ivh-treeview.js 49.8 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

/**
 * The iVantage Treeview module
 *
 * @package ivh.treeview
 */

angular.module('ivh.treeview', []);


/**
 * Supports non-default interpolation symbols
 *
 * @package ivh.treeview
 * @copyright 2016 iVantage Health Analytics, Inc.
 */

angular.module('ivh.treeview').constant('ivhTreeviewInterpolateEndSymbol', '}}');



/**
 * Supports non-default interpolation symbols
 *
 * @package ivh.treeview
 * @copyright 2016 iVantage Health Analytics, Inc.
 */

angular.module('ivh.treeview').constant('ivhTreeviewInterpolateStartSymbol', '{{');



/**
 * Selection management logic for treeviews with checkboxes
 *
 * @private
 * @package ivh.treeview
 * @copyright 2014 iVantage Health Analytics, Inc.
 */

angular.module('ivh.treeview').directive('ivhTreeviewCheckboxHelper', [function () {
    'use strict';
    return {
        restrict: 'A',
        scope: {
            node: '=ivhTreeviewCheckboxHelper'
        },
        require: '^ivhTreeview',
        link: function (scope, element, attrs, trvw) {
            var node = scope.node
              , opts = trvw.opts()
              , indeterminateAttr = opts.indeterminateAttribute
              , selectedAttr = opts.selectedAttribute;

            // Set initial selected state of this checkbox
            scope.isSelected = node[selectedAttr];

            // Local access to the parent controller
            scope.trvw = trvw;

            // Enforce consistent behavior across browsers by making indeterminate
            // checkboxes become checked when clicked/selected using spacebar
            scope.resolveIndeterminateClick = function () {
                if (node[indeterminateAttr]) {
                    trvw.select(node, true);
                }
            };

            // Update the checkbox when the node's selected status changes
            scope.$watch('node.' + selectedAttr, function (newVal, oldVal) {
                scope.isSelected = newVal;
            });

            // Update the checkbox when the node's indeterminate status changes
            scope.$watch('node.' + indeterminateAttr, function (newVal, oldVal) {
                element.find('input').prop('indeterminate', newVal);
            });
        },
        template: [
          '<input type="checkbox"',
            'class="ivh-treeview-checkbox"',
            'ng-model="isSelected"',
            'ng-click="resolveIndeterminateClick()"',
            'ng-change="trvw.select(node, isSelected)" />'
        ].join('\n')
    };
}]);



/**
 * Wrapper for a checkbox directive
 *
 * Basically exists so folks creeting custom node templates don't need to attach
 * their node to this directive explicitly - i.e. keeps consistent interface
 * with the twistie and toggle directives.
 *
 * @package ivh.treeview
 * @copyright 2014 iVantage Health Analytics, Inc.
 */

angular.module('ivh.treeview').directive('ivhTreeviewCheckbox', [function () {
    'use strict';
    return {
        restrict: 'AE',
        require: '^ivhTreeview',
        template: '<span ivh-treeview-checkbox-helper="node"></span>'
    };
}]);


/**
 * The recursive step, output child nodes for the scope node
 *
 * @package ivh.treeview
 * @copyright 2014 iVantage Health Analytics, Inc.
 */

angular.module('ivh.treeview').directive('ivhTreeviewChildren', function () {
    'use strict';
    return {
        restrict: 'AE',
        require: '^ivhTreeviewNode',
        template: [
          '<ul ng-if="getChildren().length" class="ivh-treeview">',
            '<li ng-repeat="child in getChildren()"',
                'ng-hide="trvw.hasFilter() && !trvw.isVisible(child)"',
                'class="ivh-treeview-node"',
                'ng-class="{\'ivh-treeview-node-collapsed\': !trvw.isExpanded(child) && !trvw.isLeaf(child)}"',
                'ivh-treeview-node="child"',
                'ivh-treeview-depth="childDepth">',
            '</li>',
          '</ul>'
        ].join('\n')
    };
});


/**
 * Treeview tree node directive
 *
 * @private
 * @package ivh.treeview
 * @copyright 2014 iVantage Health Analytics, Inc.
 */

angular.module('ivh.treeview').directive('ivhTreeviewNode', ['ivhTreeviewCompiler', function (ivhTreeviewCompiler) {
    'use strict';
    return {
        restrict: 'A',
        scope: {
            node: '=ivhTreeviewNode',
            depth: '=ivhTreeviewDepth'
        },
        require: '^ivhTreeview',
        compile: function (tElement) {
            return ivhTreeviewCompiler
              .compile(tElement, function (scope, element, attrs, trvw) {
                  var node = scope.node;

                  var getChildren = scope.getChildren = function () {
                      return trvw.children(node);
                  };

                  scope.trvw = trvw;
                  scope.childDepth = scope.depth + 1;

                  // Expand/collapse the node as dictated by the expandToDepth property.
                  // Note that we will respect the expanded state of this node if it has
                  // been expanded by e.g. `ivhTreeviewMgr.expandTo` but not yet
                  // rendered.
                  if (!trvw.isExpanded(node)) {
                      trvw.expand(node, trvw.isInitiallyExpanded(scope.depth));
                  }

                  /**
                   * @todo Provide a way to opt out of this
                   */
                  scope.$watch(function () {
                      return getChildren().length > 0;
                  }, function (newVal) {
                      if (newVal) {
                          element.removeClass('ivh-treeview-node-leaf');
                      } else {
                          element.addClass('ivh-treeview-node-leaf');
                      }
                  });
              });
        }
    };
}]);



