X-Git-Url: https://git.mdrn.pl/fnpeditor.git/blobdiff_plain/fcecb8e0ed56cd955b1d2bcbc12e2675f40f0243..5766035cdc88ebe92caab7af494e5e077235d5e0:/src/smartxml/smartxml.js diff --git a/src/smartxml/smartxml.js b/src/smartxml/smartxml.js index d168e6d..c158bac 100644 --- a/src/smartxml/smartxml.js +++ b/src/smartxml/smartxml.js @@ -4,24 +4,36 @@ define([ 'libs/backbone', 'smartxml/events', 'smartxml/transformations', - 'smartxml/core' -], function($, _, Backbone, events, transformations, coreTransformations) { + 'smartxml/core', + 'smartxml/fragments' +], function($, _, Backbone, events, transformations, coreTransformations, fragments) { 'use strict'; /* globals Node */ +var privateKey = '_smartxml'; + 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); @@ -38,7 +50,7 @@ $.extend(DocumentNode.prototype, { clone.find('*').addBack().each(function() { var el = this, clonedData = $(this).data(); - + $(el).removeData(privateKey); _.pairs(clonedData).forEach(function(pair) { var key = pair[0], value = pair[1]; @@ -66,7 +78,7 @@ $.extend(DocumentNode.prototype, { } }); - if(idx !== 'undefined') { + if(idx !== undefined) { nodePath = nodePath.slice(0, idx); } toret = nodePath.map(function(node) {return node.getIndex(); }); @@ -78,6 +90,14 @@ $.extend(DocumentNode.prototype, { return this.document.root.sameNode(this); }, + isInDocument: function() { + return this.document.containsNode(this); + }, + + isSiblingOf: function(node) { + return node && this.parent().sameNode(node.parent()); + }, + sameNode: function(otherNode) { return !!(otherNode) && this.nativeNode === otherNode.nativeNode; }, @@ -113,10 +133,18 @@ $.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(); + }, + + isPrecededByTextNode: function() { + var prev = this.prev(); + return prev && prev.nodeType === Node.TEXT_NODE; + }, + + isFollowedByTextNode: function() { + var next = this.next(); + return next && next.nodeType === Node.TEXT_NODE; }, triggerChangeEvent: function(type, metaData, origParent, nodeWasContained) { @@ -125,7 +153,7 @@ $.extend(DocumentNode.prototype, { if(type === 'nodeDetached' || this.document.containsNode(event.meta.node)) { this.document.trigger('change', event); } - if((type === 'nodeAdded' || type === 'nodeMoved') && !this.document.containsNode(this) && nodeWasContained) { + if(type === 'nodeAdded' && !this.document.containsNode(this) && nodeWasContained) { event = new events.ChangeEvent('nodeDetached', {node: node, parent: origParent}); this.document.trigger('change', event); } @@ -136,28 +164,41 @@ $.extend(DocumentNode.prototype, { }, getIndex: function() { + var parent; + if(this.isRoot()) { return 0; } - return this.parent().indexOf(this); + + parent = this.parent(); + return parent ? parent.indexOf(this) : undefined; + }, + + getNearestElementNode: function() { + return this.nodeType === Node.ELEMENT_NODE ? this : this.parent(); } }); var ElementNode = function(nativeNode, document) { DocumentNode.call(this, nativeNode, document); + $(nativeNode).data(privateKey, {node: this}); }; ElementNode.prototype = Object.create(DocumentNode.prototype); $.extend(ElementNode.prototype, { nodeType: Node.ELEMENT_NODE, - setData: function(key, value) { - if(value !== undefined) { - this._$.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); } }, @@ -165,7 +206,9 @@ $.extend(ElementNode.prototype, { if(key) { return this._$.data(key); } - return this._$.data(); + var toret = _.clone(this._$.data()); + delete toret[privateKey]; + return toret; }, getTagName: function() { @@ -203,6 +246,36 @@ $.extend(ElementNode.prototype, { return toret; }, + containsNode: function(node) { + return node && (node.nativeNode === this.nativeNode || node._$.parents().index(this._$) !== -1); + }, + + getFirstTextNode: function() { + return this._getTextNode('first'); + }, + + getLastTextNode: function() { + return this._getTextNode('last'); + }, + + _getTextNode: function(which) { + var contents = this.contents(), + toret; + if(which === 'last') { + contents = contents.reverse(); + } + contents.some(function(node) { + if(node.nodeType === Node.TEXT_NODE) { + toret = node; + return true; + } + toret = node.getLastTextNode(); + return !!toret; + }); + + return toret; + }, + toXML: function() { var wrapper = $('
'); wrapper.append(this._getXMLDOMToDump()); @@ -217,16 +290,42 @@ $.extend(ElementNode.prototype, { var TextNode = function(nativeNode, document) { DocumentNode.call(this, nativeNode, document); + this._data = Object.create({}); + nativeNode.__smartxmlTextNodeInstance = this; }; TextNode.prototype = Object.create(DocumentNode.prototype); $.extend(TextNode.prototype, { nodeType: Node.TEXT_NODE, + setData: function(arg1, arg2) { + if(arguments.length === 2) { + if(_.isUndefined(arg2)) { + delete this._data[arg1]; + } else { + this._data[arg1] = arg2; + } + } else { + this._data = _.extend({}, arg1); + } + }, + + getData: function(key) { + if(key) { + return this._data[key]; + } + return this._data; + }, + getText: function() { return this.nativeNode.data; }, + + containsNode: function() { + return false; + }, + triggerTextChangeEvent: function() { var event = new events.ChangeEvent('nodeTextChange', {node: this}); this.document.trigger('change', event); @@ -236,7 +335,7 @@ $.extend(TextNode.prototype, { var parseXML = function(xml) { var toret = $($.trim(xml)); - if(!toret.length) { + if(toret.length !