ct-ui-router-extras.js 82.6 KB
Newer Older
eddie.woo's avatar
eddie.woo committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937
/**
 * UI-Router Extras: Sticky states, Future States, Deep State Redirect, Transition promise
 * Monolithic build (all modules)
 * @version 0.1.0
 * @link http://christopherthielen.github.io/ui-router-extras/
 * @license MIT License, http://www.opensource.org/licenses/MIT
 */
(function (root, factory) {
    'use strict';

    if (typeof define === 'function' && define.amd) {
        define(['angular'], function (angular) {
            factory(angular);
        });
    } else if (typeof exports === 'object') {
        factory(require('angular'));
    } else {
        factory(root.angular);
    }
}(this, function (angular, undefined) {
    var mod_core = angular.module("ct.ui.router.extras.core", [ "ui.router" ]);

var internalStates = {}, stateRegisteredCallbacks = [];
mod_core.config([ '$stateProvider', '$injector', function ($stateProvider, $injector) {
  // Decorate any state attribute in order to get access to the internal state representation.
  $stateProvider.decorator('parent', function (state, parentFn) {
    // Capture each internal UI-Router state representations as opposed to the user-defined state object.
    // The internal state is, e.g., the state returned by $state.$current as opposed to $state.current
    internalStates[state.self.name] = state;
    // Add an accessor for the internal state from the user defined state
    state.self.$$state = function () {
      return internalStates[state.self.name];
    };

    angular.forEach(stateRegisteredCallbacks, function(callback) { callback(state); });
    return parentFn(state);
  });
}]);

var DEBUG = false;

var forEach = angular.forEach;
var extend = angular.extend;
var isArray = angular.isArray;

var map = function (collection, callback) {
  "use strict";
  var result = [];
  forEach(collection, function (item, index) {
    result.push(callback(item, index));
  });
  return result;
};

var keys = function (collection) {
  "use strict";
  return map(collection, function (collection, key) {
    return key;
  });
};

var filter = function (collection, callback) {
  "use strict";
  var result = [];
  forEach(collection, function (item, index) {
    if (callback(item, index)) {
      result.push(item);
    }
  });
  return result;
};

var filterObj = function (collection, callback) {
  "use strict";
  var result = {};
  forEach(collection, function (item, index) {
    if (callback(item, index)) {
      result[index] = item;
    }
  });
  return result;
};

// Duplicates code in UI-Router common.js
function ancestors(first, second) {
  var path = [];

  for (var n in first.path) {
    if (first.path[n] !== second.path[n]) break;
    path.push(first.path[n]);
  }
  return path;
}

// Duplicates code in UI-Router common.js
function objectKeys(object) {
  if (Object.keys) {
    return Object.keys(object);
  }
  var result = [];

  angular.forEach(object, function (val, key) {
    result.push(key);
  });
  return result;
}

/**
 * like objectKeys, but includes keys from prototype chain.
 * @param object the object whose prototypal keys will be returned
 * @param ignoreKeys an array of keys to ignore
 */
// Duplicates code in UI-Router common.js
function protoKeys(object, ignoreKeys) {
  var result = [];
  for (var key in object) {
    if (!ignoreKeys || ignoreKeys.indexOf(key) === -1)
      result.push(key);
  }
  return result;
}

// Duplicates code in UI-Router common.js
function arraySearch(array, value) {
  if (Array.prototype.indexOf) {
    return array.indexOf(value, Number(arguments[2]) || 0);
  }
  var len = array.length >>> 0, from = Number(arguments[2]) || 0;
  from = (from < 0) ? Math.ceil(from) : Math.floor(from);

  if (from < 0) from += len;

  for (; from < len; from++) {
    if (from in array && array[from] === value) return from;
  }
  return -1;
}

// Duplicates code in UI-Router common.js
// Added compatibility code  (isArray check) to support both 0.2.x and 0.3.x series of UI-Router.
function inheritParams(currentParams, newParams, $current, $to) {
  var parents = ancestors($current, $to), parentParams, inherited = {}, inheritList = [];

  for (var i in parents) {
    if (!parents[i].params) continue;
    // This test allows compatibility with 0.2.x and 0.3.x (optional and object params)
    parentParams = isArray(parents[i].params) ? parents[i].params : objectKeys(parents[i].params);
    if (!parentParams.length) continue;

    for (var j in parentParams) {
      if (arraySearch(inheritList, parentParams[j]) >= 0) continue;
      inheritList.push(parentParams[j]);
      inherited[parentParams[j]] = currentParams[parentParams[j]];
    }
  }
  return extend({}, inherited, newParams);
}

function inherit(parent, extra) {
  return extend(new (extend(function () { }, {prototype: parent}))(), extra);
}

function onStateRegistered(callback) { stateRegisteredCallbacks.push(callback); }

mod_core.provider("uirextras_core", function() {
  var core = {
    internalStates: internalStates,
    onStateRegistered: onStateRegistered,
    forEach: forEach,
    extend: extend,
    isArray: isArray,
    map: map,
    keys: keys,
    filter: filter,
    filterObj: filterObj,
    ancestors: ancestors,
    objectKeys: objectKeys,
    protoKeys: protoKeys,
    arraySearch: arraySearch,
    inheritParams: inheritParams,
    inherit: inherit
  };

  angular.extend(this, core);

  this.$get = function() {
    return core;
  };
});


var ignoreDsr;
function resetIgnoreDsr() {
  ignoreDsr = undefined;
}

// Decorate $state.transitionTo to gain access to the last transition.options variable.
// This is used to process the options.ignoreDsr option
angular.module('ct.ui.router.extras.dsr', [ 'ct.ui.router.extras.core' ]).config([ "$provide", function ($provide) {
  var $state_transitionTo;
  $provide.decorator("$state", ['$delegate', '$q', function ($state, $q) {
    $state_transitionTo = $state.transitionTo;
    $state.transitionTo = function (to, toParams, options) {
      if (options.ignoreDsr) {
        ignoreDsr = options.ignoreDsr;
      }

      return $state_transitionTo.apply($state, arguments).then(
        function (result) {
          resetIgnoreDsr();
          return result;
        },
        function (err) {
          resetIgnoreDsr();
          return $q.reject(err);
        }
      );
    };
    return $state;
  }]);
}]);

angular.module('ct.ui.router.extras.dsr').service("$deepStateRedirect", [ '$rootScope', '$state', '$injector', function ($rootScope, $state, $injector) {
  var lastSubstate = {};
  var deepStateRedirectsByName = {};

  var REDIRECT = "Redirect", ANCESTOR_REDIRECT = "AncestorRedirect";

  function computeDeepStateStatus(state) {
    var name = state.name;
    if (deepStateRedirectsByName.hasOwnProperty(name))
      return deepStateRedirectsByName[name];
    recordDeepStateRedirectStatus(name);
  }

  function getConfig(state) {
    var declaration = state.deepStateRedirect || state.dsr;
    if (!declaration) return { dsr: false };
    var dsrCfg = { dsr: true };

    if (angular.isFunction(declaration)) {
      dsrCfg.fn = declaration;
    } else if (angular.isObject(declaration)) {
      dsrCfg = angular.extend(dsrCfg, declaration);
    }

    if (angular.isString(dsrCfg['default'])) {
      dsrCfg['default'] = { state: dsrCfg['default'] };
    }

    if (!dsrCfg.fn) {
      dsrCfg.fn = [ '$dsr$', function($dsr$) {
        return $dsr$.redirect.state != $dsr$.to.state;
      } ];
    }
    return dsrCfg;
  }

  function recordDeepStateRedirectStatus(stateName) {
    var state = $state.get(stateName);
    if (!state) return false;
    var cfg = getConfig(state);
    if (cfg.dsr) {
      deepStateRedirectsByName[state.name] = REDIRECT;
      if (lastSubstate[stateName] === undefined)
        lastSubstate[stateName] = {};
    }

    var parent = state.$$state && state.$$state().parent;
    if (parent) {
      var parentStatus = recordDeepStateRedirectStatus(parent.self.name);
      if (parentStatus && deepStateRedirectsByName[state.name] === undefined) {
        deepStateRedirectsByName[state.name] = ANCESTOR_REDIRECT;
      }
    }
    return deepStateRedirectsByName[state.name] || false;
  }

  function getMatchParams(params, dsrParams) {
    if (dsrParams === true) dsrParams = Object.keys(params);
    if (dsrParams === null || dsrParams === undefined) dsrParams = [];

    var matchParams = {};
    angular.forEach(dsrParams.sort(), function(name) { matchParams[name] = params[name]; });
    return matchParams;
  }

  function getParamsString(params, dsrParams) {
    var matchParams = getMatchParams(params, dsrParams);
    function safeString(input) { return !input ? input : input.toString(); }
    var paramsToString = {};
    angular.forEach(matchParams, function(val, name) { paramsToString[name] = safeString(val); });
    return angular.toJson(paramsToString);
  }

