538 lines
14 KiB
JavaScript
538 lines
14 KiB
JavaScript
/* global textsecure: false */
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/* global Whisper: false */
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/* global i18n: false */
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/* global loadImage: false */
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/* global Backbone: false */
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/* global _: false */
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/* global Signal: false */
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// eslint-disable-next-line func-names
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(function() {
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'use strict';
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window.Whisper = window.Whisper || {};
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const { MIME, VisualAttachment } = window.Signal.Types;
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Whisper.FileSizeToast = Whisper.ToastView.extend({
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templateName: 'file-size-modal',
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render_attributes() {
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return {
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'file-size-warning': i18n('fileSizeWarning'),
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limit: this.model.limit,
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units: this.model.units,
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};
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},
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});
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Whisper.UnableToLoadToast = Whisper.ToastView.extend({
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render_attributes() {
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return { toastMessage: i18n('unableToLoadAttachment') };
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},
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});
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Whisper.DangerousFileTypeToast = Whisper.ToastView.extend({
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template: i18n('dangerousFileType'),
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});
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Whisper.OneNonImageAtATimeToast = Whisper.ToastView.extend({
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template: i18n('oneNonImageAtATimeToast'),
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});
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Whisper.CannotMixImageAndNonImageAttachmentsToast = Whisper.ToastView.extend({
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template: i18n('cannotMixImageAdnNonImageAttachments'),
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});
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Whisper.MaxAttachmentsToast = Whisper.ToastView.extend({
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template: i18n('maximumAttachments'),
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});
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Whisper.FileInputView = Backbone.View.extend({
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tagName: 'span',
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className: 'file-input',
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initialize() {
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this.attachments = [];
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this.attachmentListView = new Whisper.ReactWrapperView({
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el: this.el,
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Component: window.Signal.Components.AttachmentList,
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props: this.getPropsForAttachmentList(),
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});
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},
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remove() {
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if (this.attachmentListView) {
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this.attachmentListView.remove();
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}
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if (this.captionEditorView) {
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this.captionEditorView.remove();
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}
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Backbone.View.prototype.remove.call(this);
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},
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render() {
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this.attachmentListView.update(this.getPropsForAttachmentList());
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this.trigger('staged-attachments-changed');
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},
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getPropsForAttachmentList() {
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const { attachments } = this;
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// We never want to display voice notes in our attachment list
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if (_.any(attachments, attachment => Boolean(attachment.isVoiceNote))) {
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return {
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attachments: [],
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};
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}
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return {
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attachments,
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onAddAttachment: this.onAddAttachment.bind(this),
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onClickAttachment: this.onClickAttachment.bind(this),
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onCloseAttachment: this.onCloseAttachment.bind(this),
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onClose: this.onClose.bind(this),
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};
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},
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onClickAttachment(attachment) {
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const getProps = () => ({
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url: attachment.videoUrl || attachment.url,
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caption: attachment.caption,
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attachment,
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onSave,
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});
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const onSave = caption => {
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// eslint-disable-next-line no-param-reassign
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attachment.caption = caption;
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this.captionEditorView.remove();
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Signal.Backbone.Views.Lightbox.hide();
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this.render();
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};
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this.captionEditorView = new Whisper.ReactWrapperView({
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className: 'attachment-list-wrapper',
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Component: window.Signal.Components.CaptionEditor,
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props: getProps(),
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onClose: () => Signal.Backbone.Views.Lightbox.hide(),
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});
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Signal.Backbone.Views.Lightbox.show(this.captionEditorView.el);
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},
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onCloseAttachment(attachment) {
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this.attachments = _.without(this.attachments, attachment);
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this.render();
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},
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onAddAttachment() {
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this.trigger('choose-attachment');
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},
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onClose() {
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this.attachments = [];
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this.render();
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},
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// These event handlers are called by ConversationView, which listens for these events
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onDragOver(e) {
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if (e.originalEvent.dataTransfer.types[0] !== 'Files') {
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return;
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}
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e.stopPropagation();
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e.preventDefault();
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this.$el.addClass('dropoff');
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},
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onDragLeave(e) {
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if (e.originalEvent.dataTransfer.types[0] !== 'Files') {
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return;
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}
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e.stopPropagation();
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e.preventDefault();
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this.$el.removeClass('dropoff');
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},
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async onDrop(e) {
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if (e.originalEvent.dataTransfer.types[0] !== 'Files') {
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return;
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}
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e.stopPropagation();
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e.preventDefault();
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const { files } = e.originalEvent.dataTransfer;
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for (let i = 0, max = files.length; i < max; i += 1) {
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const file = files[i];
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// eslint-disable-next-line no-await-in-loop
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await this.maybeAddAttachment(file);
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}
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this.$el.removeClass('dropoff');
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},
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onPaste(e) {
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const { items } = e.originalEvent.clipboardData;
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let imgBlob = null;
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for (let i = 0; i < items.length; i += 1) {
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if (items[i].type.split('/')[0] === 'image') {
