main.js

( function( $ ) {

var xGerritAuth;
var isNewScreen;
var isv29OrGreater;
var gerrit_rpc_base = "/gerrit_ui/rpc/";
var current_change_id;
var gerrit_request_id = 1;

var commentPanelClass;
var commentAuthorClass;
var commentSummaryClass;
var commentPanelHeader;
var commentPanelMessage;

function colorComment( $commentPanel ) {
	var author = $commentPanel.find( commentPanelAuthorClass ).text();
	var username = $('.menuBarUserName').text()
	var heading = $commentPanel.find( commentPanelMessage ).eq( 0 ).text(),
		color = '#aaa';
	if (author === username) {
		color = 'blue';
	} else if ( heading.match( /Code\-Review\-2/ ) || heading.match( /Verified\-2/ ) ) {
		color = '#C90505';
	} else if ( heading.match( /Code\-Review\-1/ ) || heading.match( /Verified\-1/ ) ) {
		color = 'red';
	} else if ( heading.match( /Code\-Review\+1/ ) ) {
		color = 'yellow';
	} else if ( heading.match( /Code\-Review\+2/ ) ) {
		color = 'green';
	}
	$commentPanel.css( {
		'border-left': 'solid 10px ' + color,
		'border-top-left-radius': 0,
		'border-bottom-left-radius': 0
	} );
}

function postJSON(_url, data, func) {
	$.ajax({type: "POST",
			url: _url,
			dataType: "json",
			data: data,
			headers: {"Content-Type":"application/json; charset=UTF-8",
					  "Accept":"application/json; application/jsonrequest; text/html",
					  "X-Gerrit-Auth": xGerritAuth
					 }
			})
	.done(func)
	.fail(function(a){func("badvalue")});
}

function gerritJsonRPC(service, func, params, cb) {
	gerrit_request_id +=1;
	var url = document.location.origin+gerrit_rpc_base+service;
	var jsonData = '{"jsonrpc":"2.0","method":"'+func+'","params":'+JSON.stringify(params)+',"id":'+gerrit_request_id+',"xsrfKey":"'+ xGerritAuth+'"}';
	postJSON(url, jsonData, cb);
}

function getDetail(id, psid, cb) {
	gerritJsonRPC("ChangeDetailService", "patchSetDetail2",[null,{"changeId":{"id":id},"patchSetId":psid},null], function(r){
		cb(r.result);
	});
}

function parseChangeId(href) {
	var orig = href.substring(8)
	orig = orig.substring(orig.indexOf('/'))
	if (orig.indexOf('/c/') != -1)
		orig = orig.substring(orig.indexOf('/c/')+3)
	else if (orig.indexOf('/changes/') != -1)
		orig = orig.substring(orig.indexOf('/changes/')+9)
	else
		orig = orig.substring(1)
	if (orig.indexOf('/') != -1)
		orig = orig.substring(0, orig.indexOf('/'))
	return orig;
}

function listener( ev ) {
	var $t = $( ev.target ), author, action;

	if ( $t.hasClass( commentPanelClass ) ) { // force open comment panel
		var $authorNode = $t.find( commentPanelAuthorClass );
		author = $authorNode.text();
		action = $t.find( commentPanelSummaryClass ).text();
		if ( author === 'builder builder' || author === 'Review Bot' ||
			action.indexOf( 'Uploaded patch set' ) === 0  ||
			action.match( /was rebased$/ ) ) {
			 // make jenkins comments less prominent
			$t.find( commentPanelHeader ).css( 'opacity', 0.6 );
		}
		else if ( !isNewScreen && action.match( /…$/) ) {
			// expand comment
			$t.find( commentPanelSummaryClass ).hide();
			$t.find( '.commentPanelContent' ).show();
		}
		else if ( isNewScreen && action !== '' ) {
			// expand comment
			setTimeout(function() { // yield
				$authorNode.trigger( "click" );
			}, 0)
		}
		colorComment( $t );
	} else if ( $t.hasClass( 'gwt-InlineHyperlink' ) && $t.text() === 'Permalink') {
		current_change_id = parseChangeId($t.attr('href'));
	} else if ( $t.hasClass( 'gwt-DisclosurePanel' ) ) {
		var psText = $t.find( 'tr' ).eq( 0 ).find( 'td' ).eq( 2 ).text().replace('Patch Set ','')
	    getDetail(current_change_id, psText, function(r){
			var parent = r.info.parents[0].id.id;
			var comments = 0;
			r.patches.forEach(function(a) {
				comments += a.nbrComments;
			});
			if (comments > 0)
				$( '<span/>' ).text( ' (' + comments + ')').appendTo( $t.find( 'tr' ).eq( 0 ).find( 'td' ).eq( 2 ) );
			$( '<span/>' ).text( ' / ' + parent ).appendTo( $t.find( '.patchSetRevision' ).eq( 0 ) );
		})
	}
}

function setupClassNames( ) {
    commentPanelClass = isNewScreen ? (isv29OrGreater ? 'com-google-gerrit-client-change-Message_BinderImpl_GenCss_style-closed' : 'GKSE20JDH4') : 'commentPanel';
    commentPanelAuthorClass = isNewScreen ? (isv29OrGreater ? '.com-google-gerrit-client-change-Message_BinderImpl_GenCss_style-name' : '.GKSE20JDI4') : '.commentPanelAuthorCell';
    commentPanelSummaryClass = isNewScreen ? (isv29OrGreater ? '.com-google-gerrit-client-change-Message_BinderImpl_GenCss_style-summary' : '.GKSE20JDJ4') : '.commentPanelSummary';
    commentPanelHeader = isNewScreen ? (isv29OrGreater ? '.com-google-gerrit-client-change-Message_BinderImpl_GenCss_style-contents' : '.GKSE20JDF4') : '.commentPanelHeader';
    commentPanelMessage = isNewScreen ? (isv29OrGreater ? '.com-google-gerrit-client-change-Message_BinderImpl_GenCss_style-summary' : '.GKSE20JDJ4') : '.commentPanelMessage p';
}

function isVersion29rGreater(version) {
    var extra = version.indexOf("-");
    if (extra != -1) version = version.substring(0, extra);

    var versionParts = version.split('.');

    if (versionParts.length < 2) {
        if (versionParts.length == 1) {
            return versionParts[0] >= 3;
        }
        return false;
    }

    var minorVersion = versionParts[1].split('-')[0];

    return versionParts[0] >= 2 && minorVersion >= 9 ||
        versionParts[0] >= 3;
}

function initialise(pageData) {
	xGerritAuth = pageData.xGerritAuth;

	// new screen can be triggered manually via url (/c2/), which doesn't reflect in json data
	var hasNonGlobalV2Screen = document.location.href.indexOf('/#/c2/') != -1;
	var hasV2ScreenInPreferences = pageData.account.generalPreferences.changeScreen ? pageData.account.generalPreferences.changeScreen.indexOf('CHANGE_SCREEN2') != -1 : true;
	isNewScreen = hasNonGlobalV2Screen || hasV2ScreenInPreferences;

	isv29OrGreater = isVersion29rGreater(pageData.version);

	setupClassNames();

	console.log("Loaded Gerrit-Be-Nice-To-Me @ Ullink. Using auth token: " + xGerritAuth + " on Gerrit v" + pageData.version);
}

document.addEventListener( 'DOMNodeInserted', listener, false );

$.get(document.location.origin.toString()).done(function(res) {
	$.globalEval($(res).filter("#gerrit_hostpagedata").html());
	initialise(gerrit_hostpagedata);
});

} )( jQuery );