src/editor/plugins/core/core.js

   1 define(function(require) {
   2
   3 'use strict';
   4 /* globals gettext */
   5
   6 var _ = require('libs/underscore'),
   7     templates = require('plugins/core/templates'),
   8     footnote = require('plugins/core/footnote'),
   9     switchTo = require('plugins/core/switch'),
  10     lists = require('plugins/core/lists'),
  11     plugin = {name: 'core', actions: [], canvas: {}, documentExtension: {textNode: {}, documentNode: {}}},
  12     Dialog = require('views/dialog/dialog'),
  13     canvasElements = require('plugins/core/canvasElements'),
  14     metadataEditor = require('plugins/core/metadataEditor/metadataEditor'),
  15     edumed = require('plugins/core/edumed/edumed');
  16
  17
  18 plugin.documentExtension.textNode.transformations = {
  19     breakContent: {
  20         impl: function(args) {
  21             var node = this,
  22                 isSpan = node.parent().getTagName() === 'span',
  23                 parentDescribingNodes = [],
  24                 newNodes, emptyText;
  25             newNodes = node.split({offset: args.offset});
  26             newNodes.second.contents()
  27                 .filter(function(child) {
  28                     return child.object.describesParent;
  29                 })
  30                 .forEach(function(child) {
  31                     //child.detach();
  32                     parentDescribingNodes.push(child);
  33                     child.detach();
  34                 });
  35             [newNodes.first, newNodes.second].some(function(newNode) {
  36                 if(!(newNode.contents().length)) {
  37                     emptyText = newNode.append({text: ''});
  38                     return true; // break
  39                 }
  40             });
  41             parentDescribingNodes.forEach(function(node) {
  42                 newNodes.first.append(node);
  43             });
  44
  45             var parent, newNode;
  46
  47             var copyNode = function(n) {
  48                 var attrs = {};
  49                 n.getAttrs().forEach(function(attr) {
  50                     attrs[attr.name] = attr.value;
  51                 });
  52
  53                 return node.document.createDocumentNode({
  54                     tagName: n.getTagName(),
  55                     attrs: attrs
  56                 });
  57             };
  58
  59             var move = function(node, to) {
  60                 var copy;
  61                 if(!node.containsNode(newNodes.second)) {
  62                     to.append(node);
  63                     return false;
  64                 } else {
  65                     if(!node.sameNode(newNodes.second)) {
  66                         copy = to.append(copyNode(node));
  67                         node.contents().some(function(n) {
  68                             return move(n, copy);
  69                         });
  70                     }
  71                     return true;
  72                 }
  73             };
  74
  75             if(isSpan) {
  76                 newNodes.first.parents().some(function(p) {
  77                     if(p.getTagName() !== 'span') {
  78                         parent = p;
  79                         return true;
  80                     }
  81                 });
  82                 newNode = parent.before({tagName: parent.getTagName(), attrs: {'class': parent.getClass()}});
  83                 parent.contents().some(function(n) {
  84                     return move(n, newNode);
  85                 });
  86             }
  87
  88             return _.extend(newNodes, {emptyText: emptyText});
  89         }
  90     },
  91     mergeContentUp: function() {
  92         /* globals Node */
  93         var myPrev = this,
  94             base = this,
  95             ret;
  96
  97         if(myPrev.nodeType === Node.TEXT_NODE) {
  98             if(myPrev.getIndex() > 0) {
  99                 return;
 100             }
 101             myPrev = base = myPrev.parent();
 102         }
 103
 104         myPrev = myPrev && myPrev.prev();
 105
 106         if(myPrev && myPrev.nodeType === Node.ELEMENT_NODE)  {
 107             var ptr = this,
 108                 next;
 109             while(ptr) {
 110                 next = ptr.next();
 111                 if(!ret) {
 112                     ret = myPrev.append(ptr);
 113                 } else {
 114                     myPrev.append(ptr);
 115                 }
 116
 117                 ptr = next;
 118             }
 119             if(base !== this) {
 120                 base.detach();
 121             }
 122             return {node: ret, offset: ret.sameNode(this) ? null : ret.getText().length - this.getText().length};
 123         }
 124     }
 125 };
 126
 127 plugin.documentExtension.documentNode.transformations = {
 128     moveUp: function() {
 129         var toMerge = this,
 130             prev = toMerge.prev();
 131
 132         var merge = function(from, to) {
 133             var toret;
 134             from.contents().forEach(function(node, idx) {
