Emit signals from QgsHttpTransaction that allow progress bar and canceling of current transation

git-svn-id: http://svn.osgeo.org/qgis/trunk@9938 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: mhugent

src/core/qgshttptransaction.cpp

@@ -184,7 +184,8 @@ bool QgsHttpTransaction::getSynchronously( QByteArray &respondedContent, int red
 //  QgsDebugMsg("Response received; being '" + httpresponsestring + "'.");
 #endif
 
-  delete http;
+    delete http;
+    http = 0;
 
   // Did we get an error? If so, bail early
   if ( !mError.isNull() )
@@ -287,6 +288,9 @@ void QgsHttpTransaction::dataProgress( int done, int total )
   // We saw something come back, therefore restart the watchdog timer
   mWatchdogTimer->start( NETWORK_TIMEOUT_MSEC );
 
+  emit dataReadProgress(done);
+  emit totalSteps(total);
+
   QString status;
 
   if ( total )
@@ -464,4 +468,12 @@ QString QgsHttpTransaction::errorString()
   return mError;
 }
 
+void QgsHttpTransaction::abort()
+{
+    if(http)
+    {
+        http->abort();
+    }
+}
+
 // ENDS

src/core/qgshttptransaction.h

@@ -99,10 +99,18 @@ class CORE_EXPORT QgsHttpTransaction : public QObject
 
     void networkTimedOut();
 
+    /**Aborts the current transaction*/
+    void abort();
+
   signals:
 
-    /** \brief emit a signal to notify of a progress event */
-    void setProgress( int theProgress, int theTotalSteps );
+    /**legacy code. This signal is currently not emitted and only kept for API compatibility*/
+    void setProgress(int done, int total);
+
+    /**Signal for progress update */
+    void dataReadProgress( int theProgress);
+    /**Signal for adjusted number of steps*/
+    void totalSteps(int theTotalSteps);
 
     /** \brief emit a signal to be caught by qgisapp and display a msg on status bar */
     void statusChanged( QString theStatusQString );