fix for #64462. play OS specified sound when new mail arrives.

r=pavlov, sr=bienvenu.  right now, this only works on windows.
mac is next.  for linux (and the other platforms), we currently beep.
if there isn't an OS specified sound, we'll play the pre-packaged
sound that mailnews will eventually ship with.

mailnews/base/src/nsStatusBarBiffManager.cpp

@@ -130,45 +130,11 @@ nsresult nsStatusBarBiffManager::PerformStatusBarBiff(PRUint32 newBiffFlag)
         if (NS_SUCCEEDED(rv) && playSoundOnBiff) {
           nsCOMPtr<nsISound> sound = do_CreateInstance("@mozilla.org/sound;1");
           if (sound) {
-              PRBool playDefaultSound = PR_TRUE;
-              rv = pref->GetBoolPref(PREF_PLAY_DEFAULT_SOUND, &playDefaultSound);
-              if (NS_SUCCEEDED(rv) && !playDefaultSound) {
-                nsCOMPtr<nsILocalFile> soundFile;
-                rv = pref->GetFileXPref(PREF_USER_SPECIFIED_SOUND_FILE, getter_AddRefs(soundFile));
-                if (NS_SUCCEEDED(rv) && soundFile) {
-                  nsCOMPtr <nsIFile> file = do_QueryInterface(soundFile);
-                  if (file) {
-                    rv = NS_NewFileURI(getter_AddRefs(uri), file);
-                    if (NS_FAILED(rv))
-                        return rv;
-                  }
-                  else {
-                    rv = NS_ERROR_FAILURE;
-                  }
-                }
-              }
-
-              if ((NS_FAILED(rv) || playDefaultSound) && nsCRT::strlen(mDefaultSoundURL.get())) {
-                rv = NS_NewURI(getter_AddRefs(uri), mDefaultSoundURL.get());
-              }
-            }
-
-            nsXPIDLCString soundURLSpec;
-            if (uri)
-              rv = uri->GetSpec(getter_Copies(soundURLSpec));
-            else
-              rv = NS_ERROR_FAILURE;
-
-            nsCOMPtr<nsIURL> soundURL(do_QueryInterface(uri));
-            if (NS_SUCCEEDED(rv) && soundURL && nsCRT::strlen(soundURLSpec.get())) {
-              sound->Play(soundURL);
-            }
-            else {
-              sound->Beep();
-            }
+            rv = sound->PlaySystemSound("Mailbeep");
           } 
         }
       }
+    }
     
 	nsCOMPtr<nsIWindowMediator> windowMediator = 
 	         do_GetService(kWindowMediatorCID, &rv);

widget/public/nsISound.idl

@@ -29,5 +29,9 @@ interface nsIURL;
 interface nsISound : nsISupports
 {
   void play(in nsIURL aURL);
+  /**
+   * for playing system sounds
+   */
+  void playSystemSound(in string soundAlias);  
   void beep();
 };

widget/src/beos/nsSound.cpp

@@ -110,3 +110,8 @@ NS_METHOD nsSound::Play(nsIURL *aURL)
 */
 	return NS_OK;
 }
+
+NS_IMETHODIMP nsSound::PlaySystemSound(const char *aSoundAlias)
+{
+  return Beep();
+}

widget/src/gtk/nsSound.cpp

@@ -243,3 +243,8 @@ NS_METHOD nsSound::Play(nsIURL *aURL)
 
   return rv;
 }
+
+NS_IMETHODIMP nsSound::PlaySystemSound(const char *aSoundAlias)
+{
+  return Beep();
+}

widget/src/mac/nsSound.cpp

@@ -180,3 +180,8 @@ PRBool nsSound::HaveQuickTime()
   OSErr err = Gestalt (gestaltQuickTime, &gestResult);
   return (err == noErr) && ((long)EnterMovies != kUnresolvedCFragSymbolAddress);
 }
+
+NS_IMETHODIMP nsSound::PlaySystemSound(const char *aSoundAlias)
+{
+  return Beep();
+}

widget/src/os2/nsSound.cpp

@@ -109,3 +109,8 @@ NS_METHOD nsSound::Play(nsIURL *aURL)
   return rv;
 }
 
+NS_IMETHODIMP nsSound::PlaySystemSound(const char *aSoundAlias)
+{
+  return Beep();
+}
+

widget/src/photon/nsSound.cpp

@@ -114,3 +114,7 @@ NS_IMETHODIMP nsSound::OnStreamComplete(nsIStreamLoader *aLoader,
   return rv;
 }
 
+NS_IMETHODIMP nsSound::PlaySystemSound(const char *aSoundAlias)
+{
+  return Beep();
+}

widget/src/windows/nsSound.cpp

@@ -92,7 +92,7 @@ void nsSound::PurgeLastSound() {
   }
 }
 
-NS_METHOD nsSound::Beep()
+NS_IMETHODIMP nsSound::Beep()
 {
   ::MessageBeep(0);
 
@@ -140,7 +140,7 @@ NS_IMETHODIMP nsSound::OnStreamComplete(nsIStreamLoader *aLoader,
   return NS_OK;
 }
 
-NS_METHOD nsSound::Play(nsIURL *aURL)
+NS_IMETHODIMP nsSound::Play(nsIURL *aURL)
 {
   nsresult rv;
 
@@ -156,3 +156,13 @@ NS_METHOD nsSound::Play(nsIURL *aURL)
   return rv;
 }
 
+
+NS_IMETHODIMP nsSound::PlaySystemSound(const char *aSoundAlias)
+{
+  PurgeLastSound();
+
+  ::PlaySound(aSoundAlias, nsnull, SND_ALIAS | SND_ASYNC);
+
+  return NS_OK;
+}
+

widget/src/xlib/nsSound.cpp

@@ -85,3 +85,8 @@ NS_METHOD nsSound::Play(nsIURL *aURL)
 #endif /* DEBUG_faulkner */
   return NS_OK;	
 }
+
+NS_IMETHODIMP nsSound::PlaySystemSound(const char *aSoundAlias)
+{
+  return Beep();
+}