X-Git-Url: https://git.mdrn.pl/fnpeditor.git/blobdiff_plain/e1f340cca43eafb33256f439cac74689d783f292..160268708973c7ba08f277a9d2e7cf8b9aeed1c8:/src/smartxml/smartxml.js?ds=inline diff --git a/src/smartxml/smartxml.js b/src/smartxml/smartxml.js index 4e8e575..8039916 100644 --- a/src/smartxml/smartxml.js +++ b/src/smartxml/smartxml.js @@ -2,65 +2,69 @@ define([ 'libs/jquery', 'libs/underscore', 'libs/backbone', - 'smartxml/events' -], function($, _, Backbone, events) { + 'smartxml/events', + 'smartxml/transformations', + 'smartxml/core', + 'smartxml/fragments' +], function($, _, Backbone, events, transformations, coreTransformations, fragments) { 'use strict'; /* globals Node */ -var TEXT_NODE = Node.TEXT_NODE; - - -var INSERTION = function(implementation) { - var toret = function(node) { - var insertion = this.getNodeInsertion(node), - nodeParent; - if(!(this.document.containsNode(this))) { - nodeParent = insertion.ofNode.parent(); - } - implementation.call(this, insertion.ofNode.nativeNode); - this.triggerChangeEvent(insertion.insertsNew ? 'nodeAdded' : 'nodeMoved', {node: insertion.ofNode}, nodeParent); - return insertion.ofNode; - }; - return toret; -}; - -// var TRANSFORMATION = function(name, implementation) { -// //implementation._isTransformation = true; - -// createDumbTransformation(name, implementation, ) - -// return implementation; -// }; var DocumentNode = function(nativeNode, document) { if(!document) { throw new Error('undefined document for a node'); } this.document = document; + this.object = {}; this._setNativeNode(nativeNode); }; $.extend(DocumentNode.prototype, { + + getProperty: function(propName) { + var toret = this.object[propName]; + if(toret && _.isFunction(toret)) { + toret = toret.call(this); + } + return toret; + }, + + transform: function(Transformation, args) { + var transformation = new Transformation(this.document, this, args); + return this.document.transform(transformation); + }, + _setNativeNode: function(nativeNode) { this.nativeNode = nativeNode; this._$ = $(nativeNode); }, clone: function() { - var clone = this._$.clone(true, true); - // clone.find('*').addBack().each(function() { - // var n = $(this); - // if(n.data('canvasElement')) { - // n.data('canvasElement', $.extend(true, {}, n.data('canvasElement'))); - // n.data('canvasElement').$element = n.data('canvasElement').$element.clone(true, true); - // } - // }); + var clone = this._$.clone(true, true), + node = this; + clone.find('*').addBack().each(function() { + var el = this, + clonedData = $(this).data(); + + _.pairs(clonedData).forEach(function(pair) { + var key = pair[0], + value = pair[1]; + if(_.isFunction(value.clone)) { + clonedData[key] = value.clone(node.document.createDocumentNode(el)); + } + }); + }); return this.document.createDocumentNode(clone[0]); }, getPath: function(ancestor) { + if(!(this.document.containsNode(this))) { + return null; + } + var nodePath = [this].concat(this.parents()), toret, idx; ancestor = ancestor || this.document.root; @@ -72,7 +76,7 @@ $.extend(DocumentNode.prototype, { } }); - if(idx !== 'undefined') { + if(idx !== undefined) { nodePath = nodePath.slice(0, idx); } toret = nodePath.map(function(node) {return node.getIndex(); }); @@ -84,21 +88,12 @@ $.extend(DocumentNode.prototype, { return this.document.root.sameNode(this); }, - detach: function() { - var parent = this.parent(); - this._$.detach(); - this.triggerChangeEvent('nodeDetached', {parent: parent}); - return this; + isInDocument: function() { + return this.document.containsNode(this); }, - replaceWith: function(node) { - var toret; - if(this.isRoot()) { - return this.document.replaceRoot(node); - } - toret = this.after(node); - this.detach(); - return toret; + isSiblingOf: function(node) { + return node && this.parent().sameNode(node.parent()); }, sameNode: function(otherNode) { @@ -136,52 +131,27 @@ $.extend(DocumentNode.prototype, { return