Touched the files auto-generatedb y the IDL. Also implemented getElementByAttribute

for documents and for elements.

content/xul/content/src/nsXULElement.cpp

@@ -225,11 +225,7 @@ public:
     virtual void   Finalize(JSContext *aContext);
 
     // nsIDOMXULElement
-    NS_IMETHOD DoCommand();
-
-    NS_IMETHOD AddBroadcastListener(const nsString& attr, nsIDOMNode* aNode);
-    NS_IMETHOD RemoveBroadcastListener(const nsString& attr, nsIDOMNode* aNode);
-
+    NS_DECL_IDOMXULELEMENT
 
     // Implementation methods
     nsresult GetResource(nsIRDFResource** aResource);
@@ -242,6 +238,11 @@ public:
                          const nsString& aTagName,
                          nsRDFDOMNodeList* aElements);
 
+    static nsresult
+    GetElementsByAttribute(nsIDOMNode* aNode,
+                           const nsString& aAttributeName,
+                           const nsString& aAttributeValue,
+                           nsRDFDOMNodeList* aElements);
 
 private:
     // pseudo-constants
@@ -836,6 +837,28 @@ RDFElementImpl::GetElementsByTagName(const nsString& aName, nsIDOMNodeList** aRe
     return NS_OK;
 }
 
+NS_IMETHODIMP
+RDFElementImpl::GetElementsByAttribute(const nsString& aAttribute,
+                                       const nsString& aValue,
+                                       nsIDOMNodeList** aReturn)
+{
+    nsresult rv;
+    nsRDFDOMNodeList* elements;
+    if (NS_FAILED(rv = nsRDFDOMNodeList::Create(&elements))) {
+        NS_ERROR("unable to create node list");
+        return rv;
+    }
+
+    nsIDOMNode* domElement;
+    if (NS_SUCCEEDED(rv = QueryInterface(nsIDOMNode::IID(), (void**) &domElement))) {
+        rv = GetElementsByAttribute(domElement, aAttribute, aValue, elements);
+        NS_RELEASE(domElement);
+    }
+
+    *aReturn = elements;
+    return NS_OK;
+}
+
 
 NS_IMETHODIMP
 RDFElementImpl::Normalize()
@@ -2048,3 +2071,72 @@ RDFElementImpl::GetElementsByTagName(nsIDOMNode* aNode,
 
     return NS_OK;
 }
+
+nsresult
+RDFElementImpl::GetElementsByAttribute(nsIDOMNode* aNode,
+                                       const nsString& aAttribute,
+                                       const nsString& aValue,
+                                       nsRDFDOMNodeList* aElements)
+{
+    nsresult rv;
+
+    nsCOMPtr<nsIDOMNodeList> children;
+    if (NS_FAILED(rv = aNode->GetChildNodes( getter_AddRefs(children) ))) {
+        NS_ERROR("unable to get node's children");
+        return rv;
+    }
+
+    // no kids: terminate the recursion
+    if (! children)
+        return NS_OK;
+
+    PRUint32 length;
+    if (NS_FAILED(children->GetLength(&length))) {
+        NS_ERROR("unable to get node list's length");
+        return rv;
+    }
+
+    for (PRUint32 i = 0; i < length; ++i) {
+        nsCOMPtr<nsIDOMNode> child;
+        if (NS_FAILED(rv = children->Item(i, getter_AddRefs(child) ))) {
+            NS_ERROR("unable to get child from list");
+            return rv;
+        }
+
+        nsAutoString name;
+        nsCOMPtr<nsIContent> pContent;
+        pContent = do_QueryInterface(child);
+        
+        PRInt32 namespaceID;
+        pContent->GetNameSpaceID(namespaceID);
+        
+        nsIAtom* pAtom = NS_NewAtom(aAttribute);
+
+        nsString actualValue;
+
+        if (!pContent)
+          return rv;
+        
+        rv = pContent->GetAttribute(namespaceID, pAtom, actualValue);
+        
+        NS_IF_RELEASE(pAtom);
+
+        if (((rv == NS_CONTENT_ATTR_NO_VALUE || rv == NS_CONTENT_ATTR_HAS_VALUE) && aValue == "*") ||
+            (rv == NS_CONTENT_ATTR_HAS_VALUE && actualValue == aValue))
+        {
+            if (NS_FAILED(rv = aElements->AppendNode(child))) {
+                NS_ERROR("unable to append element to node list");
+                return rv;
+            }
+        }
+       
+        // Now recursively look for children
+        if (NS_FAILED(rv = GetElementsByAttribute(child, aAttribute, aValue, aElements))) {
+            NS_ERROR("unable to recursively get elements by attribute");
+            return rv;
+        }
+    }
+
+    return NS_OK;
+}
+

content/xul/document/src/nsXULDocument.cpp

@@ -548,6 +548,12 @@ public:
                          const nsString& aTagName,
                          nsRDFDOMNodeList* aElements);
 
