, 1, 0, 0, width);
}
}

upload.readOrientation = function (file) {
var defer = $q.defer();
var reader = new FileReader();
var slicedFile = file.slice ? file.slice(0, 64 * 1024) : file;
reader.readAsArrayBuffer(slicedFile);
reader.onerror = function (e) {
return defer.reject(e);
};
reader.onload = function (e) {
var result = {orientation: 1};
var view = new DataView(this.result);
if (view.getUint16(0, false) !== 0xFFD8) return defer.resolve(result);

var length = view.byteLength,
offset = 2;
while (offset < length) {
var marker = view.getUint16(offset, false);
offset += 2;
if (marker === 0xFFE1) {
if (view.getUint32(offset += 2, false) !== 0x45786966) return defer.resolve(result);

var little = view.getUint16(offset += 6, false) === 0x4949;
offset += view.getUint32(offset + 4, little);
var tags = view.getUint16(offset, little);
offset += 2;
for (var i = 0; i < tags; i++)
if (view.getUint16(offset + (i * 12), little) === 0x0112) {
var orientation = view.getUint16(offset + (i * 12) + 8, little);
if (orientation >= 2 && orientation <= 8) {
view.setUint16(offset + (i * 12) + 8, 1, little);
result.fixedArrayBuffer = e.target.result;
}
result.orientation = orientation;
return defer.resolve(result);
}
} else if ((marker & 0xFF00) !== 0xFF00) break;
else offset += view.getUint16(offset, false);
}
return defer.resolve(result);
};
return defer.promise;
};

function arrayBufferToBase64(buffer) {
var binary = '';
var bytes = new Uint8Array(buffer);
var len = bytes.byteLength;
for (var i = 0; i < len; i++) {
binary += String.fromCharCode(bytes[i]);
}
return window.btoa(binary);
}

upload.applyExifRotation = function (file) {
if (file.type.indexOf('image/jpeg') !== 0) {
return upload.emptyPromise(file);
}

var deferred = $q.defer();
upload.readOrientation(file).then(function (result) {
if (result.orientation < 2 || result.orientation > 8) {
return deferred.resolve(file);
}
upload.dataUrl(file, true).then(function (url) {
var canvas = document.createElement('canvas');
var img = document.createElement('img');

img.onload = function () {
try {
canvas.width = result.orientation > 4 ? img.height : img.width;
canvas.height = result.orientation > 4 ? img.width : img.height;
var ctx = canvas.getContext('2d');
applyTransform(ctx, result.orientation, img.width, img.height);
ctx.drawImage(img, 0, 0);
var dataUrl = canvas.toDataURL(file.type || 'image/WebP', 0.934);
dataUrl = upload.restoreExif(arrayBufferToBase64(result.fixedArrayBuffer), dataUrl);
var blob = upload.dataUrltoBlob(dataUrl, file.name);
deferred.resolve(blob);
} catch (e) {
return deferred.reject(e);
}
};
img.onerror = function () {
deferred.reject();
};
img.src = url;
}, function (e) {
deferred.reject(e);
});
}, function (e) {
deferred.reject(e);
});
return deferred.promise;
};

upload.restoreExif = function (orig, resized) {
var ExifRestorer = {};

ExifRestorer.KEY_STR = 'ABCDEFGHIJKLMNOP' +
'QRSTUVWXYZabcdef' +
'ghijklmnopqrstuv' +
'wxyz0123456789+/' +
'=';

ExifRestorer.encode64 = function (input) {
var output = '',
chr1, chr2, chr3 = '',
enc1, enc2, enc3, enc4 = '',
i = 0;

do {
chr1 = input[i++];
chr2 = input[i++];
chr3 = input[i++];

enc1 = chr1 >> 2;
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
enc4 = chr3 & 63;

if (isNaN(chr2)) {
enc3 = enc4 = 64;
} else if (isNaN(chr3)) {
enc4 = 64;
}

output = output +
this.KEY_STR.charAt(enc1) +
this.KEY_STR.charAt(enc2) +
this.KEY_STR.charAt(enc3) +
this.KEY_STR.charAt(enc4);
chr1 = chr2 = chr3 = '';
enc1 = enc2 = enc3 = enc4 = '';
} while (i < input.length);

return output;
};

ExifRestorer.restore = function (origFileBase64, resizedFileBase64) {
if (origFileBase64.match('data:image/jpeg;base64,')) {
origFileBase64 = origFileBase64.replace('data:image/jpeg;base64,', '');
}

var rawImage = this.decode64(origFileBase64);
var segments = this.slice2Segments(rawImage);

var image = this.exifManipulation(resizedFileBase64, segments);

return 'data:image/jpeg;base64,' + this.encode64(image);
};


ExifRestorer.exifManipulation = function (resizedFileBase64, segments) {
var exifArray = this.getExifArray(segments),
newImageArray = this.insertExif(resizedFileBase64, exifArray);
return new Uint8Array(newImageArray);
};


ExifRestorer.getExifArray = function (segments) {
var seg;
for (var x = 0; x < segments.length; x++) {
seg = segments[x];
if (seg[0] === 255 & seg[1] === 225) //(ff e1)
{
return seg;
}
}
return [];
};


ExifRestorer.insertExif = function (resizedFileBase64, exifArray) {
var imageData = resizedFileBase64.replace('data:image/jpeg;base64,', ''),
buf = this.decode64(imageData),
separatePoint = buf.indexOf(255, 3),
mae = buf.slice(0, separatePoint),
ato = buf.slice(separatePoint),
array = mae;

array = array.concat(exifArray);
array = array.concat(ato);
return array;
};


ExifRestorer.slice2Segments = function (rawImageArray) {
var head = 0,
segments = [];

while (1) {
if (rawImageArray[head] === 255 & rawImageArray[head + 1] === 218) {
break;
}
if (rawImageArray[head] === 255 & rawImageArray[head + 1] === 216) {
head += 2;
}
else {
var length = rawImageArray[head + 2] * 256 + rawImageArray[head + 3],
endPoint = head + length + 2,
seg = rawImageArray.slice(head, endPoint);
segments.push(seg);
head = endPoint;
}
if (head > rawImageArray.length) {
break;
}
}

return segments;
};


ExifRestorer.decode64 = function (input) {
var chr1, chr2, chr3 = '',
enc1, enc2, enc3, enc4 = '',
i = 0,
buf = [];

// remove all characters that are not A-Z, a-z, 0-9, +, /, or =
var base64test = /[^A-Za-z0-9\+\/\=]/g;
if (base64test.exec(input)) {
console.log('There were invalid base64 characters in the input text.\n' +
'Valid base64 characters are A-Z, a-z, 0-9, ' + ', ' / ',and "="\n' +
'Expect errors in decoding.');
}
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, '');

do {
enc1 = this.KEY_STR.indexOf(input.charAt(i++));
enc2 = this.KEY_STR.indexOf(input.charAt(i++));
enc3 = this.KEY_STR.indexOf(input.charAt(i++));
enc4 = this.KEY_STR.indexOf(input.charAt(i++));

chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;

buf.push(chr1);

if (enc3 !== 64) {
buf.push(chr2);
}
if (enc4 !== 64) {
buf.push(chr3);
}

chr1 = chr2 = chr3 = '';
enc1 = enc2 = enc3 = enc4 = '';

} while (i < input.length);

return buf;
};

return ExifRestorer.restore(orig, resized); //<= EXIF
};

return upload;
}]);

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