'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 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);
};
$.extend(DocumentNode.prototype, {
+
+ getProperty: function(propName) {
+ var toret = this.object[propName];
+ if(toret && _.isFunction(toret)) {
+ toret = toret.call(this);
+ }
+ return toret;
+ },
+
+ transform: function(Transformation, args) {
+ var transformation = new Transformation(this.document, this, args);
+ return this.document.transform(transformation);
+ },
+
_setNativeNode: function(nativeNode) {
this.nativeNode = nativeNode;
this._$ = $(nativeNode);
},
clone: function() {
- return this.document.createDocumentNode(this._$.clone(true, true)[0]);
+ var clone = this._$.clone(true, true),
+ node = this;
+ clone.find('*').addBack().each(function() {
+ var el = this,
+ clonedData = $(this).data();
+ $(el).removeData(privateKey);
+ _.pairs(clonedData).forEach(function(pair) {
+ var key = pair[0],
+ value = pair[1];
+ if(_.isFunction(value.clone)) {
+ clonedData[key] = value.clone(node.document.createDocumentNode(el));
+ }
+ });
+ });
+ return this.document.createDocumentNode(clone[0]);
},
getPath: function(ancestor) {
+ if(!(this.document.containsNode(this))) {
+ return null;
+ }
+
var nodePath = [this].concat(this.parents()),
toret, idx;
ancestor = ancestor || this.document.root;
}
});
- if(idx !== 'undefined') {
+ if(idx !== undefined) {
nodePath = nodePath.slice(0, idx);
}
toret = nodePath.map(function(node) {return node.getIndex(); });
return this.document.root.sameNode(this);
},
- detach: function() {
- var parent = this.parent();
- this._$.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) {
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);
}
},
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);
$.extend(ElementNode.prototype, {
nodeType: Node.ELEMENT_NODE,
- detach: function() {
- var next;
- if(this.parent() && this.isSurroundedByTextElements()) {
- next = this.next();
- this.prev().appendText(next.getText());
- next.detach();
- }
- return DocumentNode.prototype.detach.call(this);
- },
-
- setData: function(key, value) {
- if(value !== undefined) {
- this._$.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);
}
},
if(key) {
return this._$.data(key);
}
- return this._$.data();
+ var toret = _.clone(this._$.data());
+ delete toret[privateKey];
+ return toret;
},
getTagName: function() {
return this.nativeNode.tagName.toLowerCase();
},
- contents: function() {
+ contents: function(selector) {
var toret = [],
document = this.document;
- this._$.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;
},
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++) {
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();
- }
+ getFirstTextNode: function() {
+ return this._getTextNode('first');
+ },
- var prev = this.prev(),
- next = this.next(),
- moveLeftRange, moveRightRange, leftMerged;
+ getLastTextNode: function() {
+ return this._getTextNode('last');
+ },
- 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;
+ _getTextNode: function(which) {
+ var contents = this.contents(),
+ toret;
+ if(which === 'last') {
+ contents = contents.reverse();
}
-
- 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.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() {
}
});
+
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,
- getText: function() {
- 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}
- });
+ setData: function(arg1, arg2) {
+ if(arguments.length === 2) {
+ if(_.isUndefined(arg2)) {
+ delete this._data[arg1];
+ } else {
+ this._data[arg1] = arg2;
+ }
} else {
- return DocumentNode.prototype.wrapWith.call(this, desc);
+ this._data = _.extend({}, arg1);
}
},
- 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();
+ getData: function(key) {
+ if(key) {
+ return this._data[key];
}
+ return this._data;
+ },
- 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);
+ getText: function() {
+ return this.nativeNode.data;
+ },
- 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() {
var parseXML = function(xml) {
- return $($.trim(xml))[0];
+ var toret = $($.trim(xml));
+ if(toret.length !== 1) {
+ throw new Error('Unable to parse XML: ' + xml);
+ }
+ return toret[0];
+
+};
+
+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) {
+
+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);
- } else {
- var node = $('<' + from.tagName + '>');
-
- _.keys(from.attrs || {}).forEach(function(key) {
- node.attr(key, from.attrs[key]);
- });
+ var cached;
- from = node[0];
+ if(from instanceof Node) {
+ /* globals Text */
+ cached = from instanceof Text ? from.__smartxmlTextNodeInstance : ($(from).data(privateKey) || {}).node;
+ if(cached instanceof DocumentNode) {
+ return cached;
+ }
+ } else {
+ if(typeof from === 'string') {
+ from = parseXML(from);
+ this.normalizeXML(from);
+ } else {
+ 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) {
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];
- }
-
- 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});
+ if(i === stop) {
+ i--;
}
- 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);
},
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);
+ });
+ }
+ }
+ });
+ },
+
+ 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 {
+ transformation = Transformation;
+ }
+ if(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.
+ 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 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.some(function(idx) {
+ toret = toret.contents()[idx];
+ if(!toret) {
+ return true;
+ }
+ });
+ return toret;
+ },
+
+ _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 defineDocumentProperties = function(doc, $document) {
- Object.defineProperty(doc, 'root', {get: function() {
- return doc.createDocumentNode($document[0]);
- }, configurable: true});
- Object.defineProperty(doc, 'dom', {get: function() {
- return $document[0];
- }, configurable: true});
+var Transaction = function(transformations, metadata) {
+ this.transformations = transformations || [];
+ this.metadata = metadata;
};
+$.extend(Transaction.prototype, {
+ pushTransformation: function(transformation) {
+ this.transformations.push(transformation);
+ },
+ hasTransformations: function() {
+ return this.transformations.length > 0;
+ }
+});
+
return {
documentFromXML: function(xml) {
- return new Document(xml);
+ var doc = new Document(xml);
+ return doc;
},
elementNodeFromXML: function(xml) {
Document: Document,
DocumentNode: DocumentNode,
- ElementNode: ElementNode
+ ElementNode: ElementNode,
+ TextNode: TextNode
};
});
\ No newline at end of file
fnp / fnpeditor.git / blobdiff