[Pkg-javascript-commits] [ltx] 180/469: Element.clone: fixes node-xmpp issue #36

[Jonas Smedegaard]

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commit fd3582a0d0c9c8557aa0d61a90fc90b909b6e162
Author: Astro <astro at spaceboyz.net>
Date:   Fri Oct 28 17:10:16 2011 +0200

    Element.clone: fixes node-xmpp issue #36
---
 lib/element.js       | 19 ++++++++++++++++++-
 test/test_element.js | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 66 insertions(+), 1 deletion(-)

diff --git a/lib/element.js b/lib/element.js
index cd9e8f3..37c2058 100644
--- a/lib/element.js
+++ b/lib/element.js
@@ -131,7 +131,7 @@ Element.prototype.cnode = function(child) {
     return child;
 };
 
-/** create text node and return element */
+/** add text node and return element */
 Element.prototype.t = function(text) {
     this.children.push(text);
     return this;
@@ -164,6 +164,23 @@ Element.prototype.remove = function(el, xmlns) {
     return this;
 };
 
+/**
+ * To use in case you want the same XML data for separate uses.
+ * Please refrain from this practise unless you know what you are
+ * doing. Building XML with ltx is easy!
+ */
+Element.prototype.clone = function() {
+    var clone = new Element(this.name, {});
+    for(var k in this.attrs) {
+	if (this.attrs.hasOwnProperty(k))
+	    clone.attrs[k] = this.attrs[k];
+    }
+    this.children.forEach(function(child) {
+	clone.cnode(child.clone ? child.clone() : child);
+    });
+    return clone;
+};
+
 /*** Serialization ***/
 
 Element.prototype.toString = function() {
diff --git a/test/test_element.js b/test/test_element.js
index 17de103..7f9a059 100644
--- a/test/test_element.js
+++ b/test/test_element.js
@@ -55,5 +55,53 @@ vows.describe('ltx').addBatch({
 	    assert.equal(el.getChildren('c').length, 0);
 	    assert.equal(el.getChildren('c2').length, 1);
 	}
+    },
+
+    'clone': {
+	'clones': function() {
+	    var orig = new ltx.Element('msg', { type: 'get' }).
+		c('content').t('foo').root();
+	    var clone = orig.clone();
+	    assert.equal(clone.name, orig.name);
+	    assert.equal(clone.attrs.type, orig.attrs.type);
+	    assert.equal(clone.attrs.to, orig.attrs.to);
+	    assert.equal(clone.children.length, orig.children.length);
+	    assert.equal(clone.getChildText('content'), orig.getChildText('content'));
+
+	    assert.equal(orig.getChild('content').up(), orig);
+	    assert.equal(clone.getChild('content').up(), clone);
+	},
+	'mod attr': function() {
+	    var orig = new ltx.Element('msg', { type: 'get' });
+	    var clone = orig.clone();
+	    clone.attrs.type += '-result';
+
+	    assert.equal(orig.attrs.type, 'get');
+	    assert.equal(clone.attrs.type, 'get-result');
+	},
+	'rm attr': function() {
+	    var orig = new ltx.Element('msg', { from: 'me' });
+	    var clone = orig.clone();
+	    delete clone.attrs.from;
+	    clone.attrs.to = 'you';
+
+	    assert.equal(orig.attrs.from, 'me');
+	    assert.equal(orig.attrs.to, undefined);
+	    assert.equal(clone.attrs.from, undefined);
+	    assert.equal(clone.attrs.to, 'you');
+	},
+	'mod child': function() {
+	    var orig = new ltx.Element('msg', { type: 'get' }).
+		c('content').t('foo').root();
+	    var clone = orig.clone();
+	    clone.getChild('content').
+		t('bar').
+		name = 'description';
+
+	    assert.equal(orig.children[0].name, 'content');
+	    assert.equal(orig.getChildText('content'), 'foo');
+	    assert.equal(clone.children[0].name, 'description');
+	    assert.equal(clone.getChildText('description'), 'foobar');
+	}
     }
 }).run();

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