/**
 * Toggle logic for treeview nodes
 *
 * Handles expand/collapse on click. Does nothing for leaf nodes.
 *
 * @private
 * @package ivh.treeview
 * @copyright 2014 iVantage Health Analytics, Inc.
 */

angular.module('ivh.treeview').directive('ivhTreeviewToggle', [function () {
    'use strict';
    return {
        restrict: 'A',
        require: '^ivhTreeview',
        link: function (scope, element, attrs, trvw) {
            var node = scope.node;

            element.addClass('ivh-treeview-toggle');

            element.bind('click', function () {
                if (!trvw.isLeaf(node)) {
                    scope.$apply(function () {
                        trvw.toggleExpanded(node);
                        trvw.onToggle(node);
                    });
                }
            });
        }
    };
}]);

/**
 * select label logic for treeview nodes
 * modify basis on business requirements 
 */
angular.module('ivh.treeview').directive('ivhTreeviewLabelSelect', [function () {
    'use strict';
    return {
        restrict: 'A',
        require: '^ivhTreeview',
        link: function (scope, element, attrs, trvw) {
            var node = scope.node;

            element.bind('click', function () {
                $('span').removeClass('label-active');
                element.toggleClass('label-active');
                scope.$apply(function () {
                    trvw.onLabelSelect(node);
                });
            });
        }
    };
}]);


/**
 * Treeview twistie directive
 *
 * @private
 * @package ivh.treeview
 * @copyright 2014 iVantage Health Analytics, Inc.
 */

angular.module('ivh.treeview').directive('ivhTreeviewTwistie', ['$compile', 'ivhTreeviewOptions', function ($compile, ivhTreeviewOptions) {
    'use strict';

    var globalOpts = ivhTreeviewOptions();

    return {
        restrict: 'A',
        require: '^ivhTreeview',
        template: [
          '<span class="ivh-treeview-twistie">',
            '<span class="ivh-treeview-twistie-collapsed">',
              globalOpts.twistieCollapsedTpl,
            '</span>',
            '<span class="ivh-treeview-twistie-expanded">',
              globalOpts.twistieExpandedTpl,
            '</span>',
            '<span class="ivh-treeview-twistie-leaf">',
              globalOpts.twistieLeafTpl,
            '</span>',
          '</span>'
        ].join('\n'),
        link: function (scope, element, attrs, trvw) {

            if (!trvw.hasLocalTwistieTpls) {
                return;
            }

            var opts = trvw.opts()
              , $twistieContainers = element
                .children().eq(0) // Template root
                .children(); // The twistie spans

            angular.forEach([
              // Should be in the same order as elements in template
              'twistieCollapsedTpl',
              'twistieExpandedTpl',
              'twistieLeafTpl'
            ], function (tplKey, ix) {
                var tpl = opts[tplKey]
                  , tplGlobal = globalOpts[tplKey];

                // Do nothing if we don't have a new template
                if (!tpl || tpl === tplGlobal) {
                    return;
                }

                // Super gross, the template must actually be an html string, we won't
                // try too hard to enforce this, just don't shoot yourself in the foot
                // too badly and everything will be alright.
                if (tpl.substr(0, 1) !== '<' || tpl.substr(-1, 1) !== '>') {
                    tpl = '<span>' + tpl + '</span>';
                }

                var $el = $compile(tpl)(scope)
                  , $container = $twistieContainers.eq(ix);

                // Clean out global template and append the new one
                $container.html('').append($el);
            });

        }
    };
}]);


/**
 * The `ivh-treeview` directive
 *
 * A filterable tree view with checkbox support.
 *
 * Example:
 *
 * ```
 * <div
 *   ivh-treeview="myHierarchicalData">
 *   ivh-treeview-filter="myFilterText">
 * </div>
 * ```
 *
 * @package ivh.treeview
 * @copyright 2014 iVantage Health Analytics, Inc.
 */

angular.module('ivh.treeview').directive('ivhTreeview', ['ivhTreeviewMgr', function (ivhTreeviewMgr) {
    'use strict';
    return {
        restrict: 'A',
        transclude: true,
        scope: {
            // The tree data store
            root: '=ivhTreeview',

            // Specific config options
            childrenAttribute: '=ivhTreeviewChildrenAttribute',
            defaultSelectedState: '=ivhTreeviewDefaultSelectedState',
            expandToDepth: '=ivhTreeviewExpandToDepth',
            idAttribute: '=ivhTreeviewIdAttribute',
            indeterminateAttribute: '=ivhTreeviewIndeterminateAttribute',
            expandedAttribute: '=ivhTreeviewExpandedAttribute',
            labelAttribute: '=ivhTreeviewLabelAttribute',
            nodeTpl: '=ivhTreeviewNodeTpl',
            selectedAttribute: '=ivhTreeviewSelectedAttribute',
            onCbChange: '&ivhTreeviewOnCbChange',
            onToggle: '&ivhTreeviewOnToggle',
            onLabelSelect: '&ivhTreeviewOnLabelSelect',
            twistieCollapsedTpl: '=ivhTreeviewTwistieCollapsedTpl',
            twistieExpandedTpl: '=ivhTreeviewTwistieExpandedTpl',
            twistieLeafTpl: '=ivhTreeviewTwistieLeafTpl',
            useCheckboxes: '=ivhTreeviewUseCheckboxes',
            validate: '=ivhTreeviewValidate',
            visibleAttribute: '=ivhTreeviewVisibleAttribute',
            showAccessControlPanel: '=ivhTreeviewShowAccessControlPanel',
            accessList: '=ivhTreeviewAccessList',
            // Generic options object
            userOptions: '=ivhTreeviewOptions',