== 1) { throw new Error('Unable to parse XML: ' + xml); } return toret[0]; @@ -266,7 +365,7 @@ var registerMethod = function(methodName, method, target) { var Document = function(xml, extensions) { this.undoStack = []; this.redoStack = []; - this._transactionStack = []; + this._currentTransaction = null; this._transformationLevel = 0; this._nodeMethods = {}; @@ -284,12 +383,20 @@ var Document = function(xml, extensions) { 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)) { + var cached; + + if(from instanceof Node) { + /* globals Text */ + cached = from instanceof Text ? from.__smartxmlTextNodeInstance : ($(from).data(privateKey) || {}).node; + if(cached instanceof DocumentNode) { + return cached; + } + } else { if(typeof from === 'string') { from = parseXML(from); this.normalizeXML(from); @@ -354,7 +461,7 @@ $.extend(Document.prototype, Backbone.Events, { }, containsNode: function(node) { - return this.root && (node.nativeNode === this.root.nativeNode || node._$.parents().index(this.root._$) !== -1); + return this.root && this.root.containsNode(node); }, getSiblingParents: function(params) { @@ -366,13 +473,17 @@ $.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; } + if(i === stop) { + i--; + } return {node1: parents1[i], node2: parents2[i]}; }, @@ -441,9 +552,36 @@ $.extend(Document.prototype, Backbone.Events, { }); }, + 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 { + if(documentUnchangedHandler) { + documentUnchangedHandler.call(context); + } + } + }, + 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 { @@ -451,17 +589,20 @@ $.extend(Document.prototype, Backbone.Events, { } if(transformation) { this._transformationLevel++; - 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); + + this.ifChanged( + this, + function() { + toret = transformation.run({beUndoable:this._transformationLevel === 1}); + }, + function() { + if(this._transformationLevel === 1 && !this._undoInProgress) { + this._currentTransaction.pushTransformation(transformation); + this.redoStack = []; + } } - } - if(!this._undoInProgress && this._transformationLevel === 1) { - this.redoStack = []; - } + ); + this._transformationLevel--; return toret; } else { @@ -469,24 +610,18 @@ $.extend(Document.prototype, Backbone.Events, { } }, undo: function() { - var transformationObject = this.undoStack.pop(), + var transaction = this.undoStack.pop(), doc = this, transformations, stopAt; - if(transformationObject) { + if(transaction) { 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]; - } + // 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; @@ -505,45 +640,80 @@ $.extend(Document.prototype, Backbone.Events, { }); this._undoInProgress = false; - this.redoStack.push(transformationObject); + this.redoStack.push(transaction); + this.trigger('operationEnd'); } }, redo: function() { - var transformationObject = this.redoStack.pop(), - transformations; - if(transformationObject) { + var transaction = this.redoStack.pop(); + if(transaction) { this._transformationLevel++; - transformations = _.isArray(transformationObject) ? transformationObject : [transformationObject]; - transformations.forEach(function(t) { + transaction.transformations.forEach(function(t) { t.run({beUndoable: true}); }); this._transformationLevel--; - this.undoStack.push(transformationObject); + this.undoStack.push(transaction); + this.trigger('operationEnd'); + } }, - startTransaction: function() { - if(this._transactionInProgress) { + startTransaction: function(metadata) { + if(this._currentTransaction) { throw new Error('Nested transactions not supported!'); } - this._transactionInProgress = true; + this._rollbackBackup = this.root.clone(); + this._currentTransaction = new Transaction([], metadata); }, endTransaction: function() { - if(!this._transactionInProgress) { + if(!this._currentTransaction) { 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 = []; + 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) { + path.some(function(idx) { toret = toret.contents()[idx]; + if(!toret) { + return true; + } }); return toret; }, @@ -551,11 +721,37 @@ $.extend(Document.prototype, Backbone.Events, { _defineDocumentProperties: function($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 $document[0]; }, configurable: true}); + }, + + createFragment: function(Type, params) { + if(!Type.prototype instanceof fragments.Fragment) { + throw new Error('Can\'t create a fragment: `Type` is not a valid Fragment'); + } + return new Type(this, params); + } +}); + +var Transaction = function(transformations, metadata) { + this.transformations = transformations || []; + this.metadata = metadata; +}; +$.extend(Transaction.prototype, { + pushTransformation: function(transformation) { + this.transformations.push(transformation); + }, + hasTransformations: function() { + return this.transformations.length > 0; } });