X-Git-Url: https://git.mdrn.pl/fnpeditor.git/blobdiff_plain/cd6dc510f609585737898d9c6e74c7df51c00889..5f121e33df901aa33a79b2896e79759da6411948:/src/smartxml/smartxml.js

diff --git a/src/smartxml/smartxml.js b/src/smartxml/smartxml.js
index 013ea9a..c8799f1 100644
--- a/src/smartxml/smartxml.js
+++ b/src/smartxml/smartxml.js
@@ -78,6 +78,10 @@ $.extend(DocumentNode.prototype, {
         return this.document.root.sameNode(this);
     },
 
+    isSiblingOf: function(node) {
+        return node && this.parent().sameNode(node.parent());
+    },
+
     sameNode: function(otherNode) {
         return !!(otherNode) && this.nativeNode === otherNode.nativeNode;
     },
@@ -143,6 +147,10 @@ $.extend(DocumentNode.prototype, {
             return 0;
         }
         return this.parent().indexOf(this);
+    },
+
+    getNearestElementNode: function() {
+        return this.nodeType === Node.ELEMENT_NODE ? this : this.parent();
     }
 });
 
@@ -273,7 +281,7 @@ 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 = {};
@@ -476,6 +484,12 @@ $.extend(Document.prototype, Backbone.Events, {
     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 {
@@ -491,13 +505,7 @@ $.extend(Document.prototype, Backbone.Events, {
                 },
                 function() {
                     if(this._transformationLevel === 1 && !this._undoInProgress) {
-                        if(this._transactionInProgress) {
-                            this._transactionStack.push(transformation);
-                        } else {
-                            this.undoStack.push(new Transaction([transformation]));
-                        }
-                    }
-                    if(!this._undoInProgress && this._transformationLevel === 1) {
+                        this._currentTransaction.pushTransformation(transformation);
                         this.redoStack = [];
                     }
                 }
@@ -542,6 +550,7 @@ $.extend(Document.prototype, Backbone.Events, {
 
             this._undoInProgress = false;
             this.redoStack.push(transaction);
+            this.trigger('operationEnd');
         }
     },
     redo: function() {
@@ -553,32 +562,57 @@ $.extend(Document.prototype, Backbone.Events, {
             });
             this._transformationLevel--;
             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(new Transaction(this._transactionStack));
-            this._transactionStack = [];
+        if(this._currentTransaction.hasTransformations()) {
+            this.undoStack.push(this._currentTransaction);
+            this.trigger('operationEnd');
         }
+        this._currentTransaction = null;
     },
 
-    transaction: function(callback, context) {
+    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;
-        this.startTransaction();
-        toret = callback.call(context);
+        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;
     },
 
@@ -607,9 +641,18 @@ $.extend(Document.prototype, Backbone.Events, {
     }
 });
 
-var Transaction = function(transformations) {
+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 {