  $rootScope.$on("$stateChangeStart", function (event, toState, toParams, fromState, fromParams) {
    var cfg = getConfig(toState);
    if (ignoreDsr || (computeDeepStateStatus(toState) !== REDIRECT) && !cfg['default']) return;
    // We're changing directly to one of the redirect (tab) states.
    // Get the DSR key for this state by calculating the DSRParams option
    var key = getParamsString(toParams, cfg.params);
    var redirect = lastSubstate[toState.name][key] || cfg['default'];
    if (!redirect) return;

    // we have a last substate recorded
    var $dsr$ = { redirect: { state: redirect.state, params: redirect.params}, to: { state: toState.name, params: toParams } };
    var result = $injector.invoke(cfg.fn, toState, { $dsr$: $dsr$ });
    if (!result) return;
    if (result.state) redirect = result;
    event.preventDefault();
    var redirectParams = getMatchParams(toParams, cfg.params);
    $state.go(redirect.state, angular.extend(redirectParams, redirect.params));
  });

  $rootScope.$on("$stateChangeSuccess", function (event, toState, toParams, fromState, fromParams) {
    var deepStateStatus = computeDeepStateStatus(toState);
    if (deepStateStatus) {
      var name = toState.name;
      angular.forEach(lastSubstate, function (redirect, dsrState) {
        // update Last-SubState&params for each DSR that this transition matches.
        var cfg = getConfig($state.get(dsrState));
        var key = getParamsString(toParams, cfg.params);
        if (toState.$$state().includes[dsrState]) {
          lastSubstate[dsrState][key] = { state: name, params: angular.copy(toParams) };
        }
      });
    }
  });

  return {
    getRedirect: function(dsrState, params) {
      var state = $state.get(dsrState);
      computeDeepStateStatus(state)
      var cfg = getConfig(state);
      var key = getParamsString(params, cfg.params);
      var redirect = lastSubstate[state.name][key] || cfg['default'];
      return redirect;
    },
    reset: function(stateOrName, params) {
      if (!stateOrName) {
        angular.forEach(lastSubstate, function(redirect, dsrState) { lastSubstate[dsrState] = {}; });
      } else {
        var state = $state.get(stateOrName);
        if (!state) throw new Error("Unknown state: " + stateOrName);
        if (lastSubstate[state.name]) {
          if (params) {
            var key = getParamsString(params, getConfig(state).params);
            delete lastSubstate[state.name][key];
          } else {
            lastSubstate[state.name] = {};
          }
        }
      }
    }
  };
}]);

angular.module('ct.ui.router.extras.dsr').run(['$deepStateRedirect', function ($deepStateRedirect) {
  // Make sure $deepStateRedirect is instantiated
}]);

angular.module("ct.ui.router.extras.sticky", [ 'ct.ui.router.extras.core' ]);

var mod_sticky = angular.module("ct.ui.router.extras.sticky");

$StickyStateProvider.$inject = [ '$stateProvider', 'uirextras_coreProvider' ];
function $StickyStateProvider($stateProvider, uirextras_coreProvider) {
  var core = uirextras_coreProvider;
  var inheritParams = core.inheritParams;
  var objectKeys = core.objectKeys;
  var protoKeys = core.protoKeys;
  var forEach = core.forEach;
  var map = core.map;

  // Holds all the states which are inactivated.  Inactivated states can be either sticky states, or descendants of sticky states.
  var inactiveStates = {}; // state.name -> (state)
  var stickyStates = {}; // state.name -> true
  var $state;
  var DEBUG = false;

  // Called by $stateProvider.registerState();
  // registers a sticky state with $stickyStateProvider
  this.registerStickyState = function (state) {
    stickyStates[state.name] = state;
    // console.log("Registered sticky state: ", state);
  };

  this.enableDebug = this.debugMode = function (enabled) {
    if (angular.isDefined(enabled))
      DEBUG = enabled;
    return DEBUG;
  };

  this.$get = [  '$rootScope', '$state', '$stateParams', '$injector', '$log',
    function ($rootScope, $state, $stateParams, $injector, $log) {
      // Each inactive states is either a sticky state, or a child of a sticky state.
      // This function finds the closest ancestor sticky state, then find that state's parent.
      // Map all inactive states to their closest parent-to-sticky state.
      function mapInactives() {
        var mappedStates = {};
        angular.forEach(inactiveStates, function (state, name) {
          var stickyAncestors = getStickyStateStack(state);
          for (var i = 0; i < stickyAncestors.length; i++) {
            var parent = stickyAncestors[i].parent;
            mappedStates[parent.name] = mappedStates[parent.name] || [];
            mappedStates[parent.name].push(state);
          }
          if (mappedStates['']) {
            // This is necessary to compute Transition.inactives when there are sticky states are children to root state.
            mappedStates['__inactives'] = mappedStates[''];  // jshint ignore:line
          }
        });
        return mappedStates;
      }

      function mapInactivesByImmediateParent() {
        var inactivesByAllParents ={};
        forEach(inactiveStates, function(state) {
          forEach(state.path, function(ancestor) {
            if (ancestor === state) return;
            inactivesByAllParents[ancestor.name] = inactivesByAllParents[ancestor.name] || [];
            inactivesByAllParents[ancestor.name].push(state);
          });
        });
        return inactivesByAllParents;
      }

      // Given a state, returns all ancestor states which are sticky.
      // Walks up the view's state's ancestry tree and locates each ancestor state which is marked as sticky.
      // Returns an array populated with only those ancestor sticky states.
      function getStickyStateStack(state) {
        var stack = [];
        if (!state) return stack;
        do {
          if (state.sticky) stack.push(state);
          state = state.parent;
        } while (state);
        stack.reverse();
        return stack;
      }

      // Returns a sticky transition type necessary to enter the state.
      // Transition can be: reactivate, reload, or enter

      // Note: if a state is being reactivated but params dont match, we treat
      // it as a Exit/Enter, thus the special "reload" transition.
      // If a parent inactivated state has "reload" transition type, then
      // all descendant states must also be exit/entered, thus the first line of this function.
      function getEnterTransition(state, stateParams, reloadStateTree, ancestorReloaded) {
        if (ancestorReloaded) return "reload";
        var inactiveState = inactiveStates[state.self.name];
        if (!inactiveState) return "enter";
        if (state.self === reloadStateTree) return "reload";
        var paramsMatch = paramsEqualForState(state.ownParams, stateParams, inactiveState.locals.globals.$stateParams);
        return paramsMatch ? "reactivate" : "reload";
      }

      // Given a state and (optional) stateParams, returns the inactivated state from the inactive sticky state registry.
      function getInactivatedState(state, stateParams) {
        var inactiveState = inactiveStates[state.name];
        if (!inactiveState) return null;
        if (!stateParams) return inactiveState;
        var paramsMatch = paramsEqualForState(state.ownParams, stateParams, inactiveState.locals.globals.$stateParams);
        return paramsMatch ? inactiveState : null;
      }

      function paramsEqualForState(ownParams, stateParams, stateParams2) {
        if (typeof ownParams.$$equals === 'function')
          return ownParams.$$equals(stateParams, stateParams2);
        return equalForKeys(stateParams, stateParams2, ownParams);
      }

      // Duplicates logic in $state.transitionTo, primarily to find the pivot state (i.e., the "keep" value)
      function equalForKeys(a, b, keys) {
        if (!angular.isArray(keys) && angular.isObject(keys)) {
          keys = protoKeys(keys, ["$$keys", "$$values", "$$equals", "$$validates", "$$new", "$$parent"]);
        }
        if (!keys) {
          keys = [];
          for (var n in a) keys.push(n); // Used instead of Object.keys() for IE8 compatibility
        }

        for (var i = 0; i < keys.length; i++) {
          var k = keys[i];
          if (a[k] != b[k]) return false; // Not '===', values aren't necessarily normalized
        }
        return true;
      }

      function calcTreeChanges(transition) {
        var fromPath = transition.fromState.path;
        var toPath = transition.toState.path;
        var toParams = transition.toParams;
        var keep = 0, state = toPath[keep];

        if (transition.options.inherit) {
          toParams = inheritParams($stateParams, toParams || {}, $state.$current, transition.toState);
        }

        while (state && state === fromPath[keep] && paramsEqualForState(state.ownParams, toParams, transition.fromParams)) {
          // We're "keeping" this state. bump keep var and get the next state in toPath for the next iteration.
          state = toPath[++keep];
        }

        return {
          keep: keep,
          retained: fromPath.slice(0, keep),
          exiting: fromPath.slice(keep),
          entering: toPath.slice(keep)
        };
      }


      var stickySupport = {
        getInactiveStates: function () {
          return map(inactiveStates, angular.identity);
        },
        getInactiveStatesByParent: function () {
          return mapInactives();
        },
        // Main API for $stickyState, used by $state.
        // Processes a potential transition, returns an object with the following attributes:
        // {
        //    keep: The number of states being "kept"
        //    inactives: Array of all states which will be inactive if the transition is completed.
        //    reactivatingStates: Array of all states which will be reactivated if the transition is completed.
        //    orphans: Array of previously inactive states, which are being orphaned by the transition
        //        Note: Transitioning directly to an inactive state with inactive children will reactivate the state, but exit all the inactive children.
        //    enter: Enter transition type for all added states.  This is a parallel array to "toStates" array in $state.transitionTo.
        //    exit: Exit transition type for all removed states.  This is a parallel array to "fromStates" array in $state.transitionTo.
        // }
        processTransition: function (transition) {
          var treeChanges = calcTreeChanges(transition);
          var currentInactives = map(inactiveStates, angular.identity);
          var futureInactives, exitingTypes, enteringTypes;
          var keep = treeChanges.keep;


