Open-ILS/web/js/ui/default/staff/cat/services/marcedit.js

   1 /**
   2  *  A MARC editor...
   3  */
   4
   5 angular.module('egMarcMod', ['egCoreMod', 'ui.bootstrap'])
   6
   7 .directive("egContextMenuItem", ['$timeout',function ($timeout) {
   8     return {
   9         restrict: 'E',
  10         replace: true,
  11         template: '<li><a ng-click="setContent(item.value,item.action)">{{item.label}}</a></li>',
  12         scope: { item: '=', content: '=' },
  13         controller: ['$scope','$element',
  14             function ($scope , $element) {
  15                 if (!$scope.item.label) $scope.item.label = $scope.item.value;
  16                 if ($scope.item.divider) {
  17                     $element.style.borderTop = 'solid 1px';
  18                 }
  19
  20                 $scope.setContent = function (v, a) {
  21                     var replace_with = v;
  22                     if (a) replace_with = a($scope,$element,$scope.item.value,$scope.$parent.$parent.content);
  23                     $timeout(function(){
  24                         $scope.$parent.$parent.$apply(function(){
  25                             $scope.$parent.$parent.content = replace_with
  26                         })
  27                     }, 0);
  28                     $($element).parent().css({display: 'none'});
  29                 }
  30             }
  31         ]
  32     }
  33 }])
  34
  35 .directive("egMarcEditEditable", ['$timeout', '$compile', '$document', function ($timeout, $compile, $document) {
  36     return {
  37         restrict: 'E',
  38         replace: true,
  39         template: '<input '+
  40                       'style="font-family: \'Lucida Console\', Monaco, monospace;" '+
  41                       'ng-model="content" '+
  42                       'size="{{content.length * 1.1}}" '+
  43                       'maxlength="{{max}}" '+
  44                       'class="" '+
  45                       'type="text" '+
  46                   '/>',
  47         scope: {
  48             field: '=',
  49             onKeydown: '=',
  50             subfield: '=',
  51             content: '=',
  52             contextItemContainer: '@',
  53             max: '@',
  54             itype: '@'
  55         },
  56         controller : ['$scope',
  57             function ( $scope ) {
  58
  59 /* XXX Example, for testing.  We'll get this from the tag-table services for realz
  60  *
  61                 if (!$scope.contextItemContainer) {
  62                     $scope.contextItemContainer = "default_context";
  63                     $scope[$scope.contextItemContainer] = [
  64                         { value: 'a' },
  65                         { value: 'b' },
  66                         { value: 'c' },
  67                     ];
  68                 }
  69
  70  *
  71  */
  72
  73                 if ($scope.contextItemContainer)
  74                     $scope.item_container = $scope[$scope.contextItemContainer];
  75
  76                 $scope.showContext = function (event) {
  77                     if ($scope.context_menu_element) {
  78                         console.log('Reshowing context menu...');
  79                         $($scope.context_menu_element).css({ display: 'block', top: event.pageY, left: event.pageX });
  80                         $('body').on('click.context_menu',function() {
  81                             $($scope.context_menu_element).css('display','none');
  82                             $('body').off('click.context_menu');
  83                         });
  84                         return false;
  85                     }
  86
  87                     if (angular.isArray($scope.item_container)) { // we have a list of values or transforms
  88                         console.log('Showing context menu...');
  89
  90                         var tmpl =
  91                             '<ul class="dropdown-menu" role="menu">'+
  92                                 '<eg-context-menu-item ng-repeat="item in item_container" item="item" content="content"/>'+
  93                             '</ul>';
  94
  95                         var tnode = angular.element(tmpl);
  96                         $document.find('body').append(tnode);
  97
  98                         $(tnode).css({
  99                             display: 'block',
 100                             top: event.pageY,
 101                             left: event.pageX
 102                         });