            // The filter
            filter: '=ivhTreeviewFilter'
        },
        controllerAs: 'trvw',
        controller: ['$scope', '$element', '$attrs', '$transclude', 'ivhTreeviewOptions', 'filterFilter', function ($scope, $element, $attrs, $transclude, ivhTreeviewOptions, filterFilter) {
            var ng = angular
              , trvw = this;

            // Merge any locally set options with those registered with hte
            // ivhTreeviewOptions provider
            var localOpts = ng.extend({}, ivhTreeviewOptions(), $scope.userOptions);

            // Two-way bound attributes (=) can be copied over directly if they're
            // non-empty
            ng.forEach([
              'childrenAttribute',
              'defaultSelectedState',
              'expandToDepth',
              'idAttribute',
              'indeterminateAttribute',
              'expandedAttribute',
              'labelAttribute',
              'nodeTpl',
              'selectedAttribute',
              'twistieCollapsedTpl',
              'twistieExpandedTpl',
              'twistieLeafTpl',
              'useCheckboxes',
              'validate',
              'visibleAttribute',
              'showAccessControlPanel',
              'accessList'
            ], function (attr) {
                if (ng.isDefined($scope[attr])) {
                    localOpts[attr] = $scope[attr];
                }
            });

            // Attrs with the `&` prefix will yield a defined scope entity even if
            // no value is specified. We must check to make sure the attribute string
            // is non-empty before copying over the scope value.
            var normedAttr = function (attrKey) {
                return 'ivhTreeview' +
                  attrKey.charAt(0).toUpperCase() +
                  attrKey.slice(1);
            };

            ng.forEach([
              'onCbChange',
              'onToggle',
              'onLabelSelect'
            ], function (attr) {
                if ($attrs[normedAttr(attr)]) {
                    localOpts[attr] = $scope[attr];
                }
            });

            // Treat the transcluded content (if there is any) as our node template
            var transcludedScope;
            $transclude(function (clone, scope) {
                var transcludedNodeTpl = '';
                angular.forEach(clone, function (c) {
                    transcludedNodeTpl += (c.innerHTML || '').trim();
                });
                if (transcludedNodeTpl.length) {
                    transcludedScope = scope;
                    localOpts.nodeTpl = transcludedNodeTpl;
                }
            });

            /**
             * Get the merged global and local options
             *
             * @return {Object} the merged options
             */
            trvw.opts = function () {
                return localOpts;
            };

            // If we didn't provide twistie templates we'll be doing a fair bit of
            // extra checks for no reason. Let's just inform down stream directives
            // whether or not they need to worry about twistie non-global templates.
            var userOpts = $scope.userOptions || {};

            /**
             * Whether or not we have local twistie templates
             *
             * @private
             */
            trvw.hasLocalTwistieTpls = !!(
              userOpts.twistieCollapsedTpl ||
              userOpts.twistieExpandedTpl ||
              userOpts.twistieLeafTpl ||
              $scope.twistieCollapsedTpl ||
              $scope.twistieExpandedTpl ||
              $scope.twistieLeafTpl);

            /**
             * Get the child nodes for `node`
             *
             * Abstracts away the need to know the actual label attribute in
             * templates.
             *
             * @param {Object} node a tree node
             * @return {Array} the child nodes
             */
            trvw.children = function (node) {
                var children = node[localOpts.childrenAttribute];
                return ng.isArray(children) ? children : [];
            };

            /**
             * Get the label for `node`
             *
             * Abstracts away the need to know the actual label attribute in
             * templates.
             *
             * @param {Object} node A tree node
             * @return {String} The node label
             */
            trvw.label = function (node) {
                return node[localOpts.labelAttribute];
            };

            /**
             * Returns `true` if this treeview has a filter
             *
             * @return {Boolean} Whether on not we have a filter
             * @private
             */
            trvw.hasFilter = function () {
                return ng.isDefined($scope.filter);
            };

            /**
             * Get the treeview filter
             *
             * @return {String} The filter string
             * @private
             */
            trvw.getFilter = function () {
                return $scope.filter || '';
            };

            /**
             * Returns `true` if current filter should hide `node`, false otherwise
             *
             * @todo Note that for object and function filters each node gets hit with
             * `isVisible` N-times where N is its depth in the tree. We may be able to
             * optimize `isVisible` in this case by:
             *
             * - On first call to `isVisible` in a given digest cycle walk the tree to
             *   build a flat array of nodes.
             * - Run the array of nodes through the filter.
             * - Build a map (`id`/$scopeId --> true) for the nodes that survive the
             *   filter
             * - On subsequent calls to `isVisible` just lookup the node id in our
             *   map.
             * - Clean the map with a $timeout (?)
             *
             * In theory the result of a call to `isVisible` could change during a
             * digest cycle as scope variables are updated... I think calls would
             * happen bottom up (i.e. from "leaf" to "root") so that might not
             * actually be an issue. Need to investigate if this ends up feeling for
             * large/deep trees.
             *
             * @param {Object} node A tree node
             * @return {Boolean} Whether or not `node` is filtered out
             */
            trvw.isVisible = function (node) {
                var filter = trvw.getFilter();

                // Quick shortcut
                if (!filter || filterFilter([node], filter).length) {
                    return true;
                }