          /////////////////////////////////////////
          // helper functions
          function notIn(array) { return function (elem) { return array.indexOf(elem) === -1; }; }
          function flattenReduce(memo, list) { return memo.concat(list); }
          function uniqReduce(memo, orphan) { if (notIn(memo)(orphan)) memo.push(orphan); return memo; }
          function prop(attr) { return function(obj) { return obj[attr]; } }
          function typeIs(type) { return function(obj) { return obj.type === type; } }
          function isChildOf(state) { return function(other) { return other.parent === state; }; }
          var notEntering = notIn(treeChanges.entering);
          function notSticky(state) { return !state.sticky; }
          ////////////////////////////////////


          // Calculate the "exit" transition types for states being exited in fromPath
          // Exit types will be either "inactivate" or "exit"
          // Two things must be satisfied in order to inactivate the "exiting" states (instead of exit them):
          // - The first element of the exiting path must be sticky
          // - We must be entering any sibling state of the sticky (we can check this using entering.length)
          var shouldInactivate = treeChanges.exiting[0] && treeChanges.exiting[0].sticky && treeChanges.entering.length > 0;
          exitingTypes = treeChanges.exiting.map(function (state) {
              var type = shouldInactivate ? "inactivate" : "exit";
              return { type: type, state: state };
          });


          // Calculate the "enter" transition types for states being entered in toPath
          // Enter types will be either "enter", "reactivate", or "reload" where:
          //   enter: full resolve, no special logic
          //   reactivate: use previous locals
          //   reload: like 'enter', except exit the inactive state before entering it.
          var reloaded = !!transition.options.reload;
          enteringTypes = treeChanges.entering.map(function(state) {
            var type = getEnterTransition(state, transition.toParams, transition.reloadStateTree, reloaded);
            reloaded = reloaded || type === 'reload';
            return { type: type, state: state };
          });

          // Find all the "orphaned" states.  those states that are :
          //  - are siblings of the entering states
          //  - previously inactive
          //  - are not being reactivated (entered)
          //  - are not sticky
          // unioned with:
          //  - children of the toState
          //  - previously inactive
          //
          // Given:
          //   - states A (sticky: true), B, A.foo, A.bar
          //   - A.foo is currently inactive
          //   - B is currently active
          // Orphan case 1)
          //   - Transition to A.bar orphans the inactive state A.foo; it should be exited
          // Orphan case 2)
          //   - Transition directly to A orphans the inactive state A.foo; it should be exited
          //
          // Given:
          //   - states A (sticky: true), B, A.foo (sticky), A.bar
          //   - A.foo is currently inactive
          //   - B is currently active
          // Orphan case 3)
          //   - Transition directly to A orphans the inactive sticky state A.foo; it should be exited
          // Note: transition from B to A.bar does not orphan A.foo
          // Note 2: each orphaned state might be the parent of a larger inactive subtree.
          var orphanedRoots = treeChanges.entering
              // For each entering state in the path, find all sibling states which are currently inactive
              .map(function (entering) { return currentInactives.filter(isChildOf(entering.parent)); })
              // Flatten nested arrays. Now we have an array of inactive states that are children of the ones being entered.
              .reduce(flattenReduce, [])
              // Consider "orphaned": only those children that are themselves not currently being entered
              .filter(notEntering)
              // Consider "orphaned": only those children that are not themselves sticky states.
              .filter(notSticky)
              // Finally, union that set with any inactive children of the "to state"
              .concat(currentInactives.filter(isChildOf(transition.toState)));

          var currentInactivesByParent = mapInactivesByImmediateParent();
          var allOrphans = orphanedRoots
              .map(function(root) { return currentInactivesByParent[root.name] })
              .filter(angular.isDefined)
              .reduce(flattenReduce, [])
              .concat(orphanedRoots)
              // Sort by depth to exit orphans in proper order
              .sort(function (a,b) { return a.name.split(".").length - b.name.split(".").length; });

          // Add them to the list of states being exited.
          var exitOrOrphaned = exitingTypes
              .filter(typeIs("exit"))
              .map(prop("state"))
              .concat(allOrphans);

          // Now calculate the states that will be inactive if this transition succeeds.
          // We have already pushed the transitionType == "inactivate" states to 'inactives'.
          // Second, add all the existing inactive states
          futureInactives = currentInactives
              .filter(notIn(exitOrOrphaned))
              .filter(notIn(treeChanges.entering))
              .concat(exitingTypes.filter(typeIs("inactivate")).map(prop("state")));

          return {
            keep: keep,
            enter: new Array(keep).concat(enteringTypes.map(prop("type"))),
            exit: new Array(keep).concat(exitingTypes.map(prop("type"))),
            inactives: futureInactives,
            reactivatingStates: enteringTypes.filter(typeIs("reactivate")).map(prop("state")),
            orphans: allOrphans
          };
        },

        // Adds a state to the inactivated sticky state registry.
        stateInactivated: function (state) {
          // Keep locals around.
          inactiveStates[state.self.name] = state;
          // Notify states they are being Inactivated (i.e., a different
          // sticky state tree is now active).
          state.self.status = 'inactive';
          if (state.self.onInactivate)
            $injector.invoke(state.self.onInactivate, state.self, state.locals.globals);
        },

        // Removes a previously inactivated state from the inactive sticky state registry
        stateReactivated: function (state) {
          if (inactiveStates[state.self.name]) {
            delete inactiveStates[state.self.name];
          }
          state.self.status = 'entered';
//        if (state.locals == null || state.locals.globals == null) debugger;
          if (state.self.onReactivate)
            $injector.invoke(state.self.onReactivate, state.self, state.locals.globals);
        },

        // Exits all inactivated descendant substates when the ancestor state is exited.
        // When transitionTo is exiting a state, this function is called with the state being exited.  It checks the
        // registry of inactivated states for descendants of the exited state and also exits those descendants.  It then
        // removes the locals and de-registers the state from the inactivated registry.
        stateExiting: function (exiting, exitQueue, onExit) {
          var exitingNames = {};
          angular.forEach(exitQueue, function (state) {
            exitingNames[state.self.name] = true;
          });

          angular.forEach(inactiveStates, function (inactiveExiting, name) {
            // TODO: Might need to run the inactivations in the proper depth-first order?
            if (!exitingNames[name] && inactiveExiting.includes[exiting.name]) {
              if (DEBUG) $log.debug("Exiting " + name + " because it's a substate of " + exiting.name + " and wasn't found in ", exitingNames);
              if (inactiveExiting.self.onExit)
                $injector.invoke(inactiveExiting.self.onExit, inactiveExiting.self, inactiveExiting.locals.globals);
              angular.forEach(inactiveExiting.locals, function(localval, key) {
                delete inactivePseudoState.locals[key];
              });
              inactiveExiting.locals = null;
              inactiveExiting.self.status = 'exited';
              delete inactiveStates[name];
            }
          });

          if (onExit)
            $injector.invoke(onExit, exiting.self, exiting.locals.globals);
          exiting.locals = null;
          exiting.self.status = 'exited';
          delete inactiveStates[exiting.self.name];
        },

        // Removes a previously inactivated state from the inactive sticky state registry
        stateEntering: function (entering, params, onEnter, updateParams) {
          var inactivatedState = getInactivatedState(entering);
          if (inactivatedState && (updateParams || !getInactivatedState(entering, params))) {
            var savedLocals = entering.locals;
            this.stateExiting(inactivatedState);
            entering.locals = savedLocals;
          }
          entering.self.status = 'entered';

          if (onEnter)
            $injector.invoke(onEnter, entering.self, entering.locals.globals);
        },
        reset: function reset(inactiveState, params) {
          function resetOne(state) { stickySupport.reset(state); }
          if (inactiveState === "*") {
            angular.forEach(stickySupport.getInactiveStates(), resetOne);
            return true;
          }
          var state = $state.get(inactiveState);
          if (!state) return false;
          var exiting = getInactivatedState(state, params);
          if (!exiting) return false;
          stickySupport.stateExiting(exiting);
          $rootScope.$broadcast("$viewContentLoading");
          return true;
        }
      };

      return stickySupport;
    }];
}

mod_sticky.provider("$stickyState", $StickyStateProvider);

