From 4970546ecec70e89e2baece66eccfd350c499050 Mon Sep 17 00:00:00 2001
From: "Hoa V. DINH" <dinh.viet.hoa@gmail.com>
Date: Mon, 5 Aug 2013 16:40:50 -0700
Subject: Internal callbacks for ops, before and after running.

---
 src/core/basetypes/MCOperation.cc      |  8 ++++++++
 src/core/basetypes/MCOperation.h       |  8 +++++++-
 src/core/basetypes/MCOperationQueue.cc | 13 ++++++++++---
 src/core/basetypes/MCOperationQueue.h  |  1 +
 4 files changed, 26 insertions(+), 4 deletions(-)

diff --git a/src/core/basetypes/MCOperation.cc b/src/core/basetypes/MCOperation.cc
index d42a0598..73a8d7cd 100644
--- a/src/core/basetypes/MCOperation.cc
+++ b/src/core/basetypes/MCOperation.cc
@@ -40,10 +40,18 @@ bool Operation::isCancelled()
 	return value;
 }
 
+void Operation::beforeMain()
+{
+}
+
 void Operation::main()
 {
 }
 
+void Operation::afterMain()
+{
+}
+
 void Operation::start()
 {
 }
diff --git a/src/core/basetypes/MCOperation.h b/src/core/basetypes/MCOperation.h
index 71d0b465..bb77dbb1 100644
--- a/src/core/basetypes/MCOperation.h
+++ b/src/core/basetypes/MCOperation.h
@@ -18,11 +18,17 @@ namespace mailcore {
 		
 		virtual void setCallback(OperationCallback * callback);
 		virtual OperationCallback * callback();
-		
+        
 		virtual void cancel();
 		virtual bool isCancelled();
 		
+        // Will be called on main thread.
+        virtual void beforeMain();
+        
 		virtual void main();
+        
+        // Will be called on main thread.
+        virtual void afterMain();
 
         virtual void start();
         
diff --git a/src/core/basetypes/MCOperationQueue.cc b/src/core/basetypes/MCOperationQueue.cc
index 9c30ad22..c20cb907 100644
--- a/src/core/basetypes/MCOperationQueue.cc
+++ b/src/core/basetypes/MCOperationQueue.cc
@@ -84,6 +84,8 @@ void OperationQueue::runOperations()
             break;
         }
 
+        performMethodOnMainThread((Object::Method) &OperationQueue::beforeMain, op, true);
+        
         op->main();
         
         op->retain()->autorelease();
@@ -99,9 +101,7 @@ void OperationQueue::runOperations()
         pthread_mutex_unlock(&mLock);
         
         if (!op->isCancelled()) {
-            if (op->callback() != NULL) {
-                performMethodOnMainThread((Object::Method) &OperationQueue::callbackOnMainThread, op, true);
-            }
+            performMethodOnMainThread((Object::Method) &OperationQueue::callbackOnMainThread, op, true);
         }
         
         if (needsCheckRunning) {
@@ -115,8 +115,15 @@ void OperationQueue::runOperations()
     MCLog("cleanup thread %p", this);
 }
 
+void OperationQueue::beforeMain(Operation * op)
+{
+    op->beforeMain();
+}
+
 void OperationQueue::callbackOnMainThread(Operation * op)
 {
+    op->afterMain();
+    
     if (op->isCancelled())
         return;
     
diff --git a/src/core/basetypes/MCOperationQueue.h b/src/core/basetypes/MCOperationQueue.h
index ddfe9de2..0518d62f 100644
--- a/src/core/basetypes/MCOperationQueue.h
+++ b/src/core/basetypes/MCOperationQueue.h
@@ -43,6 +43,7 @@ namespace mailcore {
         void startThread();
         static void runOperationsOnThread(OperationQueue * queue);
         void runOperations();
+        void beforeMain(Operation * op);
         void callbackOnMainThread(Operation * op);
         void checkRunningOnMainThread(void * context);
         void checkRunningAfterDelay(void * context);
-- 
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