 135                 var len, ret;
 136                 if(idx === 0 && node.nodeType === Node.TEXT_NODE) {
 137                     len = node.getText().length;
 138                 }
 139                 ret = to.append(node);
 140
 141                 if(idx === 0 && ret.nodeType === Node.TEXT_NODE) {
 142                     toret = {
 143                         node: ret,
 144                         offset: ret.getText().length - len
 145                     };
 146                 } else if(!toret) {
 147                     toret = {
 148                         node: ret.getFirstTextNode(),
 149                         offset: 0
 150                     };
 151                 }
 152             });
 153             from.detach();
 154             return toret;
 155         };
 156
 157         var strategies = [
 158             {
 159                 applies: function() {
 160                     return toMerge.nodeType === Node.TEXT_NODE && prev.is({tagName: 'span'});
 161                 },
 162                 run: function() {
 163                     var textNode = prev.getLastTextNode(),
 164                         txt, prevText, prevTextLen;
 165                     if(textNode) {
 166                         txt = textNode.getText();
 167                         if(txt.length > 1) {
 168                             textNode.setText(txt.substr(0, txt.length-1));
 169                             return {node: toMerge, offset: 0};
 170                         } else {
 171                             if((prevText = prev.prev()) && prevText.nodeType === Node.TEXT_NODE) {
 172                                 prevTextLen = prevText.getText().length;
 173                             }
 174                             prev.detach();
 175                             return {
 176                                 node: prevText ? prevText : toMerge,
 177                                 offset : prevText ? prevTextLen : 0
 178                             };
 179                         }
 180                     }
 181                 }
 182             },
 183             {
 184                 applies: function() {
 185                     return toMerge.is({tagName: 'div', 'klass': 'p'}) || (toMerge.is({tagName: 'div'}) && toMerge.getClass() === '');
 186                 },
 187                 run: function() {
 188                     if(prev && prev.is('p') || prev.is({tagName: 'header'})) {
 189                         return merge(toMerge, prev);
 190                     }
 191                     if(prev && prev.is('list')) {
 192                         var items = prev.contents().filter(function(n) { return n.is('item');});
 193                         return merge(toMerge, items[items.length-1]);
 194                     }
 195                 }
 196             },
 197             {
 198                 applies: function() {
 199                     return toMerge.is({tagName: 'span'});
 200                 },
 201                 run: function() {
 202                     /* globals Node */
 203                     var toret = {node: toMerge.contents()[0] , offset: 0},
 204                         txt, txtNode, parent;
 205                     if(!prev) {
 206                         toMerge.parents().some(function(p) {
 207                             if(p.is({tagName: 'span'})) {
 208                                 parent = prev = p;
 209                             } else {
 210                                 if(!parent) {
 211                                     parent = p;
 212                                 }
 213                                 prev = prev && prev.prev();
 214                                 return true;
 215                             }
 216                         });
 217                     }
 218                     if(!prev) {
 219                         return parent.moveUp();
 220                     }
 221                     else if(prev.nodeType === Node.TEXT_NODE && (txt = prev.getText())) {
 222                         prev.setText(txt.substr(0, txt.length-1));
 223                         return toret;
 224                     } else if(prev.is({tagName: 'span'})) {
 225                         if((txtNode = prev.getLastTextNode())) {
 226                             txt = txtNode.getText();
 227                             txtNode.setText(txt.substr(0, txt.length-1));
 228                             return toret;
 229                         }
 230                     }
 231
 232                 }
 233             },
 234             {
 235                 applies: function() {
 236                     return toMerge.is({tagName: 'header'});
 237                 },
 238                 run: function() {
 239                     if(prev && prev.is('p') || prev.is({tagName: 'header'})) {
 240                         return merge(toMerge, prev);
 241                     }
 242                 }
 243             },
 244             {
 245                 applies: function() {
 246                     return toMerge.is('item');
 247                 },
 248                 run: function() {
