Fix for 52150; show caret in new composer/mail composer/AIM windows. If the editor is focussed on creation, show the caret instead of relying on a focus event. r, sr = kin,saari, hyatt

git-svn-id: svn://10.0.0.236/trunk@80042 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/editor/base/nsEditorShell.cpp

@@ -39,6 +39,7 @@
 #include "nsIDiskDocument.h"
 #include "nsIDocument.h"
 #include "nsIDOMWindowInternal.h"
+#include "nsPIDOMWindow.h"
 #include "nsIDOMNode.h"
 #include "nsIDOMNodeList.h"
 #include "nsICSSLoader.h"
@@ -91,6 +92,8 @@
 #include "nsIRefreshURI.h"
 #include "nsIPref.h"
 
+#include "nsILookAndFeel.h"
+
 ///////////////////////////////////////
 // Editor Includes
 ///////////////////////////////////////
@@ -630,6 +633,43 @@ nsEditorShell::PrepareDocumentForEditing(nsIDocumentLoader* aLoader, nsIURI *aUr
     // (this also turns on the caret)
     mEditor->SetCaretToDocumentStart();
   }
+
+  // show the caret, if our window is focussed already
+  nsCOMPtr<nsIDOMWindowInternal> contentInternal = do_QueryReferent(mContentWindow);
+  nsCOMPtr<nsPIDOMWindow> privContent(do_QueryInterface(contentInternal));
+  
+  if (privContent)
+  {
+    nsCOMPtr<nsIDOMXULCommandDispatcher> commandDispatcher;
+    privContent->GetRootCommandDispatcher(getter_AddRefs(commandDispatcher));
+    
+    if (commandDispatcher)
+    {
+      nsCOMPtr<nsIDOMWindowInternal> focussedWindow;
+      commandDispatcher->GetFocusedWindow(getter_AddRefs(focussedWindow));
+
+      if (focussedWindow.get() == contentInternal.get())    // now see if we are focussed
+      {
+        nsCOMPtr<nsISelectionController> selCon;
+        editor->GetSelectionController(getter_AddRefs(selCon));
+
+        PRInt32 pixelWidth = 1;
+
+        static NS_DEFINE_CID(kLookAndFeelCID, NS_LOOKANDFEEL_CID);
+
+        nsCOMPtr<nsILookAndFeel> lookNFeel = do_GetService(kLookAndFeelCID);
+        if (lookNFeel)
+          lookNFeel->GetMetric(nsILookAndFeel::eMetric_MultiLineCaretWidth, pixelWidth);
+
+        selCon->SetCaretWidth(pixelWidth);
+        selCon->SetCaretEnabled(PR_FALSE);
+        selCon->SetCaretEnabled(PR_TRUE);   // make damn sure it shows; the last SetVisible
+                                            // may have happened when we didn't have focus.
+        selCon->SetDisplaySelection(nsISelectionController::SELECTION_ON);
+      }
+    }
+  }
+
   return NS_OK;
 }