smartxml: DocumentNode.replaceWith

diff --git a/src/smartxml/smartxml.js b/src/smartxml/smartxml.js
index 0e05293..01a0a2a 100644 (file)
--- a/src/smartxml/smartxml.js
+++ b/src/smartxml/smartxml.js
@@ -71,6 +71,16 @@ $.extend(DocumentNode.prototype, {
         return this;
     },
 
+    replaceWith: function(node) {
+        var toret;
+        if(this.isRoot()) {
+            return this.document.replaceRoot(node);
+        }
+        toret = this.after(node);
+        this.detach();
+        return toret;
+    },
+
     sameNode: function(otherNode) {
         return otherNode && this.nativeNode === otherNode.nativeNode;
     },
@@ -153,15 +163,7 @@ $.extend(DocumentNode.prototype, {
     },
     
     getNodeInsertion: function(node) {
-        var insertion = {};
-        if(node instanceof DocumentNode) {
-            insertion.ofNode = node;
-            insertion.insertsNew = !this.document.containsNode(node);
-        } else {
-          insertion.ofNode = this.document.createDocumentNode(node);
-          insertion.insertsNew = true;
-        }
-        return insertion;
+        return this.document.getNodeInsertion(node);
     },
 
     getIndex: function() {
@@ -579,6 +581,26 @@ $.extend(Document.prototype, Backbone.Events, {
     trigger: function() {
         //console.log('trigger: ' + arguments[0] + (arguments[1] ? ', ' + arguments[1].type : ''));
         Backbone.Events.trigger.apply(this, arguments);
+    },
+
+    getNodeInsertion: function(node) {
+        var insertion = {};
+        if(node instanceof DocumentNode) {
+            insertion.ofNode = node;
+            insertion.insertsNew = !this.containsNode(node);
+        } else {
+          insertion.ofNode = this.createDocumentNode(node);
+          insertion.insertsNew = true;
+        }
+        return insertion;
+    },
+
+    replaceRoot: function(node) {
+        var insertion = this.getNodeInsertion(node);
+        this.root.detach();
+        defineDocumentProperties(this, insertion.ofNode._$);
+        insertion.ofNode.triggerChangeEvent('nodeAdded');
+        return insertion.ofNode;
     }
 });
 

diff --git a/src/smartxml/smartxml.test.js b/src/smartxml/smartxml.test.js
index 180fa87..cf7ef2a 100644 (file)
--- a/src/smartxml/smartxml.test.js
+++ b/src/smartxml/smartxml.test.js
@@ -304,6 +304,27 @@ describe('smartxml', function() {
 
     describe('Manipulations', function() {
 
+        describe('replacing node with another one', function() {
+            it('replaces node with another one', function() {
+                var doc = getDocumentFromXML('<div><a></a></div>'),
+                    a = doc.root.contents()[0];
+
+                var c = a.replaceWith({tagName: 'b', attrs: {b:'1'}});
+
+                expect(doc.root.contents()[0].sameNode(c));
+                expect(c.getTagName()).to.equal('b');
+                expect(c.getAttr('b')).to.equal('1');
+            });
+            it('can replace document root', function() {
+                var doc = getDocumentFromXML('<div></div>');
+
+                var header = doc.root.replaceWith({tagName: 'header'});
+
+                expect(doc.root.sameNode(header)).to.be.true;
+                expect(doc.containsNode(header)).to.be.true;
+            });
+        });
+
         it('merges adjacent text nodes resulting from detaching an element node in between', function() {
             var doc = getDocumentFromXML('<div>Alice <span>has</span>a cat</div>'),
                 span = doc.root.contents()[1];
@@ -653,6 +674,26 @@ describe('smartxml', function() {
             expect(event.type).to.equal('nodeMoved');
             expect(event.meta.node.sameNode(inserted)).to.be.true;
         });
+
+        it('emits nodeDetached and nodeAdded when replacing root node with another', function() {
+            var doc = getDocumentFromXML('<a></a>'),
+                oldRoot = doc.root,
+                spy = sinon.spy();
+
+            doc.on('change', spy);
+
+            doc.root.replaceWith({tagName: 'b'});
+
+            expect(spy.callCount).to.equal(2);
+
+            var event1 = spy.args[0][0],
+                event2 = spy.args[1][0];
+
+            expect(event1.type).to.equal('nodeDetached');
+            expect(event1.meta.node.sameNode(oldRoot)).to.equal(true, 'root node in nodeDetached event metadata');
+            expect(event2.type).to.equal('nodeAdded');
+            expect(event2.meta.node.sameNode(doc.root)).to.equal(true, 'new root node in nodelAdded event meta');
+        });
     });
 
     describe('Traversing', function() {