myIdx < parentContents.length - 1 ? parentContents[myIdx+1] : null; }, - isSurroundedByTextElements: function() { - var prev = this.prev(), - next = this.next(); - return prev && (prev.nodeType === Node.TEXT_NODE) && next && (next.nodeType === Node.TEXT_NODE); + isSurroundedByTextNodes: function() { + return this.isPrecededByTextNode() && this.isFollowedByTextNode(); }, - after: INSERTION(function(nativeNode) { - return this._$.after(nativeNode); - }), - - before: INSERTION(function(nativeNode) { - return this._$.before(nativeNode); - }), - - wrapWith: function(node) { - var insertion = this.getNodeInsertion(node); - if(this.parent()) { - this.before(insertion.ofNode); - } - insertion.ofNode.append(this); - return insertion.ofNode; + isPrecededByTextNode: function() { + var prev = this.prev(); + return prev && prev.nodeType === Node.TEXT_NODE; }, - /** - * Removes parent of a node if node has no siblings. - */ - unwrap: function() { - if(this.isRoot()) { - return; - } - var parent = this.parent(), - grandParent; - if(parent.contents().length === 1) { - grandParent = parent.parent(); - parent.unwrapContent(); - return grandParent; - } + isFollowedByTextNode: function() { + var next = this.next(); + return next && next.nodeType === Node.TEXT_NODE; }, - triggerChangeEvent: function(type, metaData, origParent) { + triggerChangeEvent: function(type, metaData, origParent, nodeWasContained) { var node = (metaData && metaData.node) ? metaData.node : this, event = new events.ChangeEvent(type, $.extend({node: node}, metaData || {})); if(type === 'nodeDetached' || this.document.containsNode(event.meta.node)) { this.document.trigger('change', event); } - if((type === 'nodeAdded' || type === 'nodeMoved') && !(this.document.containsNode(this))) { + if(type === 'nodeAdded' && !this.document.containsNode(this) && nodeWasContained) { event = new events.ChangeEvent('nodeDetached', {node: node, parent: origParent}); this.document.trigger('change', event); } @@ -196,9 +166,14 @@ $.extend(DocumentNode.prototype, { return 0; } return this.parent().indexOf(this); + }, + + getNearestElementNode: function() { + return this.nodeType === Node.ELEMENT_NODE ? this : this.parent(); } }); + var ElementNode = function(nativeNode, document) { DocumentNode.call(this, nativeNode, document); }; @@ -207,22 +182,16 @@ ElementNode.prototype = Object.create(DocumentNode.prototype); $.extend(ElementNode.prototype, { nodeType: Node.ELEMENT_NODE, - detach: function() { - var next; - if(this.parent() && this.isSurroundedByTextElements()) { - next = this.next(); - this.prev().appendText(next.getText()); - next.detach(); - } - return DocumentNode.prototype.detach.call(this); - }, - - setData: function(key, value) { - if(value !== undefined) { - this._$.data(key, value); + setData: function(arg1, arg2) { + if(arguments.length === 2) { + if(_.isUndefined(arg2)) { + this._$.removeData(arg1); + } else { + this._$.data(arg1, arg2); + } } else { this._$.removeData(_.keys(this._$.data())); - this._$.data(key); + this._$.data(arg1); } }, @@ -237,12 +206,18 @@ $.extend(ElementNode.prototype, { return this.nativeNode.tagName.toLowerCase(); }, - contents: function() { + contents: function(selector) { var toret = [], document = this.document; - this._$.contents().each(function() { - toret.push(document.createDocumentNode(this)); - }); + if(selector) { + this._$.children(selector).each(function() { + toret.push(document.createDocumentNode(this)); + }); + } else { + this._$.contents().each(function() { + toret.push(document.createDocumentNode(this)); + }); + } return toret; }, @@ -250,37 +225,10 @@ $.extend(ElementNode.prototype, { return this._$.contents().index(node._$); }, - setTag: function(tagName) { - var node = this.document.createDocumentNode({tagName: tagName}), - oldTagName = this.getTagName(), - myContents = this._$.contents(); - - this.getAttrs().forEach(function(attribute) { - node.setAttr(attribute.name, attribute.value, true); - }); - node.setData(this.getData()); - - if(this.sameNode(this.document.root)) { - defineDocumentProperties(this.document, node._$); - } - this._$.replaceWith(node._$); - this._setNativeNode(node._$[0]); - this._$.append(myContents); - this.triggerChangeEvent('nodeTagChange', {oldTagName: oldTagName, newTagName: this.getTagName()}); - }, - getAttr: function(name) { return this._$.attr(name); }, - setAttr: function(name, value, silent) { - var oldVal = this.getAttr(name); - this._$.attr(name, value); - if(!silent) { - this.triggerChangeEvent('nodeAttrChange', {attr: name, oldVal: oldVal, newVal: value}); - } - }, - getAttrs: function() { var toret = []; for(var i = 0; i < this.nativeNode.attributes.length; i++) { @@ -289,74 +237,24 @@ $.extend(ElementNode.prototype, { return toret; }, - append: INSERTION(function(nativeNode) { - this._$.append(nativeNode); - }), - - prepend: INSERTION(function(nativeNode) { - this._$.prepend(nativeNode); - }), - - insertAtIndex: function(nativeNode, index) { - var contents = this.contents(); - if(index < contents.length) { - return contents[index].before(nativeNode); - } else if(index === contents.length) { - return this.append(nativeNode); - } + containsNode: function(node) { + return node && (node.nativeNode === this.nativeNode || node._$.parents().index(this._$) !== -1); }, - unwrapContent: function() { - var parent = this.parent(); - if(!parent) { - return; - } - - var myContents = this.contents(), - myIdx = parent.indexOf(this); - - - if(myContents.length === 0) { - return this.detach(); - } - - var prev = this.prev(), - next = this.next(), - moveLeftRange, moveRightRange, leftMerged; + getLastTextNode: function() { + var contents = this.contents(), + toret; - if(prev && (prev.nodeType === TEXT_NODE) && (myContents[0].nodeType === TEXT_NODE)) { - prev.appendText(myContents[0].getText()); - myContents[0].detach(); - moveLeftRange = true; - leftMerged = true; - } else { - leftMerged = false; - } - - if(!(leftMerged && myContents.length === 1)) { - var lastContents = _.last(myContents); - if(next && (next.nodeType === TEXT_NODE) && (lastContents.nodeType === TEXT_NODE)) { - next.prependText(lastContents.getText()); - lastContents.detach(); - moveRightRange = true; + contents.reverse().some(function(node) { + if(node.nodeType === Node.TEXT_NODE) { + toret = node; + return true; } - } - - var childrenLength = this.contents().length; - this.contents().forEach(function(child) { - this.before(child); - }.bind(this)); - - this.detach(); - - return { - element1: parent.contents()[myIdx + (moveLeftRange ? -1 : 0)], - element2: parent.contents()[myIdx + childrenLength-1 + (moveRightRange ? 1 : 0)] - }; - }, + toret = node.getLastTextNode(); + return !!toret; + }); - wrapText: function(params) { - return this.document._wrapText(_.extend({inside: this}, params)); + return toret; }, toXML: function() { @@ -370,6 +268,7 @@ $.extend(ElementNode.prototype, { } }); + var TextNode = function(nativeNode, document) { DocumentNode.call(this, nativeNode, document); }; @@ -382,71 +281,9 @@ $.extend(TextNode.prototype, { return this.nativeNode.data; }, - setText: function(text) { - this.nativeNode.data = text; - this.triggerTextChangeEvent(); - }, - - appendText: function(text) { - this.nativeNode.data = this.nativeNode.data + text; - this.triggerTextChangeEvent(); - }, - - prependText: function(text) { - this.nativeNode.data = text + this.nativeNode.data; - this.triggerTextChangeEvent(); - }, - - wrapWith: function(desc) { - if(typeof desc.start === 'number' && typeof desc.end === 'number') { - return this.document._wrapText({ - inside: this.parent(), - textNodeIdx: this.parent().indexOf(this), - offsetStart: Math.min(desc.start, desc.end), - offsetEnd: Math.max(desc.start, desc.end), - _with: {tagName: desc.tagName, attrs: desc.attrs} - }); - } else { - return DocumentNode.prototype.wrapWith.call(this, desc); - } - }, - - split: function(params) { - var parentElement = this.parent(), - passed = false, - succeedingChildren = [], - prefix = this.getText().substr(0, params.offset), - suffix = this.getText().substr(params.offset); - - parentElement.contents().forEach(function(child) { - if(passed) { - succeedingChildren.push(child); - } - if(child.sameNode(this)) { - passed = true; - } - }.bind(this)); - - if(prefix.length > 0) { - this.setText(prefix); - } - else { - this.detach(); - } - var attrs = {}; - parentElement.getAttrs().forEach(function(attr) {attrs[attr.name] = attr.value; }); - var newElement = this.document.createDocumentNode({tagName: parentElement.getTagName(), attrs: attrs}); - parentElement.after(newElement); - - if(suffix.length > 0) { - newElement.append({text: suffix}); - } - succeedingChildren.forEach(function(child) { - newElement.append(child); - }); - - return {first: parentElement, second: newElement}; + containsNode: function() { + return false; }, triggerTextChangeEvent: function() { @@ -457,93 +294,126 @@ $.extend(TextNode.prototype, { var parseXML = function(xml) { - return $($.trim(xml))[0]; + var toret = $($.trim(xml)); + if(!toret.length) { + throw new Error('Unable to parse XML: ' + xml); + } + return toret[0]; + }; -var Document = function(xml) { - this.loadXML(xml); +var registerTransformation = function(desc, name, target) { + var Transformation = transformations.createContextTransformation(desc, name); + target[name] = function() { + var instance = this, + args = Array.prototype.slice.call(arguments, 0); + return instance.transform(Transformation, args); + }; +}; + +var registerMethod = function(methodName, method, target) { + if(target[methodName]) { + throw new Error('Cannot extend {target} with method name {methodName}. Name already exists.' + .replace('{target}', target) + .replace('{methodName}', methodName) + ); + } + target[methodName] = method; +}; + + +var Document = function(xml, extensions) { this.undoStack = []; this.redoStack = []; + this._currentTransaction = null; + this._transformationLevel = 0; + + this._nodeMethods = {}; + this._textNodeMethods = {}; + this._elementNodeMethods = {}; + this._nodeTransformations = {}; + this._textNodeTransformations = {}; + this._elementNodeTransformations = {}; + + this.registerExtension(coreTransformations); + + (extensions || []).forEach(function(extension) { + this.registerExtension(extension); + }.bind(this)); + this.loadXML(xml); }; -$.extend(Document.prototype, Backbone.Events, { +$.extend(Document.prototype, Backbone.Events, fragments, { ElementNodeFactory: ElementNode, TextNodeFactory: TextNode, createDocumentNode: function(from) { if(!(from instanceof Node)) { - if(from.text !== undefined) { - /* globals document */ - from = document.createTextNode(from.text); + if(typeof from === 'string') { + from = parseXML(from); + this.normalizeXML(from); } else { - var node = $('<' + from.tagName + '>'); - - _.keys(from.attrs || {}).forEach(function(key) { - node.attr(key, from.attrs[key]); - }); - - from = node[0]; + if(from.text !== undefined) { + /* globals document */ + from = document.createTextNode(from.text); + } else { + if(!from.tagName) { + throw new Error('tagName missing'); + } + var node = $('<' + from.tagName + '>'); + + _.keys(from.attrs || {}).forEach(function(key) { + node.attr(key, from.attrs[key]); + }); + + from = node[0]; + } } } - var Factory; + var Factory, typeMethods, typeTransformations; if(from.nodeType === Node.TEXT_NODE) { Factory = this.TextNodeFactory; + typeMethods = this._textNodeMethods; + typeTransformations = this._textNodeTransformations; } else if(from.nodeType === Node.ELEMENT_NODE) { Factory = this.ElementNodeFactory; + typeMethods = this._elementNodeMethods; + typeTransformations = this._elementNodeTransformations; } - return new Factory(from, this); + var toret = new Factory(from, this); + _.extend(toret, this._nodeMethods); + _.extend(toret, typeMethods); + + _.extend(toret, this._nodeTransformations); + _.extend(toret, typeTransformations); + + toret.