                // If we have an object or function filter we have to check children
                // separately
                if (typeof filter === 'object' || typeof filter === 'function') {
                    var children = trvw.children(node);
                    // If any child is visible then so is this node
                    for (var ix = children.length; ix--;) {
                        if (trvw.isVisible(children[ix])) {
                            return true;
                        }
                    }
                }

                return false;
            };

            /**
             * Returns `true` if we should use checkboxes, false otherwise
             *
             * @return {Boolean} Whether or not to use checkboxes
             */
            trvw.useCheckboxes = function () {
                return localOpts.useCheckboxes;
            };

             trvw.showAccessControlPanel = function () {
                return localOpts.showAccessControlPanel;
            };

             trvw.accessList = function () {
                return localOpts.accessList;
             };

            /**
             * Select or deselect `node`
             *
             * Updates parent and child nodes appropriately, `isSelected` defaults to
             * `true`.
             *
             * @param {Object} node The node to select or deselect
             * @param {Boolean} isSelected Defaults to `true`
             */
            trvw.select = function (node, isSelected) {
                ivhTreeviewMgr.select($scope.root, node, localOpts, isSelected);
                trvw.onCbChange(node, isSelected);
            };

            /**
             * Get the selected state of `node`
             *
             * @param {Object} node The node to get the selected state of
             * @return {Boolean} `true` if `node` is selected
             */
            trvw.isSelected = function (node) {
                return node[localOpts.selectedAttribute];
            };

            /**
             * Toggle the selected state of `node`
             *
             * Updates parent and child node selected states appropriately.
             *
             * @param {Object} node The node to update
             */
            trvw.toggleSelected = function (node) {
                var isSelected = !node[localOpts.selectedAttribute];
                trvw.select(node, isSelected);
            };

            /**
             * Expand or collapse a given node
             *
             * `isExpanded` is optional and defaults to `true`.
             *
             * @param {Object} node The node to expand/collapse
             * @param {Boolean} isExpanded Whether to expand (`true`) or collapse
             */
            trvw.expand = function (node, isExpanded) {
                ivhTreeviewMgr.expand($scope.root, node, localOpts, isExpanded);
            };

            /**
             * Get the expanded state of a given node
             *
             * @param {Object} node The node to check the expanded state of
             * @return {Boolean}
             */
            trvw.isExpanded = function (node) {
                return node[localOpts.expandedAttribute];
            };

            /**
             * Toggle the expanded state of a given node
             *
             * @param {Object} node The node to toggle
             */
            trvw.toggleExpanded = function (node) {
                trvw.expand(node, !trvw.isExpanded(node));
            };

            /**
             * Whether or not nodes at `depth` should be expanded by default
             *
             * Use -1 to fully expand the tree by default.
             *
             * @param {Integer} depth The depth to expand to
             * @return {Boolean} Whether or not nodes at `depth` should be expanded
             * @private
             */
            trvw.isInitiallyExpanded = function (depth) {
                var expandTo = localOpts.expandToDepth === -1 ?
                    Infinity : localOpts.expandToDepth;
                return depth < expandTo;
            };

            /**
             * Returns `true` if `node` is a leaf node
             *
             * @param {Object} node The node to check
             * @return {Boolean} `true` if `node` is a leaf
             */
            trvw.isLeaf = function (node) {
                return trvw.children(node).length === 0;
            };

            /**
             * Get the tree node template
             *
             * @return {String} The node template
             * @private
             */
            trvw.getNodeTpl = function () {
                return localOpts.nodeTpl;
            };

            /**
             * Get the root of the tree
             *
             * Mostly a helper for custom templates
             *
             * @return {Object|Array} The tree root
             * @private
             */
            trvw.root = function () {
                return $scope.root;
            };

            /**
             * Call the registered toggle handler
             *
             * Handler will get a reference to `node` and the root of the tree.
             *
             * @param {Object} node Tree node to pass to the handler
             * @private
             */
            trvw.onToggle = function (node) {
                if (localOpts.onToggle) {
                    var locals = {
                        ivhNode: node,
                        ivhIsExpanded: trvw.isExpanded(node),
                        ivhTree: $scope.root
                    };
                    localOpts.onToggle(locals);
                }
            };

            trvw.onLabelSelect = function (node) {
                if (localOpts.onLabelSelect) {
                    var locals = {
                        ivhNode: node,
                        ivhIsExpanded: trvw.isExpanded(node),
                        ivhTree: $scope.root
                    };
                    localOpts.onLabelSelect(locals);
                }
            };

            /**
             * Call the registered selection change handler
             *
             * Handler will get a reference to `node`, the new selected state of
             * `node, and the root of the tree.
             *
             * @param {Object} node Tree node to pass to the handler
             * @param {Boolean} isSelected Selected state for `node`
             * @private
             */
            trvw.onCbChange = function (node, isSelected) {
                if (localOpts.onCbChange) {
                    var locals = {
                        ivhNode: node,
                        ivhIsSelected: isSelected,
                        ivhTree: $scope.root
                    };
                    localOpts.onCbChange(locals);
                }
            };
        }],
        link: function (scope, element, attrs) {
            var opts = scope.trvw.opts();

