'use strict';
/* globals Node */
-var TEXT_NODE = Node.TEXT_NODE;
-
-
var DocumentNode = function(nativeNode, document) {
if(!document) {
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;
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) {
this.loadXML(xml);
this.undoStack = [];
this.redoStack = [];
+ this._transactionStack = [];
this._transformationLevel = 0;
this._nodeMethods = {};
this._nodeTransformations = {};
this._textNodeTransformations = {};
this._elementNodeTransformations = {};
+
+ this.registerExtension(coreTransformations);
};
$.extend(Document.prototype, Backbone.Events, {
},
trigger: function() {
- //console.log('trigger: ' + arguments[0] + (arguments[1] ? ', ' + arguments[1].type : ''));
Backbone.Events.trigger.apply(this, arguments);
},
},
registerExtension: function(extension) {
- //debugger;
- var doc = this,
- existingPropertyNames = _.values(this);
+ var doc = this;
['document', 'documentNode', 'elementNode', 'textNode'].forEach(function(dstName) {
var dstExtension = extension[dstName];
},
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 {
}
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;
+ this.undoStack.push(this._transactionStack);
+ this._transactionStack = [];
},
getNodeByPath: function(path) {
return {
documentFromXML: function(xml) {
var doc = new Document(xml);
- doc.registerExtension(coreTransformations);
return doc;
},
fnp / fnpeditor.git / blobdiff