/**
 * Sticky States makes entire state trees "sticky". Sticky state trees are retained until their parent state is
 * exited. This can be useful to allow multiple modules, peers to each other, each module having its own independent
 * state tree.  The peer modules can be activated and inactivated without any loss of their internal context, including
 * DOM content such as unvalidated/partially filled in forms, and even scroll position.
 *
 * DOM content is retained by declaring a named ui-view in the parent state, and filling it in with a named view from the
 * sticky state.
 *
 * Technical overview:
 *
 * ---PATHS---
 * UI-Router uses state paths to manage entering and exiting of individual states.  Each state "A.B.C.X" has its own path, starting
 * from the root state ("") and ending at the state "X".  The path is composed the final state "X"'s ancestors, e.g.,
 * [ "", "A", "B", "C", "X" ].
 *
 * When a transition is processed, the previous path (fromState.path) is compared with the requested destination path
 * (toState.path).  All states that the from and to paths have in common are "kept" during the transition.  The last
 * "kept" element in the path is the "pivot".
 *
 * ---VIEWS---
 * A View in UI-Router consists of a controller and a template.  Each view belongs to one state, and a state can have many
 * views.  Each view plugs into a ui-view element in the DOM of one of the parent state's view(s).
 *
 * View context is managed in UI-Router using a 'state locals' concept. When a state's views are fully loaded, those views
 * are placed on the states 'locals' object.  Each locals object prototypally inherits from its parent state's locals object.
 * This means that state "A.B.C.X"'s locals object also has all of state "A.B.C"'s locals as well as those from "A.B" and "A".
 * The root state ("") defines no views, but it is included in the protypal inheritance chain.
 *
 * The locals object is used by the ui-view directive to load the template, render the content, create the child scope,
 * initialize the controller, etc.  The ui-view directives caches the locals in a closure variable.  If the locals are
 * identical (===), then the ui-view directive exits early, and does no rendering.
 *
 * In stock UI-Router, when a state is exited, that state's locals object is deleted and those views are cleaned up by
 * the ui-view directive shortly.
 *
 * ---Sticky States---
 * UI-Router Extras keeps views for inactive states live, even when UI-Router thinks it has exited them.  It does this
 * by creating a pseudo state called "__inactives" that is the parent of the root state.  It also then defines a locals
 * object on the "__inactives" state, which the root state protoypally inherits from.  By doing this, views for inactive
 * states are accessible through locals object's protoypal inheritance chain from any state in the system.
 *
 * ---Transitions---
 * UI-Router Extras decorates the $state.transitionTo function.  While a transition is in progress, the toState and
 * fromState internal state representations are modified in order to coerce stock UI-Router's transitionTo() into performing
 * the appropriate operations.  When the transition promise is completed, the original toState and fromState values are
 * restored.
 *
 * Stock UI-Router's $state.transitionTo function uses toState.path and fromState.path to manage entering and exiting
 * states.  UI-Router Extras takes advantage of those internal implementation details and prepares a toState.path and
 * fromState.path which coerces UI-Router into entering and exiting the correct states, or more importantly, not entering
 * and not exiting inactive or sticky states.  It also replaces state.self.onEnter and state.self.onExit for elements in
 * the paths when they are being inactivated or reactivated.
 */



// ------------------------ Sticky State module-level variables -----------------------------------------------
var _StickyState; // internal reference to $stickyStateProvider
var internalStates = {}; // Map { statename -> InternalStateObj } holds internal representation of all states
var root, // Root state, internal representation
  pendingTransitions = [], // One transition may supersede another.  This holds references to all pending transitions
  pendingRestore, // The restore function from the superseded transition
  inactivePseudoState, // This pseudo state holds all the inactive states' locals (resolved state data, such as views etc)
  reactivatingLocals = { }, // This is a prent locals to the inactivePseudoState locals, used to hold locals for states being reactivated
  versionHeuristics = { // Heuristics used to guess the current UI-Router Version
    hasParamSet: false
  };

// Creates a blank surrogate state
function SurrogateState(type) {
  return {
    resolve: { },
    locals: {
      globals: root && root.locals && root.locals.globals
    },
    views: { },
    self: { },
    params: { },
    ownParams: ( versionHeuristics.hasParamSet ? { $$equals: function() { return true; } } : []),
    surrogateType: type
  };
}

// ------------------------ Sticky State registration and initialization code ----------------------------------
// Grab a copy of the $stickyState service for use by the transition management code
angular.module("ct.ui.router.extras.sticky").run(["$stickyState", function ($stickyState) {
  _StickyState = $stickyState;
}]);

angular.module("ct.ui.router.extras.sticky").config(
  [ "$provide", "$stateProvider", '$stickyStateProvider', '$urlMatcherFactoryProvider', 'uirextras_coreProvider',
    function ($provide, $stateProvider, $stickyStateProvider, $urlMatcherFactoryProvider, uirextras_coreProvider) {
      var core = uirextras_coreProvider;
      var internalStates = core.internalStates;
      var inherit = core.inherit;
      var inheritParams = core.inheritParams;
      var forEach = core.forEach;
      var map = core.map;
      var filterObj = core.filterObj;

      versionHeuristics.hasParamSet = !!$urlMatcherFactoryProvider.ParamSet;
      // inactivePseudoState (__inactives) holds all the inactive locals which includes resolved states data, i.e., views, scope, etc
      inactivePseudoState = angular.extend(new SurrogateState("__inactives"), { self: {  name: '__inactives'  } });
      // Reset other module scoped variables.  This is to primarily to flush any previous state during karma runs.
      root = pendingRestore = undefined;
      pendingTransitions = [];

      uirextras_coreProvider.onStateRegistered(function(state) {
        // Register the ones marked as "sticky"
        if (state.self.sticky === true) {
          $stickyStateProvider.registerStickyState(state.self);
        }
      });

      var $state_transitionTo; // internal reference to the real $state.transitionTo function
      // Decorate the $state service, so we can decorate the $state.transitionTo() function with sticky state stuff.
      $provide.decorator("$state", ['$delegate', '$log', '$q', function ($state, $log, $q) {
        // Note: this code gets run only on the first state that is decorated
        root = $state.$current;
        internalStates[""] = root;
        root.parent = inactivePseudoState; // Make inactivePsuedoState the parent of root.  "wat"
        inactivePseudoState.parent = undefined; // Make inactivePsuedoState the real root.
        // Add another locals bucket, as a parent to inactivatePseudoState locals.
        // This is for temporary storage of locals of states being reactivated while a transition is pending
        // This is necessary in some cases where $viewContentLoading is triggered before the $state.$current is updated to the toState.
        inactivePseudoState.locals = inherit(reactivatingLocals, inactivePseudoState.locals);
        root.locals = inherit(inactivePseudoState.locals, root.locals); // make root locals extend the __inactives locals.
        delete inactivePseudoState.locals.globals;

        // Hold on to the real $state.transitionTo in a module-scope variable.
        $state_transitionTo = $state.transitionTo;

        // ------------------------ Decorated transitionTo implementation begins here ---------------------------
        $state.transitionTo = function (to, toParams, options) {
          var DEBUG = $stickyStateProvider.debugMode();
          // TODO: Move this to module.run?
          // TODO: I'd rather have root.locals prototypally inherit from inactivePseudoState.locals
          // Link root.locals and inactives.locals.  Do this at runtime, after root.locals has been set.
          if (!inactivePseudoState.locals)
            inactivePseudoState.locals = root.locals;
          var idx = pendingTransitions.length;
          if (pendingRestore) {
            pendingRestore();
            if (DEBUG) {
              $log.debug("Restored paths from pending transition");
            }
          }

          var fromState = $state.$current, fromParams = $state.params;
          var rel = options && options.relative || $state.$current; // Not sure if/when $state.$current is appropriate here.
          var toStateSelf = $state.get(to, rel); // exposes findState relative path functionality, returns state.self
          var savedToStatePath, savedFromStatePath, stickyTransitions;
          var reactivated = [], exited = [], terminalReactivatedState;
          toParams = toParams || {};
          arguments[1] = toParams;

          var noop = function () {
          };
          // Sticky states works by modifying the internal state objects of toState and fromState, especially their .path(s).
          // The restore() function is a closure scoped function that restores those states' definitions to their original values.
          var restore = function () {
            if (savedToStatePath) {
              toState.path = savedToStatePath;
              savedToStatePath = null;
            }

            if (savedFromStatePath) {
              fromState.path = savedFromStatePath;
              savedFromStatePath = null;
            }

            angular.forEach(restore.restoreFunctions, function (restoreFunction) {
              restoreFunction();
            });
            // Restore is done, now set the restore function to noop in case it gets called again.
            restore = noop;
            // pendingRestore keeps track of a transition that is in progress.  It allows the decorated transitionTo
            // method to be re-entrant (for example, when superceding a transition, i.e., redirect).  The decorated
            // transitionTo checks right away if there is a pending transition in progress and restores the paths
            // if so using pendingRestore.
            pendingRestore = null;
            pendingTransitions.splice(idx, 1); // Remove this transition from the list
          };

          // All decorated transitions have their toState.path and fromState.path replaced.  Surrogate states also make
          // additional changes to the states definition before handing the transition off to UI-Router. In particular,
          // certain types of surrogate states modify the state.self object's onEnter or onExit callbacks.
          // Those surrogate states must then register additional restore steps using restore.addRestoreFunction(fn)
          restore.restoreFunctions = [];
          restore.addRestoreFunction = function addRestoreFunction(fn) {
            this.restoreFunctions.push(fn);
          };


