src/editor/plugins/core/core.test.js

   1 define(function(require) {
   2
   3 'use strict';
   4
   5 /* globals describe, it, afterEach */
   6
   7 var $ = require('libs/jquery'),
   8     _ = require('libs/underscore'),
   9     chai = require('libs/chai'),
  10     sinon = require('libs/sinon'),
  11     wlxml = require('wlxml/wlxml'),
  12     canvas = require('modules/documentCanvas/canvas/canvas'),
  13     keyboard = require('modules/documentCanvas/canvas/keyboard'),
  14     keyEvent = require('modules/documentCanvas/canvas/keyEvent'),
  15     corePlugin = require('./core.js'),
  16     expect = chai.expect;
  17
  18 var K = keyboard.KEYS;
  19
  20 var getDocumentFromXML = function(xml, options) {
  21     var doc = wlxml.WLXMLDocumentFromXML(xml, options || {});
  22     doc.registerExtension(corePlugin.documentExtension);
  23     return doc;
  24 };
  25
  26
  27 var getCanvasFromXML = function(xml, elements) {
  28     var c = canvas.fromXMLDocument(getDocumentFromXML(xml), elements),
  29         view = c.view();
  30     view.attr('canvas-test', true);
  31     /* globals document */
  32     $(document.body).append(view);
  33     return c;
  34 };
  35 var removeCanvas = function() {
  36     $('[canvas-test]').remove();
  37 };
  38
  39 var getTextNodes = function(text, doc) {
  40     /* globals Node */
  41     var toret = [];
  42     var search = function(node) {
  43         node.contents().forEach(function(node) {
  44             if(node.nodeType === Node.TEXT_NODE) {
  45                 if(node.getText() === text) {
  46                     toret.push(node);
  47                 }
  48             } else {
  49                 search(node);
  50             }
  51         });
  52     };
  53     search(doc.root);
  54     return toret;
  55 };
  56
  57 var getTextNode = function(text, doc) {
  58     var nodes = getTextNodes(text, doc),
  59         error;
  60     if(nodes.length === 0) {
  61         error = 'Text not found';
  62     } else if(nodes.length > 1) {
  63         error = 'Text not unique';
  64     } else if(nodes[0].getText() !== text) {
  65         error = 'I was trying to cheat your test :(';
  66     }
  67     if(error) {
  68         throw new Error(error);
  69     }
  70     return nodes[0];
  71 };
  72
  73 var getTextElement = function(text, c) {
  74     var node = getTextNode(text, c.wlxmlDocument),
  75         element =  node && node.getData('canvasElement');
  76     if(!(element && element.getText() === text)) {
  77         throw new Error();
  78     }
  79     return element;
  80 };
  81
  82
  83 describe('Document extensions', function() {
  84     describe('break content', function() {
  85         it('break text into two nodes', function() {
  86             var doc = getDocumentFromXML('<section><div>Alice</div></section>'),
  87                 textNode = doc.root.contents()[0].contents()[0];
  88
  89             var result = textNode.breakContent({offset:3});
  90
  91             var section = doc.root;
  92             expect(section.contents().length).to.equal(2);
  93             expect(section.contents()[0].contents()[0].getText()).to.equal('Ali');
  94             expect(section.contents()[1].contents()[0].getText()).to.equal('ce');
  95
  96             expect(result.first.sameNode(section.contents()[0])).to.equal(true);
  97             expect(result.second.sameNode(section.contents()[1])).to.equal(true);
  98             expect(result.emptyText).to.equal(undefined, 'no new text node created');
  99         });
 100         it('puts empty text node when breaking at the very beginning', function() {
 101             var doc = getDocumentFromXML('<section><div>Alice</div></section>'),
 102                 textNode = doc.root.contents()[0].contents()[0];
 103
 104             var result = textNode.breakContent({offset:0}),
 105                 firstNode = doc.root.contents()[0];
 106
 107             expect(result.emptyText.sameNode(firstNode.contents()[0]));
 108             expect(result.emptyText.getText()).to.equal('');
 109         });
 110         it('puts empty text node when breaking at the very end', function() {
 111             var doc = getDocumentFromXML('<section><div>Alice</div></section>'),
 112             textNode = doc.root.contents()[0].contents()[0];
 113
 114             var result = textNode.breakContent({offset:5}),
 115                 secondNode = doc.root.contents()[1];
 116
 117             expect(result.emptyText.sameNode(secondNode.contents()[0]));
 118             expect(result.emptyText.getText()).to.equal('');
 119         });
 120     });
 121
 122     describe('mergin text with preceding content', function() {
