Angular directive that sets the page's orientation to landscape for printing

setPrintToLandscape.js

angular.module("app").directive("setPrintToLandscape", function($document)
{
	return {
		restrict: "AE",
		link: function link(scope)
		{
			// Currently only supported in Chrome.
			// FF - https://bugzilla.mozilla.org/show_bug.cgi?id=851441
			// Safari - https://bugs.webkit.org/show_bug.cgi?id=63575
			var newSheet = angular.element("<style/>").attr({ "type":"text/css", "media":"print" });
			newSheet[0].appendChild(document.createTextNode(""));
			$document.find("head").append(newSheet);
			newSheet[0].sheet.insertRule("@page { size:landscape }", 0);
			scope.$on("$destroy", function()
			{
				newSheet.remove();
			});
		}
	};
});