          // --------------------- Surrogate State Functions ------------------------
          // During a transition, the .path arrays in toState and fromState are replaced.  Individual path elements
          // (states) which aren't being "kept" are replaced with surrogate elements (states).  This section of the code
          // has factory functions for all the different types of surrogate states.


          function stateReactivatedSurrogatePhase1(state) {
            var surrogate = angular.extend(new SurrogateState("reactivate_phase1"), { locals: state.locals });
            surrogate.self = angular.extend({}, state.self);
            return surrogate;
          }

          function stateReactivatedSurrogatePhase2(state) {
            var surrogate = angular.extend(new SurrogateState("reactivate_phase2"), state);
            var oldOnEnter = surrogate.self.onEnter;
            surrogate.resolve = {}; // Don't re-resolve when reactivating states (fixes issue #22)
            // TODO: Not 100% sure if this is necessary.  I think resolveState will load the views if I don't do this.
            surrogate.views = {}; // Don't re-activate controllers when reactivating states (fixes issue #22)
            surrogate.self.onEnter = function () {
              // ui-router sets locals on the surrogate to a blank locals (because we gave it nothing to resolve)
              // Re-set it back to the already loaded state.locals here.
              surrogate.locals = state.locals;
              _StickyState.stateReactivated(state);
            };
            restore.addRestoreFunction(function () {
              state.self.onEnter = oldOnEnter;
            });
            return surrogate;
          }

          function stateInactivatedSurrogate(state) {
            var surrogate = new SurrogateState("inactivate");
            surrogate.self = state.self;
            var oldOnExit = state.self.onExit;
            surrogate.self.onExit = function () {
              _StickyState.stateInactivated(state);
            };
            restore.addRestoreFunction(function () {
              state.self.onExit = oldOnExit;
            });
            return surrogate;
          }

          function stateEnteredSurrogate(state, toParams) {
            var oldOnEnter = state.self.onEnter;
            state.self.onEnter = function () {
              _StickyState.stateEntering(state, toParams, oldOnEnter);
            };
            restore.addRestoreFunction(function () {
              state.self.onEnter = oldOnEnter;
            });

            return state;
          }

          // TODO: This may be completely unnecessary now that we're using $$uirouterextrasreload temp param
          function stateUpdateParamsSurrogate(state, toParams) {
            var oldOnEnter = state.self.onEnter;
            state.self.onEnter = function () {
              _StickyState.stateEntering(state, toParams, oldOnEnter, true);
            };
            restore.addRestoreFunction(function () {
              state.self.onEnter = oldOnEnter;
            });

            return state;
          }

          function stateExitedSurrogate(state) {
            var oldOnExit = state.self.onExit;
            state.self.onExit = function () {
              _StickyState.stateExiting(state, exited, oldOnExit);
            };
            restore.addRestoreFunction(function () {
              state.self.onExit = oldOnExit;
            });

            return state;
          }


          // --------------------- decorated .transitionTo() logic starts here ------------------------
          if (toStateSelf) {
            var toState = internalStates[toStateSelf.name]; // have the state, now grab the internal state representation
            if (toState) {
              // Save the toState and fromState paths to be restored using restore()
              savedToStatePath = toState.path;
              savedFromStatePath = fromState.path;

              // Try to resolve options.reload to a state.  If so, we'll reload only up to the given state.
              var reload = options && options.reload || false;
              var reloadStateTree = reload && (reload === true ? savedToStatePath[0].self : $state.get(reload, rel));
              // If options.reload is a string or a state, we want to handle reload ourselves and not
              // let ui-router reload the entire toPath.
              if (options && reload && reload !== true)
                delete options.reload;

              var currentTransition = {
                toState: toState,
                toParams: toParams || {},
                fromState: fromState,
                fromParams: fromParams || {},
                options: options,
                reloadStateTree: reloadStateTree
              };

              pendingTransitions.push(currentTransition); // TODO: See if a list of pending transitions is necessary.
              pendingRestore = restore;

              // If we're reloading from a state and below, temporarily add a param to the top of the state tree
              // being reloaded, and add a param value to the transition.  This will cause the "has params changed
              // for state" check to return true, and the states will be reloaded.
              if (reloadStateTree) {
                currentTransition.toParams.$$uirouterextrasreload = Math.random();
                var params = reloadStateTree.$$state().params;
                var ownParams = reloadStateTree.$$state().ownParams;

                if (versionHeuristics.hasParamSet) {
                  var tempParam = new $urlMatcherFactoryProvider.Param('$$uirouterextrasreload');
                  params.$$uirouterextrasreload = ownParams.$$uirouterextrasreload = tempParam;
                  restore.restoreFunctions.push(function() {
                    delete params.$$uirouterextrasreload;
                    delete ownParams.$$uirouterextrasreload;
                  });
                } else {
                  params.push('$$uirouterextrasreload');
                  ownParams.push('$$uirouterextrasreload');
                  restore.restoreFunctions.push(function() {
                    params.length = params.length -1;
                    ownParams.length = ownParams.length -1;
                  });
                }
              }

              // $StickyStateProvider.processTransition analyzes the states involved in the pending transition.  It
              // returns an object that tells us:
              // 1) if we're involved in a sticky-type transition
              // 2) what types of exit transitions will occur for each "exited" path element
              // 3) what types of enter transitions will occur for each "entered" path element
              // 4) which states will be inactive if the transition succeeds.
              stickyTransitions = _StickyState.processTransition(currentTransition);

              if (DEBUG) debugTransition($log, currentTransition, stickyTransitions);

              // Begin processing of surrogate to and from paths.
              var surrogateToPath = toState.path.slice(0, stickyTransitions.keep);
              var surrogateFromPath = fromState.path.slice(0, stickyTransitions.keep);

              // Clear out and reload inactivePseudoState.locals each time transitionTo is called
              angular.forEach(inactivePseudoState.locals, function (local, name) {
                if (name.indexOf("@") != -1) delete inactivePseudoState.locals[name];
              });

              var saveViewsToLocals = function (targetObj) {
                return function(view, name) {
                  if (name.indexOf("@") !== -1) { // Only grab this state's "view" locals
                    targetObj[name] = view; // Add all inactive views not already included.
                  }
                }
              };

              // For each state that will be inactive when the transition is complete, place its view-locals on the
              // __inactives pseudostate's .locals.  This allows the ui-view directive to access them and
              // render the inactive views.
              forEach(stickyTransitions.inactives, function(state) {
                forEach(state.locals, saveViewsToLocals(inactivePseudoState.locals))
              });

              // For each state that will be reactivated during the transition, place its view-locals on a separate
              // locals object (prototypal parent of __inactives.locals, and remove them when the transition is complete.
              // This is necessary when we a transition will reactivate one state, but enter a second.
              // Gory details:
              //   - the entering of a new state causes $view.load() to fire $viewContentLoading while the transition is
              //     still in process
              //   - all ui-view(s) check if they should re-render themselves in response to this event.
              //   - ui-view checks if previousLocals is equal to currentLocals
              //     - it uses $state.$current.locals[myViewName] for previousLocals
              //   - Because the transition is not completed, $state.$current is set to the from state, and
              //     the ui-view for a reactivated state cannot find its previous locals.
              forEach(stickyTransitions.reactivatingStates, function(state) {
                forEach(state.locals, saveViewsToLocals(reactivatingLocals));
              });

              // When the transition is complete, remove the copies of the view locals from reactivatingLocals.
              restore.addRestoreFunction(function clearReactivatingLocals() {
                forEach(reactivatingLocals, function (val, viewname) {
                  delete reactivatingLocals[viewname];
                })
              });

              // Find all the states the transition will be entering.  For each entered state, check entered-state-transition-type
              // Depending on the entered-state transition type, place the proper surrogate state on the surrogate toPath.
              angular.forEach(stickyTransitions.enter, function (value, idx) {
                var surrogate;
                var enteringState = toState.path[idx];
                if (value === "reactivate") {
                  // Reactivated states require TWO surrogates.  The "phase 1 reactivated surrogates" are added to both
                  // to.path and from.path, and as such, are considered to be "kept" by UI-Router.
                  // This is required to get UI-Router to add the surrogate locals to the protoypal locals object
                  surrogate = stateReactivatedSurrogatePhase1(enteringState);
                  surrogateToPath.push(surrogate);
                  surrogateFromPath.push(surrogate);  // so toPath[i] === fromPath[i]

                  // The "phase 2 reactivated surrogate" is added to the END of the .path, after all the phase 1
                  // surrogates have been added.
                  reactivated.push(stateReactivatedSurrogatePhase2(enteringState));
                  terminalReactivatedState = enteringState;
                } else if (value === "reload") {
                  // If the state params have been changed, we need to exit any inactive states and re-enter them.
                  surrogateToPath.push(stateUpdateParamsSurrogate(enteringState));
                  terminalReactivatedState = enteringState;
                } else if (value === "enter") {
                  // Standard enter transition.  We still wrap it in a surrogate.
                  surrogateToPath.push(stateEnteredSurrogate(enteringState));
                }
              });

