X-Git-Url: https://git.mdrn.pl/fnpeditor.git/blobdiff_plain/4ebb1730539288b8198f6db38b0ac9d56b0e521d..82a99e22c8cfc4e50bc15307c818878a261ca1bb:/src/smartxml/smartxml.js diff --git a/src/smartxml/smartxml.js b/src/smartxml/smartxml.js index 60ed6a0..acbe04d 100644 --- a/src/smartxml/smartxml.js +++ b/src/smartxml/smartxml.js @@ -10,9 +10,6 @@ define([ 'use strict'; /* globals Node */ -var TEXT_NODE = Node.TEXT_NODE; - - var DocumentNode = function(nativeNode, document) { if(!document) { @@ -37,17 +34,14 @@ $.extend(DocumentNode.prototype, { clone: function() { var clone = this._$.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); - // } - // }); 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; @@ -228,18 +222,21 @@ $.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 registerTransformation = function(desc, name, target) { var Transformation = transformations.createContextTransformation(desc, name); - //+ to sie powinna nazywac registerTransformationFromDesc or sth - //+ ew. spr czy nie override (tylko jesli powyzej sa prototypy to trudno do nich dojsc) target[name] = function() { var instance = this, args = Array.prototype.slice.call(arguments, 0); return instance.transform(Transformation, args); - } + }; }; var registerMethod = function(methodName, method, target) { @@ -257,6 +254,7 @@ var Document = function(xml) { this.loadXML(xml); this.undoStack = []; this.redoStack = []; + this._transactionStack = []; this._transformationLevel = 0; this._nodeMethods = {}; @@ -265,6 +263,8 @@ var Document = function(xml) { this._nodeTransformations = {}; this._textNodeTransformations = {}; this._elementNodeTransformations = {}; + + this.registerExtension(coreTransformations); }; $.extend(Document.prototype, Backbone.Events, { @@ -273,17 +273,25 @@ $.extend(Document.prototype, Backbone.Events, { 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]); - }); + 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]; + from = node[0]; + } } } var Factory, typeMethods, typeTransformations; @@ -314,11 +322,16 @@ $.extend(Document.prototype, Backbone.Events, { loadXML: function(xml, options) { options = options || {}; this._defineDocumentProperties($(parseXML(xml))); + this.normalizeXML(this.dom); if(!options.silent) { this.trigger('contentSet'); } }, + normalizeXML: function(nativeNode) { + void(nativeNode); // noop + }, + toXML: function() { return this.root.toXML(); }, @@ -347,7 +360,6 @@ $.extend(Document.prototype, Backbone.Events, { }, trigger: function() { - //console.log('trigger: ' + arguments[0] + (arguments[1] ? ', ' + arguments[1].type : '')); Backbone.Events.trigger.apply(this, arguments); }, @@ -386,9 +398,7 @@ $.extend(Document.prototype, Backbone.Events, { }, registerExtension: function(extension) { - //debugger; - var doc = this, - existingPropertyNames = _.values(this); + var doc = this; ['document', 'documentNode', 'elementNode', 'textNode'].forEach(function(dstName) { var dstExtension = extension[dstName]; @@ -415,11 +425,8 @@ $.extend(Document.prototype, Backbone.Events, { }, transform: function(Transformation, args) { - //console.log('transform'); var toret, transformation; - // ref: odrebnie przygotowanie transformacji, odrebnie jej wykonanie (to pierwsze to analog transform z node) - if(typeof Transformation === 'function') { transformation = new Transformation(this, this, args); } else { @@ -427,30 +434,92 @@ $.extend(Document.prototype, Backbone.Events, { } if(transformation) { this._transformationLevel++; - toret = transformation.run(); - if(this._transformationLevel === 1) { - this.undoStack.push(transformation); + toret = transformation.run({beUndoable:this._transformationLevel === 1}); + if(this._transformationLevel === 1 && !this._undoInProgress) { + if(this._transactionInProgress) { + this._transactionStack.push(transformation); + } else { + this.undoStack.push(transformation); + } + } + if(!this._undoInProgress && this._transformationLevel === 1) { + this.redoStack = []; } this._transformationLevel--; - //console.log('clearing redo stack'); - this.redoStack = []; return toret; } else { throw new Error('Transformation ' + transformation + ' doesn\'t exist!'); } }, undo: function() { - var transformation = this.undoStack.pop(); - if(transformation) { - transformation.undo(); - this.redoStack.push(transformation); + var transformationObject = this.undoStack.pop(), + doc = this, + transformations, stopAt; + + if(transformationObject) { + this._undoInProgress = true; + + if(_.isArray(transformationObject)) { + // We will modify this array in a minute so make sure we work on a copy. + transformations = transformationObject.slice(0); + } else { + // Lets normalize single transformation to a transaction containing one transformation. + transformations = [transformationObject]; + } + + 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(transformationObject); } }, redo: function() { - var transformation = this.redoStack.pop(); - if(transformation) { - transformation.run(); - this.undoStack.push(transformation); + var transformationObject = this.redoStack.pop(), + transformations; + if(transformationObject) { + this._transformationLevel++; + transformations = _.isArray(transformationObject) ? transformationObject : [transformationObject]; + transformations.forEach(function(t) { + t.run({beUndoable: true}); + }); + this._transformationLevel--; + this.undoStack.push(transformationObject); + } + }, + + startTransaction: function() { + if(this._transactionInProgress) { + throw new Error('Nested transactions not supported!'); + } + this._transactionInProgress = true; + }, + + endTransaction: function() { + if(!this._transactionInProgress) { + throw new Error('End of transaction requested, but there is no transaction in progress!'); + } + this._transactionInProgress = false; + if(this._transactionStack.length) { + this.undoStack.push(this._transactionStack); + this._transactionStack = []; } }, @@ -477,7 +546,6 @@ $.extend(Document.prototype, Backbone.Events, { return { documentFromXML: function(xml) { var doc = new Document(xml); - doc.registerExtension(coreTransformations); return doc; },