+    static nsresult
+    GetElementsByAttribute(nsIDOMNode* aNode,
+                           const nsString& aAttribute,
+                           const nsString& aValue,
+                           nsRDFDOMNodeList* aElements);
+
 protected:
     nsIContent*
     FindContent(const nsIContent* aStartNode,
@@ -2060,6 +2066,33 @@ XULDocumentImpl::GetElementsByTagName(const nsString& aTagName, nsIDOMNodeList**
     return NS_OK;
 }
 
+NS_IMETHODIMP
+XULDocumentImpl::GetElementsByAttribute(const nsString& aAttribute, const nsString& aValue, 
+                                        nsIDOMNodeList** aReturn)
+{
+    nsresult rv;
+    nsRDFDOMNodeList* elements;
+    if (NS_FAILED(rv = nsRDFDOMNodeList::Create(&elements))) {
+        NS_ERROR("unable to create node list");
+        return rv;
+    }
+
+    nsIContent* root = GetRootContent();
+    NS_ASSERTION(root != nsnull, "no doc root");
+
+    if (root != nsnull) {
+        nsIDOMNode* domRoot;
+        if (NS_SUCCEEDED(rv = root->QueryInterface(nsIDOMNode::IID(), (void**) &domRoot))) {
+            rv = GetElementsByAttribute(domRoot, aAttribute, aValue, elements);
+            NS_RELEASE(domRoot);
+        }
+        NS_RELEASE(root);
+    }
+
+    *aReturn = elements;
+    return NS_OK;
+}
+
 
 NS_IMETHODIMP
 XULDocumentImpl::GetStyleSheets(nsIDOMStyleSheetCollection** aStyleSheets)
@@ -2865,5 +2898,69 @@ XULDocumentImpl::GetElementsByTagName(nsIDOMNode* aNode,
     return NS_OK;
 }
 
+nsresult
+XULDocumentImpl::GetElementsByAttribute(nsIDOMNode* aNode,
+                                      const nsString& aAttribute,
+                                      const nsString& aValue,
+                                      nsRDFDOMNodeList* aElements)
+{
+    nsresult rv;
+
+    nsAutoString name;
+    nsCOMPtr<nsIContent> pContent;
+    pContent = do_QueryInterface(aNode);
+    
+    PRInt32 namespaceID;
+    pContent->GetNameSpaceID(namespaceID);
+    
+    nsIAtom* pAtom = NS_NewAtom(aAttribute);
+
+    nsString actualValue;
+
+    rv = pContent->GetAttribute(namespaceID, pAtom, actualValue);
+    
+    NS_IF_RELEASE(pAtom);
+
+    if (((rv == NS_CONTENT_ATTR_NO_VALUE || rv == NS_CONTENT_ATTR_HAS_VALUE) && aValue == "*") ||
+        (rv == NS_CONTENT_ATTR_HAS_VALUE && actualValue == aValue))
+    {
+        if (NS_FAILED(rv = aElements->AppendNode(aNode))) {
+            NS_ERROR("unable to append element to node list");
+            return rv;
+        }
+    }
+
+    nsCOMPtr<nsIDOMNodeList> children;
+    if (NS_FAILED(rv = aNode->GetChildNodes( getter_AddRefs(children) ))) {
+        NS_ERROR("unable to get node's children");
+        return rv;
+    }
+
+    // no kids: terminate the recursion
+    if (! children)
+        return NS_OK;
+
+    PRUint32 length;
+    if (NS_FAILED(children->GetLength(&length))) {
+        NS_ERROR("unable to get node list's length");
+        return rv;
+    }
+
+    for (PRUint32 i = 0; i < length; ++i) {
+        nsCOMPtr<nsIDOMNode> child;
+        if (NS_FAILED(rv = children->Item(i, getter_AddRefs(child) ))) {
+            NS_ERROR("unable to get child from list");
+            return rv;
+        }
+
+        if (NS_FAILED(rv = GetElementsByAttribute(child, aAttribute, aValue, aElements))) {
+            NS_ERROR("unable to recursively get elements by attribute");
+            return rv;
+        }
+    }
+
+    return NS_OK;
+}
+
 