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imgBlob = items[i].getAsFile();
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}
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}
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if (imgBlob !== null) {
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const file = imgBlob;
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this.maybeAddAttachment(file);
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e.stopPropagation();
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e.preventDefault();
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}
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},
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// Public interface
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hasFiles() {
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return this.attachments.length > 0;
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},
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async getFiles() {
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const files = await Promise.all(
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this.attachments.map(attachment => this.getFile(attachment))
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);
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this.clearAttachments();
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return files;
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},
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clearAttachments() {
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this.attachments.forEach(attachment => {
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if (attachment.url) {
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URL.revokeObjectURL(attachment.url);
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}
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if (attachment.videoUrl) {
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URL.revokeObjectURL(attachment.videoUrl);
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}
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});
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this.attachments = [];
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this.render();
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this.$el.trigger('force-resize');
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},
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// Show errors
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showLoadFailure() {
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const toast = new Whisper.UnableToLoadToast();
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toast.$el.insertAfter(this.$el);
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toast.render();
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},
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showDangerousError() {
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const toast = new Whisper.DangerousFileTypeToast();
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toast.$el.insertAfter(this.$el);
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toast.render();
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},
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showFileSizeError({ limit, units, u }) {
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const toast = new Whisper.FileSizeToast({
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model: { limit, units: units[u] },
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});
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toast.$el.insertAfter(this.$el);
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toast.render();
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},
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showCannotMixError() {
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const toast = new Whisper.CannotMixImageAndNonImageAttachmentsToast();
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toast.$el.insertAfter(this.$el);
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toast.render();
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},
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showMultipleNonImageError() {
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const toast = new Whisper.OneNonImageAtATimeToast();
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toast.$el.insertAfter(this.$el);
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toast.render();
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},
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showMaximumAttachmentsError() {
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const toast = new Whisper.MaxAttachmentsToast();
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toast.$el.insertAfter(this.$el);
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toast.render();
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},
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// Housekeeping
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addAttachment(attachment) {
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if (attachment.isVoiceNote && this.attachments.length > 0) {
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throw new Error('A voice note cannot be sent with other attachments');
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}
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this.attachments.push(attachment);
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this.render();
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},
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async maybeAddAttachment(file) {
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if (!file) {
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return;
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}
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const fileName = file.name;
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const contentType = file.type;
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if (window.Signal.Util.isFileDangerous(fileName)) {
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this.showDangerousError();
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return;
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}
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if (this.attachments.length >= 32) {
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this.showMaximumAttachmentsError();
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return;
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}
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const haveNonImage = _.any(
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this.attachments,
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attachment => !MIME.isImage(attachment.contentType)
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);
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// You can't add another attachment if you already have a non-image staged
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if (haveNonImage) {
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this.showMultipleNonImageError();
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return;
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}
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// You can't add a non-image attachment if you already have attachments staged
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if (!MIME.isImage(contentType) && this.attachments.length > 0) {
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this.showCannotMixError();
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return;
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}
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const renderVideoPreview = async () => {
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const objectUrl = URL.createObjectURL(file);
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try {
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const type = 'image/png';
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const thumbnail = await VisualAttachment.makeVideoScreenshot({
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objectUrl,
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contentType: type,
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logger: window.log,
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});
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const data = await VisualAttachment.blobToArrayBuffer(thumbnail);
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const url = Signal.Util.arrayBufferToObjectURL({
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data,
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type,
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});
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this.addAttachment({
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file,
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size: file.size,
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fileName,
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contentType,
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videoUrl: objectUrl,
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url,
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});
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} catch (error) {
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URL.revokeObjectURL(objectUrl);
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}
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};
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const renderImagePreview = async () => {
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if (!MIME.isJPEG(contentType)) {
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const url = URL.createObjectURL(file);
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if (!url) {
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throw new Error('Failed to create object url for image!');
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}
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this.addAttachment({
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file,
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size: file.size,
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fileName,
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contentType,
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url,
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});
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return;
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}
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const url = await window.autoOrientImage(file);
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this.addAttachment({
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file,
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size: file.size,
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fileName,
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contentType,
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url,
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});
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};
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try {
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const blob = await this.autoScale({
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contentType,
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file,
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});