 123         it('does nothing if text node parent has no preceding element', function() {
 124             var doc = getDocumentFromXML('<section><div><div>some text</div></div></section>'),
 125                 text = getTextNode('some text', doc),
 126                 spy = sinon.spy();
 127
 128             doc.on('change', spy);
 129             text.mergeContentUp();
 130             expect(spy.callCount).to.equal(0);
 131         });
 132         it('does nothing if text node parent is precedeed by text node', function() {
 133             var doc = getDocumentFromXML('<section><div></div>another text<div>some text</div></section>'),
 134                 text = getTextNode('some text', doc),
 135                 spy = sinon.spy();
 136
 137             doc.on('change', spy);
 138             text.mergeContentUp();
 139             expect(spy.callCount).to.equal(0);
 140         });
 141         it('does nothing if text node is not first child of its parent', function() {
 142             var doc = getDocumentFromXML('<section><div></div><div><a></a>some text</div></section>'),
 143                 text = getTextNode('some text', doc),
 144                 spy = sinon.spy();
 145
 146             doc.on('change', spy);
 147             text.mergeContentUp();
 148             expect(spy.callCount).to.equal(0);
 149         });
 150         it('moves text node and its siblings to the block element preceding text node parent', function() {
 151             var doc = getDocumentFromXML('<section><div></div><div>some text<span>is</span> here!</div></section>'),
 152                 text = getTextNode('some text', doc);
 153
 154             text.mergeContentUp();
 155
 156             var contents = doc.root.contents();
 157             expect(contents.length).to.equal(1);
 158             expect(contents[0].contents().length).to.equal(3);
 159             expect(contents[0].contents()[0].getText()).to.equal('some text');
 160             expect(contents[0].contents()[1].getTagName()).to.equal('span');
 161             expect(contents[0].contents()[2].getText()).to.equal(' here!');
 162         });
 163     });
 164 });
 165
 166 describe('Keyboard interactions', function() {
 167
 168     var Keyboard = function(canvas) {
 169         this.canvas = canvas;
 170     };
 171
 172     _.extend(Keyboard.prototype, {
 173         press: function(key) {
 174             this.canvas.triggerKeyEvent(keyEvent.fromParams({key:key}), this.selection);
 175             this.selection = this.canvas.getSelection();
 176             return this;
 177         },
 178         withCaret: function(where) {
 179             var offset = where.indexOf('|'),
 180                 text = where.split('|').join(''),
 181                 el = getTextElement(text, this.canvas),
 182                 selection = this.canvas.createSelection({type: 'caret', element: el, offset: offset});
 183             if(offset === -1) {
 184                 throw new Error('Invalid caret');
 185             }
 186             this.selection = selection;
 187             return this;
 188         },
 189         withSelection: function(start, end) {
 190             var startOffset = start.indexOf('|'),
 191                 endOffset = end.indexOf('|'),
 192                 startText= start.split('|').join(''),
 193                 endText = end.split('|').join(''),
 194                 startElement = getTextElement(startText, this.canvas),
 195                 endElement = getTextElement(endText, this.canvas),
 196                 selection = this.canvas.createSelection({
 197                     type: 'textSelection',
 198                     anchorElement: startElement,
 199                     anchorOffset: startOffset,
 200                     focusElement: endElement,
 201                     focusOffset: endOffset
 202                 });
 203             if(startOffset === -1 || endOffset === -1) {
 204                 throw new Error('Invalid text selection');
 205             }
 206             this.selection = selection;
 207             return this;
 208         }
 209     });
 210
 211     describe('deleting text with selection', function() {
 212         afterEach(removeCanvas);
 213
 214         [K.BACKSPACE, K.DELETE].forEach(function(key) {
 215             it('deletes text withing a single text element ' + key, function() {
 216                 var c = getCanvasFromXML('<section><div>Alice</div></section>'),
 217                     k = new Keyboard(c);
 218
 219                 k.withSelection('A|lice', 'Alic|e').press(key);
 220                 expect(c.wlxmlDocument.root.contents()[0].contents()[0].getText()).to.equal('Ae');
 221
 222
 223                 var selection = c.getSelection();