 

dom/src/xul/nsJSXULDocument.cpp

@@ -28,6 +28,7 @@
 #include "nsString.h"
 #include "nsIDOMNode.h"
 #include "nsIDOMXULDocument.h"
+#include "nsIDOMNodeList.h"
 
 
 static NS_DEFINE_IID(kIScriptObjectOwnerIID, NS_ISCRIPTOBJECTOWNER_IID);
@@ -35,9 +36,11 @@ static NS_DEFINE_IID(kIJSScriptObjectIID, NS_IJSSCRIPTOBJECT_IID);
 static NS_DEFINE_IID(kIScriptGlobalObjectIID, NS_ISCRIPTGLOBALOBJECT_IID);
 static NS_DEFINE_IID(kINodeIID, NS_IDOMNODE_IID);
 static NS_DEFINE_IID(kIXULDocumentIID, NS_IDOMXULDOCUMENT_IID);
+static NS_DEFINE_IID(kINodeListIID, NS_IDOMNODELIST_IID);
 
 NS_DEF_PTR(nsIDOMNode);
 NS_DEF_PTR(nsIDOMXULDocument);
+NS_DEF_PTR(nsIDOMNodeList);
 
 
 /***********************************************************************/
@@ -164,6 +167,46 @@ XULDocumentGetElementByID(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
 }
 
 
+//
+// Native method GetElementsByAttribute
+//
+PR_STATIC_CALLBACK(JSBool)
+XULDocumentGetElementsByAttribute(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+{
+  nsIDOMXULDocument *nativeThis = (nsIDOMXULDocument*)JS_GetPrivate(cx, obj);
+  JSBool rBool = JS_FALSE;
+  nsIDOMNodeList* nativeRet;
+  nsAutoString b0;
+  nsAutoString b1;
+
+  *rval = JSVAL_NULL;
+
+  // If there's no private data, this must be the prototype, so ignore
+  if (nsnull == nativeThis) {
+    return JS_TRUE;
+  }
+
+  if (argc >= 2) {
+
+    nsJSUtils::nsConvertJSValToString(b0, cx, argv[0]);
+
+    nsJSUtils::nsConvertJSValToString(b1, cx, argv[1]);
+
+    if (NS_OK != nativeThis->GetElementsByAttribute(b0, b1, &nativeRet)) {
+      return JS_FALSE;
+    }
+
+    nsJSUtils::nsConvertObjectToJSVal(nativeRet, cx, rval);
+  }
+  else {
+    JS_ReportError(cx, "Function getElementsByAttribute requires 2 parameters");
+    return JS_FALSE;
+  }
+
+  return JS_TRUE;
+}
+
+
 /***********************************************************************/
 //
 // class for XULDocument
@@ -197,6 +240,7 @@ static JSPropertySpec XULDocumentProperties[] =
 static JSFunctionSpec XULDocumentMethods[] = 
 {
   {"getElementByID",          XULDocumentGetElementByID,     1},
+  {"getElementsByAttribute",          XULDocumentGetElementsByAttribute,     2},
   {0}
 };
 

dom/src/xul/nsJSXULElement.cpp

@@ -28,6 +28,7 @@
 #include "nsString.h"
 #include "nsIDOMXULElement.h"
 #include "nsIDOMNode.h"
+#include "nsIDOMNodeList.h"
 
 
 static NS_DEFINE_IID(kIScriptObjectOwnerIID, NS_ISCRIPTOBJECTOWNER_IID);
@@ -35,9 +36,11 @@ static NS_DEFINE_IID(kIJSScriptObjectIID, NS_IJSSCRIPTOBJECT_IID);
 static NS_DEFINE_IID(kIScriptGlobalObjectIID, NS_ISCRIPTGLOBALOBJECT_IID);
 static NS_DEFINE_IID(kIXULElementIID, NS_IDOMXULELEMENT_IID);
 static NS_DEFINE_IID(kINodeIID, NS_IDOMNODE_IID);
+static NS_DEFINE_IID(kINodeListIID, NS_IDOMNODELIST_IID);
 
