6 'smartxml/transformations',
8 ], function($, _, Backbone, events, transformations, coreTransformations) {
14 var DocumentNode = function(nativeNode, document) {
16 throw new Error('undefined document for a node');
18 this.document = document;
19 this._setNativeNode(nativeNode);
23 $.extend(DocumentNode.prototype, {
25 transform: function(Transformation, args) {
26 var transformation = new Transformation(this.document, this, args);
27 return this.document.transform(transformation);
30 _setNativeNode: function(nativeNode) {
31 this.nativeNode = nativeNode;
32 this._$ = $(nativeNode);
36 var clone = this._$.clone(true, true);
37 return this.document.createDocumentNode(clone[0]);
40 getPath: function(ancestor) {
41 if(!(this.document.containsNode(this))) {
45 var nodePath = [this].concat(this.parents()),
47 ancestor = ancestor || this.document.root;
49 nodePath.some(function(node, i) {
50 if(node.sameNode(ancestor)) {
56 if(idx !== 'undefined') {
57 nodePath = nodePath.slice(0, idx);
59 toret = nodePath.map(function(node) {return node.getIndex(); });
65 return this.document.root.sameNode(this);
68 sameNode: function(otherNode) {
69 return !!(otherNode) && this.nativeNode === otherNode.nativeNode;
73 var parentNode = this.nativeNode.parentNode;
74 if(parentNode && parentNode.nodeType === Node.ELEMENT_NODE) {
75 return this.document.createDocumentNode(parentNode);
81 var parent = this.parent(),
82 parents = parent ? parent.parents() : [];
84 parents.unshift(parent);
90 var myIdx = this.getIndex();
91 return myIdx > 0 ? this.parent().contents()[myIdx-1] : null;
98 var myIdx = this.getIndex(),
99 parentContents = this.parent().contents();
100 return myIdx < parentContents.length - 1 ? parentContents[myIdx+1] : null;
103 isSurroundedByTextElements: function() {
104 var prev = this.prev(),
106 return prev && (prev.nodeType === Node.TEXT_NODE) && next && (next.nodeType === Node.TEXT_NODE);
109 triggerChangeEvent: function(type, metaData, origParent, nodeWasContained) {
110 var node = (metaData && metaData.node) ? metaData.node : this,
111 event = new events.ChangeEvent(type, $.extend({node: node}, metaData || {}));
112 if(type === 'nodeDetached' || this.document.containsNode(event.meta.node)) {
113 this.document.trigger('change', event);
115 if((type === 'nodeAdded' || type === 'nodeMoved') && !this.document.containsNode(this) && nodeWasContained) {
116 event = new events.ChangeEvent('nodeDetached', {node: node, parent: origParent});
117 this.document.trigger('change', event);
121 getNodeInsertion: function(node) {
122 return this.document.getNodeInsertion(node);
125 getIndex: function() {
129 return this.parent().indexOf(this);
134 var ElementNode = function(nativeNode, document) {
135 DocumentNode.call(this, nativeNode, document);
137 ElementNode.prototype = Object.create(DocumentNode.prototype);
139 $.extend(ElementNode.prototype, {
140 nodeType: Node.ELEMENT_NODE,
142 setData: function(key, value) {
143 if(value !== undefined) {
144 this._$.data(key, value);
146 this._$.removeData(_.keys(this._$.data()));
151 getData: function(key) {
153 return this._$.data(key);
155 return this._$.data();
158 getTagName: function() {
159 return this.nativeNode.tagName.toLowerCase();
162 contents: function(selector) {
164 document = this.document;
166 this._$.children(selector).each(function() {
167 toret.push(document.createDocumentNode(this));
170 this._$.contents().each(function() {
171 toret.push(document.createDocumentNode(this));
177 indexOf: function(node) {
178 return this._$.contents().index(node._$);
181 getAttr: function(name) {
182 return this._$.attr(name);
185 getAttrs: function() {
187 for(var i = 0; i < this.nativeNode.attributes.length; i++) {
188 toret.push(this.nativeNode.attributes[i]);
194 var wrapper = $('<div>');
195 wrapper.append(this._getXMLDOMToDump());
196 return wrapper.html();
199 _getXMLDOMToDump: function() {
205 var TextNode = function(nativeNode, document) {
206 DocumentNode.call(this, nativeNode, document);
208 TextNode.prototype = Object.create(DocumentNode.prototype);
210 $.extend(TextNode.prototype, {
211 nodeType: Node.TEXT_NODE,
213 getText: function() {
214 return this.nativeNode.data;
217 triggerTextChangeEvent: function() {
218 var event = new events.ChangeEvent('nodeTextChange', {node: this});
219 this.document.trigger('change', event);
224 var parseXML = function(xml) {
225 var toret = $($.trim(xml));
227 throw new Error('Unable to parse XML: ' + xml);
233 var registerTransformation = function(desc, name, target) {
234 var Transformation = transformations.createContextTransformation(desc, name);
235 target[name] = function() {
237 args = Array.prototype.slice.call(arguments, 0);
238 return instance.transform(Transformation, args);
242 var registerMethod = function(methodName, method, target) {
243 if(target[methodName]) {
244 throw new Error('Cannot extend {target} with method name {methodName}. Name already exists.'
