behavior-toggle-files.js
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behavior-toggle-files.js
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	/**
	* @provides javelin-behavior-differential-toggle-files
	* @requires javelin-behavior
	* javelin-dom
	* javelin-stratcom
	* phabricator-keyboard-shortcut
	*/

	JX.behavior('differential-toggle-files', function(config) {

	JX.Stratcom.listen(
	'differential-toggle-file',
	null,
	function(e) {
	if (e.getData().diff.length != 1) {
	return;
	}
	var diff = e.getData().diff[0],
	data = JX.Stratcom.getData(diff);
	if(data.hidden) {
	data.hidden = false;
	JX.DOM.show(diff);
	} else {
	data.hidden = true;
	JX.DOM.hide(diff);
	}
	JX.Stratcom.invoke('differential-toggle-file-toggled');
	});

	JX.Stratcom.listen(
	'differential-toggle-file-request',
	null,
	function(e) {
	var elt = e.getData().element;
	while (elt !== document.body) {
	if (JX.Stratcom.hasSigil(elt, 'differential-diff') &&
	JX.Stratcom.getData(elt).hidden) {
	JX.Stratcom.invoke('differential-toggle-file', null, {
	diff: [ elt ],
	});
	return;
	}
	elt = elt.parentNode;
	}
	});

	JX.Stratcom.listen(
	'hashchange',
	null,
	function(e) {
	var id = window.location.hash;
	if (!id.match(/^#/)) {
	return;
	}
	JX.Stratcom.invoke('differential-toggle-file-request', null, {
	element: JX.$(id.substr(1)),
	});
	// This event is processed after the hash has changed, so it doesn't
	// automatically jump there like we want.
	JX.DOM.scrollTo(JX.$(id.substr(1)));
	});
	});