 103
 104                         $scope.context_menu_element = tnode;
 105
 106                         $timeout(function() {
 107                             var e = $compile(tnode)($scope);
 108                         }, 0);
 109
 110
 111                         $('body').on('click.context_menu',function() {
 112                             $(tnode).css('display','none');
 113                             $('body').off('click.context_menu');
 114                         });
 115
 116                         return false;
 117                     }
 118
 119                     return true;
 120                 }
 121
 122             }
 123         ],
 124         link: function (scope, element, attrs) {
 125
 126             if (scope.onKeydown) element.bind('keydown', {scope : scope}, scope.onKeydown);
 127
 128             element.bind('change', function (e) { element.size = scope.max || parseInt(scope.content.length * 1.1) });
 129
 130             if (scope.contextItemContainer && angular.isArray(scope[scope.contextItemContainer]))
 131                 element.bind('contextmenu', scope.showContext);
 132         }
 133     }
 134 }])
 135
 136 .directive("egMarcEditSubfield", function () {
 137     return {
 138         transclude: true,
 139         restrict: 'E',
 140         template: '<span>'+
 141                     '<span><label class="marcedit marcsfcodedelimiter"'+
 142                         'for="r{{field.record.subfield(\'901\',\'c\')[1]}}f{{field.position}}s{{subfield[2]}}code" '+
 143                         '>‡</label><eg-marc-edit-editable '+
 144                         'itype="sfc" '+
 145                         'class="marcedit marcsf marcsfcode" '+
 146                         'field="field" '+
 147                         'subfield="subfield" '+
 148                         'content="subfield[0]" '+
 149                         'max="1" '+
 150                         'on-keydown="onKeydown" '+
 151                         'id="r{{field.record.subfield(\'901\',\'c\')[1]}}f{{field.position}}s{{subfield[2]}}code" '+
 152                     '/></span>'+
 153                     '<span><eg-marc-edit-editable '+
 154                         'itype="sfv" '+
 155                         'class="marcedit marcsf marcsfvalue" '+
 156                         'field="field" '+
 157                         'subfield="subfield" '+
 158                         'content="subfield[1]" '+
 159                         'on-keydown="onKeydown" '+
 160                         'id="r{{field.record.subfield(\'901\',\'c\')[1]}}f{{field.position}}s{{subfield[2]}}value" '+
 161                     '/></span>'+
 162                   '</span>',
 163         scope: { field: "=", subfield: "=", onKeydown: '=' },
 164         replace: false
 165     }
 166 })
 167
 168 .directive("egMarcEditInd", function () {
 169     return {
 170         transclude: true,
 171         restrict: 'E',
 172         template: '<span><eg-marc-edit-editable '+
 173                       'itype="ind" '+
 174                       'class="marcedit marcind" '+
 175                       'field="field" '+
 176                       'content="ind" '+
 177                       'max="1" '+
 178                       'on-keydown="onKeydown" '+
 179                       'id="r{{field.record.subfield(\'901\',\'c\')[1]}}f{{field.position}}i{{indNumber}}"'+
 180                       '/></span>',
 181         scope: { ind : '=', field: '=', onKeydown: '=', indNumber: '@' },
 182         replace: false,
 183     }
 184 })
 185
 186 .directive("egMarcEditTag", function () {
 187     return {
 188         transclude: true,
 189         restrict: 'E',
 190         template: '<span><eg-marc-edit-editable '+
 191                       'itype="tag" '+
 192                       'class="marcedit marctag" '+
 193                       'field="field" '+
 194                       'content="tag" '+
 195                       'max="3" '+
 196                       'on-keydown="onKeydown" '+
 197                       'id="r{{field.record.subfield(\'901\',\'c\')[1]}}f{{field.position}}tag"'+
 198                       '/></span>',
 199         scope: { tag : '=', field: '=', onKeydown: '=' },
 200         replace: false
 201     }
 202 })
 203
 204 .directive("egMarcEditDatafield", function () {
 205     return {
 206         transclude: true,
 207         restrict: 'E',
 208         template: '<div>'+