              // Find all the states the transition will be exiting.  For each exited state, check the exited-state-transition-type.
              // Depending on the exited-state transition type, place a surrogate state on the surrogate fromPath.
              angular.forEach(stickyTransitions.exit, function (value, idx) {
                var exiting = fromState.path[idx];
                if (value === "inactivate") {
                  surrogateFromPath.push(stateInactivatedSurrogate(exiting));
                  exited.push(exiting);
                } else if (value === "exit") {
                  surrogateFromPath.push(stateExitedSurrogate(exiting));
                  exited.push(exiting);
                }
              });

              // Add surrogate states for reactivated to ToPath again (phase 2), this time without a matching FromPath entry
              // This is to get ui-router to call the surrogate's onEnter callback.
              if (reactivated.length) {
                angular.forEach(reactivated, function (surrogate) {
                  surrogateToPath.push(surrogate);
                });
              }

              // We may transition directly to an inactivated state, reactivating it.  In this case, we should
              // exit all of that state's inactivated children.
              var orphans = stickyTransitions.orphans;
              // Add surrogate exited states for all orphaned descendants of the Deepest Reactivated State
              surrogateFromPath = surrogateFromPath.concat(map(orphans, function (exiting) {
                return stateExitedSurrogate(exiting);
              }));
              exited = exited.concat(orphans);

              // Replace the .path variables.  toState.path and fromState.path are now ready for a sticky transition.
              fromState.path = surrogateFromPath;
              toState.path = surrogateToPath;

              var pathMessage = function (state) {
                return (state.surrogateType ? state.surrogateType + ":" : "") + state.self.name;
              };
              if (DEBUG) $log.debug("SurrogateFromPath: ", map(surrogateFromPath, pathMessage));
              if (DEBUG) $log.debug("SurrogateToPath:   ", map(surrogateToPath, pathMessage));
            }
          }

          // toState and fromState are all set up; now run stock UI-Router's $state.transitionTo().
          var transitionPromise = $state_transitionTo.apply($state, arguments);

          // Add post-transition promise handlers, then return the promise to the original caller.
          return transitionPromise.then(function transitionSuccess(state) {
            // First, restore toState and fromState to their original values.
            restore();
            if (DEBUG)  debugViewsAfterSuccess($log, internalStates[state.name], $state);

            state.status = 'active';  // TODO: This status is used in statevis.js, and almost certainly belongs elsewhere.

            return state;
          }, function transitionFailed(err) {
            restore();
            if (DEBUG &&
              err.message !== "transition prevented" &&
              err.message !== "transition aborted" &&
              err.message !== "transition superseded") {
              $log.debug("transition failed", err);
              $log.debug(err.stack);
            }
            return $q.reject(err);
          });
        };
        return $state;
      }]);



      function debugTransition($log, currentTransition, stickyTransition) {
        function message(path, index, state) {
          return (path[index] ? path[index].toUpperCase() + ": " + state.self.name : "(" + state.self.name + ")");
        }

        var inactiveLogVar = map(stickyTransition.inactives, function (state) {
          return state.self.name;
        });
        var enterLogVar = map(currentTransition.toState.path, function (state, index) {
          return message(stickyTransition.enter, index, state);
        });
        var exitLogVar = map(currentTransition.fromState.path, function (state, index) {
          return message(stickyTransition.exit, index, state);
        });

        var transitionMessage = currentTransition.fromState.self.name + ": " +
          angular.toJson(currentTransition.fromParams) + ": " +
          " -> " +
          currentTransition.toState.self.name + ": " +
          angular.toJson(currentTransition.toParams);

        $log.debug("------------------------------------------------------");
        $log.debug("   Current transition: ", transitionMessage);
        $log.debug("Before transition, inactives are:   : ", map(_StickyState.getInactiveStates(), function (s) {
          return s.self.name;
        }));
        $log.debug("After transition,  inactives will be: ", inactiveLogVar);
        $log.debug("Transition will exit:  ", exitLogVar);
        $log.debug("Transition will enter: ", enterLogVar);
      }

      function debugViewsAfterSuccess($log, currentState, $state) {
        $log.debug("Current state: " + currentState.self.name + ", inactive states: ", map(_StickyState.getInactiveStates(), function (s) {
          return s.self.name;
        }));

        var viewMsg = function (local, name) {
          return "'" + name + "' (" + local.$$state.name + ")";
        };
        var statesOnly = function (local, name) {
          return name != 'globals' && name != 'resolve';
        };
        var viewsForState = function (state) {
          var views = map(filterObj(state.locals, statesOnly), viewMsg).join(", ");
          return "(" + (state.self.name ? state.self.name : "root") + ".locals" + (views.length ? ": " + views : "") + ")";
        };

        var message = viewsForState(currentState);
        var parent = currentState.parent;
        while (parent && parent !== currentState) {
          if (parent.self.name === "") {
            // Show the __inactives before showing root state.
            message = viewsForState($state.$current.path[0]) + " / " + message;
          }
          message = viewsForState(parent) + " / " + message;
          currentState = parent;
          parent = currentState.parent;
        }

        $log.debug("Views: " + message);
      }
    }
  ]
);

(function(angular, undefined) {
  var app = angular.module('ct.ui.router.extras.future', [ 'ct.ui.router.extras.core' ]);

  _futureStateProvider.$inject = [ '$stateProvider', '$urlRouterProvider', '$urlMatcherFactoryProvider', 'uirextras_coreProvider' ];
  function _futureStateProvider($stateProvider, $urlRouterProvider, $urlMatcherFactory, uirextras_coreProvider) {
    var core = uirextras_coreProvider;
    var internalStates = core.internalStates;
    var stateFactories = {}, futureStates = {};
    var lazyloadInProgress = false, resolveFunctions = [], initPromise, initDone = false;
    var provider = this;

    // This function registers a promiseFn, to be resolved before the url/state matching code
    // will reject a route.  The promiseFn is injected/executed using the runtime $injector.
    // The function should return a promise.
    // When all registered promises are resolved, then the route is re-sync'ed.

    // Example: function($http) {
    //  return $http.get('//server.com/api/DynamicFutureStates').then(function(data) {
    //    angular.forEach(data.futureStates, function(fstate) { $futureStateProvider.futureState(fstate); });
    //  };
    // }
    this.addResolve = function (promiseFn) {
      resolveFunctions.push(promiseFn);
    };

    // Register a state factory function for a particular future-state type.  This factory, given a future-state object,
    // should create a ui-router state.
    // The factory function is injected/executed using the runtime $injector.  The future-state is injected as 'futureState'.

    // Example:
    //    $futureStateProvider.stateFactory('test', function(futureState) {
    //      return {
    //        name: futureState.stateName,
    //        url: futureState.urlFragment,
    //        template: '<h3>Future State Template</h3>',
    //        controller: function() {
    //          console.log("Entered state " + futureState.stateName);
    //        }
    //      }
    //    });
    this.stateFactory = function (futureStateType, factory) {
      stateFactories[futureStateType] = factory;
    };

    this.futureState = function (futureState) {
      if (futureState.stateName)  // backwards compat for now
        futureState.name = futureState.stateName;
      if (futureState.urlPrefix)  // backwards compat for now
        futureState.url = "^" + futureState.urlPrefix;

      futureStates[futureState.name] = futureState;
      var parentMatcher,  parentName = futureState.name.split(/\./).slice(0, -1).join("."),
        realParent = findState(futureState.parent || parentName);
      if (realParent) {
        parentMatcher = realParent.url || realParent.navigable && realParent.navigable.url;
      } else if (parentName === "") {
        parentMatcher = $urlMatcherFactory.compile("");
      } else {
        var futureParent = findState((futureState.parent || parentName), true);
        if (!futureParent) throw new Error("Couldn't determine parent state of future state. FutureState:" + angular.toJson(futureState));
        var pattern = futureParent.urlMatcher.source.replace(/\*rest$/, "");
        parentMatcher = $urlMatcherFactory.compile(pattern);
        futureState.parentFutureState = futureParent;
      }
      if (futureState.url) {
        futureState.urlMatcher = futureState.url.charAt(0) === "^" ?
          $urlMatcherFactory.compile(futureState.url.substring(1) + "*rest") :
          parentMatcher.concat(futureState.url + "*rest");
      }
    };

    this.get = function () {
      return angular.extend({}, futureStates);
    };

    function findState(stateOrName, findFutureState) {
      var statename = angular.isObject(stateOrName) ? stateOrName.name : stateOrName;
      return !findFutureState ? internalStates[statename] : futureStates[statename];
    }