 NS_DEF_PTR(nsIDOMXULElement);
 NS_DEF_PTR(nsIDOMNode);
+NS_DEF_PTR(nsIDOMNodeList);
 
 
 /***********************************************************************/
@@ -250,6 +253,46 @@ XULElementDoCommand(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval
 }
 
 
+//
+// Native method GetElementsByAttribute
+//
+PR_STATIC_CALLBACK(JSBool)
+XULElementGetElementsByAttribute(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+{
+  nsIDOMXULElement *nativeThis = (nsIDOMXULElement*)JS_GetPrivate(cx, obj);
+  JSBool rBool = JS_FALSE;
+  nsIDOMNodeList* nativeRet;
+  nsAutoString b0;
+  nsAutoString b1;
+
+  *rval = JSVAL_NULL;
+
+  // If there's no private data, this must be the prototype, so ignore
+  if (nsnull == nativeThis) {
+    return JS_TRUE;
+  }
+
+  if (argc >= 2) {
+
+    nsJSUtils::nsConvertJSValToString(b0, cx, argv[0]);
+
+    nsJSUtils::nsConvertJSValToString(b1, cx, argv[1]);
+
+    if (NS_OK != nativeThis->GetElementsByAttribute(b0, b1, &nativeRet)) {
+      return JS_FALSE;
+    }
+
+    nsJSUtils::nsConvertObjectToJSVal(nativeRet, cx, rval);
+  }
+  else {
+    JS_ReportError(cx, "Function getElementsByAttribute requires 2 parameters");
+    return JS_FALSE;
+  }
+
+  return JS_TRUE;
+}
+
+
 /***********************************************************************/
 //
 // class for XULElement
@@ -285,6 +328,7 @@ static JSFunctionSpec XULElementMethods[] =
   {"addBroadcastListener",          XULElementAddBroadcastListener,     2},
   {"removeBroadcastListener",          XULElementRemoveBroadcastListener,     2},
   {"doCommand",          XULElementDoCommand,     0},
+  {"getElementsByAttribute",          XULElementGetElementsByAttribute,     2},
   {0}
 };
 

rdf/content/src/nsJSXULDocument.cpp

@@ -28,6 +28,7 @@
 #include "nsString.h"
 #include "nsIDOMNode.h"
 #include "nsIDOMXULDocument.h"
+#include "nsIDOMNodeList.h"
 
 
 static NS_DEFINE_IID(kIScriptObjectOwnerIID, NS_ISCRIPTOBJECTOWNER_IID);
@@ -35,9 +36,11 @@ static NS_DEFINE_IID(kIJSScriptObjectIID, NS_IJSSCRIPTOBJECT_IID);
 static NS_DEFINE_IID(kIScriptGlobalObjectIID, NS_ISCRIPTGLOBALOBJECT_IID);
 static NS_DEFINE_IID(kINodeIID, NS_IDOMNODE_IID);
 static NS_DEFINE_IID(kIXULDocumentIID, NS_IDOMXULDOCUMENT_IID);
+static NS_DEFINE_IID(kINodeListIID, NS_IDOMNODELIST_IID);
 
 NS_DEF_PTR(nsIDOMNode);
 NS_DEF_PTR(nsIDOMXULDocument);
+NS_DEF_PTR(nsIDOMNodeList);
 
 
 /***********************************************************************/
@@ -164,6 +167,46 @@ XULDocumentGetElementByID(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
 }
 
 
+//
+// Native method GetElementsByAttribute
+//
+PR_STATIC_CALLBACK(JSBool)
+XULDocumentGetElementsByAttribute(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+{
+  nsIDOMXULDocument *nativeThis = (nsIDOMXULDocument*)JS_GetPrivate(cx, obj);
+  JSBool rBool = JS_FALSE;
+  nsIDOMNodeList* nativeRet;
+  nsAutoString b0;
+  nsAutoString b1;
+
+  *rval = JSVAL_NULL;
+
+  // If there's no private data, this must be the prototype, so ignore
+  if (nsnull == nativeThis) {
+    return JS_TRUE;
+  }
+
+  if (argc >= 2) {
+
+    nsJSUtils::nsConvertJSValToString(b0, cx, argv[0]);
+
+    nsJSUtils::nsConvertJSValToString(b1, cx, argv[1]);
+
+    if (NS_OK != nativeThis->GetElementsByAttribute(b0, b1, &nativeRet)) {
+      return JS_FALSE;
+    }
+
+    nsJSUtils::nsConvertObjectToJSVal(nativeRet, cx, rval);
+  }
+  else {
+    JS_ReportError(cx, "Function getElementsByAttribute requires 2 parameters");
+    return JS_FALSE;
+  }
+
+  return JS_TRUE;
+}
+
+
 /***********************************************************************/
 //
 // class for XULDocument
@@ -197,6 +240,7 @@ static JSPropertySpec XULDocumentProperties[] =
 static JSFunctionSpec XULDocumentMethods[] = 
 {
   {"getElementByID",          XULDocumentGetElementByID,     1},
+  {"getElementsByAttribute",          XULDocumentGetElementsByAttribute,     2},
   {0}
 };
 

