Bug 751323 - Cleanup nsHTMLEditRules::RemoveEmptyNodes(); r=ehsan

content/base/src/nsGkAtomList.h

@@ -71,6 +71,7 @@ GK_ATOM(mozeditorbogusnode, "_moz_editor_bogus_node")
 GK_ATOM(mozgeneratedcontentbefore, "_moz_generated_content_before")
 GK_ATOM(mozgeneratedcontentafter, "_moz_generated_content_after")
 GK_ATOM(mozgeneratedcontentimage, "_moz_generated_content_image")
+GK_ATOM(mozquote, "_moz_quote")
 GK_ATOM(_moz_original_size, "_moz_original_size")
 GK_ATOM(_moz_target, "_moz_target")
 GK_ATOM(_moz_type, "_moz-type")

editor/libeditor/html/nsHTMLEditRules.cpp

@@ -7932,10 +7932,6 @@ nsHTMLEditRules::InDifferentTableElements(nsIDOMNode *aNode1, nsIDOMNode *aNode2
 nsresult 
 nsHTMLEditRules::RemoveEmptyNodes()
 {
-  nsCOMArray<nsIDOMNode> arrayOfEmptyNodes, arrayOfEmptyCites;
-  nsCOMPtr<nsISupports> isupports;
-  PRInt32 nodeCount,j;
-  
   // some general notes on the algorithm used here: the goal is to examine all the
   // nodes in mDocChangeRange, and remove the empty ones.  We do this by using a
   // content iterator to traverse all the nodes in the range, and placing the empty
@@ -7966,48 +7962,41 @@ nsHTMLEditRules::RemoveEmptyNodes()
   nsresult res = iter->Init(mDocChangeRange);
   NS_ENSURE_SUCCESS(res, res);
   
-  nsTArray<nsIDOMNode*> skipList;
+  nsCOMArray<nsINode> arrayOfEmptyNodes, arrayOfEmptyCites;
+  nsTArray<nsINode*> skipList;
 
   // check for empty nodes
-  while (!iter->IsDone())
-  {
-    nsCOMPtr<nsIDOMNode> node, parent;
-
-    node = do_QueryInterface(iter->GetCurrentNode());
+  while (!iter->IsDone()) {
+    nsINode* node = iter->GetCurrentNode();
     NS_ENSURE_TRUE(node, NS_ERROR_FAILURE);
 
-    node->GetParentNode(getter_AddRefs(parent));
+    nsINode* parent = node->GetNodeParent();
     
     PRUint32 idx = skipList.IndexOf(node);
-    if (idx != skipList.NoIndex)
-    {
+    if (idx != skipList.NoIndex) {
       // this node is on our skip list.  Skip processing for this node, 
       // and replace its value in the skip list with the value of its parent
       skipList[idx] = parent;
-    }
-    else
-    {
+    } else {
       bool bIsCandidate = false;
       bool bIsEmptyNode = false;
       bool bIsMailCite = false;
 
-      // don't delete the body
-      if (!nsTextEditUtils::IsBody(node))
-      {
-        // only consider certain nodes to be empty for purposes of removal
-        if (  (bIsMailCite = nsHTMLEditUtils::IsMailCite(node))  ||
-              nsEditor::NodeIsType(node, nsEditProperty::a)      ||
-              nsHTMLEditUtils::IsInlineStyle(node)               ||
-              nsHTMLEditUtils::IsList(node)                      ||
-              nsHTMLEditUtils::IsDiv(node)  )
-        {
+      if (node->IsElement()) {
+        dom::Element* element = node->AsElement();
+        if (element->IsHTML(nsGkAtoms::body)) {
+          // don't delete the body
+        } else if ((bIsMailCite = nsHTMLEditUtils::IsMailCite(element))  ||
+                   element->IsHTML(nsGkAtoms::a)                         ||
+                   nsHTMLEditUtils::IsInlineStyle(element)               ||
+                   nsHTMLEditUtils::IsList(element)                      ||
+                   element->IsHTML(nsGkAtoms::div)) {
+          // only consider certain nodes to be empty for purposes of removal
           bIsCandidate = true;
-        }
-        // these node types are candidates if selection is not in them
-        else if (nsHTMLEditUtils::IsFormatNode(node) ||
-            nsHTMLEditUtils::IsListItem(node)  ||
-            nsHTMLEditUtils::IsBlockquote(node) )
-        {
+        } else if (nsHTMLEditUtils::IsFormatNode(element) ||
+                   nsHTMLEditUtils::IsListItem(element)   ||
+                   element->IsHTML(nsGkAtoms::blockquote)) {
+          // these node types are candidates if selection is not in them
           // if it is one of these, don't delete if selection inside.
           // this is so we can create empty headings, etc, for the
           // user to type into.
@@ -8021,28 +8010,23 @@ nsHTMLEditRules::RemoveEmptyNodes()
         }
       }
       