            // Allow opt-in validate on startup
            if (opts.validate) {
                ivhTreeviewMgr.validate(scope.root, opts);
            }
        },
        template: [
          '<ul class="ivh-treeview">',
            '<li ng-repeat="child in root | ivhTreeviewAsArray"',
                'ng-hide="trvw.hasFilter() && !trvw.isVisible(child)"',
                'class="ivh-treeview-node"',
                'ng-class="{\'ivh-treeview-node-collapsed\': !trvw.isExpanded(child) && !trvw.isLeaf(child)}"',
                'ivh-treeview-node="child"',
                'ivh-treeview-depth="0">',
            '</li>',
          '</ul>'
        ].join('\n')
    };
}]);


angular.module('ivh.treeview').filter('ivhTreeviewAsArray', function () {
    'use strict';
    return function (arr) {
        if (!angular.isArray(arr) && angular.isObject(arr)) {
            return [arr];
        }
        return arr;
    };
});


/**
 * Breadth first searching for treeview data stores
 *
 * @package ivh.treeview
 * @copyright 2014 iVantage Health Analytics, Inc.
 */

angular.module('ivh.treeview').factory('ivhTreeviewBfs', ['ivhTreeviewOptions', function (ivhTreeviewOptions) {
    'use strict';

    var ng = angular;

    /**
     * Breadth first search of `tree`
     *
     * `opts` is optional and may override settings from `ivhTreeviewOptions.options`.
     * The callback `cb` will be invoked on each node in the tree as we traverse,
     * if it returns `false` traversal of that branch will not continue. The
     * callback is given the current node as the first parameter and the node
     * ancestors, from closest to farthest, as an array in the second parameter.
     *
     * @param {Array|Object} tree The tree data
     * @param {Object} opts [optional] Settings overrides
     * @param {Function} cb [optional] Callback to run against each node
     */
    return function (tree, opts, cb) {
        if (arguments.length === 2 && ng.isFunction(opts)) {
            cb = opts;
            opts = {};
        }
        opts = angular.extend({}, ivhTreeviewOptions(), opts);
        cb = cb || ng.noop;

        var queue = []
          , childAttr = opts.childrenAttribute
          , next, node, parents, ix, numChildren;

        if (ng.isArray(tree)) {
            ng.forEach(tree, function (n) {
                // node and parents
                queue.push([n, []]);
            });
            next = queue.shift();
        } else {
            // node and parents
            next = [tree, []];
        }

        while (next) {
            node = next[0];
            parents = next[1];
            // cb might return `undefined` so we have to actually check for equality
            // against `false`
            if (cb(node, parents) !== false) {
                if (node[childAttr] && ng.isArray(node[childAttr])) {
                    numChildren = node[childAttr].length;
                    for (ix = 0; ix < numChildren; ix++) {
                        queue.push([node[childAttr][ix], [node].concat(parents)]);
                    }
                }
            }
            next = queue.shift();
        }
    };
}]);


/**
 * Compile helper for treeview nodes
 *
 * Defers compilation until after linking parents. Otherwise our treeview
 * compilation process would recurse indefinitely.
 *
 * Thanks to http://stackoverflow.com/questions/14430655/recursion-in-angular-directives
 *
 * @private
 * @package ivh.treeview
 * @copyright 2014 iVantage Health Analytics, Inc.
 */

angular.module('ivh.treeview').factory('ivhTreeviewCompiler', ['$compile', function ($compile) {
    'use strict';
    return {
        /**
         * Manually compiles the element, fixing the recursion loop.
         * @param {Object} element The angular element or template
         * @param {Function} link [optional] A post-link function, or an object with function(s) registered via pre and post properties.
         * @returns An object containing the linking functions.
         */
        compile: function (element, link) {
            // Normalize the link parameter
            if (angular.isFunction(link)) {
                link = { post: link };
            }

            var compiledContents;
            return {
                pre: (link && link.pre) ? link.pre : null,
                /**
                 * Compiles and re-adds the contents
                 */
                post: function (scope, element, attrs, trvw) {
                    // Compile our template
                    if (!compiledContents) {
                        compiledContents = $compile(trvw.getNodeTpl());
                    }
                    // Add the compiled template
                    compiledContents(scope, function (clone) {
                        element.append(clone);
                    });

                    // Call the post-linking function, if any
                    if (link && link.post) {
                        link.post.apply(null, arguments);
                    }
                }
            };
        }
    };
}]);


/**
 * Manager for treeview data stores
 *
 * Used to assist treeview operations, e.g. selecting or validating a tree-like
 * collection.
 *
 * @package ivh.treeview
 * @copyright 2014 iVantage Health Analytics, Inc.
 */

angular.module('ivh.treeview')
  .factory('ivhTreeviewMgr', ['ivhTreeviewOptions', 'ivhTreeviewBfs', function (ivhTreeviewOptions, ivhTreeviewBfs) {
      'use strict';

      var ng = angular
        , options = ivhTreeviewOptions()
        , exports = {};

      // The make* methods and validateParent need to be bound to an options
      // object
      var makeDeselected = function (node) {
          node[this.selectedAttribute] = false;
          node[this.indeterminateAttribute] = false;
      };

      var makeSelected = function (node) {
          node[this.selectedAttribute] = true;
          node[this.indeterminateAttribute] = false;
      };

      var validateParent = function (node) {
          var children = node[this.childrenAttribute]
            , selectedAttr = this.selectedAttribute
            , indeterminateAttr = this.indeterminateAttribute
            , numSelected = 0
            , numIndeterminate = 0;
          ng.forEach(children, function (n, ix) {
              if (n[selectedAttr]) {
                  numSelected++;
              } else {
                  if (n[indeterminateAttr]) {
                      numIndeterminate++;
                  }
              }
          });

          if (0 === numSelected && 0 === numIndeterminate) {
              node[selectedAttr] = false;
              node[indeterminateAttr] = false;
          } else if (numSelected === children.length) {
              node[selectedAttr] = true;
              node[indeterminateAttr] = false;
          } else {
              node[selectedAttr] = false;
              node[indeterminateAttr] = true;
          }
      };

      var findNode = function (tree, node, opts, cb) {
          var useId = isId(node)
            , proceed = true
            , idAttr = opts.idAttribute;

