Add and Remove Folder Listeners.

mailnews/base/public/nsIFolder.h

@@ -7,18 +7,13 @@
 
 #include "nsISupports.h" /* interface nsISupports */
 #include "nsICollection.h" /* interface nsICollection */
+#include "nsIFolderListener.h" /* interface nsIFolderListener */
 #include "nsIEnumerator.h" /* interface nsIEnumerator */
 
 #ifdef XPIDL_JS_STUBS
 #include "jsapi.h"
 #endif
-#include "nsDebug.h"
-#include "nsTraceRefcnt.h"
-#include "nsID.h"
-#include "nsIID.h"
-#include "nsError.h"
-#include "nsISupportsUtils.h"
-
+class nsIFolderListener; /* forward decl */
 
 /* starting interface nsIFolder */
 
@@ -43,7 +38,7 @@ class nsIFolder : public nsICollection {
   NS_IMETHOD SetName(char * aName) = 0;
 
   /* nsISupports GetChildNamed (in string name); */
-  NS_IMETHOD GetChildNamed(char *name, nsISupports **_retval) = 0;
+  NS_IMETHOD GetChildNamed(const char *name, nsISupports **_retval) = 0;
 
   /* nsIFolder GetParent (); */
   NS_IMETHOD GetParent(nsIFolder **_retval) = 0;
@@ -51,6 +46,12 @@ class nsIFolder : public nsICollection {
   /* nsIEnumerator GetSubFolders (); */
   NS_IMETHOD GetSubFolders(nsIEnumerator **_retval) = 0;
 
+  /* void AddFolderListener (in nsIFolderListener listener); */
+  NS_IMETHOD AddFolderListener(nsIFolderListener *listener) = 0;
+
+  /* void RemoveFolderListener (in nsIFolderListener listener); */
+  NS_IMETHOD RemoveFolderListener(nsIFolderListener *listener) = 0;
+
 #ifdef XPIDL_JS_STUBS
   static NS_EXPORT_(JSObject *) InitJSClass(JSContext *cx);
   static NS_EXPORT_(JSObject *) GetJSObject(JSContext *cx, nsIFolder *priv);

mailnews/base/public/nsIFolder.idl

@@ -17,6 +17,9 @@
  */
  
 #include "nsICollection.idl"
+#include "nsIFolderListener.idl"
+
+interface nsIFolderListener;
 
 [uuid(361c89b0-c481-11d2-8614-000000000001)]    /* XXX regenerate */
 interface nsIFolder : nsICollection {
@@ -28,5 +31,8 @@ interface nsIFolder : nsICollection {
         nsIFolder GetParent();
 
         nsIEnumerator GetSubFolders();
+
+		void AddFolderListener(in nsIFolderListener listener);
+		void RemoveFolderListener(in nsIFolderListener listener);
 };
 

mailnews/base/public/nsIFolderListener.h

@@ -13,6 +13,7 @@
 #ifdef XPIDL_JS_STUBS
 #include "jsapi.h"
 #endif
+class nsIFolder; /* forward decl */
 
 /* starting interface nsIFolderListener */
 
@@ -36,7 +37,7 @@ class nsIFolderListener : public nsISupports {
   NS_IMETHOD OnItemRemoved(nsIFolder *parentFolder, nsISupports *item) = 0;
 
   /* void OnItemPropertyChanged (in nsISupports item, in string property, in string value); */
-  NS_IMETHOD OnItemPropertyChanged(nsISupports *item, char *property, char *value) = 0;
+  NS_IMETHOD OnItemPropertyChanged(nsISupports *item, const char *property, const char *value) = 0;
 
 #ifdef XPIDL_JS_STUBS
   static NS_EXPORT_(JSObject *) InitJSClass(JSContext *cx);

mailnews/base/public/nsIFolderListener.idl

@@ -19,6 +19,8 @@
 #include "nsISupports.idl"
 #include "nsIFolder.idl"
 
+interface nsIFolder;
+
 [uuid(1c5ef9f0-d1c0-11d2-94CA-006097222B83)]    /* XXX regenerate */
 interface nsIFolderListener : nsISupports {