109 lines
3.4 KiB
JavaScript
109 lines
3.4 KiB
JavaScript
(function () {
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'use strict';
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angular.module('ariaNg').factory('ariaNgFileService', ['$window', function ($window) {
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var isSupportFileReader = !!$window.FileReader;
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var getAllowedExtensions = function (fileFilter) {
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var extensions = [];
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if (!fileFilter || fileFilter.length < 1) {
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extensions.push(/.+$/);
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return extensions;
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}
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var fileFilters = fileFilter.split(',');
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for (var i = 0; i < fileFilters.length; i++) {
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var extension = fileFilters[i];
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if (extension === '*.*') {
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extensions.push(/.+$/);
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continue;
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}
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extension = extension.replace('.', '\\.');
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extension = extension + '$';
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extensions.push(new RegExp(extension));
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}
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return extensions;
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};
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var checkFileExtension = function (fileName, extensions) {
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if (!extensions || extensions.length < 1) {
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return true;
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}
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for (var i = 0; i < extensions.length; i++) {
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if (extensions[i].test(fileName)) {
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return true;
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}
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}
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return false;
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};
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return {
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openFileContent: function (fileFilter, successCallback, errorCallback, element) {
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if (!isSupportFileReader) {
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if (errorCallback) {
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errorCallback('Your browser does not support loading file!');
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}
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return;
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}
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var allowedExtensions = getAllowedExtensions(fileFilter);
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if (!element || !element.change) {
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element = angular.element('<input type="file" style="display: none"/>');
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}
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if (element.attr('data-ariang-file-initialized') !== 'true') {
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element.change(function () {
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if (!this.files || this.files.length < 1) {
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return;
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}
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var file = this.files[0];
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var fileName = file.name;
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if (!checkFileExtension(fileName, allowedExtensions)) {
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if (errorCallback) {
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errorCallback('The selected file type is invalid!');
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}
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return;
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}
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var reader = new FileReader();
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reader.onload = function () {
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var result = {
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fileName: fileName,
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base64Content: this.result.replace(/.*?base64,/, '')
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};
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if (successCallback) {
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successCallback(result);
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}
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};
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reader.onerror = function () {
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if (errorCallback) {
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errorCallback('Failed to load file!');
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}
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};
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reader.readAsDataURL(file);
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}).attr('data-ariang-file-initialized', 'true');
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}
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element.trigger('click');
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}
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};
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}]);
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}());
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