 209                     '<span><eg-marc-edit-tag field="field" tag="field.tag" on-keydown="onKeydown"/></span>'+
 210                     '<span><eg-marc-edit-ind field="field" ind="field.ind1" on-keydown="onKeydown" ind-number="1"/></span>'+
 211                     '<span><eg-marc-edit-ind field="field" ind="field.ind2" on-keydown="onKeydown" ind-number="2"/></span>'+
 212                     '<span><eg-marc-edit-subfield ng-repeat="subfield in field.subfields" subfield="subfield" field="field" on-keydown="onKeydown"/></span>'+
 213                   '</div>',
 214         scope: { field: "=", onKeydown: '=' }
 215     }
 216 })
 217
 218 .directive("egMarcEditControlfield", function () {
 219     return {
 220         transclude: true,
 221         restrict: 'E',
 222         template: '<div>'+
 223                     '<span><eg-marc-edit-tag field="field" tag="field.tag" on-keydown="onKeydown"/></span>'+
 224                     '<span><eg-marc-edit-editable '+
 225                       'itype="cfld" '+
 226                       'field="field" '+
 227                       'class="marcedit marcdata" '+
 228                       'content="field.data" '+
 229                       'on-keydown="onKeydown" '+
 230                       'id="r{{field.record.subfield(\'901\',\'c\')[1]}}f{{field.position}}data"'+
 231                       '/></span>'+
 232                   '</div>',
 233         scope: { field: "=", onKeydown: '=' }
 234     }
 235 })
 236
 237 .directive("egMarcEditLeader", function () {
 238     return {
 239         transclude: true,
 240         restrict: 'E',
 241         template: '<div>'+
 242                     '<span><eg-marc-edit-editable '+
 243                       'class="marcedit marctag" '+
 244                       'content="tag" '+
 245                       'on-keydown="onKeydown" '+
 246                       'id="leadertag" '+
 247                       'disabled="disabled"'+
 248                       '/></span>'+
 249                     '<span><eg-marc-edit-editable '+
 250                       'class="marcedit marcdata" '+
 251                       'itype="ldr" '+
 252                       'max="{{record.leader.length}}" '+
 253                       'content="record.leader" '+
 254                       'id="r{{record.subfield(\'901\',\'c\')[1]}}leaderdata" '+
 255                       'on-keydown="onKeydown"'+
 256                       '/></span>'+
 257                   '</div>',
 258         controller : ['$scope',
 259             function ( $scope ) {
 260                 $scope.tag = 'LDR';
 261             }
 262         ],
 263         scope: { record: "=", onKeydown: '=' }
 264     }
 265 })
 266
 267 /// TODO: fixed field editor and such
 268 .directive("egMarcEditRecord", function () {
 269     return {
 270         template: '<form ng-submit="saveRecord()">'+
 271                   '<div class="marcrecord">'+
 272                     '<div><eg-marc-edit-leader record="record" on-keydown="onKeydown"/></div>'+
 273                     '<div><eg-marc-edit-controlfield '+
 274                         'ng-repeat="field in controlfields" '+
 275                         'field="field" on-keydown="onKeydown"'+
 276                         'id="r{{field.record.subfield(\'901\',\'c\')[1]}}f{{field.position}}"'+
 277                         '/></div>'+
 278                     '<div><eg-marc-edit-datafield '+
 279                         'ng-repeat="field in datafields" '+
 280                         'field="field" on-keydown="onKeydown" '+
 281                         'id="r{{field.record.subfield(\'901\',\'c\')[1]}}f{{field.position}}"'+
 282                         '/></div>'+
 283                   '</div>'+
 284                   '<button class="btn btn-default" type="submit">Save</button>'+
 285                   '</form>'+
 286                   '<button class="btn btn-default" ng-click="seeBreaker()">Breaker</button>',
 287         restrict: 'E',
 288         replace: false,
 289         scope: { recordId : '=', maxUndo : '@' },
 290         link: function (scope, element, attrs) {
 291
 292             element.bind('click', function(e) {;
 293                 scope.current_event_target = $(e.target).attr('id');
 294                 if (scope.current_event_target) {
 295                     console.log('Recording click event on ' + scope.current_event_target);
 296                     scope.current_event_target_cursor_pos =
 297                         e.target.selectionDirection=='backward' ?