-      if (bIsCandidate)
-      {
-        if (bIsMailCite)  // we delete mailcites even if they have a solo br in them
-          res = mHTMLEditor->IsEmptyNode(node, &bIsEmptyNode, true, true);  
-        else  // other nodes we require to be empty
-          res = mHTMLEditor->IsEmptyNode(node, &bIsEmptyNode, false, true);
+      if (bIsCandidate) {
+        // we delete mailcites even if they have a solo br in them
+        // other nodes we require to be empty
+        res = mHTMLEditor->IsEmptyNode(node->AsDOMNode(), &bIsEmptyNode,
+                                       bIsMailCite, true);
         NS_ENSURE_SUCCESS(res, res);
-        if (bIsEmptyNode)
-        {
-          if (bIsMailCite)  // mailcites go on a separate list from other empty nodes
-          {
+        if (bIsEmptyNode) {
+          if (bIsMailCite) {
+            // mailcites go on a separate list from other empty nodes
             arrayOfEmptyCites.AppendObject(node);
-          }
-          else
-          {
+          } else {
             arrayOfEmptyNodes.AppendObject(node);
           }
         }
       }
       
-      if (!bIsEmptyNode)
-      {
+      if (!bIsEmptyNode) {
         // put parent on skip list
         skipList.AppendElement(parent);
       }
@@ -8052,10 +8036,9 @@ nsHTMLEditRules::RemoveEmptyNodes()
   }
   
   // now delete the empty nodes
-  nodeCount = arrayOfEmptyNodes.Count();
-  for (j = 0; j < nodeCount; j++)
-  {
-    nsCOMPtr<nsIDOMNode> delNode = arrayOfEmptyNodes[0];
+  PRInt32 nodeCount = arrayOfEmptyNodes.Count();
+  for (PRInt32 j = 0; j < nodeCount; j++) {
+    nsCOMPtr<nsIDOMNode> delNode = arrayOfEmptyNodes[0]->AsDOMNode();
     arrayOfEmptyNodes.RemoveObjectAt(0);
     if (mHTMLEditor->IsModifiableNode(delNode)) {
       res = mHTMLEditor->DeleteNode(delNode);
@@ -8066,9 +8049,8 @@ nsHTMLEditRules::RemoveEmptyNodes()
   // now delete the empty mailcites
   // this is a separate step because we want to pull out any br's and preserve them.
   nodeCount = arrayOfEmptyCites.Count();
-  for (j = 0; j < nodeCount; j++)
-  {
-    nsCOMPtr<nsIDOMNode> delNode = arrayOfEmptyCites[0];
+  for (PRInt32 j = 0; j < nodeCount; j++) {
+    nsCOMPtr<nsIDOMNode> delNode = arrayOfEmptyCites[0]->AsDOMNode();
     arrayOfEmptyCites.RemoveObjectAt(0);
     bool bIsEmptyNode;
     res = mHTMLEditor->IsEmptyNode(delNode, &bIsEmptyNode, false, true);
@@ -8092,9 +8074,11 @@ nsHTMLEditRules::RemoveEmptyNodes()
 }
 
 nsresult
-nsHTMLEditRules::SelectionEndpointInNode(nsIDOMNode *aNode, bool *aResult)
+nsHTMLEditRules::SelectionEndpointInNode(nsINode* aNode, bool* aResult)
 {
   NS_ENSURE_TRUE(aNode && aResult, NS_ERROR_NULL_POINTER);
+
+  nsIDOMNode* node = aNode->AsDOMNode();
   
   *aResult = false;
   
@@ -8120,13 +8104,11 @@ nsHTMLEditRules::SelectionEndpointInNode(nsIDOMNode *aNode, bool *aResult)
     range->GetStartContainer(getter_AddRefs(startParent));
     if (startParent)
     {
-      if (aNode == startParent)
-      {
+      if (node == startParent) {
         *aResult = true;
         return NS_OK;
       }
-      if (nsEditorUtils::IsDescendantOf(startParent, aNode)) 
-      {
+      if (nsEditorUtils::IsDescendantOf(startParent, node)) {
         *aResult = true;
         return NS_OK;
       }
@@ -8135,13 +8117,11 @@ nsHTMLEditRules::SelectionEndpointInNode(nsIDOMNode *aNode, bool *aResult)
     if (startParent == endParent) continue;
     if (endParent)
     {
-      if (aNode == endParent) 
-      {
+      if (node == endParent) {
         *aResult = true;
         return NS_OK;
       }
-      if (nsEditorUtils::IsDescendantOf(endParent, aNode))
-      {
+      if (nsEditorUtils::IsDescendantOf(endParent, node)) {
         *aResult = true;
         return NS_OK;
       }

editor/libeditor/html/nsHTMLEditRules.h

@@ -290,7 +290,7 @@ protected:
                                   nsCOMPtr<nsIDOMNode> *outSelectableNode);
   nsresult InDifferentTableElements(nsIDOMNode *aNode1, nsIDOMNode *aNode2, bool *aResult);
   nsresult RemoveEmptyNodes();
-  nsresult SelectionEndpointInNode(nsIDOMNode *aNode, bool *aResult);
+  nsresult SelectionEndpointInNode(nsINode *aNode, bool *aResult);
   nsresult UpdateDocChangeRange(nsIDOMRange *aRange);
   nsresult ConfirmSelectionInBody();
   nsresult InsertMozBRIfNeeded(nsIDOMNode *aNode);