rdf/content/src/nsJSXULElement.cpp

@@ -28,6 +28,7 @@
 #include "nsString.h"
 #include "nsIDOMXULElement.h"
 #include "nsIDOMNode.h"
+#include "nsIDOMNodeList.h"
 
 
 static NS_DEFINE_IID(kIScriptObjectOwnerIID, NS_ISCRIPTOBJECTOWNER_IID);
@@ -35,9 +36,11 @@ static NS_DEFINE_IID(kIJSScriptObjectIID, NS_IJSSCRIPTOBJECT_IID);
 static NS_DEFINE_IID(kIScriptGlobalObjectIID, NS_ISCRIPTGLOBALOBJECT_IID);
 static NS_DEFINE_IID(kIXULElementIID, NS_IDOMXULELEMENT_IID);
 static NS_DEFINE_IID(kINodeIID, NS_IDOMNODE_IID);
+static NS_DEFINE_IID(kINodeListIID, NS_IDOMNODELIST_IID);
 
 NS_DEF_PTR(nsIDOMXULElement);
 NS_DEF_PTR(nsIDOMNode);
+NS_DEF_PTR(nsIDOMNodeList);
 
 
 /***********************************************************************/
@@ -250,6 +253,46 @@ XULElementDoCommand(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval
 }
 
 
+//
+// Native method GetElementsByAttribute
+//
+PR_STATIC_CALLBACK(JSBool)
+XULElementGetElementsByAttribute(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
+{
+  nsIDOMXULElement *nativeThis = (nsIDOMXULElement*)JS_GetPrivate(cx, obj);
+  JSBool rBool = JS_FALSE;
+  nsIDOMNodeList* nativeRet;
+  nsAutoString b0;
+  nsAutoString b1;
+
+  *rval = JSVAL_NULL;
+
+  // If there's no private data, this must be the prototype, so ignore
+  if (nsnull == nativeThis) {
+    return JS_TRUE;
+  }
+
+  if (argc >= 2) {
+
+    nsJSUtils::nsConvertJSValToString(b0, cx, argv[0]);
+
+    nsJSUtils::nsConvertJSValToString(b1, cx, argv[1]);
+
+    if (NS_OK != nativeThis->GetElementsByAttribute(b0, b1, &nativeRet)) {
+      return JS_FALSE;
+    }
+
+    nsJSUtils::nsConvertObjectToJSVal(nativeRet, cx, rval);
+  }
+  else {
+    JS_ReportError(cx, "Function getElementsByAttribute requires 2 parameters");
+    return JS_FALSE;
+  }
+
+  return JS_TRUE;
+}
+
+
 /***********************************************************************/
 //
 // class for XULElement
@@ -285,6 +328,7 @@ static JSFunctionSpec XULElementMethods[] =
   {"addBroadcastListener",          XULElementAddBroadcastListener,     2},
   {"removeBroadcastListener",          XULElementRemoveBroadcastListener,     2},
   {"doCommand",          XULElementDoCommand,     0},
+  {"getElementsByAttribute",          XULElementGetElementsByAttribute,     2},
   {0}
 };
 

rdf/content/src/nsRDFElement.cpp

@@ -225,11 +225,7 @@ public:
     virtual void   Finalize(JSContext *aContext);
 
     // nsIDOMXULElement
-    NS_IMETHOD DoCommand();
-
-    NS_IMETHOD AddBroadcastListener(const nsString& attr, nsIDOMNode* aNode);
-    NS_IMETHOD RemoveBroadcastListener(const nsString& attr, nsIDOMNode* aNode);
-
+    NS_DECL_IDOMXULELEMENT
 
