Fix nsXFormsModelElement::Rebuild() to work correctly. Patch by aaronr@us.ibm.com, r=allan@beaufour.dk, sr=me.

extensions/xforms/Makefile.in

@@ -138,4 +138,6 @@ CPPSRCS		= \
 
 EXTRA_DSO_LDOPTS = $(MOZ_COMPONENT_LIBS)
 
+PREF_JS_EXPORTS = $(srcdir)/xforms.js
+
 include $(topsrcdir)/config/rules.mk

extensions/xforms/nsXFormsContextContainer.cpp

@@ -89,6 +89,7 @@ public:
   NS_IMETHOD CloneState(nsIDOMElement *aElement);
 
   // nsIXFormsControl
+  NS_IMETHOD Bind();
   NS_IMETHOD Refresh();
 
   // nsIXFormsContextControl
@@ -214,6 +215,13 @@ nsXFormsContextContainer::GetContext(nsAString    &aModelID,
 }
 
 // nsIXFormsControl
+
+NS_IMETHODIMP
+nsXFormsContextContainer::Bind()
+{
+  return NS_OK;
+}
+
 nsresult
 nsXFormsContextContainer::Refresh()
 {

extensions/xforms/nsXFormsControlStub.cpp

@@ -100,6 +100,30 @@ nsXFormsControlStub::GetElement(nsIDOMElement **aElement)
   return NS_OK;  
 }
 
+NS_IMETHODIMP
+nsXFormsControlStub::ResetBoundNode()
+{
+  mBoundNode = nsnull;
+
+  nsCOMPtr<nsIModelElementPrivate> modelNode;
+  nsCOMPtr<nsIDOMXPathResult> result;
+  nsresult rv =
+    ProcessNodeBinding(NS_LITERAL_STRING("ref"),
+                       nsIDOMXPathResult::FIRST_ORDERED_NODE_TYPE,
+                       getter_AddRefs(result),
+                       getter_AddRefs(modelNode));
+  NS_ENSURE_SUCCESS(rv, rv);
+  
+  if (!result) {
+    return NS_OK;
+  }
+
+  // Get context node, if any  
+  result->GetSingleNodeValue(getter_AddRefs(mBoundNode));
+
+  return NS_OK;
+}
+
 /**
  * @note Refresh() is always called after a Bind(), so if a control decides to
  * do all the work in Refresh() this function implements a NOP Bind().
@@ -107,7 +131,7 @@ nsXFormsControlStub::GetElement(nsIDOMElement **aElement)
 NS_IMETHODIMP
 nsXFormsControlStub::Bind()
 {
-  return NS_OK;
+  return ResetBoundNode();
 }
 
 NS_IMETHODIMP

extensions/xforms/nsXFormsControlStub.h

@@ -83,6 +83,7 @@ public:
   NS_IMETHOD GetBoundNode(nsIDOMNode **aBoundNode);
   NS_IMETHOD GetDependencies(nsIArray **aDependencies);
   NS_IMETHOD GetElement(nsIDOMElement **aElement);
+  NS_IMETHOD ResetBoundNode();
   NS_IMETHOD Bind();
   NS_IMETHOD TryFocus(PRBool* aOK);
 

extensions/xforms/nsXFormsGroupElement.cpp

@@ -106,6 +106,7 @@ public:
   NS_IMETHOD OnDestroyed();
 
   // nsIXFormsControl
+  NS_IMETHOD Bind();
   NS_IMETHOD Refresh();
   NS_IMETHOD TryFocus(PRBool* aOK);
 
@@ -181,6 +182,22 @@ nsXFormsGroupElement::OnDestroyed()
 
