editor/txtsvc/public/nsITextServicesDocument.h

editor/txtsvc/src/nsTextServicesDocument.cpp
editor/txtsvc/src/nsTextServicesDocument.h

  - Added ScrollSelectionIntoView() method to nsITextServicesDocument
    interface and implementation.

editor/libeditor/txtsvc/nsITextServicesDocument.h

@@ -175,6 +175,12 @@ public:
 
   NS_IMETHOD SetSelection(PRInt32 aOffset, PRInt32 aLength) = 0;
 
+  /**
+   * Scrolls the document so that the current selection is visible.
+   */
+
+  NS_IMETHOD ScrollSelectionIntoView() = 0;
+
   /**
    * Deletes the text selected by SetSelection(). Calling
    * DeleteSelection with nothing selected, or with a collapsed

editor/libeditor/txtsvc/nsTextServicesDocument.cpp

@@ -1697,6 +1697,23 @@ nsTextServicesDocument::SetSelection(PRInt32 aOffset, PRInt32 aLength)
   return result;
 }
 
+NS_IMETHODIMP
+nsTextServicesDocument::ScrollSelectionIntoView()
+{
+  nsresult result;
+
+  if (!mPresShell)
+    return NS_ERROR_FAILURE;
+
+  LOCK_DOC(this);
+
+  result = mPresShell->ScrollSelectionIntoView(SELECTION_NORMAL, SELECTION_FOCUS_REGION);
+
+  UNLOCK_DOC(this);
+
+  return result;
+}
+
 NS_IMETHODIMP
 nsTextServicesDocument::DeleteSelection()
 {

editor/libeditor/txtsvc/nsTextServicesDocument.h

@@ -114,6 +114,7 @@ public:
   NS_IMETHOD NextBlock();
   NS_IMETHOD IsDone(PRBool *aIsDone);
   NS_IMETHOD SetSelection(PRInt32 aOffset, PRInt32 aLength);
+  NS_IMETHOD ScrollSelectionIntoView();
   NS_IMETHOD DeleteSelection();
   NS_IMETHOD InsertText(const nsString *aText);
   NS_IMETHOD SetDisplayStyle(TSDDisplayStyle aStyle);

editor/txtsvc/public/nsITextServicesDocument.h

@@ -175,6 +175,12 @@ public:
 
   NS_IMETHOD SetSelection(PRInt32 aOffset, PRInt32 aLength) = 0;
 
+  /**
+   * Scrolls the document so that the current selection is visible.
+   */
+
+  NS_IMETHOD ScrollSelectionIntoView() = 0;
+
   /**
    * Deletes the text selected by SetSelection(). Calling
    * DeleteSelection with nothing selected, or with a collapsed

editor/txtsvc/src/nsTextServicesDocument.cpp

@@ -1697,6 +1697,23 @@ nsTextServicesDocument::SetSelection(PRInt32 aOffset, PRInt32 aLength)
   return result;
 }
 
+NS_IMETHODIMP
+nsTextServicesDocument::ScrollSelectionIntoView()
+{
+  nsresult result;
+
+  if (!mPresShell)
+    return NS_ERROR_FAILURE;
+
+  LOCK_DOC(this);
+
+  result = mPresShell->ScrollSelectionIntoView(SELECTION_NORMAL, SELECTION_FOCUS_REGION);
+
+  UNLOCK_DOC(this);
+
+  return result;
+}
+
 NS_IMETHODIMP
 nsTextServicesDocument::DeleteSelection()
 {

editor/txtsvc/src/nsTextServicesDocument.h

@@ -114,6 +114,7 @@ public:
   NS_IMETHOD NextBlock();
   NS_IMETHOD IsDone(PRBool *aIsDone);
   NS_IMETHOD SetSelection(PRInt32 aOffset, PRInt32 aLength);
+  NS_IMETHOD ScrollSelectionIntoView();
   NS_IMETHOD DeleteSelection();
   NS_IMETHOD InsertText(const nsString *aText);
   NS_IMETHOD SetDisplayStyle(TSDDisplayStyle aStyle);