245 .replace('{target}', target)
246 .replace('{methodName}', methodName)
249 target[methodName] = method;
253 var Document = function(xml) {
257 this._transactionStack = [];
258 this._transformationLevel = 0;
260 this._nodeMethods = {};
261 this._textNodeMethods = {};
262 this._elementNodeMethods = {};
263 this._nodeTransformations = {};
264 this._textNodeTransformations = {};
265 this._elementNodeTransformations = {};
267 this.registerExtension(coreTransformations);
270 $.extend(Document.prototype, Backbone.Events, {
271 ElementNodeFactory: ElementNode,
272 TextNodeFactory: TextNode,
274 createDocumentNode: function(from) {
275 if(!(from instanceof Node)) {
276 if(typeof from === 'string') {
277 from = parseXML(from);
278 this.normalizeXML(from);
280 if(from.text !== undefined) {
281 /* globals document */
282 from = document.createTextNode(from.text);
285 throw new Error('tagName missing');
287 var node = $('<' + from.tagName + '>');
289 _.keys(from.attrs || {}).forEach(function(key) {
290 node.attr(key, from.attrs[key]);
297 var Factory, typeMethods, typeTransformations;
298 if(from.nodeType === Node.TEXT_NODE) {
299 Factory = this.TextNodeFactory;
300 typeMethods = this._textNodeMethods;
301 typeTransformations = this._textNodeTransformations;
302 } else if(from.nodeType === Node.ELEMENT_NODE) {
303 Factory = this.ElementNodeFactory;
304 typeMethods = this._elementNodeMethods;
305 typeTransformations = this._elementNodeTransformations;
307 var toret = new Factory(from, this);
308 _.extend(toret, this._nodeMethods);
309 _.extend(toret, typeMethods);
311 _.extend(toret, this._nodeTransformations);
312 _.extend(toret, typeTransformations);
314 toret.__super__ = _.extend({}, this._nodeMethods, this._nodeTransformations);
315 _.keys(toret.__super__).forEach(function(key) {
316 toret.__super__[key] = _.bind(toret.__super__[key], toret);
322 loadXML: function(xml, options) {
323 options = options || {};
324 this._defineDocumentProperties($(parseXML(xml)));
325 this.normalizeXML(this.dom);
326 if(!options.silent) {
327 this.trigger('contentSet');
331 normalizeXML: function(nativeNode) {
332 void(nativeNode); // noop
336 return this.root.toXML();
339 containsNode: function(node) {
340 return this.root && (node.nativeNode === this.root.nativeNode || node._$.parents().index(this.root._$) !== -1);
343 getSiblingParents: function(params) {
344 var parents1 = [params.node1].concat(params.node1.parents()).reverse(),
345 parents2 = [params.node2].concat(params.node2.parents()).reverse(),
346 noSiblingParents = null;
348 if(parents1.length === 0 || parents2.length === 0 || !(parents1[0].sameNode(parents2[0]))) {
349 return noSiblingParents;
353 for(i = 0; i < Math.min(parents1.length, parents2.length); i++) {
354 if(parents1[i].sameNode(parents2[i])) {
359 return {node1: parents1[i], node2: parents2[i]};
362 trigger: function() {
363 Backbone.Events.trigger.apply(this, arguments);
366 getNodeInsertion: function(node) {
368 if(node instanceof DocumentNode) {
369 insertion.ofNode = node;
370 insertion.insertsNew = !this.containsNode(node);
372 insertion.ofNode = this.createDocumentNode(node);
373 insertion.insertsNew = true;
378 registerMethod: function(methodName, method, dstName) {
382 documentNode: doc._nodeMethods,
383 textNode: doc._textNodeMethods,
384 elementNode: doc._elementNodeMethods
386 registerMethod(methodName, method, destination);
389 registerTransformation: function(desc, name, dstName) {
393 documentNode: doc._nodeTransformations,
394 textNode: doc._textNodeTransformations,
395 elementNode: doc._elementNodeTransformations
397 registerTransformation(desc, name, destination);
400 registerExtension: function(extension) {