 249                     var list;
 250                     if(prev && prev.is('item')) {
 251                         return merge(toMerge, prev);
 252                     } else if(!prev && (list = toMerge.parent()) && list.is('list')) {
 253                         list.before(toMerge);
 254                         toMerge.setClass('p');
 255                         if(!list.contents().length) {
 256                             list.detach();
 257                         }
 258                         return {node: toMerge.contents()[0], offset:0};
 259                     }
 260                 }
 261             }
 262         ];
 263
 264         var toret;
 265         strategies.some(function(strategy) {
 266             if(strategy.applies()) {
 267                 toret = strategy.run();
 268                 return true;
 269             }
 270         });
 271         return toret;
 272     }
 273 };
 274
 275 var undoRedoAction = function(dir) {
 276     return {
 277         name: dir,
 278         params: {
 279             document: {type: 'context', name: 'document'},
 280         },
 281         stateDefaults: {
 282             label: dir === 'undo' ? '<-' : '->',
 283             icon: 'share-alt',
 284             iconStyle: dir === 'undo' ? '-webkit-transform: scale(-1,1); transform: scale(-1, 1)' : '',
 285             execute: function(callback, params) {
 286                 var metadata = _.last(params.document[dir+'Stack']).metadata,
 287                     fragment = metadata && metadata.fragment;
 288                 params.document[dir]();
 289                 if(fragment) {
 290                     if(!fragment.isValid()) {
 291                         fragment.restoreFromPaths();
 292                     }
 293                     if(fragment.isValid()) {
 294                         callback(fragment);
 295                     }
 296                 }
 297                 callback();
 298             },
 299         },
 300         getState: function(params) {
 301             var allowed = params.document && !!(params.document[dir+'Stack'].length),
 302                 desc = dir === 'undo' ? gettext('Undo') : gettext('Redo'),
 303                 descEmpty = dir === 'undo' ? gettext('There is nothing to undo') : gettext('There is nothing to redo');
 304             if(allowed) {
 305                 var metadata = _.last(params.document[dir+'Stack']).metadata;
 306                 if(metadata) {
 307                     desc += ': ' + (metadata.description || gettext('unknown operation'));
 308                 }
 309             }
 310             return {
 311                 allowed: allowed,
 312                 description: allowed ? desc : descEmpty
 313             };
 314         }
 315     };
 316 };
 317
 318 var pad = function(number) {
 319     if(number < 10) {
 320         number = '0' + number;
 321     }
 322     return number;
 323 };
 324
 325 var commentAction = {
 326     name: 'comment',
 327     params: {
 328         fragment: {type: 'context', name: 'fragment'}
 329     },
 330     stateDefaults: {
 331         icon: 'comment',
 332         execute: function(callback, params, editor) {
 333             /* globals Node */
 334             var node = params.fragment.node,
 335                 action = this;
 336             if(node.nodeType === Node.TEXT_NODE) {
 337                 node = node.parent();
 338             }
 339             node.document.transaction(function() {
 340                 var comment =  node.after({tagName: 'aside', attrs: {'class': 'comment'}});
 341                 comment.append({text:''});
 342                 var user = editor.getUser(), creator;
 343                 if(user) {
 344                     creator = user.name;
 345                     if(user.email) {
 346                         creator += ' (' + user.email + ')';
 347                     }
 348                 } else {
 349                     creator = 'anonymous';
 350                 }
 351
 352                 var currentDate = new Date(),
 353                     dt = pad(currentDate.getDate()) + '-' +
 354                                 pad((currentDate.getMonth() + 1))  + '-' +
 355                                 pad(currentDate.getFullYear()) + ' ' +
 356                                 pad(currentDate.getHours()) + ':' +
 357                                 pad(currentDate.getMinutes()) + ':' +
 358                                 pad(currentDate.getSeconds());
 359
 360                 var metadata = comment.getMetadata();
 361                 metadata.add({key: 'creator', value: creator});
 362                 metadata.add({key: 'date', value: dt});
 363             }, {
 364                 metadata: {
 365                     description: action.getState().description
 366                 },
 367                 success: callback
 368             });
 369         },
 370     },
 371     getState: function(params) {
 372         var state = {
 373             allowed: params.fragment && params.fragment.isValid() &&