     // Implementation methods
     nsresult GetResource(nsIRDFResource** aResource);
@@ -242,6 +238,11 @@ public:
                          const nsString& aTagName,
                          nsRDFDOMNodeList* aElements);
 
+    static nsresult
+    GetElementsByAttribute(nsIDOMNode* aNode,
+                           const nsString& aAttributeName,
+                           const nsString& aAttributeValue,
+                           nsRDFDOMNodeList* aElements);
 
 private:
     // pseudo-constants
@@ -836,6 +837,28 @@ RDFElementImpl::GetElementsByTagName(const nsString& aName, nsIDOMNodeList** aRe
     return NS_OK;
 }
 
+NS_IMETHODIMP
+RDFElementImpl::GetElementsByAttribute(const nsString& aAttribute,
+                                       const nsString& aValue,
+                                       nsIDOMNodeList** aReturn)
+{
+    nsresult rv;
+    nsRDFDOMNodeList* elements;
+    if (NS_FAILED(rv = nsRDFDOMNodeList::Create(&elements))) {
+        NS_ERROR("unable to create node list");
+        return rv;
+    }
+
+    nsIDOMNode* domElement;
+    if (NS_SUCCEEDED(rv = QueryInterface(nsIDOMNode::IID(), (void**) &domElement))) {
+        rv = GetElementsByAttribute(domElement, aAttribute, aValue, elements);
+        NS_RELEASE(domElement);
+    }
+
+    *aReturn = elements;
+    return NS_OK;
+}
+
 
 NS_IMETHODIMP
 RDFElementImpl::Normalize()
@@ -2048,3 +2071,72 @@ RDFElementImpl::GetElementsByTagName(nsIDOMNode* aNode,
 
     return NS_OK;
 }
+
+nsresult
+RDFElementImpl::GetElementsByAttribute(nsIDOMNode* aNode,
+                                       const nsString& aAttribute,
+                                       const nsString& aValue,
+                                       nsRDFDOMNodeList* aElements)
+{
+    nsresult rv;
+
+    nsCOMPtr<nsIDOMNodeList> children;
+    if (NS_FAILED(rv = aNode->GetChildNodes( getter_AddRefs(children) ))) {
+        NS_ERROR("unable to get node's children");
+        return rv;
+    }
+
+    // no kids: terminate the recursion
+    if (! children)
+        return NS_OK;
+
+    PRUint32 length;
+    if (NS_FAILED(children->GetLength(&length))) {
+        NS_ERROR("unable to get node list's length");
+        return rv;
+    }
+
+    for (PRUint32 i = 0; i < length; ++i) {
+        nsCOMPtr<nsIDOMNode> child;
+        if (NS_FAILED(rv = children->Item(i, getter_AddRefs(child) ))) {
+            NS_ERROR("unable to get child from list");
+            return rv;
+        }
+
+        nsAutoString name;
+        nsCOMPtr<nsIContent> pContent;
+        pContent = do_QueryInterface(child);
+        
+        PRInt32 namespaceID;
+        pContent->GetNameSpaceID(namespaceID);
+        
+        nsIAtom* pAtom = NS_NewAtom(aAttribute);
+
+        nsString actualValue;
+
+        if (!pContent)
+          return rv;
+        
+        rv = pContent->GetAttribute(namespaceID, pAtom, actualValue);
+        
+        NS_IF_RELEASE(pAtom);
+
+        if (((rv == NS_CONTENT_ATTR_NO_VALUE || rv == NS_CONTENT_ATTR_HAS_VALUE) && aValue == "*") ||
+            (rv == NS_CONTENT_ATTR_HAS_VALUE && actualValue == aValue))
+        {
+            if (NS_FAILED(rv = aElements->AppendNode(child))) {
+                NS_ERROR("unable to append element to node list");
+                return rv;
+            }
+        }
+       
+        // Now recursively look for children
+        if (NS_FAILED(rv = GetElementsByAttribute(child, aAttribute, aValue, aElements))) {
+            NS_ERROR("unable to recursively get elements by attribute");
+            return rv;
+        }
+    }
+
+    return NS_OK;
+}
+

rdf/content/src/nsXULDocument.cpp

@@ -548,6 +548,12 @@ public:
                          const nsString& aTagName,
                          nsRDFDOMNodeList* aElements);
 