403 ['document', 'documentNode', 'elementNode', 'textNode'].forEach(function(dstName) {
404 var dstExtension = extension[dstName];
406 if(dstExtension.methods) {
407 _.pairs(dstExtension.methods).forEach(function(pair) {
408 var methodName = pair[0],
411 doc.registerMethod(methodName, method, dstName);
416 if(dstExtension.transformations) {
417 _.pairs(dstExtension.transformations).forEach(function(pair) {
420 doc.registerTransformation(desc, name, dstName);
427 transform: function(Transformation, args) {
428 var toret, transformation;
430 if(typeof Transformation === 'function') {
431 transformation = new Transformation(this, this, args);
433 transformation = Transformation;
436 this._transformationLevel++;
437 toret = transformation.run({beUndoable:this._transformationLevel === 1});
438 if(this._transformationLevel === 1 && !this._undoInProgress) {
439 if(this._transactionInProgress) {
440 this._transactionStack.push(transformation);
442 this.undoStack.push(transformation);
445 if(!this._undoInProgress && this._transformationLevel === 1) {
448 this._transformationLevel--;
451 throw new Error('Transformation ' + transformation + ' doesn\'t exist!');
455 var transformationObject = this.undoStack.pop(),
457 transformations, stopAt;
459 if(transformationObject) {
460 this._undoInProgress = true;
462 if(_.isArray(transformationObject)) {
463 // We will modify this array in a minute so make sure we work on a copy.
464 transformations = transformationObject.slice(0);
466 // Lets normalize single transformation to a transaction containing one transformation.
467 transformations = [transformationObject];
470 if(transformations.length > 1) {
471 // In case of real transactions we don't want to run undo on all of transformations if we don't have to.
473 transformations.some(function(t, idx) {
474 if(!t.undo && t.getChangeRoot().sameNode(doc.root)) {
479 if(stopAt !== undefined) {
480 // We will get away with undoing only this transformations as the one at stopAt reverses the whole document.
481 transformations = transformations.slice(0, stopAt+1);
485 transformations.reverse();
486 transformations.forEach(function(t) {
490 this._undoInProgress = false;
491 this.redoStack.push(transformationObject);
495 var transformationObject = this.redoStack.pop(),
497 if(transformationObject) {
498 this._transformationLevel++;
499 transformations = _.isArray(transformationObject) ? transformationObject : [transformationObject];
500 transformations.forEach(function(t) {
501 t.run({beUndoable: true});
503 this._transformationLevel--;
504 this.undoStack.push(transformationObject);
508 startTransaction: function() {
509 if(this._transactionInProgress) {
510 throw new Error('Nested transactions not supported!');
512 this._transactionInProgress = true;
515 endTransaction: function() {
516 if(!this._transactionInProgress) {
517 throw new Error('End of transaction requested, but there is no transaction in progress!');
519 this._transactionInProgress = false;
520 if(this._transactionStack.length) {
521 this.undoStack.push(this._transactionStack);
522 this._transactionStack = [];
526 getNodeByPath: function(path) {
527 var toret = this.root;
528 path.forEach(function(idx) {
529 toret = toret.contents()[idx];
534 _defineDocumentProperties: function($document) {
536 Object.defineProperty(doc, 'root', {get: function() {
537 return doc.createDocumentNode($document[0]);
538 }, configurable: true});
539 Object.defineProperty(doc, 'dom', {get: function() {
541 }, configurable: true});
547 documentFromXML: function(xml) {
548 var doc = new Document(xml);
552 elementNodeFromXML: function(xml) {
553 return this.documentFromXML(xml).root;
557 DocumentNode: DocumentNode,
558 ElementNode: ElementNode,