2016-06-30 20:14:25 +02:00
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import Component from 'ember-component';
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import computed from 'ember-computed';
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import injectService from 'ember-service/inject';
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import {htmlSafe} from 'ember-string';
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import {isBlank} from 'ember-utils';
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import run from 'ember-runloop';
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2016-05-24 14:06:59 +02:00
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import ghostPaths from 'ghost-admin/utils/ghost-paths';
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2016-05-22 10:20:02 +02:00
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import {
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isRequestEntityTooLargeError,
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isUnsupportedMediaTypeError
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} from 'ghost-admin/services/ajax';
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2016-02-26 14:25:47 +01:00
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export default Component.extend({
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tagName: 'section',
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classNames: ['gh-image-uploader'],
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classNameBindings: ['dragClass'],
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image: null,
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text: 'Upload an image',
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saveButton: true,
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dragClass: null,
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failureMessage: null,
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file: null,
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formType: 'upload',
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url: null,
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uploadPercentage: 0,
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2016-06-30 20:14:25 +02:00
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ajax: injectService(),
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config: injectService(),
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2016-02-26 14:25:47 +01:00
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// TODO: this wouldn't be necessary if the server could accept direct
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// file uploads
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formData: computed('file', function () {
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let file = this.get('file');
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let formData = new FormData();
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formData.append('uploadimage', file);
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return formData;
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}),
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progressStyle: computed('uploadPercentage', function () {
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let percentage = this.get('uploadPercentage');
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let width = '';
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if (percentage > 0) {
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width = `${percentage}%`;
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} else {
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width = '0';
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}
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2016-06-11 18:52:36 +02:00
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return htmlSafe(`width: ${width}`);
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2016-02-26 14:25:47 +01:00
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}),
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canShowUploadForm: computed('config.fileStorage', function () {
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return this.get('config.fileStorage') !== false;
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}),
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showUploadForm: computed('formType', function () {
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let canShowUploadForm = this.get('canShowUploadForm');
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let formType = this.get('formType');
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return formType === 'upload' && canShowUploadForm;
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}),
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didReceiveAttrs() {
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let image = this.get('image');
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this.set('url', image);
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},
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dragOver(event) {
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let showUploadForm = this.get('showUploadForm');
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2016-05-18 10:04:30 +02:00
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if (!event.dataTransfer) {
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return;
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}
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// this is needed to work around inconsistencies with dropping files
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// from Chrome's downloads bar
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let eA = event.dataTransfer.effectAllowed;
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event.dataTransfer.dropEffect = (eA === 'move' || eA === 'linkMove') ? 'move' : 'copy';
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event.stopPropagation();
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2016-02-26 14:25:47 +01:00
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event.preventDefault();
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if (showUploadForm) {
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this.set('dragClass', '--drag-over');
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}
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},
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dragLeave(event) {
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let showUploadForm = this.get('showUploadForm');
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event.preventDefault();
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if (showUploadForm) {
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this.set('dragClass', null);
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}
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},
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drop(event) {
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let showUploadForm = this.get('showUploadForm');
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event.preventDefault();
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this.set('dragClass', null);
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if (showUploadForm) {
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if (event.dataTransfer.files) {
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this.send('fileSelected', event.dataTransfer.files);
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}
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}
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},
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uploadStarted() {
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if (typeof this.attrs.uploadStarted === 'function') {
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this.attrs.uploadStarted();
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}
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},
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uploadProgress(event) {
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if (event.lengthComputable) {
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run(() => {
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let percentage = Math.round((event.loaded / event.total) * 100);
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this.set('uploadPercentage', percentage);
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});
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}
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},
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uploadFinished() {
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if (typeof this.attrs.uploadFinished === 'function') {
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this.attrs.uploadFinished();
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}
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},
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uploadSuccess(response) {
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this.set('url', response);
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this.send('saveUrl');
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this.send('reset');
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},
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uploadFailed(error) {
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let message;
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2016-05-22 10:20:02 +02:00
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if (isUnsupportedMediaTypeError(error)) {
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2016-02-26 14:25:47 +01:00
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message = 'The image type you uploaded is not supported. Please use .PNG, .JPG, .GIF, .SVG.';
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2016-05-22 10:20:02 +02:00
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} else if (isRequestEntityTooLargeError(error)) {
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2016-02-26 14:25:47 +01:00
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message = 'The image you uploaded was larger than the maximum file size your server allows.';
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} else if (error.errors && !isBlank(error.errors[0].message)) {
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message = error.errors[0].message;
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} else {
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message = 'Something went wrong :(';
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}
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this.set('failureMessage', message);
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},
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generateRequest() {
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let ajax = this.get('ajax');
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let formData = this.get('formData');
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let url = `${ghostPaths().apiRoot}/uploads/`;
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this.uploadStarted();
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ajax.post(url, {
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data: formData,
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processData: false,
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contentType: false,
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dataType: 'text',
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xhr: () => {
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let xhr = new window.XMLHttpRequest();
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xhr.upload.addEventListener('progress', (event) => {
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this.uploadProgress(event);
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}, false);
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return xhr;
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}
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}).then((response) => {
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let url = JSON.parse(response);
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this.uploadSuccess(url);
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}).catch((error) => {
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this.uploadFailed(error);
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}).finally(() => {
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this.uploadFinished();
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});
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},
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actions: {
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fileSelected(fileList) {
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this.set('file', fileList[0]);
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run.schedule('actions', this, function () {
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this.generateRequest();
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});
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},
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onInput(url) {
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this.set('url', url);
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if (typeof this.attrs.onInput === 'function') {
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this.attrs.onInput(url);
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}
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},
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reset() {
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this.set('file', null);
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this.set('uploadPercentage', 0);
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},
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switchForm(formType) {
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this.set('formType', formType);
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if (typeof this.attrs.formChanged === 'function') {
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run.scheduleOnce('afterRender', this, function () {
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this.attrs.formChanged(formType);
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});
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}
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},
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saveUrl() {
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let url = this.get('url');
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this.attrs.update(url);
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}
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}
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});
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