          // Our return values
          var foundNode = null
            , foundParents = [];

          ivhTreeviewBfs(tree, opts, function (n, p) {
              var isNode = proceed && (useId ?
                node === n[idAttr] :
                node === n);

              if (isNode) {
                  // I've been looking for you all my life
                  proceed = false;
                  foundNode = n;
                  foundParents = p;
              }

              return proceed;
          });

          return cb(foundNode, foundParents);
      };

      var isId = function (val) {
          return ng.isString(val) || ng.isNumber(val);
      };

      /**
       * Select (or deselect) a tree node
       *
       * This method will update the rest of the tree to account for your change.
       *
       * You may alternatively pass an id as `node`, in which case the tree will
       * be searched for your item.
       *
       * @param {Object|Array} tree The tree data
       * @param {Object|String} node The node (or id) to (de)select
       * @param {Object} opts [optional] Options to override default options with
       * @param {Boolean} isSelected [optional] Whether or not to select `node`, defaults to `true`
       * @return {Object} Returns the ivhTreeviewMgr instance for chaining
       */
      exports.select = function (tree, node, opts, isSelected) {
          if (arguments.length > 2) {
              if (typeof opts === 'boolean') {
                  isSelected = opts;
                  opts = {};
              }
          }
          opts = ng.extend({}, options, opts);
          isSelected = ng.isDefined(isSelected) ? isSelected : true;

          var useId = isId(node)
            , proceed = true
            , idAttr = opts.idAttribute;

          ivhTreeviewBfs(tree, opts, function (n, p) {
              var isNode = proceed && (useId ?
                node === n[idAttr] :
                node === n);

              if (isNode) {
                  // I've been looking for you all my life
                  proceed = false;

                  var cb = isSelected ?
                    makeSelected.bind(opts) :
                    makeDeselected.bind(opts);

                  ivhTreeviewBfs(n, opts, cb);
                  ng.forEach(p, validateParent.bind(opts));
              }

              return proceed;
          });

          return exports;
      };

      /**
       * Select all nodes in a tree
       *
       * `opts` will default to an empty object, `isSelected` defaults to `true`.
       *
       * @param {Object|Array} tree The tree data
       * @param {Object} opts [optional] Default options overrides
       * @param {Boolean} isSelected [optional] Whether or not to select items
       * @return {Object} Returns the ivhTreeviewMgr instance for chaining
       */
      exports.selectAll = function (tree, opts, isSelected) {
          if (arguments.length > 1) {
              if (typeof opts === 'boolean') {
                  isSelected = opts;
                  opts = {};
              }
          }

          opts = ng.extend({}, options, opts);
          isSelected = ng.isDefined(isSelected) ? isSelected : true;

          var selectedAttr = opts.selectedAttribute
            , indeterminateAttr = opts.indeterminateAttribute;

          ivhTreeviewBfs(tree, opts, function (node) {
              node[selectedAttr] = isSelected;
              node[indeterminateAttr] = false;
          });

          return exports;
      };

      /**
       * Select or deselect each of the passed items
       *
       * Eventually it would be nice if this did something more intelligent than
       * just calling `select` on each item in the array...
       *
       * @param {Object|Array} tree The tree data
       * @param {Array} nodes The array of nodes or node ids
       * @param {Object} opts [optional] Default options overrides
       * @param {Boolean} isSelected [optional] Whether or not to select items
       * @return {Object} Returns the ivhTreeviewMgr instance for chaining
       */
      exports.selectEach = function (tree, nodes, opts, isSelected) {
          /**
           * @todo Surely we can do something better than this...
           */
          ng.forEach(nodes, function (node) {
              exports.select(tree, node, opts, isSelected);
          });
          return exports;
      };

      /**
       * Deselect a tree node
       *
       * Delegates to `ivhTreeviewMgr.select` with `isSelected` set to `false`.
       *
       * @param {Object|Array} tree The tree data
       * @param {Object|String} node The node (or id) to (de)select
       * @param {Object} opts [optional] Options to override default options with
       * @return {Object} Returns the ivhTreeviewMgr instance for chaining
       */
      exports.deselect = function (tree, node, opts) {
          return exports.select(tree, node, opts, false);
      };

      /**
       * Deselect all nodes in a tree
       *
       * Delegates to `ivhTreeviewMgr.selectAll` with `isSelected` set to `false`.
       *
       * @param {Object|Array} tree The tree data
       * @param {Object} opts [optional] Default options overrides
       * @return {Object} Returns the ivhTreeviewMgr instance for chaining
       */
      exports.deselectAll = function (tree, opts) {
          return exports.selectAll(tree, opts, false);
      };

      /**
       * Deselect each of the passed items
       *
       * Delegates to `ivhTreeviewMgr.selectEach` with `isSelected` set to
       * `false`.
       *
       * @param {Object|Array} tree The tree data
       * @param {Array} nodes The array of nodes or node ids
       * @param {Object} opts [optional] Default options overrides
       * @return {Object} Returns the ivhTreeviewMgr instance for chaining
       */
      exports.deselectEach = function (tree, nodes, opts) {
          return exports.selectEach(tree, nodes, opts, false);
      };