 224                 expect(selection.type).to.equal('caret');
 225                 expect(selection.element.getText()).to.equal('Ae');
 226                 expect(selection.offset).to.equal(1);
 227             });
 228             it('deletes text across two paragraphs ' + key, function() {
 229                 var c = getCanvasFromXML('<section><div class="p">Alice</div><div class="p">cat</div></section>'),
 230                     k = new Keyboard(c);
 231
 232                 k.withSelection('A|lice', 'c|at').press(key);
 233                 var rootContents = c.wlxmlDocument.root.contents();
 234
 235                 expect(rootContents.length).to.equal(2);
 236                 expect(rootContents[0].contents()[0].getText()).to.equal('A');
 237                 expect(rootContents[1].contents()[0].getText()).to.equal('at');
 238
 239                 var selection = c.getSelection();
 240                 expect(selection.type).to.equal('caret');
 241                 expect(selection.element.wlxmlNode.getText()).to.equal(key === K.BACKSPACE ? 'A' : 'at');
 242             });
 243
 244             it('keeps an empty paragraph after deleting its whole text ' + key, function() {
 245                 var c = getCanvasFromXML('<section><div class="p">Alice</div></section>'),
 246                     k = new Keyboard(c);
 247
 248                 k.withSelection('|Alice', 'Alice|').press(key);
 249                 var rootContents = c.wlxmlDocument.root.contents();
 250
 251                 expect(rootContents.length).to.equal(1);
 252                 expect(rootContents[0].contents()[0].getText()).to.equal('');
 253
 254                 var selection = c.getSelection();
 255                 expect(selection.type).to.equal('caret');
 256                 expect(selection.element.wlxmlNode.parent().sameNode(c.wlxmlDocument.root.contents()[0]));
 257             });
 258         });
 259
 260     });
 261
 262
 263     describe('backspace at the beginning', function() {
 264         afterEach(removeCanvas);
 265
 266         it('merges two adjacent paragraphs', function() {
 267             var c = getCanvasFromXML('<section><div class="p">A</div><div class="p">B</div></section>'),
 268                 k = new Keyboard(c);
 269
 270             k.withCaret('|B').press(K.BACKSPACE);
 271
 272             var rootContents = c.wlxmlDocument.root.contents();
 273             expect(rootContents.length).to.equal(1);
 274             expect(rootContents[0].getClass()).to.equal('p');
 275             expect(rootContents[0].contents()[0].getText()).to.equal('AB');
 276
 277             var selection = c.getSelection();
 278             expect(selection.type).to.equal('caret');
 279             expect(selection.element.sameNode(getTextElement('AB', c))).to.equal(true);
 280             expect(selection.offset).to.equal(1);
 281         });
 282         it('merges a paragraph with a header', function() {
 283             var c = getCanvasFromXML('<section><header>A</header><div class="p">B</div></section>'),
 284                 k = new Keyboard(c);
 285
 286             k.withCaret('|B').press(K.BACKSPACE);
 287
 288             var rootContents = c.wlxmlDocument.root.contents();
 289             expect(rootContents.length).to.equal(1);
 290             expect(rootContents[0].getTagName()).to.equal('header');
 291             expect(rootContents[0].contents()[0].getText()).to.equal('AB');
 292
 293             var selection = c.getSelection();
 294             expect(selection.type).to.equal('caret');
 295             expect(selection.element.sameNode(getTextElement('AB', c))).to.equal(true);
 296             expect(selection.offset).to.equal(1);
 297         });
 298         it('merges two adjacent headers', function() {
 299             var c = getCanvasFromXML('<section><header>A</header><header>B</header></section>'),
 300                 k = new Keyboard(c);
 301
 302             k.withCaret('|B').press(K.BACKSPACE);
 303             var rootContents = c.wlxmlDocument.root.contents();
 304             expect(rootContents.length).to.equal(1);
 305             expect(rootContents[0].getTagName()).to.equal('header');
 306             expect(rootContents[0].contents()[0].getText()).to.equal('AB');
 307
 308             var selection = c.getSelection();
 309             expect(selection.type).to.equal('caret');
 310             expect(selection.element.sameNode(getTextElement('AB', c))).to.equal(true);
 311             expect(selection.offset).to.equal(1);
 312         });
 313         it('merges a header with a paragraph', function() {
 314             var c = getCanvasFromXML('<section><div class="p">A</div><header>B</header></section>'),
 315                 k = new Keyboard(c);