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let limitKb = 1000000;
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const blobType =
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file.type === 'image/gif' ? 'gif' : contentType.split('/')[0];
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switch (blobType) {
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case 'image':
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limitKb = 6000;
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break;
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case 'gif':
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limitKb = 25000;
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break;
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case 'audio':
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limitKb = 100000;
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break;
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case 'video':
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limitKb = 100000;
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break;
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default:
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limitKb = 100000;
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break;
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}
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if ((blob.size / 1024).toFixed(4) >= limitKb) {
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const units = ['kB', 'MB', 'GB'];
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let u = -1;
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let limit = limitKb * 1000;
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do {
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limit /= 1000;
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u += 1;
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} while (limit >= 1000 && u < units.length - 1);
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this.showFileSizeError({ limit, units, u });
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return;
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}
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} catch (error) {
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window.log.error(
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'Error ensuring that image is properly sized:',
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error && error.stack ? error.stack : error
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);
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this.showLoadFailure();
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return;
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}
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try {
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if (Signal.Util.GoogleChrome.isImageTypeSupported(contentType)) {
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await renderImagePreview();
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} else if (Signal.Util.GoogleChrome.isVideoTypeSupported(contentType)) {
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await renderVideoPreview();
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} else {
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this.addAttachment({
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file,
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size: file.size,
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contentType,
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fileName,
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});
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}
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} catch (e) {
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window.log.error(
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`Was unable to generate thumbnail for file type ${contentType}`,
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e && e.stack ? e.stack : e
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);
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this.addAttachment({
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file,
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size: file.size,
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contentType,
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fileName,
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});
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}
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},
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autoScale(attachment) {
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const { contentType, file } = attachment;
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if (
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contentType.split('/')[0] !== 'image' ||
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contentType === 'image/tiff'
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) {
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// nothing to do
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return Promise.resolve(attachment);
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}
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return new Promise((resolve, reject) => {
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const url = URL.createObjectURL(file);
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const img = document.createElement('img');
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img.onerror = reject;
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img.onload = () => {
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URL.revokeObjectURL(url);
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const maxSize = 6000 * 1024;
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const maxHeight = 4096;
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const maxWidth = 4096;
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if (
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img.naturalWidth <= maxWidth &&
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img.naturalHeight <= maxHeight &&
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file.size <= maxSize
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) {
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resolve(attachment);
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return;
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}
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const gifMaxSize = 25000 * 1024;
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if (file.type === 'image/gif' && file.size <= gifMaxSize) {
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resolve(attachment);
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return;
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}
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if (file.type === 'image/gif') {
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reject(new Error('GIF is too large'));
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return;
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}
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const canvas = loadImage.scale(img, {
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canvas: true,
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maxWidth,
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maxHeight,
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});
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let quality = 0.95;
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let i = 4;
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let blob;
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do {
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i -= 1;
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blob = window.dataURLToBlobSync(
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canvas.toDataURL('image/jpeg', quality)
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);
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quality = quality * maxSize / blob.size;
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// NOTE: During testing with a large image, we observed the
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// `quality` value being > 1. Should we clamp it to [0.5, 1.0]?
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// See: https://developer.mozilla.org/en-US/docs/Web/API/HTMLCanvasElement/toBlob#Syntax
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if (quality < 0.5) {
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quality = 0.5;
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}
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} while (i > 0 && blob.size > maxSize);
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resolve({
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...attachment,
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file: blob,
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});
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};
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img.src = url;
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});
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},
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async getFile(attachment) {
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if (!attachment) {
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return Promise.resolve();
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}
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const attachmentFlags = attachment.isVoiceNote
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? textsecure.protobuf.AttachmentPointer.Flags.VOICE_MESSAGE
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: null;
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const scaled = await this.autoScale(attachment);
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const fileRead = await this.readFile(scaled);
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return {
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...fileRead,
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url: undefined,
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videoUrl: undefined,
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flags: attachmentFlags || null,
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};
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},
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readFile(attachment) {
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return new Promise((resolve, reject) => {
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const FR = new FileReader();
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FR.onload = e => {
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resolve({
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...attachment,
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data: e.target.result,
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});
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};
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FR.onerror = reject;
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FR.onabort = reject;
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FR.readAsArrayBuffer(attachment.file);
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});
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},
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});
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})();
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