      /**
       * Validate tree for parent/child selection consistency
       *
       * Assumes `bias` as default selected state. The first element with
       * `node.select !== bias` will be assumed correct. For example, if `bias` is
       * `true` (the default) we'll traverse the tree until we come to an
       * unselected node at which point we stop and deselect each of that node's
       * children (and their children, etc.).
       *
       * Indeterminate states will also be resolved.
       *
       * @param {Object|Array} tree The tree data
       * @param {Object} opts [optional] Options to override default options with
       * @param {Boolean} bias [optional] Default selected state
       * @return {Object} Returns the ivhTreeviewMgr instance for chaining
       */
      exports.validate = function (tree, opts, bias) {
          if (!tree) {
              // Guard against uninitialized trees
              return exports;
          }

          if (arguments.length > 1) {
              if (typeof opts === 'boolean') {
                  bias = opts;
                  opts = {};
              }
          }
          opts = ng.extend({}, options, opts);
          bias = ng.isDefined(bias) ? bias : opts.defaultSelectedState;

          var selectedAttr = opts.selectedAttribute
            , indeterminateAttr = opts.indeterminateAttribute;

          ivhTreeviewBfs(tree, opts, function (node, parents) {
              if (ng.isDefined(node[selectedAttr]) && node[selectedAttr] !== bias) {
                  exports.select(tree, node, opts, !bias);
                  return false;
              } else {
                  node[selectedAttr] = bias;
                  node[indeterminateAttr] = false;
              }
          });

          return exports;
      };

      /**
       * Expand/collapse a given tree node
       *
       * `node` may be either an actual tree node object or a node id.
       *
       * `opts` may override any of the defaults set by `ivhTreeviewOptions`.
       *
       * @param {Object|Array} tree The tree data
       * @param {Object|String} node The node (or id) to expand/collapse
       * @param {Object} opts [optional] Options to override default options with
       * @param {Boolean} isExpanded [optional] Whether or not to expand `node`, defaults to `true`
       * @return {Object} Returns the ivhTreeviewMgr instance for chaining
       */
      exports.expand = function (tree, node, opts, isExpanded) {
          if (arguments.length > 2) {
              if (typeof opts === 'boolean') {
                  isExpanded = opts;
                  opts = {};
              }
          }
          opts = ng.extend({}, options, opts);
          isExpanded = ng.isDefined(isExpanded) ? isExpanded : true;

          var useId = isId(node)
            , expandedAttr = opts.expandedAttribute;

          if (!useId) {
              // No need to do any searching if we already have the node in hand
              node[expandedAttr] = isExpanded;
              return exports;
          }

          return findNode(tree, node, opts, function (n, p) {
              n[expandedAttr] = isExpanded;
              return exports;
          });
      };

      /**
       * Expand/collapse a given tree node and its children
       *
       * `node` may be either an actual tree node object or a node id. You may
       * leave off `node` entirely to expand/collapse the entire tree, however, if
       * you specify a value for `opts` or `isExpanded` you must provide a value
       * for `node`.
       *
       * `opts` may override any of the defaults set by `ivhTreeviewOptions`.
       *
       * @param {Object|Array} tree The tree data
       * @param {Object|String} node [optional*] The node (or id) to expand/collapse recursively
       * @param {Object} opts [optional] Options to override default options with
       * @param {Boolean} isExpanded [optional] Whether or not to expand `node`, defaults to `true`
       * @return {Object} Returns the ivhTreeviewMgr instance for chaining
       */
      exports.expandRecursive = function (tree, node, opts, isExpanded) {
          if (arguments.length > 2) {
              if (typeof opts === 'boolean') {
                  isExpanded = opts;
                  opts = {};
              }
          }
          node = ng.isDefined(node) ? node : tree;
          opts = ng.extend({}, options, opts);
          isExpanded = ng.isDefined(isExpanded) ? isExpanded : true;

          var useId = isId(node)
            , expandedAttr = opts.expandedAttribute
            , branch;

          // If we have an ID first resolve it to an actual node in the tree
          if (useId) {
              findNode(tree, node, opts, function (n, p) {
                  branch = n;
              });
          } else {
              branch = node;
          }

          if (branch) {
              ivhTreeviewBfs(branch, opts, function (n, p) {
                  n[expandedAttr] = isExpanded;
              });
          }

          return exports;
      };

      /**
       * Collapse a given tree node
       *
       * Delegates to `exports.expand` with `isExpanded` set to `false`.
       *
       * @param {Object|Array} tree The tree data
       * @param {Object|String} node The node (or id) to collapse
       * @param {Object} opts [optional] Options to override default options with
       * @return {Object} Returns the ivhTreeviewMgr instance for chaining
       */
      exports.collapse = function (tree, node, opts) {
          return exports.expand(tree, node, opts, false);
      };

      /**
       * Collapse a given tree node and its children
       *
       * Delegates to `exports.expandRecursive` with `isExpanded` set to `false`.
       *
       * @param {Object|Array} tree The tree data
       * @param {Object|String} node The node (or id) to expand/collapse recursively
       * @param {Object} opts [optional] Options to override default options with
       * @return {Object} Returns the ivhTreeviewMgr instance for chaining
       */
      exports.collapseRecursive = function (tree, node, opts, isExpanded) {
          return exports.expandRecursive(tree, node, opts, false);
      };