 298                             e.target.selectionStart :
 299                             e.target.selectionEnd;
 300                 }
 301             });
 302
 303         },
 304         controller : ['$timeout','$scope','egCore',
 305             function ( $timeout , $scope , egCore ) {
 306
 307                 $scope.max_undo = $scope.maxUndo || 100;
 308                 $scope.record_undo_stack = [];
 309                 $scope.record_redo_stack = [];
 310                 $scope.in_undo = false;
 311                 $scope.in_redo = false;
 312                 $scope.record = new MARC.Record();
 313                 $scope.save_stack_depth = 0;
 314                 $scope.controlfields = [];
 315                 $scope.datafields = [];
 316
 317                 $scope.onKeydown = function (event) {
 318                     var event_return = true;
 319
 320                     console.log(
 321                         'keydown: which='+event.which+
 322                         ', ctrlKey='+event.ctrlKey+
 323                         ', shiftKey='+event.shiftKey+
 324                         ', altKey='+event.altKey+
 325                         ', metaKey='+event.altKey
 326                     );
 327
 328                     if (event.which == 89 && event.ctrlKey) { // ctrl+y, redo
 329                         event_return = $scope.processRedo();
 330                     } else if (event.which == 90 && event.ctrlKey) { // ctrl+z, undo
 331                         event_return = $scope.processUndo();
 332                     } else if ((event.which == 68 || event.which == 73) && event.ctrlKey) { // ctrl+d or ctrl+i, insert subfield
 333
 334                         var element = $(event.target);
 335                         var new_sf, index_sf, move_data;
 336
 337                         if (element.hasClass('marcsfvalue')) {
 338                             index_sf = event.data.scope.subfield[2];
 339                             new_sf = index_sf + 1;
 340
 341                             var start = event.target.selectionStart;
 342                             var end = event.target.selectionEnd - event.target.selectionStart ?
 343                                     event.target.selectionEnd :
 344                                     event.target.value.length;
 345
 346                             move_data = event.target.value.substring(start,end);
 347
 348                         } else if (element.hasClass('marcsfcode')) {
 349                             index_sf = event.data.scope.subfield[2];
 350                             new_sf = index_sf + 1;
 351                         } else if (element.hasClass('marctag') || element.hasClass('marcind')) {
 352                             index_sf = 0;
 353                             new_sf = index_sf;
 354                         }
 355
 356                         $scope.current_event_target = 'r' + $scope.recordId +
 357                                                       'f' + event.data.scope.field.position +
 358                                                       's' + new_sf + 'code';
 359
 360                         event.data.scope.field.subfields.forEach(function(sf) {
 361                             if (sf[2] >= new_sf) sf[2]++;
 362                             if (sf[2] == index_sf) sf[1] = event.target.value.substring(0,start) + event.target.value.substring(end);
 363                         });
 364                         event.data.scope.field.subfields.splice(
 365                             new_sf,
 366                             0,
 367                             [' ', move_data, new_sf ]
 368                         );
 369
 370                         $scope.current_event_target_cursor_pos = 0;
 371                         $scope.current_event_target_cursor_pos_end = 1;
 372
 373                         $timeout(function(){$scope.$digest()}).then(setCaret);
 374
 375                         event_return = false;
 376
 377                     } else if (event.which == 117 && event.shiftKey) { // shift + F6, insert 006
 378                         event.data.scope.field.record.insertOrderedFields(
 379                             new MARC.Field({
 380                                 tag : '006',
 381                                 data : '                                        '
 382                             })
 383                         );
 384
 385                         $scope.force_render = true;
 386                         $timeout(function(){$scope.$digest()}).then(setCaret);
 387
 388                         event_return = false;
 389
 390                     } else if (event.which == 118 && event.shiftKey) { // shift + F7, insert 007
 391                         event.data.scope.field.record.insertOrderedFields(
 392                             new MARC.Field({
 393                                 tag : '007',
 394                                 data : '                                        '
 395                             })
 396                         );
 397
 398                         $scope.force_render = true;
 399                         $timeout(function(){$scope.$digest()}).then(setCaret);
 400
 401                         event_return = false;
 402
 403                     } else if (event.which == 119 && event.shiftKey) { // shift + F8, insert/replace 008
 404                         var new_008_data = event.data.scope.field.record.generate008();
 405
 406
 407                         var old_008s = event.data.scope.field.record.field('008',true);
 408                         old_008s.forEach(function(o) {
 409                             var domnode = $('#r'+o.record.subfield('901','c')[1] + 'f' + o.position);
 410                             domnode.scope().$destroy();
 411                             domnode.remove();
 412                             event.data.scope.field.record.deleteFields(o);
 413                         });
 414
 415                         event.data.scope.field.record.insertOrderedFields(
 416                             new MARC.Field({
 417                                 tag : '008',
 418                                 data : new_008_data
 419                             })
 420                         );
 421
 422                         $scope.force_render = true;
 423                         $timeout(function(){$scope.$digest()}).then(setCaret);
 424
 425                         event_return = false;
 426
 427                     } else if (event.which == 13 && event.ctrlKey) { // ctrl+enter, insert datafield
 428
 429                         var element = $(event.target);
 430