__super__ = _.extend({}, this._nodeMethods, this._nodeTransformations); + _.keys(toret.__super__).forEach(function(key) { + toret.__super__[key] = _.bind(toret.__super__[key], toret); + }); + + return toret; }, loadXML: function(xml, options) { options = options || {}; - defineDocumentProperties(this, $(parseXML(xml))); + this._defineDocumentProperties($(parseXML(xml))); + this.normalizeXML(this.dom); if(!options.silent) { this.trigger('contentSet'); } }, + normalizeXML: function(nativeNode) { + void(nativeNode); // noop + }, + toXML: function() { return this.root.toXML(); }, containsNode: function(node) { - return this.root && (node.nativeNode === this.root.nativeNode || node._$.parents().index(this.root._$) !== -1); - }, - - wrapNodes: function(params) { - if(!(params.node1.parent().sameNode(params.node2.parent()))) { - throw new Error('Wrapping non-sibling nodes not supported.'); - } - - var parent = params.node1.parent(), - parentContents = parent.contents(), - wrapper = this.createDocumentNode({ - tagName: params._with.tagName, - attrs: params._with.attrs}), - idx1 = parent.indexOf(params.node1), - idx2 = parent.indexOf(params.node2); - - if(idx1 > idx2) { - var tmp = idx1; - idx1 = idx2; - idx2 = tmp; - } - - var insertingMethod, insertingTarget; - if(idx1 === 0) { - insertingMethod = 'prepend'; - insertingTarget = parent; - } else { - insertingMethod = 'after'; - insertingTarget = parentContents[idx1-1]; - } - - for(var i = idx1; i <= idx2; i++) { - wrapper.append(parentContents[i].detach()); - } - - insertingTarget[insertingMethod](wrapper); - return wrapper; + return this.root && this.root.containsNode(node); }, getSiblingParents: function(params) { @@ -555,68 +425,21 @@ $.extend(Document.prototype, Backbone.Events, { return noSiblingParents; } - var i; - for(i = 0; i < Math.min(parents1.length, parents2.length); i++) { + var stop = Math.min(parents1.length, parents2.length), + i; + for(i = 0; i < stop; i++) { if(parents1[i].sameNode(parents2[i])) { continue; } break; } - return {node1: parents1[i], node2: parents2[i]}; - }, - - _wrapText: function(params) { - params = _.extend({textNodeIdx: 0}, params); - if(typeof params.textNodeIdx === 'number') { - params.textNodeIdx = [params.textNodeIdx]; + if(i === stop) { + i--; } - - var contentsInside = params.inside.contents(), - idx1 = Math.min.apply(Math, params.textNodeIdx), - idx2 = Math.max.apply(Math, params.textNodeIdx), - textNode1 = contentsInside[idx1], - textNode2 = contentsInside[idx2], - sameNode = textNode1.sameNode(textNode2), - prefixOutside = textNode1.getText().substr(0, params.offsetStart), - prefixInside = textNode1.getText().substr(params.offsetStart), - suffixInside = textNode2.getText().substr(0, params.offsetEnd), - suffixOutside = textNode2.getText().substr(params.offsetEnd) - ; - - if(!(textNode1.parent().sameNode(textNode2.parent()))) { - throw new Error('Wrapping text in non-sibling text nodes not supported.'); - } - - var wrapperElement = this.createDocumentNode({tagName: params._with.tagName, attrs: params._with.attrs}); - textNode1.after(wrapperElement); - textNode1.detach(); - - if(prefixOutside.length > 0) { - wrapperElement.before({text:prefixOutside}); - } - if(sameNode) { - var core = textNode1.getText().substr(params.offsetStart, params.offsetEnd - params.offsetStart); - wrapperElement.append({text: core}); - } else { - textNode2.detach(); - if(prefixInside.length > 0) { - wrapperElement.append({text: prefixInside}); - } - for(var i = idx1 + 1; i < idx2; i++) { - wrapperElement.append(contentsInside[i]); - } - if(suffixInside.length > 0) { - wrapperElement.append({text: