implement "path" method for Node

thoughtbot · Jan 13, 2012 · 4ceb874 · 4ceb874
1 parent 7fe06e9
commit 4ceb874
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diff --git a/lib/capybara/driver/webkit/node.rb b/lib/capybara/driver/webkit/node.rb
@@ -74,7 +74,7 @@ def disabled?
     end
 
     def path
-      raise Capybara::NotSupportedByDriverError
+      invoke "path"
     end
 
     def trigger(event)

diff --git a/src/capybara.js b/src/capybara.js
@@ -56,6 +56,43 @@ Capybara = {
     }
   },
 
+  path: function(index) {
+    return "/" + this.getXPathNode(this.nodes[index]).join("/");
+  },
+
+  getXPathNode: function(node, path) {
+    path = path || [];
+    if(node.parentNode) {
+      path = this.getXPathNode(node.parentNode, path);
+    }
+
+    if(node.previousSibling) {
+      var count = 1;
+      var sibling = node.previousSibling
+      do {
+        if(sibling.nodeType == 1 && sibling.nodeName == node.nodeName) {count++;}
+        sibling = sibling.previousSibling;
+      } while(sibling);
+      if(count == 1) {count = null;}
+    } else if(node.nextSibling) {
+      var sibling = node.nextSibling;
+      do {
+        if(sibling.nodeType == 1 && sibling.nodeName == node.nodeName) {
+          var count = 1;
+          sibling = null;
+        } else {
+          var count = null;
+          sibling = sibling.previousSibling;
+        }
+      } while(sibling);
+    }
+
+    if(node.nodeType == 1) {
+      path.push(node.nodeName.toLowerCase() + (node.id ? "[@id='"+node.id+"']" : count > 0 ? "["+count+"]" : ''));
+    }
+    return path;
+  },
+
   tagName: function(index) {
     return this.nodes[index].tagName.toLowerCase();
   },