 431                         var index_field = event.data.scope.field.position;
 432                         var new_field = index_field + 1;
 433
 434                         event.data.scope.field.record.insertFieldsAfter(
 435                             event.data.scope.field,
 436                             new MARC.Field({
 437                                 tag : '999',
 438                                 subfields : [[' ','',0]]
 439                             })
 440                         );
 441
 442                         $scope.current_event_target = 'r' + $scope.recordId +
 443                                                       'f' + new_field + 'tag';
 444
 445                         $scope.current_event_target_cursor_pos = 0;
 446                         $scope.current_event_target_cursor_pos_end = 3;
 447                         $scope.force_render = true;
 448
 449                         $timeout(function(){$scope.$digest()}).then(setCaret);
 450
 451                         event_return = false;
 452
 453                     } else if (event.which == 46 && event.ctrlKey) { // ctrl+del, remove field
 454
 455                         var del_field = event.data.scope.field.position;
 456
 457                         var domnode = $('#r'+event.data.scope.field.record.subfield('901','c')[1] + 'f' + del_field);
 458
 459                         event.data.scope.field.record.deleteFields(
 460                             event.data.scope.field
 461                         );
 462
 463                         domnode.scope().$destroy();
 464                         domnode.remove();
 465
 466                         $scope.current_event_target = 'r' + $scope.recordId +
 467                                                       'f' + del_field + 'tag';
 468
 469                         $scope.current_event_target_cursor_pos = 0;
 470                         $scope.current_event_target_cursor_pos_end = 0
 471                         $scope.force_render = true;
 472
 473                         $timeout(function(){$scope.$digest()}).then(setCaret);
 474
 475                         event_return = false;
 476
 477                     } else if (event.which == 46 && event.shiftKey && $(event.target).hasClass('marcsf')) { // shift+del, remove subfield
 478
 479                         var sf = event.data.scope.subfield[2] - 1;
 480                         if (sf == -1) sf = 0;
 481
 482                         event.data.scope.field.deleteExactSubfields(
 483                             event.data.scope.subfield
 484                         );
 485
 486                         if (!event.data.scope.field.subfields[sf]) {
 487                             $scope.current_event_target = 'r' + $scope.recordId +
 488                                                           'f' + event.data.scope.field.position +
 489                                                           'tag';
 490                         } else {
 491                             $scope.current_event_target = 'r' + $scope.recordId +
 492                                                           'f' + event.data.scope.field.position +
 493                                                           's' + sf + 'value';
 494                         }
 495
 496                         $scope.current_event_target_cursor_pos = 0;
 497                         $scope.current_event_target_cursor_pos_end = 0;
 498                         $scope.force_render = true;
 499
 500                         $timeout(function(){$scope.$digest()}).then(setCaret);
 501
 502                         event_return = false;
 503
 504                     } else if (event.keyCode == 38) {
 505                         if (event.ctrlKey) { // copy the field up
 506                             var index_field = event.data.scope.field.position;
 507
 508                             var field_obj;
 509                             if (event.data.scope.field.isControlfield()) {
 510                                 field_obj = new MARC.Field({
 511                                     tag : event.data.scope.field.tag,
 512                                     data : event.data.scope.field.data
 513                                 });
 514                             } else {
 515                                 var sf_clone = [];
 516                                 for (var i in event.data.scope.field.subfields) {
 517                                     sf_clone.push(event.data.scope.field.subfields[i].slice());
 518                                 }
 519                                 field_obj = new MARC.Field({
 520                                     tag : event.data.scope.field.tag,
 521                                     ind1 : event.data.scope.field.ind1,
 522                                     ind2 : event.data.scope.field.ind2,
 523                                     subfields : sf_clone
 524                                 });
 525                             }
 526
 527
 528                             event.data.scope.field.record.insertFieldsBefore(
 529                                 event.data.scope.field,
 530                                 field_obj
 531                             );
 532
 533                             $scope.current_event_target = 'r' + $scope.recordId +
 534                                                           'f' + index_field + 'tag';
 535
 536                             $scope.current_event_target_cursor_pos = 0;
 537                             $scope.current_event_target_cursor_pos_end = 3;
 538                             $scope.force_render = true;
 539
 540                             $timeout(function(){$scope.$digest()}).then(setCaret);
 541
 542                         } else { // jump to prev field
 543                             if (event.data.scope.field.position > 0) {
 544                                 $timeout(function(){
 545                                     $scope.current_event_target_cursor_pos = 0;
 546                                     $scope.current_event_target_cursor_pos_end = 0;
 547                                     $scope.current_event_target = 'r' + $scope.recordId +
 548                                                                   'f' + (event.data.scope.field.position - 1) +
 549                                                                   'tag';
 550                                 }).then(setCaret);
 551                             }
 552                         }
 553
 554                         event_return = false;
 555
 556                     } else if (event.keyCode == 40) { // down arrow...
