X-Git-Url: https://git.mdrn.pl/fnpeditor.git/blobdiff_plain/21cd91531dd9c6e88d00da03f6b2f3ad88fb0da0..2e65999ad3791878b245ead3d0fa8442d74fd1b2:/src/smartxml/smartxml.js diff --git a/src/smartxml/smartxml.js b/src/smartxml/smartxml.js index 9c233bd..8039916 100644 --- a/src/smartxml/smartxml.js +++ b/src/smartxml/smartxml.js @@ -4,8 +4,9 @@ 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 */ @@ -16,12 +17,21 @@ var DocumentNode = function(nativeNode, 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); @@ -33,7 +43,20 @@ $.extend(DocumentNode.prototype, { }, clone: function() { - var clone = this._$.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]); }, @@ -53,7 +76,7 @@ $.extend(DocumentNode.prototype, { } }); - if(idx !== 'undefined') { + if(idx !== undefined) { nodePath = nodePath.slice(0, idx); } toret = nodePath.map(function(node) {return node.getIndex(); }); @@ -65,6 +88,14 @@ $.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; }, @@ -100,10 +131,18 @@ $.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) { @@ -112,7 +151,7 @@ $.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); } @@ -127,6 +166,10 @@ $.extend(DocumentNode.prototype, { return 0; } return this.parent().indexOf(this); + }, + + getNearestElementNode: function() { + return this.nodeType === Node.ELEMENT_NODE ? this : this.parent(); } }); @@ -139,12 +182,16 @@ 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); } }, @@ -190,6 +237,26 @@ $.extend(ElementNode.prototype, { return toret; }, + containsNode: function(node) { + return node && (node.nativeNode === this.nativeNode || node._$.parents().index(this._$) !== -1); + }, + + getLastTextNode: function() { + var contents = this.contents(), + toret; + + contents.reverse().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()); @@ -214,6 +281,11 @@ $.extend(TextNode.prototype, { return this.nativeNode.data; }, + + containsNode: function() { + return false; + }, + triggerTextChangeEvent: function() { var event = new events.ChangeEvent('nodeTextChange', {node: this}); this.document.trigger('change', event); @@ -222,7 +294,12 @@ $.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) { @@ -245,10 +322,10 @@ var registerMethod = function(methodName, method, target) { }; -var Document = function(xml) { - this.loadXML(xml); +var Document = function(xml, extensions) { this.undoStack = []; this.redoStack = []; + this._currentTransaction = null; this._transformationLevel = 0; this._nodeMethods = {}; @@ -259,25 +336,38 @@ var Document = function(xml) { 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]); - }); + 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; @@ -308,17 +398,22 @@ $.extend(Document.prototype, Backbone.Events, { loadXML: function(xml, options) { options = options || {}; this._defineDocumentProperties($(parseXML(xml))); + this.normalizeXML(this.dom); if(!options.silent) { this.trigger('contentSet'); } }, + normalizeXML: function(nativeNode) { + void(nativeNode); // noop + }, + toXML: function() { return this.root.toXML(); }, 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) { @@ -330,13 +425,17 @@ $.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]}; }, @@ -405,9 +504,36 @@ $.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 { @@ -415,39 +541,125 @@ $.extend(Document.prototype, Backbone.Events, { } if(transformation) { this._transformationLevel++; - toret = transformation.run({beUndoable:this._transformationLevel === 1}); - if(this._transformationLevel === 1 && !this._undoInProgress) { - 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 = []; + } + } + ); + this._transformationLevel--; - if(!this._undoInProgress) { - this.redoStack = []; - } return toret; } else { throw new Error('Transformation ' + transformation + ' doesn\'t exist!'); } }, undo: function() { - var transformation = this.undoStack.pop(); - if(transformation) { + var transaction = this.undoStack.pop(), + doc = this, + transformations, stopAt; + + if(transaction) { this._undoInProgress = true; - transformation.undo(); + + // 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(transformation); + this.redoStack.push(transaction); + this.trigger('operationEnd'); } }, redo: function() { - var transformation = this.redoStack.pop(); - if(transformation) { + var transaction = this.redoStack.pop(); + if(transaction) { this._transformationLevel++; - transformation.run({beUndoable: true}); + transaction.transformations.forEach(function(t) { + t.run({beUndoable: true}); + }); this._transformationLevel--; - this.undoStack.push(transformation); + 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) { @@ -459,11 +671,37 @@ $.extend(Document.prototype, Backbone.Events, { _defineDocumentProperties: function($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; } });