 316
 317             k.withCaret('|B').press(K.BACKSPACE);
 318
 319             var rootContents = c.wlxmlDocument.root.contents();
 320             expect(rootContents.length).to.equal(1);
 321             expect(rootContents[0].is('p')).to.equal(true);
 322             expect(rootContents[0].contents()[0].getText()).to.equal('AB');
 323
 324             var selection = c.getSelection();
 325             expect(selection.type).to.equal('caret');
 326             expect(selection.element.sameNode(getTextElement('AB', c))).to.equal(true);
 327             expect(selection.offset).to.equal(1);
 328         });
 329         it('merges a paragraph into a last list item', function() {
 330             var c = getCanvasFromXML('<section><div class="list"><div class="item">item</div></div><div class="p">paragraph</div></section>'),
 331                 list = c.wlxmlDocument.root.contents()[0],
 332                 k = new Keyboard(c);
 333
 334             k.withCaret('|paragraph').press(K.BACKSPACE);
 335
 336             var rootContents = c.wlxmlDocument.root.contents();
 337             expect(rootContents.length).to.equal(1);
 338             expect(rootContents[0].sameNode(list)).to.equal(true);
 339
 340             var items = list.contents();
 341             expect(items.length).to.equal(1);
 342             expect(items[0].contents()[0].getText()).to.equal('itemparagraph');
 343
 344             var selection = c.getSelection();
 345             expect(selection.type).to.equal('caret');
 346             expect(selection.element.sameNode(getTextElement('itemparagraph', c))).to.equal(true);
 347             expect(selection.offset).to.equal(4);
 348         });
 349         it('merges a list item with a list item', function() {
 350             var c = getCanvasFromXML('<section><div class="list"><div class="item">item1</div><div class="item">item2</div></div></section>'),
 351                 list = c.wlxmlDocument.root.contents()[0],
 352                 k = new Keyboard(c);
 353
 354             k.withCaret('|item2').press(K.BACKSPACE);
 355
 356             var rootContents = c.wlxmlDocument.root.contents();
 357             expect(rootContents.length).to.equal(1);
 358
 359             expect(rootContents[0].sameNode(list)).to.equal(true);
 360
 361             var items = list.contents();
 362
 363             expect(items.length).to.equal(1);
 364             expect(items[0].contents()[0].getText()).to.equal('item1item2');
 365
 366             var selection = c.getSelection();
 367             expect(selection.type).to.equal('caret');
 368             expect(selection.element.sameNode(getTextElement('item1item2', c))).to.equal(true);
 369             expect(selection.offset).to.equal(5);
 370         });
 371         it('creates a new paragraph preceding the list from a first list item', function() {
 372             var c = getCanvasFromXML('<section><div class="list"><div class="item">item1</div><div class="item">item2</div></div></section>'),
 373                 list = c.wlxmlDocument.root.contents()[0],
 374                 k = new Keyboard(c);
 375
 376             k.withCaret('|item1').press(K.BACKSPACE);
 377
 378             var rootContents = c.wlxmlDocument.root.contents();
 379             expect(rootContents.length).to.equal(2);
 380
 381             expect(rootContents[0].getClass()).to.equal('p');
 382             expect(rootContents[0].contents()[0].getText()).to.equal('item1');
 383
 384             expect(rootContents[1].sameNode(list)).to.equal(true);
 385
 386             var selection = c.getSelection();
 387             expect(selection.type).to.equal('caret');
 388             expect(selection.element.sameNode(getTextElement('item1', c))).to.equal(true);
 389             expect(selection.offset).to.equal(0);
 390         });
 391         it('removes list after moving up its only item', function() {
 392             var c = getCanvasFromXML('<section><div class="list"><div class="item">item</div></div></section>'),
 393                 k = new Keyboard(c);
 394
 395             k.withCaret('|item').press(K.BACKSPACE);
 396             var rootContents = c.wlxmlDocument.root.contents();
 397             expect(rootContents.length).to.equal(1);
 398
 399             expect(rootContents[0].getClass()).to.equal('p');
 400             expect(rootContents[0].contents()[0].getText()).to.equal('item');
 401
 402             var selection = c.getSelection();
 403             expect(selection.type).to.equal('caret');
 404             expect(selection.element.sameNode(getTextElement('item', c))).to.equal(true);
 405             expect(selection.offset).to.equal(0);
 406         });
 407     });
 408
 409
 410 });
 411
 412
 413 });