+    static nsresult
+    GetElementsByAttribute(nsIDOMNode* aNode,
+                           const nsString& aAttribute,
+                           const nsString& aValue,
+                           nsRDFDOMNodeList* aElements);
+
 protected:
     nsIContent*
     FindContent(const nsIContent* aStartNode,
@@ -2060,6 +2066,33 @@ XULDocumentImpl::GetElementsByTagName(const nsString& aTagName, nsIDOMNodeList**
     return NS_OK;
 }
 
+NS_IMETHODIMP
+XULDocumentImpl::GetElementsByAttribute(const nsString& aAttribute, const nsString& aValue, 
+                                        nsIDOMNodeList** aReturn)
+{
+    nsresult rv;
+    nsRDFDOMNodeList* elements;
+    if (NS_FAILED(rv = nsRDFDOMNodeList::Create(&elements))) {
+        NS_ERROR("unable to create node list");
+        return rv;
+    }
+
+    nsIContent* root = GetRootContent();
+    NS_ASSERTION(root != nsnull, "no doc root");
+
+    if (root != nsnull) {
+        nsIDOMNode* domRoot;
+        if (NS_SUCCEEDED(rv = root->QueryInterface(nsIDOMNode::IID(), (void**) &domRoot))) {
+            rv = GetElementsByAttribute(domRoot, aAttribute, aValue, elements);
+            NS_RELEASE(domRoot);
+        }
+        NS_RELEASE(root);
+    }
+
+    *aReturn = elements;
+    return NS_OK;
+}
+
 
 NS_IMETHODIMP
 XULDocumentImpl::GetStyleSheets(nsIDOMStyleSheetCollection** aStyleSheets)
@@ -2865,5 +2898,69 @@ XULDocumentImpl::GetElementsByTagName(nsIDOMNode* aNode,
     return NS_OK;
 }
 
+nsresult
+XULDocumentImpl::GetElementsByAttribute(nsIDOMNode* aNode,
+                                      const nsString& aAttribute,
+                                      const nsString& aValue,
+                                      nsRDFDOMNodeList* aElements)
+{
+    nsresult rv;
+
+    nsAutoString name;
+    nsCOMPtr<nsIContent> pContent;
+    pContent = do_QueryInterface(aNode);
+    
+    PRInt32 namespaceID;
+    pContent->GetNameSpaceID(namespaceID);
+    
+    nsIAtom* pAtom = NS_NewAtom(aAttribute);
+
+    nsString actualValue;
+
+    rv = pContent->GetAttribute(namespaceID, pAtom, actualValue);
+    
+    NS_IF_RELEASE(pAtom);
+
+    if (((rv == NS_CONTENT_ATTR_NO_VALUE || rv == NS_CONTENT_ATTR_HAS_VALUE) && aValue == "*") ||
+        (rv == NS_CONTENT_ATTR_HAS_VALUE && actualValue == aValue))
+    {
+        if (NS_FAILED(rv = aElements->AppendNode(aNode))) {
+            NS_ERROR("unable to append element to node list");
+            return rv;
+        }
+    }
+
+    nsCOMPtr<nsIDOMNodeList> children;
+    if (NS_FAILED(rv = aNode->GetChildNodes( getter_AddRefs(children) ))) {
+        NS_ERROR("unable to get node's children");
+        return rv;
+    }
+
+    // no kids: terminate the recursion
+    if (! children)
+        return NS_OK;
+
+    PRUint32 length;
+    if (NS_FAILED(children->GetLength(&length))) {
+        NS_ERROR("unable to get node list's length");
+        return rv;
+    }
+
+    for (PRUint32 i = 0; i < length; ++i) {
+        nsCOMPtr<nsIDOMNode> child;
+        if (NS_FAILED(rv = children->Item(i, getter_AddRefs(child) ))) {
+            NS_ERROR("unable to get child from list");
+            return rv;
+        }
+
+        if (NS_FAILED(rv = GetElementsByAttribute(child, aAttribute, aValue, aElements))) {
+            NS_ERROR("unable to recursively get elements by attribute");
+            return rv;
+        }
+    }
+
+    return NS_OK;
+}
+
 
 

rdf/content/src/nsXULElement.cpp

@@ -225,11 +225,7 @@ public:
     virtual void   Finalize(JSContext *aContext);
 
