6 'smartxml/transformations',
9 ], function($, _, Backbone, events, transformations, coreTransformations, fragments) {
15 var DocumentNode = function(nativeNode, document) {
17 throw new Error('undefined document for a node');
19 this.document = document;
20 this._setNativeNode(nativeNode);
24 $.extend(DocumentNode.prototype, {
26 transform: function(Transformation, args) {
27 var transformation = new Transformation(this.document, this, args);
28 return this.document.transform(transformation);
31 _setNativeNode: function(nativeNode) {
32 this.nativeNode = nativeNode;
33 this._$ = $(nativeNode);
37 var clone = this._$.clone(true, true),
39 clone.find('*').addBack().each(function() {
41 clonedData = $(this).data();
43 _.pairs(clonedData).forEach(function(pair) {
46 if(_.isFunction(value.clone)) {
47 clonedData[key] = value.clone(node.document.createDocumentNode(el));
51 return this.document.createDocumentNode(clone[0]);
54 getPath: function(ancestor) {
55 if(!(this.document.containsNode(this))) {
59 var nodePath = [this].concat(this.parents()),
61 ancestor = ancestor || this.document.root;
63 nodePath.some(function(node, i) {
64 if(node.sameNode(ancestor)) {
70 if(idx !== undefined) {
71 nodePath = nodePath.slice(0, idx);
73 toret = nodePath.map(function(node) {return node.getIndex(); });
79 return this.document.root.sameNode(this);
82 isInDocument: function() {
83 return this.document.containsNode(this);
86 isSiblingOf: function(node) {
87 return node && this.parent().sameNode(node.parent());
90 sameNode: function(otherNode) {
91 return !!(otherNode) && this.nativeNode === otherNode.nativeNode;
95 var parentNode = this.nativeNode.parentNode;
96 if(parentNode && parentNode.nodeType === Node.ELEMENT_NODE) {
97 return this.document.createDocumentNode(parentNode);
102 parents: function() {
103 var parent = this.parent(),
104 parents = parent ? parent.parents() : [];
106 parents.unshift(parent);
112 var myIdx = this.getIndex();
113 return myIdx > 0 ? this.parent().contents()[myIdx-1] : null;
120 var myIdx = this.getIndex(),
121 parentContents = this.parent().contents();
122 return myIdx < parentContents.length - 1 ? parentContents[myIdx+1] : null;
125 isSurroundedByTextNodes: function() {
126 var prev = this.prev(),
128 return prev && (prev.nodeType === Node.TEXT_NODE) && next && (next.nodeType === Node.TEXT_NODE);
131 triggerChangeEvent: function(type, metaData, origParent, nodeWasContained) {
132 var node = (metaData && metaData.node) ? metaData.node : this,
133 event = new events.ChangeEvent(type, $.extend({node: node}, metaData || {}));
134 if(type === 'nodeDetached' || this.document.containsNode(event.meta.node)) {
135 if(type === 'nodeMoved') {
136 event.meta.parent = origParent;
138 this.document.trigger('change', event);
140 if((type === 'nodeAdded' || type === 'nodeMoved') && !this.document.containsNode(this) && nodeWasContained) {
141 event = new events.ChangeEvent('nodeDetached', {node: node, parent: origParent});
142 this.document.trigger('change', event);
146 getNodeInsertion: function(node) {
147 return this.document.getNodeInsertion(node);
150 getIndex: function() {
154 return this.parent().indexOf(this);
157 getNearestElementNode: function() {
158 return this.nodeType === Node.ELEMENT_NODE ? this : this.parent();
163 var ElementNode = function(nativeNode, document) {
164 DocumentNode.call(this, nativeNode, document);
166 ElementNode.prototype = Object.create(DocumentNode.prototype);
168 $.extend(ElementNode.prototype, {
169 nodeType: Node.ELEMENT_NODE,
171 setData: function(key, value) {
172 if(value !== undefined) {
173 this._$.data(key, value);
175 this._$.removeData(_.keys(this._$.data()));
180 getData: function(key) {
182 return this._$.data(key);
184 return this._$.data();
187 getTagName: function() {
188 return this.nativeNode.tagName.toLowerCase();
191 contents: function(selector) {
193 document = this.document;
195 this._$.children(selector).each(function() {
196 toret.push(document.createDocumentNode(this));
199 this._$.contents().each(function() {
200 toret.push(document.createDocumentNode(this));
206 indexOf: function(node) {
207 return this._$.contents().index(node._$);
210 getAttr: function(name) {
211 return this._$.attr(name);
214 getAttrs: function() {
216 for(var i = 0; i < this.nativeNode.attributes.length; i++) {
217 toret.push(this.nativeNode.attributes[i]);
222 containsNode: function(node) {
223 return node && (node.nativeNode === this.nativeNode || node._$.parents().index(this._$) !== -1);
226 getLastTextNode: function() {
227 var contents = this.contents(),
230 contents.reverse().some(function(node) {
231 if(node.nodeType === Node.TEXT_NODE) {
235 toret = node.getLastTextNode();
243 var wrapper = $('<div>');
244 wrapper.append(this._getXMLDOMToDump());
245 return wrapper.html();
248 _getXMLDOMToDump: function() {
254 var TextNode = function(nativeNode, document) {
255 DocumentNode.call(this, nativeNode, document);
257 TextNode.prototype = Object.create(DocumentNode.prototype);
259 $.extend(TextNode.prototype, {
260 nodeType: Node.TEXT_NODE,
262 getText: function() {
263 return this.nativeNode.data;
267 containsNode: function() {
271 triggerTextChangeEvent: function() {
272 var event = new events.ChangeEvent('nodeTextChange', {node: this});
273 this.document.trigger('change', event);
278 var parseXML = function(xml) {
279 var toret = $($.trim(xml));
281 throw new Error('Unable to parse XML: ' + xml);
287 var registerTransformation = function(desc, name, target) {
288 var Transformation = transformations.createContextTransformation(desc, name);
289 target[name] = function() {
291 args = Array.prototype.slice.call(arguments, 0);
292 return instance.transform(Transformation, args);
296 var registerMethod = function(methodName, method, target) {
297 if(target[methodName]) {
298 throw new Error('Cannot extend {target} with method name {methodName}. Name already exists.'
