fnx_web/res/include/script/file_viewer/viewer_scripts/FileViewer.js

function FileViewer(viewer, file, next) {
	this.viewer = viewer;
	this.file   = file;
	this.next   = next;

	this.container = document.createElement("div");
	this.container.classList = "image-container";
	this.container.appendChild(document.createElement("br"));

	this.icon = document.createElement("img");
	this.icon.src = apiEndpoint+"/"+file.thumbnail_href;
	this.container.appendChild(this.icon);

	this.container.appendChild(document.createElement("br"));
	this.container.appendChild(document.createTextNode(file.name));
	this.container.appendChild(document.createElement("br"));
	this.container.appendChild(document.createTextNode("Type: "+file.mime_type));
	this.container.appendChild(document.createElement("br"));
	this.container.appendChild(document.createElement("br"));
	this.container.appendChild(document.createTextNode(
		"Press the 'Download' button in the menu to download this file"
	));
}

FileViewer.prototype.render = function(parent) {
	parent.appendChild(this.container);
}