 557                         if (event.ctrlKey) { // copy the field down
 558
 559                             var index_field = event.data.scope.field.position;
 560                             var new_field = index_field + 1;
 561
 562                             var field_obj;
 563                             if (event.data.scope.field.isControlfield()) {
 564                                 field_obj = new MARC.Field({
 565                                     tag : event.data.scope.field.tag,
 566                                     data : event.data.scope.field.data
 567                                 });
 568                             } else {
 569                                 var sf_clone = [];
 570                                 for (var i in event.data.scope.field.subfields) {
 571                                     sf_clone.push(event.data.scope.field.subfields[i].slice());
 572                                 }
 573                                 field_obj = new MARC.Field({
 574                                     tag : event.data.scope.field.tag,
 575                                     ind1 : event.data.scope.field.ind1,
 576                                     ind2 : event.data.scope.field.ind2,
 577                                     subfields : sf_clone
 578                                 });
 579                             }
 580
 581                             event.data.scope.field.record.insertFieldsAfter(
 582                                 event.data.scope.field,
 583                                 field_obj
 584                             );
 585
 586                             $scope.current_event_target = 'r' + $scope.recordId +
 587                                                           'f' + new_field + 'tag';
 588
 589                             $scope.current_event_target_cursor_pos = 0;
 590                             $scope.current_event_target_cursor_pos_end = 3;
 591                             $scope.force_render = true;
 592
 593                             $timeout(function(){$scope.$digest()}).then(setCaret);
 594
 595                         } else { // jump to next field
 596                             if (event.data.scope.field.record.fields[event.data.scope.field.position + 1]) {
 597                                 $timeout(function(){
 598                                     $scope.current_event_target_cursor_pos = 0;
 599                                     $scope.current_event_target_cursor_pos_end = 0;
 600                                     $scope.current_event_target = 'r' + $scope.recordId +
 601                                                                   'f' + (event.data.scope.field.position + 1) +
 602                                                                   'tag';
 603                                 }).then(setCaret);
 604                             }
 605                         }
 606
 607                         event_return = false;
 608
 609                     } else { // Assumes only marc editor elements have IDs that can trigger this event handler.
 610                         $scope.current_event_target = $(event.target).attr('id');
 611                         if ($scope.current_event_target) {
 612                             $scope.current_event_target_cursor_pos =
 613                                 event.target.selectionDirection=='backward' ?
 614                                     event.target.selectionStart :
 615                                     event.target.selectionEnd;
 616                         }
 617                     }
 618
 619                     return event_return;
 620                 };
 621
 622                 function setCaret() {
 623                     if ($scope.current_event_target) {
 624                         console.log("Putting caret in " + $scope.current_event_target);
 625                         if (!$scope.current_event_target_cursor_pos_end)
 626                             $scope.current_event_target_cursor_pos_end = $scope.current_event_target_cursor_pos
 627
 628                         var element = $('#'+$scope.current_event_target).get(0);
 629                         if (element) {
 630                             element.focus();
 631                             if (element.setSelectionRange) {
 632                                 element.setSelectionRange(
 633                                     $scope.current_event_target_cursor_pos,
 634                                     $scope.current_event_target_cursor_pos_end
 635                                 );
 636                             }
 637                             $scope.current_event_cursor_pos_end = null;
 638                             $scope.current_event_target = null;
 639                         }
 640                     }
 641                 }
 642
 643                 function loadRecord() {
 644                     return egCore.pcrud.retrieve(
 645                         'bre', $scope.recordId
 646                     ).then(function(rec) {
 647                         $scope.in_redo = true;
 648                         $scope.bre = rec;
 649                         $scope.record = new MARC.Record({ marcxml : $scope.bre.marc() });
 650                         $scope.controlfields = $scope.record.fields.filter(function(f){ return f.isControlfield() });
 651                         $scope.datafields = $scope.record.fields.filter(function(f){ return !f.isControlfield() });
 652                         $scope.save_stack_depth = $scope.record_undo_stack.length;
 653                     }).then(setCaret);
 654                 }
 655
 656                 $scope.$watch('record.toBreaker()', function (newVal, oldVal) {
 657                     if (!$scope.in_undo && !$scope.in_redo && oldVal != newVal) {
 658                         $scope.record_undo_stack.push({
 659                             breaker: oldVal,
 660                             target: $scope.current_event_target,
 661                             pos: $scope.current_event_target_cursor_pos
 662                         });
 663
 664                         if ($scope.force_render) {
 665                             $scope.controlfields = $scope.record.fields.filter(function(f){ return f.isControlfield() });
 666                             $scope.datafields = $scope.record.fields.filter(function(f){ return !f.isControlfield() });
 667                             $scope.force_render = false;
 668                         }
 669
 670                         if ($scope.record_undo_stack.length != $scope.save_stack_depth) {
 671                             console.log('should get a listener... does not');
 672                             $('body').on('beforeunload', function(){
 673                                 return 'There is unsaved data in this record.'
