discourse/app/assets/javascripts/admin/addon/components/resumable-upload.js

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import discourseComputed, { on } from "discourse-common/utils/decorators";
import { later, schedule } from "@ember/runloop";
import Component from "@ember/component";
import I18n from "I18n";
import getURL from "discourse-common/lib/get-url";
import { iconHTML } from "discourse-common/lib/icon-library";
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/*global Resumable:true */
/**
Example usage:
{{resumable-upload
target="/admin/backups/upload"
success=(action "successAction")
error=(action "errorAction")
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uploadText="UPLOAD"
}}
**/
export default Component.extend({
tagName: "button",
classNames: ["btn", "ru"],
classNameBindings: ["isUploading"],
attributeBindings: ["translatedTitle:title"],
resumable: null,
isUploading: false,
progress: 0,
rerenderTriggers: ["isUploading", "progress"],
uploadingIcon: null,
progressBar: null,
@on("init")
_initialize() {
this.resumable = new Resumable({
target: getURL(this.target),
maxFiles: 1, // only 1 file at a time
headers: {
"X-CSRF-Token": document.querySelector("meta[name='csrf-token']")
.content,
},
});
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this.resumable.on("fileAdded", () => {
// automatically upload the selected file
this.resumable.upload();
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// mark as uploading
later(() => {
this.set("isUploading", true);
this._updateIcon();
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});
});
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this.resumable.on("fileProgress", (file) => {
// update progress
later(() => {
this.set("progress", parseInt(file.progress() * 100, 10));
this._updateProgressBar();
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});
});
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this.resumable.on("fileSuccess", (file) => {
later(() => {
// mark as not uploading anymore
this._reset();
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// fire an event to allow the parent route to reload its model
this.success(file.fileName);
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});
});
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this.resumable.on("fileError", (file, message) => {
later(() => {
// mark as not uploading anymore
this._reset();
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// fire an event to allow the parent route to display the error message
this.error(file.fileName, message);
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});
});
},
@on("didInsertElement")
_assignBrowse() {
schedule("afterRender", () => this.resumable.assignBrowse($(this.element)));
},
@on("willDestroyElement")
_teardown() {
if (this.resumable) {
this.resumable.cancel();
this.resumable = null;
}
},
@discourseComputed("title", "text")
translatedTitle(title, text) {
return title ? I18n.t(title) : text;
},
@discourseComputed("isUploading", "progress")
text(isUploading, progress) {
if (isUploading) {
return progress + " %";
} else {
return this.uploadText;
}
},
didReceiveAttrs() {
this._super(...arguments);
this._updateIcon();
},
click() {
if (this.isUploading) {
this.resumable.cancel();
later(() => this._reset());
return false;
} else {
return true;
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}
},
_updateIcon() {
const icon = this.isUploading ? "times" : "upload";
this.set("uploadingIcon", `${iconHTML(icon)}`.htmlSafe());
},
_updateProgressBar() {
const pb = `${"width:" + this.progress + "%"}`.htmlSafe();
this.set("progressBar", pb);
},
_reset() {
this.setProperties({ isUploading: false, progress: 0 });
this._updateIcon();
this._updateProgressBar();
},
});