 374                         params.fragment instanceof params.fragment.NodeFragment && !params.fragment.node.isRoot()
 375         };
 376         if(state.allowed) {
 377             state.description = gettext('Insert comment');
 378         }
 379         return state;
 380     }
 381 };
 382
 383
 384 var createWrapTextAction = function(createParams) {
 385     return {
 386         name: createParams.name,
 387         params: {
 388             fragment: {type: 'context', name: 'fragment'},
 389         },
 390         getState: function(params) {
 391             var state = {
 392                     label: this.config.label
 393                 },
 394                 parent;
 395
 396             if(!params.fragment || !params.fragment.isValid()) {
 397                 return _.extend(state, {allowed: false});
 398             }
 399
 400             if(params.fragment instanceof params.fragment.CaretFragment && params.fragment.node.isInside(createParams.klass)) {
 401                 return _.extend(state, {
 402                     allowed: true,
 403                     toggled: true,
 404                     description: createParams.unwrapDescription,
 405                     execute: function(callback, params) {
 406                         var node = params.fragment.node,
 407                             doc = node.document,
 408                             toRemove = node.getParent(createParams.klass),
 409                             prefLen = 0;
 410
 411                         if(node.sameNode(toRemove.contents()[0]) && toRemove.isPrecededByTextNode()) {
 412                             prefLen = toRemove.prev().getText().length;
 413                         }
 414
 415                         doc.transaction(function() {
 416                             var ret = toRemove.unwrapContent(),
 417                                 newFragment = params.fragment;
 418                             if(!newFragment.isValid()) {
 419                                 newFragment =  doc.createFragment(doc.CaretFragment, {
 420                                     node: ret.element1,
 421                                     offset: prefLen + params.fragment.offset
 422                                 });
 423                             }
 424                             return newFragment;
 425                         }, {
 426                             metadata: {
 427                                 description: createParams.unwrapDescription,
 428                                 fragment: params.fragment
 429                             },
 430                             success: callback
 431                         });
 432                     }
 433                 });
 434             }
 435
 436             if(params.fragment instanceof params.fragment.TextRangeFragment && params.fragment.hasSiblingBoundries()) {
 437                 parent = params.fragment.startNode.parent();
 438                 if(parent && parent.is(createParams.klass) || parent.isInside(createParams.klass)) {
 439                     return _.extend(state, {allowed: false});
 440                 }
 441
 442                 return _.extend(state, {
 443                     allowed: true,
 444                     description: createParams.wrapDescription,
 445                     execute: function(callback, params) {
 446                         params.fragment.document.transaction(function() {
 447                             var parent = params.fragment.startNode.parent(),
 448                                 doc = params.fragment.document,
 449                                 wrapper, lastTextNode;
 450
 451                             wrapper = parent.wrapText({
 452                                 _with: {tagName: 'span', attrs: {'class': createParams.klass}},
 453                                 offsetStart: params.fragment.startOffset,
 454                                 offsetEnd: params.fragment.endOffset,
 455                                 textNodeIdx: [params.fragment.startNode.getIndex(), params.fragment.endNode.getIndex()]
 456                             });
 457
 458                             lastTextNode = wrapper.getLastTextNode();
 459                             if(lastTextNode) {
 460                                 return doc.createFragment(doc.CaretFragment, {node: lastTextNode, offset: lastTextNode.getText().length});
 461                             }
 462                         }, {
 463                             metadata: {
 464                                 description: createParams.wrapDescription,
 465                                 fragment: params.fragment
 466                             },
 467                             success: callback
 468                         });
 469                     }
 470                 });
 471             }
 472             return _.extend(state, {allowed: false});
 473         }
 474     };
 475 };
 476
 477
 478 var createLinkFromSelection = function(callback, params) {
 479     var doc = params.fragment.document,
 480         dialog = Dialog.create({
 481             title: gettext('Create link'),