299 .replace('{target}', target)
300 .replace('{methodName}', methodName)
303 target[methodName] = method;
307 var Document = function(xml, extensions) {
310 this._currentTransaction = null;
311 this._transformationLevel = 0;
313 this._nodeMethods = {};
314 this._textNodeMethods = {};
315 this._elementNodeMethods = {};
316 this._nodeTransformations = {};
317 this._textNodeTransformations = {};
318 this._elementNodeTransformations = {};
320 this.registerExtension(coreTransformations);
322 (extensions || []).forEach(function(extension) {
323 this.registerExtension(extension);
328 $.extend(Document.prototype, Backbone.Events, fragments, {
329 ElementNodeFactory: ElementNode,
330 TextNodeFactory: TextNode,
332 createDocumentNode: function(from) {
333 if(!(from instanceof Node)) {
334 if(typeof from === 'string') {
335 from = parseXML(from);
336 this.normalizeXML(from);
338 if(from.text !== undefined) {
339 /* globals document */
340 from = document.createTextNode(from.text);
343 throw new Error('tagName missing');
345 var node = $('<' + from.tagName + '>');
347 _.keys(from.attrs || {}).forEach(function(key) {
348 node.attr(key, from.attrs[key]);
355 var Factory, typeMethods, typeTransformations;
356 if(from.nodeType === Node.TEXT_NODE) {
357 Factory = this.TextNodeFactory;
358 typeMethods = this._textNodeMethods;
359 typeTransformations = this._textNodeTransformations;
360 } else if(from.nodeType === Node.ELEMENT_NODE) {
361 Factory = this.ElementNodeFactory;
362 typeMethods = this._elementNodeMethods;
363 typeTransformations = this._elementNodeTransformations;
365 var toret = new Factory(from, this);
366 _.extend(toret, this._nodeMethods);
367 _.extend(toret, typeMethods);
369 _.extend(toret, this._nodeTransformations);
370 _.extend(toret, typeTransformations);
372 toret.__super__ = _.extend({}, this._nodeMethods, this._nodeTransformations);
373 _.keys(toret.__super__).forEach(function(key) {
374 toret.__super__[key] = _.bind(toret.__super__[key], toret);
380 loadXML: function(xml, options) {
381 options = options || {};
382 this._defineDocumentProperties($(parseXML(xml)));
383 this.normalizeXML(this.dom);
384 if(!options.silent) {
385 this.trigger('contentSet');
389 normalizeXML: function(nativeNode) {
390 void(nativeNode); // noop
394 return this.root.toXML();
397 containsNode: function(node) {
398 return this.root && this.root.containsNode(node);
401 getSiblingParents: function(params) {
402 var parents1 = [params.node1].concat(params.node1.parents()).reverse(),
403 parents2 = [params.node2].concat(params.node2.parents()).reverse(),
404 noSiblingParents = null;
406 if(parents1.length === 0 || parents2.length === 0 || !(parents1[0].sameNode(parents2[0]))) {
407 return noSiblingParents;
410 var stop = Math.min(parents1.length, parents2.length),
412 for(i = 0; i < stop; i++) {
413 if(parents1[i].sameNode(parents2[i])) {
421 return {node1: parents1[i], node2: parents2[i]};
424 trigger: function() {
425 Backbone.Events.trigger.apply(this, arguments);
428 getNodeInsertion: function(node) {
430 if(node instanceof DocumentNode) {
431 insertion.ofNode = node;
432 insertion.insertsNew = !this.containsNode(node);
434 insertion.ofNode = this.createDocumentNode(node);
435 insertion.insertsNew = true;
440 registerMethod: function(methodName, method, dstName) {
444 documentNode: doc._nodeMethods,
445 textNode: doc._textNodeMethods,
446 elementNode: doc._elementNodeMethods
448 registerMethod(methodName, method, destination);
451 registerTransformation: function(desc, name, dstName) {
455 documentNode: doc._nodeTransformations,
456 textNode: doc._textNodeTransformations,
457 elementNode: doc._elementNodeTransformations
459 registerTransformation(desc, name, destination);
462 registerExtension: function(extension) {
465 ['document', 'documentNode', 'elementNode', 'textNode'].forEach(function(dstName) {
466 var dstExtension = extension[dstName];
468 if(dstExtension.methods) {
469 _.pairs(dstExtension.methods).forEach(function(pair) {
470 var methodName = pair[0],
473 doc.registerMethod(methodName, method, dstName);
478 if(dstExtension.transformations) {
479 _.pairs(dstExtension.transformations).forEach(function(pair) {
482 doc.registerTransformation(desc, name, dstName);
489 ifChanged: function(context, action, documentChangedHandler, documentUnchangedHandler) {
490 var hasChanged = false,
491 changeMonitor = function() {
495 this.on('change', changeMonitor);
