},
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]);
},
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 Document = function(xml) {
- this.loadXML(xml);
+var Document = function(xml, extensions) {
this.undoStack = [];
this.redoStack = [];
+ this._transactionStack = [];
this._transformationLevel = 0;
this._nodeMethods = {};
this._elementNodeTransformations = {};
this.registerExtension(coreTransformations);
+
+ (extensions || []).forEach(function(extension) {
+ this.registerExtension(extension);
+ }.bind(this));
+ this.loadXML(xml);
};
$.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 = $('<' + from.tagName + '>');
+
+ _.keys(from.attrs || {}).forEach(function(key) {
+ node.attr(key, from.attrs[key]);
+ });
- from = node[0];
+ from = node[0];
+ }
}
}
var Factory, typeMethods, typeTransformations;
loadXML: function(xml, options) {
options = options || {};
this._defineDocumentProperties($(parseXML(xml)));
+ this.normalizeXML(this.dom);
if(!options.silent) {
this.trigger('contentSet');
}
},
+ normalizeXML: function(nativeNode) {
+ void(nativeNode); // noop
+ },
+
toXML: function() {
return this.root.toXML();
},
});
},
+ 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(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) {
+ if(this._transactionInProgress) {
+ this._transactionStack.push(transformation);
+ } else {
+ this.undoStack.push(transformation);
+ }
+ }
+ if(!this._undoInProgress && this._transformationLevel === 1) {
+ 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 transformationObject = this.undoStack.pop(),
+ doc = this,
+ transformations, stopAt;
+
+ if(transformationObject) {
this._undoInProgress = true;
- transformation.undo();
+
+ 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(transformation);
+ this.redoStack.push(transformationObject);
}
},
redo: function() {
- var transformation = this.redoStack.pop();
- if(transformation) {
+ var transformationObject = this.redoStack.pop(),
+ transformations;
+ if(transformationObject) {
this._transformationLevel++;
- transformation.run({beUndoable: true});
+ transformations = _.isArray(transformationObject) ? transformationObject : [transformationObject];
+ transformations.forEach(function(t) {
+ t.run({beUndoable: true});
+ });
this._transformationLevel--;
- this.undoStack.push(transformation);
+ 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 = [];
}
},
fnp / fnpeditor.git / blobdiff