behavior-remarkup-preview.js
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behavior-remarkup-preview.js
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	/**
	* @provides javelin-behavior-remarkup-preview
	* @requires javelin-behavior
	* javelin-dom
	* javelin-util
	* phabricator-shaped-request
	*/

	JX.behavior('remarkup-preview', function(config) {

	// Don't bother with any of this on mobile.
	if (JX.Device.getDevice() !== 'desktop') {
	return;
	}

	var preview = JX.$(config.previewID);
	var control = JX.$(config.controlID);

	var callback = function(r) {
	// This currently accepts responses from two controllers:
	// Old: PhabricatorMarkupPreviewController
	// New: PhabricatorApplicationTransactionRemarkupPreviewController
	// TODO: Swap everything to just the new controller.

	JX.DOM.setContent(preview, JX.$H(r.content \|\| r));
	};

	var getdata = function() {
	return {
	text: control.value
	};
	};

	var request = new JX.PhabricatorShapedRequest(config.uri, callback, getdata);
	var trigger = JX.bind(request, request.trigger);

	JX.DOM.listen(control, 'keydown', null, trigger);
	request.start();

	trigger();
	});