 482             executeButtonText: gettext('Apply'),
 483             cancelButtonText: gettext('Cancel'),
 484             fields: [
 485                 {label: gettext('Link'), name: 'href', type: 'input',
 486                 prePasteHandler: function(text) {
 487                                     return params.fragment.document.getLinkForUrl(text);
 488                                 }.bind(this)
 489                 }
 490             ]
 491         }),
 492         action = this;
 493
 494     dialog.on('execute', function(event) {
 495         doc.transaction(function() {
 496             var span =  action.params.fragment.startNode.parent().wrapText({
 497                 _with: {tagName: 'span', attrs: {'class': 'link', href: event.formData.href }},
 498                 offsetStart: params.fragment.startOffset,
 499                 offsetEnd: params.fragment.endOffset,
 500                 textNodeIdx: [params.fragment.startNode.getIndex(), params.fragment.endNode.getIndex()]
 501             }),
 502                 doc = params.fragment.document;
 503             event.success();
 504             return doc.createFragment(doc.CaretFragment, {node: span.contents()[0], offset:0});
 505         }, {
 506             metadata: {
 507                 description: action.getState().description,
 508                 fragment: params.fragment
 509             },
 510             success: callback
 511         });
 512     });
 513     dialog.show();
 514 };
 515
 516 var editLink = function(callback, params) {
 517     var doc = params.fragment.document,
 518         link = params.fragment.node.getParent('link'),
 519         dialog = Dialog.create({
 520             title: gettext('Edit link'),
 521             executeButtonText: gettext('Apply'),
 522             cancelButtonText: gettext('Cancel'),
 523             fields: [
 524                 {label: gettext('Link'), name: 'href', type: 'input', initialValue: link.getAttr('href')}
 525             ]
 526         }),
 527         action = this;
 528
 529     dialog.on('execute', function(event) {
 530         doc.transaction(function() {
 531             link.setAttr('href', event.formData.href);
 532             event.success();
 533             return params.fragment;
 534         }, {
 535             metadata: {
 536                 description: action.getState().description,
 537                 fragment: params.fragment
 538             },
 539             success: callback
 540         });
 541     });
 542     dialog.show();
 543 };
 544
 545 var linkAction = {
 546     name: 'link',
 547     params: {
 548         fragment: {type: 'context', name: 'fragment'}
 549     },
 550     stateDefaults: {
 551         label: gettext('link')
 552     },
 553     getState: function(params) {
 554         if(!params.fragment || !params.fragment.isValid()) {
 555             return {allowed: false};
 556         }
 557
 558         if(params.fragment instanceof params.fragment.TextRangeFragment) {
 559             if(!params.fragment.hasSiblingBoundries() || params.fragment.startNode.parent().is('link')) {
 560                 return {allowed: false};
 561             }
 562             return {
 563                 allowed: true,
 564                 description: gettext('Create link from selection'),
 565                 execute: createLinkFromSelection
 566             };
 567         }
 568
 569         if(params.fragment instanceof params.fragment.CaretFragment) {
 570             if(params.fragment.node.isInside('link')) {
 571                 return {
 572                     allowed: true,
 573                     toggled: true,
 574                     description: gettext('Edit link'),
 575                     execute: editLink
 576                 };
 577             }
 578         }
 579         return {allowed: false};
 580     }
 581 };
 582
 583 var metadataParams = {};
 584
 585 plugin.actions = [
 586     undoRedoAction('undo'),
 587     undoRedoAction('redo'),
 588     commentAction,
 589     createWrapTextAction({name: 'emphasis', klass: 'emp', wrapDescription: gettext('Mark as emphasized'), unwrapDescription: gettext('Remove emphasis')}),
 590     createWrapTextAction({name: 'cite', klass: 'cite', wrapDescription: gettext('Mark as citation'), unwrapDescription: gettext('Remove citation')}),
 591     linkAction,
 592     metadataEditor.action(metadataParams)
 593 ].concat(plugin.actions, templates.actions, footnote.actions, switchTo.actions, lists.actions, edumed.actions);
 594
 595
 596 plugin.config = function(config) {
 597     // templates.actions[0].config(config.templates);
 598     templates.actions[0].params.template.options = config.templates;
 599     metadataParams.config = (config.metadata || []).sort(function(configRow1, configRow2) {
 600         if(configRow1.key < configRow2.key) {
 601             return -1;
 602         }
 603         if(configRow1.key > configRow2.key) {
 604             return 1;
 605         }
 606         return 0;
 607     });
 608 };
 609
 610 plugin.canvasElements = canvasElements.concat(edumed.canvasElements);
 611
 612 return plugin;
 613
 614 });