      /**
       * Expand[/collapse] all parents of a given node, i.e. "reveal" the node
       *
       * @param {Object|Array} tree The tree data
       * @param {Object|String} node The node (or id) to expand to
       * @param {Object} opts [optional] Options to override default options with
       * @param {Boolean} isExpanded [optional] Whether or not to expand parent nodes
       * @return {Object} Returns the ivhTreeviewMgr instance for chaining
       */
      exports.expandTo = function (tree, node, opts, isExpanded) {
          if (arguments.length > 2) {
              if (typeof opts === 'boolean') {
                  isExpanded = opts;
                  opts = {};
              }
          }
          opts = ng.extend({}, options, opts);
          isExpanded = ng.isDefined(isExpanded) ? isExpanded : true;

          var expandedAttr = opts.expandedAttribute;

          var expandCollapseNode = function (n) {
              n[expandedAttr] = isExpanded;
          };

          // Even if wer were given the actual node and not its ID we must still
          // traverse the tree to find that node's parents.
          return findNode(tree, node, opts, function (n, p) {
              ng.forEach(p, expandCollapseNode);
              return exports;
          });
      };

      /**
       * Collapse all parents of a give node
       *
       * Delegates to `exports.expandTo` with `isExpanded` set to `false`.
       *
       * @param {Object|Array} tree The tree data
       * @param {Object|String} node The node (or id) to expand to
       * @param {Object} opts [optional] Options to override default options with
       * @return {Object} Returns the ivhTreeviewMgr instance for chaining
       */
      exports.collapseParents = function (tree, node, opts) {
          return exports.expandTo(tree, node, opts, false);
      };

      return exports;
  }
  ]);


/**
 * Global options for ivhTreeview
 *
 * @package ivh.treeview
 * @copyright 2014 iVantage Health Analytics, Inc.
 */

angular.module('ivh.treeview').provider('ivhTreeviewOptions', [
    'ivhTreeviewInterpolateStartSymbol', 'ivhTreeviewInterpolateEndSymbol',
    function (ivhTreeviewInterpolateStartSymbol, ivhTreeviewInterpolateEndSymbol) {
        'use strict';

        var symbolStart = ivhTreeviewInterpolateStartSymbol
          , symbolEnd = ivhTreeviewInterpolateEndSymbol;

        var options = {
            /**
             * ID attribute
             *
             * For selecting nodes by identifier rather than reference
             */
            idAttribute: 'id',

            /**
             * Collection item attribute to use for labels
             */
            labelAttribute: 'label',

            /**
             * Collection item attribute to use for child nodes
             */
            childrenAttribute: 'children',

            /**
             * Collection item attribute to use for selected state
             */
            selectedAttribute: 'selected',

            /**
             * Controls whether branches are initially expanded or collapsed
             *
             * A value of `0` means the tree will be entirely collapsd (the default
             * state) otherwise branches will be expanded up to the specified depth. Use
             * `-1` to have the tree entirely expanded.
             */
            expandToDepth: 0,

            /**
             * Whether or not to use checkboxes
             *
             * If `false` the markup to support checkboxes is not included in the
             * directive.
             */
            useCheckboxes: true,

            /**
             * Whether or not directive should validate treestore on startup
             */
            validate: true,

            /**
             * Collection item attribute to track intermediate states
             */
            indeterminateAttribute: '__ivhTreeviewIndeterminate',

            /**
             * Collection item attribute to track expanded status
             */
            expandedAttribute: '__ivhTreeviewExpanded',

            /**
             * Default selected state when validating
             */
            defaultSelectedState: true,

            /**
             * Template for expanded twisties
             */
            twistieExpandedTpl: '(-)',

            /**
             * Template for collapsed twisties
             */
            twistieCollapsedTpl: '(+)',

            /**
             * Template for leaf twisties (i.e. no children)
             */
            twistieLeafTpl: 'o',

            showAccessControlPanel: false,

            accessList:[],

            /**
             * Template for tree nodes
             * '<span class="ivh-treeview-node-label" ivh-treeview-toggle>',
             */
            nodeTpl: [
              '<div class="ivh-treeview-node-content" title="{{trvw.label(node)}}">',
                '<span ivh-treeview-toggle>',
                  '<span class="ivh-treeview-twistie-wrapper" ivh-treeview-twistie></span>',
                '</span>',
                '<span class="ivh-treeview-checkbox-wrapper" ng-if="trvw.useCheckboxes()"',
                    'ivh-treeview-checkbox>',
                '</span>',
                '<span class="ivh-treeview-node-label" ivh-treeview-label-select>',
                  '{{trvw.label(node)}}',
                '</span>',

                '<span style="padding:2px 20px;" ng-if=" trvw.showAccessControlPanel()">|',
                   '<span ng-repeat="item in trvw.accessList()">',
                        '<input ng-model="item" type="checkbox"/>{{item}}',
                   '</span>',
                '</span>',

                '<div ivh-treeview-children></div>',
              '</div>'
            ].join('\n')
            .replace(new RegExp('{{', 'g'), symbolStart)
            .replace(new RegExp('}}', 'g'), symbolEnd)
        };

        /**
         * Update global options
         *
         * @param {Object} opts options object to override defaults with
         */
        this.set = function (opts) {
            angular.extend(options, opts);
        };

        this.$get = function () {
            /**
             * Get a copy of the global options
             *
             * @return {Object} The options object
             */
            return function () {
                return angular.copy(options);
            };
        };
    }]);