    /* options is an object with at least a name or url attribute */
    function findFutureState($state, options) {
      if (options.name) {
        var nameComponents = options.name.split(/\./);
        if (options.name.charAt(0) === '.')
          nameComponents[0] = $state.current.name;
        while (nameComponents.length) {
          var stateName = nameComponents.join(".");
          if ($state.get(stateName, { relative: $state.current }))
            return null; // State is already defined; nothing to do
          if (futureStates[stateName])
            return futureStates[stateName];
          nameComponents.pop();
        }
      }

      if (options.url) {
        var matches = [];
        for(var future in futureStates) {
          var matcher = futureStates[future].urlMatcher;
          if (matcher && matcher.exec(options.url)) {
            matches.push(futureStates[future]);
          }
        }
        // Find most specific by ignoring matching parents from matches
        var copy = matches.slice(0);
        for (var i = matches.length - 1; i >= 0; i--) {
          for (var j = 0; j < copy.length; j++) {
            if (matches[i] === copy[j].parentFutureState) matches.splice(i, 1);
          }
        }
        return matches[0];
      }
    }

    function lazyLoadState($injector, futureState) {
      lazyloadInProgress = true;
      var $q = $injector.get("$q");
      if (!futureState) {
        var deferred = $q.defer();
        deferred.reject("No lazyState passed in " + futureState);
        return deferred.promise;
      }

      var parentPromises = $q.when([]), parentFuture = futureState.parentFutureState;
      if (parentFuture && futureStates[parentFuture.name]) {
        parentPromises = lazyLoadState($injector, futureStates[parentFuture.name]);
      }

      var type = futureState.type;
      var factory = stateFactories[type];
      if (!factory) throw Error("No state factory for futureState.type: " + (futureState && futureState.type));

      var failedLoadPolicy = factory.$options && factory.$options.failedLazyLoadPolicy || "remove";
      function deregisterFutureState() { delete(futureStates[futureState.name]); }
      function errorHandler(err) {
        if (failedLoadPolicy === "remove") deregisterFutureState();
        return $q.reject(err);
      }

      return parentPromises.then(function(array) {
        var factoryPromise = $injector.invoke(factory, factory, { futureState: futureState });

        return factoryPromise.then(function(fullState) {
          deregisterFutureState(); // Success; remove future state
          if (fullState) { array.push(fullState); } // Pass a chain of realized states back
          return array;
        });
      }).catch(errorHandler)
    }

    var otherwiseFunc = [ '$log', '$location',
      function otherwiseFunc($log, $location) {
        //$log.debug("Unable to map " + $location.path());
      }];

    function futureState_otherwise($injector, $location) {
      var resyncing = false;

      var lazyLoadMissingState =
        ['$rootScope', '$urlRouter', '$state',
          function lazyLoadMissingState($rootScope, $urlRouter, $state) {
            function resync() {
              resyncing = true; $urlRouter.sync(); resyncing = false;
            }
            if (!initDone) {
              // Asynchronously load state definitions, then resync URL
              initPromise().then(resync);
              initDone = true;
              return;
            }

            var futureState = findFutureState($state, { url: $location.path() });
            if (!futureState) {
              return $injector.invoke(otherwiseFunc);
            }

            // Config loaded.  Asynchronously lazy-load state definition from URL fragment, if mapped.
            lazyLoadState($injector, futureState).then(function lazyLoadedStateCallback(states) {
              states.forEach(function (state) {
                if (state && (!$state.get(state) || (state.name && !$state.get(state.name))))
                  $stateProvider.state(state);
              });
              lazyloadInProgress = false;
              resync();
            }, function lazyLoadStateAborted() {
              lazyloadInProgress = false;
              resync();
            });
          }];
      if (lazyloadInProgress) return;

      var nextFn = resyncing ? otherwiseFunc : lazyLoadMissingState;
      return $injector.invoke(nextFn);
    }

    $urlRouterProvider.otherwise(futureState_otherwise);

    $urlRouterProvider.otherwise = function(rule) {
      if (angular.isString(rule)) {
        var redirect = rule;
        rule = function () { return redirect; };
      }
      else if (!angular.isFunction(rule)) throw new Error("'rule' must be a function");
      otherwiseFunc = ['$injector', '$location', rule];
      return $urlRouterProvider;
    };

    var serviceObject = {
      getResolvePromise: function () {
        return initPromise();
      }
    };

    // Used in .run() block to init
    this.$get = [ '$injector', '$state', '$q', '$rootScope', '$urlRouter', '$timeout', '$log',
      function futureStateProvider_get($injector, $state, $q, $rootScope, $urlRouter, $timeout, $log) {
        function init() {
          $rootScope.$on("$stateNotFound", function futureState_notFound(event, unfoundState, fromState, fromParams) {
            if (lazyloadInProgress) return;
            //$log.debug("event, unfoundState, fromState, fromParams", event, unfoundState, fromState, fromParams);

            var futureState = findFutureState($state, { name: unfoundState.to });
            if (!futureState) return;

            event.preventDefault();
            var promise = lazyLoadState($injector, futureState);
            promise.then(function (states) {
              states.forEach(function (state) {
                if (state && (!$state.get(state) || (state.name && !$state.get(state.name))))
                  $stateProvider.state(state);
              });
              $state.go(unfoundState.to, unfoundState.toParams);
              lazyloadInProgress = false;
            }, function (error) {
              console.log("failed to lazy load state ", error);
              if (fromState.name) $state.go(fromState, fromParams);
              lazyloadInProgress = false;
            });
          });

          // Do this better.  Want to load remote config once, before everything else
          if (!initPromise) {
            var promises = [];
            angular.forEach(resolveFunctions, function (promiseFn) {
              promises.push($injector.invoke(promiseFn));
            });
            initPromise = function () {
              return $q.all(promises);
            };
          }

          // TODO: analyze this. I'm calling $urlRouter.sync() in two places for retry-initial-transition.
          // TODO: I should only need to do this once.  Pick the better place and remove the extra resync.
          initPromise().then(function retryInitialState() {
            $timeout(function () {
              if ($state.transition) {
                $state.transition.then(retryInitialState, retryInitialState);
              } else {
                $urlRouter.sync();
              }
            });
          });
        }

        init();

        serviceObject.state = $stateProvider.state;
        serviceObject.futureState = provider.futureState;
        serviceObject.get = provider.get;

        return serviceObject;
      }
    ];
  }

  app.provider('$futureState', _futureStateProvider);

  var statesAddedQueue = {
    state: function(state) {
      if (statesAddedQueue.$rootScope)
        statesAddedQueue.$rootScope.$broadcast("$stateAdded", state);
    },
    itsNowRuntimeOhWhatAHappyDay: function($rootScope) {
      statesAddedQueue.$rootScope = $rootScope;
    },
    $rootScope: undefined
  };

  app.config([ '$stateProvider', function($stateProvider) {
    // decorate $stateProvider.state so we can broadcast when a real state was added
    var realStateFn = $stateProvider.state;
    $stateProvider.state = function state_announce() {
      var val = realStateFn.apply($stateProvider, arguments);

      var state = angular.isObject(arguments[0]) ? arguments[0] : arguments[1];
      statesAddedQueue.state(state);
      return val;
    };
  }]);

  // inject $futureState so the service gets initialized via $get();
  app.run(['$futureState', function ($futureState, $rootScope) {
    statesAddedQueue.itsNowRuntimeOhWhatAHappyDay($rootScope);
  } ]);

})(angular);

angular.module('ct.ui.router.extras.previous', [ 'ct.ui.router.extras.core', 'ct.ui.router.extras.transition' ]).service("$previousState",
  [ '$rootScope', '$state', '$q',
    function ($rootScope, $state, $q) {
      var previous = null, lastPrevious = null, memos = {};

      $rootScope.$on("$transitionStart", function(evt, $transition$) {
        var from = $transition$.from;
        // Check if the fromState is navigable before tracking it.
        // Root state doesn't get decorated with $$state().  Doh.
        var fromState = from.state && from.state.$$state && from.state.$$state();
        function commit() { lastPrevious = null; }
        function revert() { previous = lastPrevious; }
        if (fromState) {
          lastPrevious = previous;
          previous = $transition$.from;

          $transition$.promise.then(commit)['catch'](revert);
        }
      });

      var $previousState = {
        get: function (memoName) {
          return memoName ? memos[memoName] : previous;
        },
        go: function (memoName, options) {
          var to = $previousState.get(memoName);
          if (memoName && !to) {
            return $q.reject(new Error('undefined memo'));
          }
          return $state.go(to.state, to.params, options);
        },
        memo: function (memoName, defaultStateName, defaultStateParams) {
          memos[memoName] = previous || { state: $state.get(defaultStateName), params: defaultStateParams };
        },
        forget: function (memoName) {
          if (memoName) {
            delete memos[memoName];
          } else {
            previous = undefined;
          }
        }
      };

      return $previousState;
    }
  ]
);

angular.module('ct.ui.router.extras.previous').run(['$previousState', function ($previousState) {
  // Inject $previousState so it can register $rootScope events
}]);


angular.module("ct.ui.router.extras.transition", [ 'ct.ui.router.extras.core' ]).config( [ "$provide",  function ($provide) {
      // Decorate the $state service, so we can replace $state.transitionTo()
      $provide.decorator("$state", ['$delegate', '$rootScope', '$q', '$injector',
        function ($state, $rootScope, $q, $injector) {
          // Keep an internal reference to the real $state.transitionTo function
          var $state_transitionTo = $state.transitionTo;
          // $state.transitionTo can be re-entered.  Keep track of re-entrant stack
          var transitionDepth = -1;
          var tDataStack = [];
          var restoreFnStack = [];

