behavior-drag-and-drop-textarea.js
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behavior-drag-and-drop-textarea.js
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	/**
	* @provides javelin-behavior-aphront-drag-and-drop-textarea
	* @requires javelin-behavior
	* javelin-dom
	* phabricator-drag-and-drop-file-upload
	* phabricator-textareautils
	*/

	JX.behavior('aphront-drag-and-drop-textarea', function(config) {

	var target = JX.$(config.target);

	function onupload(f) {
	var ref = '{F' + f.getID() + '}';

	// If we're inserting immediately after a "}" (usually, another file
	// reference), put some newlines before our token so that multiple file
	// uploads get laid out more nicely.
	var range = JX.TextAreaUtils.getSelectionRange(target);
	var before = target.value.substring(0, range.start);
	if (before.match(/\}$/)) {
	ref = '\n\n' + ref;
	}

	JX.TextAreaUtils.setSelectionText(target, ref, false);
	}

	if (JX.PhabricatorDragAndDropFileUpload.isSupported()) {
	var drop = new JX.PhabricatorDragAndDropFileUpload(target)
	.setURI(config.uri)
	.setChunkThreshold(config.chunkThreshold);
	drop.listen('didBeginDrag', function() {
	JX.DOM.alterClass(target, config.activatedClass, true);
	});
	drop.listen('didEndDrag', function() {
	JX.DOM.alterClass(target, config.activatedClass, false);
	});
	drop.listen('didUpload', onupload);
	drop.start();
	}

	});