 // nsIXFormsControl
 
+NS_IMETHODIMP
+nsXFormsGroupElement::Bind()
+{
+  mModelID.Truncate();
+
+  // Re-evaluate what instance node this element is bound to.
+  ResetBoundNode();
+
+  // Get model ID
+  nsCOMPtr<nsIDOMElement> modelElement = do_QueryInterface(mModel);
+  NS_ENSURE_TRUE(modelElement, NS_ERROR_FAILURE);
+  modelElement->GetAttribute(NS_LITERAL_STRING("id"), mModelID);
+
+  return NS_OK;
+}
+
 NS_IMETHODIMP
 nsXFormsGroupElement::Refresh()
 {
@@ -188,34 +205,6 @@ nsXFormsGroupElement::Refresh()
   printf("nsXFormsGroupElement::Refresh()\n");
 #endif
 
-  if (!mHTMLElement) 
-    return NS_OK;
-
-  mModelID.Truncate();
-
-  nsCOMPtr<nsIModelElementPrivate> modelNode;
-  nsCOMPtr<nsIDOMXPathResult> result;
-  nsresult rv =
-    ProcessNodeBinding(NS_LITERAL_STRING("ref"),
-                       nsIDOMXPathResult::FIRST_ORDERED_NODE_TYPE,
-                       getter_AddRefs(result),
-                       getter_AddRefs(modelNode));
-  NS_ENSURE_SUCCESS(rv, rv);
-  
-  if (!result) {
-    return NS_OK;
-  }
-
-  
-  // Get model ID
-  nsCOMPtr<nsIDOMElement> modelElement = do_QueryInterface(modelNode);
-  NS_ENSURE_TRUE(modelElement, NS_ERROR_FAILURE);
-  modelElement->GetAttribute(NS_LITERAL_STRING("id"), mModelID);
-
-  // Get context node, if any  
-  result->GetSingleNodeValue(getter_AddRefs(mBoundNode));
-  NS_ENSURE_STATE(mBoundNode);
-  
   return NS_OK;
 }
 

extensions/xforms/nsXFormsInputElement.cpp

@@ -77,7 +77,6 @@ public:
   NS_IMETHOD OnDestroyed();
 
   // nsIXFormsControl
-  NS_IMETHOD Bind();
   NS_IMETHOD Refresh();
   NS_IMETHOD TryFocus(PRBool* aOK);
 
@@ -268,28 +267,6 @@ nsXFormsInputElement::Blur(nsIDOMEvent *aEvent)
 
 // nsIXFormsControl
 
-NS_IMETHODIMP
-nsXFormsInputElement::Bind()
-{
-  if (!mControl)
-    return NS_OK;
-  
-  mBoundNode = nsnull;
-  
-  nsCOMPtr<nsIDOMXPathResult> result;
-  nsresult rv = ProcessNodeBinding(NS_LITERAL_STRING("ref"),
-                                   nsIDOMXPathResult::FIRST_ORDERED_NODE_TYPE,
-                                   getter_AddRefs(result));
-  
-  NS_ENSURE_SUCCESS(rv, rv);
-  
-  if (result) {
-    result->GetSingleNodeValue(getter_AddRefs(mBoundNode));
-  }
-  
-  return NS_OK;
-}
-  
 NS_IMETHODIMP
 nsXFormsInputElement::Refresh()
 {

extensions/xforms/nsXFormsLabelElement.cpp

@@ -168,22 +168,12 @@ nsXFormsLabelElement::RefreshLabel()
   // or linking attributes are present, we don't want to show the inline text
   // at all.
 
-  nsCOMPtr<nsIDOMXPathResult> result;
-  nsresult rv =
-    ProcessNodeBinding(NS_LITERAL_STRING("ref"),
-                       nsIDOMXPathResult::FIRST_ORDERED_NODE_TYPE,
-                       getter_AddRefs(result));
-
   nsAutoString labelValue;
   PRBool foundValue = PR_FALSE;
 
-  if (NS_SUCCEEDED(rv) && result) {
-    result->GetSingleNodeValue(getter_AddRefs(mBoundNode));
-
-    if (mBoundNode) {
-      nsXFormsUtils::GetNodeValue(mBoundNode, labelValue);
-      foundValue = PR_TRUE;
-    }
+  if (mBoundNode) {
+    nsXFormsUtils::GetNodeValue(mBoundNode, labelValue);
+    foundValue = PR_TRUE;
   }
 