suffixInside}); - } - } - if(suffixOutside.length > 0) { - wrapperElement.after({text: suffixOutside}); - } - return wrapperElement; + return {node1: parents1[i], node2: parents2[i]}; }, trigger: function() { - //console.log('trigger: ' + arguments[0] + (arguments[1] ? ', ' + arguments[1].type : '')); Backbone.Events.trigger.apply(this, arguments); }, @@ -632,188 +455,261 @@ $.extend(Document.prototype, Backbone.Events, { return insertion; }, - replaceRoot: function(node) { - var insertion = this.getNodeInsertion(node); - this.root.detach(); - defineDocumentProperties(this, insertion.ofNode._$); - insertion.ofNode.triggerChangeEvent('nodeAdded'); - return insertion.ofNode; + registerMethod: function(methodName, method, dstName) { + var doc = this; + var destination = { + document: doc, + documentNode: doc._nodeMethods, + textNode: doc._textNodeMethods, + elementNode: doc._elementNodeMethods + }[dstName]; + registerMethod(methodName, method, destination); + }, + + registerTransformation: function(desc, name, dstName) { + var doc = this; + var destination = { + document: doc, + documentNode: doc._nodeTransformations, + textNode: doc._textNodeTransformations, + elementNode: doc._elementNodeTransformations + }[dstName]; + registerTransformation(desc, name, destination); + }, + + registerExtension: function(extension) { + var doc = this; + + ['document', 'documentNode', 'elementNode', 'textNode'].forEach(function(dstName) { + var dstExtension = extension[dstName]; + if(dstExtension) { + if(dstExtension.methods) { + _.pairs(dstExtension.methods).forEach(function(pair) { + var methodName = pair[0], + method = pair[1]; + + doc.registerMethod(methodName, method, dstName); + + }); + } + + if(dstExtension.transformations) { + _.pairs(dstExtension.transformations).forEach(function(pair) { + var name = pair[0], + desc = pair[1]; + doc.registerTransformation(desc, name, dstName); + }); + } + } + }); }, - transform: function(transformationName, args) { - var Transformation = transformations[transformationName], - transformation; - if(Transformation) { - transformation = new Transformation(args); - transformation.run(); - this.undoStack.push(transformation); - this.redoStack = []; + ifChanged: function(context, action, documentChangedHandler, documentUnchangedHandler) { + var hasChanged = false, + changeMonitor = function() { + hasChanged = true; + }; + + this.on('change', changeMonitor); + action.call(context); + this.off('change', changeMonitor); + + if(hasChanged) { + if(documentChangedHandler) { + documentChangedHandler.call(context); + } } else { - throw new Error('Transformation ' + transformationName + ' doesn\'t exist!'); + if(documentUnchangedHandler) { + documentUnchangedHandler.call(context); + } } }, - undo: function() { - var transformation = this.undoStack.pop(); + + transform: function(Transformation, args) { + var toret, transformation; + + if(!this._currentTransaction) { + return this.transaction(function() { + return this.transform(Transformation, args); + }, {context: this}); + } + + if(typeof Transformation === 'function') { + transformation = new Transformation(this, this, args); + } else { + transformation = Transformation; + } if(transformation) { - transformation.undo(); - this.redoStack.push(transformation); + this._transformationLevel++; + + this.ifChanged( + this, + function() { + toret = transformation.run({beUndoable:this._transformationLevel === 1}); + }, + function() { + if(this._transformationLevel === 1 && !this._undoInProgress) { + this._currentTransaction.pushTransformation(transformation); + this.redoStack = []; + } + } + ); + + this._transformationLevel--; + return toret; + } else { + throw new Error('Transformation ' + transformation + ' doesn\'t exist!'); + } + }, + undo: function() { + var transaction = this.undoStack.pop(), + doc = this, + transformations, stopAt; + + if(transaction) { + this._undoInProgress = true; + + // We will modify this array in a minute so make sure we work on a copy. + transformations = transaction.transformations.slice(0); + + if(transformations.length > 1) { + // In case of real transactions we don't want to run undo on all of transformations if we don't have to. + stopAt = undefined; + transformations.some(function(t, idx) { + if(!t.undo && t.getChangeRoot().sameNode(doc.root)) { + stopAt = idx; + return true; //break + } + }); + if(stopAt !