496 action.call(context);
497 this.off('change', changeMonitor);
500 if(documentChangedHandler) {
501 documentChangedHandler.call(context);
504 if(documentUnchangedHandler) {
505 documentUnchangedHandler.call(context);
510 transform: function(Transformation, args) {
511 var toret, transformation;
513 if(!this._currentTransaction) {
514 return this.transaction(function() {
515 return this.transform(Transformation, args);
519 if(typeof Transformation === 'function') {
520 transformation = new Transformation(this, this, args);
522 transformation = Transformation;
525 this._transformationLevel++;
530 toret = transformation.run({beUndoable:this._transformationLevel === 1});
533 if(this._transformationLevel === 1 && !this._undoInProgress) {
534 this._currentTransaction.pushTransformation(transformation);
540 this._transformationLevel--;
543 throw new Error('Transformation ' + transformation + ' doesn\'t exist!');
547 var transaction = this.undoStack.pop(),
549 transformations, stopAt;
552 this._undoInProgress = true;
554 // We will modify this array in a minute so make sure we work on a copy.
555 transformations = transaction.transformations.slice(0);
557 if(transformations.length > 1) {
558 // In case of real transactions we don't want to run undo on all of transformations if we don't have to.
560 transformations.some(function(t, idx) {
561 if(!t.undo && t.getChangeRoot().sameNode(doc.root)) {
566 if(stopAt !== undefined) {
567 // We will get away with undoing only this transformations as the one at stopAt reverses the whole document.
568 transformations = transformations.slice(0, stopAt+1);
572 transformations.reverse();
573 transformations.forEach(function(t) {
577 this._undoInProgress = false;
578 this.redoStack.push(transaction);
579 this.trigger('operationEnd');
583 var transaction = this.redoStack.pop();
585 this._transformationLevel++;
586 transaction.transformations.forEach(function(t) {
587 t.run({beUndoable: true});
589 this._transformationLevel--;
590 this.undoStack.push(transaction);
591 this.trigger('operationEnd');
596 startTransaction: function(metadata) {
597 if(this._currentTransaction) {
598 throw new Error('Nested transactions not supported!');
600 this._rollbackBackup = this.root.clone();
601 this._currentTransaction = new Transaction([], metadata);
604 endTransaction: function() {
605 if(!this._currentTransaction) {
606 throw new Error('End of transaction requested, but there is no transaction in progress!');
608 if(this._currentTransaction.hasTransformations()) {
609 this.undoStack.push(this._currentTransaction);
610 this.trigger('operationEnd');
612 this._currentTransaction = null;
615 rollbackTransaction: function() {
616 if(!this._currentTransaction) {
617 throw new Error('Transaction rollback requested, but there is no transaction in progress!');
619 this.replaceRoot(this._rollbackBackup);
620 this._rollbackBackup = null;
621 this._currentTransaction = null;
622 this._transformationLevel = 0;
625 transaction: function(callback, params) {
627 params = params || {};
628 this.startTransaction(params.metadata);
630 toret = callback.call(params.context || this);
635 this.rollbackTransaction();
638 this.endTransaction();
640 params.success(toret);
645 getNodeByPath: function(path) {
646 var toret = this.root;
647 path.forEach(function(idx) {
648 toret = toret.contents()[idx];
653 _defineDocumentProperties: function($document) {
655 Object.defineProperty(doc, 'root', {get: function() {
659 return doc.createDocumentNode($document[0]);
660 }, configurable: true});
661 Object.defineProperty(doc, 'dom', {get: function() {
666 }, configurable: true});
669 createFragment: function(Type, params) {
670 if(!Type.prototype instanceof fragments.Fragment) {
671 throw new Error('Can\'t create a fragment: `Type` is not a valid Fragment');
673 return new Type(this, params);
677 var Transaction = function(transformations, metadata) {
678 this.transformations = transformations || [];
679 this.metadata = metadata;
681 $.extend(Transaction.prototype, {
682 pushTransformation: function(transformation) {
683 this.transformations.push(transformation);
685 hasTransformations: function() {
686 return this.transformations.length > 0;
692 documentFromXML: function(xml) {
693 var doc = new Document(xml);
697 elementNodeFromXML: function(xml) {
698 return this.documentFromXML(xml).root;
702 DocumentNode: DocumentNode,
703 ElementNode: ElementNode,