   // if (!foundValue) {

extensions/xforms/nsXFormsModelElement.cpp

@@ -423,11 +423,39 @@ nsXFormsModelElement::Rebuild()
   // TODO: Clear graph and re-attach elements
 
   // 1 . Clear graph
-  // mMDG.Clear();
+  mMDG.Clear();
 
   // 2. Re-attach all elements
 
+  // Copy the form control list as it stands right now.
+  nsVoidArray *oldFormList = new nsVoidArray();
+  *oldFormList = mFormControls;
+
+  // Clear out mFormControls so that we can rebuild the list.  We'll go control 
+  // by control over the old list and rebind the controls.
+  mFormControls.Clear();
+
+  PRInt32 controlCount = oldFormList->Count();
+  for (PRInt32 i = 0; i < controlCount; ++i) {
+    nsIXFormsControl* control = NS_STATIC_CAST(nsIXFormsControl*, 
+                                               (*oldFormList)[i]);
+    /// @todo If a control is removed because of previous control has been
+    /// refreshed, we do, obviously, not need to refresh it. So mFormControls
+    /// should have weak bindings to the controls I guess? (XXX)
+    ///
+    /// This could happen for \<repeatitem\>s for example.
+    if (!control) {
+      continue;
+    }
+
+    // run bind to reset mBoundNode for all of these controls and also, in the
+    // process, they will be added to the model that they should be bound to.
+    control->Bind();
+  }
+
   // 3. Rebuild graph
+  ProcessBindElements();
+
   return mMDG.Rebuild();
 }
 
@@ -948,14 +976,13 @@ nsXFormsModelElement::FindInstanceDocument(const nsAString &aID)
 }
 
 nsresult
-nsXFormsModelElement::FinishConstruction()
+nsXFormsModelElement::ProcessBindElements()
 {
-  // 3. if applicable, initialize P3P
-
-  // 4. construct instance data from initial instance data.  apply all
-  // <bind> elements in document order.
-
-  // we get the instance data from our instance child nodes
+  // ProcessBindElements() will go through each xforms:bind element in
+  // document order and apply all of the Model Item Properties to the
+  // instance items in the nodeset. This information will also be entered
+  // in the Master Dependency Graph.  Most of this work is done in the
+  // ProcessBind() method.
 
   nsCOMPtr<nsIDOMDocument> firstInstanceDoc =
     FindInstanceDocument(EmptyString());
@@ -996,6 +1023,21 @@ nsXFormsModelElement::FinishConstruction()
     }
   }
 
+  return NS_OK;
+}
+
+nsresult
+nsXFormsModelElement::FinishConstruction()
+{
+  // 3. if applicable, initialize P3P
+
+  // 4. construct instance data from initial instance data.  apply all
+  // <bind> elements in document order.
+
+  // we get the instance data from our instance child nodes
+
+  ProcessBindElements();
+
   // 5. dispatch xforms-rebuild, xforms-recalculate, xforms-revalidate
 
   nsXFormsUtils::DispatchEvent(mElement, eEvent_Rebuild);

extensions/xforms/nsXFormsModelElement.h

@@ -101,6 +101,7 @@ private:
   NS_HIDDEN_(already_AddRefed<nsIDOMDocument>)
     FindInstanceDocument(const nsAString &aID);
 
+  NS_HIDDEN_(nsresult) ProcessBindElements();
   NS_HIDDEN_(nsresult) FinishConstruction();
   NS_HIDDEN_(void)     MaybeNotifyCompletion();
 

extensions/xforms/nsXFormsRepeatElement.cpp

@@ -159,6 +159,7 @@ public:
   NS_IMETHOD DoneAddingChildren();
 