          // This function decorates the $injector, adding { $transition$: tData } to invoke() and instantiate() locals.
          // It returns a function that restores $injector to its previous state.
          function decorateInjector(tData) {
            var oldinvoke = $injector.invoke;
            var oldinstantiate = $injector.instantiate;
            $injector.invoke = function (fn, self, locals) {
              return oldinvoke(fn, self, angular.extend({$transition$: tData}, locals));
            };
            $injector.instantiate = function (fn, locals) {
              return oldinstantiate(fn, angular.extend({$transition$: tData}, locals));
            };

            return function restoreItems() {
              $injector.invoke = oldinvoke;
              $injector.instantiate = oldinstantiate;
            };
          }

          function popStack() {
            restoreFnStack.pop()();
            tDataStack.pop();
            transitionDepth--;
          }

          // This promise callback (for when the real transitionTo is successful) runs the restore function for the
          // current stack level, then broadcasts the $transitionSuccess event.
          function transitionSuccess(deferred, tSuccess) {
            return function successFn(data) {
              popStack();
              $rootScope.$broadcast("$transitionSuccess", tSuccess);
              deferred.resolve(data); // $transition$ deferred
              return data;
            };
          }

          // This promise callback (for when the real transitionTo fails) runs the restore function for the
          // current stack level, then broadcasts the $transitionError event.
          function transitionFailure(deferred, tFail) {
            return function failureFn(error) {
              popStack();
              $rootScope.$broadcast("$transitionError", tFail, error);
              deferred.reject(error);  // $transition$ deferred
              return $q.reject(error);
            };
          }

          // Decorate $state.transitionTo.
          $state.transitionTo = function (to, toParams, options) {
            // Create a deferred/promise which can be used earlier than UI-Router's transition promise.
            var deferred = $q.defer();
            // Place the promise in a transition data, and place it on the stack to be used in $stateChangeStart
            var tData = tDataStack[++transitionDepth] = {
              promise: deferred.promise
            };
            // placeholder restoreFn in case transitionTo doesn't reach $stateChangeStart (state not found, etc)
            restoreFnStack[transitionDepth] = function() { };
            // Invoke the real $state.transitionTo
            var tPromise = $state_transitionTo.apply($state, arguments);

            // insert our promise callbacks into the chain.
            return tPromise.then(transitionSuccess(deferred, tData), transitionFailure(deferred, tData));
          };

          // This event is handled synchronously in transitionTo call stack
          $rootScope.$on("$stateChangeStart", function (evt, toState, toParams, fromState, fromParams) {
              if (transitionDepth >= tDataStack.length) return;
              var depth = transitionDepth;
              // To/From is now normalized by ui-router.  Add this information to the transition data object.
              var tData = angular.extend(tDataStack[depth], {
                to: { state: toState, params: toParams },
                from: { state: fromState, params: fromParams }
              });

              var restoreFn = decorateInjector(tData);
              restoreFnStack[depth] = restoreFn;
              $rootScope.$broadcast("$transitionStart", tData);
            }
          );

          return $state;
        }]);
    }
  ]
);

// statevis requires d3.
(function () {
  "use strict";
  var app = angular.module("ct.ui.router.extras.statevis", [ 'ct.ui.router.extras.core', 'ct.ui.router.extras.sticky'  ]);

  app.directive('stateVis', [ '$state', '$timeout', '$interval', stateVisDirective ]);

  /**
   * This directive gets all the current states using $state.get() and displays them in a tree using D3 lib.
   * It then listens for state events and updates the tree.
   *
   * Usage:
   * <state-vis height="1000px" width="1000px"></state-vis>
   */
  function stateVisDirective($state, $timeout, $interval) {
    return {
      scope: {
        width: '@',
        height: '@'
      },
      restrict: 'AE',
      template: '<svg></svg>',
      link: function (_scope, _elem, _attrs) {
        var stateMap = {};
        var width = _scope.width || 400,
          height = _scope.height || 400;

        var tree = d3.layout.tree()
            .size([width - 20, height - 20])
            .separation(function (a, b) {
              return a.parent == b.parent ? 10 : 25;
            });

        var root = $state.get().filter(function (state) { return state.name === ""; })[0];
        var nodes = tree(root);

        root.parent = root;
        root.px = root.x = width / 2;
        root.py = root.y = height / 2;

        var activeNode = { };
        activeNode.px = activeNode.x = root.px;
        activeNode.py = activeNode.y = root.py;

        var diagonal = d3.svg.diagonal();

        var svg = d3.select(_elem.find("svg")[0])
          .attr("width", width)
          .attr("height", height)
          .append("g")
          .attr("transform", "translate(10, 10)");

        var node = svg.selectAll(".node"),
          link = svg.selectAll(".link"),
          active = svg.selectAll(".active")
          ;

        var updateInterval = 200,
          transLength = 200,
          timer = setInterval(update, updateInterval);

        function addStates(data) {
          // *********** Convert flat data into a nice tree ***************
          data = data.map(function (node) {
            return node.name === "" ? root : angular.copy(node);
          });
          angular.extend(stateMap, data.reduce(function (map, node) {
            map[node.name] = node;
            return map;
          }, {}));

          data.forEach(function (node) {
            // add to parent
            var parentName = node.name.split(/\./).slice(0, -1).join(".");
            var parent = node.name != parentName && stateMap[parentName];
            if (parent) {
              (parent.children || (parent.children = [])).push(node); // create child array if it doesn't exist
              node.px = parent.px;
              node.py = parent.py;
              nodes.push(node);
            }
          });
        }

        $interval(function () {
          _scope.states = $state.get();
          angular.forEach(nodes, function (n) {
            var s = $state.get(n.name);
            if (s) {
              n.status = s.status || 'exited';
            }
          });
//          _scope.futureStates = $futureState.get();
        }, 250);

        _scope.$watchCollection("states", function (newval, oldval) {
          var oldstates = (oldval || []).map(function (s) { return s.name; });
          addStates((newval || []).filter(function(state) { return oldstates.indexOf(state.name) == -1; } ));
//          addStates(_.reject(newval, function (state) { return _.contains(oldstates, state.name); }));
        });

//        addStates($state.get());
        update(updateInterval);

        function update() {
          // Recompute the layout and data join.
          node = node.data(tree.nodes(root), function (d) { return d.name; });
          link = link.data(tree.links(nodes), function (d) { return d.target.name; });
          active = active.data(activeNode);

          nodes.forEach(function (d) { d.y = d.depth * 70; });

          // Add entering nodes in the parent’s old position.
          var nodeEnter = node.enter();

          function stateName(node) {
            var name = node.name.split(".").pop();
            if (node.sticky) { name += " (STICKY)"; }
            if (node.deepStateRedirect) { name += " (DSR)"; }
            return name;
          }

          active.enter()
            .append("circle")
            .attr("class", "active")
            .attr("r", 13)
            .attr("cx", function (d) { return d.parent.px || 100; })
            .attr("cy", function (d) { return d.parent.py || 100; })
          ;

          nodeEnter.append("circle")
            .attr("class", "node")
            .attr("r", 9)
            .attr("cx", function (d) { return d.parent.px; })
            .attr("cy", function (d) { return d.parent.py; });

          nodeEnter.append("text")
            .attr("class", "label")
            .attr("x", function (d) { return d.parent.px; })
            .attr("y", function (d) { return d.parent.py; })
            .attr("text-anchor", function (d) { return "middle"; })
            .text(stateName)
            .style("fill-opacity", 1);


          // Add entering links in the parent’s old position.
          link.enter().insert("path", ".node")
            .attr("class", "link")
            .attr("d", function (d) {
              var o = {x: d.source.px, y: d.source.py};
              return diagonal({source: o, target: o});
            });

          // Transition nodes and links to their new positions.
          var t = svg.transition()
            .duration(transLength);

          t.selectAll(".link")
            .attr("d", diagonal);

          /* jshint -W093 */
          var circleColors = { entered: '#AF0', exited: '#777', active: '#0f0', inactive: '#55F', future: '#009' };
          t.selectAll(".node")
            .attr("cx", function (d) { return d.px = d.x; })
            .attr("cy", function (d) { return d.py = d.y; })
            .attr("r", function (d) { return d.status === 'active' ? 15 : 10; })
            .style("fill", function (d) { return circleColors[d.status] || "#FFF"; });

          t.selectAll(".label")
            .attr("x", function (d) { return d.px = d.x; })
            .attr("y", function (d) { return d.py = d.y - 15; })
            .attr("transform", function (d) { return "rotate(-25 " + d.x + " " + d.y + ")"; })
          ;

          t.selectAll(".active")
            .attr("x", function (d) { return d.px = d.x; })
            .attr("y", function (d) { return d.py = d.y - 15; });
        }
      }
    };
  }
})();


angular.module("ct.ui.router.extras",
  [
    'ct.ui.router.extras.core',
    'ct.ui.router.extras.dsr',
    'ct.ui.router.extras.future',
    'ct.ui.router.extras.previous',
    'ct.ui.router.extras.statevis',
    'ct.ui.router.extras.sticky',
    'ct.ui.router.extras.transition'
  ]);


}));