work in progress

editor/base/nsEditor.cpp

@@ -649,6 +649,25 @@ nsEditor::EndTransaction()
   return NS_OK;
 }
 
+nsresult nsEditor::ScrollIntoView(PRBool aScrollToBegin)
+{
+  nsresult result;
+  /*
+  if (mPresShell)
+  {
+    nsCOMPtr<nsIDOMSelection> selection;
+    result = mPresShell->GetSelection(getter_AddRefs(selection));
+    if (NS_SUCCEEDED(result) && selection)
+    {
+      // get the content of the start of the selection
+      // get its layout object
+      // get its frame
+      // scroll that frame into view
+      mPresShell->
+*/
+  return result;
+}
+
 
 nsresult nsEditor::CreateNode(const nsString& aTag,
                               nsIDOMNode *    aParent,

editor/base/nsEditor.h

@@ -160,6 +160,8 @@ public:
 
   virtual nsresult EndTransaction();
 
+  virtual nsresult ScrollIntoView(PRBool aScrollToBegin);
+
 /*END nsIEditor interfaces*/
 
 

editor/base/nsTextEditor.cpp

@@ -370,7 +370,7 @@ nsresult nsTextEditor::ScrollIntoView(PRBool aScrollToBegin)
   nsresult result=NS_ERROR_NOT_INITIALIZED;
   if (mEditor)
   {
-    result = NS_ERROR_NOT_IMPLEMENTED;
+    result = mEditor->ScrollIntoView(aScrollToBegin);
   }
   return result;
 }

editor/libeditor/base/nsEditor.cpp

@@ -649,6 +649,25 @@ nsEditor::EndTransaction()
   return NS_OK;
 }
 
+nsresult nsEditor::ScrollIntoView(PRBool aScrollToBegin)
+{
+  nsresult result;
+  /*
+  if (mPresShell)
+  {
+    nsCOMPtr<nsIDOMSelection> selection;
+    result = mPresShell->GetSelection(getter_AddRefs(selection));
+    if (NS_SUCCEEDED(result) && selection)
+    {
+      // get the content of the start of the selection
+      // get its layout object
+      // get its frame
+      // scroll that frame into view
+      mPresShell->
+*/
+  return result;
+}
+
 
 nsresult nsEditor::CreateNode(const nsString& aTag,
                               nsIDOMNode *    aParent,

editor/libeditor/base/nsEditor.h

@@ -160,6 +160,8 @@ public:
 
   virtual nsresult EndTransaction();
 
+  virtual nsresult ScrollIntoView(PRBool aScrollToBegin);
+
 /*END nsIEditor interfaces*/
 
 

editor/public/nsIEditor.h

@@ -264,6 +264,12 @@ public:
     */
   virtual nsresult EndTransaction()=0;
 
+  /** scroll the viewport so the selection is in view.
+    * @param aScrollToBegin  PR_TRUE if the beginning of the selection is to be scrolled into view.
+    *                        PR_FALSE if the end of the selection is to be scrolled into view
+    */
+  virtual nsresult ScrollIntoView(PRBool aScrollToBegin)=0;
+
 
 };