     // nsIDOMXULElement
-    NS_IMETHOD DoCommand();
-
-    NS_IMETHOD AddBroadcastListener(const nsString& attr, nsIDOMNode* aNode);
-    NS_IMETHOD RemoveBroadcastListener(const nsString& attr, nsIDOMNode* aNode);
-
+    NS_DECL_IDOMXULELEMENT
 
     // Implementation methods
     nsresult GetResource(nsIRDFResource** aResource);
@@ -242,6 +238,11 @@ public:
                          const nsString& aTagName,
                          nsRDFDOMNodeList* aElements);
 
+    static nsresult
+    GetElementsByAttribute(nsIDOMNode* aNode,
+                           const nsString& aAttributeName,
+                           const nsString& aAttributeValue,
+                           nsRDFDOMNodeList* aElements);
 
 private:
     // pseudo-constants
@@ -836,6 +837,28 @@ RDFElementImpl::GetElementsByTagName(const nsString& aName, nsIDOMNodeList** aRe
     return NS_OK;
 }
 
+NS_IMETHODIMP
+RDFElementImpl::GetElementsByAttribute(const nsString& aAttribute,
+                                       const nsString& aValue,
+                                       nsIDOMNodeList** aReturn)
+{
+    nsresult rv;
+    nsRDFDOMNodeList* elements;
+    if (NS_FAILED(rv = nsRDFDOMNodeList::Create(&elements))) {
+        NS_ERROR("unable to create node list");
+        return rv;
+    }
+
+    nsIDOMNode* domElement;
+    if (NS_SUCCEEDED(rv = QueryInterface(nsIDOMNode::IID(), (void**) &domElement))) {
+        rv = GetElementsByAttribute(domElement, aAttribute, aValue, elements);
+        NS_RELEASE(domElement);
+    }
+
+    *aReturn = elements;
+    return NS_OK;
+}
+
 
 NS_IMETHODIMP
 RDFElementImpl::Normalize()
@@ -2048,3 +2071,72 @@ RDFElementImpl::GetElementsByTagName(nsIDOMNode* aNode,
 
     return NS_OK;
 }
+
+nsresult
+RDFElementImpl::GetElementsByAttribute(nsIDOMNode* aNode,
+                                       const nsString& aAttribute,
+                                       const nsString& aValue,
+                                       nsRDFDOMNodeList* aElements)
+{
+    nsresult rv;
+
+    nsCOMPtr<nsIDOMNodeList> children;
+    if (NS_FAILED(rv = aNode->GetChildNodes( getter_AddRefs(children) ))) {
+        NS_ERROR("unable to get node's children");
+        return rv;
+    }
+
+    // no kids: terminate the recursion
+    if (! children)
+        return NS_OK;
+
+    PRUint32 length;
+    if (NS_FAILED(children->GetLength(&length))) {
+        NS_ERROR("unable to get node list's length");
+        return rv;
+    }
+
+    for (PRUint32 i = 0; i < length; ++i) {
+        nsCOMPtr<nsIDOMNode> child;
+        if (NS_FAILED(rv = children->Item(i, getter_AddRefs(child) ))) {
+            NS_ERROR("unable to get child from list");
+            return rv;
+        }
+
+        nsAutoString name;
+        nsCOMPtr<nsIContent> pContent;
+        pContent = do_QueryInterface(child);
+        
+        PRInt32 namespaceID;
+        pContent->GetNameSpaceID(namespaceID);
+        
+        nsIAtom* pAtom = NS_NewAtom(aAttribute);
+
+        nsString actualValue;
+
+        if (!pContent)
+          return rv;
+        
+        rv = pContent->GetAttribute(namespaceID, pAtom, actualValue);
+        
+        NS_IF_RELEASE(pAtom);
+
+        if (((rv == NS_CONTENT_ATTR_NO_VALUE || rv == NS_CONTENT_ATTR_HAS_VALUE) && aValue == "*") ||
+            (rv == NS_CONTENT_ATTR_HAS_VALUE && actualValue == aValue))
+        {
+            if (NS_FAILED(rv = aElements->AppendNode(child))) {
+                NS_ERROR("unable to append element to node list");
+                return rv;
+            }
+        }
+       
+        // Now recursively look for children
+        if (NS_FAILED(rv = GetElementsByAttribute(child, aAttribute, aValue, aElements))) {
+            NS_ERROR("unable to recursively get elements by attribute");
+            return rv;
+        }
+    }
+
+    return NS_OK;
+}
+