   // nsIXFormsControl
+  NS_IMETHOD Bind();
   NS_IMETHOD Refresh();
   NS_IMETHOD TryFocus(PRBool* aOK);
 
@@ -280,6 +281,12 @@ nsXFormsRepeatElement::DoneAddingChildren()
 
 // nsXFormsControl
 
+NS_IMETHODIMP
+nsXFormsRepeatElement::Bind()
+{
+  return NS_OK;
+}
+
 NS_IMETHODIMP
 nsXFormsRepeatElement::Refresh()
 {

extensions/xforms/nsXFormsSelectElement.cpp

@@ -297,17 +297,11 @@ nsXFormsSelectElement::Refresh()
     mSelect->SetSelectedIndex(-1);
   }
 
-  nsCOMPtr<nsIDOMXPathResult> result;
-  rv = ProcessNodeBinding(NS_LITERAL_STRING("ref"),
-                          nsIDOMXPathResult::FIRST_ORDERED_NODE_TYPE,
-                          getter_AddRefs(result));
-  NS_ENSURE_SUCCESS(rv, rv);
-
-  if (result)
-    result->GetSingleNodeValue(getter_AddRefs(mBoundNode));
-
-  if (!mBoundNode)
+  // since single node binding is optional, we won't send an error code.  But
+  // there is no point continuing below without mBoundNode.
+  if(!mBoundNode) {
     return NS_OK;
+  }
 
   nsCOMPtr<nsIDOMNodeList> children;
   mBoundNode->GetChildNodes(getter_AddRefs(children));

extensions/xforms/nsXFormsSwitchElement.cpp

@@ -88,6 +88,7 @@ public:
   NS_DECL_NSIXFORMSSWITCHELEMENT
 
   // nsIXFormsControl
+  NS_IMETHOD Bind();
   NS_IMETHOD Refresh();
 
   NS_DECL_NSIXFORMSCONTEXTCONTROL
@@ -117,8 +118,6 @@ private:
    */
   void SetFocus(nsIDOMElement* aDeselected, nsIDOMElement* aSelected);
 
-  nsresult Process();
-
   nsCOMPtr<nsIDOMElement> mVisual;
   nsCOMPtr<nsIDOMElement> mSelected;
   PRBool mDoneAddingChildren;
@@ -227,47 +226,29 @@ nsXFormsSwitchElement::DoneAddingChildren()
 // nsIXFormsControl
 
 NS_IMETHODIMP
-nsXFormsSwitchElement::Refresh()
-{
-  nsresult rv = NS_OK;
-  if (mDoneAddingChildren) {
-    rv = Process();
-  }
-  return rv;
-}
-
-// nsXFormsSwitchElement
-
-nsresult
-nsXFormsSwitchElement::Process()
+nsXFormsSwitchElement::Bind()
 {
   mModelID.Truncate();
 
-  nsCOMPtr<nsIModelElementPrivate> modelNode;
-  nsCOMPtr<nsIDOMXPathResult> result;
-  nsresult rv =
-    ProcessNodeBinding(NS_LITERAL_STRING("ref"),
-                       nsIDOMXPathResult::FIRST_ORDERED_NODE_TYPE,
-                       getter_AddRefs(result),
-                       getter_AddRefs(modelNode));
-  
-  NS_ENSURE_SUCCESS(rv, rv);
-  
-  if (!result) {
-    return NS_OK;
-  }
+  // Re-evaluate what instance node this element is bound to.
+  ResetBoundNode();
 
   // Get model ID
-  nsCOMPtr<nsIDOMElement> modelElement = do_QueryInterface(modelNode);
+  nsCOMPtr<nsIDOMElement> modelElement = do_QueryInterface(mModel);
   NS_ENSURE_TRUE(modelElement, NS_ERROR_FAILURE);
   modelElement->GetAttribute(NS_LITERAL_STRING("id"), mModelID);
 