== undefined) { + // We will get away with undoing only this transformations as the one at stopAt reverses the whole document. + transformations = transformations.slice(0, stopAt+1); + } + } + + transformations.reverse(); + transformations.forEach(function(t) { + t.undo(); + }); + + this._undoInProgress = false; + this.redoStack.push(transaction); + this.trigger('operationEnd'); } }, redo: function() { - var transformation = this.redoStack.pop(); - if(transformation) { - transformation.run(); - this.undoStack.push(transformation); + var transaction = this.redoStack.pop(); + if(transaction) { + this._transformationLevel++; + transaction.transformations.forEach(function(t) { + t.run({beUndoable: true}); + }); + this._transformationLevel--; + this.undoStack.push(transaction); + this.trigger('operationEnd'); + } }, + startTransaction: function(metadata) { + if(this._currentTransaction) { + throw new Error('Nested transactions not supported!'); + } + this._rollbackBackup = this.root.clone(); + this._currentTransaction = new Transaction([], metadata); + }, + + endTransaction: function() { + if(!this._currentTransaction) { + throw new Error('End of transaction requested, but there is no transaction in progress!'); + } + if(this._currentTransaction.hasTransformations()) { + this.undoStack.push(this._currentTransaction); + this.trigger('operationEnd'); + } + this._currentTransaction = null; + }, + + rollbackTransaction: function() { + if(!this._currentTransaction) { + throw new Error('Transaction rollback requested, but there is no transaction in progress!'); + } + this.replaceRoot(this._rollbackBackup); + this._rollbackBackup = null; + this._currentTransaction = null; + this._transformationLevel = 0; + }, + + transaction: function(callback, params) { + var toret; + params = params || {}; + this.startTransaction(params.metadata); + try { + toret = callback.call(params.context || this); + } catch(e) { + if(params.error) { + params.error(e); + } + this.rollbackTransaction(); + return; + } + this.endTransaction(); + if(params.success) { + params.success(toret); + } + return toret; + }, + getNodeByPath: function(path) { var toret = this.root; path.forEach(function(idx) { toret = toret.contents()[idx]; }); return toret; - } -}); - -var defineDocumentProperties = function(doc, $document) { - Object.defineProperty(doc, 'root', {get: function() { - return doc.createDocumentNode($document[0]); - }, configurable: true}); - Object.defineProperty(doc, 'dom', {get: function() { - return $document[0]; - }, configurable: true}); -}; - - -// var registerTransformationsFromObject = function(object) { -// _.values(object).filter(function(val) { -// return typeof val === 'function' && val._isTransformation; -// }) -// .forEach(function(val) { -// registerTransformation(val._transformationName, val, object); -// }); -// }; -// registerTransformationsFromObject(ElementNode.prototype); -// registerTransformationsFromObject(TextNode.prototype); -// registerTransformationsFromObject(Document.prototype); - -// var Transformation = function() { -// }; -// $.extend(Transformation.prototype, { - -// }); - - -// var createDumbTransformation = function(impl, contextObject) { -// var DumbTransformation = function(args) { -// this.args = this.args; -// }; -// DumbTransformation.prototype = Object.create(Transformation.prototype); -// $.extend(DumbTransformation.prototype, { -// run: