X-Git-Url: http://git.linex4red.de/pub/Android/ownCloud.git/blobdiff_plain/ba2dbeb7356cc95ebe260b50b147fe472452f8bf..d24ba158d24c161a0db484ea551a40851a9d60e8:/src/com/owncloud/android/operations/DownloadFileOperation.java

diff --git a/src/com/owncloud/android/operations/DownloadFileOperation.java b/src/com/owncloud/android/operations/DownloadFileOperation.java
index c672d572..52425a5b 100644
--- a/src/com/owncloud/android/operations/DownloadFileOperation.java
+++ b/src/com/owncloud/android/operations/DownloadFileOperation.java
@@ -21,10 +21,12 @@ import java.io.File;
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.Set;
+import java.util.concurrent.atomic.AtomicBoolean;
 
 import com.owncloud.android.datamodel.OCFile;
 import com.owncloud.android.lib.common.network.OnDatatransferProgressListener;
 import com.owncloud.android.lib.common.OwnCloudClient;
+import com.owncloud.android.lib.common.operations.OperationCancelledException;
 import com.owncloud.android.lib.common.operations.RemoteOperation;
 import com.owncloud.android.lib.common.operations.RemoteOperationResult;
 import com.owncloud.android.lib.resources.files.DownloadRemoteFileOperation;
@@ -48,6 +50,7 @@ public class DownloadFileOperation extends RemoteOperation {
     private OCFile mFile;
     private Set<OnDatatransferProgressListener> mDataTransferListeners = new HashSet<OnDatatransferProgressListener>();
     private long mModificationTimestamp = 0;
+    private final AtomicBoolean mCancellationRequested = new AtomicBoolean(false);
     
     private DownloadRemoteFileOperation mDownloadOperation;
 
@@ -129,6 +132,12 @@ public class DownloadFileOperation extends RemoteOperation {
         String tmpFolder =  getTmpFolder();
         
         /// perform the download
+        synchronized(mCancellationRequested) {
+            if (mCancellationRequested.get()) {
+                return new RemoteOperationResult(new OperationCancelledException());
+            }
+        }
+        
         mDownloadOperation = new DownloadRemoteFileOperation(mFile.getRemotePath(), tmpFolder);
         Iterator<OnDatatransferProgressListener> listener = mDataTransferListeners.iterator();
         while (listener.hasNext()) {
@@ -152,7 +161,10 @@ public class DownloadFileOperation extends RemoteOperation {
     }
 
     public void cancel() {
-        mDownloadOperation.cancel();
+        mCancellationRequested.set(true);   // atomic set; there is no need of synchronizing it
+        if (mDownloadOperation != null) {
+            mDownloadOperation.cancel();
+        }
     }