editor/libeditor/html/nsHTMLEditUtils.cpp

@@ -72,7 +72,15 @@ bool
 nsHTMLEditUtils::IsInlineStyle(nsIDOMNode *node)
 {
   NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsInlineStyle");
-  nsCOMPtr<nsIAtom> nodeAtom = nsEditor::GetTag(node);
+  nsCOMPtr<dom::Element> element = do_QueryInterface(node);
+  return element && IsInlineStyle(element);
+}
+
+bool
+nsHTMLEditUtils::IsInlineStyle(dom::Element* aElement)
+{
+  MOZ_ASSERT(aElement);
+  nsIAtom* nodeAtom = aElement->Tag();
   return (nodeAtom == nsEditProperty::b)
       || (nodeAtom == nsEditProperty::i)
       || (nodeAtom == nsEditProperty::u)
@@ -94,7 +102,15 @@ bool
 nsHTMLEditUtils::IsFormatNode(nsIDOMNode *node)
 {
   NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsFormatNode");
-  nsCOMPtr<nsIAtom> nodeAtom = nsEditor::GetTag(node);
+  nsCOMPtr<dom::Element> element = do_QueryInterface(node);
+  return element && IsFormatNode(element);
+}
+
+bool
+nsHTMLEditUtils::IsFormatNode(dom::Element* aElement)
+{
+  MOZ_ASSERT(aElement);
+  nsIAtom* nodeAtom = aElement->Tag();
   return (nodeAtom == nsEditProperty::p)
       || (nodeAtom == nsEditProperty::pre)
       || (nodeAtom == nsEditProperty::h1)
@@ -423,34 +439,29 @@ nsHTMLEditUtils::IsMozDiv(nsIDOMNode *node)
 ///////////////////////////////////////////////////////////////////////////
 // IsMailCite: true if node an html blockquote with type=cite
 //                  
-bool 
-nsHTMLEditUtils::IsMailCite(nsIDOMNode *node)
+bool
+nsHTMLEditUtils::IsMailCite(nsIDOMNode* aNode)
 {
-  NS_PRECONDITION(node, "null parent passed to nsHTMLEditUtils::IsMailCite");
-  nsCOMPtr<nsIDOMElement> elem = do_QueryInterface(node);
-  if (!elem) {
-    return false;
-  }
-  nsAutoString attrName (NS_LITERAL_STRING("type")); 
-  
+  NS_PRECONDITION(aNode, "null parent passed to nsHTMLEditUtils::IsMailCite");
+  nsCOMPtr<dom::Element> element = do_QueryInterface(aNode);
+  return element && IsMailCite(element);
+}
+
+bool
+nsHTMLEditUtils::IsMailCite(dom::Element* aElement)
+{
+  MOZ_ASSERT(aElement);
+
   // don't ask me why, but our html mailcites are id'd by "type=cite"...
-  nsAutoString attrVal;
-  nsresult res = elem->GetAttribute(attrName, attrVal);
-  ToLowerCase(attrVal);
-  if (NS_SUCCEEDED(res))
-  {
-    if (attrVal.EqualsLiteral("cite"))
-      return true;
+  if (aElement->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
+                            NS_LITERAL_STRING("cite"), eIgnoreCase)) {
+    return true;
   }
 
   // ... but our plaintext mailcites by "_moz_quote=true".  go figure.
-  attrName.AssignLiteral("_moz_quote");
-  res = elem->GetAttribute(attrName, attrVal);
-  if (NS_SUCCEEDED(res))
-  {
-    ToLowerCase(attrVal);
-    if (attrVal.EqualsLiteral("true"))
-      return true;
+  if (aElement->AttrValueIs(kNameSpaceID_None, nsGkAtoms::mozquote,
+                            NS_LITERAL_STRING("true"), eIgnoreCase)) {
+    return true;
   }
 
   return false;

editor/libeditor/html/nsHTMLEditUtils.h

@@ -56,7 +56,9 @@ public:
   static bool IsSmall(nsIDOMNode *aNode);
 
   // from nsHTMLEditRules:
+  static bool IsInlineStyle(mozilla::dom::Element* aNode);
   static bool IsInlineStyle(nsIDOMNode *aNode);
+  static bool IsFormatNode(mozilla::dom::Element* aNode);
   static bool IsFormatNode(nsIDOMNode *aNode);
   static bool IsNodeThatCanOutdent(nsIDOMNode *aNode);
   static bool IsHeader(nsIDOMNode *aNode);
@@ -85,6 +87,7 @@ public:
   static bool IsNamedAnchor(nsIDOMNode *aNode);
   static bool IsDiv(nsIDOMNode *aNode);
   static bool IsMozDiv(nsIDOMNode *aNode);
+  static bool IsMailCite(mozilla::dom::Element* aNode);
   static bool IsMailCite(nsIDOMNode *aNode);
   static bool IsFormWidget(mozilla::dom::Element* aNode);
   static bool IsFormWidget(nsIDOMNode *aNode);