function() { -// impl.apply(contextObject, this.args); -// } -// }); - -// return DumbTransformation; - - -// }; - -var transformations = {}; -// var registerTransformation = function(name, impl, contextObject) { -// if(typeof impl === 'function') { -// transformations[name] = createDumbTransformation(impl, contextObject); -// } -// }; - -// registerTransformation('detachx', DocumentNode.prototype.detach, ) - - -// 1. detach via totalny fallback -var DetachNodeTransformation = function(args) { - this.node = args.node; - this.document = this.node.document; -}; -$.extend(DetachNodeTransformation.prototype, { - run: function() { - this.oldRoot = this.node.document.root.clone(); - this.path = this.node.getPath(); - this.node.detach(); // @TS - }, - undo: function() { - this.document.root.replaceWith(this.oldRoot); // this.getDocument? - this.node = this.document.getNodeByPath(this.path); - } -}); -transformations['detach'] = DetachNodeTransformation; - -//2. detach via wskazanie changeroot -var Detach2NodeTransformation = function(args) { - this.nodePath = args.node.getPath(); - this.document = args.node.document; -}; -$.extend(Detach2NodeTransformation.prototype, { - run: function() { - var node = this.document.getNodeByPath(this.nodePath), - root = node.parent() ? node.parent() : this.document.root; - - this.rootPath = root.getPath(); - this.oldRoot = (root).clone(); - node.detach(); + _defineDocumentProperties: function($document) { + var doc = this; + Object.defineProperty(doc, 'root', {get: function() { + if(!$document) { + return null; + } + return doc.createDocumentNode($document[0]); + }, configurable: true}); + Object.defineProperty(doc, 'dom', {get: function() { + if(!$document) { + return null; + } + return $document[0]; + }, configurable: true}); }, - undo: function() { - this.document.getNodeByPath(this.rootPath).replaceWith(this.oldRoot); + + createFragment: function(Type, params) { + if(!Type.prototype instanceof fragments.Fragment) { + throw new Error('Can\'t create a fragment: `Type` is not a valid Fragment'); + } + return new Type(this, params); } }); -transformations['detach2'] = Detach2NodeTransformation; -//3. detach z pełnym własnym redo - -var Detach3NodeTransformation = function(args) { - this.node = args.node; - this.document = this.node.document; +var Transaction = function(transformations, metadata) { + this.transformations = transformations || []; + this.metadata = metadata; }; -$.extend(Detach3NodeTransformation.prototype, { - run: function() { - //this.index = this.node.getIndex(); - //this.parent = this.node.parent(); - - this.path = this.node.getPath(); - if(this.node.isSurroundedByTextElements()) { - this.prevText = this.node.prev().getText(); - this.nextText = this.node.next().getText(); - this.merge = true; - } else { - this.prevText = this.nextText = null; - this.merge = false; - } - - this.node.detach(); +$.extend(Transaction.prototype, { + pushTransformation: function(transformation) { + this.transformations.push(transformation); }, - undo: function() { - var parent = this.document.getNodeByPath(this.path.slice(0,-1)), - idx = _.last(this.path); - var inserted = parent.insertAtIndex(this.node, idx); - if(this.merge) { - if(inserted.next()) { - inserted.before({text: this.prevText}); - inserted.next().setText(this.nextText); - } else { - inserted.prev().setText(this.prevText); - inserted.after({text: this.nextText}); - } - } + hasTransformations: function() { + return this.transformations.length > 0; } }); -transformations['detach3'] = Detach3NodeTransformation; + return { documentFromXML: function(xml) { - return new Document(xml); + var doc = new Document(xml); + return doc; }, elementNodeFromXML: function(xml) { @@ -822,7 +718,8 @@ return { Document: Document, DocumentNode: DocumentNode, - ElementNode: ElementNode + ElementNode: ElementNode, + TextNode: TextNode }; }); \ No newline at end of file