-  // Get context node, if any  
-  result->GetSingleNodeValue(getter_AddRefs(mBoundNode));
-
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsXFormsSwitchElement::Refresh()
+{
+  return NS_OK;
+}
+
+// nsXFormsSwitchElement
+
 NS_IMETHODIMP
 nsXFormsSwitchElement::SetContextNode(nsIDOMNode *aContextNode)
 {

extensions/xforms/nsXFormsTriggerElement.cpp

@@ -122,20 +122,6 @@ nsXFormsTriggerElement::GetInsertionPoint(nsIDOMElement **aElement)
 NS_IMETHODIMP
 nsXFormsTriggerElement::Refresh()
 {
-  nsCOMPtr<nsIDOMXPathResult> result;
-  nsresult rv =
-    ProcessNodeBinding(NS_LITERAL_STRING("ref"),
-                       nsIDOMXPathResult::FIRST_ORDERED_NODE_TYPE,
-                       getter_AddRefs(result));
-  NS_ENSURE_SUCCESS(rv, rv);
-
-  if (!result) {
-    return NS_OK;
-  }
-
-  // Get context node, if any  
-  result->GetSingleNodeValue(getter_AddRefs(mBoundNode));
-
   return NS_OK;
 }
 

extensions/xforms/nsXFormsUploadElement.cpp

@@ -248,22 +248,6 @@ nsXFormsUploadElement::Refresh()
   if (!mInput)
     return NS_OK;
 
-  mBoundNode = nsnull;
-
-  nsCOMPtr<nsIDOMXPathResult> result;
-  nsresult rv =
-    ProcessNodeBinding(NS_LITERAL_STRING("ref"),
-                       nsIDOMXPathResult::FIRST_ORDERED_NODE_TYPE,
-                       getter_AddRefs(result));
-  NS_ENSURE_SUCCESS(rv, rv);
-  
-  
-    if (result)
-    result->GetSingleNodeValue(getter_AddRefs(mBoundNode));
-  
-  if (!mBoundNode)
-      return NS_OK;
-  
   nsCOMPtr<nsIContent> content = do_QueryInterface(mBoundNode);
   NS_ENSURE_STATE(content);
 

extensions/xforms/package/Makefile.in

@@ -63,9 +63,11 @@ PACKAGE_VERSION = 0.1
 xpi:
 	@echo Copying files to staging area...
 	rm -rf stage
-	$(NSINSTALL) -D stage
+	$(INSTALL) -D stage
 	$(PERL) $(topsrcdir)/xpinstall/packager/pkgcp.pl -o $(PKGCP_PLATFORM) -s $(DIST)/bin -d stage -f $(srcdir)/$(PACKAGE_FILE) -v
-	$(NSINSTALL) $(srcdir)/install.rdf stage/xforms
+	$(INSTALL) $(srcdir)/install.rdf stage/xforms
+	$(INSTALL) -D stage/xforms/defaults/preferences
+	$(INSTALL) $(srcdir)/../xforms.js stage/xforms/defaults/preferences
 	@echo Creating install.js...
 	rm -f xforms.js
 	$(PERL) $(topsrcdir)/toolkit/mozapps/installer/makejs.pl $(srcdir)/xforms.jst $(PACKAGE_VERSION) stage/xforms

extensions/xforms/package/xforms.jst

@@ -11,6 +11,9 @@ if (verifyDiskSpace(fProgram, srChrome + srComponents))
   logComment("addDirectory components: " + err);
   err = addDirectory("", "0.1", "chrome", fProgram, "chrome", true);
   logComment("addDirectory chrome: " + err);
+  err = addFile("", "0.1", "defaults/preferences/xforms.js", fProgram,
+                "defaults/pref/xforms.js", true);
+  logComment("addFile xforms.js: " + err);
 
   registerChrome(PACKAGE | DELAYED_CHROME, getFolder("Chrome", "xforms.jar"),
                  "content/xforms/");

extensions/xforms/xforms.js

@@ -0,0 +1 @@
+pref("general.useragent.productComment", "xforms/1.0");