 674                             });
 675                         } else {
 676                             $('body').off('beforeunload');
 677                         }
 678                     }
 679
 680                     if ($scope.record_undo_stack.length > $scope.max_undo)
 681                         $scope.record_undo_stack.shift();
 682
 683                     console.log('undo stack is ' + $scope.record_undo_stack.length + ' deep');
 684                     $scope.in_redo = false;
 685                     $scope.in_undo = false;
 686                 });
 687
 688                 $scope.processUndo = function () {
 689                     if ($scope.record_undo_stack.length) {
 690                         $scope.in_undo = true;
 691
 692                         var undo_item = $scope.record_undo_stack.pop();
 693                         $scope.record_redo_stack.push(undo_item);
 694
 695                         $scope.record = new MARC.Record({ marcbreaker : undo_item.breaker });
 696                         $scope.controlfields = $scope.record.fields.filter(function(f){ return f.isControlfield() });
 697                         $scope.datafields = $scope.record.fields.filter(function(f){ return !f.isControlfield() });
 698
 699                         $scope.current_event_target = undo_item.target;
 700                         $scope.current_event_target_cursor_pos = undo_item.pos;
 701                         console.log('Undo targeting ' + $scope.current_event_target + ' position ' + $scope.current_event_target_cursor_pos);
 702
 703                         $timeout(function(){$scope.$digest()}).then(setCaret);
 704                         return false;
 705                     }
 706
 707                     return true;
 708                 };
 709
 710                 $scope.processRedo = function () {
 711                     if ($scope.record_redo_stack.length) {
 712                         $scope.in_redo = true;
 713
 714                         var redo_item = $scope.record_redo_stack.pop();
 715                         $scope.record_undo_stack.push(redo_item);
 716
 717                         $scope.record = new MARC.Record({ marcbreaker : redo_item.breaker });
 718                         $scope.controlfields = $scope.record.fields.filter(function(f){ return f.isControlfield() });
 719                         $scope.datafields = $scope.record.fields.filter(function(f){ return !f.isControlfield() });
 720
 721                         $scope.current_event_target = redo_item.target;
 722                         $scope.current_event_target_cursor_pos = redo_item.pos;
 723                         console.log('Redo targeting ' + $scope.current_event_target + ' position ' + $scope.current_event_target_cursor_pos);
 724
 725                         $timeout(function(){$scope.$digest()}).then(setCaret);
 726                         return false;
 727                     }
 728
 729                     return true;
 730                 };
 731
 732                 $scope.saveRecord = function () {
 733                     $scope.bre.marc($scope.record.toXmlString());
 734                     return egCore.pcrud.update(
 735                         $scope.bre
 736                     ).then(loadRecord);
 737                 };
 738
 739                 $scope.seeBreaker = function () {
 740                     alert($scope.record.toBreaker());
 741                 };
 742
 743                 $scope.$watch('recordId',
 744                     function(newVal, oldVal) {
 745                         if (newVal && newVal !== oldVal) {
 746                             loadRecord();
 747                         }
 748                     }
 749                 );
 750
 751                 if ($scope.recordId)
 752                     loadRecord();
 753
 754             }
 755         ]
 756     }
 757 })
 758
 759 ;